A right-angle pulley protection mechanism for a parapet wall hoisted on a roof

Abstract

This utility model discloses a right-angle pulley protection mechanism for rooftop material hoisting parapet walls, belonging to the technical field of rooftop material hoisting auxiliary tools. Specifically, it includes a first pulley assembly and a second pulley assembly, which are assembled together by a hinge. A fixing frame is installed at the end of the second pulley assembly away from the first pulley assembly to secure both pulley assemblies to the top of the parapet wall. This utility model consists of two sets of pulley assemblies and a fixing frame, with the two sets of pulley assemblies assembled together by a hinge. In use, it effectively avoids direct friction between the hoisting rope and the edges of the parapet wall, not only protecting the wall and the hoisting rope but also greatly reducing frictional resistance when lifting materials, achieving a labor-saving effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of rooftop material hoisting auxiliary tools, specifically relating to a right-angle pulley protection mechanism for rooftop parapet wall hoisting. Background Technology

[0002] Material transportation and waste removal are essential parts of rooftop maintenance in residential buildings, especially in large-scale maintenance or basic building renovations. While this is relatively straightforward for newer buildings or those with elevators, older residential buildings, lacking elevators, rely heavily on manual labor for material handling and waste removal. This is extremely time-consuming, labor-intensive, and time-consuming. Existing hoists for rooftop material handling are bulky and difficult to operate. Furthermore, most older buildings retain traditional roof designs with tiled roofs, resulting in very limited usable surface area, making hoists unsuitable. Consequently, traditional rooftop maintenance in older residential areas often involves manually lifting and pulling materials or removing waste using ropes. During this process, friction occurs between the ropes and the right-angled corner of the parapet wall, causing wear and tear on the ropes and the parapet wall edges, and further increasing the difficulty of lifting and moving materials.

[0003] To address this, we designed and proposed a portable rooftop hoisting parapet wall right-angle pulley protection mechanism. Utility Model Content

[0004] The purpose of this utility model is to provide a right-angle pulley protection mechanism for rooftop parapet wall hoisting, in order to solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A right-angle pulley protection mechanism for rooftop parapet wall hoisting includes a first pulley assembly and a second pulley assembly. The first pulley assembly and the second pulley assembly are assembled together by a hinge. A fixing frame for fixing the first pulley assembly and the second pulley assembly to the top of the parapet wall is installed at the end of the second pulley assembly away from the first pulley assembly.

[0006] Furthermore, both the first pulley assembly and the second pulley assembly include a U-shaped pulley seat. The top of the pulley seat is provided with a mounting hole for the support shaft to pass through. A guide pulley is mounted on the inner side of the top of the pulley seat via the support shaft. The guide pulley is rotatably connected to the support shaft. The hinge is installed at the end of the pulley seat in the first pulley assembly and the second pulley assembly.

[0007] Furthermore, positioning sleeves are fixed between both ends of the support shaft and the mounting holes on the pulley seat.

[0008] Furthermore, the outer side of the guide pulley is provided with a U-shaped anti-disengagement buckle, and the two sides of the anti-disengagement buckle are respectively fitted onto the two ends of the support shaft and fixed by tightening the locking nuts at both ends of the support shaft.

[0009] Furthermore, in the second pulley assembly, a hook-shaped hanging rod is rotatably mounted on both sides of the pulley seat near the end of the first pulley assembly. In the first pulley assembly, a slot with an arc-shaped design is provided on both sides of the pulley seat near the end of the second pulley assembly to cooperate with the hanging rod.

[0010] Furthermore, the pulley seat in the second pulley assembly also has a latch near the top for engaging with the hanging rod.

[0011] Furthermore, the fixing frame includes two symmetrically designed sleeves, the ends of which are hook-shaped and rotatably mounted on both sides of the pulley seat in the second sliding assembly.

[0012] Furthermore, the fixing frame also includes an adjusting frame, which includes two adjusting rods, the ends of which are slidably inserted into the sleeve, and the front end of the sleeve is threaded with a locking bolt for locking the adjusting rods.

