A material handling device for construction of steep sloped roofs

Abstract

This invention belongs to the field of construction technology for steep sloped roofs, specifically relating to a material handling device for such construction. It includes a main support mechanism, a secondary support mechanism, a support beam, a main slide rail mounted on the ridge, and secondary slide rails distributed across the roof surface. The main support mechanism is slidably mounted on the main slide rail; the secondary support mechanism is slidably mounted on the secondary slide rail; one end of the support beam is connected to the main support mechanism, and the beam body is connected to the secondary support mechanism. The main and secondary support mechanisms cooperate to horizontally support the support beam. A hoisting trolley capable of sliding along its length is mounted on the support beam. A cable reel assembly is provided on the main support mechanism. The cable on the cable reel assembly is connected to a hook after being reversed by a fixed guide wheel and a moving guide wheel on the hoisting trolley. This device successfully solves the problem of secondary material transfer during the construction of steep sloped roofs. It significantly improves the efficiency of material handling, shortens the construction cycle, and has advantages such as reasonable structure, simple operation, and wide applicability.

Description

Technical Field

[0001] This invention belongs to the field of construction technology for steep slope roofs, and specifically relates to a material handling device for construction of steep slope roofs. Background Technology

[0002] In the construction industry, the construction of steeply sloping roofs (typically defined as slopes greater than 30°) has always faced severe challenges. One of the core problems is the low efficiency and significant safety hazards associated with material handling on the roof. Currently, material transportation on sloping roofs mainly relies on manual labor. Construction workers must transport materials such as mortar, tiles, and insulation boards to the roof eaves using vertical transport equipment, and then carry them by hand across the steep and slippery roof surface to distribute them to various work points. This method has significant drawbacks: First, workers moving under heavy loads on a sloping roof are unstable and prone to slipping and falling, posing a very high safety risk. Second, workers expend a great deal of physical strength to maintain their balance, resulting in slow transport speeds, small single-trip volumes, and extremely low construction efficiency, severely hindering project progress. Furthermore, small tools and bulk materials are difficult to secure on the slope, easily rolling off, causing material loss and requiring secondary handling. Although existing technologies include equipment such as roof construction scaffolds, they are mostly used for the overall lifting of the entire roof and cannot solve the problem of secondary transfer in both horizontal and inclined directions between various work points on the roof. Summary of the Invention

[0003] This invention aims to solve the problems of high difficulty and low construction efficiency in transporting materials back and forth when constructing on steeply sloping roofs.

[0004] This invention provides the following technical solution: a material handling device for construction on a steeply sloping roof, comprising a main support mechanism, a secondary support mechanism, a support beam, a main slide rail set on the ridge, and secondary slide rails distributed on the roof; both the main slide rail and the secondary slide rail are parallel to the length direction of the roof.

[0005] The main support mechanism is slidably mounted on the main slide rail;

[0006] The secondary support mechanism is slidably mounted on the secondary slide rail;

[0007] One end of the support beam is connected to the main support mechanism, and the beam body of the support beam is connected to the secondary support mechanism. The main support mechanism and the secondary support mechanism work together to horizontally support the support beam.

[0008] The support beam is equipped with a hoisting trolley that can slide along its length. The main support mechanism is equipped with a cable winding assembly. The cable on the cable winding assembly is connected to the hook after being reversed by the fixed guide wheel and the moving guide wheel on the hoisting trolley.

[0009] Furthermore, the main support mechanism includes a hollow column and a lifting bracket. The bottom of the hollow column is equipped with a slider, which is slidably nested in the main slide rail. A manual jack is installed inside the hollow column, and the handle of the manual jack extends out from the opening in the hollow column. A vertical guide groove is provided on the hollow column, which is internally and externally connected. The lifting bracket is slidably fitted on the outside of the hollow column, and the horizontal support rod on the lifting bracket passes through the vertical guide groove and is connected to the piston rod of the manual jack. One end of the support beam is connected to the lifting bracket. The cable reel assembly is installed on the top of the hollow column, and the fixed guide wheel is installed on the lifting bracket.

