Improved fall arrest device

Abstract

The application discloses an improved anti-falling device and belongs to the field of municipal infrastructure safety devices. The anti-falling device comprises a ring plate base, a plurality of anchoring rods are installed on the ring plate base, the anchoring rods are uniformly arranged on the outer circumferential surface of the ring plate base, the anchoring rods are arranged in a manhole, a plurality of hanging rods are installed on the top surface of the ring plate base, the hanging rods are uniformly arranged around the axis of the ring plate base, an anti-falling plate is arranged on the top surface of the ring plate base, a plurality of mesh holes are formed in the anti-falling plate, the hanging rods can abut against the inner walls of the mesh holes at the edges of the anti-falling plate, and a fixing assembly for fixing the ring plate base and the anchoring rods is arranged on the ring plate base. The application has the effect of improving the stability of the anti-falling device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of municipal infrastructure safety devices, in particular to an improved anti-falling device. BACKGROUND

[0002] At present, for municipal and industrial inspection wells, the inspection well anti-falling device is an important protection device. The inspection well anti-falling device mainly prevents pedestrians from falling into the inspection well in the case of missing inspection well covers, protecting the safety of pedestrians; secondly, it prevents road debris from falling into the well to ensure normal pipeline drainage.

[0003] In related technology, the Chinese utility model patent with publication number CN216304864U discloses an inspection well anti-falling device, which comprises a support frame, an anti-falling net, a plurality of line locks and a connecting device. Among them, the anti-falling net is connected to the support frame and comprises a plurality of net lines, which are arranged to define a mesh. A plurality of line locks are respectively connected to the intersection of each net support frame line and can move relative to the net line to adjust the size of the mesh. The connecting device is connected with the support frame.

[0004] For the above-mentioned related technology, the inventors believe that the inspection well wall is installed with a connecting device, which fixes and connects the anti-falling net through the connecting device. The connecting device accessories are prone to aging and easy to fall off. At the same time, the connecting device is anchored on the well wall by artificial means, and the quality is difficult to control. SUMMARY

[0005] In order to improve the stability of the anti-falling device, the present application provides an improved anti-falling device.

[0006] The improved anti-falling device provided by the present application adopts the following technical scheme:

[0007] An improved anti-falling device, comprising a ring plate base, a plurality of anchor rods are installed on the ring plate base, the anchor rods are uniformly arranged on the outer circumferential surface of the ring plate base, the anchor rods are arranged in the inspection well, a plurality of hanging rods are installed on the top surface of the ring plate base, the hanging rods are uniformly arranged around the axis of the ring plate base, an anti-falling plate is arranged on the top surface of the ring plate base, a plurality of mesh holes are formed in the anti-falling plate, the hanging rods can abut against the inner wall of the mesh hole at the edge of the anti-falling plate, and a fixing assembly for fixing the ring plate base and the anchor rods is arranged on the ring plate base.

[0008] Through the above technical scheme, the operator embeds the anchoring rod into the inspection well, then the operator fixes and connects the ring plate base with the inspection well by using the fixing assembly, then the operator places the anti-falling plate on the ring plate base, inserts the hanging rod into the mesh hole, the setting of the hanging rod restrains the horizontal displacement of the anti-falling plate, the ring plate base and the well wall of the inspection well form an integral whole, the stability of the ring plate base and the inspection well is improved, the hanging rod is firm and reliable, and the anti-falling plate can simultaneously block leaves and other dirt from entering the well chamber.

[0009] Preferably, the fixing assembly comprises a connecting rod fixedly connected to the anchoring rod, a fixing rod penetrating the connecting rod, a fixing slot for plug-in cooperation with the fixing rod is arranged on the connecting rod, the fixing rod penetrates the ring plate base, and a moving assembly for moving the fixing rod is arranged on the ring plate base.

