Soft ladder for metal roof panel installation and metal roof panel installation method

Abstract

The present invention discloses a flexible ladder for installing a metal roof panel and a method for installing a metal roof panel, comprising a flexible ladder structure, a fixing bracket and a purlin connecting plate, wherein the purlin connecting plate is fixedly connected to the purlin by fixing bolts. The method comprises: a. installing purlins; b. connecting the flexible ladder structure and buckles; c. coiling the flexible ladder structure; d. installing the flexible ladder structure on the purlins; e. installing a flexible ladder unfolding device; f. unfolding the flexible ladder structure; h. installing the metal roof panel; i. dismantling the flexible ladder structure. The present invention eliminates the need to directly install the flexible ladder on the top purlin of the building structure, and instead fixes the flexible ladder structure on a fixing bracket. The fixing bracket is a bracket of a rigid structure, and as a load-bearing component of the flexible ladder structure, the gravity on the flexible ladder structure and the construction personnel is evenly dispersed to the purlins, and the connection is reliable and highly safe.

Description

Technical Field

[0001] The invention belongs to the technical field of metal roof panel installation, and in particular relates to a soft ladder for installing a metal roof panel and a metal roof panel installation method. Background Art

[0002] With the continuous development of my country's industry, the market for industrial building construction such as large-span factories and dry coal sheds is expanding. The lattice shell structure is widely used in such construction projects because of its high rigidity, small structural deformation, high stability, material saving, the ability to form a variety of curved surfaces on the building's exterior, easy and fast installation, and mature and convenient calculation models. Among them, the single-layer three-center circle curved lattice shell with bolt ball nodes as the main connection method is more common. The lightweight metal maintenance structure of such projects is often paved with arc-shaped extra-long metal roof panels, and during the construction process, a soft ladder is often used from the top to the bottom for installation.

[0003] When using a soft ladder to carry out the actual construction and installation of metal roof panels, the following problems are prone to occur: one end of the load-bearing rope of the soft ladder is tied and connected to the top purlin of the building structure, and the connection reliability is low. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art, and to provide a soft ladder for installing a metal roof panel and a metal roof panel installation method. The present invention cancels the direct installation of the soft ladder on the top purlin of the building structure, but fixes the soft ladder structure on a fixed bracket. The fixed bracket is a bracket of a rigid structure, which serves as a load-bearing component of the soft ladder structure, and evenly disperses the gravity on the soft ladder structure and construction personnel to the purlin, so that the connection is reliable and the safety is high.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A flexible ladder for installing a metal roof panel, comprising:

[0007] The soft ladder structure, as a structure for people to ascend, is used to install the metal roof panels.

[0008] It is characterized by further comprising:

[0009] The fixed bracket is a rigid bracket on which the ladder structure is mounted. The fixed bracket is a load-bearing component of the ladder structure.

[0010] The purlin connecting plate is arranged on the fixed bracket, the purlin connecting plate is fixedly connected to the purlin by self-tapping screws, and the purlin connecting plate is used to increase the contact area between the fixed bracket and the purlin.

[0011] The present invention eliminates the need to directly install the soft ladder on the top purlin of the building structure, and instead fixes the soft ladder structure on a fixed bracket. The fixed bracket is a bracket of a rigid structure, which serves as a load-bearing component of the soft ladder structure and evenly distributes the gravity on the soft ladder structure and construction workers to the purlin, thereby ensuring reliable connection and high safety.

[0012] Furthermore, the fixed bracket includes a single first rod body and two second rod bodies, the two second rod bodies are symmetrically arranged at an angle and are arranged at the bottom of the first rod body, the purlin connecting plate is welded to the second rod bodies, and the fixed bracket is designed to be an inverted Y-shaped structure. The two second rod bodies are triangular in shape, which has good stability, and four connecting nodes are designed between the inverted Y-shaped fixed bracket and the purlin, which further increases the contact area between the fixed bracket and the purlin, increases the bearing capacity of the fixed bracket, and improves the safety of people on the soft ladder structure.

[0013] Furthermore, the first rod body and the second rod body are an integrally formed structure, so that the fixing bracket can be manufactured by integrally casting, thereby increasing the deformation resistance and fracture resistance of the fixing bracket.

[0014] Furthermore, it also includes a winding device, which includes a load-bearing connecting shaft, a soft ladder winding shaft and a winding handle. The load-bearing connecting shaft rotates between two fixed brackets, the soft ladder structure is installed on the load-bearing connecting shaft, and the soft ladder winding shaft is arranged on the load-bearing connecting shaft. The soft ladder winding shaft is used to increase the force area of ​​the soft ladder structure when it is wound. The winding handle is arranged on the load-bearing connecting shaft. By rotating the winding handle, the load-bearing connecting shaft and the soft ladder winding shaft can rotate synchronously on the fixed bracket, thereby achieving stable retraction and release of the soft ladder structure and improving the control efficiency of the soft ladder structure.

[0015] Furthermore, a sleeve is provided at the end of the load-bearing connecting shaft, the sleeve passes through the fixed bracket, the winding handle is provided with a handle connecting shaft, the handle connecting shaft is slidably connected to the sleeve, the fixed bracket is fixedly connected to a limit plate, the sleeve passes through the limit plate, the limit plate is provided with at least two limit holes, the limit holes are evenly distributed on the limit plate in the circumferential direction, the winding handle is provided with a limit shaft, the handle connecting shaft slides and is fixed on the sleeve, so that the limit shaft passes through the limit hole. The limit plate is fixed on the fixed bracket, the limit plate does not rotate, and the winding handle rotates on the fixed bracket, and the handle connecting shaft slides and is fixed on the sleeve to change the horizontal position of the winding handle. When the limit shaft passes through the limit hole, the winding handle does not rotate, and the load-bearing connecting shaft and the flexible ladder winding shaft can be limited, thereby limiting the flexible ladder structure and improving the stability of the flexible ladder structure.

[0016] Furthermore, the limiting shaft is provided with a limiting end, which is connected to the limiting shaft through a spring, and the sleeve is provided with at least two through holes, which are horizontally distributed on the sleeve. The limiting end and the through holes match to achieve sliding connection of the handle connecting shaft to the sleeve.

