Hoisting pulley block and construction machinery

Abstract

The utility model relates to the technical field of engineering machinery, and discloses a hoisting pulley block which comprises a pulley yoke, a pulley arranged on the pulley yoke, a rope blocking frame arranged on the pulley yoke, a first fixing position, a second fixing position, a third fixing position and a rope blocking assembly, the rope blocking assembly comprises a rope blocking rod and a movable part, one end of the movable part is connected with the rope blocking frame, and the other end of the movable part is connected with the pulley yoke. One of the movable part and the rope blocking frame is provided with a first fixing position, and the other one of the movable part and the rope blocking frame is provided with a second fixing position and a third fixing position in a spaced mode. When the first fixing position is connected with the second fixing position, the rope blocking rod is fixed to the first position close to the pulley relative to the rope blocking frame. And when the first fixing position is connected with the third fixing position, the rope blocking rod is fixed at a second position far away from the pulley relative to the rope blocking frame. According to the hoisting pulley block, the distance between the rope blocking rod and the pulley can be adjusted, the operation difficulty is reduced, and the rope penetrating or disassembling efficiency of the hoisting pulley block is effectively improved. The utility model further discloses a construction machine.

Description

Technical Field

[0001] This application relates to the field of engineering machinery technology, and in particular to a lifting pulley block and construction machinery. Background Technology

[0002] As a crucial material handling equipment in modern industry, the reliability of the core component of lifting machinery, the lifting pulley block, directly impacts operational safety and efficiency. In existing cranes, to prevent safety hazards such as rope skipping and tangling during operation, rope-stopping devices consisting of rope-stopping rods are commonly installed at intervals around the pulleys. While this structure effectively constrains the wire rope's trajectory, it has significant drawbacks in practical applications: because the rope end size is much larger than the gap between the pulley and the rope-stopping rod, operators must completely dismantle the rope-stopping rod to thread or unwind the rope. This process not only significantly increases labor intensity but also leads to low efficiency in rope threading or unwinding operations, severely impacting equipment utilization efficiency, especially in construction scenarios with frequent changes in working conditions. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a lifting pulley block and construction machinery.

[0004] This utility model provides a lifting pulley block, including: a pulley frame, a pulley disposed on the pulley frame, a rope guide frame disposed on the pulley frame, a first fixed position, a second fixed position, a third fixed position, and a rope guide assembly. The rope guide assembly includes a rope guide rod and a movable member. One end of the movable member is connected to the rope guide frame, and the other end passes through the rope guide rod. The first fixed position is provided on one of the movable member and the rope guide frame, and the second fixed position and the third fixed position are spaced apart on the other.

[0005] When the first fixed position is connected to the second fixed position, the rope-blocking rod is fixed at a first position close to the pulley relative to the rope-blocking frame; when the first fixed position is connected to the third fixed position, the rope-blocking rod is fixed at a second position away from the pulley relative to the rope-blocking frame.

[0006] In one embodiment, the lifting pulley block further includes a fourth fixed position, wherein the first fixed position and the fourth fixed position are spaced apart on one of the movable member and the rope guide frame, and the second fixed position and the third fixed position are spaced apart on the other.

[0007] When the first fixed position is connected to the second fixed position, the rope-blocking rod is fixed at the first position relative to the rope-blocking frame; when the fourth fixed position is connected to the third fixed position, the rope-blocking rod is fixed at the second position relative to the rope-blocking frame.

[0008] In one embodiment, the lifting pulley assembly further includes a first fixing member, which is used to fix the first fixing position and the second fixing position together, or to fix the third fixing position and the fourth fixing position together.

[0009] In one embodiment, the rope-blocking frame includes a first limiting groove, which is disposed on the rope-blocking frame and is used to place the rope-blocking rod and limit its movement.

[0010] In one embodiment, the lifting pulley block further includes a second fixing member, one end of the movable member is provided with a first connecting hole, the other end is provided with a second connecting hole, the rope guide frame is provided with a third connecting hole, the first connecting hole and the third connecting hole are connected by the second fixing member, and the movable member passes through the second connecting hole on the rope guide rod.

