Chain type anti-falling lifting door

Abstract

The utility model provides a chained anti-falling lifting door, which belongs to the field of protective doors, aims to solve the problems that the chain of the chained lifting door is abraded and slipped, so that the lifting door falls, and the use safety is influenced, and comprises a fixed mounting frame, a driving motor is fixedly mounted on the right rear side of the bottom of the fixed mounting frame, rotating shafts are fixedly connected to the left side of the driving motor, two rotating shafts are connected to the front side of the bottom of the fixed mounting frame, and driving chains are connected to guide gears fixedly connected to the left end and the right end of each rotating shaft in an engaged mode; a control rod is rotationally connected to the rear side of the bottom of the fixed mounting frame; a gear velometer is fixedly mounted on the right side of the bottom of the fixed mounting frame; according to the chain type anti-falling lifting door, the two anti-falling limiting plates slide in the opposite directions through the deflection shaft wheels, so that the meshing tooth blocks on the opposite side walls of the two anti-falling limiting plates are meshed into the driving chain, the driving chain is fixed, the driving chain is prevented from sliding, the lifting door plate is prevented from falling rapidly, and the service life of the lifting door plate is prolonged. Therefore, the safety of the door plate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective doors, in particular to a chain-type anti-fall lifting door. Background Art

[0002] The overall external protection of the stamping line is a common configuration of stamping lines in the automotive industry. It is used to reduce production line noise and protect the health of employees. The lifting door is an integral part of stamping automation production. Usually, the lifting door is raised and lowered by a guide structure. The traditional guide structure still has various problems and is difficult to meet actual use needs. After a long period of use, the existing chain lifting door will wear out and slip during use, resulting in the risk of the lifting door falling, which affects the safety of use. In addition, the existing anti-fall components will also have delays in controlling the chain due to limit and fixation problems during operation, and cannot be stopped in the first time. Utility Model Content

[0003] The purpose of the present utility model is to provide a chain-type anti-fall lifting door to solve the problem of slipping caused by wear of the chain of the existing chain lifting door proposed in the above background technology, which causes the lifting door to fall and affects the safety of use. In addition, the existing anti-fall components cannot stop the lifting door from falling in the first time due to limitation and fixing problems.

[0004] The purpose and effect of the chain-type anti-fall lifting door of this utility model are achieved by the following specific technical means:

[0005] A chain-type anti-fall lifting door, wherein the chain-type anti-fall lifting door includes a fixed mounting frame; a driving motor is fixedly installed on the right rear side of the bottom of the fixed mounting frame, a rotating shaft is fixedly connected to the left side of the driving motor, and two rotating shafts are connected to the front side of the bottom of the fixed mounting frame. The guide gears fixedly connected at the left and right ends of the rotating shaft are both meshed with driving chains. The driving chain is an "L"-shaped closed ring. The lifting door plate is equidistantly connected to the bottom of the front side of the drive chain. A control rod is rotatably connected to the rear side of the bottom of the fixed mounting frame, and a gear speed meter is fixedly installed on the right side of the bottom of the fixed mounting frame.

[0006] Furthermore, two guide brackets are symmetrically installed on the front side of the bottom end face of the fixed mounting frame, and the front sides and bottom are both rotatably connected to a rotating shaft. A gear speed meter is fixedly installed on the rear side of the guide bracket on the right side of the bottom of the fixed mounting frame, and the gear speed meter is engaged with the drive chain.

[0007] Furthermore, four fixed connecting frames are fixedly installed in a rectangular array on the rear side of the bottom of the fixed mounting frame, and a driving motor is fixedly installed on the right side wall of the fixed connecting frame on the right side of the rearmost side of the bottom of the fixed mounting frame, and the driving chain is slidably connected in the opposite side walls of the two opposite fixed connecting frames on the left and right.

[0008] Furthermore, a control rod is rotatably connected to the two fixed connecting frames in the middle of the bottom of the fixed mounting frame, and the left and right ends of the control rod are fixedly connected to "Z"-shaped deflection shaft wheels, which are slidably connected to the inner groove of the fixed connecting frame, and the rightmost end of the control rod is fixedly connected to a control worm gear.