[0010] Furthermore, the cable reel assembly includes a cable reel drive motor and two winding units, with the two winding units correspondingly connected to the hoisting trolleys on both sides of the support beam; the housing of the cable reel drive motor is mounted on the hollow column, and the shaft end of the output shaft of the cable reel drive motor is connected to the first bearing seat on the hollow column; a drive gear is slidably mounted on the output shaft of the cable reel drive motor, and the drive gear is connected to the output shaft by a key; magnetic chucks are provided on the output shaft at both ends of the sliding stroke of the drive gear.

[0011] The winding unit includes a spool and a driven gear. The spool is installed in a second bearing housing on a hollow column. On both sides of the second bearing housing, the spool has a rope section and a spline section, respectively. The rope section of the spool extends outward from the hollow column, and the cable is wound around the rope section. The driven gear is installed on the spline section of the spool and can be selected to mesh with one of the driven gears by sliding the driving gear.

[0012] Furthermore, the support beam has straight grooves along its length.

[0013] The hoisting trolley includes a frame that is slidably inserted into a straight groove. The frame holds the support beam by two rows of support wheels. A movable guide wheel is installed on the top of the frame. The frame has a vertical through hole. The cable passes through the vertical through hole and connects to the hook after being reversed by the movable guide wheel.

[0014] Furthermore, toothed pulleys are distributed along the long side of the support beam along the movement trajectory of the hoisting trolley. The toothed pulleys are connected together by a synchronous belt. The frame of the hoisting trolley is connected to the synchronous belt, and the toothed pulley at one end is connected to the pulley drive motor.

[0015] Furthermore, the support beam has insertion holes that are centered along the width direction and spaced apart along the length direction;

[0016] The secondary support mechanism includes an upright, which is inserted into the insertion hole of the support beam. The top and bottom surfaces of the support beam are fixed to the upright, and a clamp is used for support and limitation. The clamp is a detachable structure that is fastened with bolts. A first pulley is provided at the bottom end of the upright, and the first pulley slides in cooperation with the secondary slide rail.

[0017] Furthermore, the lifting support has a lower locking groove, and the support beam has an upper locking groove, and the upper locking groove of the support beam engages with the lower locking groove of the lifting support.

[0018] It also includes an upper clamping plate and a lower clamping plate, and the upper clamping plate and the lower clamping plate are connected by bolts to clamp and fix the upper and lower fastening grooves.

[0019] Furthermore, the hollow column has wheels with brakes on both sides of the slider at its base, and the wheels roll on the roof ridge.

[0020] Furthermore, the main slide rail includes spliced ​​unit rail sections. One end of the bottom surface of each unit rail section is provided with an outward connecting plate, and the other end of the bottom surface is provided with an inward connecting plate. Between unit rail sections, the next unit rail section overlaps on the outward connecting plate of the previous unit rail section. Anchor bolts are provided on the outward connecting plate and the inward connecting plate to fix it to the ridge.

[0021] Furthermore, diagonal bracing legs are provided on both sides of the bottom of the upright, and the second pulley at the bottom of the diagonal bracing legs slides in conjunction with the secondary slide rail.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] This invention provides a material handling device for construction of steeply sloping roofs. By installing movable support mechanisms on main and secondary slide rails and mounting hoisting trolleys that can slide along horizontal support beams, a mechanized material handling network covering the entire roof is constructed. This device replaces traditional manual labor of carrying heavy loads uphill with mechanical hoisting, freeing workers from high-risk, high-intensity physical labor and improving the safety of the construction process. The main support mechanism can be adjusted in height manually with jacks, and the secondary support mechanism can be adjusted in height by adjusting the clamps on the uprights to adapt to roof slopes of different gradients. The modularly assembled main slide rails can be flexibly expanded according to the roof length. The cable reel assembly can independently control the lifting and lowering of the hooks on the hoisting trolleys on both sides. The support beams and various mechanisms adopt quick-connect structures such as plug-in and snap-fit ​​connections, making the entire system easy to assemble and disassemble. This device successfully solves the problem of secondary material transfer in the construction of steeply sloping roofs. It significantly improves the efficiency of material handling, shortens the construction cycle, and has the advantages of reasonable structure, simple operation, and wide applicability. Attached Figure Description

