阅读说明：本技术 一种带有防护装置的市政道路窨井 (Town road inspection shaft with protector ) 是由 黄汉涛 邓若非 苏慧超 雷宏稳 陈小娴 魏志友 陶华超 谭伟勇 卢仙桂 叶晓欧 于 2019-09-25 设计创作，主要内容包括：本发明涉及一种带有防护装置的市政道路窨井,其包括窨井本体,窨井本体靠近窨井口位置设有防护装置,防护装置包括安装环、设置在安装环内圈的防坠网、以及用于将防坠网连接在安装环的缓冲组件,安装环的内圈沿周向设有若干用于安装缓冲组件的安装槽,缓冲组件包括滑动块、拉绳、限位环和第一弹性件,滑动块滑动安装在安装槽,拉绳一端固定在滑动块、另一端延伸出安装槽,限位环套接在安装槽的槽口,第一弹性件套接在拉绳,第一弹性件的一端接固定在滑动块、另一端固定在限位环；防坠网的边缘处设有与拉绳相对应的连接绳,连接绳与拉绳通过连接组件拆卸式连接；安装环通过安装组件拆卸式安装在窨井本体。本发明具有防坠网不易断裂的效果。(The invention relates to a municipal road inspection well with a protection device, which comprises an inspection well body, wherein the inspection well body is provided with the protection device at a position close to an inspection well opening, the protection device comprises a mounting ring, an anti-falling net arranged at the inner ring of the mounting ring and a buffer assembly used for connecting the anti-falling net to the mounting ring, the inner ring of the mounting ring is circumferentially provided with a plurality of mounting grooves used for mounting the buffer assembly, the buffer assembly comprises a sliding block, a pull rope, a limiting ring and a first elastic member, the sliding block is slidably mounted in the mounting grooves, one end of the pull rope is fixed on the sliding block, the other end of the pull rope extends out of the mounting grooves, the limiting ring is sleeved in a notch of the mounting grooves, the first elastic member is sleeved on the; the edge of the anti-falling net is provided with a connecting rope corresponding to the pull rope, and the connecting rope is detachably connected with the pull rope through a connecting assembly; the collar is installed at the inspection shaft body through installation component dismantlement formula. The anti-falling net has the effect of preventing the anti-falling net from being broken easily.)

1. The utility model provides a town road inspection shaft with protector, includes inspection shaft body (1), its characterized in that: the inspection well body (1) is provided with a protective device for preventing falling into the inspection well mouth close to the inspection well mouth, the protective device comprises a mounting ring (2), a falling prevention net (3) arranged in the inner ring of the mounting ring (2) and a buffer component for connecting the falling prevention net (3) to the mounting ring (2), the inner ring of the mounting ring (2) is provided with a plurality of mounting grooves (21) for mounting the buffer component along the circumferential direction, the buffer component comprises a sliding block (211), a pull rope (214), a limiting ring (213) and a first elastic piece (212), the sliding block (211) is slidably mounted in the mounting groove (21), one end of the pull rope (214) is fixed on the sliding block (211) and the other end of the pull rope extends out of the mounting groove (21), the limiting ring (213) is sleeved on a notch of the mounting groove (21), and the first elastic piece (212) is sleeved on, one end of the first elastic piece (212) is fixedly connected with the sliding block (211), and the other end of the first elastic piece is fixedly connected with the limiting ring (213); the edge of the anti-falling net (3) is provided with a connecting rope (31) corresponding to the pull rope (214), and the connecting rope (31) is detachably connected with the pull rope (214) through a connecting assembly; the mounting ring (2) is detachably mounted on the inspection well body (1) through a mounting assembly.

2. The municipal road inspection shaft with the protection device according to claim 1, wherein the connection assembly comprises: sleeve (22), follow arc grip block (23) that sleeve (22) opening one side circumference set up and be used for the drive spacing nut (24) that arc grip block (23) tightened up each other, the fixed stay cord (214) of one end of arc grip block (23) are kept away from in sleeve (22), the outside of arc grip block (23) is equipped with external screw thread (231) with spacing nut (24) looks adaptation, connect rope (31) and pass and stretch into sleeve (22) between arc grip block (23).

