Quick mounting and dismounting device and mounting and dismounting method for stair edge protection

Abstract

The invention discloses a quick mounting and dismounting device and mounting and dismounting method.The quick mounting and dismounting device is of a three-fork-claw structure and comprises a clamping component, a transmission component, a limiting component and a locking assembly, the clamping assembly comprises two fixing forks and a movable fastening fork, and the two fixing forks are perpendicular to each other; the transmission part comprises a reinforcing winch formed by concentrically and hollowly connecting a force transmission gear and a helical tooth scale wheel and a force transmission rack rod, the force transmission gear is in meshed transmission with the force transmission rack rod to drive the fastening fork to move and be fixedly embedded on a stair step, and a limiting roller and a limiting retaining ring of the limiting part ensure accurate movement of the force transmission rack rod. The helical tooth scale wheel is matched with a portable locking pin and a spring safety pin of the locking assembly to form a double-self-locking mechanism. Quick mounting is achieved by pulling the vertical rod, and quick dismounting is achieved by pulling the safety hanging rope and lifting the handheld locking pin. The device is easy to operate, rapid, modularized and standardized construction of stair edge protection is achieved, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of construction engineering, and more particularly, relates to a quick installation and removal device and an installation and removal method for stair edge protection. Background Art

[0002] In the field of construction engineering, safety is always of paramount importance, and stair edge protection is a key link. Stairs are important channels for vertical transportation within buildings and are used very frequently during construction. Due to the frequent passage and transportation of people and materials during construction, and the lack of effective protection at the edge of the stairs, people and objects can easily fall from the edge, causing serious casualties and posing a huge threat to the safety of construction workers. It may also cause significant economic losses and adverse social impacts. Therefore, efficient and reliable stair edge protection is of great importance in ensuring the safety of construction projects and ensuring the smooth progress of the project. Currently, steel pipe-fastener type and integrated prefabricated stair guardrails are used to ensure safe construction. However, there are some problems with the existing technology. In traditional safe and civilized construction operations, the edge protection of stair treads requires the use of a large number of bolts, welding and other methods for fixing, which often consumes a lot of manpower and material resources. The installation and removal efficiency is low, and while consuming a lot of resources, it takes up a large amount of space, affecting the subsequent operation of other processes. Summary of the Invention

[0003] In response to the above defects or improvement needs of the prior art, the present invention provides a quick installation and removal device and installation and removal method for stair edge protection. By clamping a "three-pronged claw" device composed of a fastening fork and a fixed fork on the stair tread, the protective vertical rod is repeatedly bent in the downward direction of the stairs to drive the reinforcement hinge plate to rotate, so that the power transmission gear pushes the power transmission gear rod with serrations to move linearly, thereby driving the fastening fork and the fixed fork of the device to cooperate to clamp the stairs to complete the installation. When removing, it is only necessary to manually pull the safety hanging rope and lift the hand locking pin to release the double locking removal device, thereby realizing rapid installation and removal of the device.

[0004] To achieve the above-mentioned object, according to one aspect of the present invention, there is provided a quick installation and removal device for stair edge protection, comprising a clamping component embedded in the stair tread, a transmission component that drives the clamping component to be embedded in the stair tread by a transmission force, a limiting component that ensures that the transmission component does not deviate or fall during movement, and a locking or releasing component that locks or releases the transmission component so that the clamping component clamps or detaches from the stair tread, wherein: The clamping component includes a support base, two mutually perpendicular fixed forks installed at the end of the support base, and a movable fastening fork; The transmission component comprises a reinforced hinge disc and a force transmission rack, the reinforced hinge disc comprises a force transmission gear and a bevel gear scale wheel connected concentrically and hollowly, the hollow part is embedded on the fixed shaft of the support base and can rotate around the fixed shaft; the force transmission rack is in the shape of a rectangular strip, one side is provided with a force transmission sawtooth engaged with the force transmission gear, and the end part is movably connected with the fastening fork; The locking component comprises a hand locking pin hinged on the rod sleeve and the end part is engaged with the tooth groove of the bevel gear scale wheel, and a spring safety pin fixed on the support base and engaged with the tooth groove of the bevel gear scale wheel.

[0005] Further, the transmission component further comprises a rod sleeve, the bottom of the rod sleeve is rotatably connected with the fixed shaft.