[0024] Figure 1 Layout diagram of material handling equipment on a steeply sloping roof;

[0025] Figure 2 A schematic diagram of a single material handling device;

[0026] Figure 3 A three-dimensional view of the main support structure;

[0027] Figure 4A cross-sectional view of the main support structure;

[0028] Figure 5 This is a schematic diagram of a cable reel assembly;

[0029] Figure 6 A schematic diagram showing the cooperation between the main support mechanism and the main slide rail;

[0030] Figure 7 A schematic diagram showing the coordination between the hoisting trolley and the support beam;

[0031] Figure 8 This is a schematic diagram showing the connection between the support beam and the lifting bracket;

[0032] Figure 9 This is a schematic diagram of the diagonal bracing legs on the upright pole;

[0033] Figure 10 This is a schematic diagram showing the connection between unit rail sections.

[0034] In the diagram: 1-Main support mechanism; 1.1-Hollow column; 1.1.1-Vertical guide groove; 1.2-Manual jack; 1.3-Lifting bracket; 1.3.1-Horizontal support rod; 1.3.2-Lower locking groove; 1.4-Slider; 1.5-Wheel;

[0035] 2-Secondary support mechanism; 2.1-Upright pole; 2.2-Clamping hoop; 2.3-First pulley; 2.4-Diagonal brace leg; 2.5-Second pulley;

[0036] 3-Support beam; 3.1-Straight groove; 3.2-Insertion hole; 3.3-Upper snap-fit ​​groove;

[0037] 4-Main slide rail; 4.1-Unit rail section; 4.2-Extended connecting plate; 4.3-Retractable connecting plate; 4.4-Pressure plate; 4.5-Embedded plate; 4.6-Anchor bolt;

[0038] 5-way slide rail;

[0039] 6-Lifting trolley; 6.1-Frame; 6.2-Support wheels; 6.3-Moving guide wheels; 6.4-Vertical through hole;

[0040] 7-Cable winding assembly; 7.1-Cable; 7.2-Cable winding drive motor; 7.3-Drive gear; 7.4-Spindle; 7.5-Driven gear; 7.6-Magnetic chuck;

[0041] 8-Fixed guide wheel; 9-Hook; 10-Toothed pulley; 11-Synchronous belt; 12-Pulley drive motor; 13-Upper clamping plate; 14-Lower clamping plate; 15-Ridge; 16-Roof. Detailed Implementation

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] like Figure 1 , Figure 2 As shown: A material handling device for construction on a steeply sloping roof includes a main support mechanism 1, a secondary support mechanism 2, a support beam 3, a main slide rail 4 set on the ridge 15, and secondary slide rails 5 distributed on the roof surface 16; both the main slide rail 4 and the secondary slide rails 5 are parallel to the length direction of the roof surface 16; the main support mechanism 1 is slidably mounted on the main slide rail 4; the secondary support mechanism 2 is slidably mounted on the secondary slide rail 5; one end of the support beam 3 is connected to the main support mechanism 1, and the beam body of the support beam 3 is connected to the secondary support mechanism 2; the main support mechanism 1 and the secondary support mechanism 2 cooperate to horizontally support the support beam 3; a hoisting trolley 6 capable of sliding along its length direction is mounted on the support beam 3; a cable reel assembly 7 is provided on the main support mechanism 1; the cable 7.1 on the cable reel assembly 7 is connected to the hook 9 after being reversed by a fixed guide wheel 8 and a moving guide wheel 6.3 on the hoisting trolley 6. The main support mechanism 1 and the secondary support mechanism 2 move along the length of the roof 16 under the guidance of the main slide rail 4 and the secondary slide rail 5, respectively. The hoisting trolley 6 moves along the slope of the roof 16 under the guidance of the support beam 3, realizing material handling operations covering the entire roof 16. When the hoisting trolley 6 is fixed in position, the hook 9 rises and falls to lift or lower the material as the cable reel assembly 7 winds up and unwinds the cable 7.1. As the hoisting trolley 6 gradually approaches the cable reel assembly 7, the cable reel assembly 7 winds up the cable 7.1. As the hoisting trolley 6 gradually moves away from the cable reel assembly 7, the cable reel assembly 7 releases the cable 7.1, keeping the hook 9 and the material within a safe height range.