[0017] Furthermore, the metal roof panel of the present invention is installed from bottom to top, and when the metal roof panel is installed, the ladder structure is fully unfolded and laid on the purlin of the house, and the ladder structure is provided with a ladder pedal, which may cause structural damage such as crushing and scratching of the metal roof panel. Therefore, the present invention provides a rubber protective pad on the ladder pedal, and the rubber protective pad is in direct contact with the installed metal roof panel, so as to protect the installed metal roof panel and improve the installation quality of the metal roof panel.

[0018] Furthermore, the soft ladder structure is provided with a load-bearing rope, and the load-bearing rope is provided with a buckle, which is arranged on the load-bearing connecting shaft. The load-bearing connecting shaft is fixedly connected with a limiting clamp. The limiting clamp is a prior art, which is fixed by two clamp plates through connecting bolts. The limiting clamp limits the buckle on the load-bearing connecting shaft. Generally, the limiting clamp is tightly attached to the inner side of the buckle to prevent the soft ladder structure from moving on the load-bearing connecting shaft, and the soft ladder structure can be flexibly moved on the load-bearing connecting shaft by changing the position of the limiting clamp on the load-bearing connecting shaft, which is suitable for adjusting the installation position of the metal roof panel.

[0019] Furthermore, since the present invention adopts a winding device to stably retract and control the flexible ladder structure, the flexible ladder structure is piled up and entangled on the purlins due to a slight inclination of the house roof, which affects the complete deployment of the flexible ladder structure; and the flexible ladder structure is easily affected by the wind, and the flexible ladder structure is easy to hit the purlins during the deployment process, causing damage to the flexible ladder structure. Therefore, the present invention sets a flexible ladder deployment device on the fixed bracket, and the flexible ladder deployment device includes a mounting seat, a rotating seat, an adjustment plate, a connecting block and a steel pipe for laying the flexible ladder. The mounting seat is welded on the fixed bracket, and the rotating seat is arranged on the mounting seat by a first bolt, and the first bolt is arranged vertically. The adjusting plate is arranged on the rotating seat by a second bolt, the second bolt is arranged horizontally, the connecting block is provided with an embedded groove, the adjusting plate is embedded in the embedded groove, a fastening screw is arranged between the adjusting plate and the connecting block, ear plates are arranged at both ends of the steel pipe for laying the soft ladder, the ear plates are provided with a limit block, the limit block is arranged on the ear plate by a third bolt, the third bolt is arranged vertically, the connecting block is provided with a slot, a block is arranged at the bottom of the limit block, and the block is embedded in the slot. Since the rotating seat of the present invention is arranged on the mounting seat by the first bolt, and the first bolt is arranged vertically, the rotating seat can be rotated outward on the mounting seat in a horizontal plane. After the soft ladder laying steel pipe is installed, the distance between the soft ladder laying steel pipe and the fixed bracket can be increased. In the process of unfolding the soft ladder structure, the soft ladder laying steel pipe guides the just unfolded soft ladder structure, so that the soft ladder structure extends a certain distance outward on the fixed bracket, and then unfolds the soft ladder structure through the winding device. When the soft ladder structure is towed, the soft ladder structure can be fully unfolded. During the whole unfolding process, the soft ladder structure is not easy to touch the purlins, and the soft ladder structure is not easy to be entangled or piled up, so that the role of the soft ladder structure is fully exerted. Moreover, when the soft ladder structure is fully unfolded, under the guiding effect of the soft ladder laying steel pipe, the soft ladder structure is in an upward arched state, which is convenient for inspection of the soft ladder structure and avoids damage to the soft ladder structure and danger. Anti-skid patterns or rubber sleeves can be added to the steel pipe for laying the soft ladder, so as to appropriately increase the friction between the steel pipe for laying the soft ladder and the soft ladder structure, and improve the stability of the soft ladder structure on the steel pipe for laying the soft ladder. In addition, ear plates are provided at both ends of the steel pipe for laying the soft ladder, and the ear plates are provided with limit blocks, which are arranged on the ear plates through third bolts, and the third bolts are arranged vertically, and the connecting blocks are provided with slots, and the bottom of the limit blocks is provided with a block, and the block is embedded in the slot, so that the steel pipe for laying the soft ladder can be detachably connected on the fixed bracket. When the soft ladder structure is fully unfolded, the steel pipe for laying the soft ladder is removed from the fixed bracket, and the soft ladder structure can be laid on the purlin of the house as a whole, and the removed steel pipe for laying the soft ladder is used for the installation of the metal roof panel in the next span area.

[0020] The metal roof panel installation method is characterized by comprising the following steps:

[0021] a. Install purlins: Install purlins on the beams of the house and remeasure the elevation. Use the theodolite and level to lay out the installation reference line to ensure the accuracy of the subsequent installation.

[0022] b. Connect the load-bearing rope and buckle of the soft ladder structure.

[0023] c. Coiling ladder structure: Connect the buckle on the ladder structure to the load-bearing connecting shaft between the fixed brackets on the ground. By turning the winding handle, the load-bearing connecting shaft and the ladder winding shaft rotate synchronously on the fixed bracket. The ladder structure is rolled up on the load-bearing connecting shaft and the ladder winding shaft to complete the winding of the ladder structure, which is convenient for carrying and transportation of the entire ladder.

[0024] d. Install the coiled ladder structure onto the purlin: transport the completed coiled ladder structure to the construction site, and then fix the purlin connecting plate and purlin on the fixed bracket with self-tapping screws.

[0025] e. Install the ladder deployment device:

[0026] (1) Fix the rotating seat to the mounting seat on the fixed bracket by the first bolt, then fix the adjustment plate to the rotating seat by the second bolt, and then screw the fastening screw between the adjustment plate and the connecting block.

[0027] (2) Rotate the adjustment plate on a vertical plane with the second bolt as the axis. When the adjustment plate is in a horizontal state, tighten the nut on the second bolt so that the two connection blocks are symmetrically arranged.

[0028] (3) Rotate the rotating seat on the horizontal plane with the first bolt as the axis in a direction away from the fixed bracket to a set angle, which is generally 15-30 degrees, and then tighten the nut on the first bolt.