[0011] In one embodiment, the rope-blocking assembly further includes a plurality of rope-blocking rollers, which are rotatably mounted on the rope-blocking rod in sequence along the axial direction of the rope-blocking rod.

[0012] In one embodiment, the pulley frame includes a second limiting groove, which is respectively disposed on both sides of the pulley frame. The second limiting groove is used to place the rope guide bar and limit its movement.

[0013] In one embodiment, the lifting pulley block further includes a limiting member for limiting and fixing the rope guide rod in conjunction with the second limiting groove. The limiting member is respectively disposed on both sides of the pulley frame and detachably connected to the pulley frame.

[0014] In one embodiment, the lifting pulley block further includes a third fixing member (120), the limiting member includes a third limiting groove and a fourth connecting hole, the pulley frame is also provided with a fifth connecting hole, the fourth connecting hole and the fifth connecting hole are detachably connected through the third fixing member, and the third limiting groove is used to cooperate with the second limiting groove to limit and fix the rope guide rod.

[0015] Another embodiment of this application provides a construction machine, including the lifting pulley block provided in the foregoing embodiments.

[0016] The beneficial effects of this utility model are as follows: When the lifting pulley block is in operation, the first fixed position can be connected to the second fixed position, so that the rope-blocking rod is fixed in the first position near the pulley relative to the rope-blocking frame, and plays the role of blocking the rope. When threading or unthreading the rope in the lifting pulley block, the first fixed position can be connected to the third fixed position, so that the rope-blocking rod is fixed in the second position away from the pulley relative to the rope-blocking frame, thereby increasing the gap between the rope-blocking rod and the pulley, making it easier for the wire rope and wire rope end to pass through. The rope-blocking rod is connected to the rope-blocking frame through a movable part, so that the pitch angle of the rope-blocking rod relative to the rope-blocking frame can be adjusted, and it can be switched between the first position and the second position. With this setting, the rope-blocking rod does not need to be disassembled and reinstalled during the threading or unthreading of the lifting pulley block, reducing the difficulty of threading or unthreading the rope, making the operation simple and quick, reducing the workload and labor intensity, and effectively improving the efficiency of threading or unthreading the rope in the lifting pulley block. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an exploded view of the structure of a lifting pulley block according to an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of a lifting pulley block with the rope guide in the first position according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the structure of a lifting pulley block in the second position according to an embodiment of the present invention.

[0021] Figure 4 for Figure 1 The diagram shows the structure of the pulley, pulley frame, and rope retainer.

[0022] Figure 5 for Figure 1 The diagram shows the structure of the movable part, the first fixed part, and the second fixed part.

[0023] Figure 6 This is a schematic diagram of the structure of a movable component according to an embodiment of the present invention.

[0024] Figure 7 for Figure 1 A schematic diagram of the limiting component and the third fixing component.

[0025] Figure 8This is a schematic diagram of the structure of a limiting member according to an embodiment of the present utility model. Detailed Implementation

[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0028] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0030] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0031] Please refer to Figures 1-8 This invention illustrates a lifting pulley assembly provided in an embodiment of the present invention, comprising: a pulley frame 30, a pulley 20 disposed on the pulley frame 30, a rope guide frame 40 disposed on the pulley frame 30, a first fixed position 50, a second fixed position 60, a third fixed position 70, and a rope guide assembly 10. The rope guide assembly 10 includes a rope guide rod 101 and a movable member 102. One end of the movable member 102 is connected to the rope guide frame 40, and the other end passes through the rope guide rod 101. The first fixed position 50 is provided on one of the movable member 102 and the rope guide frame 40, and the second fixed position 60 and the third fixed position 70 are provided at intervals on the other.

[0032] When the first fixed position 50 is connected to the second fixed position 60, the rope-blocking rod 101 is fixed relative to the rope-blocking frame 40 at a first position close to the pulley 20; when the first fixed position 50 is connected to the third fixed position 70, the rope-blocking rod 101 is fixed relative to the rope-blocking frame 40 at a second position away from the pulley 20.

