Stable structure for pulley seat and cloth distributor hoisting assembly

Abstract

The application provides a stable structure for a pulley seat and a material distributor hoisting assembly, and belongs to the technical field of pulley seat accessories. The stable structure for the pulley seat comprises a cross beam and two limiting components. The cross beam is used for being installed on the pulley seat. The two limiting components are arranged on the cross beam along the length direction of the cross beam and are in sliding connection with the cross beam, so that the two limiting components can move towards each other or move away from each other. Each limiting component and the cross beam are provided with an elastic reset member, which is used for driving the corresponding limiting component to move away from the other limiting component, so that the limiting component abuts against the inner wall of the vertical shaft. Compared with the prior art, the stable structure for the pulley seat and the material distributor hoisting assembly can avoid synchronous rotation of the pulley seat and the hoisted object, thereby avoiding torsion of the steel wire rope and improving the stability of the pulley seat during use.

Description

Technical Field

[0001] This utility model belongs to the technical field of pulley seat accessories, and more specifically, it relates to a stabilizing structure for pulley seats and a cloth placing device hoisting assembly. Background Technology

[0002] A material distributor is a mechanical device used to evenly distribute materials, and it is widely used in industries such as metallurgy, chemical industry, building materials, power, and grain processing. In the production process of a vertical lime kiln, the material distributor is slidably installed inside the feeding shaft and is lifted and positioned using hoisting equipment.

[0003] Common hoisting equipment in the prior art includes wire ropes, pulleys, and lifting devices. The pulleys are connected to the placing boom, one end of the wire rope is fixedly connected to the upper end of the loading well, and the other end passes over the pulley and is connected to the lifting device. When the lifting device is started, the wire rope is extended and retracted, driving the placing boom to rise and fall.

[0004] The inventors discovered that during the use of the fabric placing device, it will rotate and swing, and transmit torque through its connection with the pulley seat, causing the pulley seat to rotate synchronously. This causes the wire rope to tighten, affecting the lifting and positioning of the fabric placing device, shortening the fatigue life of the wire rope, and may even lead to safety accidents such as wire rope breakage. Utility Model Content

[0005] The purpose of this application is to provide a stable structure for a pulley seat and a lifting assembly for a material placing device, so as to solve the technical problem that the pulley seat receives torque transmitted by the material placing device during use, which causes it to rotate, resulting in the wire rope tightening, affecting the positioning of the material placing device, and shortening the service life of the wire rope.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A sturdy structure for a pulley seat is provided, the pulley seat cooperating with a rotating component to receive torque generated by the rotating component; and the pulley seat is used to enter a vertical shaft with the rotating component, the vertical shaft having a non-circular cross-section; characterized in that it comprises: A crossbeam for mounting on the pulley seat; and Two limiting members are spaced apart on the crossbeam along its length and are slidably connected to the crossbeam to allow the two limiting members to move toward each other or away from each other. Each of the limiting components has an elastic reset member between itself and the crossbeam. The elastic reset member is used to drive the corresponding limiting component to move away from the other limiting component so that the limiting component abuts against the inner wall of the shaft.

[0007] In one possible implementation, the limiting member includes: The mounting base is slidably connected to the crossbeam; the outer side of the mounting base is provided with an arc groove; A limiting ball is rolled within the arc-shaped groove; and An end cap is detachably connected to the mounting base, and the end cap is provided with a through hole communicating with the arc-shaped groove; When the end cap is connected to the mounting base and the limiting ball is in the arc-shaped groove, the end cap abuts against the limiting ball, and part of the limiting ball extends out from the through hole.

[0008] In one possible implementation, the end cap is fitted onto the mounting base along the circumference of the arcuate groove and is threadedly connected to the mounting base.

[0009] In one possible implementation, the pulley seat with a sturdy structure further includes: A fixing component is provided on the crossbeam for connection with the pulley seat.

