Anti-falling mechanism for lifting door

Abstract

The utility model discloses an anti-falling mechanism for a lifting door, which relates to the technical field of lifting doors, and comprises a guide rail and a door body, an anti-falling component which can better support the door body is mounted on the guide rail, a servo motor is mounted on one side of the guide rail, a driving end of the servo motor is connected with a connecting rod, and the connecting rod is connected with a lifting door. According to the lifting door anti-falling device, when the induction device in the plant induces that the lifting door falls suddenly, the induction device transmits an electric signal to the servo motor, the servo motor drives the lead screw to rotate through the connecting rod, and the anti-falling block is in threaded connection with the outer wall of the lead screw. When the door body falls suddenly, the anti-falling block slides towards the direction of the guide rail, the rotating rod rotates to release the pull rope wound on the rotating rod, the elastic force of the telescopic spring enables the insertion block to be opened towards the two sides and inserted into the first square hole matched with the insertion block in the guide rail, when the door body falls suddenly, the anti-falling block is supported more stably, and the safety of using the door body is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting doors, and in particular relates to an anti-falling mechanism for lifting doors. Background Art

[0002] Lifting doors are a type of industrial door, usually used in industrial plants, warehouses and other places that require a larger door opening. Compared with common gates, lifting doors have a larger opening area, which can facilitate the entry and exit of vehicles and personnel.

[0003] The existing patent (application number: CN202022252898.5) proposes an anti-fall mechanism for an electromagnetic shielding lifting door, comprising a side door frame, an upper door frame, a steel cable, and a door panel. Both sides of the door panel slide up and down along the slide groove in the side door frame. A steel cable is provided above the door panel, and the steel cable drives the door panel to move up and down. A weight sensor is provided on the steel cable. An anti-fall slider is provided on one side of the side door frame, and the other end of the anti-fall slider is connected to a piston rod, and the other end of the piston rod is connected to a pushing mechanism. A through groove capable of accommodating the anti-fall slider is provided on the side door frame, and a side groove capable of accommodating the anti-fall slider is provided on the door panel. The anti-fall slider extends into and out of the side groove through the through groove driven by the piston rod. The weight sensor and the pushing structure are connected to a controller through a signal line for data exchange. The mechanical design of the anti-fall system is simple to install, and the fully automatic operating system has a sensitive sensing system and a quick response. It can timely and accurately prevent the sudden fall of the lifting door, ensuring product and personal safety.

[0004] In the above device, when the lifting door suddenly falls, the weight of the door panel is too heavy, or in extreme cases, unexpected situations such as the steel cable breaks, a piston rod alone may not be able to effectively prevent the door panel from falling. In this case, the door panel may be supported by the piston rod for a short period of time, and the lifting door may still fall suddenly due to the breakage of the piston rod during support, causing a safety accident.

[0005] In view of this, this application is hereby filed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an anti-falling mechanism for a lifting door to achieve the purpose of better stability of the anti-falling block.

[0007] In order to solve the above technical problems, the utility model provides an anti-fall mechanism for lifting doors, including a guide rail and a door body, the guide rail is equipped with an anti-fall component that better supports the door body, a servo motor is installed on one side of the guide rail, the driving end of the servo motor is connected to a connecting rod, the end of the connecting rod away from the servo motor is connected to a screw rod, the outer wall of the screw rod is threadedly connected to an anti-fall block, a rotating rod is installed under the screw rod, the external transmission of the connecting rod and the rotating rod is connected by a belt, two pull ropes are wrapped around the rotating rod, the end of the pull rope away from the rotating rod is connected to an insert block, and the outside of the pull rope is sleeved with a telescopic spring.

[0008] Furthermore, the guide rail is provided with two first square holes adapted to the plug block, two connecting plates are installed inside the anti-fall block, the rotating rod is rotatably connected between the two connecting plates, the telescopic spring is installed between the connecting plates and the anti-fall block, and the anti-fall block is provided with two third square holes adapted to the plug block.

[0009] Furthermore, a fixed block is fixedly sleeved on the outer wall of the servo motor, two guide rods are connected to one side of the fixed block, the anti-fall block is slidably connected to the outer wall of the guide rod, the rotating rod is rotatably connected to one side of the fixed block, and the end of the rotating rod away from the servo motor is rotatably connected to the anti-fall block.

