Counterweight device of flexible fast rolling door

Abstract

The invention discloses a balance weight device of a flexible fast rolling door, and relates to the technical field of flexible fast rolling doors, the balance weight device comprises a mounting frame arranged on a balance weight device body, the top of the mounting frame is fixedly connected with two symmetrically arranged supporting plates, and the opposite side walls of the two supporting plates are rotatably connected with rollers through first rotating shafts; and an annular guide groove is formed in the side wall of the rolling wheel, and a steel cable is slidably connected into the guide groove. According to the balance weight device of the flexible fast rolling door, the guide groove can be automatically scraped and cleaned, when impurities difficult to clean adhere to the side wall of the guide groove, an external alarm gives an alarm to remind a worker to conduct manual cleaning and maintenance, and the normal use effect of the balance weight device is guaranteed; the steel cable can be automatically lubricated, so that the steel cable is smoother to move, the noise is reduced, and the counterweight effect is ensured; and the speed of movement of the steel cable and the balancing weight can be limited, then the speed of opening and closing of the flexible fast rolling door is limited, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of flexible fast rolling doors, in particular to a counterweight device for flexible fast rolling doors. Background Art

[0002] Flexible fast rolling door is an efficient and durable industrial door, widely used in many fields. It is mainly composed of door body, drive device, control system and sealing system. It has the characteristics of fast opening speed, heat preservation, dustproof, insect-proof and sound insulation. Flexible fast rolling door uses polyester fiber cloth or PVC soft curtain as door curtain material, which has the advantages of strong acid and alkali resistance, aging resistance and good light transmittance. The main purpose of the counterweight device of flexible fast rolling door is to make the door leaf run more smoothly, smoothly and reliably when opening and closing. It mainly includes mounting frame, roller, steel cable and counterweight block. When in use, it is installed and fixed by the mounting frame, and connected to the end of the flexible fast rolling door to be counterweighted by the connecting ring at one end of the steel cable.

[0003] However, when the existing counterweight device of the flexible fast rolling door is in use, impurities are easily adhered to the guide groove on the roller, and the cleaning is not convenient and timely, which affects the normal movement of the steel cable. At the same time, the steel cable often lacks lubrication, which not only causes greater resistance during its movement, but also affects the normal movement of the steel cable, and causes greater noise, thereby affecting the use effect of the counterweight device. Moreover, under abnormal circumstances, such as improper setting of PLC control system parameters, abnormal motor performance, etc., the flexible fast rolling door will be opened and closed at a faster speed, which is not safe and reliable enough.

[0004] Therefore, we propose a counterweight device for flexible fast rolling doors. Summary of the invention

[0005] The object of the present invention is to provide a counterweight device for a flexible fast rolling door to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a counterweight device for a flexible fast rolling door, comprising a mounting frame arranged on a counterweight device body, and the top of the mounting frame is fixedly connected to two symmetrically arranged support plates, the opposite side walls of the two support plates are rotatably connected to rollers through a first rotating shaft, and the side walls of the rollers are provided with an annular guide groove, a steel cable is slidably connected in the guide groove, the upper end of the steel cable is fixedly connected to a connecting ring, and the lower end of the steel cable is fixedly connected to a counterweight block, the top of the mounting frame is provided with a cleaning mechanism for automatically cleaning the guide groove, and the top of the mounting frame is provided with a lubricating mechanism for automatically lubricating the steel cable, and the side walls of the support plates are provided with a speed limiting mechanism for limiting the speed of rotation of the first rotating shaft;

[0007] The cleaning mechanism comprises a cleaning block inserted in the guide groove, a side wall of the cleaning block is fixedly connected with a connecting block, and the connecting block is connected to the top of the mounting frame through a telescopic mechanism;

[0008] The lubrication mechanism includes a fixed ring fixedly connected to the top of the mounting frame, and a hollow rotating cover is rotatably connected inside the fixed ring, a ring-shaped sponge is fixedly inserted in the rotating cover, and a plurality of oil outlet holes arranged in an array are opened on the side wall of the rotating cover close to the sponge, an oil supply mechanism for supplying lubricating oil into the rotating cover is provided on the side wall of the support plate, and the rotation of the rotating cover is driven by a driving mechanism.