[0029] (4) The limit block is rotated on a horizontal plane with the third bolt as the axis toward the fixed bracket to a set angle, which is the same as the rotation angle of the rotating seat, and then the clamping block at the bottom of the limit block is embedded in the clamping groove of the connecting block.

[0030] f. Expand the soft ladder structure:

[0031] (1) A traction rope is set on the ladder pedal at the outermost end of the ladder structure, and then the winding handle is turned to rotate the ladder structure out of the load-bearing connecting shaft and the ladder winding shaft, and then the ladder structure is laid on the ladder laying steel pipe. Then the winding handle is continuously turned, and another construction worker pulls the traction rope at the same time. Pulling the traction rope can quickly unfold the ladder structure. The ladder structure is unfolded under the guidance of the ladder laying steel pipe until the ladder structure is fully extended, and then the unfolded ladder structure is inspected.

[0032] (2) After checking that everything is correct, fix the limit clamp on the load-bearing connecting shaft. The limit clamp is installed in the area between the two buckles, and the limit clamp is pressed against the buckles so that the buckles are limited on the load-bearing connecting shaft.

[0033] (3) Remove the block at the bottom of the limit block from the slot of the connecting block, take out the ladder as a whole to lay the steel pipe, and then pull the traction rope to lay the entire ladder structure on the purlin of the house.

[0034] g. Install a lifeline on the purlin near the installation position of the soft ladder structure. The length of the lifeline is the same as the length of the soft ladder structure. A snap ring is provided on the lifeline to connect with the snap ring installed on the construction workers. The lifeline is designed according to the soft ladder structure to improve the safety of the construction workers on the soft ladder structure.

[0035] h. Metal roof panel installation:

[0036] (1) The metal roof panel to be installed is hoisted to the designed installation position on the house. Then the construction workers climb up the soft ladder structure, tie the lifeline, and then pull the metal roof panel for installation. When the first metal roof panel is fixed in place, a continuous alignment line is drawn at the end and top of the first metal roof panel to facilitate the alignment and quick fixation of the subsequent metal roof panels.

[0037] (2) The overall metal roof panel is installed in sections from bottom to top. The corresponding overlap lengths between adjacent metal roof panel units in the same span and between metal roof panels in adjacent span areas shall be set according to the specifications and fixed according to the design requirements after adjustment.

[0038] i. Dismantle the soft ladder structure:

[0039] (1) After completing the installation of the metal roof panel, the construction worker untied the lifeline, left the ladder structure, turned the winding handle, so that the load-bearing connecting shaft and the ladder winding shaft rotated synchronously on the fixed bracket, and rolled up the ladder structure on the load-bearing connecting shaft and the ladder winding shaft to complete the winding of the ladder structure. Then, the nut of the second bolt was loosened, and the adjustment plate was rotated on the vertical plane with the second bolt as the axis. When the adjustment plate was in a vertical state, the nut on the second bolt was tightened.

[0040] (2) Remove the self-tapping screws between the purlin connecting plate and the purlin on the fixing bracket.

[0041] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0042] 1. The present invention eliminates the need to directly install the soft ladder on the top purlin of the building structure, but instead fixes the soft ladder structure on a fixed bracket. The fixed bracket is a rigid structure bracket, which serves as a load-bearing component of the soft ladder structure. The gravity of the soft ladder structure and the construction workers is evenly distributed on the purlin, with reliable connection and high safety.

[0043] 2. If the present invention directly adopts the method of throwing to unfold the soft ladder structure, it is easy to cause damage to the soft ladder structure and the building structure, which is highly dangerous. Therefore, the present invention adopts a winding device to gradually, stably and safely unfold the soft ladder structure. The specific structure is: the winding device includes a load-bearing connecting shaft, a soft ladder winding shaft and a winding handle. The load-bearing connecting shaft rotates between two fixed brackets. The soft ladder structure is installed on the load-bearing connecting shaft. The soft ladder winding shaft is arranged on the load-bearing connecting shaft. The soft ladder winding shaft is used to increase the force area of ​​the soft ladder structure winding. The winding handle is arranged on the load-bearing connecting shaft. By rotating the winding handle, the load-bearing connecting shaft and the soft ladder winding shaft can be rotated synchronously on the fixed bracket, so as to achieve stable retraction and release of the soft ladder structure and improve the control efficiency of the soft ladder structure.

[0044] 3. The soft ladder structure of the present invention is provided with a load-bearing rope, and the load-bearing rope is provided with a buckle, which is arranged on the load-bearing connecting shaft. The load-bearing connecting shaft is fixedly connected with a limiting clamp. The limiting clamp is a prior art, which is fixed by two clamping plates through bolts. The limiting clamp limits the buckle on the load-bearing connecting shaft. Generally, the limiting clamp is tightly attached to the inner side of the buckle to prevent the soft ladder structure from moving on the load-bearing connecting shaft. Moreover, by changing the position of the limiting clamp on the load-bearing connecting shaft, the soft ladder structure can be flexibly moved on the load-bearing connecting shaft, which is suitable for adjusting the installation position of the metal roof panel.

