Article falling protection device for elevator

Abstract

The article falling protection device comprises a base, side plates are installed on the two sides of the upper surface of the base, a lifting mechanism is arranged between every two side plates, an anti-falling mechanism is arranged below the lifting mechanism, a first inclined clamping plate is installed on the outer wall of one side of each side plate, and a second inclined clamping plate is installed on the outer wall of the other side of each side plate. The anti-falling mechanism is formed by combining a buffer assembly, moving plates, a second sliding rail, a columnar gear, a second gear motor and a rack, the columnar gear is installed on an output shaft of the second gear motor, the moving plates are arranged above and below the columnar gear, the rack is installed on the surface of one side of each moving plate, and the second sliding rail is installed on the rack. And a buffer assembly is mounted on the outer wall of one side of the moving plate. According to the lifting platform, the situation that the lifting platform falls can be effectively prevented, the impact resistance of the lifting platform in the falling process is enhanced, the situation that the lifting platform is broken due to impact force generated in the falling process of the lifting platform is avoided, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of elevators, in particular to an article falling protection device for elevators. BACKGROUND

[0002] The elevator, lifting operation platform is a kind of multifunctional lifting mechanical equipment, can be divided into fixed and mobile, guide rail type, curved arm type, scissor type, chain type, loading and unloading platform etc., elevator is usually used for rescue, decoration, conveying goods etc.

[0003] Through the retrieval, patent announcement No. CN215207923U a construction elevator anti-falling device, solve the construction elevator poor safety, no effective anti-falling device's shortcomings, including stand, the stand one side inside welding has the clamping plate, stand inside clamping has the lifting box, the lifting box bottom two sides are equipped with speedometer, lifting box bottom welding has motor base, the motor base lower surface bolt connection has motor, the motor output end clamping has gear, lifting box bottom welding has first clamping plate and second clamping plate, the first clamping plate and the second clamping plate inside clamping has the toothed plate, this engineering elevator anti-falling device simple structure, easy to install, and can effectively prevent the elevator from falling, when elevator falls accidentally, can quickly activate motor, makes car in time clamping, protects life and property safety.

[0004] And the existing article falling protection device for elevators when actually using, the lifting platform will cause certain impact force between the lifting equipment in the process of falling and stopping falling, when the impact force between the lifting platform and the lifting equipment is too large, not only will cause the lifting platform to break, but also will cause the lifting equipment to be damaged, therefore, design a kind to be used for article falling protection device for elevators. UTILITY MODEL CONTENTS

[0005] In view of the defects or deficiencies of the elevator, the utility model aims at providing an article falling protection device for elevators, which can effectively prevent the falling of the lifting platform, and enhance the impact resistance of the lifting platform during falling, avoid the impact force caused by the falling of the lifting platform, and improve the safety.

[0006] To achieve the above utility model purposes, the utility model adopts the following technical solutions:

[0007] The article falling protection device for elevators includes a base, the upper surface of the base is provided with side plates on both sides, the side plates are provided with lifting mechanisms between each other, and the lifting mechanisms are provided with anti-falling mechanisms below, a first inclined clamping plate is installed on the outer wall of one side of the side plate;

[0008] The anti-falling mechanism is composed of a buffer assembly, a moving plate, a second sliding rail, a cylindrical gear, a second speed reducer and a rack, a cylindrical gear is installed on the output shaft of the second speed reducer, moving plates are arranged above and below the cylindrical gear, a rack is installed on one side surface of the moving plate, the cylindrical gear is in meshing connection with the racks on the two moving plates, a buffer assembly is installed on one side outer wall of the moving plate.

[0009] A first speed reducer is arranged on the lifting mechanism, the output shaft of the first speed reducer penetrates the surface of the support frame and is connected with the rotating shaft through a shaft coupling, the bottom end of the rotating shaft penetrates the threaded hole of the moving block and the bearing on the surface of the support frame in sequence and is installed in the bearing seat, the moving block is arranged at the center position of the rear end wall of the lifting platform, and speed detection sensors are installed on both sides of the front end of the lower surface of the lifting platform.