[0010] In one possible implementation, the fixing member includes: Two mounting plates are arranged side-by-side on the crossbeam along its length and are respectively located on both sides of the pulley seat; each mounting plate has multiple threaded holes extending through the crossbeam along its length; and Multiple fixing bolts correspond one-to-one with multiple threaded holes. Each fixing bolt is threadedly connected to the corresponding threaded hole, and the end of each fixing bolt is adapted to abut against the pulley seat to fix the position of the pulley seat.

[0011] In one possible implementation, ribs are provided on the opposite sides of the two mounting plates, and the ribs are connected to the crossbeam.

[0012] In one possible implementation, the crossbeam has two positioning rods arranged side by side along its length, and the two mounting seats are slidably connected to the two positioning rods respectively.

[0013] In one possible implementation, the mounting base further includes: A sliding seat is disposed on the mounting base and is slidably connected to the positioning rod.

[0014] In one possible implementation, the elastic reset element is a compression spring; the compression spring is sleeved on the corresponding positioning rod, and both ends of the compression spring are fixedly connected to the mounting base and the positioning rod, respectively. Each of the compression springs is in an elastic deformation state to drive the two mounting seats to move in opposite directions.

[0015] In this embodiment, under the action of the elastic reset member, the two limiting members are at their maximum spacing position after moving backward along the length of the beam, i.e., in a naturally unfolded state. At this time, the outer end face of the limiting member exceeds the contour range of the pulley seat. When the pulley seat enters the shaft with the hoisting equipment, the outer end face of the limiting member will first contact the inner wall of the shaft. If the distance between the inner walls of the shaft is less than the initial unfolding distance of the limiting member, the inner wall will squeeze the limiting member, causing it to overcome the elastic force of the elastic reset member and slide and contract along the beam until the entire pulley seat can smoothly enter the shaft. When the pulley seat is fully extended... Once fully inserted into the shaft, the elastic reset component releases its elasticity, pushing the two limiting components to slide backward along the crossbeam until the outer end faces of the limiting components are tightly against the inner walls of both sides of the shaft. At this point, the limiting components form a rigid contact with the inner wall of the shaft, fixing the pulley seat horizontally. The torque generated by the rotating component during operation is transmitted to the pulley seat, which then transmits the torque to the two limiting components through the crossbeam. Since the limiting components are already pressed against the inner wall of the shaft, the inner wall generates a reverse frictional force or supporting reaction force on the limiting components, thereby offsetting the rotational torque and preventing the wire rope from twisting due to torque accumulation.

[0016] The sturdy structure for the pulley seat provided in this application embodiment, compared with the prior art, can prevent the pulley seat and the hoisted object from rotating synchronously through the design of "sliding limit + elastic reset", thereby preventing the wire rope from twisting and improving the stability of the pulley seat during use.

[0017] The technical solution adopted in this application also provides a material placing device hoisting assembly, including a stabilizing structure for the pulley seat proposed in any of the foregoing.

[0018] The beneficial effects of the fabric placing device hoisting assembly provided in this embodiment are the same as those of the aforementioned stabilizing structure for pulley seats, and will not be repeated here. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural diagram of the sturdy structure for the pulley seat provided in the embodiments of this application. Figure 1 ; Figure 2 This is a top view schematic diagram of the stabilizing structure for a pulley seat provided in an embodiment of this application; Figure 3 A three-dimensional structural diagram of the sturdy structure for the pulley seat provided in the embodiments of this application. Figure 2 ; Figure 4 A three-dimensional structural diagram of the limiting member provided in the embodiments of this application; Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the limiting component shown; The following are the labeling elements in the figure: 1. Crossbeam; 11. Positioning rod; 2. Limiting component; 21. Mounting seat; 211. Sliding seat; 22. Limiting ball; 23. End cap; 3. Elastic reset component; 4. Fixing component; 41. Mounting plate; 411. Rib plate; 42. Fixing bolt; 5. Pulley seat; 6. Shaft; 7. Material placing device. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0025] Please refer to the following: Figures 1 to 5The present application describes the stabilizing structure for the pulley seat and the hoisting assembly for the fabric placing device. The stabilizing structure for the pulley seat includes a pulley seat 5 that cooperates with a rotating component to receive the torque generated by the rotating component; furthermore, the pulley seat 5 is used to enter a vertical shaft 6 along with the rotating component, the cross-section of the vertical shaft 6 being non-circular; characterized in that it includes a crossbeam 1 and two limiting members 2.