[0045] 4. Since the present invention adopts a winding device to stably retract and control the flexible ladder structure, the flexible ladder structure is piled up and entangled on the purlins due to a slight inclination of the house roof, which affects the complete deployment of the flexible ladder structure; and the flexible ladder structure is easily affected by the wind, and the flexible ladder structure is easy to hit the purlins during the deployment process, causing damage to the flexible ladder structure. Therefore, the present invention sets a flexible ladder deployment device on the fixed bracket, and the flexible ladder deployment device includes a mounting seat, a rotating seat, an adjustment plate, a connecting block and a steel pipe for laying the flexible ladder. The mounting seat is welded on the fixed bracket, and the rotating seat is set on the mounting seat through a first bolt, and the first bolt is set vertically. The adjusting plate is arranged on the rotating seat by a second bolt, the second bolt is arranged horizontally, the connecting block is provided with an embedded groove, the adjusting plate is embedded in the embedded groove, a fastening screw is arranged between the adjusting plate and the connecting block, ear plates are arranged at both ends of the steel pipe for laying the soft ladder, the ear plates are provided with a limit block, the limit block is arranged on the ear plate by a third bolt, the third bolt is arranged vertically, the connecting block is provided with a slot, a block is arranged at the bottom of the limit block, and the block is embedded in the slot. Since the rotating seat of the present invention is arranged on the mounting seat by the first bolt, and the first bolt is arranged vertically, the rotating seat can be rotated outward on the mounting seat in a horizontal plane. After the soft ladder laying steel pipe is installed, the distance between the soft ladder laying steel pipe and the fixed bracket can be increased. In the process of unfolding the soft ladder structure, the soft ladder laying steel pipe guides the just unfolded soft ladder structure, so that the soft ladder structure extends a certain distance outward on the fixed bracket, and then unfolds the soft ladder structure through the winding device. When the soft ladder structure is towed, the soft ladder structure can be fully unfolded. During the whole unfolding process, the soft ladder structure is not easy to touch the purlins, and the soft ladder structure is not easy to be entangled or piled up, so that the role of the soft ladder structure is fully exerted. Moreover, when the soft ladder structure is fully unfolded, under the guiding effect of the soft ladder laying steel pipe, the soft ladder structure is in an upward arched state, which is convenient for inspection of the soft ladder structure and avoids damage to the soft ladder structure and danger. Anti-skid patterns or rubber sleeves can be added to the steel pipe for laying the soft ladder, so as to appropriately increase the friction between the steel pipe for laying the soft ladder and the soft ladder structure, and improve the stability of the soft ladder structure on the steel pipe for laying the soft ladder. In addition, ear plates are provided at both ends of the steel pipe for laying the soft ladder, and the ear plates are provided with limit blocks, which are arranged on the ear plates through third bolts, and the third bolts are arranged vertically, and the connecting blocks are provided with slots, and the bottom of the limit blocks is provided with a block, and the block is embedded in the slot, so that the steel pipe for laying the soft ladder can be detachably connected on the fixed bracket. When the soft ladder structure is fully unfolded, the steel pipe for laying the soft ladder is removed from the fixed bracket, and the soft ladder structure can be laid on the purlin of the house as a whole, and the removed steel pipe for laying the soft ladder is used for the installation of the metal roof panel in the next span area.

[0046] 5. The present invention adopts the supporting function of the fixed bracket and the purlin connecting plate, the winding device for winding and unfolding the soft ladder structure, the limiting clamp for the soft ladder structure, and the guiding function of the soft ladder unfolding device during the unfolding process, so that the present invention can install the metal roof panels of the same section unit, solves the danger of hanging and directly installing the metal roof panels, ensures that the corresponding overlap lengths are set between two adjacent metal roof panel units in the same span and between metal roof panel units in adjacent span areas according to the specifications, and meets the design requirements for metal roof panel installation.

[0047] 6. All parts of the present invention are finished products, the whole process is simple to operate, the device uses green steel and can be reused. In addition, the present invention has clear principles, easy implementation and operation, and general control requirements, and is easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the accompanying drawings:

[0049] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0050] Figure 2 It is a structural schematic diagram of the connection between the purlin connecting plate and the fixing bracket in the first embodiment of the present invention;

[0051] Figure 3 Schematic diagram of the structure of the connection between the purlin connecting plate and the purlin in the first embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram of the structure of the limiting clamp and the limiting buckle in the first embodiment of the present invention;

[0053] Figure 5 for Figure 4 Left view of

[0054] Figure 6 This is a schematic diagram of the structure of the rubber protective pad and the installed metal roof panel in the first embodiment of the present invention;

[0055] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0056] Figure 8 It is a schematic diagram of the structure of the limiting plate in the second embodiment of the present invention;

[0057] Fig. 9 This is a structural schematic diagram of the handle connecting shaft being slidably connected to the sleeve in the second embodiment of the present invention;

[0058] Fig.10 for Figure 8 Right view of;

[0059] Fig.11This is a schematic diagram of the structure of the third embodiment of the present invention (the steel pipe is laid without installing a ladder);

[0060] Fig.12 This is a structural schematic diagram of the soft ladder deployment device in Embodiment 3 of the present invention when the soft ladder structure is deployed;

[0061] Fig.13 Schematic diagram of the structure of the soft ladder deployment device in the third embodiment of the present invention;

[0062] Fig.14 It is a schematic diagram of the structure of the connection between the mounting seat, the rotating seat, the adjustment plate and the connecting block in the third embodiment of the present invention;

[0063] Fig.15 This is a schematic diagram of the structure of laying steel pipes for a flexible ladder in Embodiment 3 of the present invention.

[0064] In the figure, 1-soft ladder structure; 2-fixed bracket; 3-purlin connecting plate; 4-purlin; 5-first rod body; 6-second rod body; 7-winding device; 8-load-bearing connecting shaft; 9-soft ladder winding shaft; 10-winding handle; 11-load-bearing rope; 12-soft ladder pedal; 13-buckle; 14-limiting clamp; 15-rubber protection pad; 16-metal roof panel; 17-limiting plate; 18-handle connecting shaft; 19-limiting end; 20-sleeve; 21-through hole; 22-limiting shaft; 23-limiting hole; 24-mounting seat; 25-rotating seat; 26-adjusting plate; 27-connecting block; 28-limiting block; 29-ear plate; 30-soft ladder laying steel pipe; 31-first bolt; 32-second bolt; 33-fastening screw; 34-third bolt; 35-slot; 36-block. DETAILED DESCRIPTION

[0065] like Figures 1 to 6 As shown, this is the first embodiment of the present invention.

[0066] A flexible ladder for installing a metal roof panel comprises a flexible ladder structure 1, a fixed bracket 2 and a purlin connecting plate 3. The flexible ladder structure 1 is used as a structure for people to go up and install the metal roof panel 16. The flexible ladder structure 1 is arranged on the fixed bracket 2. The fixed bracket 2 is a bracket of a rigid structure and serves as a load-bearing component of the flexible ladder structure 1. The purlin connecting plate 3 is arranged on the fixed bracket 2. The purlin connecting plate 3 is fixedly connected to the purlin 4 by self-tapping screws. The purlin connecting plate 3 is used to increase the contact area between the fixed bracket 2 and the purlin 4. The present invention eliminates the need to directly install the flexible ladder on the purlin 4 at the top of the building structure. Instead, the flexible ladder structure 1 is fixed on the fixed bracket 2. The fixed bracket 2 is a bracket of a rigid structure and serves as a load-bearing component of the flexible ladder structure 1. The gravity on the flexible ladder structure 1 and the construction personnel is evenly distributed to the purlin 4. The connection is reliable and the safety is high.

