阅读说明：本技术 一种自动触发式三级保护安全网 (Automatic trigger type three-level protection safety net ) 是由 马博如 王景松 王磊 蒋艳军 王振 王振军 孟兆祥 张玮 黄家伟 张奎 于 2020-07-15 设计创作，主要内容包括：本发明创造提供了一种自动触发式三级保护安全网,包括架体、安全网、传送组件,位于所述架体上方一定距离处安装有人体传感器,所述安全网有三个,三个所述安全网纵向设置,每个安全网均对应设有一个第一悬挂组件和一个第二悬挂组件,每个所述第一悬挂组件底部均通过压力传感器连接有第一U形挂杆,通过挂环与所述安全网的一侧相连,所述安全网的另一侧通过挂环与所述第二悬挂组件相连,每个所述第二悬挂组件底部均通过压力传感器连接有第二U形挂杆,每个所述第二U形挂杆均对应设有一个驱动其在所述架体上滑动的传送组件。本发明创造所述的一种自动触发式三级保护安全网解决了安全网只有一层,安全系数低的问题。(The invention provides an automatic triggering type three-level protection safety net which comprises a frame body, three safety nets and conveying assemblies, wherein human body sensors are arranged above the frame body at a certain distance, each safety net is longitudinally arranged and is correspondingly provided with a first hanging assembly and a second hanging assembly, the bottom of each first hanging assembly is connected with a first U-shaped hanging rod through a pressure sensor and is connected with one side of each safety net through a hanging ring, the other side of each safety net is connected with the second hanging assembly through a hanging ring, the bottom of each second hanging assembly is connected with a second U-shaped hanging rod through a pressure sensor, and each second U-shaped hanging rod is correspondingly provided with a conveying assembly for driving the second hanging rod to slide on the frame body. The automatic triggering type three-level protection safety net provided by the invention solves the problems that only one layer of safety net is provided and the safety coefficient is low.)

1. The utility model provides an automatic formula of triggering tertiary protection safety net (6), its characterized in that: comprises a frame body (1), a safety net (6) and a conveying assembly (2), wherein a human body sensor is arranged above the frame body (1) at a certain distance, the safety net (6) is three, the safety net (6) is vertically arranged, each safety net (6) is correspondingly provided with a first hanging assembly (3) and a second hanging assembly (4), the bottom of each first hanging assembly (3) is connected with a first U-shaped hanging rod (32) through a pressure sensor (345), the first U-shaped hanging rods (32) are fixed on one side of the frame body (1) and connected with one side of the safety net (6) through hanging rings (31), the other side of the safety net (6) is connected with the second hanging assembly (4) through hanging rings (31), and the bottom of each second hanging assembly (4) is connected with a second U-shaped hanging rod (33) through a pressure sensor (345), every second U-shaped peg (33) all correspond and are equipped with its drive and be in gliding conveying subassembly (2) on support body (1), the both sides of the one end that first hanging subassembly (3) was kept away from in support body (1) are equipped with the card that is used for fixing second hanging subassembly (4) are solid subassembly (5), the both ends of second U-shaped peg (33) are equipped with card (23) that card corresponds solid subassembly (5), conveying subassembly (2), human body sensor, pressure sensor (345) all with PLC controller electric connection.

2. An auto-triggered three-level protection safety net (6) according to claim 1, characterized in that: support body (1) includes bracing piece (11), fixed horizontal pole (12), slide rail (13), and the both sides of each safety net (6) all correspond and are equipped with a slide rail (13), slide rail (13) both ends are fixed with one bracing piece (11) are located fixedly connected with fixed horizontal pole (12) between two bracing pieces (11) of safety net (6) same end, first hang subassembly (3) perpendicular to slide rail (13), both ends with bracing piece (11) fixed connection, the second hang subassembly (4) both ends and be fixed with slider (22), through slider (22) with slide rail (13) sliding connection.

3. An auto-triggered three-level protection safety net (6) according to claim 2, characterized in that: the bottom of the supporting rod (11) is provided with a universal wheel (15).