3. The municipal road inspection shaft with the protection device according to claim 2, wherein the arc-shaped clamping blocks (23) are provided with anti-skid insections (232) on the side facing the connecting rope (31).

4. The municipal road inspection shaft with the protection device according to claim 3, wherein a limiting block (233) for limiting the rotation distance of the nut is arranged on the outer side of the arc-shaped clamping block (23) far away from the sleeve (22).

5. The municipal road inspection shaft with the protection device according to claim 4, wherein an arc-shaped groove (2131) is formed in one side, away from the inspection shaft opening, of the inner ring of the limiting ring (213).

6. The municipal road inspection shaft with the protection device according to claim 5, wherein a plurality of hooks (18) are arranged at intervals along the circumferential direction on the inner ring of the mounting ring (2), a spare rope (32) is arranged along the edge of the anti-falling net (3), and a hanging ring (321) matched with the hooks (18) is arranged at one end, far away from the anti-falling net (3), of the spare rope (32); when the sliding block (211) slides to the maximum distance towards the limiting ring (213), the standby rope (32) is in a straightening state; when the sliding block (211) is in a sliding state, the standby rope (32) is in a slack state.

7. The municipal road inspection shaft with the protective device according to claim 5, wherein the mounting assembly comprises: the inspection well mouth installing device comprises sliding grooves (11) arranged at intervals along the edge of an inspection well mouth and clamping blocks (25) arranged on the outer ring of an installing ring (2) at intervals, wherein the clamping blocks (25) are matched with the sliding grooves (11), the sliding grooves (11) extend downwards vertically, clamping grooves (12) extend along the horizontal circumferential direction at one end of the sliding grooves (11) far away from the inspection well mouth, and each clamping groove (12) extends towards the same direction; and a limiting component for limiting the clamping block (25) in the clamping groove (12) is arranged in the sliding groove (11).

8. The municipal road inspection shaft with the protection device according to claim 6, wherein the limiting assembly comprises: install second elastic component (14) at spout (11) tank bottom, install second elastic component (14) keep away from to clamp plate (15), locate spout (11) tank bottom and along vertical downwardly extending's cooperation groove (13) and slidingtype installation of spout (11) tank bottom one end baffle (16) in cooperation groove (13), the one end of baffle (16) is fixed support in clamp plate (15), the other end extend to cooperation groove (13), baffle (16) are followed spout (11) and are close to notch one side slip of screens groove (12).

9. The municipal road inspection shaft with the protection device according to claim 8, wherein the second elastic member (14) is sleeved with a folding waterproof cover (17), one end of the waterproof cover (17) is fixed on the baffle plate (16), and the other end of the waterproof cover is fixed on the bottom of the sliding groove (11).

10. The town road inspection well with protective device according to claim 9, wherein a guide ball (251) is arranged on one side of the clamping block (25) close to the bottom of the clamping groove (12), a first guide groove (151) matched with the guide ball (251) is arranged on one side of the pressing plate (15) far away from the second elastic part (14), a second guide groove (121) communicated with the first guide groove (151) is arranged on the bottom of the clamping groove (12), and the extending direction of the first guide groove (151) and the extending direction of the second guide groove (121) are consistent with the extending direction of the clamping groove (12).

Technical Field

The invention relates to the technical field of municipal roads, in particular to a municipal road inspection shaft with a protection device.

Background

At present, along with the development of society and the continuous increase of buildings, a plurality of inspection wells are distributed on municipal roads, the inspection wells are also called sand wells and are underground spaces for transferring and controlling urban underground pipelines, and the inspection wells are usually covered by inspection well covers; because the road can be walked on it by someone, consequently when losing at the inspection shaft lid or constructor carries out maintenance work in the inspection shaft after opening the inspection shaft lid, need protect the inspection shaft mouth and handle, prevent that the pedestrian from falling into the inspection shaft in the in-process of traveling and causing the injury.