[0010] Through the above technical scheme, the operator embeds the anchoring rod and the connecting rod into the inner wall of the inspection well, then the operator places the ring plate base into the inspection well, and then the operator drives the fixing rod to move by using the moving assembly, the fixing rod is inserted into the fixing slot of the connecting rod, so that the ring plate base and the inner wall of the inspection well are locked, the ring plate base and the well wall of the inspection well form an integral whole, the stability of the ring plate base and the inspection well is improved, and the hanging rod is firm and reliable.

[0011] Preferably, the moving assembly comprises a bevel gear ring penetrating the ring plate base, a moving rod fixedly connected to the bevel gear ring, a bevel on the fixing rod, the bevel on the fixing rod is engaged with the bevel gear ring, the moving rod penetrates the ring plate base, and a moving slot for sliding cooperation with the moving rod is arranged on the ring plate base.

[0012] Through the above technical scheme, the operator drives the moving rod to move, the moving rod drives the bevel gear ring to rotate around the axis of the ring plate base, the rotation of the bevel gear ring drives the fixing rod to move, so that the operator can conveniently install and dismount the ring plate base.

[0013] Preferably, a fixing sliding slot for sliding cooperation with the fixing rod is arranged on the ring plate base, a fixing spring is fixedly connected to the fixing rod, and an end of the fixing spring away from the fixing rod is fixedly connected to an inner end surface of the fixing sliding slot.

[0014] By adopting the technical scheme, the operator rotates the helical tooth ring by moving the rod, the helical tooth ring drives the fixed rod to move, the movement of the fixed rod makes the fixed spring in a compressed state, then the operator puts the ring plate base into the inspection well, the outer circumferential surface of the ring plate base slides on the inner wall of the inspection well, at this time the fixed rod slides on the inner wall of the inspection well, the operator continues to move the ring plate base, when the fixed rod moves to the position of the fixed slot, the fixed rod is inserted into the fixed slot under the action of the fixed spring, thereby facilitating the operator to install.

[0015] Preferably, an arc-shaped plate is arranged on the ring plate base, the arc-shaped plate is arranged on the side of the hanging rod away from the inner wall of the inspection well, an arc-shaped slot for plug-in cooperation with the arc-shaped plate is arranged on the side of the hanging rod close to the inner wall of the inspection well, and a limiting plate is fixedly connected to the arc-shaped plate.

[0016] By adopting the technical scheme, the operator places the anti-falling plate on the ring plate base, then moves the limiting plate, the movement of the limiting plate drives the arc-shaped plate to move, the arc-shaped plate is inserted into the arc-shaped slot, thereby locking the anti-falling plate, and the stability of the anti-falling plate is improved.

[0017] Preferably, a locking spring is fixedly connected to the arc-shaped plate, an arc-shaped sliding slot for sliding cooperation with the arc-shaped plate is arranged on the ring plate base, the end of the locking spring away from the arc-shaped plate is fixedly connected to the inner end surface of the arc-shaped sliding slot, and an adjusting assembly for fixing the arc-shaped plate is arranged on the ring plate base.

[0018] By adopting the technical scheme, the operator moves the limiting plate, the movement of the limiting plate makes the arc-shaped plate move, the movement of the arc-shaped plate makes the locking spring in a compressed state, then the operator fixes the arc-shaped plate by using the adjusting assembly; when the anti-falling plate is installed, the operator releases the fixing state of the arc-shaped plate by using the adjusting assembly, the arc-shaped plate is inserted into the arc-shaped slot under the action of the locking spring, thereby locking the anti-falling plate, and the operator is facilitated to use.

[0019] Preferably, the adjusting assembly comprises an adjusting gear rotatably arranged in the ring plate base and an adjusting rod arranged on the adjusting gear, the adjusting rod is fixedly connected to the adjusting gear, the arc-shaped plate is provided with a tooth, the adjusting gear is engaged with the tooth on the arc-shaped plate, and a control assembly for fixing the adjusting rod is arranged on the ring plate base.