[0010] Furthermore, a first blocking block is connected between the connecting rod and the screw rod, two second blocking blocks are connected to the outer wall of the rotating rod, a support plate is installed at the bottom of the guide rail, and a second square hole adapted to the anti-fall block is opened on one side of the guide rail.

[0011] Furthermore, the plug block is slidably connected to the anti-fall block, a plurality of circular through holes adapted to the pull rope are provided on the connecting plate, a clamping block is connected to the top of the rotating rod, and a circular hole adapted to the rotating rod is provided on the anti-fall block.

[0012] Furthermore, a damper is connected to the bottom of the door body, a pressure plate is installed at the bottom of the damper, a shock-absorbing spring is sleeved on the outside of the damper, and the shock-absorbing spring is connected between the door body and the pressure plate.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0014] 1. In the utility model, when the sensing device in the factory senses that the lifting door suddenly falls, the sensing device transmits an electrical signal to the servo motor, and the servo motor drives the screw rod to rotate through the connecting rod, the anti-fall block will slide in the direction of the guide rail, and the rotating rod will also rotate to release the pull rope wrapped around the rotating rod. The elastic force of the telescopic spring will cause the plug block to be stretched to both sides and inserted into the first square hole on the guide rail that is compatible with the plug block. When the door body suddenly falls, the anti-fall block is supported more stably, and the safety of using the door body will be improved.

[0015] 2. In the utility model, when the door body falls suddenly, the mutual cooperation of the damper and the shock-absorbing spring can reduce the damage to the door body caused by the impact of the anti-fall block when the door body falls suddenly. When controlling the door body to descend normally, the damper and the shock-absorbing spring can play a buffering and shock-absorbing role. The function of the damper is to provide resistance to movement and consume the movement energy of the door body. At the same time, because of the damper, shock-absorbing spring and pressure plate, the damage to the bottom of the door body caused by the direct impact of the ground can also be reduced, and the noise caused by closing the door body can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of an anti-falling mechanism for lifting doors of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of an anti-falling mechanism for a lifting door of the utility model;

[0019] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0021] Numbers in the figure:

[0022] 1. Guide rail;

[0023] 2. Anti-fall assembly; 201. servo motor; 202. connecting rod; 203. screw rod; 204. anti-fall block; 205. belt; 206. rotating rod; 207. pull rope; 208. telescopic spring; 209. plug block;

[0024] 3. Door body; 4. Damper; 5. Shock-absorbing spring; 6. Pressure plate; 7. Connecting plate; 8. Guide rod; 9. Round hole; 10. Block.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the above device, when the lifting door suddenly falls, the weight of the door panel is too heavy, or in extreme cases, unexpected situations such as the steel cable breaks, a piston rod alone may not be able to effectively prevent the door panel from falling. In this case, the door panel may be supported by the piston rod for a short period of time, and the lifting door may still fall suddenly due to the breakage of the piston rod during support, causing a safety accident.

[0030] like Figures 1 to 4 The utility model provides an anti-falling mechanism for a lifting door.

[0031] Specifically, by Figure 1-4Provided is a fall prevention mechanism for a lifting door, comprising a guide rail 1 and a door body 3, an fall prevention assembly 2 for better supporting the door body 3 being installed on the guide rail 1, a servo motor 201 being installed on one side of the guide rail 1, a connecting rod 202 being connected to a driving end of the servo motor 201, a screw rod 203 being connected to an end of the connecting rod 202 away from the servo motor 201, an anti-fall block 204 being threadedly connected to an outer wall of the screw rod 203, a rotating rod 206 being installed below the screw rod 203, a belt 205 being connected to an external transmission of the connecting rod 202 and the rotating rod 206, two pull ropes 207 being wound around the rotating rod 206, an insert block 209 being connected to an end of the pull rope 207 away from the rotating rod 206, a telescopic spring 208 being sleeved on the outer side of the pull rope 207.