[0009] Preferably, the telescopic mechanism includes two symmetrically arranged sleeve rods fixedly connected to the bottom of the connecting block, and the side wall of each sleeve rod is sleeved with a sleeve, the lower end of the sleeve is fixed to the top of the mounting frame, the side wall of each sleeve is sleeved with a first spring, and the top of the mounting frame is provided with a detection mechanism for detecting the movement of the connecting block.

[0010] Preferably, the detection mechanism comprises an L-shaped block fixedly connected to the top of the mounting frame, and a distance sensor is fixedly inserted into the top of the L-shaped block.

[0011] Preferably, the oil supply mechanism includes an L-shaped frame fixedly connected to the side wall of the support plate, and the top of the L-shaped frame is fixedly connected to an oil storage tank, the bottom of the oil storage tank is fixedly connected to an oil supply pipe, and an annular groove is provided at the top of the rotating cover, a rotating ring is rotatably connected in the annular groove, the lower end of the oil supply pipe is fixedly inserted in the top of the rotating ring, and an opening and closing mechanism is provided on the side wall of the oil supply pipe.

[0012] Preferably, the opening and closing mechanism comprises a fixed cover fixedly inserted in the side wall of the oil supply pipe, and a movable plate is connected to the fixed cover via a movable mechanism, and a through hole is opened on the top of the movable plate.

[0013] Preferably, the moving mechanism includes a connecting plate fixedly connected to the side wall of the moving plate, and the other end of the connecting plate is fixedly connected to a pushing plate, the side wall fixing sleeve of the first rotating shaft is provided with a ring, and the side wall of the ring is connected to a plurality of metal balls arranged in an array through a plurality of telescopic components, and a reset mechanism is provided between the moving plate and the fixed cover.

[0014] Preferably, each of the telescopic components includes a fixed tube fixedly connected to the side wall of the circular ring, and a disc is slidably connected inside the fixed tube, the end of the disc is fixedly connected to a moving rod, and the other end of the moving rod is fixed to the side wall of the metal ball, the side wall of the moving rod is sleeved with a second spring, and the two ends of the second spring are respectively fixed to the disc and the end of the fixed tube.

[0015] Preferably, the reset mechanism includes a first support block fixedly connected to the side wall of the movable plate, and the side wall of the first support block is fixedly connected to a T-shaped guide rod, the side wall of the T-shaped guide rod is sleeved with a second support block, the second support block is fixed to the side wall of the fixed cover, and the side wall of each T-shaped guide rod is sleeved with a third spring.

[0016] Preferably, the driving mechanism includes a fixing plate fixedly connected to the bottom of the fixing ring, and the side wall of the fixing plate is rotatably connected to the first rubber wheel via a second rotating shaft, the side wall fixing sleeve of the second rotating shaft is provided with a driving bevel gear, and the top of the fixing ring is rotatably connected to the second rubber wheel via a third rotating shaft, the lower end of the third rotating shaft is fixedly connected to a driven bevel gear, and the driven bevel gear is meshed with the driving bevel gear.

[0017] Preferably, the speed limiting mechanism comprises an arc-shaped friction plate fixedly connected to the side wall of the support plate, and two symmetrically arranged guide plates are fixedly connected to both ends of the friction plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention is provided with a cleaning mechanism and a detection mechanism, etc., and when in use, the counterweight device body is fixedly installed through the mounting hole on the mounting frame and the fixing piece, and the end to be counterweighted of the flexible fast rolling door is connected to the flexible fast rolling door through the connecting ring at one end of the steel cable. During the opening and closing process of the flexible fast rolling door, the counterweight block is driven by the steel cable to move up and down. At the same time, when the steel cable moves, it can drive the roller to rotate along the first rotating shaft. Under the action of the first spring, the cleaning block can be abutted against the side wall of the guide groove, so that the cleaning block can be used to automatically scrape and clean the guide groove during the rotation of the roller, so that the movement of the steel cable is smoother and the counterweight effect is ensured. Moreover, when the side wall of the guide groove is adhered with impurities that are difficult to clean, the cleaning block and the connecting block are pushed to move downward. At the same time, the first spring is compressed, so as to avoid the roller from being stuck and ensure its normal rotation. Moreover, when the distance sensor detects the movement of the connecting block, an alarm is given through an external alarm to remind the staff to perform manual cleaning and maintenance to ensure its normal use effect.

