Quick door with counterweight balancing function

Abstract

The utility model discloses a quick door with counterweight balance function, the both sides of frame are respectively lifted and set up the counterweight block for balancing door body weight, the both ends on transmission rod are provided with winding wheel respectively, is provided with synchronous belt between winding wheel and counterweight block, and the both sides of transmission rod are respectively subjected to the force of door body, counterweight block downward to realize counterweight balance. The utility model has the advantages and effects as follows: in motor drive transmission rod positive and negative rotation, transmission rod drives sprocket chain positive and negative rotation to drive door body to lift, at this moment, through the setting of winding wheel, counterweight block, synchronous belt, realizes counterweight balance door body weight to reduce the load of motor, increases motor life, and adopts the method of configuration block counterweight balance, compared with the existing spring counterweight balance, there is no fatigue situation, and the both sides of frame are balanced simultaneously, make door body run more smoothly.

Description

Technical Field

[0001] This utility model relates to the field of high-speed door technology, and in particular to a high-speed door with a counterweight balancing function. Background Technology

[0002] The turbine-mounted rigid high-speed door is a high-performance industrial door that combines turbine track technology with a rigid door panel. It is widely used in factories, warehouses, garages, and other similar applications, featuring rapid opening and closing, wind resistance, heat insulation, and intelligent protection. Its guide rail system includes two tracks designed with an Archimedean spiral. The door body rolls up without contact under the action of a power unit, achieving a lifting speed of up to 0.8 meters per second. Simultaneously, guide pulleys are installed on both sides of the door body, slidingly connected within the tracks to reduce friction.

[0003] The power unit of a high-speed door includes a rotatably connected transmission rod, a motor that drives the transmission rod to rotate, and a sprocket and chain located at the bottom of the transmission rod and the frame of the high-speed door. The chain is connected to the bottom of the door body, and the door body is raised and lowered by the motor driving the chain to rotate in both directions. However, the door body is relatively heavy, which results in a large load on the motor, reducing the motor's lifespan, and the door body does not run smoothly. Utility Model Content

[0004] The purpose of this invention is to provide a high-speed door with a counterweight balancing function. By using a counterweight to balance the weight of the door body, the load on the motor is reduced, the motor life is increased, and the door operates more smoothly.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a high-speed door with counterweight balancing function, comprising a frame, first tracks arranged on both sides of the frame and with an Archimedean spiral shape at the top, a door body vertically arranged between the two first tracks, a transmission rod rotatably connected to the top of the frame, a motor linked to the transmission rod, and sprockets and chains arranged between the two ends of the transmission rod and the bottom sides of the frame. The sprockets and chains are connected to the bottom sides of the door body to drive the door body to rise and fall. Counterweights for balancing the weight of the door body are vertically arranged on both sides of the frame. Rewinding wheels are arranged at both ends of the transmission rod. A synchronous belt is arranged between the rewinding wheels and the counterweights. The two sides of the transmission rod are subjected to downward forces from the door body and the counterweights to achieve counterweight balancing. During the upward movement of the door body, the rewinding wheels unwind the synchronous belt, causing the counterweights to move downward. During the downward movement of the door body, the rewinding wheels wind the synchronous belt, causing the counterweights to move upward.

[0006] By adopting the above technical solution, the motor drives the transmission rod to rotate in both directions, which in turn drives the sprocket and chain to rotate in both directions, thereby raising and lowering the door. At this time, the weight of the door is balanced by the setting of the winding wheel, counterweight, and synchronous belt, thereby reducing the load on the motor and increasing the motor life. Moreover, the method of using the counterweight to balance the weight does not have the problem of fatigue compared to the existing spring counterweight balancing. At the same time, the counterweight is balanced on both sides of the frame, making the door run more smoothly.

[0007] A further feature of this invention is that the front and rear ends of the counterweight are respectively provided with a plurality of first guide wheels, and the two sides of the frame are respectively provided with second tracks for the first guide wheels to be inserted and raised or lowered.

[0008] By adopting the above technical solution, multiple embedded sliding connections are set in the second track on the front and rear end faces of the counterweight, thereby limiting the lifting and lowering of the counterweight and reducing the friction during the lifting and lowering process of the counterweight.

[0009] A further feature of this invention is that the bottom of the counterweight is provided with a plurality of inverted conical rubber buffer blocks.