[0013] Furthermore, each of the two adjusting rods has an integrally formed clamping part at its end, which is designed to be perpendicular to the adjusting rod. The end of the clamping part is integrally formed with an operating handle, which is designed to be perpendicular to the clamping part.

[0014] Furthermore, a connecting plate is integrally formed at the middle position of the clamping part at the end of the two adjusting rods, and a threaded hole is provided in the middle of the connecting plate, with a clamping bolt threaded inside the threaded hole.

[0015] Furthermore, the bottom of the pulley seat in both the first pulley assembly and the second pulley assembly is provided with a rubber pad.

[0016] Beneficial effects: This utility model consists of two sets of pulley assemblies and a fixing frame. The two sets of pulley assemblies are assembled together by hinges. In use, one set of pulley assemblies is placed flat on the top plane of the parapet wall, while the other set of pulley assemblies hangs naturally at a 90-degree vertical angle against the outside of the parapet wall. Finally, the fixing frame is hooked to the inner side of the parapet wall to prevent the two sets of pulley assemblies from falling off the parapet wall, thus achieving a stabilizing effect. When moving materials, the lifting rope is guided by the two sets of pulley assemblies, which can effectively avoid direct friction between the lifting rope and the edge of the parapet wall. This not only protects the wall and the lifting rope, but also greatly reduces the frictional resistance when lifting materials, achieving a labor-saving effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is an exploded structural diagram of the present invention.

[0018] In the diagram: 1. Pulley assembly No. 1; 101. Pulley seat; 102. Mounting hole; 103. Positioning sleeve; 104. Support shaft; 105. Guide pulley; 106. Anti-disengagement pulley; 107. Locking nut; 108. Slot; 2. Pulley assembly No. 2; 201. Bayonet; 3. Hinge; 4. Hanging rod; 5. Fixing bracket; 501. Sleeve; 502. Adjusting bracket; 521. Adjusting rod; 522. Clamping part; 523. Operating handle end; 524. Connecting plate; 525. Threaded hole; 526. Clamping bolt; 503. Locking bolt; 6. Rubber pad. Detailed Implementation

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0020] Example: To address the inconvenience of hoisting materials during roof maintenance in older residential buildings, we propose a portable and simple roof hoisting parapet wall right-angle pulley protection mechanism. The specific solution is as follows: This embodiment provides a right-angle pulley protection mechanism for rooftop parapet wall hoisting.

[0021] like Figure 1-2 As shown, it specifically includes a first pulley assembly 1 and a second pulley assembly 2. The first pulley assembly 1 and the second pulley assembly 2 are assembled together by a hinge 3, allowing them to rotate. In use, one set of pulley assemblies is placed flat on the top plane of the parapet wall, while the other set of pulley assemblies hangs down at a 90-degree vertical angle against the outside of the parapet wall. To prevent the first pulley assembly 1 and the second pulley assembly 2 from falling off the top edge of the parapet wall, a fixing bracket 5 is installed at the end of the second pulley assembly 2 away from the first pulley assembly 1 to fix the first pulley assembly 1 and the second pulley assembly 2 to the top of the parapet wall.

[0022] The fixing bracket 5 is hooked to the inner side of the parapet wall to prevent the two sets of pulley assemblies from falling off the parapet wall, thus achieving a stabilizing effect. When moving materials, the lifting rope is guided by the two sets of pulley assemblies, which can effectively avoid the lifting rope from directly rubbing against the edge of the parapet wall. This not only protects the wall and the lifting rope, but also greatly reduces the frictional resistance when lifting materials, achieving a labor-saving effect.

[0023] like Figure 3 As shown, in order to achieve the above effect, both the first pulley assembly 1 and the second pulley assembly 2 include a U-shaped pulley seat 101, and a mounting hole 102 is provided at the top of the pulley seat 101 to facilitate the passage of the support shaft 104. Guide pulleys 105 are mounted on the inner side of the top of the two sets of pulley seats 101 through the support shaft 104, and the guide pulleys 105 and the support shaft 104 are assembled by a rotatable connection. The hinge 3 used to connect the first pulley assembly 1 and the second pulley assembly 2 is installed at the end of the pulley seat 101 in the first pulley assembly 1 and the second pulley assembly 2.

