High-safety escalator

Abstract

The utility model discloses a high-safety escalator. The high-safety escalator comprises a shell, an escalator assembly and a tensioning adjusting mechanism. The front side of the top end of the shell is fixedly connected with an operation box, and the front and rear ends of the upper surface of the shell are fixedly connected with handrails; the elevator assembly comprises steps, annular rails, fixing shafts, pulleys and fixing frames, the fixing frames are fixedly connected to the front inner wall and the rear inner wall of the shell correspondingly, the annular rails are arranged on the inner side faces of the two fixing frames correspondingly, the pulleys which are evenly distributed are slidably connected to the inner walls of the annular rails correspondingly, and the opposite inner side ends of the pulleys are rotationally connected with the fixing shafts correspondingly; according to the high-safety escalator, tensioning can be adaptively adjusted, good contact between the synchronous belt and the belt pulley can be ensured, it can be ensured that sliding or jumping does not occur in the power transmission process, the escalator runs more smoothly, and the safety index of running of the escalator is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a high-safety escalator. Background Art

[0002] The escalator is composed of a chain conveyor with a special structure and two belt conveyors with a special structure. It is a fixed electric drive device with a circular motion ladder for transporting passengers up or down between different floors of a building. A continuous conveying machine for carrying people up and down. Safety is the most concerned part of most people in the past. Traditional escalators tell the safe distance of the load-bearing personnel by painting markings, and the drive unit uses a synchronous belt or chain for transmission. Adjusting the tension of the synchronous belt or chain can prevent the synchronous belt or chain from falling off during the operation of the escalator to improve safety. Traditional escalators use external equipment to adjust the tension, which has some problems. Traditional escalators only use a single marking line to tell the load-bearing personnel the safe distance. It may not be able to clearly and accurately convey the concept of safe distance and cannot control the installation range from the inside. At the same time, it is more troublesome to adjust the tension of the synchronous belt or chain. It is not possible to adapt to the adjustment quickly. It is easy to fall off when the synchronous belt is loose and cannot be adjusted in time. For this reason, we propose a high-safety escalator. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a high-safety escalator that can adaptively adjust the tension to ensure good contact between the synchronous belt and the pulley, and can ensure that there is no slipping or jumping during the power transmission process, so that the elevator runs more smoothly, improves the safety index of the elevator operation, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-safety escalator, comprising a housing, an elevator assembly and a tensioning adjustment mechanism;

[0005] Shell: The front side of the top is fixedly connected with an operation box, and the front and rear ends of the upper surface of the shell are respectively fixedly connected with handrails;

[0006] Elevator assembly: It includes a ladder, an annular track, a fixed shaft, a pulley and a fixed frame, wherein the fixed frames are respectively fixedly connected to the front and rear inner walls of the shell, the inner sides of the two fixed frames are provided with an annular track, the inner walls of the annular track are slidably connected with evenly distributed pulleys, the opposite inner ends of the pulleys are rotatably connected with the fixed shaft, and a ladder is fixedly connected between every two longitudinally adjacent fixed shafts;

[0007] Tensioning adjustment mechanism: It is arranged on the bottom wall of the operating box, and the bottom end of the tensioning adjustment mechanism extends to the inside of the outer shell. The tensioning adjustment mechanism is installed in conjunction with the elevator assembly, and can adaptively adjust the tension to ensure good contact between the synchronous belt and the pulley, and can ensure that there is no slippage or jumping during the power transmission process, so that the elevator runs more smoothly and improves the safety index of the elevator operation.

[0008] Furthermore, it also includes a single-chip microcomputer, which is arranged on the left side of the bottom wall of the operation box, and the output end of the single-chip microcomputer is electrically connected to an external power supply to facilitate the regulation of electrical operation.

[0009] Furthermore, it also includes reflective stickers, which are all set on the upper surface of the stairs to provide a suitable standing distance for the load-bearing personnel and remind the load-bearing personnel to maintain a safe distance at all times.

[0010] The elevator assembly also includes a rotating shaft, a chain and a large-diameter sprocket. The rotating shaft is rotatably connected between the front and rear inner walls of the right end of the outer shell. The front and rear outer surfaces of the rotating shaft are respectively fixed with large-diameter sprockets. The chains are slidably connected to the outer surface of the fixed frame. The right ends of the chains are meshed with the outer surfaces of the large-diameter sprockets. The inner sides of the two chains are rotatably connected to the opposite outer sides of each step through pins to transmit transmission and drive the steps to move.