[0020] The present invention is provided with a lubrication mechanism, etc., and when in use, when the first rotating shaft rotates, the plurality of metal balls are driven to rotate through the circular ring and the telescopic assembly, and the metal balls are moved in a direction away from the circular ring under the action of centrifugal force. At the same time, the second spring is compressed, and the metal balls are abutted against the side wall of the pushing plate, so that the movable plate is pushed to slide into the fixed cover through the connecting plate, so that the through hole and the oil supply pipe coincide with each other. At the same time, the third spring is compressed. At this time, the lubricating oil in the oil storage tank can enter the rotating cover through the oil supply pipe and the through hole, and enter the sponge through the oil outlet hole, and then be coated on the surface of the steel cable, so that the steel cable can be automatically lubricated, so that it moves more smoothly, reduces noise, and ensures the effect of the counterweight. When the steel cable and the counterweight stop moving, the metal balls can move and reset under the action of the second spring and disengage from the pushing plate. At this time, the movable plate can move and reset in a direction away from the fixed cover under the action of the third spring, and the oil supply pipe is blocked and sealed. At this time, lubricating oil is no longer supplied to the rotating cover, so as to avoid waste of lubricating oil.

[0021] The present invention provides a driving mechanism, etc., so that when lubrication is performed, when the steel cable moves, the first rubber wheel and the second rotating shaft can be pushed to rotate, thereby driving the active bevel gear and the driven bevel gear to rotate, and then driving the third rotating shaft and the second rubber wheel to rotate. When the second rubber wheel rotates, the rotating cover and the sponge are driven to rotate, so that the coating of the lubricating oil on the surface of the steel cable is more uniform, and the lubrication effect is better.

[0022] The present invention is provided with a speed limiting mechanism, etc., when in use, when the first rotating shaft rotates, multiple metal balls are driven to rotate through the circular ring and the telescopic assembly, and under the action of centrifugal force, the metal balls move in the direction away from the circular ring. At the same time, the second spring is compressed. When the moving speed of the steel cable and the counterweight block is faster, the rotation speed of the first rotating shaft is faster, the centrifugal force exerted on the metal balls is greater, and the moving stroke of the metal balls is greater, so that the metal balls can slide along the guide plate to the inner wall of the friction plate, so that the metal balls and the friction plate are decelerated by friction, thereby limiting the speed of the movement of the steel cable and the counterweight block, and further limiting the speed of opening and closing of the flexible fast rolling door, which is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective;

[0025] Figure 3 It is a schematic diagram of the position of the oil supply mechanism in the present invention;

[0026] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0028] Figure 6 for Figure 3 Enlarged view of point C in the middle;

[0029] Figure 7 for Figure 4 Enlarged view of point D in the middle;

[0030] Figure 8 for Figure 5 Enlarged view of point E in the middle;

[0031] Fig. 9 for Figure 6 Enlarged view of point F in the middle.