At present, a reticular anti-falling net is fixed at a position close to an inspection well opening in the inspection well, the anti-falling net is installed by hooks fixed on the inner side wall of the inspection well at intervals, and can fall on the anti-falling net close to the inspection well opening when a pedestrian does not notice falling, so that the running safety protection of the pedestrian is achieved.

The above prior art solutions have the following drawbacks: this prevent weighing down mounting means of net is a rigid mounting, prevents weighing down the self buffer capacity of net when the pedestrian falls and is limited, causes very easily to prevent weighing down the junction emergence fracture of net, especially when the pedestrian that falls is the stature comparatively huge, does not have the broken possibility of the net of preventing weighing down of buffer connection then can be bigger.

Disclosure of Invention

The invention aims to provide a municipal road inspection well with a protective device, which has the effect that an anti-falling net is not easy to break.

The above object of the present invention is achieved by the following technical solutions:

the municipal road inspection well with the protection device comprises an inspection well body, wherein the inspection well body is provided with the protection device used for preventing falling into the inspection well body at a position close to an inspection well opening, the protection device comprises a mounting ring, an anti-falling net arranged on the inner ring of the mounting ring and a buffer assembly used for connecting the anti-falling net to the mounting ring, the inner ring of the mounting ring is provided with a plurality of mounting grooves used for mounting the buffer assembly along the circumferential direction, the buffer assembly comprises a sliding block, a pull rope, a limiting ring and a first elastic piece, the sliding block is slidably mounted in the mounting grooves, one end of the pull rope is fixed on the sliding block, the other end of the pull rope extends out of the mounting grooves, the limiting ring is sleeved on the notch of the mounting grooves, the first elastic piece is sleeved on the pull rope, one end of the; the edge of the anti-falling net is provided with a connecting rope corresponding to the pull rope, and the connecting rope is detachably connected with the pull rope through a connecting assembly; the mounting ring is detachably mounted on the inspection well body through the mounting assembly.

By adopting the technical scheme, the mounting ring is fixed on the inspection well body through the mounting assembly, the anti-falling net is mounted on the mounting ring through the connecting assembly, when a person falls into the inspection well body, the anti-falling net receives vertical downward pressure, the connecting rope connected to the anti-falling net can pull the pull rope to enable the sliding block to compress the first elastic piece, so that the anti-falling net plays a role in buffering, the anti-falling net cannot be easily broken when the person with a fatter body falls, and the safety performance is improved; thereby can dismantle the connection to preventing weighing down the net through coupling assembling and guarantee can conveniently to prevent weighing down the net and change after a period, and need not to demolish the collar simultaneously and carry out together change, reduced the waste of resource.

The invention is further configured to: the connecting assembly includes: the sleeve, follow arc grip block that sleeve opening one side circumference set up and be used for the drive the limit nut that the arc grip block tightened up each other, the fixed stay cord of one end of arc grip block is kept away from to the sleeve, the outside of arc grip block is equipped with the external screw thread with limit nut looks adaptation, connect the rope and pass and stretch into the sleeve between the arc grip block.

Through adopting above-mentioned technical scheme, when the net is prevented weighing down in the installation, earlier pass the connection rope between the arc grip block and stretch into the sleeve again, thereby it is tight to connect the rope clamp to reach the fixed of connecting the rope, reach the installation to preventing weighing down the net promptly through stop nut and external screw thread fit make tightening up each other between the arc grip block to this installation can not only reach the effect of dismouting, and convenient operation.

The invention is further configured to: one side of arc grip block towards connecting the rope is equipped with anti-skidding insection.

Through adopting above-mentioned technical scheme, the purpose that is equipped with anti-skidding insection is in order to increase the frictional force of connecting rope and arc grip block to improve and connect rope and coupling assembling connection stability, avoid falling at the pedestrian and connect the rope and slide from coupling assembling behind the anti-falling net, improved holistic security promptly.

The invention is further configured to: and a limiting block for limiting the rotation distance of the nut is arranged at the position, far away from the sleeve, of the outer side of the arc-shaped clamping block.