[0044] like Figure 3 , Figure 4 , Figure 6As shown: The main support mechanism 1 includes a hollow column 1.1 and a lifting bracket 1.3. A slider 1.4 is installed at the base of the hollow column 1.1, and the slider 1.4 is slidably nested in the main slide rail 4. The track groove on the main slide rail 4 has a narrow opening and a widened interior. The slider 1.4 slides and fits snugly with the track groove on the main slide rail 4. The main slide rail 4 not only serves as a linear guide but also as a reaction force support when the hollow column 1.1 tilts. A manual jack 1.2 is installed inside the hollow column 1.1, and the handle of the manual jack 1.2 extends from the opening in the hollow column 1.1. The hollow column 1.1 is equipped with... A vertical guide groove 1.1.1 with internal and external penetration is provided. The lifting bracket 1.3 is slidably sleeved on the hollow column 1.1. The horizontal support rod 1.3.1 on the lifting bracket 1.3 passes through the vertical guide groove 1.1.1 and is connected to the piston rod of the manual jack 1.2. The handle of the manual jack 1.2 is operated to extend or shorten it, thereby changing the height of the lifting bracket 1.3. One end of the support beam 3 is connected to the lifting bracket 1.3. The support beam 3 is leveled when the lifting bracket 1.3 moves up and down. The cable reel assembly 7 is installed on the top of the hollow column 1.1, and the fixed guide wheel 8 is installed on the lifting bracket 1.3.

[0045] like Figure 3 , Figure 5 As shown: The cable reel assembly 7 includes a cable reel drive motor 7.2 and two winding units, which are connected to the hoisting trolleys 6 on both sides of the support beam 3. The housing of the cable reel drive motor 7.2 is mounted on the hollow column 1.1, and the shaft end of the output shaft of the cable reel drive motor 7.2 is connected to the first bearing seat on the hollow column 1.1. A drive gear 7.3 is slidably mounted on the output shaft of the cable reel drive motor 7.2. The drive gear 7.3 is connected to the output shaft by a key, so that the drive gear 7.3 maintains torque transmission while sliding on the output shaft. Magnetic chucks 7.6 are provided at both ends of the sliding stroke of the drive gear 7.3 on the output shaft. When the drive gear 7.3 slides to one side, it is magnetically attracted and fixed by the magnetic chucks 7.6 to prevent the drive gear 7.3 from sliding accidentally.

[0046] The winding unit includes a winding shaft 7.4 and a driven gear 7.5. The winding shaft 7.4 is installed in a second bearing seat on a hollow column 1.1. On both sides of the second bearing seat, the winding shaft 7.4 has a rope section and a spline section, respectively. The rope section of the winding shaft 7.4 extends outward from the hollow column 1.1, and the cable 7.1 is wound on the rope section. The driven gear 7.5 is installed on the spline section of the winding shaft 7.4 and is fixedly connected to the spline section of the winding shaft 7.4. It can be selectively engaged with one of the driven gears 7.5 by sliding the driving gear 7.3. One cable drive motor 7.2 drives two winding units. When the two hoisting trolleys 6 are located at opposite ends of the support beam 3 (one hoisting trolley 6 is at the top of the roof 16, and the other hoisting trolley 6 is at the bottom of the roof 16), when materials need to be lifted at the top of the roof 16, the drive gear 7.3 engages with the driven gear 7.5 of the corresponding winding unit; when materials need to be lifted at the bottom of the roof 16, the drive gear 7.3 engages with the driven gear 7.5 of the other winding unit, thus reducing the time required for the hoisting trolleys 6 to move back and forth. The design of one cable drive motor 7.2 driving the two winding units to work in a staggered manner is to avoid excessive load on the support beam 3.