[0032] In the figure: 1. counterweight device body; 101. mounting frame; 102. support plate; 103. first rotating shaft; 104. roller; 105. steel cable; 106. connecting ring; 107. counterweight block; 108. guide groove; 2. telescopic mechanism; 201. sleeve rod; 202. sleeve tube; 203. first spring; 3. detection mechanism; 301. L-shaped block; 302. distance sensor; 4. oil supply mechanism; 401. L-shaped frame; 402. oil storage tank; 403. oil supply pipe; 405. annular groove; 406. rotating ring; 5. opening and closing mechanism; 501. fixed cover; 502. movable plate; 503. through hole; 6. reset mechanism; 601. first supporting block; 602. T-shaped guide rod; 603. second supporting block; 604. third spring ;7. Moving mechanism;701. Connecting plate;702. Pushing plate;703. Ring;704. Metal ball;8. Telescopic assembly;801. Fixed tube;802. Moving rod;803. Disc;804. Second spring;9. Speed ​​limiting mechanism;901. Friction plate;902. Guide plate;10. Driving mechanism;1001. Fixed plate;1002. Second rotating shaft;1003. First rubber wheel;1004. Active bevel gear;1005. Third rotating shaft;1006. Second rubber wheel;1007. Driven bevel gear;11. Cleaning mechanism;1101. Connecting block;1102. Cleaning block;12. Lubricating mechanism;1201. Fixed ring;1202. Rotating cover;1203. Oil outlet;1204. Sponge. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 9 The counterweight device of the flexible fast rolling door shown in the figure includes a mounting frame 101 arranged on the counterweight device body 1, and the top of the mounting frame 101 is fixedly connected to two symmetrically arranged support plates 102, and the opposite side walls of the two support plates 102 are rotatably connected to rollers 104 through a first rotating shaft 103, and the side walls of the rollers 104 are provided with an annular guide groove 108, and a steel cable 105 is slidably connected in the guide groove 108, and the upper end of the steel cable 105 is fixedly connected to a connecting ring 106, and the lower end of the steel cable 105 is fixedly connected to a counterweight block 107, and the top of the mounting frame 101 is provided with a cleaning mechanism 11 for automatically cleaning the guide groove 108, and the top of the mounting frame 101 is provided with a lubrication mechanism 12 for automatically lubricating the steel cable 105, and the side walls of the support plates 102 are provided with a speed limiting mechanism 9 for limiting the speed of the rotation of the first rotating shaft 103;

[0035] The cleaning mechanism 11 includes a cleaning block 1102 inserted into the guide groove 108, a side wall of the cleaning block 1102 is fixedly connected with a connecting block 1101, and the connecting block 1101 is connected to the top of the mounting frame 101 through the telescopic mechanism 2;

[0036] The lubricating mechanism 12 comprises a fixed ring 1201 fixedly connected to the top of the mounting frame 101, and a hollow rotating cover 1202 is rotatably connected in the fixed ring 1201, a ring-shaped sponge 1204 is fixedly inserted in the rotating cover 1202, and a plurality of oil outlet holes 1203 arranged in an array are opened on the side wall of the rotating cover 1202 near the sponge 1204, an oil supply mechanism 4 for supplying lubricating oil into the rotating cover 1202 is provided on the side wall of the support plate 102, and the rotation of the rotating cover 1202 is driven by the driving mechanism 1 0 is driven, and the guide groove 108 can be automatically scraped and cleaned. When the side wall of the guide groove 108 is adhered with impurities that are difficult to clean, an external alarm is used to alert the staff to perform manual cleaning and maintenance to ensure its normal use effect; the steel cable 105 can be automatically lubricated to make it move more smoothly, reduce noise, and ensure the effect of the counterweight; the movement of the steel cable 105 and the counterweight block 107 can be limited in speed, and then the opening and closing of the flexible fast rolling door can be limited in speed, which is safer and more reliable.

[0037] The telescopic mechanism 2 includes two symmetrically arranged sleeve rods 201 fixedly connected to the bottom of the connecting block 1101, and the side wall of each sleeve rod 201 is sleeved with a sleeve 202, the lower end of the sleeve 202 is fixed to the top of the mounting frame 101, and the side wall of each sleeve 202 is sleeved with a first spring 203, and the top of the mounting frame 101 is provided with a detection mechanism 3 for detecting the movement of the connecting block 1101. Under the action of the first spring 203, the cleaning block 1102 can be abutted against the side wall of the guide groove 108 to ensure the cleaning effect, and when the side wall of the guide groove 108 is adhered with impurities that are difficult to clean, the cleaning block 1102 and the connecting block 1101 will be pushed to move downward. At the same time, the first spring 203 is compressed, thereby avoiding the roller 104 from getting stuck and ensuring its normal rotation. After detection by the detection mechanism 3, an alarm is given through an external alarm.