[0020] By adopting the above technical scheme, the operator moves the arc-shaped plate through the limiting plate, the arc-shaped plate moving drives the adjusting gear to rotate, the adjusting gear rotating drives the adjusting rod to rotate, at this time the locking spring is in a compressed state, the operator fixes the adjusting rod by using the control assembly, so as to fix the arc-shaped plate; the operator releases the fixed state of the adjusting rod by using the control assembly, at this time the arc-shaped plate moves under the action of the locking spring, so as to lock the anti-falling plate, which is convenient for the operator to use.

[0021] Preferably, the control assembly comprises a ratchet gear fixedly arranged on the adjusting rod, and a ratchet plate penetrating through the ring plate base, the ratchet gear is engaged with the ratchet plate, the ring plate base is provided with a control sliding groove for sliding cooperation with the ratchet plate, the ratchet plate is fixedly connected with a control spring, the control spring is fixedly connected with an inner end surface of the control sliding groove, and the ring plate base is provided with a driving assembly for driving the ratchet plate to move away from the ratchet gear.

[0022] By adopting the above technical scheme, the operator moves the arc-shaped plate through the limiting plate, the arc-shaped plate moving drives the adjusting gear to rotate, the adjusting gear rotating drives the adjusting rod to rotate, at this time the locking spring is in a compressed state, the operator fixes the adjusting rod by using the control assembly, so as to fix the arc-shaped plate; the operator releases the fixed state of the adjusting rod by using the control assembly, at this time the arc-shaped plate moves under the action of the locking spring, so as to lock the anti-falling plate, which is convenient for the operator to use.

[0023] Preferably, the driving assembly comprises a suspension rope fixedly connected with the ratchet plate, and a driving pulley rotatably installed on the ring plate base, the suspension rope is wound around the driving pulley, and the suspension rope is installed on the hanging rod by passing through the driving pulley.

[0024] By adopting the above technical scheme, the operator will lock the anti-falling plate on the hanging rod, when someone falls on the anti-falling plate, the anti-falling plate deforms to drive the hanging rod to move, the hanging rod moving drives the suspension rope to move, the suspension rope moving drives the ratchet plate to move, the ratchet plate moving away from the ratchet gear makes the arc-shaped plate lock the anti-falling plate under the action of the locking spring, which improves the stability of the anti-falling plate.

[0025] Preferably, the hanging rod is fixedly connected with a guide plate, the suspension rope is fixedly connected with the guide plate, the ring plate base is provided with a guide sliding groove for sliding cooperation with the guide plate, an inner top surface of the guide sliding groove is provided with a sliding groove for sliding cooperation with the hanging rod, and the guide plate is fixedly connected with a reset spring, an end of the reset spring away from the guide plate is fixedly connected with an inner end surface of the guide sliding groove.

[0026] By adopting the technical scheme, the operator buckles the anti-falling plate on the hanging rod, when someone falls on the anti-falling plate, the anti-falling plate deforms to drive the hanging rod to move, the hanging rod moves to drive the guide plate to move, at this time, the reset spring is in a compressed state, when the weight of the anti-falling plate is removed, the guide plate resets under the action of the reset spring to drive the hanging rod to reset, so that the ratchet plate meshes with the ratchet gear, and the operator can conveniently recycle.

[0027] To sum up, the present application has at least one of the following beneficial technical effects:

[0028] 1. The operator pre-buries the anchoring rod into the inspection well, then the operator fixes and connects the ring plate base with the inspection well by using the fixing assembly, then the operator places the anti-falling plate on the ring plate base, and inserts the hanging rod into the mesh hole, the setting of the hanging rod inhibits the horizontal displacement of the anti-falling plate, the ring plate base is integrated with the well wall of the inspection well, the stability of the ring plate base and the inspection well is improved, the hanging rod is firm and reliable, and the anti-falling plate can simultaneously block leaves and other dirt from entering the well chamber;

[0029] 2. The operator places the anti-falling plate on the ring plate base, then the operator moves the limiting plate, the limiting plate moves to drive the arc-shaped plate to move, the arc-shaped plate is inserted into the arc-shaped slot, so that the anti-falling plate is buckled and locked, and the stability of the anti-falling plate is improved.