[0010] Preferably, the first speed reducer is installed at the top end of the support frame, the bottom end of the support frame is installed at the rear end of the upper surface of the base, the bearing seat is installed at the rear end of the upper surface of the base, the second speed reducer is installed on the L-shaped support plate, and the L-shaped support plate is installed at the rear end of the lower surface of the lifting platform, and a control box is installed on the rear end wall of the support frame.

[0011] Preferably, an external thread is arranged on the outer wall of the rotating shaft, and the external thread on the outer wall of the rotating shaft is in threaded engagement connection with the threaded hole on the moving block.

[0012] Preferably, first sliding blocks are installed at the front and rear ends of the outer walls on both sides of the lifting platform, the other ends of the first sliding blocks are installed on the first sliding rails, the first sliding blocks and the first sliding rails are in sliding connection, and the first sliding rails are installed at the front and rear ends of the outer walls on one side of the first side plate.

[0013] Preferably, the lower surface of the lifting platform is connected with second sliding blocks through L-shaped connecting rods at the front and rear ends, the other ends of the second sliding blocks are installed on the second sliding rails, the second sliding blocks and the second sliding rails are in sliding connection, and the second sliding rails are installed on the front and rear end walls of the moving plate.

[0014] Preferably, an installation plate is arranged on the buffer assembly, an installation groove is formed at the bottom end center position of the installation plate, a damping cylinder is connected with a buffer plate at the inner top end of the installation groove, and a spring is sleeved on the outer wall of the damping cylinder.

[0015] Preferably, limit blocks are installed on the outer walls on both sides of the buffer plate, the other ends of the limit blocks are installed in limit grooves, the outer walls of the limit blocks and the groove walls of the limit grooves are in clearance fit, the limit grooves are formed on the groove walls on both sides of the installation groove, the outer wall of the buffer plate and the groove wall of the installation groove are in clearance fit, the lower surface of the buffer plate is connected with a second inclined clamping plate through a connecting plate, and the second inclined clamping plate is located below the installation plate.

[0016] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0017] 1、In the utility model, when the lifting platform falls during the lifting and transporting process of the goods, the speed detection sensor can detect the speed of the lifting platform in real time, when the speed data value detected by the speed detection sensor is greater than the preset speed data value, the single-chip microcomputer in the control box controls the second speed reducer to start, the starting of the second speed reducer drives the cylindrical gear to rotate, the rotation of the cylindrical gear meshes with the gear rack on the moving plate to drive the two moving plates to move in opposite directions, and the buffer assemblies on the two moving plates are respectively clamped into the first inclined clamping plates on the two side plates, thereby blocking the further falling of the lifting platform, effectively preventing the falling of the lifting platform, and improving the safety.

[0018] 2、In the utility model, when the buffer assembly is clamped into the first inclined clamping plate, and the second inclined clamping plate and the first inclined clamping plate are in contact and generate an impact force, the cooperation of the spring, the damping cylinder and the buffer plate can play a buffering role, thereby reducing the acting force between the second inclined clamping plate and the first inclined clamping plate, the utility model enhances the impact resistance of the lifting platform during falling, avoids the impact force caused by the falling of the lifting platform, and further improves the safety. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings constituting a part of the specification of the utility model are used to provide further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute undue limitation on the utility model.

[0020] Figure 1 is a three-dimensional structure schematic of the utility model Figure 1 .

[0021] Figure 2 is a three-dimensional structure schematic of the utility model Figure 2 .

[0022] Figure 3 is a split structure schematic of the anti-falling mechanism of the utility model Figure 1 .

[0023] Figure 4 is a split structure schematic of the anti-falling mechanism of the utility model Figure 2 .

[0024] Figure 5 is a sectional view of the buffer assembly of the utility model.

[0025] Figure 6 is a structural schematic view of the lifting mechanism of the utility model.