[0038] The detection mechanism 3 includes an L-shaped block 301 fixedly connected to the top of the mounting frame 101, and a distance sensor 302 is fixedly inserted on the top of the L-shaped block 301. The distance sensor 302 is electrically connected to an external alarm. When the distance sensor 302 detects the movement of the connection block 1101, an alarm is sounded through the external alarm to remind the staff to perform manual cleaning and maintenance to ensure its normal use effect.

[0039] The oil supply mechanism 4 includes an L-shaped frame 401 fixedly connected to the side wall of the support plate 102, and the top of the L-shaped frame 401 is fixedly connected to an oil storage tank 402, the bottom of the oil storage tank 402 is fixedly connected to an oil supply pipe 403, and an annular groove 405 is provided on the top of the rotating cover 1202, a rotating ring 406 is rotatably connected in the annular groove 405, the lower end of the oil supply pipe 403 is fixedly inserted in the top of the rotating ring 406, and an opening and closing mechanism 5 is provided on the side wall of the oil supply pipe 403. When in use, when the first rotating shaft 103 rotates, the opening and closing mechanism 5 is opened. At this time, the lubricating oil in the oil storage tank 402 can enter the rotating cover 1202 through the oil supply pipe 403 and the through hole 503, and enter the sponge 1204 through the oil outlet 1203, and then be coated on the surface of the steel cable 105, so that the steel cable 105 can be automatically lubricated, so that it moves more smoothly, reduces noise, and ensures the counterweight effect.

[0040] The opening and closing mechanism 5 includes a fixed cover 501 fixedly inserted on the side wall of the oil supply pipe 403, and a movable plate 502 is connected to the fixed cover 501 through a movable mechanism 7, and a through hole 503 is opened on the top of the movable plate 502. The movable plate 502 is allowed to slide in the fixed cover 501 through the movable mechanism 7. When the movable plate 502 slides into the fixed cover 501, the through hole 503 coincides with the oil supply pipe 403. At this time, the opening and closing mechanism 5 is opened. When the movable plate 502 moves to a direction away from the fixed cover 501 and resets, the through hole 503 is offset from the oil supply pipe 403. At this time, the movable plate 502 is used to block and seal the oil supply pipe 403, and the opening and closing mechanism 5 is closed.

[0041] The moving mechanism 7 includes a connecting plate 701 fixedly connected to the side wall of the moving plate 502, and the other end of the connecting plate 701 is fixedly connected to a pushing plate 702, the side wall of the first rotating shaft 103 is fixedly sleeved with a ring 703, and the side wall of the ring 703 is connected to a plurality of metal balls 704 arranged in an array through a plurality of telescopic components 8, and a reset mechanism 6 is arranged between the moving plate 502 and the fixed cover 501. When the first rotating shaft 103 rotates, the plurality of metal balls 704 are driven to rotate through the ring 703 and the telescopic component 8. Under the action of centrifugal force, the metal balls 704 move in a direction away from the ring 703, and the metal balls 704 are abutted against the side wall of the pushing plate 702, thereby pushing the moving plate 502 to slide into the fixed cover 501 through the connecting plate 701.

[0042] Each telescopic assembly 8 includes a fixed tube 801 fixedly connected to the side wall of the ring 703, and a disc 803 is slidably connected inside the fixed tube 801, a moving rod 802 is fixedly connected to the end of the disc 803, and the other end of the moving rod 802 is fixed to the side wall of the metal ball 704, and a second spring 804 is sleeved on the side wall of the moving rod 802, and the two ends of the second spring 804 are respectively fixed to the disc 803 and the end of the fixed tube 801, which guides and resets the movement of the metal ball 704.

[0043] The reset mechanism 6 includes a first support block 601 fixedly connected to the side wall of the movable plate 502, and the side wall of the first support block 601 is fixedly connected to a T-shaped guide rod 602, the side wall of the T-shaped guide rod 602 is sleeved with a second support block 603, the second support block 603 is fixed to the side wall of the fixed cover 501, and the side wall of each T-shaped guide rod 602 is sleeved with a third spring 604, which guides and resets the movement of the movable plate 502.