[0011] Furthermore, the elevator assembly also includes a synchronous belt, a synchronous pulley 1, a synchronous pulley 2 and a motor. The motor is fixedly connected to the right inner wall of the shell, and the front end of the output shaft of the motor is fixedly sleeved with a synchronous pulley 2. The synchronous pulley 1 is fixedly sleeved on the front end of the rotating shaft. The synchronous pulley 1 and the synchronous pulley 2 are connected through a synchronous belt transmission. The input end of the motor is electrically connected to the output end of the single-chip microcomputer to facilitate driving the elevator to operate.

[0012] Furthermore, the tensioning adjustment mechanism includes a knob, a screw, a limit column, a mounting column and a roller. The screw is threadedly connected to the bottom wall of the operating box, the bottom end of the screw extends to the interior of the outer shell, the bottom end of the screw is rotatably connected to the mounting column, a rotation groove is provided at the bottom end of the mounting column, the interior of the rotation groove is rotatably connected to the roller through a pin shaft, the outer arc surface of the roller is mounted in cooperation with the outer surface of the synchronous belt, the upper surface of the mounting column is fixedly connected to the limit column, the upper end of the limit column is slidably connected to the top wall of the outer shell, the top end of the limit column extends to the interior of the operating box, and the top end of the screw is fixedly connected to the knob, which can ensure good contact between the synchronous belt and the synchronous pulley, and can ensure that there is no slipping or jumping during the power transmission process.

[0013] Furthermore, it also includes an emergency button, which is arranged at the right end of the front side of the operation box. The output end of the emergency button is electrically connected to the input end of the single-chip microcomputer to provide protection measures for emergency situations.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the high-safety escalator has the following advantages:

[0015] 1. When a pedestrian stands on the stairs, the motor is regulated by the single chip microcomputer. The output shaft of the motor drives the synchronous pulley 2 to rotate. The synchronous pulley 2 is connected to the synchronous pulley 1 through the synchronous belt transmission, thereby driving the rotating shaft to rotate. The rotating shaft drives the large diameter sprocket. The large diameter sprocket rotates by meshing with the chain and drives the chain to rotate and slide on the outer surface of the fixed frame, thereby driving the stairs to move parallel. The stairs roll according to the shape of the circular track through the outer pulley, which is convenient for maintaining the horizontal state of the stairs and providing a more comfortable scene for the load-bearing personnel. When the stairs run to the bottom, they are turned over by the pulley according to the shape of the circular track. When they run to the highest point, they are turned over by the pulley according to the shape of the circular track through the pin shaft on both sides of the chain. When they run to the smooth place, they are turned over by the pin shaft on both sides of the chain according to the shape of the circular track. The reflective stickers will produce obvious reflection effects under light, which improves visibility at night or in low light environments. At the same time, it provides a suitable standing distance for the load-bearing personnel, reminding the load-bearing personnel to keep a safe distance at all times.

[0016] 2. When it is detected that the synchronous belt is relatively loose, the staff twists the knob, and the knob drives the screw to rotate. The screw is connected to the bottom wall of the operating box through the thread, and then drives the roller to move downward until it contacts the outer surface of the synchronous belt to squeeze and adjust the appropriate tension. At the same time, it is slidably connected to the top wall of the shell through the limit column to limit the roller, preventing the roller from relative rotation during rotation, so as to better adjust the tension. The adaptive adjustment of the tension can ensure good contact between the synchronous belt and the synchronous pulley 1 and the synchronous pulley 2, and can ensure that there is no slippage or jumping during the power transmission process, so that the elevator runs more smoothly, improves the safety index of the elevator operation, and can reduce the risk of passengers suffering from accidental injuries or accidents caused by the falling of the synchronous belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in cross section;

[0019] Figure 3 It is a partial structural schematic diagram of the elevator assembly of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the utility model enlarged at A;

[0021] Figure 5 It is a schematic diagram of the structure enlarged at B of the utility model.