[0006] Further, the limiting component comprises a bearing-shaped limiting roller fixed on the support base, comprising a first limiting roller, a second limiting roller and a third limiting roller which are dispersedly arranged and closely attached to the back of the force transmission rack.

[0007] Further, the limiting component further comprises a first limiting ring and a second limiting ring located on the gear side of the force transmission rack, one end of the first limiting ring is rigidly connected with the support base, and the other end is rigidly connected with the limiting rod, one end of the second limiting ring is rigidly connected with the support base, and the other end is rigidly connected with the support base after passing through the hollow part of the third limiting roller.

[0008] Further, the limiting component further comprises a limiting rod connected with the top end of the first limiting roller to limit the rotation of the rod sleeve in the upward direction of the stairs, the lower part of the limiting rod is rigidly connected with the support base after passing through the hollow part of the first limiting roller, and is rigidly connected with the first limiting ring between the first limiting roller and the limiting rod.

[0009] Further, the limiting component further comprises an anti-dropping plate installed on the top of the force transmission rack and a anti-dropping rod connected with the first limiting ring.

[0010] Further, the locking component further comprises a first reset spring and a second reset spring, the first reset spring is located at the tooth back end of the force transmission rack, one end of the first reset spring is connected with the connecting node of the first limiting roller and the first limiting ring, and the other end is connected with the end part of the anti-dropping plate; the second reset spring is located below the hinged part of the hand locking pin, one end of the second reset spring is connected with the rod sleeve, and the other end is connected with the lower part of the hand locking pin.

[0011] Further, the spring safety pin is provided with a safety hanging rope.

[0012] Further, it further comprises a protective vertical rod inserted into the rod sleeve.

[0013] According to another aspect of the present application, the present application provides a quick installation and disassembly method for stair edge protection, which is implemented by using the quick installation and disassembly device for stair edge protection described above, and includes the following specific steps: S100: According to the stair step, the angles of the two fixing forks and the fastening fork are adjusted, the device is pushed horizontally from the side of the stair edge, the fixing fork is clamped on the upper front edge of the step, and the fastening fork is suspended on the lower back of the stair step; S200: The protection vertical rod is vertically inserted into the rod sleeve, the protection vertical rod is repeatedly bent towards the downward direction of the stair, the reinforced hinge disc is rotated, the transmission gear pushes the transmission gear rod to move linearly towards the inside of the stair, the fastening fork is tightened upwards, and the fastening fork and the fixing fork clamp the stair step until the fastening fork and the fixing fork clamp the stair step; S300: The protection vertical rod is swung back to the vertical angle specified by the limiting rod, the hand-held locking pin cooperates with the spring safety pin to automatically take effect, the device enters a double-locked state, the protection vertical rod serves as a protection rail post and the transverse connecting rod forms an edge protection body, and the installation of the device is completed; S400: After the construction work is completed, the spring safety pin is pulled to make the spring safety pin disengage from the bevel gear scale wheel, the gear reverse rotation is released, and the first safety is released; the hand-held locking pin is pulled upwards to overcome the resistance of the reset spring, the end of the hand-held locking pin is lifted to disengage from the tooth groove of the bevel gear scale wheel, the hand-held locking pin is released from the locking action, and the second safety is released; the reset spring at the back of the transmission gear rod is instantaneously opened, the transmission gear rod is reversely reset, the fastening fork is opened to disengage from the back of the step, and the clamping state is released; S500: The protection vertical rod is vertically pulled out, the device is horizontally pulled out to make the fixing fork and the fastening fork disengage from the stair step, and the disassembly is completed.

[0014] Overall, compared with the prior art, the above technical solutions conceived by the present application can achieve the following beneficial effects: 1. The quick installation and disassembly device for stair edge protection fixes the fixing fork of the “three-pronged claw” device on the edge of the stair step and installs the fastening fork on the end of the gear rod, repeatedly bends the protection vertical rod to rotate the reinforced hinge disc, makes the internal transmission gear push the transmission gear rod with sawteeth to move linearly, drives the fastening fork and the fixing fork to clamp the stair, and completes the installation. When disassembled, only the safety rope and the hand-held locking pin need to be pulled and lifted to release the double locking and remove the device. The device is simple to operate, solves the problem of consuming a large amount of manpower and a long time in traditional stair slope step protection work, and completes the entire installation and disassembly process through “bending, pulling and lifting”, realizes the quick installation and disassembly of the stair edge protection, improves the construction efficiency, and effectively reduces the engineering construction cost.