4. An auto-triggered three-level protection safety net (6) according to claim 2, characterized in that: bracing piece (11) bottom still is equipped with supporting element (16), supporting element (16) are including square sleeve (161), square sleeve (161) cover is in the bracing piece (11) outside, vertically open on the telescopic lateral wall has two spacing holes (162), open on bracing piece (11) have with through-hole (343) that spacing hole (162) correspond, square sleeve (161) bottom still is fixed with backup pad (163), open on backup pad (163) have with the opening that bracing piece (11) correspond.

5. An auto-triggered three-level protection safety net (6) according to claim 2, characterized in that: the clamping component (5) comprises a trapezoid clamping block (51) and an expansion link (52), a groove (14) corresponding to the slide rail (13) is formed in the support rod (11) at one end far away from the first suspension component (3), the bottom of the expansion link (52) is fixedly connected with the bottom of the groove (14), the top of the expansion link is fixedly connected with the trapezoid clamping block (51), the inclined plane of the trapezoid clamping block (51) faces towards the slide rail (13), the expansion link (52) is in a large barrel and small barrel sleeved mode, an elastic piece (53) is sleeved outside the expansion link (52), a fixing plate (222) is fixed on the upper portion of the sliding block (22), one side, close to the safety net (6), of the fixing plate (222) is fixedly connected with the first U-shaped hanging rod (32), and a clamping block (23) is fixed at one end, close to the clamping component (5), of the fixing plate (222), one side, far away from the fixing plate (222), of the fixture block (23) is provided with an inclined portion (232) corresponding to the inclined surface of the trapezoid fixture block (51), and a square through hole (231) corresponding to the trapezoid fixture block (51) is formed in the fixture block (23).

6. An auto-triggered three-level protection safety net (6) according to claim 5, characterized in that: the clamping component (5) further comprises an air cylinder (55), the bottom of the trapezoid clamping block (51) extends outwards to form a blocking piece (56), the air cylinder (55) is fixed to the bottom of the groove (14), a telescopic rod (52) of the air cylinder (55) penetrates through a through hole (343) reserved in the blocking piece (56) to be connected with the connecting piece (54) in a sliding mode, the blocking piece (56) is fixed to the end portion of the telescopic rod (52) of the air cylinder (55), and the air cylinder (55) is electrically connected with the PLC.

7. An auto-triggered three-level protection safety net (6) according to claim 1, characterized in that: the conveying assembly (2) comprises a driving motor (24), a driving gear (241), a driven gear (242), a chain (244) and a screw (25), each sliding rail (13) is provided with one screw (25) along the length direction, the two ends of each screw (25) are rotatably connected with the corresponding supporting rod (11) through bearings, one end, close to the corresponding first U-shaped hanging rod (32), of each screw (25) penetrates through the corresponding supporting rod (11), the end, close to one end of the corresponding first U-shaped hanging rod (32), of each screw (25) located on one side of the corresponding first U-shaped hanging rod (32) is fixedly connected with an output shaft of the corresponding driving motor (24) through a coupler, gears are axially fixed at positions between the corresponding driving motor (24) and the corresponding supporting rod (11), the end, far away from one end of the corresponding driving motor (24), of each screw (25) located on the corresponding first U-shaped hanging rod (32), is provided with the driven gear (242) through a bearing, driving gear (241), driven gear (242) directly are equipped with chain (244), the outside cover of conveying subassembly (2) has installation shell (21), installation shell (21) with support body (1) fixed connection, driving motor (24) with installation shell (21) inner wall fixed connection, driving motor (24) and PLC controller electric connection.

8. An auto-triggered three-level protection safety net (6) according to claim 7, wherein: the first suspension assembly (3) and the second suspension assembly (4) comprise a plurality of suspension units (34), each suspension unit (34) comprises a square connecting block (341), a hanging rod (346) and a bolt (344), each square connecting block (341) is provided with a mounting hole (342) along the length direction, both ends of each connecting block are longitudinally provided with through holes (343), one end of each hanging rod (346) is inserted into each mounting hole (342), both ends of each hanging rod (346) are provided with through holes (343) corresponding to the direction connecting blocks, each bolt (344) penetrates through the through holes (343) of the square connecting blocks (341) and the hanging rods (346), so that the square connecting blocks (341) are fixedly connected with the hanging rods (346), and the plurality of suspension units (34) are fixedly connected by inserting the hanging rods (346) into the mounting holes (342) of the square connecting blocks (341) adjacent to the hanging rods, the pressure sensor (345) is fixed at the bottom of each square connecting block (341), the bottom of each pressure sensor (345) is fixedly connected with a U-shaped hanging rod (346), a plurality of hanging rings (31) are hung on each hanging rod (346), and each hanging ring (31) is fixedly connected with a safety net (6).