[0067] The fixed bracket 2 includes a single first rod 5 and two second rods 6, the two second rods 6 are symmetrically arranged at an angle and are arranged at the bottom of the first rod 5, the purlin connecting plate 3 is welded to the second rod 6, the fixed bracket 2 is designed as an inverted Y-shaped structure, the two second rods 6 are triangular, and have good stability, and four connection nodes are designed between the inverted Y-shaped fixed bracket 2 and the purlin 4, further increasing the contact area between the fixed bracket 2 and the purlin 4, increasing the bearing capacity of the fixed bracket 2, and improving the safety of people on the soft ladder structure 1. The first rod 5 and the second rod 6 are an integrated structure, so that the fixed bracket 2 can be manufactured by casting and molding, and the deformation and fracture resistance of the fixed bracket 2 are increased.

[0068] If the present invention directly adopts the method of throwing to unfold the flexible ladder structure 1, it is easy to cause the flexible ladder structure 1 to be damaged and the building structure to be damaged, which is highly dangerous. Therefore, the present invention designs a winding device 7, which includes a load-bearing connecting shaft 8, a flexible ladder winding shaft 9 and a winding handle 10. The load-bearing connecting shaft 8 rotates between two fixed brackets 2. The flexible ladder structure 1 is installed on the load-bearing connecting shaft 8. The flexible ladder winding shaft 9 can be welded on the load-bearing connecting shaft 8. The flexible ladder winding shaft 9 is used to increase the force bearing area of ​​the flexible ladder structure 1. The winding handle 10 is arranged on the load-bearing connecting shaft 8. By rotating the winding handle 10, the load-bearing connecting shaft 8 and the flexible ladder winding shaft 9 can be rotated synchronously on the fixed bracket 2, so as to achieve stable retraction and release of the flexible ladder structure 1 and improve the control efficiency of the flexible ladder structure 1.

[0069] The metal roof panel 16 of the present invention is installed from bottom to top, and when the metal roof panel 16 is installed, the flexible ladder structure 1 is fully unfolded and laid on the purlin 4 of the house, and the flexible ladder structure 1 is provided with a flexible ladder pedal 12, which may cause structural damage such as crushing and scratching of the metal roof panel 16. Therefore, the present invention provides a rubber protective pad 15 on the flexible ladder pedal 12, and the rubber protective pad 15 is in direct contact with the installed metal roof panel 16, so as to protect the installed metal roof panel 16 and improve the installation quality of the metal roof panel 16.

[0070] The flexible ladder structure 1 is provided with a load-bearing rope 11, and the load-bearing rope 11 is provided with a buckle 13. The buckle 13 is elliptical in shape and is arranged on the load-bearing connecting shaft 8. The load-bearing connecting shaft 8 is fixedly connected with a limiting clamp 14. The limiting clamp 14 is a prior art, which is fixed by two clamp plates through connecting bolts. The limiting clamp 14 limits the buckle 13 on the load-bearing connecting shaft 8. Generally, the limiting clamp 14 is tightly attached to the inner side of the buckle 13 to prevent the flexible ladder structure 1 from moving on the load-bearing connecting shaft 8, and by changing the position of the limiting clamp 14 on the load-bearing connecting shaft 8, the flexible ladder structure 1 can be flexibly moved on the load-bearing connecting shaft 8, which is suitable for adjusting the installation position of the metal roof panel 16.

[0071] like Figures 7 to 10 As shown, this is the second embodiment of the present invention.

[0072] A flexible ladder for installing a metal roof panel comprises a flexible ladder structure 1, a fixed bracket 2 and a purlin connecting plate 3. The flexible ladder structure 1 is used as a structure for people to go up and install the metal roof panel 16. The flexible ladder structure 1 is arranged on the fixed bracket 2. The fixed bracket 2 is a bracket of a rigid structure and serves as a load-bearing component of the flexible ladder structure 1. The purlin connecting plate 3 is arranged on the fixed bracket 2. The purlin connecting plate 3 is fixedly connected to the purlin 4 by self-tapping screws. The purlin connecting plate 3 is used to increase the contact area between the fixed bracket 2 and the purlin 4. The present invention eliminates the need to directly install the flexible ladder on the purlin 4 at the top of the building structure. Instead, the flexible ladder structure 1 is fixed on the fixed bracket 2. The fixed bracket 2 is a bracket of a rigid structure and serves as a load-bearing component of the flexible ladder structure 1. The gravity on the flexible ladder structure 1 and the construction personnel is evenly distributed to the purlin 4. The connection is reliable and the safety is high.

[0073] The fixed bracket 2 includes a single first rod 5 and two second rods 6, the two second rods 6 are symmetrically arranged at an angle and are arranged at the bottom of the first rod 5, the purlin connecting plate 3 is welded to the second rod 6, the fixed bracket 2 is designed as an inverted Y-shaped structure, the two second rods 6 are triangular, and have good stability, and four connection nodes are designed between the inverted Y-shaped fixed bracket 2 and the purlin 4, further increasing the contact area between the fixed bracket 2 and the purlin 4, increasing the bearing capacity of the fixed bracket 2, and improving the safety of people on the soft ladder structure 1. The first rod 5 and the second rod 6 are an integrated structure, so that the fixed bracket 2 can be manufactured by casting and molding, and the deformation and fracture resistance of the fixed bracket 2 are increased.

[0074] If the present invention directly adopts the method of throwing to unfold the soft ladder structure 1, it is easy to cause the soft ladder structure 1 to be damaged and the building structure to be damaged, which is highly dangerous. Therefore, the present invention designs a winding device 7, which includes a load-bearing connecting shaft 8, a soft ladder winding shaft 9 and a winding handle 10. The load-bearing connecting shaft 8 rotates between two fixed brackets 2. The soft ladder structure 1 is installed on the load-bearing connecting shaft 8. The soft ladder winding shaft 9 is arranged on the load-bearing connecting shaft 8. The soft ladder winding shaft 9 is used to increase the force bearing area of ​​the soft ladder structure 1. The winding handle 10 is arranged on the load-bearing connecting shaft 8. By rotating the winding handle 10, the load-bearing connecting shaft 8 and the soft ladder winding shaft 9 are synchronously rotated on the fixed bracket 2, so as to achieve stable retraction and release of the soft ladder structure 1 and improve the control efficiency of the soft ladder structure 1.