[0030] 3. The operator buckles the anti-falling plate on the hanging rod, when someone falls on the anti-falling plate, the anti-falling plate deforms to drive the hanging rod to move, the hanging rod moves to drive the guide plate to move, at this time, the reset spring is in a compressed state, when the weight of the anti-falling plate is removed, the guide plate resets under the action of the reset spring to drive the hanging rod to reset, so that the ratchet plate meshes with the ratchet gear, and the operator can conveniently recycle. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic view of an improved anti-falling device according to an embodiment of the present application.

[0032] Figure 2 is a structural schematic view of an improved anti-falling device according to an embodiment of the present application.

[0033] Figure 3 is Figure 2 is an enlarged view of position A in FIG.

[0034] Figure 4 is a structural schematic view of a ring plate base according to an embodiment of the present application.

[0035] Figure 5 is Figure 4 is an enlarged view of position B in FIG.

[0036] MARKS:

[0037] 1, ring plate base; 11, anchor rod; 12, hanging rod; 13, anti-falling plate; 131, mesh; 14, arc plate; 141, arc slot; 142, limiting plate; 143, locking spring; 144, arc sliding slot; 2, fixed assembly; 21, connecting rod; 22, fixed rod; 23, fixed slot; 24, fixed sliding slot; 25, fixed spring; 3, moving assembly; 31, helical tooth ring; 32, moving rod; 33, moving slot; 4, adjusting assembly; 41, adjusting gear; 42, adjusting rod; 5, control assembly; 51, ratchet gear; 52, ratchet plate; 53, control sliding slot; 54, control spring; 6, drive assembly; 61, suspension rope; 62, drive pulley; 63, guide plate; 64, guide sliding slot; 65, sliding slot; 66, return spring. DETAILED DESCRIPTION

[0038] The following description will be made in conjunction with the accompanying drawings. Figures 1-5 The application is further described in detail.

[0039] The embodiment of the application discloses an improved anti-falling device. Referring to Figure 1 , the anti-falling device comprises a ring plate base 1, the ring plate base 1 is circular and horizontally arranged, the ring plate base 1 is arranged on the inner wall of the inspection well, and an anti-falling plate 13 is arranged on the ring plate base 1. The anti-falling plate 13 is circular and horizontally arranged, and a plurality of meshes 131 are formed in the anti-falling plate 13.

[0040] Referring to Figure 1 , Figure 2 The ring plate base 1 is provided with a hanging rod 12, the hanging rod 12 is vertically arranged and arranged on the top surface of the ring plate base 1, and a plurality of hanging rods 12 are arranged uniformly around the axis of the ring plate base 1, the hanging rod 12 penetrates through the mesh 131 of the anti-falling plate 13 and abuts against the inner wall of the mesh 131. The operator places the anti-falling plate 13 on the ring plate base 1 and inserts the hanging rod 12 into the mesh 131, and the arrangement of the hanging rod 12 suppresses the horizontal displacement of the anti-falling plate 13, so that the ring plate base 1 and the well wall of the inspection well form an integral whole, the stability of the ring plate base 1 and the inspection well is improved, the hanging rod 12 is firm and reliable, and the anti-falling plate 13 can simultaneously prevent leaves and other pollutants from entering the well chamber.

[0041] Referring to Figure 2 , Figure 3The inner wall of the inspection well is provided with anchor rods 11 vertically penetrating the inner wall of the inspection well, and the anchor rods 11 are uniformly arranged around the ring plate base 1. The ring plate base 1 is provided with a fixing assembly 2 for fixing the ring plate base 1 and the anchor rods 11, and the fixing assembly 2 comprises a connecting rod 21 and a fixing rod 22. The connecting rod 21 is horizontally arranged, and a plurality of connecting rods 21 are provided, one-to-one corresponding to the anchor rods 11. The connecting rod 21 is fixedly connected with the anchor rod 11, penetrates the inner wall of the inspection well, and the end of the connecting rod 21 penetrating the inner wall of the inspection well abuts against the side wall of the ring plate base 1.