[0009] Furthermore, inner grooves are provided in the opposite side walls of the two fixed connecting frames in the middle of the bottom of the fixed mounting frame. An auxiliary shaft frame is fixedly installed on the top of the right side wall of the fixed connecting frame on the right side of the fixed mounting frame. A control motor is fixedly installed on the front end of the auxiliary shaft frame. The control worm connected to the rear end of the control motor is rotatably connected in the auxiliary shaft frame. The bottom of the control worm is meshed with the control worm wheel at the rightmost end of the control rod, and the control motor and the gear speed meter are electrically connected.

[0010] Furthermore, the inner grooves opened on the opposite side walls of the two fixed connecting frames in the middle of the bottom of the fixed mounting frame are slidably connected with anti-fall limit plates on the upper and lower sides, and the opposite side walls of the two anti-fall limit plates are fixedly installed with engaging tooth blocks, and the opposite side walls of the two anti-fall limit plates are connected with four tension springs in a trapezoidal distribution.

[0011] The utility model provides a chain-type anti-fall lifting door, which has the following beneficial effects:

[0012] 1. The sliding speed of the drive chain is detected by the rotation speed of the gear speed meter, so that when the drive chain slips, the electrical signal is transmitted to the control motor through the gear speed meter, and the control motor drives the control worm wheel to rotate through the control worm, thereby driving the control rod to rotate, realizing rapid rotation of the control rod, and the control worm and the control worm wheel of the control motor cooperate to drive the control rod to rotate, and the deflection shaft wheels at both ends of the control rod rotate clockwise, so that the two anti-fall limit plates are slid in opposite directions through the deflection shaft wheels, thereby engaging the engaging tooth blocks on the opposite side walls of the two anti-fall limit plates into the drive chain, fixing the drive chain to prevent the drive chain from sliding, and avoiding the lifting door panel from falling quickly, so as to improve the safety of the lifting door panel. After the control rod is reset, the two anti-fall limit plates are reset under the action of the tension spring.

[0013] 2. The rotating shaft is fixed by cooperating with the guide bracket at the frontmost side of the bottom of the fixed mounting frame and the fixed connecting frame at the rearmost side of the bottom of the fixed mounting frame, so that the guide gears at both ends of the rotating shaft control the drive chain to open and close the lifting door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model when viewed from the right front side;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from the right rear side;

[0016] Figure 3 This is a schematic diagram of the bottom structure of the fixed mounting frame of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-section structure of the fixed mounting frame of the utility model;

[0018] Figure 5 This is a schematic diagram of the control rod structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the bottom structure of the fixed mounting frame of the utility model when viewed from above.

[0020] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0021] 1. Fixed mounting frame; 101. Guide bracket; 102. Fixed connecting frame; 103. Auxiliary shaft frame; 104. Inner groove; 2. Drive motor; 3. Rotating shaft; 301. Guide gear; 4. Drive chain; 5. Lifting door panel; 6. Control lever; 601. Deflection shaft wheel; 602. Control worm gear; 7. Control motor; 701. Control worm; 8. Anti-fall limit plate; 801. Engaging tooth block; 9. Gear speed meter. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples.

[0023] Example 1:

[0024] As attached Figure 1 To the attached Figure 6 As shown:

[0025] The utility model provides a chain-type anti-fall lifting door, comprising: a fixed mounting frame 1; a driving motor 2 is fixedly installed on the right rear side of the bottom of the fixed mounting frame 1, a rotating shaft 3 is fixedly connected to the left side of the driving motor 2, and the front side of the bottom of the fixed mounting frame 1 is connected to two rotating shafts 3, and the guide gears 301 fixedly connected to the left and right ends of the rotating shaft 3 are meshed with driving chains 4, the driving chain 4 is an "L"-shaped closed ring, and the front bottom of the driving chain 4 is equidistantly connected to a lifting door plate 5, a control rod 6 is rotatably connected to the rear side of the bottom of the fixed mounting frame 1, a gear speed meter 9 is fixedly installed on the right side of the bottom of the fixed mounting frame 1, and the front side and bottom of the fixed mounting frame 1 are symmetrically installed with two guide brackets 101, and both the front sides and the bottom are rotatably connected to a Rotating shaft 3, a gear speed meter 9 is fixedly installed on the rear side of the guide bracket 101 on the right side of the bottom of the fixed mounting frame 1, and the gear speed meter 9 is meshed with the drive chain 4. Four fixed connecting frames 102 are fixedly installed in a rectangular array on the rear side of the bottom of the fixed mounting frame 1. A driving motor 2 is fixedly installed on the right side wall of the fixed connecting frame 102 on the right side of the rearmost side of the bottom of the fixed mounting frame 1. The drive chain 4 is slidably connected to the opposite side walls of the two fixed connecting frames 102 opposite to each other on the left and right. The specific function is to fix the rotating shaft 3 through the cooperation of the guide bracket 101 on the front side of the bottom of the fixed mounting frame 1 and the fixed connecting frame 102 on the rearmost side of the bottom of the fixed mounting frame 1, so that the guide gears 301 at both ends of the rotating shaft 3 control the drive chain 4 to open and close the lifting door panel 5.