[0075] A sleeve 20 is provided at the end of the load-bearing connecting shaft 8, and the sleeve 20 passes through the fixed bracket 2. The winding handle 10 is provided with a handle connecting shaft 18, and the handle connecting shaft 18 is slidably connected to the sleeve 20. The fixed bracket 2 is fixedly connected to the limiting disk 17, and the sleeve 20 passes through the limiting disk 17. The limiting disk 17 is provided with at least two limiting holes 23, and the limiting holes 23 are evenly distributed on the limiting disk 17 in a circumferential direction. The winding handle 10 is provided with a limiting shaft 22, which slides and is fixed on the sleeve 20 through the handle connecting shaft 18, so that the limiting shaft 22 passes through the limiting hole 23. The limit plate 17 is fixed on the fixed bracket 2. The limit plate 17 does not rotate, while the winding handle 10 rotates on the fixed bracket 2. The handle connecting shaft 18 slides and is fixed on the sleeve 20 to change the horizontal position of the winding handle 10. When the limit shaft 22 passes through the limit hole 23, the winding handle 10 does not rotate, and the load-bearing connecting shaft 8 and the soft ladder winding shaft 9 can be limited, thereby limiting the soft ladder structure 1 and improving the stability of the soft ladder structure 1.

[0076] The limit shaft 22 is provided with a limit end 19, and the limit end 19 is connected to the limit shaft 22 through a spring. The sleeve 20 is provided with at least two through holes 21, and the through holes 21 are horizontally distributed on the sleeve 20. The limit end 19 and the through holes 21 match to realize the sliding connection of the handle connecting shaft 18 on the sleeve 20.

[0077] like Figures 11 to 15 As shown, this is the third embodiment of the present invention.

[0078] Since the present invention uses the winding device 7 to stably retract and control the flexible ladder structure 1, the flexible ladder structure 1 is piled up and entangled on the purlin 4 due to the slight inclination of the house roof, which affects the complete deployment of the flexible ladder structure 1; and the flexible ladder structure 1 is easily affected by the wind, and the flexible ladder structure 1 is easy to hit the purlin 4 during the deployment process, causing damage to the flexible ladder structure 1. Therefore, based on the structure of the first embodiment, the present invention adds a device for guiding the flexible ladder structure 1, which is specifically:

[0079] A flexible ladder deployment device is arranged on the fixed bracket 2, and the flexible ladder deployment device includes a mounting seat 24, a rotating seat 25, an adjustment plate 26, a connecting block 27 and a flexible ladder laying steel pipe 30. The mounting seat 24 is welded on the fixed bracket 2, and the rotating seat 25 is arranged on the mounting seat 24 by a first bolt 31, and the first bolt 31 is arranged vertically. The adjustment plate 26 is arranged on the rotating seat 25 by a second bolt 32, and the second bolt 32 is arranged horizontally. The connecting block 27 is provided with an embedded groove, and the adjustment plate 26 is embedded in the embedded groove. A fastening screw 33 is arranged between the adjustment plate 26 and the connecting block 27. The two ends of the flexible ladder laying steel pipe 30 are provided with ear plates 29, and the ear plates 29 are provided with a limit block 28. The limit block 28 is arranged on the ear plate 29 by a third bolt 34, and the third bolt 34 is arranged vertically. The connecting block 27 is provided with a clamping groove 35, and a clamping block 36 is arranged at the bottom of the limit block 28, and the clamping block 36 is embedded in the clamping groove 35. Since the rotating seat 25 of the present invention is arranged on the mounting seat 24 by the first bolt 31, the first bolt 31 is arranged vertically, so that the rotating seat 25 rotates outward on the mounting seat 24 in a horizontal plane. After the soft ladder laying steel pipe 30 is installed, the distance between the soft ladder laying steel pipe 30 and the fixed bracket 2 can be increased. In the process of unfolding the soft ladder structure 1, the soft ladder laying steel pipe 30 guides the just unfolded soft ladder structure 1, so that the soft ladder structure 1 extends a certain distance outward on the fixed bracket 2, and then the soft ladder structure 1 is unfolded by the winding device 7. When the soft ladder structure 1 is pulled, the soft ladder structure 1 can be fully unfolded. During the entire unfolding process, the soft ladder structure 1 is not easy to touch the purlin 4, and the soft ladder structure 1 is not easy to be entangled or piled up, so that the role of the soft ladder structure 1 is fully exerted. Moreover, when the soft ladder structure 1 is fully unfolded, under the guiding effect of the soft ladder laying steel pipe 30, the soft ladder structure 1 is in an upward arched state, which is convenient for the inspection of the soft ladder structure 1 and avoids the damage of the soft ladder structure 1 and the danger. Anti-skid patterns or rubber sleeves can be added to the steel pipe 30 for laying the ladder, and the friction between the steel pipe 30 and the ladder structure 1 can be appropriately increased to improve the stability of the ladder structure 1 on the steel pipe 30. In addition, ear plates 29 are provided at both ends of the steel pipe 30 for laying the ladder, and the ear plates 29 are provided with limit blocks 28. The limit blocks 28 are arranged on the ear plates 29 through third bolts 34, and the third bolts 34 are arranged vertically. The connecting block 27 is provided with a card slot 35, and the bottom of the limit block 28 is provided with a card block 36, and the card block 36 is embedded in the card slot 35, so that the steel pipe 30 for laying the ladder can be detachably connected to the fixed bracket 2. When the ladder structure 1 is fully unfolded, the steel pipe 30 for laying the ladder is removed from the fixed bracket 2, and the ladder structure 1 can be laid on the purlin 4 of the house as a whole. The removed steel pipe 30 for laying the ladder is used for the installation of the metal roof panel 16 in the next span area.