[0042] Referring to Figure 3 , the fixing rod 22 is horizontally arranged, penetrates the ring plate base 1, and a plurality of fixing rods 22 are provided, one-to-one corresponding to the connecting rods 21. The end of the fixing rod 22 penetrating the ring plate base 1 penetrates into the connecting rod 21. The connecting rod 21 is provided with a fixing slot 23, and the inner side wall of the fixing slot 23 is in sliding fit with the outer side wall of the connecting rod 21.

[0043] Referring to Figure 3 , the ring plate base 1 is provided with a fixing sliding groove 24, and a plurality of fixing sliding grooves 24 are provided, one-to-one corresponding to the fixing rods 22. The inner side wall of the fixing sliding groove 24 is in sliding fit with the outer side wall of the fixing rod 22. The fixing rod 22 is provided with a fixing spring 25, which is horizontally arranged and fixedly connected with the fixing rod 22. The end of the fixing spring 25 away from the fixing rod 22 is fixedly connected with the inner end face of the fixing sliding groove 24.

[0044] Referring to Figure 4 , Figure 5 , the ring plate base 1 is provided with a fixing sliding groove 24, and a plurality of fixing sliding grooves 24 are provided, one-to-one corresponding to the fixing rods 22. The inner side wall of the fixing sliding groove 24 is in sliding fit with the outer side wall of the fixing rod 22. The fixing rod 22 is provided with a fixing spring 25, which is horizontally arranged and fixedly connected with the fixing rod 22. The end of the fixing spring 25 away from the fixing rod 22 is fixedly connected with the inner end face of the fixing sliding groove 24.

[0044] Referring to Figure 4 , Figure 5 , the ring plate base 1 is provided with a fixing sliding groove 24, and a plurality of fixing sliding grooves 24 are provided, one-to-one corresponding to the fixing rods 22. The inner side wall of the fixing sliding groove 24 is in sliding fit with the outer side wall of the fixing rod 22. The fixing rod 22 is provided with a fixing spring 25, which is horizontally arranged and fixedly connected with the fixing rod 22. The end of the fixing spring 25 away from the fixing rod 22 is fixedly connected with the inner end face of the fixing sliding groove 24.

[0044] Referring to Figure 4 , Figure 5 , the ring plate base 1 is provided with a fixing sliding groove 24, and a plurality of fixing sliding grooves 24 are provided, one-to-one corresponding to the fixing rods 22. The inner side wall of the fixing sliding groove 24 is in sliding fit with the outer side wall of the fixing rod 22. The fixing rod 22 is provided with a fixing spring 25, which is horizontally arranged and fixedly connected with the fixing rod 22. The end of the fixing spring 25 away from the fixing rod 22 is fixedly connected with the inner end face of the fixing sliding groove 24.

[0044] Referring to Figure 4 , Figure 5 , the ring plate base 1 is provided with a fixing sliding groove 24, and a plurality of fixing sliding grooves 24 are provided, one-to-one corresponding to the fixing rods 22. The inner side wall of the fixing sliding groove 24 is in sliding fit with the outer side wall of the fixing rod 22. The fixing rod 22 is provided with a fixing spring 25, which is horizontally arranged and fixedly connected with the fixing rod 22. The end of the fixing spring 25 away from the fixing rod 22 is fixedly connected with the inner end face of the fixing sliding groove 24.

[0044] Referring to Figure 4 , Figure 5 , the ring plate base 1 is provided with a fixing sliding groove 24, and a plurality of fixing sliding grooves 24 are provided, one-to-one corresponding to the fixing rods 22. The inner side wall of the fixing sliding groove 24 is in sliding fit with the outer side wall of the fixing rod 22. The fixing rod 22 is provided with a fixing spring 25, which is horizontally arranged and fixedly connected with the fixing rod 22. The end of the fixing spring 25 away from the fixing rod 22 is fixedly connected with the inner end face of the fixing sliding groove 24.