[0033] In one embodiment, the rope-blocking frame 40 is provided with a first fixing position 50, and the movable member 102 is provided with a second fixing position 60 and a third fixing position 70 spaced apart.

[0034] In this embodiment, the rope-blocking frame 40 is located in the middle of the pulley frame 30. The rope-blocking assembly 10 includes two spaced-apart movable members 102. One end of each movable member 102 is connected to the rope-blocking frame 40, and the other end passes through the rope-blocking rod 101. Each movable member 102 is provided with a first fixing position 50. The rope-blocking frame 40 and the two movable members 102 are respectively provided with second fixing positions 60 and third fixing positions 70 on their respective sides. This arrangement helps to improve the overall stability.

[0035] When the lifting pulley block is in operation, the first fixed position 50 is connected to the second fixed position 60, so that the rope-blocking rod 101 is positioned below the rope-blocking frame 40 and fixed in a first position near the wheel surface of the pulley 20, thus serving as a rope-blocking mechanism. When threading or unthreading the rope in the lifting pulley block, the rope-blocking rod 101 rotates a certain angle relative to the rope-blocking frame 40 via the movable part 102, connecting the first fixed position 50 to the third fixed position 70, so that the rope-blocking rod 101 is positioned above the rope-blocking frame 40 and fixed in a second position away from the wheel surface of the pulley 20, thereby increasing the rope-blocking rod's position. The gap between 101 and pulley 20 facilitates the passage of wire rope and wire rope end. The rope guide rod 101 is connected to the rope guide frame 40 through the movable part 102, so that the pitch angle of the rope guide rod 101 relative to the rope guide frame 40 can be adjusted and can be switched between the first position and the second position. With this setting, the rope guide rod 101 does not need to be disassembled and reinstalled during the process of threading or unthreading the rope of the lifting pulley block, reducing the difficulty of threading or unthreading the rope, making the operation simple and quick, reducing the workload and labor intensity, and effectively improving the efficiency of threading or unthreading the rope of the lifting pulley block.

[0036] In one embodiment, the lifting pulley block further includes a fourth fixed position 80, a movable part 102 and a rope guide frame 40, one of which is provided with a first fixed position 50 and a fourth fixed position 80 spaced apart, and the other is provided with a second fixed position 60 and a third fixed position 70 spaced apart.

[0037] When the first fixed position 50 is connected to the second fixed position 60, the rope-blocking rod 101 is fixed in the first position relative to the rope-blocking frame 40; when the fourth fixed position 80 is connected to the third fixed position 70, the rope-blocking rod 101 is fixed in the second position relative to the rope-blocking frame 40.

[0038] In one embodiment, the rope-blocking frame 40 is provided with a first fixing position 50 and a fourth fixing position 80 spaced apart, and the movable member 102 is provided with a second fixing position 60 and a third fixing position 70 spaced apart.

[0039] like Figures 1-4 and Figure 6 As shown, in this embodiment, the movable component 102 is provided with a first fixed position 50 and a fourth fixed position 80 spaced apart, and the rope-blocking frame 40 is provided with a second fixed position 60 and a third fixed position 70 spaced apart. By connecting the fourth fixed position 80 with the third fixed position 70, not only can the overall stability be improved, but it can also be adapted to the rope-blocking frame 40 and the movable component 102 with a small connection area. This allows the rope-blocking frame 40 and the movable component 102 with a small connection area to fix the rope-blocking rod 101 in the second position, improving the application performance. Of course, multiple first fixed positions 50 and multiple fourth fixed positions 80 can also be provided on the movable component 102 spaced apart, and multiple second fixed positions 60 and multiple third fixed positions 70 can be provided on the rope-blocking frame 40 spaced apart, so that the pitch angle of the rope-blocking rod 101 relative to the rope-blocking frame 40 and the gap size relative to the pulley 20 can be adjusted according to actual needs, further improving the efficiency of threading or unthreading the rope in the lifting pulley group.