9. An auto-triggered three-level protection safety net (6) according to claim 8, wherein: openings (331) corresponding to the hanging rods (346) are formed in one sides, close to the safety net (6), of the first U-shaped hanging rod (32) and the second U-shaped hanging rod (33).

Technical Field

The invention belongs to the field of protective devices, and particularly relates to an automatic triggering type three-level protection safety net.

Background

The falling protection safety net is an important safety component of a high-altitude operation hanging basket, and when the falling protection safety net falls in an accident situation during high-altitude operation construction, the falling protection safety net can catch workers to guarantee the safety of the workers. Current safety net generally only has the one deck, in case fracture appears in the weight that can't bear the person that falls, just can't provide the guarantee for staff's safety, and current safety net is fixed with the installing support mostly, and the loading and unloading of being not convenient for is unfavorable for the maintenance of safety net.

Disclosure of Invention

In view of this, the invention provides an automatic triggering type three-level protection safety net to solve the problems that the safety net only has one layer and the safety coefficient is low.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the utility model provides an automatic tertiary protection safety net of formula that triggers, includes support body, safety net, conveying subassembly, is located support body top certain distance department installs human body sensor, the safety net has threely, three the safety net vertically sets up, every safety net all corresponds and is equipped with a first subassembly and a second that hangs, every first subassembly bottom that hangs all is connected with first U-shaped peg through pressure sensor, first U-shaped peg is fixed in one side of support body, through the link with one side of safety net links to each other, the opposite side of safety net pass through the link with the second hangs the subassembly and links to each other, every second hangs the subassembly bottom and all is connected with second U-shaped peg, every second U-shaped peg all corresponds and is equipped with a drive its and is in gliding conveying subassembly on the support body, the support body is kept away from the both sides of first subassembly that hangs the one end of subassembly are equipped with and are used for fixing the second hangs the subassembly The two ends of the second U-shaped hanging rod are provided with clamping blocks corresponding to the clamping components, and the conveying component, the human body sensor and the pressure sensor are electrically connected with the PLC.

Further, an auto-triggering type three-level protection safety net according to claim 1, wherein: the support body includes bracing piece, fixed horizontal pole, slide rail, and the both sides of each safety net all correspond and are equipped with a slide rail, the slide rail both ends are fixed with one the bracing piece is located the safety net is with the fixed horizontal pole of fixedly connected with between two bracing pieces of one end, first hang the subassembly perpendicular to the slide rail, both ends with bracing piece fixed connection, the second hang the subassembly both ends and be fixed with the slider, through the slider with slide rail sliding connection.

Furthermore, universal wheels are installed at the bottom of the supporting rod.

Further, the bracing piece bottom still is equipped with the supporting element, the supporting element includes square sleeve, square sleeve cover is in the bracing piece outside, vertically open on the telescopic lateral wall has two spacing holes, open on the bracing piece have with the through-hole that spacing hole corresponds, square sleeve bottom still is fixed with the backup pad, open in the backup pad have with the opening that the bracing piece corresponds.

Furthermore, the clamping component comprises a trapezoidal clamping block and a telescopic rod, a groove corresponding to the slide rail is formed in the support rod far away from one end of the first hanging component, the bottom of the telescopic rod is fixedly connected with the bottom of the groove, the top of the telescopic rod is fixedly connected with the trapezoidal clamping block, the inclined plane of the trapezoidal clamping block faces towards the slide rail, the telescopic rod is in a large barrel-in-small barrel form, an elastic part is sleeved outside the telescopic rod, a fixing plate is fixed to the upper portion of the slide block, one side, close to the safety net, of the fixing plate is fixedly connected with the first U-shaped hanging rod, a clamping block is fixed to one end, close to the clamping component, of the fixing plate, an inclined part corresponding to the inclined plane of the trapezoidal clamping block is arranged on one side, far away from the fixing plate, of the clamping block, and a.