[0010] By adopting the above technical solution, when the counterweight moves downward to the lowest position, the rubber buffer block can play a buffering role, preventing the counterweight from colliding with the bottom of the frame.

[0011] A further feature of this invention is that the door body includes multiple door panels arranged vertically and hinged together at their joints, two side-mounted hinge assemblies, and multiple second guide wheels; the side-mounted hinge assembly includes multiple fixed plates mounted on the side of the door panel, and multiple hinge structures disposed between two adjacent fixed plates; the hinge structure includes a connecting shaft disposed at the bottom of the upper fixed plate, a first rotating shaft disposed at the top of the lower fixed plate, a connecting plate with one end fixed to the bottom of the upper fixed plate and the other end sleeved on the first rotating shaft, a connecting nut threaded onto the connecting shaft and used to press the connecting plate, and a positioning bolt disposed between the connecting plate and the upper fixed plate to prevent the connecting plate from rotating; the second guide wheel is mounted on one end of the first rotating shaft protruding from the connecting plate and is slidably disposed within the first track.

[0012] By adopting the above technical solution, multiple fixing plates of the side-mounted hinge assembly are installed on the side of the door panel of the high-speed door, and a hinge structure is set between two adjacent fixing plates, thereby realizing the sequential hinge connection of multiple door panels of the high-speed door; and in the hinge structure, when the connecting plate is installed with the bottom of the upper fixing plate, it is fixed by the connecting nut, and the positioning part is used to prevent the connecting plate from rotating, which has the function of facilitating installation.

[0013] A further feature of this invention is that a nylon sleeve is provided on the first rotating shaft, and the connecting plate is fitted onto the nylon sleeve of the first rotating shaft; the second guide wheel is made of polyurethane material.

[0014] By adopting the above technical solutions, the nylon sleeve can effectively reduce the operating noise at the connection between the connecting plate and the rotating shaft, and the second guide wheel is made of polyurethane material to reduce operating noise.

[0015] A further feature of this invention is that an intermediate hinge is provided between two adjacent door panels. The intermediate hinge includes an upper hinge plate installed on one door panel, a lower hinge plate installed on the other door panel, and a second pivot shaft disposed between the upper hinge plate and the lower hinge plate. Both the upper hinge plate and the lower hinge plate are made of nylon material.

[0016] By adopting the above technical solution, the connection stability of the door can be improved by installing an intermediate hinge between two adjacent door panels. The upper and lower hinge plates of the intermediate hinge are both made of nylon material, which can also reduce operating noise.

[0017] A further feature of this invention is that, between two adjacent door panels, the bottom of the upper door panel is provided with a groove, and the top of the upper door panel is provided with a protrusion located within the groove. When the two door panels are arranged in parallel, the protrusion is embedded in the groove. When the relative angle of the two door panels rotates, the protrusion of the lower door panel does not interfere with the groove of the upper door panel. The upper hinge plate is integrally provided with a first limiting part that abuts against the door panel, and the lower hinge plate is integrally provided with a second limiting part that abuts against the door panel. When the first limiting part and the second limiting part abut against each other, the two door panels are arranged in parallel.

[0018] By adopting the above technical solution, the tightness of the connection between the two door panels is improved by setting a groove and a protrusion between the two door panels; when the first limiting part and the second limiting part abut against each other, the two door panels are arranged in parallel. Since the first limiting part and the second limiting part are respectively integrated with the upper hinge piece and the lower hinge piece, and the first limiting part and the second limiting part are also made of nylon material, the noise generated during the contact process can be reduced.

[0019] A further feature of this invention is that the frame is detachably connected to protective covers extending to both sides of the door.

[0020] By adopting the above technical solution, the protective cover can cover the structure on both sides of the frame, improving the overall aesthetics. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of Example 1;

[0023] Figure 2 This is a front view of Embodiment 1 after removing one side shield and retaining part of the door body;

[0024] Figure 3 yes Figure 2 A schematic diagram of the structure after removing the timing belt, sprockets, and chain from the basic structure;

[0025] Figure 4 yes Figure 3 A magnified view of the area located at point A;

[0026] Figure 5 This is a partial top view of Example 1 (the timing belt, sprocket, and chain are omitted in the figure);

[0027] Figure 6 yes Figure 2 A schematic diagram of the structure of the part of the door that is retained in the diagram;

[0028] Figure 7 yes Figure 6 A magnified view of the area located at point B;

[0029] Figure 8 yes Figure 7 A partial structural cross-sectional view of the location;

[0030] Figure 9 This is a structural schematic diagram of part of the door panel in Example 2;

[0031] Figure 10 This is a partial structural diagram of the connection between the two door panels and the middle hinge in Embodiment 2;

[0032] Figure 11 This is a schematic diagram of the intermediate hinge in Embodiment 2.