[0045] The operator embeds the anchoring rod 11 and the connecting rod 21 into the inner wall of the inspection well, then moves the oblique tooth ring 31 by moving the rod 32, the movement of the oblique tooth ring 31 drives the fixed rod 22 to move, the movement of the fixed rod 22 makes the fixed spring 25 in a compressed state, then the operator puts the ring plate base 1 into the inspection well, at this time, the fixed rod 22 slides on the inner wall of the inspection well, when the fixed rod 22 moves to the position of the fixed slot 23, the fixed rod 22 is inserted into the fixed slot 23 under the action of the fixed spring 25, so as to lock the ring plate base 1 and the inner wall of the inspection well, so that the ring plate base 1 and the well wall of the inspection well form an integral whole, thereby improving the stability of the ring plate base 1 and the inspection well and ensuring that the hanging rod 12 is firm and reliable.

[0046] With reference to Figure 3 The arc-shaped plate 14 is provided on the ring plate base 1 and corresponds to the hanging rod 12 in a one-to-one manner, the arc-shaped plate 14 is arranged on the side of the hanging rod 12 away from the anchoring rod 11, the arc-shaped plate 14 is provided on the ring plate base 1, and the end portion of the arc-shaped plate 14 that penetrates out of the ring plate base 1 is fixedly connected with a limiting plate 142. The side of the hanging rod 12 close to the anchoring rod 11 is provided with an arc-shaped slot 141, the arc-shaped slot 141 is formed on the ring plate base 1, and the inner side wall of the arc-shaped slot 141 is in sliding fit with the outer side wall of the arc-shaped plate 14.

[0047] With reference to Figure 3 An arc-shaped sliding groove 144 is formed on the ring plate base 1, the inner side wall of the arc-shaped sliding groove 144 is in sliding fit with the outer side wall of the arc-shaped plate 14, and a locking spring 143 is arranged on the inner end face of the arc-shaped sliding groove 144. The locking spring 143 is arranged in the arc-shaped sliding groove 144, the locking spring 143 is fixedly connected with the arc-shaped plate 14, and the end portion of the locking spring 143 away from the arc-shaped plate 14 is fixedly connected with the inner end face of the arc-shaped sliding groove 144.

[0048] With reference to Figure 3 An adjusting assembly 4 for fixing the arc-shaped plate 14 is arranged on the ring plate base 1, the adjusting assembly 4 comprises an adjusting gear 41 and an adjusting rod 42. The adjusting gear 41 is vertically arranged, the adjusting gear 41 is rotatably arranged on the ring plate base 1, the arc-shaped plate 14 is provided with a toothed pattern, and the adjusting gear 41 is in mesh with the toothed pattern on the arc-shaped plate 14. The adjusting rod 42 is horizontally arranged, the adjusting rod 42 penetrates through the ring plate base 1, the adjusting rod 42 is rotatably connected with the ring plate base 1, and the adjusting gear 41 is fixedly sleeved on the adjusting rod 42.

[0049] With reference to Figure 5The ring plate base 1 is equipped with a control assembly 5 for fixing the adjusting rod 42. The control assembly 5 includes a ratchet 51 and a ratchet plate 52. The ratchet 51 is vertically arranged and mounted on the adjusting rod 42, and is fixedly connected to the adjusting rod 42. The ratchet plate 52 is vertically arranged and passes through the ring plate base 1, meshing with the ratchet 51. The ring plate base 1 is provided with a control groove 53.

[0050] Reference Figure 3 , Figure 5 The control groove 53 is horizontally opened, and its inner sidewall slides and engages with the outer sidewall of the ratchet plate 52. A control spring 54 is provided on the inner end face of the control groove 53. The control spring 54 is horizontally set and located inside the control groove 53. The control spring 54 is fixedly connected to the ratchet plate 52, and the end of the control spring 54 away from the ratchet plate 52 is fixedly connected to the inner end face of the control groove 53.

[0051] Reference Figure 3 , Figure 5 A drive assembly 6 is provided on the ring plate base 1 to drive the ratchet plate 52 away from the ratchet gear 51. The drive assembly 6 includes a suspension rope 61 and a drive pulley 62. The suspension rope 61 passes through the ring plate base 1 and is fixedly connected to the ratchet plate 52. A guide plate 63 is provided on the end of the suspension rope 61 away from the ratchet plate 52. The guide plate 63 is rectangular and passes through the ring plate base 1. The guide plate 63 is fixedly connected to the hanging rod 12.