Furthermore, the clamping and fixing assembly further comprises an air cylinder, the bottom of the trapezoid clamping block extends outwards to form a separation blade, the air cylinder is fixed to the bottom of the groove, a telescopic rod of the air cylinder penetrates through the connecting sheet and is in sliding connection with the connecting sheet through a through hole reserved in the separation blade, the separation blade is fixed to the end portion of the telescopic rod of the air cylinder, and the air cylinder is electrically connected with the PLC.

Furthermore, the conveying assembly comprises a driving motor, a driving gear, a driven gear, a chain and screws, each of the slide rails is provided with a screw along the length direction, two ends of the screw are rotatably connected with the support rod through bearings, one end of the screw close to the first U-shaped hanging rod penetrates through the support rod, the end part of the screw at one side of the first U-shaped hanging rod close to one end of the first U-shaped hanging rod is fixedly connected with an output shaft of the driving motor through a coupler, a gear is axially fixed at a position between the driving motor and the support rod, the end part of the screw at one end of the first U-shaped hanging rod far away from the driving motor is provided with the driven gear through a bearing, the driving gear and the driven gear are directly provided with the chain, an installation shell is sleeved outside the conveying assembly and is fixedly connected with the frame body, the drive motor with installation shell inner wall fixed connection, drive motor and PLC controller electric connection.

Furthermore, the first hanging assembly and the second hanging assembly respectively comprise a plurality of hanging units, each hanging unit comprises a square connecting block, a hanging rod and a bolt, a mounting hole is formed in the square connecting block along the length direction, through holes are longitudinally formed in two ends of the connecting block, one end of each hanging rod is inserted into the mounting hole, through holes corresponding to the direction connecting blocks are formed in two ends of each hanging rod, each bolt penetrates through the through holes of the square connecting blocks and the hanging rods, so that the square connecting blocks are fixedly connected with the hanging rods, the hanging rods are fixedly connected with the mounting holes of the adjacent square connecting blocks by inserting the hanging rods into the mounting holes of the adjacent square connecting blocks, one pressure sensor is fixed at the bottom of each square connecting block, the bottoms of the pressure sensors are fixedly connected with the U-shaped hanging rods, and a plurality of hanging rings are hung on each hanging rod, each hanging ring is fixedly connected with the safety net.

Furthermore, openings corresponding to the hanging rods are formed in one sides, close to the safety net, of the first U-shaped hanging rod and the second U-shaped hanging rod.

Compared with the prior art, the invention has the following advantages:

(1) the safety net has the tertiary, and every level safety net all corresponds and is equipped with conveying assembly, and when last one-level received pressure and exceeded safety threshold, the safety net of lower one deck was opened automatically, has prevented effectively that the safety net from breaking the disconnection and causing the person that falls to be injured.

(2) The second suspension component is fixed by the clamping and fixing component, so that the safety net is prevented from moving when a falling person is received.

(3) It is a plurality of hang the unit and carry out the joint through the bolt, only need take out the bolt, part square connecting block and peg and can take out the link, the replacement of the safety net of being convenient for.

(4) A gravity sensor is installed at the bottom of each square connecting block, when the pulling force received by the corresponding hanging ring on the hanging rod connected with the gravity sensor fluctuates, the gravity sensor can detect irregular change of stress, the pressure is reduced sharply when the hanging ring is disconnected, and then whether the hanging ring is disconnected or not can be sensed sensitively.

(5) The universal wheels are installed at the bottom of the supporting rod, so that the support body can be conveniently carried and moved.

(6) Move the support unit down, make the universal wheel retrieve in the square sleeve, reuse above-mentioned method and fix the sleeve, make backup pad and body face laminating, and then whole support body is more stable, avoids removing.