[0026] Figure 7 is a structural schematic view of the lifting platform of the utility model.

[0027] Figure 8 is a structural schematic view of the side plate of the utility model.

[0028] In the drawings:

[0029] 100, lifting mechanism; 110, first speed reducer motor; 120, support frame; 130, rotating shaft; 140, lifting platform; 150, bearing seat;

[0030] 141, moving block; 142, first sliding block; 143, speed detection sensor; 144, L-shaped connecting rod; 145, second sliding block; 146, L-shaped support plate;

[0031] 200, anti-falling mechanism; 210, buffer assembly; 220, moving plate; 230, second sliding rail; 240, cylindrical gear; 250, second speed reducer motor; 260, rack;

[0032] 211, damping cylinder; 212, spring; 213, limiting groove; 214, limiting block; 215, mounting groove; 216, connecting plate; 217, buffer plate; 218, second inclined clamping plate; 219, mounting plate;

[0033] 300, side plate; 310, first sliding rail; 320, first inclined clamping plate;

[0034] 400, base;

[0035] 500, control box. DETAILED DESCRIPTION

[0036] The utility model will be further described below in combination with the drawings and examples.

[0037] It should be noted that the following detailed description is exemplary and is intended to provide further description of the utility model. Unless otherwise specified, all technical and scientific terms used in this paper have the same meaning as that generally understood by ordinary skilled persons in the technical field to which the utility model belongs.

[0038] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0039] As shown in Figures 1-8 An elevator article falling protection device, comprising a base 400, the upper surface of the base 400 is provided with side plates 300 on both sides, the side plates 300 are provided with lifting mechanisms 100 between each other, and the falling protection mechanism 200 is arranged below the lifting mechanism 100, and a first inclined clamping plate 320 is arranged on one side of the outer wall of the side plate 300.

[0040] The falling protection mechanism 200 is composed of a buffer assembly 210, a moving plate 220, a second sliding rail 230, a cylindrical gear 240, a second speed reducer motor 250 and a rack 260, the cylindrical gear 240 is arranged on the output shaft of the second speed reducer motor 250, the moving plate 220 is arranged above and below the cylindrical gear 240, the rack 260 is arranged on one side surface of the moving plate 220, the cylindrical gear 240 and the racks 260 on the two moving plates 220 are in meshing connection, and the buffer assembly 210 is arranged on one side of the outer wall of the moving plate 220.

[0041] The lifting mechanism 100 is provided with a first speed reducer motor 110, the output shaft of the first speed reducer motor 110 penetrates the surface of the support frame 120 and is connected with the rotating shaft 130 through a shaft coupling, the bottom end of the rotating shaft 130 penetrates the threaded hole of the moving block 141 and the bearing on the surface of the support frame 120 in sequence and is arranged in the bearing seat 150, the moving block 141 is arranged at the center position of the rear end wall of the lifting platform 140, the speed detection sensor 143 is arranged on both sides of the front end of the lower surface of the lifting platform 140, the model of the speed detection sensor 143 is LP-DS200 speed detection sensor, the first speed reducer motor 110 drives the rotating shaft 130 to rotate forward or reverse, the rotating shaft 130 rotates forward or reverse to drive the moving block 141 to move upward or downward, and the moving block 141 moves upward or downward to drive the lifting platform 140 to move upward or downward.

[0042] The first speed reduction motor 110 is installed at the top end of the support frame 120, the bottom end of the support frame 120 is installed at the rear end of the upper surface of the base 400, the bearing seat 150 is installed at the rear end of the upper surface of the base 400, the second speed reduction motor 250 is installed on the L-shaped support plate 146, and the L-shaped support plate 146 is installed at the rear end of the lower surface of the lifting platform 140. The rear end wall of the support frame 120 is provided with a control box 500, and the control box 500 is internally provided with a single-chip microcomputer and an A / D conversion module.

[0043] The outer wall of the rotating shaft 130 is provided with external threads, and the external threads on the outer wall of the rotating shaft 130 are in threaded engagement with the threaded holes on the moving block 141.