[0026] The crossbeam 1 is used to be installed on the pulley seat 5; two limiting members 2 are spaced apart on the crossbeam 1 along the length direction of the crossbeam 1 and are slidably connected to the crossbeam 1 so as to allow the two limiting members 2 to move towards each other or away from each other.

[0027] Each limiting member 2 has an elastic reset member 3 between it and the crossbeam 1. The elastic reset member 3 is used to drive the corresponding limiting member 2 to move away from the other limiting member 2 so that the limiting member 2 abuts against the inner wall of the shaft 6.

[0028] Working principle of limiting component 2: When the pulley seat 5 enters the non-circular vertical shaft 6 with the hoisting equipment, the two limiting components 2 initially unfold in opposite directions under the action of the elastic reset component 3, with a large gap; when entering the vertical shaft 6, the inner wall of the vertical shaft 6 squeezes the limiting components 2, causing them to overcome the elastic force and slide and contract towards each other along the crossbeam 1 until the pulley seat 5 is fully entered; then the elastic reset component 3 releases the elastic force, pushing the limiting components 2 to slide in opposite directions and tightly abut against the inner wall of the vertical shaft 6; when the torque generated by the rotating component is transmitted to the pulley seat 5, the torque is transmitted to the two limiting components 2 through the crossbeam 1, while the reaction force of the inner wall of the vertical shaft 6 on the limiting components 2 cancels out the torque and prevents the wire rope from twisting.

[0029] This application, through the elastic reset component 3 and sliding design, can automatically adjust the spacing of the limiting component 2, and can adapt to non-circular vertical shafts 6 of different sizes, with strong versatility; the rigid contact between the inner wall of the vertical shaft 6 and the limiting component 2 directly offsets the torque through the reaction force of the inner wall, avoiding the entanglement or breakage of the wire rope due to torsion; the structure of this application only requires a crossbeam 1, a limiting component 2 and an elastic reset component 3, without a complex drive system, and is low in cost and easy to maintain.

[0030] In this embodiment, under the action of the elastic reset member 3, the two limiting members 2 are at their maximum spacing position after moving backward along the length of the crossbeam 1, i.e., in a naturally unfolded state; at this time, the outer end face of the limiting member 2 exceeds the contour range of the pulley seat 5; when the pulley seat 5 enters the shaft 6 with the hoisting equipment, the outer end face of the limiting member 2 will first contact the inner wall of the shaft 6; if the spacing between the inner walls of the shaft 6 is less than the initial unfolding spacing of the limiting member 2, the inner wall will squeeze the limiting member 2, causing it to overcome the elastic force of the elastic reset member 3 and slide and contract towards each other along the crossbeam 1 until the entire pulley seat 5 can smoothly enter the shaft 6; when the pulley seat 5 After fully entering the shaft 6, the elastic force of the elastic reset member 3 is released, pushing the two limiting members 2 to slide back along the crossbeam 1 until the outer end face of the limiting member 2 tightly abuts against the inner walls of both sides of the shaft 6; at this time, the limiting member 2 forms a rigid contact with the inner wall of the shaft 6, fixing the pulley seat 5 in the horizontal direction; the torque generated when the rotating part works is transmitted to the pulley seat 5, and the pulley seat 5 transmits the torque to the two limiting members 2 through the crossbeam 1; since the limiting member 2 has abutted against the inner wall of the shaft 6, the inner wall generates a reverse frictional force or supporting reaction force on the limiting member 2, thereby offsetting the rotational torque and preventing the wire rope from twisting due to torque accumulation.