[0047] like Figure 7 , Figure 8 As shown: The support beam 3 has a straight groove 3.1 along its length; there is a straight groove 3.1 on each side of the support beam 3 in the width direction.

[0048] The hoisting trolley 6 includes a frame 6.1, which is slidably inserted into a straight slide groove 3.1. The frame 6.1 is slidably clamped to the support beam 3 by two rows of upper and lower support wheels 6.2, so that the frame 6.1 slides smoothly on the support beam 3. The movable guide wheel 6.3 is installed on the top of the frame 6.1. The frame 6.1 has a vertical through hole 6.4. The cable 7.1 passes through the vertical through hole 6.4 and is connected to the hook 9 after the movable guide wheel 6.3 changes direction.

[0049] Toothed pulleys 10 are distributed along the long side of the support beam 3 along the movement trajectory of the hoisting trolley 6. The toothed pulleys 10 are connected together by a synchronous belt 11. The frame 6.1 of the hoisting trolley 6 is connected to the synchronous belt 11, and the toothed pulley 10 at one end is connected to the pulley drive motor 12. When the pulley drive motor 12 drives the toothed pulley 10 connected to it to rotate, it drives the synchronous belt 11 to rotate. When the synchronous belt 11 rotates, it pulls the hoisting trolley 6 to move on the support beam 3.

[0050] The support beam 3 has insertion holes 3.2 centered along the width direction and spaced apart along the length direction; the secondary support mechanism 2 includes a vertical rod 2.1, which is inserted into the insertion holes 3.2 of the support beam 3. The top and bottom surfaces of the support beam 3 are fixed to the vertical rod 2.1 by a clamp 2.2 as a support limit; the clamp 2.2 is a detachable structure that is bolted; the support height of the vertical rod 2.1 can be adjusted by changing the position of the clamp 2.2 on the vertical rod 2.1; the bottom end of the vertical rod 2.1 is provided with a first pulley 2.3, which slides in cooperation with the secondary slide rail 5.

[0051] The support beam 3 and the lifting bracket 1.3 are detachably connected. The lifting bracket 1.3 has a lower fastening groove 1.3.2, and the support beam 3 has an upper fastening groove 3.3. The upper fastening groove 3.3 of the support beam 3 and the lower fastening groove 1.3.2 of the lifting bracket 1.3 are fastened together. The support beam 3 also includes an upper clamping plate 13 and a lower clamping plate 14. The upper clamping plate 13 and the lower clamping plate 14 are connected by bolts to clamp and fix the upper fastening groove 3.3 and the lower fastening groove 1.3.2.

[0052] like Figure 9 As shown: The bottom of the upright 2.1 is provided with diagonal bracing legs 2.4 on both sides. The second pulley 2.5 at the bottom of the diagonal bracing legs 2.4 is in sliding cooperation with the secondary slide rail 5. The diagonal bracing legs 2.4 support the upright 2.1 laterally to prevent the upright 2.1 from tilting to the left or right.

[0053] like Figure 6 As shown: The bottom of the hollow column 1.1 is provided with wheels 1.5 with brakes on both sides of the slider 1.4. The wheels 1.5 roll on the ridge 15. After the main support mechanism 1 moves to the target position along the main slide rail 4, it stops by the brake on the wheel 1.5 to prevent slippage.