Through adopting above-mentioned technical scheme, the purpose that is provided with the stopper is in order to guarantee can not partially or twist completely from the external screw thread when twisting stop nut towards arc grip block direction, and can carry out spacingly to stop nut, practices thrift installation time and improves coupling assembling's practicality.

The invention is further configured to: and an arc-shaped groove is formed in one side, away from the inspection well opening, of the inner ring of the limiting ring.

Through adopting above-mentioned technical scheme, when connecting the rope and tightening, the stay cord can contact with the inner circle edge of spacing ring promptly, is provided with the arc wall and makes the contact between stay cord and the spacing ring be smooth contact to make the difficult emergence fracture of stay cord, improved this security of preventing weighing down the net.

The invention is further configured to: a plurality of hooks are arranged at intervals along the circumferential direction of the inner ring of the mounting ring, a standby rope is arranged along the edge of the anti-falling net, and a hanging ring matched with the hooks is arranged at one end, far away from the anti-falling net, of the standby rope; when the sliding block slides to the maximum distance towards the limiting ring, the standby rope is in a straightening state; when the sliding block is in a sliding state, the standby rope is in a loose state.

Through adopting above-mentioned technical scheme, hang the couple in the collar that sets up at the collar through the link that will connect at reserve rope to for the sliding block slides when making reserve rope straighten towards the spacing ring to the maximum distance, thereby guaranteed promptly to enable to prevent weighing down the effect that the net played the buffering, and can also reach even in case when connecting rope or stay cord separation, can also have reserve rope and will prevent weighing down the net and pull, improved the overall security who prevents weighing down the net.

The invention is further configured to: the mounting assembly includes: the inspection well mouth structure comprises sliding grooves and clamping blocks, wherein the sliding grooves are formed in the edge of the inspection well mouth at intervals, the clamping blocks are arranged on an outer ring of a mounting ring at intervals, the clamping blocks are matched with the sliding grooves, the sliding grooves extend downwards vertically, clamping grooves extend along the horizontal circumferential direction at one end of the sliding grooves, which is far away from the inspection well mouth, and each clamping groove extends towards the same direction; and a limiting component used for limiting the clamping block in the clamping groove is arranged in the sliding groove.

Through adopting above-mentioned technical scheme, when installing the collar, at first will set up the screens piece that is setting up at the collar and slide in along the spout, rotate the collar when screens piece slides to the relative position in screens groove and make screens piece screens groove, thereby spacing subassembly of rethread makes screens piece restriction reach the stable installation to the collar in the screens inslot.

The invention is further configured to: the spacing subassembly includes: install at the second elastic component of spout tank bottom, install the second elastic component keeps away from the push plate that supports of spout tank bottom one end, locates the spout tank bottom and installs along vertical downwardly extending's cooperation groove and slidingtype the baffle in the cooperation inslot, the one end of baffle is fixed support in push plate, the other end extend to the cooperation inslot, the baffle slides along the spout notch one side that is close to the screens groove.

Through adopting above-mentioned technical scheme, when installing the collar extension, earlier block butt is supporting the clamp plate, then press downwards towards vertical for the position of block is corresponding with the screens groove, rotate the collar extension again and make the screens block card go into the screens groove, when the screens block gets into the screens groove completely, support the clamp plate because the effect of second elastic component makes to support the clamp plate and slide towards the notch direction of spout, and drive the baffle and remove towards the notch direction of spout, thereby reached and carried out spacingly to the block.

The invention is further configured to: the second elastic piece is sleeved with a folding type waterproof cover, one end of the waterproof cover is fixed to the baffle, and the other end of the waterproof cover is fixed to the bottom of the sliding groove.

Through adopting above-mentioned technical scheme, in order to guarantee when the rainy day when being equipped with the effect of buckler, the rainwater can not contact with second elastic component to the elastic property that makes second elastic component causes and weakens, thereby avoids appearing the phenomenon that is not smooth and easy when carrying out the use after a period.