(7) The first U-shaped hanging rod and the second U-shaped hanging rod are close to one side of the safety net, openings corresponding to the hanging rods are formed in one side of the safety net, hanging rings are connected with the safety net conveniently, and friction between the hanging rings or the safety net and the first U-shaped hanging rod and the second U-shaped hanging rod is reduced

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

fig. 1 is a schematic view of an auto-triggered three-level protection safety net according to an embodiment of the present invention;

fig. 2 is a schematic view of a frame body, a first suspension assembly and a second suspension assembly according to an embodiment of the present invention;

FIG. 3 is a schematic view of a supporting unit and a universal wheel according to an embodiment of the present invention;

FIG. 4 is a schematic view of a first U-shaped hanging rod and a second U-shaped hanging rod according to the embodiment of the present invention;

FIG. 5 is a schematic view of a clamping assembly according to an embodiment of the present invention;

FIG. 6 is a schematic view of a slider according to an embodiment of the present invention;

FIG. 7 is an enlarged partial view of a transfer module according to an embodiment of the present invention;

FIG. 8 is a schematic view of a driven gear according to an embodiment of the present invention;

FIG. 9 is a schematic view of a transfer module according to an embodiment of the present invention;

FIG. 10 is a schematic view of a first suspension assembly according to an embodiment of the present invention;

fig. 11 is a schematic view of a suspension unit according to an embodiment of the present invention.

Description of reference numerals:

1-a frame body; 11-a support bar; 12-a fixed cross bar; 13-a slide rail; 14-a groove; 15-universal wheels; 16-a support unit; 161-square sleeve; 162-a limiting hole; 163-a support plate; 2-a transfer assembly; 21-mounting the housing; 22-a slide block; 221-a threaded hole; 222-a fixed plate; 23-a fixture block; 231-square through ports; 232-an inclined portion; 24-a drive motor; 241-a drive gear; 242-a driven gear; 243-baffle; 244-a chain; 25-screw rod; 3-a first suspension assembly; 31-hanging ring; 32-a first U-shaped hanger bar; 33-a second U-shaped hanger bar; 331-opening; 34-a suspension unit; 341-square connecting block; 342-a mounting hole; 343-a through hole; 344-a latch; 345-a pressure sensor; 346-hanging rod; 4-a second suspension assembly; 5-a clamping component; 51-trapezoidal fixture blocks; 52-a telescopic rod; 53-a resilient member; 54-connecting pieces; 55-cylinder; 56-baffle plate; 6-safety net; 7-human body detection sensor.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

As shown in fig. 1, 2 and 4, an automatic triggering type three-level protection safety net 6 comprises a frame body 1, a safety net 6 and a conveying assembly 2, wherein a human body sensor is installed at a position which is positioned at a certain distance above the frame body 1 and is provided with universal wheels 15, three safety nets 6 provided with the universal wheels 15 are longitudinally arranged, each safety net 6 is correspondingly provided with a first hanging assembly 3 and a second hanging assembly 4, the bottom of each first hanging assembly 3 provided with the universal wheels 15 is connected with a first U-shaped hanging rod 32 through a pressure sensor 345, the first U-shaped hanging rod 32 provided with the universal wheels 15 is fixed at one side of the frame body 1 provided with the universal wheels 15 and is connected with one side provided with the safety net 6 provided with the universal wheels 15 through a hanging ring 31, the other side provided with the safety net 6 provided with the universal wheels 15 is connected with the second hanging assembly 4 provided with the universal wheels 15 through a hanging ring 31, every installs universal wheel 15 second and hangs 4 bottoms of subassembly and all is connected with second U-shaped peg 33 through pressure sensor 345, every installs universal wheel 15 second U-shaped peg 33 and all corresponds and is equipped with its gliding conveying assembly 2 of drive on installing universal wheel 15 support body 1, the both sides of installing the one end of universal wheel 15 support body 1 and keeping away from installing universal wheel 15 first suspension assembly 3 are equipped with the solid subassembly 5 of card that is used for fixed mounting to have universal wheel 15 second suspension assembly 4, the both ends of installing universal wheel 15 second U-shaped peg 33 are equipped with and install the solid subassembly 5 of card 23 of universal wheel 15 card, install universal wheel 15 conveying assembly 2, human body sensor, pressure sensor 345 all with PLC controller electric connection. Human body sensor sets up in the distance more than 6 at least four meters apart from the safety net, detects someone when falling and gives the PLC controller with signal transmission, and the conveying subassembly 2 work that PLC controller control superiors safety net 6 corresponds, and conveying subassembly 2 drives the superiors safety net 6 second and hangs subassembly 4 and remove to the 1 other end of support body to make folding safety net 6 open, the card solid subassembly 5 carries out the card solid to second U-shaped peg 33, and then fixes safety net 6.