[0054] like Figure 10 As shown: The main slide rail 4 has a modular structure, which includes spliced ​​unit rail sections 4.1. One end of the bottom surface of the unit rail section 4.1 is provided with an outward connecting plate 4.2, and the other end of the bottom surface is provided with an inward connecting plate 4.3. Between the unit rail sections 4.1, the next unit rail section 4.1 overlaps on the outward connecting plate 4.2 of the previous unit rail section 4.1 to prevent a large drop at the joint between the unit rail sections 4.1, which would hinder the sliding of the main support mechanism 1. Anchor bolts are provided on the outward connecting plate 4.2 and the inward connecting plate 4.3 to fix it to the ridge 15.

[0055] like Figure 2As shown: The two ends of the main slide rail 4 are fixed by embedded supports. The embedded supports include embedded plates 4.5, anchor bolts 4.6 and pressure plates 4.4. The embedded plates 4.5 are embedded in the ridge 15. The anchor bolts 4.6 are fixedly connected to the embedded plates 4.5. The end of the main slide rail 4 presses on the top surface of the embedded plates 4.5. The pressure plates 4.4 press on the top surface of the main slide rail 4. The connecting lugs on the pressure plates 4.4 are connected to the anchor bolts 4.6. The nuts on the anchor bolts 4.6 are used to lock the pressure plates 4.4.

[0056] The secondary slide rail 5 is also composed of several segments spliced ​​together, with the ends of the segments aligned. Each segment of the secondary slide rail 5 is fixed to the roof 16 by the second anchor bolts.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A material handling device for construction of steeply sloping roofs, characterized in that: It includes a main support mechanism (1), a secondary support mechanism (2), a support beam (3), a main slide rail (4) set on the ridge (15) and secondary slide rails (5) distributed on the roof (16); the main slide rail (4) and the secondary slide rail (5) are both parallel to the length direction of the roof (16); The main support mechanism (1) is slidably mounted on the main slide rail (4); The secondary support mechanism (2) is slidably mounted on the secondary slide rail (5); One end of the support beam (3) is connected to the main support mechanism (1), and the beam body of the support beam (3) is connected to the secondary support mechanism (2). The main support mechanism (1) and the secondary support mechanism (2) work together to horizontally support the support beam (3). The support beam (3) is equipped with a hoisting trolley (6) that can slide along its length. The main support mechanism (1) is equipped with a cable winding assembly (7). The cable (7.1) on the cable winding assembly (7) is connected to the hook (9) after being reversed by the fixed guide wheel (8) and the moving guide wheel (6.3) on the hoisting trolley (6). The main support mechanism (1) includes a hollow column (1.1) and a lifting bracket (1.3). A slider (1.4) is provided at the bottom of the hollow column (1.1), and the slider (1.4) is slidably nested in the main slide rail (4). A manual jack (1.2) is provided inside the hollow column (1.1), and the handle of the manual jack (1.2) extends out from the opening of the hollow column (1.1). A vertical guide groove that runs through the inside and outside is provided on the hollow column (1.1). (1.1.1), the lifting bracket (1.3) is slidably sleeved on the outside of the hollow column (1.1), the horizontal support rod (1.3.1) on the lifting bracket (1.3) passes through the vertical guide groove (1.1.1) and is connected to the piston rod of the manual jack (1.2); one end of the support beam (3) is connected to the lifting bracket (1.3); the cable reel assembly (7) is installed on the top of the hollow column (1.1), and the fixed guide wheel (8) is installed on the lifting bracket (1.3); The cable winding assembly (7) includes a cable winding drive motor (7.2) and two winding units, which are connected to the hoisting trolleys (6) on both sides of the support beam (3). The housing of the cable winding drive motor (7.2) is mounted on the hollow column (1.1), and the shaft end of the output shaft of the cable winding drive motor (7.2) is connected to the first bearing seat on the hollow column (1.1). A drive gear (7.3) is slidably mounted on the output shaft of the cable winding drive motor (7.2), and the drive gear (7.3) is connected to the output shaft by a key. Magnetic chucks (7.6) are provided on the output shaft at both ends of the sliding stroke of the drive gear (7.3). The winding unit includes a spool (7.4) and a driven gear (7.5); the spool (7.4) is installed in the second bearing seat on the hollow column (1.1). On both sides of the second bearing seat, the spool (7.4) consists of a rope section and a spline section, respectively. The rope section of the spool (7.4) extends outward from the hollow column (1.1) and the cable (7.1) is wound around the rope section. The driven gear (7.5) is installed on the spline section of the spool (7.4) and is selected to mesh with one of the driven gears (7.5) by sliding the driving gear (7.3).