The invention is further configured to: the tank bottom one side that the screens piece is close to the screens groove is equipped with the direction ball, support the clamp plate keep away from one side of second elastic component be equipped with the first guide way of direction ball looks adaptation, the tank bottom in screens groove is equipped with the second guide way that communicates mutually with first guide way, the extending direction of first guide way with the extending direction in second guide way all is unanimous with the extending direction in screens groove.

Through adopting above-mentioned technical scheme, make direction ball and first guide way contact earlier when the screens piece contacts with supporting the pressure plate, when supporting the pressure plate and supporting the position correspondence to first guide way and second guide way, the screens piece can more smoothly slide into the screens inslot, also can reduce the screens piece too much and the lateral wall friction in screens groove.

In conclusion, the beneficial technical effects of the invention are as follows:

the mounting ring is fixed on the inspection well body through the mounting assembly, the anti-falling net is mounted on the mounting ring through the connecting assembly, when a person falls into the inspection well body, the anti-falling net receives vertical downward pressure, the connecting rope connected to the anti-falling net can pull the pull rope to enable the sliding block to compress the first elastic piece, and therefore the anti-falling net plays a buffering role, the anti-falling net cannot be easily broken when the person with a fatter figure falls, and safety performance is improved; the anti-falling net is detachably connected through the connecting assembly, so that the anti-falling net can be conveniently replaced after a period of time, and the mounting rings are not required to be detached simultaneously for replacement, so that the waste of resources is reduced;

when the anti-falling net is installed, the connecting rope firstly penetrates through the arc-shaped clamping blocks and then extends into the sleeve, and then the arc-shaped clamping blocks are mutually tightened through the matching of the limiting nut and the external thread so as to clamp the connecting rope, so that the connecting rope is fixed, namely the anti-falling net is installed, and the installation process not only can achieve the effect of disassembly and assembly, but also is convenient to operate;

the hanging ring connected with the standby rope is hung on the hook arranged on the mounting ring, and when the standby rope is straightened, the sliding block slides to the limiting ring to the maximum distance, so that the anti-falling net can play a buffering role, and the anti-falling net can be pulled by the standby rope even if the connecting rope or the pull rope is separated, so that the overall safety of the anti-falling net is improved;

when installing the collar, at first will set up the screens piece that the collar slides in along the spout, the screens piece rotates the collar when sliding to the relative position in screens groove and makes screens piece card go into the screens groove, thereby rethread spacing subassembly makes screens piece restriction reach the stable installation to the collar in the screens inslot.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a cross-sectional view of the connection between the fall arrest net of the present invention and the mounting ring.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is an exploded view between the connection ring and the inspection well body of the present invention.

Fig. 5 is a partially enlarged view of a portion B in fig. 4.

FIG. 6 is a top view of the fall arrest net of the present invention connected to a mounting ring.

Fig. 7 is a schematic view of a connection structure of the reserve rope of the present invention.

In the figure, 1, an inspection well body; 11. a chute; 12. a clamping groove; 121. a second guide groove; 13. a mating groove; 14. a second elastic member; 15. pressing the plate; 151. a first guide groove; 16. a baffle plate; 17. a waterproof cover; 18. hooking; 19. a placement groove; 191. a handle; 2. a mounting ring; 21. mounting grooves; 211. a slider; 212. a first elastic member; 213. a limiting ring; 2131. an arc-shaped slot; 214. pulling a rope; 22. a sleeve; 23. an arc-shaped clamping block; 231. an external thread; 232. anti-skid insections; 233. a limiting block; 24. a limit nut; 25. a bit block; 251. a guide ball; 3. the anti-falling net; 31. connecting ropes; 32. a standby rope; 321. and (5) hanging a ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in figure 1, the municipal road inspection well with the protection device comprises an inspection well body 1, the cross section of the inspection well body 1 is circular, the protection device is arranged at a position, close to an inspection well opening, of the inspection well body 1, the protection device comprises a mounting ring 2 and an anti-falling net 3, the mounting ring 2 is arranged on the inner side wall of the inspection well body 1, the anti-falling net 3 is arranged on the inner ring of the mounting ring 2, and the effect that people fall on the anti-falling net 3 after falling into the inspection well body 1 is achieved, and the protection effect is achieved.