[0015] 2. The quick installation and disassembly device for stair edge protection of the present application is located on the side and below the stair step, only occupies the width of the step edge, the vertical rod extends vertically upward and can be selected according to different scene requirements, the height of the vertical rod is selected correspondingly, the problems that the traditional protection device occupies the horizontal space of the stair, and the stair edge protection is fixed in a straight-through mode from top to bottom, affecting the subsequent construction, are solved, and the device does not occupy the horizontal and upper operation space, and does not hinder the construction of other procedures of the upper structure.

[0016] 3. The quick installation and disassembly device for stair edge protection of the present application adopts a "three-pronged claw" structure fastening installation, solves the pain points of the stair edge protection punching or screwing fixation and the like, avoids the damage to the stair structure, reduces the subsequent repair cost, and reduces the engineering cost.

[0017] 4. The quick installation and disassembly device for stair edge protection of the present application cooperates with the bevel tooth scale wheel and the hand-held locking pin + spring safety pin double locking mechanism, ensures that the clamping force is unidirectionally increased and cannot be returned, solves the problem that the traditional stair edge protection gradually becomes loose with the increase of the use time, and greatly improves the safety of the stair edge protection.

[0018] 5. The quick installation and disassembly device for stair edge protection of the present application has a stroke-adjustable power transmission tooth rod, drives the fastening fork to tighten, is suitable for different sizes of stairs and can be reused after disassembly, is suitable for large-scale standardized production, realizes modularization and standardization construction, improves the construction efficiency, and reduces the engineering cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a front view structural schematic diagram of a quick installation and disassembly device for stair edge protection in an unfastened state according to an embodiment of the present application. Figure 2 It is a front view structural schematic diagram of a quick installation and disassembly device for stair edge protection in a fastened state according to an embodiment of the present application. Figure 3 It is a side view structural schematic diagram of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application. Figure 4 It is a first layer structure schematic diagram of a support base of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application. Figure 5 It is a first layer structure side view schematic diagram of a support base of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application. Figure 6 It is a second layer structure schematic diagram of a support base of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application. Figure 7 Figure 2 is a side view of a two-layer structure of a support base of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application; Figure 8 Figure 3 is a schematic view of a three-layer structure of a support base of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application; Figure 9 Figure 4 is a side view of a three-layer structure of a support base of a quick installation and disassembly device for stair edge protection according to an embodiment of the present application; Figure 10 Figure 5 is a flow chart of a quick installation and disassembly method for stair edge protection according to an embodiment of the present application.

[0020] In all the drawings, the same reference signs denote the same technical features, specifically: 1 - support base, 2 - fixed fork, 3 - fastening fork, 4 - fixed hinge disc, 401 - force transmission gear, 402 - bevel toothed scale wheel, 5 - force transmission gear rod, 6 - rod sleeve, 7 - limiting roller, 701 - limiting roller, 702 - limiting roller, 703 - third limiting roller, 801 - first limiting ring, 802 - second limiting ring, 9 - limiting rod, 10 - anti-removal rod, 11 - anti-removal plate, 12 - hand-held locking pin, 13 - spring safety pin, 1301 - safety hanging rope, 14 - return spring, first return spring - 1401, second return spring - 1402, 15 - protective vertical rod, 16 - stair step. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as there is no conflict.

[0022] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, inside, outside, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), if the certain posture changes, the directional indications will also change accordingly.

[0023] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implying the number of technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0024] In the present application, the term "comprise", "include" or any other variant thereof is intended to cover the non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent in such process, method, article or equipment. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or equipment including the elements.

[0025] Embodiment 1 As Figures 1-9 shown, the embodiment of the present application provides a quick installation and removal device for stair edge protection, which is in the shape of "three prongs", including clamping components, transmission components, limiting components and locking components. The transmission components transmit the acting force to drive the clamping components to be embedded on the stair steps. The limiting components ensure that the transmission components move along the set trajectory without deviation and falling. The locking components form a double self-locking mechanism to lock the transmission components to prevent reverse rotation and make the clamping components release the clamping force. By pulling and lifting the locking components, the locking mechanism can be released, the clamping components are released from the clamping state, and the quick installation and removal of the edge protection device is realized through the linkage of each component, thereby improving the construction efficiency.