[0032] In the utility model, when the induction device in the factory senses that the lifting door suddenly falls, the induction device transmits an electrical signal to the servo motor 201, and the servo motor 201 drives the screw rod 203 to rotate through the connecting rod 202, and the anti-fall block 204 will slide in the direction of the guide rail 1. Because the distance between the screw rod 203 and the guide rail 1 is short, the servo motor 201 runs quickly to drive the screw rod 203 to make the anti-fall block 204 move quickly into the guide rail 1. The rotating rod 206 is composed of multiple sleeves, which are sleeved with each other. The front end of the sleeve with the smallest diameter of the anti-fall block 204 is provided with a card block 10, and the anti-fall block 204 is provided with a cylindrical chamber, the diameter of the cylindrical chamber is the same as the diameter of the card block 10, and the opening diameter of the cylindrical chamber is the same as the rotating rod 20 6 is adapted to the minimum diameter of the anti-fall block 204, when the anti-fall block 204 slides outward, the block 10 is stuck, and the pull rope 207 connected to the rotating rod 206 is at the front end of the rotating rod 206. When the large-diameter sleeve is sleeved on the small-diameter cylinder, the wrapped end of the pull rope 207 will not affect the shrinkage effect of the rotating rod 206. When the thinnest end of the rotating rod 206 is pulled out, the rotating rod 206 will also rotate to release the pull rope 207 wrapped around the rotating rod 206, and the elastic force of the telescopic spring 208 will make the plug block 209 open to both sides and be inserted into the first square hole on the guide rail 1 that is adapted to the plug block 209. When the door body 3 suddenly falls, the anti-fall block 204 is supported more stably, and the safety of using the door body 3 will be improved.

[0033] The second square hole is wider than the width of the anti-fall block 204. When the plug block 209 is retracted into the interior of the anti-fall block 204, part of it may remain outside. The sum of the width of the anti-fall block 204 itself and the width of the plug block 209 remaining outside can be retracted into the wall through the second square hole, and the inner wall of the wall is flush with the inner wall of the second square hole.

[0034] The diameter of the circular hole 9 is the same as the sleeve with the largest diameter on the rotating rod 206 . When the anti-falling block 204 is recovered to the support plate, the sleeve with the largest diameter on the rotating rod 206 can enter the body of the anti-falling block 204 through the circular hole 9 .

[0035] Furthermore, as a specific implementation of the utility model, the utility model provides an anti-falling mechanism for a lifting door.

[0036] Specifically, Figure 1 It is shown that two first square holes compatible with the plug block 209 are provided on the guide rail 1, two connecting plates 7 are installed inside the anti-fall block 204, the rotating rod 206 is rotatably connected between the two connecting plates 7, the telescopic spring 208 is installed between the connecting plate 7 and the anti-fall block 204, and two third square holes compatible with the plug block 209 are provided on the anti-fall block 204.

[0037] In the utility model, the third rectangular hole can facilitate the insertion block 209 to slide out from the inside of the anti-fall block 204, and a square chamber is formed between the two connecting plates 7, which can isolate the rotating rod 206 from the telescopic spring 208. The connecting plate 7 can provide a support for the telescopic spring 208. When the insertion block 209 is retracted, the telescopic spring 208 can be better compressed and reset.

[0038] Furthermore, as another specific implementation of the present invention, the present invention provides an anti-falling mechanism for a lifting door.

[0039] Specifically, Figure 1 It is given that the outer wall of the servo motor 201 is fixedly sleeved with a fixed block, one side of the fixed block is connected to two guide rods 8, the anti-fall block 204 is slidably connected to the outer wall of the guide rod 8, the rotating rod 206 is rotatably connected to one side of the fixed block, and the end of the rotating rod 206 away from the servo motor 201 is rotatably connected to the anti-fall block 204.

[0040] In the utility model, the top of the fixed block is connected to the wall, which can better support the servo motor 201, the screw rod 203, and the rotating rod 206. The fixed block can fix the servo motor 201 at a specific position so that the driving end of the servo motor 201 and the screw rod 203 are at the same horizontal height. The servo motor 201 can better drive the screw rod 203 through the connecting rod 202. The fixed block can also reduce the noise caused by the vibration of the servo motor 201 when it runs at high speed.

[0041] Furthermore, as another specific implementation of the present invention, the present invention provides an anti-falling mechanism for a lifting door.

[0042] Specifically, Figure 1 It is shown that a first blocking block is connected between the connecting rod 202 and the screw rod 203, two second blocking blocks are connected to the outer wall of the rotating rod 206, a support plate is installed at the bottom of the guide rail 1, and a second square hole adapted to the anti-fall block 204 is opened on one side of the guide rail 1.