[0044] The driving mechanism 10 includes a fixing plate 1001 fixedly connected to the bottom of a fixing ring 1201, and the side wall of the fixing plate 1001 is rotatably connected to a first rubber wheel 1003 through a second rotating shaft 1002, a driving bevel gear 1004 is fixedly sleeved on the side wall of the second rotating shaft 1002, and the top of the fixing ring 1201 is rotatably connected to a second rubber wheel 1006 through a third rotating shaft 1005, and a driven bevel gear 1007 is fixedly connected to the lower end of the third rotating shaft 1005, and the driven bevel gear 1007 is connected to the driving bevel gear 1004. The meshing arrangement can push the first rubber wheel 1003 and the second rotating shaft 1002 to rotate when the steel cable 105 moves during lubrication, thereby driving the active bevel gear 1004 and the driven bevel gear 1007 to rotate, and then driving the third rotating shaft 1005 and the second rubber wheel 1006 to rotate. When the second rubber wheel 1006 rotates, it drives the rotating cover 1202 and the sponge 1204 to rotate, so that the coating of the lubricating oil on the surface of the steel cable 105 is more uniform, and the lubrication effect is better.

[0045] The speed limiting mechanism 9 includes an arc-shaped friction plate 901 fixedly connected to the side wall of the support plate 102, and two symmetrically arranged guide plates 902 are fixedly connected to the two ends of the friction plate 901. When in use, when the first rotating shaft 103 rotates, the plurality of metal balls 704 are driven to rotate through the ring 703 and the telescopic assembly 8. Under the action of centrifugal force, the metal balls 704 move in a direction away from the ring 703. At the same time, the second spring 804 is compressed. When the moving speed of the steel cable 105 and the counterweight block 107 is faster, the rotation speed of the first rotating shaft 103 is faster, the centrifugal force exerted on the metal balls 704 is greater, and the moving stroke of the metal balls 704 is greater, so that the metal balls 704 can slide along the guide plate 902 to the inner side wall of the friction plate 901, so that the metal balls 704 and the friction plate 901 are frictionally decelerated, so that the movement of the steel cable 105 and the counterweight block 107 can be limited, and then the opening and closing of the flexible fast rolling door can be limited, which is safer and more reliable.

[0046] Working principle: When in use, the counterweight device body 1 is fixedly installed through the mounting hole on the mounting frame 101 and the fixing piece, and the end to be counterweighted of the flexible fast rolling door is connected through the connecting ring 106 at one end of the steel cable 105. During the opening and closing process of the flexible fast rolling door, the counterweight block 107 is driven up and down by the steel cable 105. At the same time, when the steel cable 105 moves, it can drive the roller 104 to rotate along the first rotating shaft 103. Under the action of the first spring 203, the cleaning block 1102 can be abutted against the side wall of the guide groove 108, so that the cleaning block 1102 can be used to automatically scrape and clean the guide groove 108 during the rotation of the roller 104, so that the movement of the steel cable 105 is smoother, and the counterweight effect is guaranteed;

[0047] When the side wall of the guide groove 108 is adhered with impurities that are difficult to clean, the cleaning block 1102 and the connecting block 1101 are pushed to move downward, and at the same time, the first spring 203 is compressed, thereby preventing the roller 104 from getting stuck and ensuring its normal rotation. In addition, when the distance sensor 302 detects the movement of the connecting block 1101, an alarm is sounded through an external alarm to remind the staff to perform manual cleaning and maintenance to ensure its normal use effect.

[0048] At the same time, when the first rotating shaft 103 rotates, the plurality of metal balls 704 are driven to rotate through the circular ring 703 and the telescopic assembly 8. Under the action of centrifugal force, the metal balls 704 move away from the circular ring 703. At the same time, the second spring 804 is compressed, and the metal balls 704 are pressed against the side wall of the pushing plate 702, thereby pushing the moving plate 502 to slide into the fixed cover 501 through the connecting plate 701, so that the through hole 503 coincides with the oil supply pipe 403. At the same time, the third spring 604 is compressed. At this time, the lubricating oil in the oil storage tank 402 can enter the rotating cover 1202 through the oil supply pipe 403 and the through hole 503. , and enters the sponge 1204 through the oil outlet 1203, and then is coated on the surface of the steel cable 105, so that the steel cable 105 can be automatically lubricated, making it move more smoothly, reducing noise, and ensuring the effect of the counterweight. When the steel cable 105 and the counterweight block 107 stop moving, the metal ball 704 can move and reset under the action of the second spring 804 and disengage from the push plate 702. At this time, the moving plate 502 can move and reset in the direction away from the fixed cover 501 under the action of the third spring 604, and the oil supply pipe 403 is blocked and sealed. At this time, lubricating oil is no longer supplied to the rotating cover 1202, avoiding waste of lubricating oil;

