A revolving door suitable for use in a sloping building project

Abstract

The application discloses a rotary door suitable for a building engineering with a slope, which comprises a door body, a hinge and a self-locking assembly, the lower end of the door body is provided with a universal wheel in contact with the slope, the hinge is used for rotationally connecting the door body and a building wall, the hinge comprises a fixed shaft and a shaft sleeve, the self-locking assembly is arranged on the hinge, and the self-locking assembly comprises a lower disc, a prism block, a gear ring, an upper disc and a ratchet mechanism. After the rotary door of the application is opened, the door body can be automatically locked no matter where the door body is located on the slope, the automatic acceleration closing of the door body is prevented, the safety and convenience are achieved, the normal closing of the door body is not affected, the rotary door is suitable for any slope, the structure is simple, and the practicability is high.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically a revolving door suitable for sloping building projects. Technical Background

[0002] Doors are the entrances and exits of a building project to the outside. There are various types of doors, such as revolving doors, sliding doors, telescopic doors, and roller shutters. Among them, revolving doors are the most common. Revolving doors are further divided into inward revolving doors and outward revolving doors. Inward revolving doors are the most convenient and practical, so they are used the most.

[0003] To prevent water accumulation, many construction projects have courtyards with higher ground levels than the outside. To facilitate vehicle access, a ramp is often installed at the courtyard entrance. However, this ramp obstructs the installation of inward-opening revolving doors, preventing them from opening. Currently, there are many patents addressing this issue, such as CN211819015U and CN112343464A. However, these solutions have the problem that once the door is opened, someone must stop it; otherwise, the door will automatically close rapidly on the ramp, potentially injuring people or objects passing through. Furthermore, each product is only suitable for one type of ramp, lacking universal applicability and hindering mass production. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a revolving door suitable for sloping construction projects.

[0005] The technical solution adopted in this invention is: a revolving door suitable for sloping construction projects, comprising a door body, hinges, and a self-locking component;

[0006] The door is rectangular, and the lower end of the door is equipped with casters that contact the ramp. When the door rotates, the casters cause the door to rise and fall with the ramp.

[0007] The hinge is used to rotatably connect the door to the building wall. The hinge includes a fixed shaft and a bushing. The fixed shaft is fixed to the building wall and includes a first connecting member and a cylindrical shaft. The first connecting member is fixed to the building wall, and the cylindrical shaft is vertically fixed to the upper end of the first connecting member. The length of the cylindrical shaft is greater than the height of the ramp. The cylindrical shaft has a vertical groove. The bushing is fixed to the door and includes a second connecting member and a cylinder. The second connecting member is fixed to the door, and the cylinder is fixed to the second connecting member. The cylinder is sleeved on the cylindrical shaft and can rotate on the cylindrical shaft.

[0008] When the door is opened, the door gradually rises along the ramp under the action of the casters, and the bushing rotates in the positive direction around the fixed axis and rises on the fixed axis. When the door is closed, the door gradually descends along the ramp, and the bushing rotates in the opposite direction around the fixed axis and descends on the fixed axis.

[0009] The self-locking assembly is mounted on the hinge and is used to prevent the door from automatically closing after being opened. The self-locking assembly includes a lower disc, a prism block, a gear ring, an upper disc, and a pawl mechanism. The lower disc is coaxially fixed to the upper end of the cylinder, and has a first central hole with the same diameter as the cylinder. The prism block is coaxially fixed to the upper end of the lower disc, and its outer diameter is smaller than that of the lower disc. The prism block has a second central hole with the same diameter as the cylinder. The gear ring is coaxially fixed to the upper end of the lower disc, and its outer diameter is the same as that of the lower disc. There is a gap between the gear ring and the prism block. The lower inner wall of the gear ring has helical teeth that engage with the pawl only when the gear ring rotates in the opposite direction. The upper inner wall of the gear ring has a concave track. The upper disc is embedded in the recessed rail of the gear ring, allowing it to rotate relative to the gear ring within the recessed rail. The upper disc has a third central hole with the same diameter as the cylinder. A protrusion on the inner wall of the third central hole matches a groove on the cylindrical shaft, enabling the upper disc to move only up and down on the cylindrical shaft and not rotate around it. A pawl mechanism is located on the lower end face of the upper disc. The pawl mechanism includes a pawl and a torsion spring. The pawl is rotatably positioned on the lower end face of the upper disc, located between the prism block and the gear ring. The size of the pawl matches the helical teeth on the gear ring. The pawl only engages with the gear ring when it rotates in the opposite direction; it does not engage with the gear ring when it rotates in the forward direction. The torsion spring is located on both the pawl and the upper disc, and its elasticity causes the pawl to deflect towards the prism block.

