Elastic damping wheel triggered fall arrest safety device

Abstract

The application provides an elastic damping wheel triggered anti-falling safety device, which comprises a ring-shaped box and an anti-falling locking device; the ring-shaped box is formed by connecting a plurality of arc-shaped boxes through bolts; the anti-falling locking device comprises elastic damping wheels and is uniformly distributed on the ring-shaped box; the ring-shaped box is installed on a piece to be prevented from falling; when the piece to be prevented from falling normally lifts, the anti-falling locking device is in an unlocked state, and the piece to be prevented from falling can drive the ring-shaped box and the anti-falling locking device to normally lift; when the piece to be prevented from falling falls accidentally, the elastic damping wheels can make the anti-falling locking device quickly enter a locked state, so as to prevent the ring-shaped box and the piece to be prevented from falling from continuing to fall. The elastic damping wheel triggered anti-falling safety device is compact in structure, safe and reliable, and easy to operate.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a fall prevention safety device triggered by an elastic damping wheel for use in the construction of cylindrical pier bridges. Background Technology

[0002] In bridge design, column piers are a commonly used structural type. For simply supported bridges, the cap beam is a crucial component that connects the superstructure and the substructure. The load of the superstructure is transferred to the substructure and foundation through the cap beam, making it one of the main load-bearing structures. In short, the cap beam refers to the horizontal beam installed on top of the pier to support, distribute, and transfer the load of the superstructure; it is also called a cap beam.

[0003] In existing technologies, the most common construction methods for bridge cap beams include the transverse steel bar method, the corbel bracket method, the ground support method, and the traditional clamp method.

[0004] In recent years, a device has been developed that can erect temporary support structures for cap beams, such as supporting main beams, distribution beams, cap beam bottom formwork, and cap beam construction work platforms, at a low altitude. Then, using a related lifting device, these temporary support structures can be lifted together to the construction work position at a higher altitude. This not only overcomes the shortcomings of existing cap beam construction methods but also greatly improves construction efficiency, reduces the risks of working at height, and ensures the personal safety of construction workers.

[0005] However, existing climbing formwork and other lifting devices rely on the friction of clamping clamps to bear vertical loads, thus posing a safety hazard of accidental falls. The market urgently needs a safe and reliable fall arrest device to prevent such devices from falling further after a certain distance or when their speed reaches a certain limit, thus preventing related accidents. Summary of the Invention

[0006] To address the problems in the prior art, this invention provides a compact, safe, and reliable fall protection device triggered by an elastic damping wheel.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a fall arrest safety device triggered by an elastic damping wheel, comprising an annular housing and a fall arrest locking device; the annular housing is formed by connecting multiple arc-shaped housings with bolts; the fall arrest locking devices are evenly distributed on the annular housing; the annular housing is installed on the object to be prevented from falling; when the object to be prevented from falling normally rises and falls, the fall arrest locking device is in an unlocked state, and the object to be prevented from falling can drive the annular housing and the fall arrest locking device to rise and fall normally; when the object to be prevented from falling accidentally falls, the fall arrest locking device can be in a locked state, preventing the annular housing and the object to be prevented from falling further;

[0008] The fall arrestor locking device includes a disc spring cylinder, a door frame, an upper wedge block, and a lower wedge block. The piston end of the disc spring cylinder is hinged to the annular housing, and the cylinder body end of the disc spring cylinder is hinged to the door frame. The upper wedge block is detachably mounted on the cylinder body end of the disc spring cylinder. The upper wedge block has a downward wedge surface, and the lower wedge block has an upward wedge surface, with the downward wedge surface of the upper wedge block contacting the upward wedge surface of the lower wedge block. Elastic damping wheels are installed on both sides of the lower wedge block. When the object to be prevented from falling accidentally falls, the lower wedge block moves upward and horizontally relative to the upper wedge block under the action of the elastic damping wheels, which locks the fall arrestor locking device in a locked state, preventing the annular housing and the object to be prevented from falling further.

[0009] In a preferred embodiment, the anti-fall locking device further includes a guide plate, which is L-shaped; guide grooves are provided on both sides of the lower wedge block; the guide plates are respectively installed on both sides of the upper wedge block, and the L-shaped guide plates cooperate with the guide grooves on both sides of the lower wedge block to guide the lower wedge block when it slides relative to the upper wedge block.