[0022] In the figure: 1 housing, 2 emergency button, 3 operation box, 4 handrail, 5 reflective tape, 6 single-chip microcomputer, 7 tension adjustment mechanism, 71 knob, 72 screw, 73 limit column, 74 mounting column, 75 roller, 8 elevator assembly, 801 synchronous belt, 802 rotating shaft, 803 synchronous pulley 1, 804 large diameter sprocket, 805 step, 806 chain, 807 ring track, 808 fixed shaft, 809 pulley, 810 fixed frame, 811 synchronous pulley 2, 812 motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 ,This embodiment provides a technical solution: a high-safety escalator, comprising a housing 1, an elevator assembly 8 and a tensioning adjustment mechanism 7;

[0025] Shell 1: The front side of the top thereof is fixedly connected with an operation box 3, and the front and rear ends of the upper surface of the shell 1 are respectively fixedly connected with handrails 4. It also includes a single-chip microcomputer 6, which is arranged on the left side of the bottom wall of the operation box 3, and the output end of the single-chip microcomputer 6 is electrically connected to an external power supply. It also includes reflective stickers 5, which are all arranged on the upper surface of the step 805. The reflective stickers 5 will produce obvious reflection effects under light irradiation, thereby improving visibility at night or in low-light environments, and at the same time providing a suitable standing distance for the load-bearing personnel, reminding the load-bearing personnel to keep a safe distance at all times. It also includes an emergency button 2, which is arranged on the right end of the front side of the operation box 3, and the output end of the emergency button 2 is electrically connected to the input end of the single-chip microcomputer 6. When encountering an emergency, the personnel press the emergency button 2, and the emergency button 2 gives instructions to the single-chip microcomputer 6 to control the overall operation;

[0026] Elevator assembly 8: It includes a step 805, an annular track 807, a fixed shaft 808, a pulley 809 and a fixed frame 810. The fixed frame 810 is fixedly connected to the front and rear inner walls of the housing 1 respectively. The inner sides of the two fixed frames 810 are provided with an annular track 807. The inner walls of the annular track 807 are slidably connected with evenly distributed pulleys 809. The opposite inner ends of the pulleys 809 are rotatably connected with the fixed shaft 808. A step 805 is fixedly connected between every two longitudinally adjacent fixed shafts 808. The elevator assembly 8 also includes a rotating shaft 802, a chain 806 and a large-diameter sprocket 804. The rotating shaft 802 rotates Connected between the front and rear inner walls of the right end of the shell 1, the outer surfaces of the front and rear ends of the rotating shaft 802 are respectively fixedly sleeved with large-diameter sprockets 804, and the chains 806 are slidably connected to the outer surface of the fixed frame 810. The right ends of the chains 806 are meshed with the outer surface of the large-diameter sprocket 804. The inner sides of the two chains 806 are rotatably connected to the opposite outer sides of each step 805 through the pin shaft. The elevator assembly 8 also includes a synchronous belt 801, a synchronous pulley 1 803, a synchronous pulley 2 811 and a motor 812. The motor 812 is fixedly connected to the right inner wall of the shell 1, and the front end of the output shaft of the motor 812 is fixedly sleeved with a synchronous belt The synchronous pulley 803 is fixedly sleeved on the front end of the rotating shaft 802, and the synchronous pulley 803 and the synchronous pulley 811 are connected by the synchronous belt 801. The input end of the motor 812 is electrically connected to the output end of the single-chip computer 6. When a pedestrian stands on the ladder 805, the single-chip computer 6 controls the operation of the motor 812, and the output shaft of the motor 812 drives the synchronous pulley 811 to rotate. The synchronous pulley 811 is connected to the synchronous pulley 803 through the synchronous belt 801, and then drives the rotating shaft 802 to rotate. The rotating shaft 802 drives the large-diameter sprocket 804, and the large-diameter sprocket 804 is connected to the chain 801. The meshing rotation of 06 drives the chain 806 to rotate and slide on the outer surface of the fixed frame 810, thereby driving the step 805 to move in parallel. The step 805 rolls according to the shape of the circular track 807 through the outer pulley 809, which is convenient for maintaining the horizontal state of the step 805 and providing a more comfortable scene for the load-bearing personnel. When the step 805 runs to the bottom, it turns over according to the shape of the circular track 807 through the pulley 809. When it runs to the highest point, it circulates and turns over according to the shape of the circular track 807 through the pulley 809. When it runs to a smooth place, it rolls according to the shape of the circular track 807.