[0031] The sturdy structure for the pulley seat provided in this application embodiment, compared with the prior art, can prevent the pulley seat 5 from rotating synchronously with the object being hoisted through the design of "sliding limit + elastic reset", thereby preventing the wire rope from twisting and improving the stability of the pulley seat 5 during use.

[0032] In some embodiments, the limiting member 2 may be adopted as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The limiting component 2 includes a mounting base 21, a limiting ball 22, and an end cap 23.

[0033] Mounting base 21 is slidably connected to crossbeam 1; an arc-shaped groove is provided on the outer side of mounting base 21; a limiting ball 22 is slidably connected to the arc-shaped groove; end cap 23 is detachably connected to mounting base 21, and a through hole communicating with the arc-shaped groove is provided on end cap 23; the arc-shaped groove can limit the rolling range of the limiting ball 22, and the end cap 23 can prevent the limiting ball 22 from falling out, ensuring that the limiting ball 22 is always in effective contact with the inner wall and maintaining the anti-torsion effect.

[0034] When the end cap 23 is connected to the mounting base 21 and the limiting ball 22 is in the arc groove, the end cap 23 abuts against the limiting ball 22, and part of the limiting ball 22 extends out from the through hole.

[0035] The limiting component 2 consists of a mounting base 21, a limiting ball 22 in an arc groove, and an end cap 23 with a through hole. After the end cap 23 is connected to the mounting base 21, part of the limiting ball 22 extends out of the through hole and abuts against the inner wall of the shaft 6. When the pulley seat 5 moves along the shaft 6, the limiting ball 22 rolls in the arc groove, which can convert sliding friction into rolling friction, thereby reducing the moving resistance.

[0036] In some embodiments, the end cap 23 may be adopted as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 Along the circumference of the arc-shaped groove, the end cap 23 is fitted onto the mounting base 21 and is threadedly connected to the mounting base 21.

[0037] The end cap 23 is fitted onto the mounting base 21 along the circumference of the arc groove and is fixed by a threaded connection. The threaded connection provides uniform radial pressure, so that the end cap 23 fits tightly against the mounting base 21, restricting the limit ball 22 to protrude only from the through hole, while ensuring that the limit ball 22 rolls freely in the arc groove. The threaded connection facilitates the disassembly of the end cap 23, making it convenient to replace the worn limit ball 22 or clean the debris in the arc groove, and making maintenance convenient.

[0038] In some embodiments, the aforementioned stabilizing structure may employ, for example... Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The pulley seat's sturdy structure also includes a fixing component 4.

[0039] Fixed component 4 is set on crossbeam 1 and is used to connect with pulley seat 5.

[0040] The fixing component 4 is set on the crossbeam 1 and serves as the connection interface between the crossbeam 1 and the pulley seat 5. The crossbeam 1 is firmly installed on the pulley seat 5 by mechanical fixing, such as bolts or welding, to ensure that there is no relative displacement between the crossbeam 1 and the pulley seat 5 when the torque is transmitted. The fixing component 4 strengthens the connection between the crossbeam 1 and the pulley seat 5, avoids loosening or falling off due to torque transmission, and improves the overall reliability of the structure.

[0041] In some embodiments, the fixing member 4 described above may be as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The fixing component 4 includes two mounting plates 41 and multiple fixing bolts 42.

[0042] Two mounting plates 41 are arranged side by side on the crossbeam 1 along the length of the crossbeam 1 and are located on both sides of the pulley seat 5 respectively; each mounting plate 41 has multiple threaded holes that pass through the crossbeam 1 along the length of the crossbeam 1.

[0043] Multiple fixing bolts 42 correspond one-to-one with multiple threaded holes. Each fixing bolt 42 is threadedly connected to the corresponding threaded hole, and the end of each fixing bolt 42 is adapted to abut against the pulley seat 5 to fix the position of the pulley seat 5.