[0010] In a preferred embodiment, the elastic damping wheel includes a mounting bracket, a roller bracket, and a roller; the roller is rotatably mounted on one end of the roller bracket; a damping spring is sleeved on the other end of the roller bracket, one end of the damping spring abuts against the mounting bracket, and the other end of the damping spring abuts against the roller bracket; and a stop nut is detachably mounted on the other end of the roller bracket after passing through the mounting bracket.

[0011] In a preferred embodiment, a linear guide rail is also mounted on the mounting bracket, and one side of the roller bracket is connected to the linear slider of the linear guide rail, allowing the roller bracket to slide along the linear guide rail.

[0012] In a preferred embodiment, the elastic damping wheel further includes a clamping brake assembly, which includes a brake pad, a brake pad mounting seat, a brake spring, and a connecting rod. There are two brake pads and two brake pad mounting seats. The brake pads are mounted on the brake pad mounting seats. The two brake pad mounting seats are connected by the connecting rod and then mounted on a mounting bracket via the connecting rod. The brake spring is sleeved on the connecting rod and is located between the two brake pad mounting seats.

[0013] In a preferred embodiment, the anti-fall locking device further includes a pressure plate with a raised edge; the pressure plate is connected to the upper wedge block by screws, and the upper wedge block is mounted on the cylinder end of the disc spring cylinder by the raised edge on the pressure plate.

[0014] In a preferred embodiment, the anti-fall locking device further includes a needle roller array; a groove is formed on the downward-facing wedge surface of the upper wedge block; the needle roller array is installed in the groove on the downward-facing wedge surface of the upper wedge block and rolls in contact with the upward-facing wedge surface of the lower wedge block.

[0015] In a preferred embodiment, a friction block can be detachably mounted on the lower wedge block.

[0016] In a preferred embodiment, the fall protection safety device triggered by the elastic damping wheel further includes a suspension device, wherein the annular box is suspended on the object to be protected from falling via the suspension device.

[0017] In a preferred embodiment, the suspension device includes a first mounting base, a second mounting base, a bolt, a chain, a chain connector, a first pin assembly, and two second pin assemblies. The first mounting base is fixed to the annular housing, and the second mounting base is fixed to the object to be dropped. One end of the chain is connected to the second mounting base via the first pin assembly, and the other end of the chain is connected to one end of the chain connector via one of the second pin assemblies. The other end of the chain connector is connected to the eyelet end of the bolt via the other second pin assembly, and the threaded end of the bolt is fixedly connected to the first mounting base via a nut.

[0018] In a preferred embodiment, guide wheels are also installed on the annular box.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The fall arrestor triggered by the elastic damping wheel of this invention has a compact structure, is safe and reliable, and is easy to operate. Locking and unlocking are both relatively reliable and convenient. In the event of an accidental fall by the climbing device, it can be braked and locked to the pier within a short distance, ensuring the overall safety of the equipment.

[0021] 2. The fall protection safety device triggered by the elastic damping wheel of the present invention does not affect the normal up and down operation of the fall protection component. It will only be triggered and locked when an accidental weightlessness and fall occurs, and can be unlocked as long as the fall protection component moves normally upward.

[0022] 3. The anti-fall locking device has a row of needle rollers between the upper and lower wedge blocks, which can reduce the friction coefficient between the wedge blocks. A friction block can be detachably installed on the lower wedge block, which can increase the friction coefficient between the lower wedge block and the pier. This ensures that the contact between the upper and lower wedge blocks and the pier meets the wedge self-locking condition.

[0023] 4. The lower wedge block of the present invention can be guided by the guide plate. In a weightless state, the lower wedge block can slide along the guide plate, triggering the lower wedge block and the upper wedge block to move closer to each other, so that the lower wedge block moves horizontally and locks the anti-fall device.

[0024] 5. The present invention integrates a disc spring cylinder, which can achieve buffering and avoid excessive impact force that could cause structural damage.

[0025] 6. The elastic damping wheel integrates a clamp-type brake assembly, which can compensate for brake wear through the brake spring, extending the working life of the elastic damping wheel.

[0026] 7. This invention integrates multiple guide wheels to ensure safe and reliable movement of the entire device during vertical movement, preventing malfunctions and improving the overall reliability of the device. The upper wedge block connection structure of the anti-fall locking device has a certain degree of flexibility, ensuring that the contact between the lower wedge block and the pier is not affected by the elastic deformation of the structural components, ensuring balanced load distribution and preventing localized damage to the pier surface. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the fall prevention safety device triggered by the elastic damping wheel of the present invention installed on a pier.