[0026] The clamping component includes a support base 1, a fixed fork 2 and a fastening fork 3. The support base 1 provides basic support for other components. The fixed fork 2 is two steel plates at right angles to each other, the end of which is fixedly connected with the support base 1, and is used to be clamped on the vertical and horizontal surfaces of the edge side stair step 16 to provide the main support point and clamping surface. The inner side of the fixed fork 2 is provided with a non-slip rubber pad having a certain thickness, which can buffer and prevent slipping to a certain extent. The fastening fork 3 is also made of a steel plate, and the inner side is provided with a non-slip rubber pad. A pressure sensor is integrated on the fastening fork 3 to monitor the clamping force in real time. The fastening fork 3 is located at the lower end of the support base 1, and is used to be clamped on the back of the stair step 16. The two mutually perpendicular fixed forks 2 and the fastening fork 3 form a "three prong" structure to clamp the stair step together; The transmission components include a reinforced capstan 4, a transmission gear 5, and a rod sleeve 6. The reinforced capstan 4 includes a transmission gear 401 and a helical-toothed graduated wheel 402. These two wheels form a concentric, hollow T-shaped structure, forming the reinforced capstan 4. The hollow portion is embedded in the fixed axis of the support base 1 and can rotate around the fixed axis. The transmission gear 5 is generally rectangular and strip-shaped, with transmission serrations on one side that mesh with the transmission gear 401. The lower end is movably connected to the fastening fork 3. The helical-toothed graduated wheel 402 is subjected to force and rotates as a whole, driving the transmission gear 41 to rotate. The transmission gear 41 transmits the force to the transmission gear 5, driving the transmission gear 5 to move linearly, which in turn moves the fastening fork 3, thereby clamping the staircase. The rod sleeve 6 is the base of the protective rod 15. Its bottom is movably connected to the fixed axis of the support base 1 connected to the reinforcement hinge 4 and can rotate around the upper end of the fixed axis. Its function is to insert the protective rod 15 into the rod sleeve 6, and the twisting force generates a rotational force, causing the rod sleeve 6 to rotate around the fixed axis, driving the reinforcement hinge 4 as a whole to rotate around the fixed axis, meshing and pushing the force transmission gear rod 5 into linear motion, ultimately achieving the purpose of tightening the force transmission gear rod 5.

[0027] The limiting component includes a limiting roller 7, a limiting buckle, a limiting rod 9, a stop rod 10 and an anti-slip plate 11, wherein: The limiting roller 7 is in the shape of a bearing and includes a first limiting roller 701, a second limiting roller 702 and a third limiting roller 703, all of which are fixed to the supporting base 1 and are respectively located at the upper, middle and lower positions of one end of the tooth back of the force transmission gear rod 5, and the back of the force transmission gear rod 5 is in close contact with the limiting roller 7. The limiting roller 7 mainly limits the displacement of the force transmission gear rod 5 in the left and right directions during the force clamping process. Because it has bearing properties, it also has the function of reducing the friction force of the force transmission gear rod 5 during the clamping process. The first limiting roller 701 is connected to the limiting rod 9 at its top. The limiting rings, which resemble an "n" shape in cross-section, include a first limiting ring 801 and a second limiting ring 802, located at the upper and lower ends of the force transmission gear 5. The first "n"-shaped limiting ring 801 has one end rigidly connected to the support base 1 and the other end rigidly connected to the limiting rod 9. The second "n"-shaped limiting ring 802 has one end rigidly connected to the support base 1 and the other end, after passing through the hollow portion of the third limiting roller 703 and also rigidly connected to the support base 1. The limiting rings 8, in conjunction with the helical scale wheel 402, limit upward displacement of the force transmission gear 5 during the clamping process.

[0028] The limiting rod 9 is connected to the upper part of the first limiting roller 701, specifically, the lower part of the limiting rod 9 is rigidly connected to the supporting base 1 through the hollow part of the first limiting roller 701, and is rigidly connected with the first limiting buckle 801 to form an "h" type structure between the first limiting roller 701 and the limiting rod 9, which is close to the rod sleeve 6 to limit the rod sleeve 6 from exceeding the vertical angle in the upward direction of the stairs, so that the rod sleeve 6 can only rotate in the downward direction of the stairs. In general, the operating personnel will generate a force in the downward direction of the stairs when climbing the stairs to protect the vertical rod as a handrail, and the setting of the limiting rod 9 can prevent the vertical rod 15 from tilting in the upward direction of the stairs to generate a reverse force on the force transmission rack 5 when the vertical rod 15 is stressed, so as to loosen the device and ensure the safety of the device.