One side of the mounting ring 2 facing the inspection well mouth is relatively provided with a placing groove 19, and handles 191 are hinged in the placing groove 19, so that the mounting ring 2 is convenient to rotate and lift.

As shown in fig. 2 and 3, the inner ring of the mounting ring 2 is provided with four mounting grooves 21 at intervals along the circumferential direction, the distance between every two mounting grooves 21 is equal, each mounting groove 21 is internally provided with a sliding block 211, a pulling rope 214, a limiting ring 213 and a first elastic member 212, the first elastic member 212 is a spring, the sliding block 211 is slidably mounted in the mounting groove 21, the outer ring of the limiting ring 213 is fixedly mounted at the notch of the mounting groove 21, one end of the pulling rope 214 is fixed at the sliding block 211, the other end of the pulling rope extends out of the mounting groove 21 towards the inner ring direction of the limiting ring 213, the first elastic member 212 is sleeved on the pulling rope 214, one end of the first elastic member 212 is fixed at the groove bottom of the mounting groove 21, and the other end of the first elastic member 212 is fixed at the limiting ring 213, so that.

Four connecting ropes 31 are arranged at the edge of the anti-falling net 3 at equal intervals in the circumferential direction, the positions of the connecting ropes 31 correspond to the positions of the pull ropes 214, one end of each pull rope 214, which extends out of the mounting groove 21, is connected with a sleeve 22, one end of each sleeve 22, which is far away from the corresponding opening of the pull rope 214, one end of each sleeve 22, which is located at the corresponding opening of each sleeve 22, is provided with four arc-shaped clamping blocks 23 at intervals in the circumferential direction, one end of each arc-shaped clamping block 23 is elastically connected with the corresponding sleeve 22, the other end of each arc-shaped clamping block 23 extends in the direction far away from the corresponding sleeve 22, namely, the four arc-shaped clamping blocks 23 can be close to each other, the inner arc surfaces of the four arc-shaped clamping blocks 23 are all arranged inwards, a clamping cavity is defined by the four arc-shaped clamping blocks 23, the connecting ropes 31 penetrate through the clamping cavity and extend, thereby after connecting rope 31 and stretching into the centre gripping chamber, stop nut 24 and external screw thread 231 mutual adaptation even be an arc grip block 23 and be close to each other to reached the dismantlement formula connection to connecting rope 31.

The position that the sleeve 22 is kept away from to the lateral wall of every arc-shaped clamping block 23 all is equipped with stopper 233, and stopper 233 and external screw thread 231 butt to the distance of screwing of limit nut 24 has been restricted, and guaranteed that limit nut 24's screw thread can mesh with external screw thread 231 completely.

The intrados of every arc grip block 23 all is equipped with anti-skidding insection 232, and the array direction of anti-skidding insection 232 is unanimous with the extending direction of arc grip block 23 to increase the frictional force of arc grip block 23 and connection rope 31, improved promptly and prevented weighing down the installation stability of net 3.

The inner ring of the limiting ring 213 is provided with an arc-shaped groove 2131 on one side far away from the inspection well opening, and when the anti-falling net 3 is subjected to a vertically downward force, the contact position of the pull rope 214 and the limiting ring 213 corresponds to the position of the arc-shaped groove 2131, so that the pull rope 214 and the limiting ring 213 are in sliding contact, and the pull rope 214 is prevented from being easily broken.

As shown in fig. 2 and 4, the lateral wall of collar 2 is equipped with screens piece 25 relatively, screens piece 25's appearance is the arc, the intrados face of screens piece 25 and the outside wall adaptation of spacing ring 213, inspection shaft mouth edgewise edge is equipped with two spout 11 relatively, spout 11 is towards vertical downwardly extending, the extended length of two spout 11 is unanimous, spout 11 supplies screens piece 25 to slide along vertical direction, the tank bottom of spout 11 has screens groove 12 along horizontal circumference extension, the extending direction homogeneous phase of two screens grooves 12 is the same, screens piece 25 and screens groove 12 looks adaptation, thereby the installation to collar 2 has been reached.