As shown in fig. 1 to 2, install universal wheel 15 support body 1 and include bracing piece 11, fixed horizontal pole 12, slide rail 13, the both sides of each safety net 6 all correspond and are equipped with a slide rail 13, install universal wheel 15 slide rail 13 both ends and be fixed with one and install universal wheel 15 bracing piece 11, be located fixedly connected with fixed horizontal pole 12 between two bracing pieces 11 of installing universal wheel 15 safety net 6 with the one end, install universal wheel 15 first suspension assembly 3 perpendicular to and install universal wheel 15 slide rail 13, both ends and the installation have universal wheel 15 bracing piece 11 fixed connection, install universal wheel 15 second suspension assembly 4 both ends and be fixed with slider 22, through slider 22 with install universal wheel 15 slide rail 13 sliding connection. When human body induction sensor did not detect someone and fall, first suspension assembly 3 and second that same safety net 6 corresponds hang subassembly 4 and press close to, make safety net 6 folding, prevent that debris from falling on safety net 6 or because the 6 unnecessary damage of safety net that environmental factor caused, only when human body sensor senses the human body and falls, second suspension assembly 4 just can remove the one end of keeping away from first suspension assembly 3 under the drive of conveying assembly 2, opens safety net 6.

As shown in fig. 1 to 3, universal wheels 15 are mounted at the bottom of the support rod 11, so that the frame body 1 can be conveniently carried and moved.

As shown in fig. 1 to 3, the bottom of the supporting rod 11 provided with the universal wheel 15 is further provided with a supporting unit 16, the supporting unit 16 provided with the universal wheel 15 comprises a square sleeve 161, the square sleeve 161 provided with the universal wheel 15 is sleeved outside the supporting rod 11 provided with the universal wheel 15, two limiting holes 162 are longitudinally formed in the side wall provided with the universal wheel 15 sleeve, the supporting rod 11 provided with the universal wheel 15 is provided with a through hole 343 corresponding to the limiting hole 162 provided with the universal wheel 15, the bottom of the square sleeve 161 provided with the universal wheel 15 is further fixed with a supporting plate 163, and the supporting plate 163 provided with the universal wheel 15 is provided with a through hole corresponding to the supporting rod 11 provided with the universal wheel 15. When the frame body 1 needs to be moved or carried, the supporting unit 16 is upwards retracted, the screw sequentially penetrates through the through holes 343 of the square sleeve 161 and the supporting rod 11 to be fixed, the universal wheel 15 is exposed, the supporting unit 16 is downwards moved after the frame body is conveyed to a designated position, the universal wheel 15 is retracted into the square sleeve 161, the sleeve is fixed by using the method again, the supporting plate 163 is attached to the body surface, and then the whole frame body 1 is more stable and prevented from moving.