[0027] Tensioning adjustment mechanism 7: It is arranged on the bottom wall of the operating box 3, and the bottom end of the tensioning adjustment mechanism 7 extends to the inside of the shell 1. The tensioning adjustment mechanism 7 is installed in cooperation with the elevator component 8. The tensioning adjustment mechanism 7 includes a knob 71, a screw 72, a limit column 73, a mounting column 74 and a roller 75. The screw 72 is threadedly connected to the bottom wall of the operating box 3, and the bottom end of the screw 72 extends to the inside of the shell 1. The bottom end of the screw 72 is rotatably connected with the mounting column 74. A rotating groove is provided at the bottom end of the mounting column 74. The inside of the rotating groove is rotatably connected with a roller 75 through a pin shaft. The outer arc surface of the roller 75 is installed in cooperation with the outer surface of the synchronous belt 801. The upper surface of the mounting column 74 is fixedly connected to the limit column 73. The upper end of the limit column 73 is slidably connected to the top wall of the shell 1. The top end of the limit column 73 extends to the inside of the operating box 3. The top end of the screw 72 is fixedly connected with the knob 71 When it is detected that the synchronous belt 801 is relatively loose, the staff twists the knob 71, and the knob 71 drives the screw 72 to rotate. The screw 72 is connected to the bottom wall of the operating box 3 through the thread, thereby driving the roller 75 to move downward until it contacts the outer surface of the synchronous belt 801 for squeezing and adjusting the appropriate tension. At the same time, the limiting column 73 is slidably connected to the top wall of the shell 1 to limit the roller 75, preventing the roller 75 from rotating relative to each other during rotation, so as to better adjust the tension. The tension can be adaptively adjusted to ensure good contact between the synchronous belt 801 and the synchronous pulley 1 803 and the synchronous pulley 2 811, and can ensure that there is no slippage or jumping during the power transmission process, so that the elevator runs more smoothly, improves the safety index of the elevator operation, and reduces the risk of passengers suffering from accidental injuries or accidents caused by the falling off of the synchronous belt 801.

[0028] The working principle of the high-safety escalator provided by the utility model is as follows: when a pedestrian stands on the ladder 805, the motor 812 is controlled by the single-chip microcomputer 6 to operate, and the output shaft of the motor 812 drives the synchronous pulley 811 to rotate, and the synchronous pulley 811 is connected to the synchronous pulley 803 through the synchronous belt 801, thereby driving the rotating shaft 802 to rotate, and the rotating shaft 802 drives the large-diameter sprocket 804, and the large-diameter sprocket 804 rotates by meshing with the chain 806, thereby driving the chain 806 to rotate and slide on the outer surface of the fixed frame 810, thereby driving The step 805 moves in parallel, and the step 805 rolls according to the shape of the circular track 807 through the outer pulley 809, so as to keep the step 805 in a horizontal state, providing a more comfortable scene for the load-bearing personnel. When the step 805 moves to the bottom, the pulley 809 rotates on both sides of the chain 806 according to the shape of the circular track 807 through the pin shaft, and turns over when it runs to the highest point. The pulley 809 rotates on both sides of the chain 806 according to the shape of the circular track 807 through the pin shaft, and turns over when it runs to a smooth place. The roller 75 is connected to the bottom wall of the operating box 3 by the threaded connection, and then drives the roller 75 to move downward until it contacts the outer surface of the synchronous belt 801 to squeeze and adjust the synchronous belt 801 appropriately. The tension is achieved by sliding the limit column 73 to the top wall of the shell 1 to limit the roller 75, preventing the roller 75 from rotating relative to each other during rotation, so as to better adjust the tension. The tension can be adaptively adjusted to ensure good contact between the synchronous belt 801 and the synchronous pulley 1 803 and the synchronous pulley 2 811, and can ensure that there is no slippage or jumping during the power transmission process, so that the elevator runs more smoothly, improves the safety index of the elevator operation, and can reduce the risk of passengers suffering from accidental injuries or accidents caused by the falling off of the synchronous belt 801.