[0043] In the utility model, the first blocking block and the second blocking block can prevent the belt 205 from shifting during movement, and can better drive the rotating rod 206 to rotate. When the anti-fall block 204 is recovered, the support plate plays a supporting role when recovering the anti-fall block 204, and the second square hole facilitates the storage and release of the anti-fall block 204.

[0044] Furthermore, as another specific implementation of the present invention, the present invention provides an anti-falling mechanism for a lifting door.

[0045] Specifically, Figure 1 It is shown that the plug block 209 is slidably connected to the anti-fall block 204, a plurality of circular through holes adapted to the pull rope 207 are provided on the connecting plate 7, a clamping block 10 is connected to the top of the rotating rod 206, and a circular hole 9 adapted to the rotating rod 206 is provided on the anti-fall block 204.

[0046] In the utility model, the circular through hole can facilitate the retraction and extension of the pull rope 207. The clamping block 10 is stuck inside the anti-falling block 204 when the anti-falling block 204 moves in the direction of the guide rail 1, and the rotating rod 206 can be lengthened. When the anti-falling block 204 is recovered, the inner wall of the anti-falling block 204 supports the clamping block 10, and the multi-section sleeve of the rotating rod 206 can be connected and recovered, so that the length of the rotating rod 206 becomes shorter and is retracted into the interior of the anti-falling block 204.

[0047] Furthermore, as another specific implementation of the present invention, the present invention provides an anti-falling mechanism for a lifting door.

[0048] Specifically, Figure 1 It is shown that a damper 4 is connected to the bottom of the door body 3 , a pressure plate 6 is installed at the bottom of the damper 4 , a shock-absorbing spring 5 is sleeved on the outside of the damper 4 , and the shock-absorbing spring 5 is connected between the door body 3 and the pressure plate 6 .

[0049] In the utility model, when the door body 3 falls suddenly, the mutual cooperation of the damper 4 and the shock-absorbing spring 5 can reduce the damage to the door body 3 caused by the impact of the anti-fall block 204 when the door body 3 falls suddenly. When controlling the door body 3 to descend normally, the damper 4 and the shock-absorbing spring 5 can play a buffering and shock-absorbing role. The function of the damper 4 is to provide resistance to movement and consume the movement energy of the door body 3. At the same time, because of the damper 4, the shock-absorbing spring 5 and the pressure plate 6, the damage to the bottom of the door body 3 caused by the direct impact of the ground on the door body 3 can also be reduced, and the noise caused by closing the door body 3 can be reduced.

[0050] Working principle: When the induction device in the factory senses that the lifting door suddenly falls, the induction device transmits an electrical signal to the servo motor 201, and the servo motor 201 drives the screw rod 203 to rotate through the connecting rod 202, and the anti-fall block 204 will slide in the direction of the guide rail 1. Because the distance from the screw rod 203 to the guide rail 1 is short, the servo motor 201 runs quickly to drive the screw rod 203 to make the anti-fall block 204 move quickly into the guide rail 1. The rotating rod 206 is composed of multiple sleeves, which are connected to each other. The front end of the sleeve with the smallest diameter of the anti-fall block 204 has a card block 10, and the anti-fall block 204 has a cylindrical chamber. The diameter of the cylindrical chamber is the same as the diameter of the card block 10, and the opening diameter of the cylindrical chamber is the same as the rotating rod 206. The pull rope 207 is adapted to the minimum diameter of the anti-fall block 204, and when the anti-fall block 204 slides outward, the block 10 is stuck, and the pull rope 207 connected to the rotating rod 206 is at the front end of the rotating rod 206. When the large-diameter sleeve is sleeved on the small-diameter cylinder, the wrapped end of the pull rope 207 will not affect the shrinkage effect of the rotating rod 206. When the thinnest end of the rotating rod 206 is pulled out, the rotating rod 206 will also rotate to release the pull rope 207 wrapped around the rotating rod 206, and the elastic force of the telescopic spring 208 will make the plug block 209 open to both sides and be inserted into the first square holes on both sides of the guide rail 1 that are adapted to the plug block 209. When the door body 3 suddenly falls, the anti-fall block 204 is supported more stably, and the safety of using the door body 3 will be improved.