[0044] Two mounting plates 41 are arranged side by side along the length of the crossbeam 1. Each mounting plate 41 has multiple threaded holes along the length of the crossbeam 1. Fixing bolts 42 are used to engage with the threaded holes, with the ends of the bolts abutting against the pulley seat 5. The axial pressure of the multi-point bolts secures the mounting plate 41 to the pulley seat 5. The multiple threaded holes allow for adjustment of the bolt position to accommodate pulley seats 5 of different sizes or shapes, enhancing versatility. The mounting plates 41 are located on both sides of the pulley seat 5. The symmetrical distribution of the multi-point bolts ensures uniform force distribution, preventing the crossbeam 1 from tilting due to unilateral force and ensuring that the sliding direction of the limiting member 2 is aligned with the inner wall of the shaft 6.

[0045] In some embodiments, the mounting plate 41 described above may be as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The two mounting plates 41 are provided with ribs 411 on opposite sides, and the ribs 411 are connected to the crossbeam 1.

[0046] The ribs 411 on the opposite side of the mounting plate 41 are connected to the crossbeam 1 to form a triangular support structure, which enhances the bending stiffness of the mounting plate 41. When the bolts are tightened or the torque is transmitted, the ribs 411 can disperse the stress and prevent the mounting plate 41 from deforming due to excessive force. The ribs 411 can significantly improve the strength and stability of the mounting plate 41, reduce the risk of deformation during long-term use, and extend the service life.

[0047] In some embodiments, the aforementioned crossbeam 1 may be as follows: Figures 1 to 3 The structure shown is described in the following document. Figures 1 to 3 The crossbeam 1 has two positioning rods 11 arranged side by side along its length, and two mounting seats 21 are slidably connected to the two positioning rods 11 respectively.

[0048] Two positioning rods 11 are arranged side by side along the length direction on the crossbeam 1. The mounting base 21 is slidably connected to the positioning rods 11 through a sliding structure. The positioning rods 11 provide linear guidance for the sliding of the mounting base 21, ensuring that the limiting component 2 slides accurately along the length direction of the crossbeam 1 and avoids deviation. The side-by-side design of the two positioning rods 11 makes the mounting base 21 bear force in a balanced manner, reduces unilateral wear, and extends the service life of the positioning rods 11 and the mounting base 21.

[0049] In some embodiments, the mounting base 21 may be as follows: Figures 1 to 5 The structure shown is described in the following document. Figures 1 to 5 The mounting base 21 also includes a sliding base 211.

[0050] The sliding seat 211 is mounted on the mounting base 21 and is slidably connected to the positioning rod 11.

[0051] The mounting base 21 is provided with a sliding seat 211, which is directly slidably engaged with the positioning rod 11. The sliding seat 211 can be made of low-friction material or have a built-in lubrication structure to reduce the frictional resistance with the positioning rod 11. The sliding seat 211 can further reduce the sliding resistance, improve the response speed of the limiting member 2, and make the mounting base 21 more flexible when it retracts or expands.

[0052] In some embodiments, the aforementioned elastic reset member 3 may be adopted as follows: Figures 1 to 3 The structure shown is described in the following document. Figures 1 to 3 The elastic reset element 3 is a compression spring; the compression spring is sleeved on the corresponding positioning rod 11, and the two ends of the compression spring are fixedly connected to the mounting base 21 and the positioning rod 11 respectively.

[0053] Each compression spring is in an elastic deformation state to drive the two mounting bases 21 to move in opposite directions.

[0054] A compression spring is fitted onto the positioning rod 11, with both ends fixed to the mounting base 21 and the positioning rod 11, respectively. Initially, the compression spring is in a pre-compressed state. When the limiting member 2 slides towards each other, the compression spring is further compressed. After entering the shaft 6, the compression spring releases its elastic force, pushing the mounting base 21 to slide away from each other, causing the limiting member 2 to abut against the inner wall. The positioning rod 11 can serve as a guide structure for the compression spring, preventing it from bending and deforming due to force, ensuring that the direction of the elastic force is consistent with the sliding direction, and making the reset more reliable. The pre-compressed compression spring provides initial elastic force, ensuring that the limiting member 2 can quickly abut against the inner wall after entering the shaft 6, avoiding anti-torsion failure due to the relaxation of the compression spring.