[0044] The front and rear ends of the outer walls on both sides of the lifting platform 140 are each provided with a first sliding block 142, the other end of the first sliding block 142 is installed on the first sliding rail 310, the first sliding block 142 and the first sliding rail 310 are in sliding connection, and the first sliding rail 310 is installed on the front and rear ends of the outer wall of the first side plate 300. Through the setting of the first sliding block 142 and the first sliding rail 310, the movement of the lifting platform 140 can be limited and guided.

[0045] The front and rear ends of the lower surface of the lifting platform 140 are connected with the second sliding block 145 through the L-shaped connecting rod 144, the other end of the second sliding block 145 is installed on the second sliding rail 230, the second sliding block 145 and the second sliding rail 230 are in sliding connection, and the second sliding rail 230 is installed on the front and rear end walls of the moving plate 220. Through the setting of the second sliding block 145 and the second sliding rail 230, the movement of the moving plate 220 can be limited and guided.

[0046] The buffer assembly 210 is provided with a mounting plate 219, the bottom end center of the mounting plate 219 is provided with a mounting groove 215, the inner side top end of the mounting groove 215 is connected with the buffer plate 217 through the damping air cylinder 211, and the outer wall of the damping air cylinder 211 is externally provided with the spring 212.

[0047] The outer walls of the buffer plate 217 are each provided with a limiting block 214, the other end of the limiting block 214 is installed in the limiting groove 213, the outer wall of the limiting block 214 and the groove wall of the limiting groove 213 are in clearance fit, the limiting groove 213 is provided on the groove walls of the mounting groove 215, the outer wall of the buffer plate 217 and the groove wall of the mounting groove 215 are in clearance fit, the lower surface of the buffer plate 217 is connected with the second inclined clamping plate 218 through the connecting plate 216, and the second inclined clamping plate 218 is located below the mounting plate 219. Because the outer wall of the buffer plate 217 and the groove wall of the mounting groove 215 are in clearance fit, and the outer wall of the limiting block 214 and the groove wall of the limiting groove 213 are in clearance fit, the movement of the buffer plate 217 can be limited and guided.

[0048] Working principle: in use, turn on the external power supply, when the lifting platform 140 falls during the lifting and transporting process of the goods, the speed detection sensor 143 can detect the lifting speed of the lifting platform 140 in real time, when the speed data value detected by the speed detection sensor 143 is greater than the preset speed data value, the single-chip microcomputer in the control box 500 controls the second speed reduction motor 250 to start, the start of the second speed reduction motor 250 drives the cylindrical gear 240 to rotate, the rotation of the cylindrical gear 240 drives the rack 260 on the moving plate 220 to mesh transmission, so that the rotation of the cylindrical gear 240 drives the two moving plates 220 to move, and the moving direction of the two moving plates 220 is opposite, the buffer assembly 210 on the two moving plates 220 is respectively clamped into the first inclined clamping plate 320 on the two side plates 300, so that the further falling of the lifting platform 140 can be blocked, effectively preventing the falling of the lifting platform 140, improving the safety, when the buffer assembly 210 is clamped into the first inclined clamping plate 320, and the second inclined clamping plate 218 and the first inclined clamping plate 320 are in contact and generate impact force, at this time, the cooperation of the spring 212, the damping cylinder 211 and the buffer plate 217 can play a buffering role, reducing the acting force between the second inclined clamping plate 218 and the first inclined clamping plate 320, so that the utility model enhances the anti-impact ability of the lifting platform 140 in the falling process, avoids the situation that the lifting platform 140 is broken due to the impact force caused by the falling process of the lifting platform 140, and further improves the safety.