[0033] In the diagram: 1. Frame; 2. First track; 3. Door body; 31. Door panel; 311. Groove; 312. Protrusion; 32. Side-mounted hinge assembly; 321. Fixing plate; 322. Hinge structure; 3221. Connecting shaft; 3222. First pivot; 3223. Connecting plate; 3224. Connecting nut; 3225. Positioning bolt; 3226. Nylon sleeve; 33. Second guide wheel; 34. Intermediate hinge; 341. Upper hinge plate; 3411. First limiting part; 342. Lower hinge plate; 3421. Second limiting part; 343. Second pivot; 4. Transmission rod; 5. Motor; 6. Sprocket and chain; 7. Counterweight; 71. First guide wheel; 72. Rubber buffer block; 8. Rewinding wheel; 9. Synchronous belt; 10. Second track; 11. Protective cover. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] Example: A high-speed door with counterweight balancing function, such as Figures 1 to 3 As shown, it includes a frame 1, first tracks 2 set on both sides of the frame 1 and with the top in the shape of an Archimedean spiral, a door body 3 that is lifted and lowered between the two first tracks 2, a transmission rod 4 rotatably connected to the top of the frame 1, a motor 5 that is linked to the transmission rod 4 via a chain drive, and sprockets and chains 6 set between the two ends of the transmission rod 4 and the bottom of both sides of the frame 1. The sprockets and chains 6 are connected to the bottom side of the door body 3 to drive the door body 3 to lift and lower.

[0036] like Figures 2 to 6 As shown, counterweights 7 are vertically mounted on both sides of the frame 1 to balance the weight of the door 3. Retracting wheels 8 are mounted at both ends of the transmission rod 4, and a synchronous belt 9 is installed between the retracting wheels 8 and the counterweights. The transmission rod 4 is subjected to downward forces from the door 3 and the counterweights 7 to achieve counterweight balance. During the upward movement of the door 3, the retracting wheels 8 unwind the synchronous belt 9, causing the counterweights 7 to move downward; during the downward movement of the door 3, the retracting wheels 8 wind up the synchronous belt 9, causing the counterweights 7 to move upward. Multiple first guide wheels 71 are mounted on the front and rear ends of the counterweights 7, and second tracks 10 are mounted on both sides of the frame 1 for the first guide wheels 71 to engage and move vertically. Multiple inverted conical rubber buffer blocks 72 are mounted on the bottom of the counterweights 7.

[0037] like Figure 2 and Figure 3 , Figures 6 to 8As shown, the door body 3 includes multiple door panels 31 arranged vertically and hinged together at their joints, two side-mounted hinge assemblies 32, and multiple second guide wheels 33. The side-mounted hinge assembly 32 includes multiple fixing plates 321 mounted on the side of the door panel 31 and multiple hinge structures 322 disposed between two adjacent fixing plates 321. The hinge structure 322 includes a connecting shaft 3221 located at the bottom of the upper fixing plate 321, a first rotating shaft 3222 located at the top of the lower fixing plate 321, a connecting plate 3223 with one end fixed to the bottom of the upper fixing plate 321 and the other end fitted onto the first rotating shaft 3222, a connecting nut 3224 threaded onto the connecting shaft 3221 for pressing the connecting plate 3223, and a positioning bolt 3225 located between the connecting plate 3223 and the upper fixing plate 321 to prevent the connecting plate 3223 from rotating. A second guide wheel 33 is mounted on one end of the first rotating shaft 3222 that protrudes from the connecting plate 3223 and is slidably disposed within the first track 2. Simultaneously, guide wheels with a structure communicating with the second guide wheel 33 are directly mounted on the sides of the side-mounted hinge assembly 21 corresponding to the uppermost and lowermost ends of the door body 3 (e.g., ...). Figure 6 The bottommost guide wheel (not labeled) will not be discussed further here.