[0055] The technical solution adopted in this application also provides a material placing device hoisting assembly, including the stabilizing structure for the pulley seat proposed in any of the preceding claims.

[0056] The hoisting assembly integrates the above-mentioned sturdy structure. During the hoisting process of the placing boom 7, when the pulley seat 5 enters the shaft 6 with the hoisting equipment, the anti-twist structure abuts against the inner wall through the limiting component 2 to offset the torque when the placing boom 7 rotates, thus preventing the wire rope from twisting. The anti-twist design of the wire rope reduces the risk of breakage caused by twisting during the hoisting process and improves the safety of hoisting the placing boom 7.

[0057] The beneficial effects of the fabric placing device hoisting assembly provided in this embodiment are the same as those of the aforementioned stabilizing structure for pulley seats, and will not be repeated here.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pulley seat with a stable structure, the pulley seat cooperating with a rotating component to receive the torque generated by the rotating component; and the pulley seat being used to enter a vertical shaft with the rotating component, the cross-section of the vertical shaft being non-circular; characterized in that, include: A crossbeam is used for mounting on the pulley seat; as well as Two limiting members are spaced apart on the crossbeam along its length and are slidably connected to the crossbeam to allow the two limiting members to move toward each other or away from each other. Each of the limiting components has an elastic reset member between itself and the crossbeam. The elastic reset member is used to drive the corresponding limiting component to move away from the other limiting component so that the limiting component abuts against the inner wall of the shaft.

2. The stabilizing structure for a pulley block according to claim 1, wherein The limiting component includes: The mounting base is slidably connected to the crossbeam; the outer side of the mounting base is provided with an arc groove; A limiting ball is rolled within the arc-shaped groove; and An end cap is detachably connected to the mounting base, and the end cap is provided with a through hole communicating with the arc-shaped groove; When the end cap is connected to the mounting base and the limiting ball is in the arc-shaped groove, the end cap abuts against the limiting ball, and part of the limiting ball protrudes from the through hole.

3. The stabilizing structure for a pulley block according to claim 2, wherein Along the circumference of the arc-shaped groove, the end cap is fitted onto the mounting base and is threadedly connected to the mounting base.

4. The stabilizing structure for a pulley seat according to claim 1, wherein The stabilizing structure for the pulley seat also includes: A fixing component is provided on the crossbeam for connection with the pulley seat.

5. The stabilizing structure for a pulley block according to claim 4, wherein The fixing component includes: Two mounting plates are arranged side-by-side on the crossbeam along its length and are respectively located on both sides of the pulley seat; each mounting plate has multiple threaded holes extending through the crossbeam along its length; and Multiple fixing bolts correspond one-to-one with multiple threaded holes. Each fixing bolt is threadedly connected to the corresponding threaded hole, and the end of each fixing bolt is adapted to abut against the pulley seat to fix the position of the pulley seat.

6. The stabilizing structure for a pulley block according to claim 5, wherein Ribs are provided on the opposite sides of the two mounting plates, and the ribs are connected to the crossbeam.

7. The stabilizing structure for a pulley block according to claim 2, wherein The crossbeam has two positioning rods arranged side by side along its length, and the two mounting seats are slidably connected to the two positioning rods respectively.

8. The stabilizing structure for a pulley block according to claim 7, wherein The mounting base also includes: A sliding seat is disposed on the mounting base and is slidably connected to the positioning rod.

9. The stabilizing structure for a pulley block according to claim 7 or 8, wherein The elastic reset component is a compression spring; the compression spring is sleeved on the corresponding positioning rod, and the two ends of the compression spring are fixedly connected to the mounting base and the positioning rod, respectively; Each of the compression springs is in an elastic deformation state to drive the two mounting bases to move in opposite directions.

10. A spreader hoist assembly characterized by, A sturdy structure for a pulley seat, including any one of claims 1-9.

Images