[0029] The anti-dropping rod 10 is located at one end of the first limiting buckle 801, and its function is to prevent the force transmission rack 5 and the fastening fork 3 from invading the space of the reinforced hinge disc 4 and finally falling off when the protection is released.

[0030] The anti-dropping plate 11 is located at the top end of the force transmission rack 5, and its two ends are slightly wider than the force transmission rack 5, and a return spring 14 is fixed at one end, and the other end cooperates with the anti-dropping rod 10 to prevent the force transmission rack 5 and the fastening fork 3 from falling off when the protection is released.

[0031] The locking component includes a hand-held locking pin 12, a spring safety pin 13 and a return spring 14, wherein, The hand-held locking pin 12 has a " )" type front surface and a reverse " L" type side surface, is hinged to the rod sleeve 6, and a return spring 14 is arranged below the hinge point. The top has a hand-held handle, and the lower part of the " L" type is matched with the bevel gear scale wheel 402. When the protective vertical rod 15 is moved back and forth, the " L" end is clamped into the tooth groove of the bevel gear scale wheel 402 under the action of the return spring 14, so that the bevel gear scale wheel 402 can only rotate in one direction. When the protection needs to be released, the " L" end is pulled out of the tooth groove by lifting the hand-held locking pin 12 upward.

[0032] The spring safety pin 13 is a device with forward spring contraction movement and reverse high-efficiency locking, which is located on the edge of the bevel gear scale wheel 402 and the supporting base 1, and an insurance hanging rope 1301 is arranged thereon, and the insurance hanging rope 1301 is fixed on the periphery of the supporting base 1 to prevent winding. In the process of moving the protective vertical rod 15 back and forth, the bevel gear scale wheel 402 is locked to prevent it from following the protective vertical rod 15 back to the original position. The spring safety pin 13 cooperates with the hand-held locking pin 12 to have the effect of double insurance of device fastening and anti-loosening, so that the bevel gear scale wheel 402 can only rotate in one direction. When the protection needs to be released, the hand-held locking pin 12 can be lifted upward by pulling the insurance hanging rope 131.

[0033] The reset spring 14 is provided with two parts, wherein the first reset spring 1401 is located at the tooth back end of the force transmission tooth rod 5, one end of which is connected to the connection node of the first limiting roller 701 and the first limiting ring 801, and the other end is connected to the end of the anti-dropping plate 11. When the protection is removed, the force transmission tooth rod 5 and the fastening fork 3 can be automatically removed from the fastening state under the action of the spring reset force. The first reset spring 1402 is located below the hand-held locking pin hinged part, which provides elastic force to press the “L” end of the hand-held locking pin 12 to the tooth surface of the bevel gear scale wheel 402 in normal state. When the bevel gear scale wheel 402 rotates counterclockwise, it can be released according to the spring elastic property, and the spring contraction property ensures that the bevel gear scale wheel 402 cannot rotate clockwise, thereby cooperating with the spring safety pin 13 to enable the bevel gear scale wheel 402 to produce a one-way rotation function under the action of the protection vertical rod 15.

[0034] During installation and removal, the protection vertical rod 15 inserted into the rod sleeve 6 is continuously moved in the downward direction of the stairs, which drives the rotation of the rod sleeve 6. Since the bottom of the rod sleeve 6 is fixedly connected with the reinforced hinge disc 4, the rotation of the rod sleeve 6 drives the rotation of the reinforced hinge disc 4, and the concentric bevel gear scale wheel 402 rotates synchronously with the force transmission gear 401. The teeth of the force transmission gear 401 are precisely engaged with the sawtooth on one side of the force transmission tooth rod 5, the force transmission gear 401 drives the linear motion of the force transmission tooth rod 5 with sawtooth, and the fastening fork 3 clamps the stair step 16. During the process, the bevel gear scale wheel 402 cooperates with the hand-held locking pin 12 and the spring safety pin 13 to form double self-locking, which ensures that the clamping force is unidirectionally increased and the fastening is not loosened. When the safety rope is pulled to release the locking, the handle of the hand-held locking pin is pulled, and the first reset spring 1401 automatically rebounds to reversely reset the force transmission tooth rod 5, thereby releasing the fastening fork 3 and achieving rapid disassembly.