[0040] In one embodiment, the lifting pulley block further includes a first fixing member 90, which is used to fix the first fixing position 50 and the second fixing position 60, or to fix the third fixing position 70 and the fourth fixing position 80.

[0041] When the first fixed position 50 and the second fixed position 60 are fixedly connected by the first fixing member 90, the rope-blocking rod 101 is fixed in the first position relative to the rope-blocking frame 40; when the fourth fixed position 80 and the third fixed position 70 are fixedly connected by the first fixing member 90, the rope-blocking rod 101 is fixed in the second position relative to the rope-blocking frame 40.

[0042] like Figures 1-6 As shown, in this embodiment, the first fixing position 50 and the fourth fixing position 80 are respectively a first pin hole and a fourth pin hole spaced apart on the movable member 102, the second fixing position 60 and the third fixing position 70 are respectively a second pin hole and a third pin hole spaced apart on the rope retainer 40, and the first fixing member 90 is a fixing pin; as Figure 2 As shown, when the first pin hole and the second pin hole correspond and the fixing pin is simultaneously inserted into the first pin hole and the second pin hole, the rope-blocking rod 101 is positioned below the rope-blocking bracket 40 and fixed in a first position near the wheel surface of the pulley 20; as Figure 3As shown, when the third and fourth pin holes correspond and the fixing pin is simultaneously inserted into both holes, the rope guide rod 101 is positioned above the rope guide frame 40 and fixed in a second position away from the pulley 20. Of course, the fixing pin can also be replaced with bolts or other fasteners.

[0043] In one embodiment, the rope-blocking frame 40 includes a first limiting groove 401, which is disposed on the rope-blocking frame 40 and is used to place the rope-blocking rod 101 and limit its movement.

[0044] A first limiting groove 401 or multiple first limiting grooves 401 can be set on the rope-blocking frame 40 as needed to place the rope-blocking rod 101 and limit its movement.

[0045] like Figure 1-4 As shown, in this embodiment, two first limiting grooves 401 are spaced apart on the rope-blocking frame 40. When the lifting pulley block is working, the first fixed position 50 is connected to the second fixed position 60, so that the rope-blocking rod 101 is fixed relative to the rope-blocking frame 40 at a first position close to the wheel surface of the pulley 20. At the same time, the rope-blocking rod 101 is located in the two first limiting grooves 401, which is beneficial to improve stability and overall strength during the rope blocking process.

[0046] In one embodiment, the lifting pulley block further includes a second fixing member 100, a movable member 102 with a first connecting hole 1021 at one end and a second connecting hole 1022 at the other end, a rope guide frame 40 with a third connecting hole 402, the first connecting hole 1021 and the third connecting hole 402 being connected by the second fixing member 100, and the movable member 102 being threaded through the second connecting hole 1022 onto the rope guide rod 101.

[0047] like Figures 1-6 As shown, in this embodiment, the first connecting hole 1021 and the third connecting hole 402 are connected by the second fixing member 100 so that the movable member 102 is rotatably connected to the rope retainer 40. The second fixing member 100 is one of a rotating pin, a fixing pin, or a bolt.

[0048] In one embodiment, the rope-blocking assembly 10 further includes a plurality of rope-blocking rollers 103, which are rotatably mounted on the rope-blocking rod 101 along the axial direction of the rope-blocking rod 101.

[0049] like Figures 1-3 As shown, in this embodiment, a rope-blocking roller 103 is fitted on the rope-blocking rod 101 to prevent the wire rope from being directly damaged by friction with the rope-blocking rod 10. The rope-blocking roller 103 is a nylon roller.

[0050] In one embodiment, the pulley frame 30 includes a second limiting groove 301, which is respectively disposed on both sides of the pulley frame 30. The second limiting groove 301 is used to place the rope guide bar 101 and limit its movement.