[0049] Moreover, during lubrication, when the steel cable 105 moves, it can push the first rubber wheel 1003 and the second rotating shaft 1002 to rotate, thereby driving the active bevel gear 1004 and the driven bevel gear 1007 to rotate, and then driving the third rotating shaft 1005 and the second rubber wheel 1006 to rotate. When the second rubber wheel 1006 rotates, it drives the rotating cover 1202 and the sponge 1204 to rotate, so that the coating of the lubricating oil on the surface of the steel cable 105 is more uniform, and the lubrication effect is better.

[0050] When the first rotating shaft 103 rotates, the multiple metal balls 704 are driven to rotate through the circular ring 703 and the telescopic assembly 8. Under the action of centrifugal force, the metal balls 704 move in the direction away from the circular ring 703. At the same time, the second spring 804 is compressed. When the moving speed of the steel cable 105 and the counterweight block 107 is faster, the rotation speed of the first rotating shaft 103 is faster, the centrifugal force exerted on the metal balls 704 is greater, and the moving stroke of the metal balls 704 is greater, so that they can slide along the guide plate 902 to the inner wall of the friction plate 901, so that the metal balls 704 and the friction plate 901 are decelerated by friction, thereby limiting the speed of the movement of the steel cable 105 and the counterweight block 107, and then limiting the speed of opening and closing of the flexible fast rolling door, which is safer and more reliable.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A counterweight device for a flexible fast rolling door, comprising a mounting frame (101) arranged on a counterweight device body (1), wherein the top of the mounting frame (101) is fixedly connected to two symmetrically arranged support plates (102), the opposite side walls of the two support plates (102) are rotatably connected to rollers (104) via a first rotating shaft (103), and the side walls of the rollers (104) are provided with an annular guide groove (108), a steel cable (105) is slidably connected in the guide groove (108), the upper end of the steel cable (105) is fixedly connected to a connecting ring (106), and the lower end of the steel cable (105) is fixedly connected to a counterweight block (107), characterized in that: The top of the mounting frame (101) is provided with a cleaning mechanism (11) for automatically cleaning the guide groove (108), and the top of the mounting frame (101) is provided with a lubricating mechanism (12) for automatically lubricating the steel cable (105), and the side wall of the support plate (102) is provided with a speed limiting mechanism (9) for limiting the speed of rotation of the first rotating shaft (103); The cleaning mechanism (11) comprises a cleaning block (1102) inserted into the guide groove (108); a side wall of the cleaning block (1102) is fixedly connected to a connecting block (1101), and the connecting block (1101) is connected to the top of the mounting frame (101) via a telescopic mechanism (2); The lubricating mechanism (12) comprises a fixed ring (1201) fixedly connected to the top of the mounting frame (101), and a hollow rotating cover (1202) is rotatably connected inside the fixed ring (1201), a ring-shaped sponge (1204) is fixedly inserted inside the rotating cover (1202), and a plurality of oil outlet holes (1203) arranged in an array are provided on the side wall of the rotating cover (1202) close to the sponge (1204), an oil supply mechanism (4) for supplying lubricating oil into the rotating cover (1202) is provided on the side wall of the support plate (102), and the rotation of the rotating cover (1202) is driven by the driving mechanism (10).

2. The counterweight device for a flexible fast rolling door according to claim 1, characterized in that: The telescopic mechanism (2) comprises two symmetrically arranged sleeve rods (201) fixedly connected to the bottom of the connecting block (1101), and the side wall of each sleeve rod (201) is sleeved with a sleeve (202), the lower end of the sleeve (202) is fixed to the top of the mounting frame (101), the side wall of each sleeve (202) is sleeved with a first spring (203), and the top of the mounting frame (101) is provided with a detection mechanism (3) for detecting the movement of the connecting block (1101).