[0035] During installation, the clamping force needs to be accurately controlled to improve the safety and reliability of the device. The closed-loop control algorithm formula of the clamping force based on PID is as follows: Among them, F ctrl ( t ) is the real-time control output force (N), e ( t )=F target −F actual ( t ) is the clamping force deviation, F target is the target clamping force (in this embodiment, it is set to 5kN), F actual is the measured value of the pressure sensor.

[0036] The dynamic gain coefficient is adaptively adjusted to meet the needs of different clamping stages: in, F max is the maximum design clamping force, θ max The maximum allowable deflection angle of the protective pole relative to the vertical direction.

[0037] The clamping process is controlled in stages: The single-step control force increments at each stage are as follows, which are the dynamic constraint boundaries of the PID output: (1) Rapid approximation stage: (2) Precision adjustment stage: (3) Lock-in phase: in, f To maintain the stage oscillation frequency (0.5~1Hz), K maintain To maintain the stage gain coefficient (0.1~0.3).

[0038] Using electric auxiliary control output: Example 2 like Figure 10 As shown, based on the quick installation and removal device for stair edge protection in the above embodiment 1, an embodiment of the present invention provides a quick installation and removal method for stair edge protection, including the following specific steps: S100: Adjust the angles of the two fixing forks and the fastening fork according to the stair treads, and push the device horizontally inward from the side of the stair tread. The fixing fork is clamped on the front edge of the tread at the top, and the fastening fork is suspended on the back of the stair tread at the bottom. S200: Insert the protective pole vertically into the pole sleeve base to ensure that the bottom of the protective pole is firmly locked with the pole sleeve; repeatedly bend the protective pole in the downward direction of the stairs to drive the reinforcement hinge to rotate. The transmission gear pushes the transmission gear rod to move linearly inward of the stairs, driving the fastening fork to tighten upward until the fastening fork and the fixed fork clamp the stair steps. S300: Swing the vertical pole back to the vertical angle specified by the limit rod. The hand-held locking pin and the spring safety pin will automatically take effect, and the device will enter the double locking state. The vertical pole serves as the guardrail support and forms an edge protection body with the transverse connecting rod, completing the device installation. S400: Pull the safety rope to make the spring safety pin away from the bevel gear scale wheel, release the gear reverse rotation limit, release the first safety; pull the hand handle on the top of the hand safety pin, overcome the resistance of the reset spring, the "L" type end of the hand safety pin is lifted, away from the tooth groove of the bevel gear scale wheel, so that the hand safety pin releases the locking function, and the second safety is released; the back reset spring of the force transmission tooth rod is instantly opened, the force transmission tooth rod is reversely reset, the fastening fork is opened away from the back of the step, and the clamping state is released; S500: horizontally pull out the device to make the fixed fork away from the fastening fork of the stair step, vertically pull out the protection vertical rod, and complete the removal.

[0039] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A quick installation and removal device for stair edge protection, characterized in that: It includes a clamping component embedded in the stair tread, a transmission component that drives the clamping component to be embedded in the stair tread by a transmission force, a limiting component that ensures that the transmission component does not deviate or fall when moving, and a component that locks or releases the transmission component so that the clamping component clamps or detaches from the stair tread, wherein: The clamping component comprises a support base (1), two mutually perpendicular fixed forks (2) mounted at the ends of the support base (1), and a movable fastening fork (3); The transmission component comprises a reinforced capstan (4) and a power transmission gear rod (5), wherein the reinforced capstan (4) comprises a power transmission gear (401) and a helical tooth scale wheel (402) connected concentrically and hollowly, wherein the hollow portion is embedded in the fixed axis of the support base (1) and can rotate around the fixed axis; the power transmission gear rod (5) is in the shape of a rectangular strip, and is provided with power transmission serrations on one side thereof for meshing with the power transmission gear (401), and the end portion is movably connected to the fastening fork (3); The locking component comprises a hand-held locking pin (12) hinged on the rod sleeve (6) and having an end engaged with a tooth groove of the helical tooth scale wheel (402), and a spring safety pin (13) fixed to the support base (1) and engaged with the tooth groove of the helical tooth scale wheel (402).