[0029] It is worth noting that the specific model of the single chip microcomputer 6 disclosed in the above embodiment is S7-200, and the motor 812 can be YEJ20.55KW-4P. The single chip microcomputer 6 controls the operation of the motor 812 using methods commonly used in the prior art.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-safety escalator, characterized in that: It comprises a housing (1), an elevator assembly (8) and a tensioning adjustment mechanism (7); The housing (1) has an operation box (3) fixedly connected to the front side of the top thereof, and handrails (4) fixedly connected to the front and rear ends of the upper surface of the housing (1); An elevator assembly (8): comprising a step (805), an annular track (807), a fixed shaft (808), a pulley (809) and a fixed frame (810), wherein the fixed frames (810) are respectively fixedly connected to the front and rear inner walls of the outer shell (1), the inner sides of the two fixed frames (810) are each provided with an annular track (807), the inner walls of the annular track (807) are each slidably connected to evenly distributed pulleys (809), the opposite inner ends of the pulleys (809) are rotatably connected to the fixed shaft (808), and a step (805) is fixedly connected between every two longitudinally adjacent fixed shafts (808); The tensioning adjustment mechanism (7) is arranged on the bottom wall of the operating box (3), the bottom end of the tensioning adjustment mechanism (7) extends to the inside of the outer shell (1), and the tensioning adjustment mechanism (7) is installed in coordination with the elevator assembly (8).

2. A high-safety escalator according to claim 1, characterized in that: It also includes a single chip microcomputer (6), which is arranged on the left side of the bottom wall of the operation box (3), and the output end of the single chip microcomputer (6) is electrically connected to an external power supply.

3. A high-safety escalator according to claim 1, characterized in that: It also includes reflective stickers (5), and the reflective stickers (5) are all arranged on the upper surface of the steps (805).

4. A high-safety escalator according to claim 2, characterized in that: The elevator assembly (8) further comprises a rotating shaft (802), a chain (806) and a large-diameter sprocket (804); the rotating shaft (802) is rotatably connected between the front and rear inner walls of the right end of the outer shell (1); the large-diameter sprocket (804) is fixedly sleeved on the outer surfaces of the front and rear ends of the rotating shaft (802); the chains (806) are slidably connected to the outer surface of the fixing frame (810); the right ends of the chains (806) are meshedly connected to the outer surface of the large-diameter sprocket (804); the inner side surfaces of the two chains (806) are rotatably connected to the opposite outer side surfaces of each step (805) through a pin shaft.

5. A high-safety escalator according to claim 4, characterized in that: The elevator assembly (8) further comprises a synchronous belt (801), a synchronous pulley 1 (803), a synchronous pulley 2 (811) and a motor (812); the motor (812) is fixedly connected to the right inner wall of the housing (1); the front end of the output shaft of the motor (812) is fixedly sleeved with the synchronous pulley 2 (811); the synchronous pulley 1 (803) is fixedly sleeved on the front end of the rotating shaft (802); the synchronous pulley 1 (803) and the synchronous pulley 2 (811) are connected by a synchronous belt (801); and the input end of the motor (812) is electrically connected to the output end of the single-chip computer (6).

6. A high-safety escalator according to claim 5, characterized in that: The tension adjustment mechanism (7) comprises a knob (71), a screw (72), a limiting column (73), a mounting column (74) and a roller (75); the screw (72) is threadedly connected to the bottom wall of the operating box (3); the bottom end of the screw (72) extends to the inside of the housing (1); the bottom end of the screw (72) is rotatably connected to the mounting column (74); a rotating groove is provided at the bottom end of the mounting column (74); the inside of the rotating groove is rotatably connected to the roller (75) via a pin; the outer arc surface of the roller (75) is mounted in cooperation with the outer surface of the synchronous belt (801); the upper surface of the mounting column (74) is fixedly connected to the limiting column (73); the upper end of the limiting column (73) is slidably connected to the top wall of the housing (1); the top end of the limiting column (73) extends to the inside of the operating box (3); and the top end of the screw (72) is fixedly connected to the knob (71).

7. A high-safety escalator according to claim 2, characterized in that: It also includes an emergency button (2), which is arranged at the right end of the front side of the operation box (3), and the output end of the emergency button (2) is electrically connected to the input end of the single-chip computer (6).

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