As shown in fig. 5 and 6, the universal wheel 15-mounted clamping component 5 comprises a trapezoidal fixture block 23 and a telescopic rod 52, a universal wheel 15-mounted support rod 11 far away from one end of a first hanging component 3 provided with a universal wheel 15 is provided with a groove 14 corresponding to a slide rail 13 provided with a universal wheel 15, the bottom of the telescopic rod 52 provided with the universal wheel 15 is fixedly connected with the bottom of the groove 14 provided with the universal wheel 15, the top of the telescopic rod 52 provided with the universal wheel 15 is fixedly connected with the trapezoidal fixture block 23 provided with the universal wheel 15, an inclined plane provided with the trapezoidal fixture block 23 provided with the universal wheel 15 faces towards the slide rail 13 provided with the universal wheel 15, the telescopic rod 52 provided with the universal wheel 15 is in a large barrel-barrel form, the telescopic rod 52 provided with the universal wheel 15 is externally sleeved with an elastic part 53, the upper part of a slide block 22 provided with the universal wheel 15 is fixedly provided, the fixing plate 222 provided with the universal wheel 15 is fixed with a clamping block 23 at one end close to the clamping component 5 provided with the universal wheel 15, one side of the clamping block 23 provided with the universal wheel 15, which is far away from the fixing plate 222 provided with the universal wheel 15, is provided with an inclined part 232 corresponding to the inclined surface provided with the trapezoidal clamping block 23 of the universal wheel 15, and the clamping block 23 provided with the universal wheel 15 is provided with a square through hole 231 corresponding to the trapezoidal clamping block 23 provided with the universal wheel 15. Conveying assembly 2 drives slider 22 that is located first U-shaped peg 32 both ends and lasts forward movement, when the inclined portion 232 of fixture block 23 and the inclined plane contact of trapezoidal fixture block 23, fixture block 23 continues to move forward, the inclined plane of trapezoidal fixture block 23 receives the decurrent pressure of inclined portion 232 of fixture block 23, telescopic link 52 contracts downwards, elastic component 53 is extrudeed downwards, when square opening 231 moves trapezoidal fixture block 23 top, the pressure that trapezoidal fixture block 23 received disappears, with trapezoidal fixture block 23 jack-up that makes progress under elastic component 53's elastic force effect, stretch into in square opening 231, accomplish the joint to fixture block 23, and then make second U-shaped peg 33 fix the one end of keeping away from first U-shaped peg 32 at support body 1.

As shown in fig. 5, the fixed assembly 5 of universal wheel 15 card still includes the cylinder 55, install the trapezoidal fixture block 23 bottom of universal wheel 15 and outwards extend and form separation blade 56, install universal wheel 15 cylinder 55 and be fixed in and install universal wheel 15 recess 14 bottom, the telescopic link 52 of installing universal wheel 15 cylinder 55 runs through in installing universal wheel 15 connection piece 54 and installing universal wheel 15 connection piece 54 sliding connection through the through-hole 343 of installing the reservation of universal wheel 15 separation blade 56, the end fixing of the telescopic link 52 of installing universal wheel 15 cylinder 55 has separation blade 56, install universal wheel 15 cylinder 55 and PLC controller electric connection. After the safety net 6 is used up, the telescopic rod 52 of the air cylinder 55 is controlled by the PLC to contract downwards, so that the trapezoidal fixture block 23 is pulled downwards, then the conveying assembly 2 is controlled by the PLC to drive the second suspension assembly 4 to return to the initial position, the telescopic rod 52 of the air cylinder 55 extends upwards to the initial position, and then the trapezoidal fixture block 23 returns to the initial position under the action of the spring.

As shown in fig. 7 to 9, the conveying assembly 2 with the universal wheels 15 comprises a driving motor 24, a driving gear 241, a driven gear 242, a chain 244 and screws 25, each of the slide rails 13 with the universal wheels 15 is provided with a screw 25 along the length direction, two ends of the screw 25 with the universal wheels 15 are rotatably connected with the supporting rod 11 with the universal wheels 15 through bearings, one end of the screw 25 with the universal wheels 15, which is close to the first U-shaped hanging rod 32 with the universal wheels 15, penetrates through the supporting rod 11 with the universal wheels 15, the end of the screw 25 with the universal wheels 15, which is located at one side of the first U-shaped hanging rod 32 with the universal wheels 15, which is close to the end of the first U-shaped hanging rod 32 with the universal wheels 15, is fixedly connected with an output shaft with the driving motor 24 with the universal wheels 15 through a coupler, a gear is axially fixed at the position between the driving motor 24 with the universal wheels 15 and, lie in and install first U-shaped peg 32 of universal wheel 15 and keep away from 25 tip of screw rod of installing 24 one ends of universal wheel driving motor and install driven gear 242 through the bearing, install 15 driving gear 241 of universal wheel, driven gear 242 directly is equipped with chain 244, it has installation shell 21 to install the outside cover of 15 transport unit of universal wheel 2, install 15 installation shell 21 of universal wheel and install 1 fixed connection of 15 support bodies of universal wheel, install 15 driving motor 24 of universal wheel and install the fixed connection of 21 inner walls of 15 installation shells of universal wheel, install 15 driving motor 24 of universal wheel and PLC controller electric connection. When the human body detection sensor 7 detects that a human body falls, the PLC controller controls the driving motor 24 to operate in the forward direction to drive the screw 25 and the driving gear 241 connected with the driving motor to rotate, the driving gear 241 drives the driven wheel to rotate synchronously with the driving gear 241 through the chain 244, the driven gear 242 drives the screw 25 connected with the driven gear to rotate, the sliding blocks 22 on the two sides move synchronously, and the second U-shaped hanging rod 33 is driven to move forwards.