2. The material handling device for construction of steep sloped roofs according to claim 1, characterized in that: The support beam (3) has a straight groove (3.1) along its length. The hoisting trolley (6) includes a frame (6.1), which is slidably inserted into a straight slide groove (3.1). The frame (6.1) slidably clamps the support beam (3) through two rows of support wheels (6.2). The movable guide wheel (6.3) is installed on the top of the frame (6.1). The frame (6.1) has a vertical through hole (6.4). The cable (7.1) passes through the vertical through hole (6.4) and connects to the hook (9) after the movable guide wheel (6.3) changes direction.

3. The material handling device for construction of steep sloped roofs according to claim 2, characterized in that: The long side of the support beam (3) is provided with toothed pulleys (10) along the movement trajectory of the hoisting trolley (6). The toothed pulleys (10) are connected together by a synchronous belt (11). The frame (6.1) of the hoisting trolley (6) is connected to the synchronous belt (11), and the toothed pulley (10) at one end is connected to the pulley drive motor (12).

4. The material handling device for construction of steep sloped roofs according to claim 2, characterized in that: The support beam (3) has insertion holes (3.2) that are centered along the width direction and spaced apart along the length direction. The secondary support mechanism (2) includes a pole (2.1), which is inserted into the insertion hole (3.2) of the support beam (3). The top and bottom surfaces of the support beam (3) are fixed to the pole (2.1) and a clamp (2.2) serves as a support limit. The clamp (2.2) is a detachable structure that is bolted. The bottom end of the pole (2.1) is provided with a first pulley (2.3), which slides in cooperation with the secondary slide rail (5).

5. The material handling device for construction of steep sloped roofs according to claim 1, characterized in that: The lifting bracket (1.3) is provided with a lower fastening groove (1.3.2), and the support beam (3) is provided with an upper fastening groove (3.3). The upper fastening groove (3.3) of the support beam (3) is fastened to the lower fastening groove (1.3.2) of the lifting bracket (1.3). It also includes an upper clamping plate (13) and a lower clamping plate (14), and the upper clamping plate (13) and the lower clamping plate (14) are connected by bolts to clamp and fix the upper snap-fit ​​groove (3.3) and the lower snap-fit ​​groove (1.3.2).

6. The material handling device for construction of steep sloped roofs according to claim 1, characterized in that: The hollow column (1.1) has wheels (1.5) with brakes on both sides of the slider (1.4) at its bottom. The wheels (1.5) roll on the ridge (15).

7. The material handling device for construction of steep sloped roofs according to claim 1, characterized in that: The main slide rail (4) includes spliced ​​unit rail sections (4.1). One end of the bottom surface of the unit rail section (4.1) is provided with an outward connecting plate (4.2) and the other end of the bottom surface is provided with an inward connecting plate (4.3). Between the unit rail sections (4.1), the next unit rail section (4.1) overlaps on the outward connecting plate (4.2) of the previous unit rail section (4.1). Anchor bolts are provided on the outward connecting plate (4.2) and the inward connecting plate (4.3) to fix it to the ridge (15).

8. A material handling device for construction of steeply sloping roofs according to claim 4, characterized in that: The bottom sides of the upright (2.1) are provided with inclined support legs (2.4), and the second pulley (2.5) at the bottom of the inclined support leg (2.4) slides in cooperation with the secondary slide rail (5).

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