[0010] When a person pushes the door open, the door gradually rises along the ramp under the action of the casters. The bushing rotates clockwise around a fixed axis and rises along that axis. The prism block and gear ring move in the same direction as the bushing. The upper disc only rises along the fixed axis with the bushing and does not rotate clockwise around the fixed axis. The pawl swings due to the rotation of the prism block. Since the gear ring is rotating clockwise at this time, the pawl will not engage with the gear ring and will not affect the opening of the door. When the door is opened, the person releases the door. Due to gravity, the door will automatically slide down the ramp, and the door will rotate in the opposite direction to accelerate and close. At this time, the prism block and the toothed ring rotate in the opposite direction of the door body with accelerated rotation. The pawl swings more due to the accelerated rotation of the prism block. The pawl engages with the toothed ring, preventing the toothed ring from rotating and thus preventing the door body from rotating further in the opposite direction, achieving automatic locking of the door body. When a person wants to close the door body, they only need to push the door body slightly with their hand. The downward force of the door body is released. Under the action of the torsion spring, the pawl leaves the toothed ring and deviates towards the prism block. The pawl and toothed ring are not engaged. The person controls the door body to close slowly. At this time, the swing amplitude of the pawl is small. The pawl and toothed ring are not engaged, which does not affect the normal slow closing of the door body.

[0011] Furthermore, the prism block is an octagonal prism or a decaprism.

[0012] Furthermore, the upper disc is provided with a limiting post to restrict the swing amplitude of the pawl.

[0013] Furthermore, the ratchet mechanism can be one or two.

[0014] The beneficial effects of this invention are: after the door is opened, it will automatically lock no matter where the door is on the slope, preventing the door from automatically accelerating its closure, which is safe and convenient and does not affect the normal closure of the door; it is suitable for any slope and can be mass-produced; it has a simple structure and is highly practical. Attached Figure Description

[0015] like Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] like Figure 2 This is an exploded structural diagram of the hinge and self-locking component of the present invention.

[0017] like Figure 3 This is a schematic diagram of the cross-sectional structure of the hinge and self-locking component of the present invention. Detailed Implementation

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Example 1

[0020] A revolving door suitable for sloping construction projects includes a door body 100, a hinge 200, and a self-locking component 300.

[0021] The door 100 is a single door with a rectangular shape, and the lower end of the door 100 is provided with casters 110 that contact the ramp.

[0022] The hinge 200 is used to rotatably connect the door 100 to the building wall 400. There are at least two hinges 200. The hinge 200 includes a fixed shaft 210 and a bushing 220. The fixed shaft 210 is fixed to the building wall 400. The fixed shaft 210 includes a first connecting member 211 and a cylindrical shaft 212. The first connecting member 211 is fixed to the building wall 400. The cylindrical shaft 212 is vertically fixed to the upper end of the first connecting member 211. The length of the cylindrical shaft 212 is greater than the height of the slope. The cylindrical shaft 212 is provided with a vertical groove 213. The bushing 220 is fixed to the door 100. The bushing 220 includes a second connecting member 221 and a cylinder 222. The second connecting member 221 is fixed to the door 100. The cylinder 222 is fixed to the second connecting member 221. The cylinder 222 is sleeved on the cylindrical shaft 212 and can rotate on the cylindrical shaft 212.