[0080] The metal roof panel installation method uses the third embodiment to install the metal roof panel 16, and specifically includes the following steps:

[0081] a. Install purlin 4: Install purlin 4 on the beam of the house, re-measure the elevation, and then use the theodolite and level to lay out the installation reference line to ensure the accuracy of the subsequent installation of the metal roof panel.

[0082] b. Connect the load-bearing rope 11 and the buckle 13 of the soft ladder structure 1.

[0083] c. Coiling the soft ladder structure 1: Connect the buckle 13 on the soft ladder structure 1 to the load-bearing connecting shaft 8 between the fixed brackets 2 on the ground, and rotate the winding handle 10 to make the load-bearing connecting shaft 8 and the soft ladder winding shaft 9 rotate synchronously on the fixed bracket 2, and reel the soft ladder structure 1 onto the load-bearing connecting shaft 8 and the soft ladder winding shaft 9 to complete the winding of the soft ladder structure 1, so that the whole soft ladder can be carried and transported conveniently.

[0084] d. Install the coiled soft ladder structure 1 onto the purlin 4: transport the coiled soft ladder structure 1 to the construction site, and then fix the purlin connecting plate 3 and the purlin 4 on the fixing bracket 2 with self-tapping screws.

[0085] e. Install the ladder deployment device:

[0086] (1) The rotating seat 25 is fixed to the mounting seat 24 on the fixed bracket 2 by means of the first bolt 31 , and then the adjusting plate 26 is fixed to the rotating seat 25 by means of the second bolt 32 , and then the fastening screw 33 is screwed in between the adjusting plate 26 and the connecting block 27 .

[0087] (2) The adjustment plate 26 is rotated on a vertical plane with the second bolt 32 as the axis. When the adjustment plate 26 is in a horizontal state, the nut on the second bolt 32 is tightened so that the two connection blocks 27 are symmetrically arranged.

[0088] (3) The rotating seat 25 is rotated on a horizontal plane by a set angle away from the fixed bracket 2 with the first bolt 31 as the axis. The angle is generally 15-30 degrees, and then the nut on the first bolt 31 is tightened.

[0089] (4) The limit block 28 is rotated on a horizontal plane with the third bolt 34 as the axis toward the fixed bracket 2 to a set angle, which is the same as the rotation angle of the rotating seat 25, and then the clamping block 36 at the bottom of the limit block 28 is embedded in the clamping groove 35 of the connecting block 27.

[0090] f. Expand the soft ladder structure 1:

[0091] (1) A traction rope is set on the ladder pedal 12 at the outermost end of the ladder structure 1, and then the winding handle 10 is rotated to rotate the ladder structure 1 out of the load-bearing connecting shaft 8 and the ladder winding shaft 9, and then the ladder structure 1 is laid on the ladder laying steel pipe 30, and then the winding handle 10 is continuously rotated, and at the same time, another construction worker pulls the traction rope, and the traction rope can be pulled to quickly unfold the ladder structure 1. The ladder structure 1 is unfolded under the guidance of the ladder laying steel pipe 30 until the ladder structure 1 is fully extended, and then the unfolded ladder structure 1 is inspected.

[0092] (2) After checking that everything is correct, fix the limit clamp 14 on the load-bearing connecting shaft 8. The limit clamp 14 is installed in the area between the two buckles 13, and the limit clamp 14 is tightly attached to the buckles 13 so that the buckles 13 are limited on the load-bearing connecting shaft 8.

[0093] (3) Remove the clamping block 36 at the bottom of the limit block 28 from the clamping groove 35 of the connecting block 27, take out the ladder laying steel pipe 30 as a whole, and then pull the traction rope to lay the ladder structure 1 as a whole on the purlin 4 of the house.

[0094] g. Install a lifeline on the purlin 4 near the installation position of the soft ladder structure 1. The length of the lifeline is the same as that of the soft ladder structure 1. A buckle ring is provided on the lifeline to connect with the buckle installed on the construction personnel. The lifeline is designed according to the soft ladder structure 1 to improve the safety of the construction personnel on the soft ladder structure 1.

[0095] h. Installation of metal roof panel 16:

[0096] (1) The metal roof panel 16 to be installed is hoisted to the designed installation position on the house. Then the construction personnel climb up the soft ladder structure 1, tie the lifeline, and then pull the metal roof panel 16 for installation. When the first metal roof panel 16 is fixed in place, a continuous alignment line is drawn at the end and top of the first metal roof panel 16 to facilitate the alignment and rapid fixation of the subsequent metal roof panels 16.

[0097] (2) The integral metal roof panels 16 are installed in sections from bottom to top. The corresponding overlap lengths between adjacent metal roof panels 16 units in the same span and between metal roof panels 16 in adjacent span areas shall be set according to the specification requirements, and after being adjusted in place, they shall be fixed according to the design requirements.

[0098] i. Dismantle the soft ladder structure 1:

[0099] (1) After completing the installation of the metal roof panel 16, the construction personnel untie the lifeline, leave the flexible ladder structure 1, and rotate the winding handle 10. The rotation direction of the winding handle 10 is opposite to the rotation direction of the winding handle 10 in step f, so that the load-bearing connecting shaft 8 and the flexible ladder winding shaft 9 rotate synchronously on the fixed bracket 2, and the flexible ladder structure 1 is rolled up on the load-bearing connecting shaft 8 and the flexible ladder winding shaft 9 to complete the winding of the flexible ladder structure 1. Then, the nut of the second bolt 32 is loosened, and the adjustment plate 26 is rotated on the vertical plane with the second bolt 32 as the axis. When the adjustment plate 26 is in a vertical state, the nut on the second bolt 32 is tightened.

[0100] (2) The self-tapping screws between the purlin connecting plate 3 and the purlin 4 on the fixing bracket 2 are removed, and the fixing bracket 2 can be used to install the metal roof panel in the next span area.

[0101] After the metal roof panels in each span area are installed, the installation of the metal roof panels for the entire project is completed.