[0028] Figure 2 This is an exploded view of the structure of the fall protection safety device triggered by the elastic damping wheel of the present invention.

[0029] Figure 3 This is a schematic diagram of the installation structure of the arc-shaped box and the anti-fall locking device.

[0030] Figure 4 This is an exploded view of the arc-shaped box and the anti-fall locking device.

[0031] Figure 5 This is a schematic diagram of the suspension device.

[0032] Figure 6 This is a front view schematic diagram of the anti-fall locking device of the present invention.

[0033] Figure 7 This is a top view of the anti-fall locking device of the present invention.

[0034] Figure 8 for Figure 6 Schematic sectional view along the middle BB direction.

[0035] Figure 9 for Figure 8 Enlarged schematic diagram of part I in the middle.

[0036] Figure 10 for Figure 7 Schematic sectional view along the AA direction.

[0037] Figure 11 This is a cross-sectional schematic diagram of the disc spring cylinder in this invention.

[0038] Figure 12 This is a three-dimensional structural diagram of the upper wedge block from one perspective in this invention.

[0039] Figure 13 This is a three-dimensional structural diagram of the upper wedge block from another perspective in this invention.

[0040] Figure 14 This is a three-dimensional structural diagram of the lower wedge block in this invention.

[0041] Figure 15 This is a front view schematic diagram of the lower wedge block in this invention.

[0042] Figure 16 for Figure 15 Cross-sectional view along the CC direction.

[0043] Figure 17 This is a schematic diagram of the installation structure between the door frame and the upper and lower wedge block assemblies.

[0044] Figure 18 This is a schematic diagram showing the exploded structure between the door frame and the upper and lower wedge block components.

[0045] Figure 19 This is a schematic diagram of the anti-fall locking device under normal working conditions of the present invention.

[0046] Figure 20 This is a schematic diagram of the initial trigger state of the anti-fall locking device of the present invention.

[0047] Figure 21 This is a schematic diagram of the state during the triggering process of the anti-fall locking device of the present invention.

[0048] Figure 22 This is a schematic diagram of the anti-fall locking device of the present invention in the triggered locking state. Detailed Implementation

[0049] Reference Figures 1 to 22 An embodiment of the fall protection safety device triggered by an elastic damping wheel according to the present invention is further described.

[0050] A fall arrestor triggered by an elastic damping wheel includes an annular housing 1 and a fall arrestor locking device 7. The annular housing 1 is formed by connecting multiple arc-shaped housings 6 together with bolts 3 to form a whole; the fall arrestor triggered by the elastic damping wheel is suspended on a climbing device 4 (i.e., the part to be prevented from falling) by a suspension device 2, and the fall arrestor triggered by the elastic damping wheel is driven by the climbing device 4 to move up and down along the pier 5.

[0051] The fall arrestor locking devices 7 are evenly distributed on the annular box 1, which is also equipped with multiple guide wheels 8. The evenly distributed multiple sets of fall arrestor locking devices 7 can ensure that the fall arrestor safety device triggered by the elastic damping wheel is subjected to balanced force, thereby improving braking capability. The integrated multiple sets of guide wheels 8 can ensure that the fall arrestor safety device triggered by the elastic damping wheel remains centered with the pier 5 during its up and down movement, enhancing operational stability and reducing the occurrence of malfunctions.

[0052] The suspension device 2 comprises a first and a second mounting base 2.1, a fisheye bolt 2.2, a nut 2.3, a chain connector 2.4, a chain 2.5, a second mounting base 2.6, a first pin assembly 2.7, and a second pin assembly 2.8. The first mounting base 2.1 is fixed to the arc-shaped housing 6 of the fall arrestor triggered by the elastic damping wheel, and the second mounting base 2.6 is fixed to the climbing device 4. The distance between the first mounting base 2.1 and the second mounting base 2.6 can be adjusted by the fisheye bolt 2.2. The fall arrestor triggered by the elastic damping wheel can be distributed with multiple sets of suspension devices 2. By adjusting the fisheye bolt 2.2, the fall arrestor triggered by the elastic damping wheel can be leveled to ensure the stability of the fall arrestor triggered by the elastic damping wheel during its up and down movement.