[0023] The self-locking component 300 is mounted on one of the hinges 200. The self-locking component 300 prevents the door 100 from automatically closing after being opened. The self-locking component 300 includes a lower disc 310, a prism block 320, a gear ring 330, an upper disc 340, and a pawl mechanism 350. The lower disc 310 is coaxially fixed to the upper end of the cylinder 222, and has a first central hole 311 with the same diameter as the cylinder 222. The prism block 320 is an octagonal prism, coaxially fixed to the upper end of the lower disc 310, and its outer diameter is smaller than [missing information]. The lower disk 310 has an outer diameter, and the prism block 320 has a second central hole 321 with the same diameter as the cylinder 222. The gear ring 330 is coaxially fixed to the upper end of the lower disk 310. The outer diameter of the gear ring 330 is the same as that of the lower disk 310. There is a gap between the gear ring 330 and the prism block 320. The inner wall of the lower end of the gear ring 330 is provided with helical teeth 331. The direction of the helical teeth 331 is such that they can only engage with the pawl 351 when the gear ring 330 rotates in the opposite direction. The inner wall of the upper end of the gear ring 330 is provided with a concave rail 332. The upper disk 340 is embedded in the concave rail of the gear ring 330. Within 332, the upper disk 340 can rotate relative to the concave rail 332 of the gear ring 330. The upper disk 340 has a third central hole 341 with the same diameter as the cylinder 222 at its center. A protrusion 342 is provided on the inner wall of the third central hole 340, which matches a groove 213 on the cylindrical shaft 212, allowing the upper disk 340 to move up and down on the cylindrical shaft 212 but not rotate around it. The pawl mechanism 350 is located on the lower end face of the upper disk 340 and includes a pawl 351 and a torsion spring 352. 51 is rotatably mounted on the lower end face of the upper disk 340. The pawl 351 is located between the prism block 320 and the gear ring 330. The size of the pawl 351 matches the helical teeth 331 on the gear ring 330. The pawl 351 only engages with the gear ring 330 when the gear ring 330 rotates in the reverse direction. The pawl 351 does not engage with the gear ring 330 when the gear ring 330 rotates in the forward direction. The upper disk 340 is provided with a limiting post to limit the swing amplitude of the pawl 351. The torsion spring 352 is provided on the pawl 351 and the upper disk 340. The elastic force of the torsion spring 352 causes the pawl 351 to deflect towards the prism block 320.

[0024] Example 2

[0025] A revolving door suitable for sloping construction projects includes a door body 100, a hinge 200, and a self-locking component 300.

[0026] The door 100 is a double door with a rectangular shape. Each door 100 has a caster wheel 110 at its lower end that contacts the ramp.

[0027] The hinges 200 are used to rotatably connect the door 100 to the building wall 400. Each door 100 has at least two hinges 200. Each hinge 200 includes a fixed shaft 210 and a bushing 220. The fixed shaft 210 is fixed to the building wall 100 and includes a first connecting member 211 and a cylindrical shaft 212. The first connecting member 211 is fixed to the building wall 400, and the cylindrical shaft 212 is vertically fixed to the first connecting member 211. At the upper end, the length of the cylindrical shaft 212 is greater than the height of the slope. The cylindrical shaft 212 is provided with a vertical groove 213. The bushing 220 is fixed on the door body 100. The bushing 220 includes a second connecting member 221 and a cylinder 222. The second connecting member 221 is fixed on the door body 100, and the cylinder 222 is fixed on the second connecting member 221. The cylinder 222 is sleeved on the cylindrical shaft 212 and can rotate on the cylindrical shaft 212.

[0028] The self-locking component 300 is mounted on the hinge 200. At least one hinge 200 on each door 100 is equipped with the self-locking component 300. The self-locking component 300 prevents the door 100 from automatically closing after being opened. The self-locking component 300 includes a lower disc 310, a prism block 320, a gear ring 330, an upper disc 340, and a ratchet mechanism 350. The lower disc 310 is coaxially fixed to the upper end of the cylinder 222, and has a first central hole 311 with the same diameter as the cylinder 222. The prism block 320 is a decaprism and is coaxially fixed to the upper end of the lower disc 310. The outer diameter of the prism block 320 is smaller than the outer diameter of the lower disk 310. The prism block 320 has a second central hole 321 with the same diameter as the cylinder 222. The gear ring 330 is coaxially fixed to the upper end of the lower disk 310. The outer diameter of the gear ring 330 is the same as the outer diameter of the lower disk 310. There is a gap between the gear ring 330 and the prism block 320. The inner wall of the lower end of the gear ring 330 has helical teeth 331, which can only engage with the pawl 350 when the gear ring 330 rotates in the opposite direction. The inner wall of the upper end of the gear ring 330 has a concave rail 332. The upper disk 340 is embedded in the concave rail 332 of the gear ring 330. Within the upper disk 340, the upper disk 340 can rotate relative to the concave rail 332 of the gear ring 330. The upper disk 340 has a third central hole 341 with the same diameter as the cylinder 222. A protrusion 342 is provided on the inner wall of the third central hole 341, which matches a groove 213 on the cylindrical shaft 212, allowing the upper disk 340 to move up and down on the cylindrical shaft 212 but not rotate around it. Two pawl mechanisms 350 are evenly distributed on the lower end face of the upper disk 340, each including a pawl. Pad 351 and torsion spring 352 are rotatably mounted on the lower end face of upper disk 340. Pad 351 is located between prism block 320 and gear ring 330. The size of pad 351 matches the helical teeth 331 on gear ring 330. Pad 351 only engages with gear ring 330 when gear ring 330 rotates in the reverse direction. Pad 351 does not engage with gear ring 330 when gear ring 330 rotates in the forward direction. Upper disk 340 is provided with a limiting post to limit the swing amplitude of pad 351. Torsion spring 352 is provided on pad 351 and upper disk 340. The elastic force of torsion spring 352 causes pad 351 to deflect towards prism block 320.