3. The counterweight device for the flexible fast rolling door according to claim 2 is characterized in that: The detection mechanism (3) comprises an L-shaped block (301) fixedly connected to the top of the mounting frame (101), and a distance sensor (302) is fixedly inserted into the top of the L-shaped block (301).

4. The counterweight device for the flexible fast rolling door according to claim 3 is characterized in that: The oil supply mechanism (4) comprises an L-shaped frame (401) fixedly connected to the side wall of the support plate (102), and the top of the L-shaped frame (401) is fixedly connected to an oil storage tank (402), the bottom of the oil storage tank (402) is fixedly connected to an oil supply pipe (403), and the top of the rotating cover (1202) is provided with an annular groove (405), a rotating ring (406) is rotatably connected in the annular groove (405), the lower end of the oil supply pipe (403) is fixedly inserted into the top of the rotating ring (406), and the side wall of the oil supply pipe (403) is provided with an opening and closing mechanism (5).

5. The counterweight device for the flexible fast rolling door according to claim 4 is characterized in that: The opening and closing mechanism (5) comprises a fixed cover (501) fixedly inserted into the side wall of the oil supply pipe (403), and a movable plate (502) is connected to the fixed cover (501) via a movable mechanism (7), and a through hole (503) is opened on the top of the movable plate (502).

6. The counterweight device for a flexible fast rolling door according to claim 5, characterized in that: The moving mechanism (7) comprises a connecting plate (701) fixedly connected to the side wall of the moving plate (502), and the other end of the connecting plate (701) is fixedly connected to the pushing plate (702), the side wall of the first rotating shaft (103) is fixedly sleeved with a circular ring (703), and the side wall of the circular ring (703) is connected to a plurality of metal balls (704) arranged in an array through a plurality of telescopic components (8), and a reset mechanism (6) is arranged between the moving plate (502) and the fixed cover (501).

7. The counterweight device for a flexible fast rolling door according to claim 6, characterized in that: Each of the telescopic components (8) comprises a fixed tube (801) fixedly connected to the side wall of the circular ring (703), and a circular disc (803) is slidably connected inside the fixed tube (801), a moving rod (802) is fixedly connected to the end of the circular disc (803), and the other end of the moving rod (802) is fixed to the side wall of the metal ball (704), a second spring (804) is sleeved on the side wall of the moving rod (802), and the two ends of the second spring (804) are respectively fixed to the circular disc (803) and the end of the fixed tube (801).

8. The counterweight device for a flexible fast rolling door according to claim 6, characterized in that: The reset mechanism (6) comprises a first support block (601) fixedly connected to the side wall of the movable plate (502), and the side wall of the first support block (601) is fixedly connected to a T-shaped guide rod (602), the side wall of the T-shaped guide rod (602) is sleeved with a second support block (603), the second support block (603) is fixed to the side wall of the fixed cover (501), and the side wall of each T-shaped guide rod (602) is sleeved with a third spring (604).

9. The counterweight device for a flexible fast rolling door according to claim 1, characterized in that: The driving mechanism (10) comprises a fixing plate (1001) fixedly connected to the bottom of a fixing ring (1201), and a side wall of the fixing plate (1001) is rotatably connected to a first rubber wheel (1003) via a second rotating shaft (1002), a driving bevel gear (1004) is fixedly sleeved on the side wall of the second rotating shaft (1002), and a top of the fixing ring (1201) is rotatably connected to a second rubber wheel (1006) via a third rotating shaft (1005), a lower end of the third rotating shaft (1005) is fixedly connected to a driven bevel gear (1007), and the driven bevel gear (1007) is meshed with the driving bevel gear (1004).

10. The counterweight device for a flexible fast rolling door according to claim 1, characterized in that: The speed limiting mechanism (9) comprises an arc-shaped friction plate (901) fixedly connected to the side wall of the support plate (102), and two symmetrically arranged guide plates (902) are fixedly connected to both ends of the friction plate (901).

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