2. A quick installation and removal device for stair edge protection according to claim 1, characterized in that: The transmission component further comprises a rod sleeve (6), the bottom of which is rotatably connected to the fixed shaft.

3. A quick installation and removal device for stair edge protection according to claim 1, characterized in that: The limiting component includes a bearing-shaped limiting roller (7), which is fixed on the support base (1), including a first limiting roller (701), a second limiting roller (702) and a third limiting roller (703) which are dispersedly arranged and closely attached to the back of the force transmission gear rod (5).

4. A quick installation and removal device for stair edge protection according to claim 3, characterized in that: The limiting component further comprises a first limiting buckle (801) and a second limiting buckle (802) located on the gear side of the force transmission gear rod (5), wherein one end of the first limiting buckle (801) is rigidly connected to the support base (1), and the other end is rigidly connected to the limiting rod (9); one end of the second limiting buckle (802) is rigidly connected to the support base (1), and the other end passes through the hollow portion of the third limiting roller (703) and is rigidly connected to the support base (1).

5. A quick installation and removal device for stair edge protection according to claim 4, characterized in that: The limiting component further comprises a limiting rod (9) connected to the top end of the first limiting roller (701) for limiting the rod sleeve (6) from rotating in the upward direction of the stairs. The lower portion of the limiting rod (9) passes through the hollow portion of the first limiting roller (701) and is rigidly connected to the supporting base (1). The limiting rod (9) is rigidly connected to the first limiting buckle (801) between the first limiting roller (701) and the limiting rod (9).

6. A quick installation and removal device for stair edge protection according to claim 5, characterized in that: The limiting component further comprises an anti-slip plate (11) mounted on the top of the force transmission gear rod (5) and an anti-slip rod (10) connected to the first limiting buckle (801).

7. A quick installation and removal device for stair edge protection according to any one of claims 1 to 6, characterized in that: The locking component also includes a first return spring (1401) and a second return spring (1402), wherein the first return spring (1401) is located at the tooth back end of the force transmission gear rod (5), one end of which is connected to the connection node between the first limiting roller (701) and the first limiting buckle (801), and the other end is connected to the end of the anti-slip plate (11); the second return spring (1402) is located below the hinge of the hand-held locking pin (12), one end of which is connected to the rod sleeve (6), and the other end of which is connected to the lower part of the hand-held locking pin (12).

8. A quick installation and removal device for stair edge protection according to any one of claims 1 to 6, characterized in that: The spring safety pin (13) is provided with a safety hanging rope (1301).

9. A quick installation and removal device for stair edge protection according to any one of claims 1 to 6, characterized in that: It also includes a protective upright pole (15) inserted into the pole sleeve (6).

10. A method for quickly installing and removing stair edge protection, implemented using a quick installation and removal device for stair edge protection according to any one of claims 1 to 9, characterized in that: The specific steps include: S100: Adjust the angles of the two fixing forks and the fastening fork according to the stair treads, and push the device horizontally inward from the side of the stair tread. The fixing fork is clamped on the front edge of the tread at the top, and the fastening fork is suspended on the back of the stair tread at the bottom. S200: Insert the protective pole vertically into the pole sleeve and repeatedly bend the protective pole toward the lower part of the stairs, which drives the reinforcement hinge to rotate. The transmission gear pushes the transmission gear rod to move linearly toward the inside of the stairs, driving the fastening fork to tighten upward until the fastening fork and the fixed fork clamp the stair tread. S300: Swing the guardrail back to the vertical angle specified by the limit rod. The hand-held locking pin and the spring safety pin will automatically take effect, and the device will enter the double locking state. The guardrail serves as a guardrail support and forms an edge protection body with the transverse connecting rod, completing the device installation. S400: After the construction work is completed, pull the safety rope by hand to disengage the spring safety pin from the helical scale wheel, release the gear reversal restriction, and release the first safety; pull the portable locking pin upward to overcome the resistance of the reset spring, and the end of the portable locking pin is lifted and disengaged from the tooth groove of the helical scale wheel, so that the portable locking pin is released from the locking effect and releases the second safety; the reset spring on the back of the force transmission gear rod is instantly released, the force transmission gear rod is reset in the opposite direction, the fastening fork is released and disengaged from the back of the step, and the clamping state is released; S500: Pull out the protective upright vertically and pull out the device horizontally to separate the fixing fork and the fastening fork from the stair tread to complete the dismantling.

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