[0024] In order to improve the stability of the assembly between the support shaft 104 and the pulley seat 101, a positioning sleeve 103 is fixed between the two ends of the support shaft 104 and the mounting holes 102 on the pulley seat 101. The positioning sleeve is fixedly assembled with the two ends of the support shaft 104, and the outer side of the positioning sleeve 103 is connected to the mounting hole 102 by a key to limit the circumferential movement of the support shaft 104.

[0025] When using a lifting rope to transport materials or clean up waste, in order to prevent the lifting rope from detaching from the pulley assembly, a U-shaped anti-detachment buckle 106 is provided on the outside of the guide pulley 105. The two sides of the anti-detachment buckle 106 are respectively fitted onto the two ends of the support shaft 104 and fixed by tightening the locking nuts 107 at both ends of the support shaft 104. The angle adjustment of the anti-detachment buckle 106 requires tightening or loosening the locking nuts 107.

[0026] To improve the stability of the two pulley assemblies during operation and to effectively fix them in conjunction with the fixing frame 5, a hook-shaped hanging rod 4 is rotatably installed on both sides of the pulley seat 101 of the second pulley assembly 2 near the end of the first pulley assembly 1. A curved slot 108 is provided on both sides of the pulley seat 101 of the first pulley assembly 1 near the end of the second pulley assembly 2 to cooperate with the hanging rod 4. When the two pulley assemblies are placed at 90 degrees to the top of the parapet wall on the roof, the hanging rod 4 is used to position the first pulley assembly 1 to prevent it from rotating. At this time, the design of the fixing frame 5 makes the whole mechanism form a U-shaped mechanism and fasten it to the top of the parapet wall.

[0027] At the same time, the pulley seat 101 in the second pulley assembly 2 is also provided with a latch 201 near the top for cooperating with the hanging rod 4. When the protective mechanism is not in use, the hanging rod 4 can be rotated in the opposite direction to cooperate with the latch 201 to fix the hanging rod 4.

[0028] The thickness of the parapet wall varies depending on the region and construction requirements. In order for the mechanism to adapt to walls of different thicknesses, its fixing frame 5 adopts an adjustable design. Therefore, the fixing frame 5 specifically includes two symmetrically designed sleeves 501. The ends of the two sleeves 501 are hook-shaped and are respectively rotatably installed on both sides of the pulley seat 101 in the second sliding assembly, so that the entire fixing frame 5 can be flipped on the second pulley assembly 2.

[0029] Meanwhile, the fixing frame 5 also includes an adjusting frame 502, which includes adjusting rods 521. There are two adjusting rods 521, and the ends of the adjusting rods 521 are slidably inserted into the sleeve 501. A locking bolt 503 for locking the adjusting rods 521 is screwed on the front end of the sleeve 501. The width of the lateral span of the fixing frame 5 is adjusted by the locking bolt 503 to accommodate parapet walls of different thicknesses.

[0030] In addition, the ends of both adjusting rods 521 are integrally formed with clamping parts 522. The clamping parts 522 and the adjusting rods 521 are designed at a perpendicular angle. The ends of the clamping parts 522 are integrally formed with operating handles 523. The operating handles 523 and the clamping parts 522 are designed at a perpendicular angle. The vertical design of the clamping parts 522, together with the first pulley assembly 1, forms a U-shaped structure to hold the parapet wall in the middle position. The design of the operating handles 523 is mainly to facilitate the operation of the operator and to connect the two sets of clamping parts 522 and adjusting rods 521 into one unit.