[0102] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A flexible ladder for installing a metal roof panel, including a flexible ladder structure; the characteristics of which are: The cam is connected to the support frame by a toothed structure, and the toothed structure is connected to the support frame by a toothed structure. The cam is connected to the support frame by a toothed structure, and the toothed structure is connected to the support frame by a toothed structure. The whole plate, connecting block and soft ladder laying steel pipe, the mounting seat is welded on the fixing bracket, the rotating seat is arranged on the mounting bracket by a first bolt, the first bolt is arranged vertically, the adjusting plate is arranged on the rotating seat by a second bolt, the second bolt is arranged horizontally, the connecting block is provided with an embedded groove, the adjusting plate is embedded in the embedded groove, a fastening screw is arranged between the adjusting plate and the connecting block, ear plates are provided at both ends of the soft ladder laying steel pipe, the ear plate is provided with a limit block, the limit block is arranged on the ear plate by a third bolt, the third bolt is arranged vertically, the connecting block is provided with a slot, a block is provided at the bottom of the limit block, and the block is embedded in the slot, the fixing bracket comprises a single first rod body and two second rod bodies, two second rod bodies arranged symmetrically at an angle are arranged at the bottom of the first rod body, and the purlin connecting plate is welded to the second rod body.

2. The metal roof panel installation ladder according to claim 1, characterized in that: The first rod body and the second rod body are an integrally formed structure.

3. The flexible ladder for installing a metal roof panel according to claim 1, characterized in that: A sleeve is provided at the end of the load-bearing connecting shaft, and the sleeve passes through the fixed bracket. The winding handle is provided with a handle connecting shaft, and the handle connecting shaft is slidably connected to the sleeve. The fixed bracket is fixedly connected to a limiting disk, and the sleeve passes through the limiting disk. The limiting disk is provided with at least two limiting holes, and the limiting holes are evenly distributed on the limiting disk in a circumferential direction. The winding handle is provided with a limiting shaft, which slides and is fixed on the sleeve through the handle connecting shaft, so that the limiting shaft passes through the limiting hole.

4. The flexible ladder for installing a metal roof panel according to claim 3, characterized in that: The limiting shaft is provided with a limiting end head, and the limiting end head is connected to the limiting shaft through a spring. The sleeve is provided with at least two through holes, and the through holes are horizontally distributed on the sleeve. The limiting end head matches the through holes.

5. The flexible ladder for installing a metal roof panel according to claim 1, characterized in that: The soft ladder structure is provided with a soft ladder pedal, and the soft ladder pedal is provided with a rubber protection pad. The rubber protection pad is in direct contact with the metal roof panel. 6.Metal roof panel installation method, characterized in that: The installation is performed using the metal roof panel installation ladder as claimed in claim 1, which specifically includes the following steps: a. Install purlins: Install purlins on the beams of the house, re-measure the elevation, and then use the theodolite and level to lay out the installation reference line; b. Connect the load-bearing rope and buckle of the soft ladder structure; c. Coiling ladder structure: Connect the buckle on the ladder structure to the load-bearing connecting shaft between the fixed brackets on the ground. By turning the winding handle, the load-bearing connecting shaft and the ladder winding shaft rotate synchronously on the fixed bracket, and the ladder structure is rolled up on the load-bearing connecting shaft and the ladder winding shaft to complete the winding of the ladder structure; d. Install the coiled ladder structure onto the purlin: transport the completed coiled ladder structure to the construction site, and then connect the purlin connecting plate on the fixed bracket to the purlin with self-tapping screws; e. Install the ladder deployment device: (1) Fix the rotating seat to the mounting seat on the fixed bracket by the first bolt, then fix the adjustment plate to the rotating seat by the second bolt, and then screw the fastening screw between the adjustment plate and the connecting block; (2) Rotate the adjustment plate on a vertical plane with the second bolt as the axis. When the adjustment plate is in a horizontal state, tighten the nut on the second bolt so that the two connection blocks are symmetrically arranged; (3) Rotate the rotating seat on the horizontal plane by a set angle in a direction away from the fixed bracket with the first bolt as the axis, and then tighten the nut on the first bolt; (4) Rotate the limit block on the horizontal plane to a set angle toward the fixed bracket with the third bolt as the axis, and then insert the clamping block at the bottom of the limit block into the clamping groove of the connecting block; f. Expand the soft ladder structure: (1) Install a traction rope on the ladder pedal at the outermost end of the ladder structure, then rotate the winding handle to rotate the ladder structure out from the load-bearing connecting shaft and the ladder winding shaft, and then lay the ladder structure on the ladder laying steel pipe. Then continue to rotate the winding handle, and at the same time, another construction worker pulls the traction rope. The ladder structure is unfolded under the guidance of the ladder laying steel pipe until the ladder structure is fully extended, and then the unfolded ladder structure is inspected; (2) After checking that everything is correct, fix the limit clamp on the load-bearing connecting shaft. The limit clamp is installed in the area between the two buckles, and the limit clamp is pressed against the buckle so that the buckle is limited on the load-bearing connecting shaft; (3) Remove the block at the bottom of the limit block from the slot of the connecting block, take out the ladder as a whole to lay the steel pipe, and then pull the traction rope to lay the ladder structure as a whole on the purlin of the house; g. Install a lifeline on the purlin near the installation location of the ladder structure. The length of the lifeline is the same as that of the ladder structure. A buckle ring is provided on the lifeline to connect to the buckle ring installed on the construction personnel; h. Metal roof panel installation: (1) The metal roof panel to be installed is hoisted to the designed installation position on the house. Then the construction workers climb up the soft ladder structure, tie the lifeline, and then pull the metal roof panel for installation. When the first metal roof panel is fixed in place, a continuous alignment line is drawn at the end and top of the first metal roof panel to facilitate the alignment and quick fixing of the subsequent metal roof panels; (2) The integral metal roof panels are installed in sections from bottom to top; i. Dismantle the soft ladder structure: (1) After the metal roof panel is installed, the construction worker unties the lifeline, leaves the ladder structure, turns the winding handle, causes the load-bearing connecting shaft and the ladder winding shaft to rotate synchronously on the fixed bracket, winds up the ladder structure on the load-bearing connecting shaft and the ladder winding shaft, completes the winding of the ladder structure, loosens the nut of the second bolt, rotates the adjustment plate on the vertical plane with the second bolt as the axis, and tightens the nut on the second bolt when the adjustment plate is in a vertical state; (2) Remove the self-tapping screws between the purlin connecting plate and the purlin on the fixing bracket.

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