[0051] like Figure 2 and Figure 4 As shown, in this embodiment, when the lifting pulley block is working, the first fixed position 50 is connected to the second fixed position 60, so that the rope-blocking rod 101 is fixed at the first position near the wheel surface of the pulley 20 relative to the rope-blocking frame 40. At the same time, the two ends of the rope-blocking rod 101 are respectively provided in the second limiting grooves 301 on both sides of the pulley frame 30. This not only helps to further improve stability and overall strength during the rope blocking process, but also can be applied to longer rope-blocking rods 101, improving adaptability.

[0052] like Figures 1-3 and Figures 7-8 As shown, in one embodiment, the lifting pulley block further includes a limiting member 110 for limiting and fixing the rope guide rod 101 in conjunction with the second limiting groove 301. The limiting member 110 is respectively provided on both sides of the pulley frame 30 and is detachably connected to the pulley frame 30.

[0053] When the lifting pulley block is in operation, the first fixed position 50 is connected to the second fixed position 60, so that the rope-blocking rod 101 is fixed in the first position near the wheel surface of the pulley 20 relative to the rope-blocking frame 40. At the same time, the two ends of the rope-blocking rod 101 are respectively set in the second limiting grooves 301 on both sides of the pulley frame 30. The limiting member 110 cooperates with the second limiting grooves 301 to limit and fix the rope-blocking rod 101. When the rope is threaded or unthreaded in the lifting pulley block, the limiting member 110 is disassembled, and the rope-blocking rod 101 can be moved out from the second limiting groove 301 and rotated at a certain angle relative to the rope-blocking frame 40 through the movable member 102. The third fixed position 70 is connected to the fourth fixed position 80, so that the rope-blocking rod 101 is fixed in the second position away from the wheel surface of the pulley 20 relative to the rope-blocking frame 40. The circumferential and radial movement of the rope-blocking rod 101 is restricted by the limiting member 110 and the second limiting groove 301, which prevents the rope-blocking rod 101 from detaching during the rope-blocking process and causing safety accidents, thereby improving the overall reliability and safety, and facilitating disassembly and maintenance.

[0054] In one embodiment, the lifting pulley block further includes a third fixing member 120, and a limiting member 110 includes a third limiting groove 1101 and a fourth connecting hole 1102. The pulley frame 30 is also provided with a fifth connecting hole 302. The fourth connecting hole 1102 and the fifth connecting hole 302 are detachably connected by the third fixing member 120. The third limiting groove 1101 is used to cooperate with the second limiting groove 301 to limit and fix the rope-blocking rod 101.

[0055] like Figures 1-4 and Figures 7-8As shown, in this embodiment, the third limiting groove 1101 is located in the middle of the limiting member 110, and the fourth connecting holes 1102 are respectively located at both ends of the limiting member 110. The pulley frame 30 also includes two fifth connecting holes 302, which are respectively located at the upper and lower ends of the second limiting groove 301. Each fourth connecting hole 1102 and each fifth connecting hole 302 correspond to each other and are detachably connected by the third fixing member 120. When threading or unthreading the rope in the lifting pulley block, the third fixing member 120 is used to secure the rope. The fixed part 120 is disassembled and the fourth connecting hole 1102 and the fifth connecting hole 302 at one end of the limiting part 110 are separated, so that the rope-blocking rod 101 can be moved out from the second limiting groove 301 and rotated at a certain angle relative to the rope-blocking frame 40 through the movable part 102, and the third fixed position 70 is connected to the fourth fixed position 80, so that the rope-blocking rod 101 is fixed in the second position relative to the rope-blocking frame 40 and away from the wheel surface of the pulley 20. The third fixed part 120 is one of the rotating pin, the fixed pin, and the bolt.

[0056] The lifting pulley block provided in this application can be used in cranes, log grabbers, forklift cranes, crawler cranes, aerial work platforms, special vehicles, etc., without any restrictions.

[0057] Another embodiment of this application provides a construction machine including the lifting pulley block provided in the foregoing embodiments. Such construction machine reduces workload and labor intensity, and improves efficiency.