[0038] like Figure 7 and Figure 8 As shown, a nylon sleeve 3226 is provided on the first rotating shaft 3222, and a connecting plate 3223 is fitted on the nylon sleeve 3226 of the first rotating shaft 3222; the second guide wheel 33 is made of polyurethane material.

[0039] The frame 1 has detachable covers 11 that extend to cover both sides of the door 3. The covers 11 cover the structure of the sprocket chain 6, the first guide rail, the counterweight 7, and the timing belt 9.

[0040] Implementation effect: When the motor 5 drives the transmission rod 4 to rotate in both directions, the transmission rod 4 drives the sprocket and chain 6 to rotate in both directions, thereby driving the door body 3 to rise and fall. At this time, the weight of the door body 3 is balanced by the setting of the winding wheel 8, the counterweight block 7, and the synchronous belt 9, thereby reducing the load on the motor 5 and increasing the life of the motor 5. Moreover, the method of using the counterweight block for balancing does not have the problem of fatigue compared to the existing spring counterweight balancing. At the same time, the counterweight balancing is performed on both sides of the frame 1, making the operation of the door body 3 smoother.

[0041] By setting multiple embedded sliding connections on the front and rear ends of the counterweight 7 within the second track 10, the lifting and lowering of the counterweight 7 is limited, thereby reducing friction during the lifting and lowering process. When the counterweight 7 moves downward to its lowest position, the rubber buffer block 72 provides a cushioning effect, preventing the counterweight 7 from colliding with the bottom of the frame 1.

[0042] Multiple fixing plates 321 of the side-mounted hinge assembly 32 are installed on the side of the door panel 31 of the high-speed door. A hinge structure 322 is provided between two adjacent fixing plates 321, thereby realizing the sequential hinged connection of multiple door panels 31 of the high-speed door. In the hinge structure 322, when the connecting plate 3223 is installed with the bottom of the upper fixing plate 321, it is fixed by the connecting nut 3224, and the positioning part prevents the connecting plate 3223 from rotating, which facilitates installation. The nylon sleeve 3226 can effectively reduce the operating noise at the connection between the connecting plate 3223 and the rotating shaft. The second guide wheel 33 is made of polyurethane material to reduce operating noise.

[0043] Example 2: A high-speed door with counterweight balancing function, such as Figures 9 to 11 As shown, the difference from Embodiment 1 is that an intermediate hinge 34 is provided between two adjacent door panels 31. The intermediate hinge 34 includes an upper hinge plate 341 installed on one door panel 31, a lower hinge plate 342 installed on the other door panel 31, and a second pivot 343 disposed between the upper hinge plate 341 and the lower hinge plate 342. Both the upper hinge plate 341 and the lower hinge plate 342 are made of nylon material. Between two adjacent door panels 31, a groove 311 is provided at the bottom of the upper door panel 31, and a protrusion 312 is provided at the top of the upper door panel 31 within the groove 311. When the two door panels 31 are arranged in parallel, the protrusion 312 is embedded in the groove 311. When the relative angle of the two door panels 31 rotates, the protrusion 312 of the lower door panel 31 does not interfere with the groove 311 of the upper door panel 31. A first limiting part 3411 that abuts against the door panel 31 is integrally provided on the upper hinge plate 341, and a second limiting part 3421 that abuts against the door panel 31 is integrally provided on the lower hinge plate 342. When the first limiting part 3411 and the second limiting part 3421 abut against each other, the two door panels 31 are arranged in parallel.

[0044] Implementation Effect: Simultaneously installing an intermediate hinge 34 between two adjacent door panels 31 improves the connection stability of the door body 3. The upper hinge plate 341 and lower hinge plate 342 of the intermediate hinge 34 are both made of nylon, which also reduces operating noise. By providing a groove 311 and a protrusion 312 between the two door panels 31, the tightness of the connection between the two door panels 31 is improved. When the first limiting part 3411 and the second limiting part 3421 abut, the two door panels 31 are arranged parallel to each other. Since the first limiting part 3411 and the second limiting part 3421 are integrally formed with the upper hinge plate 341 and the lower hinge plate 342 respectively, and the first limiting part 3411 and the second limiting part 3421 are also made of nylon, noise generated during contact can be reduced.