[0053] The fall arrestor locking device 7 includes an adjustable lug 7.1, a lug adjusting shim 7.2, a third pin assembly 7.3, a disc spring cylinder 7.4, an elastic damping wheel 7.5, a door frame 7.6, a pressure plate 7.7, an upper wedge block 7.8, a needle roller assembly 7.9, a lower wedge block assembly 7.10, a guide plate 7.11, a first bolt assembly 7.12, and a second bolt assembly 7.13. A fixed lug 6.1 is designed on the arc-shaped housing 6. The adjustable lug 7.1 and the fixed lug 6.1 are connected by the second bolt assembly 7.13. The relative position between the fall arrestor locking device 7 and the pier 5 can be adjusted by adding or removing the lug adjusting shim 7.2, so that the lower wedge block assembly 7.10 and the pier 5 form the optimal initial gap S.

[0054] The disc spring cylinder 7.4.5 has two trunnions 7.4.5.1, which contact the slide groove 7.6.1 at the door frame 7.6 through the trunnions 7.4.5.1, providing support and guidance for the disc spring cylinder 7.4. Multiple disc springs 7.4.4 are installed between the piston rod 7.4.1 and the cylinder 7.4.5, providing elastic cushioning.

[0055] The piston rod 7.4.1 of the disc spring cylinder 7.4 is equipped with a spherical bearing 7.4.2, which is connected to the adjustable lug 7.1 via a third pin assembly 7.3. The right end of the cylinder 7.4.5 of the disc spring cylinder is a spherical surface 7.4.6 (the upper wedge block 7.8 has an arc-shaped surface 7.8.3 that mates with the spherical surface 7.4.6). The upper wedge block 7.8 is connected to the cylinder 7.4.5 of the disc spring cylinder via a pressure plate 7.7, so that the disc spring cylinder 7.4 and the upper wedge block 7.8 form a ball joint connection. Furthermore, the top of the upper wedge block 7.8 is an arc-shaped surface 7.8.1, which makes line contact with the door frame 7.6, allowing the upper wedge block 7.8 to adapt to the elastic deformation caused by the load on the anti-fall safety device housing triggered by the elastic damping wheel. This ensures effective contact between the lower wedge block assembly 7.10 and the pier 5, preventing damage to the surface of the pier 5.

[0056] The lower wedge block assembly 7.10 includes a lower wedge block 7.10.1, a friction block 7.10.2, and a first fastening screw 7.10.3. The friction block 7.10.2 is fixed to the lower wedge block 7.10.1 by the first fastening screw 7.10.3. In actual use, the friction block 7.10.2 needs to come into contact with the pier 5 and is a wear part. It can be detached by the first fastening screw 7.10.3 for easy replacement.

[0057] The upper wedge block 7.8 and the lower wedge block assembly 7.10 are guided and connected by a guide plate 7.11. The lower wedge block 7.8 can slide relative to the upper wedge block 7.8 along the guide plate 7.11. The lower wedge block 7.10.1 is designed with a guide groove 7.10.1.1. The guide plate 7.11 is designed as an L-shape and is fixed to both sides of the upper wedge block 7.8 by the first bolt assembly 7.12, extending into the guide groove of the lower wedge block 7.10.1 to guide and limit the movement of the lower wedge block 7.10.1. The upper wedge block 7.8 has a downward wedge-shaped surface, and the lower wedge block 7.10.1 has an upward wedge-shaped surface. The downward wedge-shaped surface of the upper wedge block 7.8 and the upward wedge-shaped surface of the lower wedge block 7.10.1 are in contact. The downward wedge-shaped surface of the upper wedge block 7.8 has a groove 7.8.2, and a needle roller row 7.9 is installed in the groove 7.8.2. The downward wedge-shaped surface of the upper wedge block 7.8 and the upward wedge-shaped surface of the lower wedge block 7.10.1 are in contact through the needle roller row 7.9, which can change sliding friction into rolling friction. This can reduce the coefficient of friction between the upper wedge block 7.8 and the lower wedge block 7.10.1 when they move along the inclined plane, and make the self-locking performance of the anti-fall locking device 7 more reliable.

[0058] Elastic damping wheels 7.5 are installed on both sides of the lower wedge block 7.10.1, and the elastic damping wheels 7.5 are in contact with the pier column 5. When a weightless fall occurs, due to the friction between the elastic damping wheels 7.5 and the pier column 5, the lower wedge block assembly 7.10 will move relative to the upper wedge block 7.8 along the guide plate 7.11 under the action of the elastic damping wheels 7.5. Since the upper wedge block 7.8 and the lower wedge block 7.10.1 have matching wedge surfaces and are in inclined contact, there will be a horizontal displacement when they move relative to each other, so that the lower wedge block assembly 7.10 contacts the pier column 5, triggering the fall arrest locking action. The climbing device 4 is stopped and locked in position through the inclined self-locking to prevent further sliding and play an effective fall arrest protection role.