As shown in fig. 10 to 11, the first suspension assembly 3 and the second suspension assembly 4 with the universal wheels 15 mounted thereon each include a plurality of suspension units 34, each suspension unit 34 with the universal wheels 15 mounted thereon includes a square connection block 341, a hanging rod 346, and a plug 344, each square connection block 341 with the universal wheels 15 mounted thereon is provided with a mounting hole 342 along a length direction, both ends with the connection blocks with the universal wheels 15 mounted thereon are longitudinally provided with through holes 343, one end with the hanging rod 346 with the universal wheels 15 mounted thereon is inserted into the mounting hole 342 with the universal wheels 15 mounted thereon, both ends with the hanging rod 346 with the universal wheels 15 mounted thereon are provided with through holes 343 corresponding to the connection blocks with the universal wheels 15 mounted thereon, each plug 344 with the universal wheels 15 mounted thereon penetrates through the through holes 343 with the square connection blocks 341 and the hanging rods 346 mounted thereon, so that the square connection blocks 341 with the universal wheels 15 mounted thereon are fixedly connected with the hanging rods 346 with the universal wheels 15 mounted thereon, and the plurality of suspension units 34 with the universal The mounting holes 342 of the square connecting blocks 341 are fixedly connected, the bottom of each square connecting block 341 provided with the universal wheel 15 is fixedly provided with a pressure sensor 345 provided with the universal wheel 15, the bottom of each pressure sensor 345 provided with the universal wheel 15 is fixedly connected with the U-shaped hanging rod 346, each hanging rod 346 provided with the universal wheel 15 is hung with a plurality of hanging rings 31, and each hanging ring 31 is fixedly connected with the safety net 6. The sensor continuously transmits monitoring data to the PLC controller, when the pressure value is larger than a preset safety threshold value, the PLC controller controls the safety net 6 on the second layer to be opened, the falling person is protected on the second layer, and when the pressure value monitored by the second layer pressure sensor 345 is larger than the safety threshold value, the PLC controller controls the safety net 6 on the third layer to be opened. Because the bottom of each square connecting block 341 is provided with one pressure sensor 345, and each hanging rod 346 is connected with at least two hanging rings 31, when the individual hanging ring 31 is separated from the safety net 6 or the safety net 6 is broken due to overlarge bearing weight, irregular fluctuation occurs in data transmitted by the pressure sensor 345, and at the moment, the PLC also controls the lower-layer safety net 6 to be opened to protect a falling person. The bottom of each square connecting block 341 is provided with a gravity sensor, when the pulling force received by the corresponding hanging ring 31 on the hanging rod 346 connected with the gravity sensor fluctuates, the gravity sensor can detect irregular change of stress, the pressure is sharply reduced when the hanging ring 31 is disconnected, and then whether the hanging ring 31 is disconnected or not can be sensitively sensed.

As shown in fig. 4 and 10, the first U-shaped hanging rod 32 and the second U-shaped hanging rod 33 provided with the universal wheels 15 are provided with openings 331 corresponding to the hanging rods 346 provided with the universal wheels 15 on the sides close to the safety net 6 provided with the universal wheels 15, so that the hanging rings 31 can be conveniently connected with the safety net 6, and the friction between the hanging rings 31 or the safety net 6 and the first U-shaped hanging rod 32 and the second U-shaped hanging rod 33 can be reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.