Claims

1. A high-speed door with counterweight balancing function, comprising a frame (1), first tracks (2) arranged on both sides of the frame (1) and with the top in the shape of an Archimedean spiral, a door body (3) that is lifted and lowered between the two first tracks (2), a transmission rod (4) rotatably connected to the top of the frame (1), a motor (5) linked to the transmission rod (4), and sprockets and chains (6) arranged between the two ends of the transmission rod (4) and the bottom sides of both sides of the frame (1), wherein the sprockets and chains (6) are connected to the bottom side of the door body (3) to drive the door body (3) to lift and lower, characterized in that: The frame (1) is provided with counterweights (7) on both sides for balancing the weight of the door (3). The transmission rod (4) is provided with winding wheels (8) at both ends. A synchronous belt (9) is provided between the winding wheels (8) and the seed block. The transmission rod (4) is subjected to downward forces from the door (3) and the counterweights (7) to achieve counterweight balance. During the upward movement of the door body (3), the winding wheel (8) unwinds the synchronous belt (9) to make the counterweight (7) move downward; during the downward movement of the door body (3), the winding wheel (8) winds up the synchronous belt (9) to make the counterweight (7) move upward.

2. A high-speed door with counterweight balancing function according to claim 1, characterized in that: The counterweight (7) is provided with a plurality of first guide wheels (71) on its front and rear ends respectively, and the frame (1) is provided with second tracks (10) on both sides for the first guide wheels (71) to be inserted and raised or lowered.

3. A high-speed door with counterweight balancing function according to claim 1, characterized in that: The bottom of the counterweight (7) is provided with multiple inverted cone-shaped rubber buffer blocks (72).

4. A high-speed door with counterweight balancing function according to claim 3, characterized in that: The door (3) includes multiple door panels (31) arranged vertically and hinged together at the connection points, two side-mounted hinge assemblies (32), and multiple second guide wheels (33); The side-mounted hinge assembly (32) includes multiple fixing plates (321) installed on the side of the door panel (31) and multiple hinge structures (322) arranged between two adjacent fixing plates (321). The hinge structure (322) includes a connecting shaft (3221) arranged at the bottom of the upper fixing plate (321), a first rotating shaft (3222) arranged at the top of the lower fixing plate (321), a connecting plate (3223) with one end fixed to the bottom of the upper fixing plate (321) and the other end sleeved on the first rotating shaft (3222), a connecting nut (3224) threaded to the connecting shaft (3221) and used to press the connecting plate (3223), and a positioning bolt (3225) arranged between the connecting plate (3223) and the upper fixing plate (321) to prevent the connecting plate (3223) from rotating. The second guide wheel (33) is installed at one end of the first rotating shaft (3222) that protrudes from the connecting plate (3223) and is slidably arranged in the first track (2).

5. A high-speed door with counterweight balancing function according to claim 4, characterized in that: A nylon sleeve (3226) is provided on the first rotating shaft (3222), and the connecting plate (3223) is fitted on the nylon sleeve (3226) of the first rotating shaft (3222); the second guide wheel (33) is made of polyurethane material.

6. A high-speed door with counterweight balancing function according to claim 4, characterized in that: An intermediate hinge (34) is provided between two adjacent door panels (31). The intermediate hinge (34) includes an upper hinge plate (341) installed on one door panel (31), a lower hinge plate (342) installed on the other door panel (31), and a second pivot (343) disposed between the upper hinge plate (341) and the lower hinge plate (342). Both the upper hinge plate (341) and the lower hinge plate (342) are made of nylon material.

7. A high-speed door with counterweight balancing function according to claim 6, characterized in that: Between two adjacent door panels (31), the bottom of the upper door panel (31) is provided with a recess (311), and the top of the upper door panel (31) is provided with a protrusion (312) located within the recess (311). When the two door panels (31) are arranged in parallel, the protrusion (312) is embedded in the recess (311). When the relative angle of the two door panels (31) rotates, the lower door panel (31) The protrusion (312) of the door panel (31) does not interfere with the groove (311) of the upper door panel (31); the upper hinge plate (341) is integrally provided with a first limiting part (3411) that abuts against the door panel (31), and the lower hinge plate (342) is integrally provided with a second limiting part (3421) that abuts against the door panel (31). When the first limiting part (3411) and the second limiting part (3421) abut against each other, the two door panels (31) are arranged in parallel.

8. A high-speed door with counterweight balancing function according to claim 1, characterized in that: The frame (1) is detachably connected to two protective covers (11) that extend to cover both sides of the door (3).

Images