[0052] Reference Figure 3 The ring plate base 1 has a guide groove 64 for sliding cooperation with the guide plate 63. The inner top surface of the guide groove 64 has a sliding groove 65 for sliding cooperation with the hanging rod 12. The sliding groove 65 is connected to the top surface of the ring plate base 1. A return spring 66 is provided on the guide plate 63. The return spring 66 is horizontally positioned and fixedly connected to the guide plate 63. The end of the return spring 66 away from the guide plate 63 is fixedly connected to the inner end face of the guide groove 64.

[0053] Reference Figure 3 , Figure 5 The drive pulley 62 is mounted on the ring plate base 1 and is rotatably mounted on the ring plate base 1. The suspension rope 61 is wound around the drive pulley 62.

[0054] The operator buckles the anti-falling plate 13 on the hanging rod 12, when someone falls on the anti-falling plate 13, the anti-falling plate 13 deforms to drive the hanging rod 12 to move, the hanging rod 12 drives the suspension rope 61 to move through the guide plate 63, at this time, the reset spring 66 is in the compressed state, the suspension rope 61 makes the ratchet gear 51 release the fixed state through the ratchet plate 52, and then the arc-shaped plate 14 locks the anti-falling plate 13 under the action of the locking spring 143, so that the stability of the anti-falling plate 13 is improved; when the weight of the anti-falling plate 13 is removed, the hanging rod 12 is reset under the action of the reset spring 66, the operator moves the arc-shaped plate 14 through the limiting plate 142, the arc-shaped plate 14 is driven to slide on the tooth back of the ratchet plate 52, so that the arc-shaped plate 14 is fixed, and the operator can use it circularly.

[0055] The implementation principle of the improved anti-falling device is that the operator pre-buries the anchoring rod 11 and the connecting rod 21 into the inner wall of the inspection well, then the operator drives the fixing rod 22 to move through the moving rod 32, and then the operator puts the ring plate base 1 into the inspection well, when the fixing rod 22 moves to the position of the fixed slot 23, the fixing rod 22 is inserted into the fixed slot 23 under the action of the fixing spring 25, so that the ring plate base 1 is locked with the inner wall of the inspection well, the ring plate base 1 and the inspection well are integrated, the stability of the ring plate base 1 and the inspection well is improved, and the hanging rod 12 is firm and reliable.

[0056] When someone falls on the anti-falling plate 13, the anti-falling plate 13 deforms to drive the hanging rod 12 to move, the hanging rod 12 releases the fixed state of the arc-shaped plate 14, and then the arc-shaped plate 14 locks the anti-falling plate 13 under the action of the locking spring 143, so that the stability of the anti-falling plate 13 is improved; when the weight of the anti-falling plate 13 is removed, the hanging rod 12 is reset under the action of the reset spring 66, the operator moves the arc-shaped plate 14 through the limiting plate 142, the locking state of the anti-falling plate 13 is released, and the anti-falling plate 13 is convenient to replace, and the operator can use it circularly.