[0026] Among them, inner grooves 104 are provided in the opposite side walls of the two fixed connecting frames 102 in the middle of the bottom of the fixed mounting frame 1. An auxiliary shaft frame 103 is fixedly installed on the top of the right side wall of the fixed connecting frame 102 on the right side of the fixed mounting frame 1. The front end of the auxiliary shaft frame 103 is fixedly installed with a control motor 7. The control worm 701 connected to the rear end of the control motor 7 is rotatably connected in the auxiliary shaft frame 103. The bottom of the control worm 701 is meshed with the control worm wheel 602 at the rightmost end of the control rod 6. The control motor 7 and the gear speed meter 9 are electrically connected. The specific function is to detect the sliding speed of the drive chain 4 through the rotation speed of the gear speed meter 9, so that when the drive chain 4 slips, the gear speed meter 9 transmits the electrical signal to the control motor 7, and the control motor 7 drives the control worm wheel 602 to rotate through the control worm 701, thereby driving the control rod 6 to rotate, realizing rapid rotation of the control rod 6.

[0027] Among them, the two fixed connecting frames 102 in the middle of the bottom of the fixed mounting frame 1 are rotatably connected with the control rod 6, and the left and right ends of the control rod 6 are fixedly connected with the "Z"-shaped deflection shaft wheel 601, and the deflection shaft wheel 601 is slidably connected to the inner groove 104 of the fixed connecting frame 102. The rightmost end of the control rod 6 is fixedly connected with the control worm gear 602, and the inner groove 104 opened on the opposite side walls of the two fixed connecting frames 102 in the middle of the bottom of the fixed mounting frame 1 is slidably connected with the anti-fall limit plate 8 on the upper and lower sides. The opposite side walls of the two anti-fall limit plates 8 are fixedly installed with the engaging tooth blocks 801, and the opposite side walls of the two anti-fall limit plates 8 are trapezoidally divided. The cloth is connected with four tension springs, and its specific function is to drive the control rod 6 to rotate by cooperating with the control worm 701 and the control worm wheel 602 of the control motor 7, and the deflection shaft wheels 601 at both ends of the control rod 6 rotate clockwise, so that the two anti-fall limit plates 8 can be slid in opposite directions through the deflection shaft wheels 601, thereby engaging the engaging tooth blocks 801 on the opposite side walls of the two anti-fall limit plates 8 into the drive chain 4, fixing the drive chain 4 to prevent the drive chain 4 from sliding, avoiding the lifting door panel 5 from falling quickly, so as to improve the safety of the lifting door panel 5, and after the control rod 6 is reset, the two anti-fall limit plates 8 are reset under the action of the tension spring.

[0028] The specific usage and function of this embodiment are as follows:

[0029] When the chain-type anti-fall lifting door is used, the rotating shaft 3 is fixed by the guide bracket 101 at the frontmost side of the bottom of the fixed mounting frame 1 and the fixed connecting frame 102 at the rearmost side of the bottom of the fixed mounting frame 1, so that the guide gears 301 at both ends of the rotating shaft 3 control the driving chain 4 to open and close the lifting door panel 5, and the sliding speed of the driving chain 4 is detected by the rotation speed of the gear speed meter 9, so that when the driving chain 4 slips, the gear speed meter 9 transmits an electrical signal to the control motor 7, and the control motor 7 drives the control worm wheel 602 to rotate through the control worm 701, thereby driving the control rod 6 to rotate, realizing the control The rapid rotation of the control rod 6 drives the control rod 6 to rotate through the control worm 701 and the control worm wheel 602 of the control motor 7, and the deflection shaft wheels 601 at both ends of the control rod 6 rotate clockwise, so that the two anti-fall limit plates 8 can be slid in opposite directions through the deflection shaft wheels 601, thereby engaging the engaging tooth blocks 801 on the opposite side walls of the two anti-fall limit plates 8 into the drive chain 4, fixing the drive chain 4 to prevent the drive chain 4 from sliding, avoiding the lifting door panel 5 from falling quickly, so as to improve the safety of the lifting door panel 5. After the control rod 6 is reset, the two anti-fall limit plates 8 are reset under the action of the tension spring.