[0051] The second square hole is wider than the width of the anti-fall block 204. When the plug block 209 is retracted into the interior of the anti-fall block 204, part of it may remain outside. The sum of the width of the anti-fall block 204 itself and the width of the plug block 209 remaining outside can be retracted into the wall through the second square hole, and the inner wall of the wall is flush with the inner wall of the second square hole.

[0052] The diameter of the circular hole 9 is the same as the sleeve with the largest diameter on the rotating rod 206 . When the anti-falling block 204 is recovered to the support plate, the sleeve with the largest diameter on the rotating rod 206 can enter the body of the anti-falling block 204 through the circular hole 9 .

[0053] When the door body 3 falls suddenly, the mutual cooperation between the damper 4 and the shock-absorbing spring 5 can reduce the damage to the door body 3 caused by the impact of the anti-fall block 204 when the door body 3 falls suddenly. When controlling the door body 3 to descend normally, the damper 4 and the shock-absorbing spring 5 can play a buffering and shock-absorbing role. The function of the damper 4 is to provide resistance to movement and consume the movement energy of the door body 3. At the same time, because of the damper 4, the shock-absorbing spring 5 and the pressure plate 6, the damage to the bottom of the door body 3 caused by the direct impact of the ground can also be reduced, and the noise caused by closing the door body 3 can be reduced.

[0054] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. An anti-falling mechanism for a lifting door, comprising a guide rail (1) and a door body (3), characterized in that: An anti-falling assembly (2) having better support for the door body (3) is installed on the guide rail (1), a servo motor (201) is installed on one side of the guide rail (1), a driving end of the servo motor (201) is connected to a connecting rod (202), an end of the connecting rod (202) away from the servo motor (201) is connected to a screw rod (203), an outer wall of the screw rod (203) is threadedly connected to an anti-falling block (204), a rotating rod (206) is installed below the screw rod (203), an external transmission of the connecting rod (202) and the rotating rod (206) is connected to a belt (205), two pull ropes (207) are wound around the rotating rod (206), an end of the pull rope (207) away from the rotating rod (206) is connected to an insert block (209), and a telescopic spring (208) is sleeved on the outside of the pull rope (207).

2. The anti-falling mechanism for lifting door according to claim 1, characterized in that: The guide rail (1) is provided with two first square holes adapted to match the plug block (209); two connecting plates (7) are installed inside the anti-fall block (204); the rotating rod (206) is rotatably connected between the two connecting plates (7); the telescopic spring (208) is installed between the connecting plate (7) and the anti-fall block (204); and the anti-fall block (204) is provided with two third square holes adapted to match the plug block (209).

3. The anti-falling mechanism for a lifting door according to claim 1, characterized in that: A fixed block is fixedly sleeved on the outer wall of the servo motor (201), one side of the fixed block is connected to two guide rods (8), the anti-fall block (204) is slidably connected to the outer wall of the guide rod (8), the rotating rod (206) is rotatably connected to one side of the fixed block, and one end of the rotating rod (206) away from the servo motor (201) is rotatably connected to the anti-fall block (204).

4. The anti-falling mechanism for a lifting door according to claim 1, characterized in that: A first blocking block is connected between the connecting rod (202) and the screw rod (203), two second blocking blocks are connected to the outer wall of the rotating rod (206), a support plate is installed at the bottom of the guide rail (1), and a second square hole adapted to the anti-falling block (204) is opened on one side of the guide rail (1).

5. The anti-falling mechanism for a lifting door according to claim 2, characterized in that: The insert block (209) is slidably connected to the anti-fall block (204), a plurality of circular through holes matching the pull rope (207) are provided on the connecting plate (7), a clamping block (10) is connected to the top of the rotating rod (206), and a circular hole (9) matching the rotating rod (206) is provided on the anti-fall block (204).

6. The anti-falling mechanism for a lifting door according to claim 1, characterized in that: The bottom of the door body (3) is connected to a damper (4), the bottom of the damper (4) is installed with a pressure plate (6), the outside of the damper (4) is sleeved with a shock absorbing spring (5), and the shock absorbing spring (5) is connected between the door body (3) and the pressure plate (6).

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