[0059] The elastic damping wheel 7.5 comprises a linear guide rail 7.5.1, a stop nut 7.5.2, a damping spring 7.5.3, a roller bracket 7.5.4, a roller 7.5.5, a fourth pin assembly 7.5.6, a linear slider 7.5.7 of the linear guide rail, a clamping brake assembly 7.5.8, a mounting bracket 7.5.9, and a second fastening screw 7.5.10. The roller bracket 7.5.4 is fixedly connected to the linear slider 7.5.7 via the second fastening screw 7.5.10, allowing the roller bracket to slide linearly along the linear guide rail 7.5.1 without obstruction. A damping spring 7.5.3 passes through the tail of the roller bracket 7.5.4, ensuring that the roller 7.5.5 maintains effective contact with the pier 5 under spring force during operation. The roller bracket 7.5.4 has a protrusion. The roller 7.5.5 is rotatably mounted on one end of the roller bracket 7.5.4; the damping spring 7.5.3 is sleeved on the other end of the roller bracket 7.5.4, one end of the damping spring 7.5.3 abuts against the mounting bracket 7.5.9, and the other end of the damping spring 7.5.3 abuts against the protrusion of the roller bracket 7.5.4; and the other end of the roller bracket 7.5.4 passes through the mounting bracket 7.5.9 and is detachably fitted with a stop nut 7.5.2.

[0060] The clamping brake assembly 7.5.8 includes a brake spring 7.5.8.1, a brake adjusting shim 7.5.8.2, a connecting rod 7.5.8.3, a screw assembly 7.5.8.4, a fifth pin assembly 7.5.8.5, a brake pad mounting seat 7.5.8.6, and brake pads 7.5.8.7. Under the action of the brake spring 7.5.8.1, the two brake pads 7.5.8.7 clamp the roller 7.5.5, thereby generating a braking force on the roller 7.5.5. This allows the roller 7.5.5 to roll with damping during operation, increasing the friction between the roller 7.5.5 and the support column 5.

[0061] In the normal working state, the lower wedge block assembly 7.10 rests on the bottom of the door frame 7.6 under its own weight, and the initial gap between the lower wedge block assembly 7.10 and the pier 5 is S. When the crawler 4 falls accidentally, the initial triggering process state one is shown as the instant of weightlessness. Under the action of the elastic damping wheel 7.5, the lower wedge block assembly 7.10 begins to move relative to the upper wedge block 7.8, with a relative movement stroke of H1, and the gap between the lower wedge block assembly 7.10 and the pier 5 decreases to S1. During the triggering process, the triggering process state two is shown as the lower wedge block assembly 7.10 comes into contact with the pier 5, triggering the fall arresting locking device 7 to begin braking. At this time, the relative movement stroke of the lower wedge block 7.10.1 relative to the upper wedge block 7.8 increases to H2. When the locking is triggered, the third locking state is the maximum braking force state. The lower wedge block assembly 7.10 moves to the upper limit of the door frame 7.6. The relative movement stroke of the lower wedge block 7.10.1 with respect to the upper wedge block 7.8 increases to H3. At this time, the disc spring of the disc spring cylinder 7.4 is compressed to a certain extent, with a compression stroke of T1. In this state, the anti-fall locking device 7 will exert the maximum braking force. The lower wedge block 7.10.1 and the upper wedge block 7.8 form a wedge self-locking, which can effectively lock the load on the pier 5.

[0062] After the anti-fall locking device 7 is locked, if unlocking is required, the anti-fall safety device triggered by the climbing device 4 and the elastic damping wheel is lifted upwards to work normally, so that the upper wedge block 7.8 and the lower wedge block 7.10.1 are separated. The lower wedge block assembly 7.10 will return to its initial position under its own weight and the action of the elastic damping wheel 7.5, thus realizing the unlocking action.