The tank bottom of spout 11 is fixed with second elastic component 14, second elastic component 14 is the spring, second elastic component 14 keeps away from spout 11 tank bottom one end and is fixed with and supports clamp plate 15, spout 11 tank bottom is equipped with cooperation groove 13, cooperation groove 13 is along vertical downwardly extending, cooperation groove 13 is located spout 11 one side near screens groove 12, it is provided with baffle 16 to slide in cooperation groove 13, the one end of baffle 16 slides in cooperation groove 13, the other end is fixed in the one side that supports clamp plate 15 and be close to second elastic component 14, thereby reached and restricted screens inslot 12 to screens piece 25.

The second elastic part 14 is sleeved with a folding type waterproof cover 17, one end of the waterproof cover 17 is fixed at the bottom of the sliding groove 11, the other end of the waterproof cover 17 is fixed on the pressing plate 15, namely the waterproof cover 17 can slide in the sliding groove 11 along with the pressing plate 15 to be folded, so that the second elastic part 14 is prevented from rusting when being contacted with water, and the next use is influenced.

As shown in fig. 5 and 6, a guiding ball 251 is disposed on one side of the detent block 25 close to the bottom of the sliding slot 11, a first guiding slot 151 adapted to the guiding ball 251 is disposed on one side of the pressing plate 15 close to the detent block 25, a second guiding slot 121 communicated with the first guiding slot 151 is disposed on the bottom of the detent slot 12, and the extending directions of the first guiding slot 151 and the second guiding slot 121 are both the same as the extending direction of the detent slot 12, so as to guide the detent block 25 and reduce friction between the detent block 25 and the side wall of the detent slot 12.

As shown in fig. 7, four hooks 18 are arranged on the side wall of the inner ring of the mounting ring 2 at intervals, one hook 18 is arranged between every two mounting grooves 21, four spare ropes 32 are arranged at the edge of the anti-falling net 3 at intervals along the circumferential direction, a hanging ring 321 is arranged at one end of each spare rope 32 far away from the anti-falling net 3, and the hanging ring 321 is matched with the hook 18; when the sliding block 211 slides to the maximum distance toward the limit ring 213, the standby rope 32 is in a pulled-up state; when the sliding block 211 is in the sliding state, the backup rope 32 is in the slack state, so that the buffering effect can be ensured, and the anti-falling net 3 can be prevented from being pulled by the backup rope 32 in case of breakage of the pulling rope 214 or the connecting rope 31, so that the safety is improved.

The implementation principle of the embodiment is as follows: firstly, hanging the hanging ring 321 on the standby rope 32 into the hook 18, then penetrating the connecting rope 31 into the clamping cavity and extending into the sleeve 22, then screwing the limiting nut 24 to enable the limiting nut 24 to be matched with the external thread 231, and screwing the limiting nut 24 to be abutted with the limiting block 233 so as to stably install the anti-falling net 3; then, the handle 191 is grasped by a hand, the clamping block 25 corresponds to the abutting plate 15, the guide balls 251 correspond to the first guide grooves 151, then the clamping block 25 is pressed downwards vertically, when the first guide grooves 151 are communicated with the second guide grooves 121, the mounting ring 2 is rotated, the clamping block 25 is rotated into the clamping groove 12, and after the clamping block 25 is completely rotated into the clamping groove 12, the abutting plate 15 drives the baffle plate 16 to slide upwards vertically due to the elastic recovery of the second elastic piece 14, so that the notch of the clamping groove 12 is sealed; when a person falls on the anti-falling net 3, the pull rope 214 can pull the sliding block 211 to slide in the mounting groove 21, so that the buffering effect is achieved; when the anti-falling net 3 needs to be replaced, the connecting rope 31 can be taken out by unscrewing the limiting nut 24 so as to replace the anti-falling net 3; when the mounting ring 2 needs to be disassembled, the pressing plate 15 is compressed, and then the handle 191 rotates the mounting ring 2 to enable the clamping block 25 to rotate to the pressing plate 15, so that the mounting ring 2 can be disassembled for replacement.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.