[0030] Example 2:

[0031] By connecting the gear speed detector 9 at multiple positions of the drive chain 4 , the detection accuracy of the gear speed detector 9 can be further improved, thereby increasing the control effect on the control motor 7 .

Claims

1. A chain-type anti-fall lifting door, characterized by: The invention comprises a fixed mounting frame (1); a driving motor (2) is fixedly mounted on the right rear side of the bottom of the fixed mounting frame (1); a rotating shaft (3) is fixedly connected to the left side of the driving motor (2); two rotating shafts (3) are connected to the front side of the bottom of the fixed mounting frame (1); a driving chain (4) is meshed and connected to the guide gears (301) fixedly connected to the left and right ends of the rotating shafts (3); the driving chain (4) is an "L"-shaped closed ring; a lifting door panel (5) is equidistantly connected to the bottom of the front side of the driving chain (4); a control rod (6) is rotatably connected to the rear side of the bottom of the fixed mounting frame (1); and a gear speed meter (9) is fixedly mounted on the right side of the bottom of the fixed mounting frame (1).

2. The chain-type anti-fall lifting door according to claim 1, characterized in that: Two guide brackets (101) are symmetrically mounted on the front side of the bottom end face of the fixed mounting frame (1), and the front sides and bottom sides of the two guide brackets (101) are both rotatably connected to a rotating shaft (3). A gear speed meter (9) is fixedly mounted on the rear side of the guide bracket (101) on the right side of the bottom of the fixed mounting frame (1), and the gear speed meter (9) is meshedly connected to the drive chain (4).

3. The chain-type anti-fall lifting door according to claim 1, characterized in that: Four fixed connecting frames (102) are fixedly mounted in a rectangular array on the rear side of the bottom of the fixed mounting frame (1); a driving motor (2) is fixedly mounted on the right side wall of the fixed connecting frame (102) on the right rearmost side of the bottom of the fixed mounting frame (1); and a driving chain (4) is slidably connected to the opposite side walls of the two opposite fixed connecting frames (102) on the left and right.

4. The chain-type anti-fall lifting door according to claim 1, characterized in that: A control rod (6) is rotatably connected to two fixed connecting frames (102) at the middle of the bottom of the fixed mounting frame (1); the left and right ends of the control rod (6) are fixedly connected to "Z"-shaped deflection shaft wheels (601); the deflection shaft wheels (601) are slidably connected to the inner grooves (104) of the fixed connecting frames (102); and the rightmost end of the control rod (6) is fixedly connected to a control worm gear (602).

5. The chain-type anti-fall lifting door according to claim 1, characterized in that: An inner groove (104) is provided in the opposite side walls of the two fixed connecting frames (102) at the middle of the bottom of the fixed mounting frame (1). An auxiliary shaft frame (103) is fixedly installed on the top of the right side wall of the fixed connecting frame (102) on the right side of the fixed mounting frame (1). A control motor (7) is fixedly installed on the front end of the auxiliary shaft frame (103). A control worm (701) connected to the rear end of the control motor (7) is rotatably connected to the auxiliary shaft frame (103). The bottom of the control worm (701) is meshed with the control worm wheel (602) at the rightmost end of the control rod (6). The control motor (7) is electrically connected to the gear speed meter (9).

6. The chain-type anti-fall lifting door according to claim 1, characterized in that: The inner grooves (104) opened on the opposite side walls of the two fixed connecting frames (102) at the middle of the bottom of the fixed mounting frame (1) are slidably connected with anti-falling limit plates (8) on the upper and lower sides, and the opposite side walls of the two anti-falling limit plates (8) are fixedly installed with engaging tooth blocks (801), and the opposite side walls of the two anti-falling limit plates (8) are connected with four tension springs distributed in a trapezoidal shape.

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