[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. It should be noted that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fall protection safety device triggered by an elastic damping wheel, characterized in that: It includes an annular housing and a fall arrestor locking device; the annular housing is composed of multiple arc-shaped housings connected by bolts; the fall arrestor locking devices are evenly distributed on the annular housing; the annular housing is installed on the object to be prevented from falling; when the object to be prevented from falling normally rises and falls, the fall arrestor locking device is in the unlocked state, and the object to be prevented from falling can drive the annular housing and the fall arrestor locking device to rise and fall normally; when the object to be prevented from falling accidentally falls, the fall arrestor locking device can be in the locked state, preventing the annular housing and the object to be prevented from falling further; The fall arrestor includes a disc spring cylinder, a door frame, an upper wedge block, and a lower wedge block; the piston end of the disc spring cylinder is hinged to the annular housing, and the cylinder body end of the disc spring cylinder is hinged to the door frame; the upper wedge block is detachably mounted on the cylinder body end of the disc spring cylinder; the upper wedge block has a downward wedge surface, the lower wedge block has an upward wedge surface, and the downward wedge surface of the upper wedge block contacts the upward wedge surface of the lower wedge block; elastic damping wheels are installed on both sides of the lower wedge block; When the component to be protected from falling accidentally falls, the lower wedge block moves upward and horizontally relative to the upper wedge block under the action of the elastic damping wheel, which can lock the anti-fall locking device and prevent the annular box and the component to be protected from falling further. The elastic damping wheel includes a mounting bracket, a roller bracket, a roller, and a clamping brake assembly. The roller is rotatably mounted on one end of the roller bracket. A damping spring is fitted on the other end of the roller bracket, with one end of the damping spring abutting against the mounting bracket and the other end of the damping spring abutting against the roller bracket. A stop nut is detachably installed on the other end of the roller bracket after passing through the mounting bracket. The clamping brake assembly includes a brake pad, a brake pad mounting seat, a brake spring, and a connecting rod. There are two brake pads and two brake pad mounting seats. The brake pads are mounted on the brake pad mounting seats. The two brake pad mounting seats are connected by the connecting rod and then mounted on the mounting bracket via the connecting rod. The brake spring is fitted on the connecting rod and is located between the two brake pad mounting seats.

2. The fall protection safety device triggered by an elastic damping wheel according to claim 1, characterized in that: The anti-fall locking device also includes a guide plate, which is L-shaped; guide grooves are opened on both sides of the lower wedge block; the guide plate is respectively installed on both sides of the upper wedge block, and the L-shaped guide plate cooperates with the guide grooves on both sides of the lower wedge block to guide the lower wedge block when it slides relative to the upper wedge block.

3. The fall protection safety device triggered by an elastic damping wheel according to claim 2, characterized in that: The mounting bracket is also equipped with a linear guide rail, and one side of the roller bracket is connected to the linear slider of the linear guide rail. The roller bracket can slide along the linear guide rail.

4. The fall protection safety device triggered by an elastic damping wheel according to claim 1, characterized in that: The anti-fall locking device also includes a pressure plate with a raised edge; the pressure plate is connected to the upper wedge block by screws, and the upper wedge block is hung on the cylinder end of the disc spring cylinder by the raised edge on the pressure plate.

5. The fall protection safety device triggered by an elastic damping wheel according to claim 1, characterized in that: The anti-fall locking device also includes a needle roller array; a groove is formed on the downward-facing wedge surface of the upper wedge block; the needle roller array is installed in the groove on the downward-facing wedge surface of the upper wedge block and rolls in contact with the upward-facing wedge surface of the lower wedge block.

6. The fall protection safety device triggered by an elastic damping wheel according to claim 1, characterized in that: A friction block can also be detachably installed on the lower wedge block.

7. The fall protection safety device triggered by an elastic damping wheel according to claim 1, characterized in that: The fall protection safety device triggered by the elastic damping wheel also includes a suspension device, and the annular box is suspended on the object to be protected from falling through the suspension device.

8. A fall arrest safety device triggered by an elastic damping wheel according to claim 7, characterized in that: The suspension device includes a first mounting base, a second mounting base, a bolt, a chain, a chain connector, a first pin assembly, and two second pin assemblies. The first mounting base is fixed to the annular housing, and the second mounting base is fixed to the object to be dropped. One end of the chain is connected to the second mounting base via the first pin assembly, and the other end of the chain is connected to one end of the chain connector via one of the second pin assemblies. The other end of the chain connector is connected to the eyelet end of the bolt via the other second pin assembly. The threaded end of the bolt is fixedly connected to the first mounting base via a nut.

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