[0031] To further enhance the stability of the adjustment frame 502 and the stability of the clamping between the entire protective mechanism and the parapet wall, a connecting plate 524 is integrally formed in the middle of the clamping part 522 at the ends of the two adjustment rods 521. A threaded hole 525 is provided in the middle of the connecting plate 524, and a clamping bolt 526 is threaded inside the threaded hole 525. When the entire protective mechanism is fastened to the top of the parapet wall, the clamping effect is enhanced by tightening the clamping bolt 526. At the same time, in order to increase the friction between the first pulley assembly 1 and the second pulley assembly 2 and the surface of the parapet wall, a rubber pad 6 is provided at the bottom of the pulley seat 101 in the first pulley assembly 1 and the second pulley assembly 2.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A right-angle pulley protection mechanism for rooftop parapet wall hoisting, characterized in that, It includes a first pulley assembly (1) and a second pulley assembly (2), which are assembled together by a hinge (3). The second pulley assembly (2) is equipped with a fixing bracket (5) at the end away from the first pulley assembly (1) for fixing the first pulley assembly (1) and the second pulley assembly (2) to the top of the parapet wall.

2. The right-angle pulley protection mechanism for rooftop parapet wall hoisting according to claim 1, characterized in that, Both the first pulley assembly (1) and the second pulley assembly (2) include a U-shaped pulley seat (101). The top of the pulley seat (101) is provided with a mounting hole (102) for the support shaft (104) to pass through. A guide pulley (105) is installed on the inner side of the top of the pulley seat (101) through the support shaft (104). The guide pulley (105) is rotatably connected to the support shaft (104). The hinge (3) is installed at the end of the pulley seat (101) in the first pulley assembly (1) and the second pulley assembly (2).

3. The right-angle pulley protection mechanism for rooftop parapet wall hoisting according to claim 2, characterized in that, Positioning sleeves (103) are fixed between the two ends of the support shaft (104) and the mounting holes (102) on the pulley seat (101).

4. A right-angle pulley protection mechanism for rooftop parapet wall hoisting according to claim 3, characterized in that, The guide pulley (105) is provided with a U-shaped anti-disengagement buckle (106) on the outside. The two sides of the anti-disengagement buckle (106) are respectively sleeved on both ends of the support shaft (104) and fixed by the locking nuts (107) screwed on both ends of the support shaft (104).

5. A rooftop parapet wall right-angle pulley protection mechanism according to claim 4, characterized in that, The pulley seat (101) of the second pulley assembly (2) has a hook-shaped hanging rod (4) on both sides of the pulley seat (101) near the end of the first pulley assembly (1). The pulley seat (101) of the first pulley assembly (1) has an arc-shaped slot (108) on both sides of the pulley seat (101) near the end of the second pulley assembly (2) to cooperate with the hanging rod (4).

6. A rooftop parapet wall right-angle pulley protection mechanism according to claim 5, characterized in that, The pulley seat (101) in the second pulley assembly (2) also has a slot (201) near the top for cooperating with the hanging rod (4).

7. A rooftop parapet wall right-angle pulley protection mechanism according to claim 1, characterized in that, The fixing frame (5) includes two symmetrically designed sleeves (501), the ends of which are hook-shaped and respectively rotatably installed on both sides of the pulley seat (101) in the second sliding assembly; The fixing frame (5) also includes an adjusting frame (502), the adjusting frame (502) includes an adjusting rod (521), there are two adjusting rods (521), and the ends of the adjusting rods (521) are slidably inserted into the sleeve (501). The front end of the sleeve (501) is threaded with a locking bolt (503) for locking the adjusting rod (521). Both adjusting rods (521) have a clamping part (522) integrally formed at their ends. The clamping part (522) and the adjusting rod (521) are designed at a perpendicular angle. The clamping part (522) has an operating handle end (523) integrally formed at its end. The operating handle end (523) and the clamping part (522) are designed at a perpendicular angle.

8. A rooftop parapet wall right-angle pulley protection mechanism according to claim 7, characterized in that, A connecting plate (524) is integrally formed in the middle of the clamping part (522) at the end of the two adjusting rods (521). A threaded hole (525) is provided in the middle of the connecting plate (524), and a clamping bolt (526) is threaded inside the threaded hole (525).

9. A right-angle pulley protection mechanism for rooftop parapet wall hoisting according to claim 2, characterized in that, The bottom of the pulley seat (101) in both the first pulley assembly (1) and the second pulley assembly (2) is provided with a rubber pad (6).

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