[0057] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. An improved fall arrest device, comprising a ring plate base (1), characterized in that: Multiple anchor rods (11) are installed on the ring plate base (1). The anchor rods (11) are evenly arranged on the outer circumferential surface of the ring plate base (1). The anchor rods (11) are set inside the inspection well. Multiple hanging rods (12) are installed on the top surface of the ring plate base (1). The hanging rods (12) are evenly arranged around the axis of the ring plate base (1). A fall arrestor plate (13) is provided on the top surface of the ring plate base (1). Multiple mesh holes (131) are opened on the fall arrestor plate (13). The hanging rods (12) can abut against the inner wall of the mesh holes (131) at the edge of the fall arrestor plate (13). A fixing component (2) is provided between the ring plate base (1) and the anchor rods (11). The fixing component (2) includes a connecting rod (21) fixedly connected to the anchor rod (11) and a fixing rod (22) passing through the connecting rod (21). The connecting rod (21) has a fixing slot (23) for inserting and cooperating with the fixing rod (22). The fixing rod (22) passes through the ring plate base (1). The ring plate base (1) is provided with a moving component (3) for moving the fixing rod (22). The moving component (3) includes a helical toothed ring (31) passing through the ring plate base (1) and a moving rod (32) fixedly connected to the helical toothed ring (31). The fixed rod (22) is provided with helical teeth, and the helical teeth on the fixed rod (22) mesh with the helical toothed ring (31). The moving rod (32) passes through the ring plate base (1), and the ring plate base (1) is provided with a moving groove (33) for sliding cooperation with the moving rod (32). The ring plate base (1) is provided with a fixed groove (24) for sliding cooperation with the fixed rod (22). A fixed spring (25) is fixedly connected to the fixed rod (22). The end of the fixed spring (25) away from the fixed rod (22) is fixedly connected to the inner end face of the fixed groove (24).

2. The improved fall arrestor according to claim 1, characterized in that: An arc-shaped plate (14) is provided on the ring plate base (1). The arc-shaped plate (14) is provided on the side of the hanging rod (12) away from the inner wall of the inspection well. An arc-shaped slot (141) for inserting and cooperating with the arc-shaped plate (14) is provided on the side of the hanging rod (12) close to the inner wall of the inspection well. A limit plate (142) is fixedly connected to the arc-shaped plate (14).

3. An improved fall arrest device according to claim 2, characterized in that: A locking spring (143) is fixedly connected to the arc plate (14), and an arc groove (144) is provided on the ring plate base (1) for sliding cooperation with the arc plate (14). The end of the locking spring (143) away from the arc plate (14) is fixedly connected to the inner end face of the arc groove (144). An adjustment assembly (4) for fixing the arc plate (14) is provided on the ring plate base (1).

4. An improved fall arrest device according to claim 3, characterized in that: The adjustment assembly (4) includes an adjustment gear (41) rotatably mounted in the ring plate base (1) and an adjustment rod (42) passing through the adjustment gear (41). The adjustment rod (42) is fixedly connected to the adjustment gear (41). The arc plate (14) is provided with teeth. The adjustment gear (41) meshes with the teeth on the arc plate (14). The ring plate base (1) is provided with a control assembly (5) for fixing the adjustment rod (42).

5. An improved fall arrest device according to claim 4, characterized in that: The control component (5) includes a ratchet (51) fixedly sleeved on the adjusting rod (42) and a ratchet plate (52) passing through the ring plate base (1). The ratchet (51) meshes with the ratchet plate (52). The ring plate base (1) is provided with a control groove (53) for sliding cooperation with the ratchet plate (52). A control spring (54) is fixedly connected to the ratchet plate (52). The control spring (54) is fixedly connected to the inner end face of the control groove (53). The ring plate base (1) is provided with a drive component (6) for driving the ratchet plate (52) to move away from the ratchet (51).

6. An improved fall arrest device according to claim 5, characterized in that: The drive assembly (6) includes a suspension rope (61) fixedly connected to the ratchet plate (52) and a drive pulley (62) rotatably mounted on the ring plate base (1). The suspension rope (61) is wound around the drive pulley (62) and the suspension rope (61) passes around the drive pulley (62) and is mounted on the hanging rod (12).

7. An improved fall arrest device according to claim 6, characterized in that: A guide plate (63) is fixedly connected to the hanging rod (12), and the suspension rope (61) is fixedly connected to the guide plate (63). A guide groove (64) for sliding cooperation with the guide plate (63) is provided on the ring plate base (1). A sliding groove (65) for sliding cooperation with the hanging rod (12) is provided on the inner top surface of the guide groove (64). A return spring (66) is fixedly connected to the guide plate (63), and the end of the return spring (66) away from the guide plate (63) is fixedly connected to the inner end face of the guide groove (64).

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