[0058] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A lifting pulley system, characterized in that, include: The pulley frame (30), the pulley (20) provided on the pulley frame (30), the rope guide frame (40) provided on the pulley frame (30), the first fixed position (50), the second fixed position (60), the third fixed position (70) and the rope guide assembly (10), the rope guide assembly (10) includes a rope guide rod (101) and a movable part (102), one end of the movable part (102) is connected to the rope guide frame (40), and the other end passes through the rope guide rod (101). The first fixed position (50) is provided on one of the movable part (102) and the rope guide frame (40), and the second fixed position (60) and the third fixed position (70) are provided at intervals on the other. When the first fixed position (50) is connected to the second fixed position (60), the rope-blocking rod (101) is fixed at a first position near the pulley (20) relative to the rope-blocking frame (40); when the first fixed position (50) is connected to the third fixed position (70), the rope-blocking rod (101) is fixed at a second position away from the pulley (20) relative to the rope-blocking frame (40).

2. The lifting pulley block according to claim 1, characterized in that, The lifting pulley block also includes a fourth fixed position (80). One of the movable part (102) and the rope retainer (40) is provided with the first fixed position (50) and the fourth fixed position (80) spaced apart, and the other is provided with the second fixed position (60) and the third fixed position (70) spaced apart. When the first fixed position (50) is connected to the second fixed position (60), the rope-blocking rod (101) is fixed in the first position relative to the rope-blocking frame (40); when the fourth fixed position (80) is connected to the third fixed position (70), the rope-blocking rod (101) is fixed in the second position relative to the rope-blocking frame (40).

3. The lifting pulley block according to claim 2, characterized in that, The lifting pulley assembly also includes a first fixing member (90), which is used to fix the first fixing position (50) and the second fixing position (60) together, or to fix the third fixing position (70) and the fourth fixing position (80) together.

4. The lifting pulley block according to claim 1, characterized in that, The rope-blocking frame (40) includes a first limiting groove (401), which is disposed on the rope-blocking frame (40) and is used to place the rope-blocking rod (101) and limit its movement.

5. The lifting pulley block according to claim 1, characterized in that, The lifting pulley block also includes a second fixing member (100). One end of the movable member (102) is provided with a first connecting hole (1021) and the other end is provided with a second connecting hole (1022). The rope guide frame (40) is provided with a third connecting hole (402). The first connecting hole (1021) and the third connecting hole (402) are connected through the second fixing member (100). The movable member (102) passes through the second connecting hole (1022) on the rope guide rod (101).

6. The lifting pulley block according to claim 1, characterized in that, The rope-blocking assembly (10) further includes a plurality of rope-blocking rollers (103), which are rotatably mounted on the rope-blocking rod (101) in sequence along the axial direction of the rope-blocking rod (101).

7. The lifting pulley block according to claim 1, characterized in that, The pulley frame (30) includes a second limiting groove (301), which is respectively disposed on both sides of the pulley frame (30). The second limiting groove (301) is used to place the rope guide rod (101) and limit its movement.

8. The lifting pulley block according to claim 7, characterized in that, The lifting pulley assembly also includes a limiting member (110) for limiting and fixing the rope guide rod (101) in conjunction with the second limiting groove (301). The limiting member (110) is respectively provided on both sides of the pulley frame (30) and is detachably connected to the pulley frame (30).

9. The lifting pulley block according to claim 8, characterized in that, The lifting pulley assembly also includes a third fixing member (120). The limiting member (110) includes a third limiting groove (1101) and a fourth connecting hole (1102). The pulley frame (30) is also provided with a fifth connecting hole (302). The fourth connecting hole (1102) and the fifth connecting hole (302) are detachably connected by the third fixing member (120). The third limiting groove (1101) is used to cooperate with the second limiting groove (301) to limit and fix the rope rod (101).

10. A construction machine, characterized in that, Includes the load-bearing pulley block as described in any one of claims 1 to 9.

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