[0049] The above only describes the preferred embodiments of the utility model and is not used to limit the present application. For those skilled in the art, the present application can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An object fall protection device for an elevator comprising a base (400), characterized in that: The upper surface of the base (400) is provided with side plates (300) on both sides, the side plates (300) are provided with lifting mechanisms (100) between each other, and the lower side of the lifting mechanism (100) is provided with an anti-falling mechanism (200), and the outer wall of the side plate (300) is provided with a first inclined clamping plate (320). The anti-falling mechanism (200) is composed of a buffer assembly (210), a moving plate (220), a second sliding rail (230), a cylindrical gear (240), a second speed reducer (250) and a rack (260), the output shaft of the second speed reducer (250) is provided with a cylindrical gear (240), the upper and lower sides of the cylindrical gear (240) are provided with moving plates (220), the side surface of the moving plate (220) is provided with a rack (260), and the cylindrical gear (240) and the racks (260) on the two moving plates (220) are in meshing connection, and the outer wall of the moving plate (220) is provided with a buffer assembly (210). The lifting mechanism (100) is provided with a first speed reducer (110), the output shaft of the first speed reducer (110) penetrates the surface of the support frame (120) and is connected with the rotating shaft (130) through the shaft coupling, the bottom end of the rotating shaft (130) penetrates the threaded hole of the bearing on the surface of the support frame (120) and the moving block (141) in sequence and is installed in the bearing seat (150), and the moving block (141) is arranged at the center position of the rear end wall of the lifting platform (140), and the speed detection sensor (143) is arranged on the lower surface of the lifting platform (140).

2. The falling object protection device for an elevator according to claim 1, characterized in that: The first speed reducer (110) is installed at the top end of the support frame (120), and the bottom end of the support frame (120) is installed at the rear end of the upper surface of the base (400), the bearing seat (150) is installed at the rear end of the upper surface of the base (400), the second speed reducer (250) is installed on the L-shaped support plate (146), and the L-shaped support plate (146) is installed at the rear end of the lower surface of the lifting platform (140), and the control box (500) is installed on the rear end wall of the support frame (120).

3. The falling object protection device for an elevator according to claim 1, characterized in that: The outer wall of the rotating shaft (130) is provided with external threads, and the external threads on the outer wall of the rotating shaft (130) are in threaded engagement with the threaded holes on the moving block (141).

4. The falling object protection device for an elevator according to claim 1, characterized in that: The front and rear ends of the outer walls of the lifting platform (140) are provided with first sliding blocks (142), the other ends of the first sliding blocks (142) are installed on the first sliding rails (310), the first sliding blocks (142) and the first sliding rails (310) are in sliding connection, and the first sliding rails (310) are installed on the front and rear ends of the outer walls of the first side plates (300).

5. The falling object protection device for an elevator according to claim 1, characterized in that: The front and rear ends of the lower surface of the lifting platform (140) are connected with the second sliding block (145) through the L-shaped connecting rod (144), the other end of the second sliding block (145) is installed on the second sliding rail (230), the second sliding block (145) and the second sliding rail (230) are in sliding connection, and the second sliding rail (230) is installed on the front end wall and the rear end wall of the moving plate (220).

6. The falling object protection device for an elevator according to claim 1, characterized in that: The mounting plate (219) is provided on the buffer assembly (210), a mounting groove (215) is formed at the bottom center of the mounting plate (219), a damping air cylinder (211) is connected with the buffer plate (217) through the top inside of the mounting groove (215), and the outer wall of the damping air cylinder (211) is sleeved with a spring (212) outside.

7. The falling object protection device for an elevator according to claim 6, characterized in that: The outer walls of the buffer plate (217) are provided with limiting blocks (214), the other ends of the limiting blocks (214) are installed in the limiting grooves (213), the outer walls of the limiting blocks (214) and the groove walls of the limiting grooves (213) are in clearance fit, the limiting grooves (213) are formed on the groove walls of the mounting groove (215), the outer wall of the buffer plate (217) and the groove wall of the mounting groove (215) are in clearance fit, the lower surface of the buffer plate (217) is connected with the second inclined clamping plate (218) through the connecting plate (216), and the second inclined clamping plate (218) is located below the mounting plate (219).

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