[0029] It should be noted that when terms such as "upper," "lower," "inner," or "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use, they are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and therefore should not be construed as indicating or implying relative importance.

[0030] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A revolving door suitable for sloping construction projects, characterized in that: The revolving door includes a door body, hinges, and a self-locking assembly; The door is rectangular, and the lower end of the door is equipped with casters that contact the ramp. The hinge is used to rotatably connect the door to the building wall. The hinge includes a fixed shaft and a bushing. The fixed shaft is fixed to the building wall and includes a first connecting member and a cylindrical shaft. The first connecting member is fixed to the building wall, and the cylindrical shaft is vertically fixed to the upper end of the first connecting member. The length of the cylindrical shaft is greater than the height of the ramp. The cylindrical shaft has a vertical groove. The bushing is fixed to the door and includes a second connecting member and a cylinder. The second connecting member is fixed to the door, and the cylinder is fixed to the second connecting member. The cylinder is sleeved on the cylindrical shaft and can rotate on the cylindrical shaft. The self-locking assembly is mounted on the hinge and is used to prevent the door from automatically closing after being opened. The self-locking assembly includes a lower disc, a prism block, a gear ring, an upper disc, and a pawl mechanism. The lower disc is coaxially fixed to the upper end of the cylinder, and has a first central hole with the same diameter as the cylinder. The prism block is coaxially fixed to the upper end of the lower disc, and its outer diameter is smaller than that of the lower disc. The prism block has a second central hole with the same diameter as the cylinder. The gear ring is coaxially fixed to the upper end of the lower disc, and its outer diameter is the same as that of the lower disc. There is a gap between the gear ring and the prism block. The lower inner wall of the gear ring has helical teeth that engage with the pawl only when the gear ring rotates in the opposite direction. The upper inner wall of the gear ring has a concave track. The upper disk is embedded in the toothed ring groove, and the upper disk can rotate relative to the toothed ring groove. The upper disk has a third center hole with the same diameter as the cylinder. The inner wall of the third center hole has a protrusion that matches the groove on the cylindrical shaft, so that the upper disk can only move up and down on the cylindrical shaft and cannot rotate around the cylindrical shaft. The pawl mechanism is set on the lower end face of the upper disk. The pawl mechanism includes a pawl and a torsion spring. The pawl is rotatably set on the lower end face of the upper disk. The pawl is located between the prism block and the toothed ring. The size of the pawl matches the helical teeth on the toothed ring. The pawl only engages with the toothed ring when the toothed ring rotates in the opposite direction. The pawl does not engage with the toothed ring when the toothed ring rotates in the forward direction. The torsion spring is set on the pawl and the upper disk. The elastic force of the torsion spring causes the pawl to deflect towards the prism block. When a person pushes the door open, the door gradually rises along the ramp under the action of the casters. The bushing rotates in the positive direction around the fixed axis and rises on the fixed axis. After the door is opened, the person releases the door, and due to gravity, the door will automatically slide down the ramp. The door will then rotate in the opposite direction to accelerate and close. At this time, the prism block and the toothed ring will rotate in the opposite direction with the door. The pawl will swing more due to the accelerated rotation of the prism block. The pawl will engage with the toothed ring, preventing the toothed ring from rotating and thus preventing the door from rotating further in the opposite direction, achieving automatic locking and closing of the door. When the person controls the door to close slowly, the pawl swings less and does not engage with the toothed ring, so it does not affect the normal slow closing of the door.

2. The revolving door applicable to sloping construction projects according to claim 1, characterized in that: The prism block is an octagonal prism or a decaprism.

3. The revolving door applicable to sloping construction projects according to claim 1, characterized in that: The upper disc is equipped with a limiting post that restricts the swing amplitude of the pawl.

4. A revolving door suitable for sloping construction projects according to claim 1, characterized in that: The ratchet mechanism can be one or two.

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