A telescoping assembly and flexible sling

Abstract

This utility model relates to the field of lifting equipment technology, specifically to a telescopic component and a flexible sling. One telescopic component includes a housing, within which a winding shaft for winding the sling is rotatably mounted, and several guide shafts for horizontally guiding the sling. A horizontal locking block is provided on one side of the housing, positioned above one of the guide shafts. The locking block clamps and secures the sling between itself and the guide shafts. This technical solution achieves flexible adjustment of the sling length through the winding shaft's retraction and extension function. The housing provides protection and constraint for both ends of the sling, the guide shafts guide and limit the sling's movement, and the locking block fixes the sling's position, effectively preventing uncontrolled sling ends and reducing safety risks during lifting operations.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically to a telescopic component and a flexible sling. Background Technology

[0002] Lifting slings are widely used in construction engineering, ship loading and unloading, and automobile transportation, especially in situations requiring safe and stable lifting and securing of objects. For example, in oil, machinery plants, and automobile manufacturing plants, lifting slings are used to flip and lift various workpieces and equipment, ensuring the smooth operation of the production process.

[0003] Currently, due to the relatively long fixed length of existing slings, the connection position between the sling and the lifting mechanism needs to be designed according to the actual situation. The existing sling length adjustment device can only move and change the position on the sling. This results in uneven stress on the sling during the lifting process, and the two ends of the sling are not stressed and are not restrained during the lifting operation, which poses certain risks. Utility Model Content

[0004] To address the aforementioned technical deficiencies, the purpose of this utility model is to provide a telescopic component and a flexible sling. One telescopic component includes a housing, within which a winding shaft for winding the sling is rotatably mounted, and several guide shafts for horizontally guiding the sling. A horizontal locking block is provided on one side of the housing, located above one of the guide shafts. The locking block clamps and secures the sling between the locking block and the guide shaft.

[0005] In order to achieve the locking and releasing of the sling by the locking block, the following features are specifically provided: the end of the locking block facing the inside of the housing is provided with a tapered head with a gradually decreasing taper, and an adjusting screw is coaxially mounted on the end of the locking block relative to the tapered head. The adjusting screw is helically installed in a threaded hole provided on one side of the housing.

[0006] To facilitate the rotation of the adjusting screw, the following feature is specifically provided: a screw cap is coaxially provided at one end of the adjusting screw located outside the housing.

[0007] To ensure that the locking block can contact the limiting baffle on the guide shaft during translation, the following features are specifically provided: two limiting baffles are coaxially arranged on the guide shaft, and the distance between the limiting baffles is the same as the width of the sling.

[0008] In order to fix the position of the guide shaft within the housing and restrict its rotation to ensure its clamping force on the sling, the following features are specifically provided: pin heads are provided at both ends of the guide shaft along the axis, and the guide shaft is inserted into the fixing sleeve provided within the housing through the pin heads at both ends. The cross-sectional shape of the pin heads and the fixing sleeves along the radial direction of the guide shaft is rectangular.

[0009] To improve the ability of the winding shaft to withstand tensile forces during hoisting, the following features are specifically designed: positioning grooves are coaxially provided at both ends of the housing, and a support ring matching the positioning groove is provided inside the housing, with the support ring inserted into the positioning groove at both ends of the housing.

[0010] To facilitate the connection of the crane, the following features are specifically provided: connecting brackets for connecting the crane are fixedly installed on both sides of the outer side of the housing.

[0011] A flexible sling includes a telescopic component installed at both ends.

[0012] The advantages of this utility model compared to the prior art are: Firstly, this utility model achieves flexible adjustment of the sling length through the winding and unwinding function of the winding shaft. The shell provides protection and restraint for both ends of the sling, the guide shaft guides and limits the sling, and the locking block fixes the position of the sling, effectively restraining the problem of uncontrolled ends of the sling and reducing the safety risks of hoisting operations.

[0013] Secondly, this utility model can firmly clamp slings of any size and thickness between the cone head and the guide shaft through the cone-shaped structure of the cone head; when it is necessary to release the sling, the cone head can ensure that the locking block disengages from the sling, so that the sling returns to its active state. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional view of a telescopic component.

[0016] Figure 2 A front view of a telescopic component after part of its housing has been removed.

[0017] Figure 3 for Figure 2 A magnified view of part A.

[0018] Figure 4 Decomposition of the three-dimensional structure of a telescopic component Figure 1 .

[0019] Figure 5 Decomposition of the three-dimensional structure of a telescopic component Figure 2 .

[0020] Explanation of reference numerals in the attached drawings: 1. Housing; 1a. Winding shaft; 1a1. Positioning groove; 1b. Guide shaft; 1b1. Limiting baffle; 1b2. Pin head; 1c. Locking block; 1c1. Cone head; 1c2. Adjusting screw; 1c3. Rotary cap; 1d. Threaded hole; 1e. Fixing sleeve; 1f. Support ring; 1g. Connecting bracket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 5 : A telescopic assembly includes a housing 1, in which a winding shaft 1a for winding a sling is rotatably mounted, and a plurality of guide shafts 1b for horizontally guiding the sling. A horizontal locking block 1c is provided on one side of the housing 1, and the locking block 1c is located above one of the guide shafts 1b. The locking block 1c clamps and fixes the sling between the locking block 1c and the guide shaft 1b.

[0023] The telescopic component in this application allows for the retraction and extension of the sling by rotating the winding shaft 1a within the housing 1, thereby flexibly adjusting the actual usable length of the sling to adapt to the needs of different lifting scenarios. During the retraction and extension process, the sling is horizontally guided by several guide shafts 1b within the housing 1, ensuring a smooth and orderly process. Once the sling length is adjusted to a preset value, a locking block 1c on one side of the housing 1 presses against the downward guide shaft 1b, causing the locking block 1c to clamp and fix the sling between them, thus locking the sling length. Lifting operations can then commence. In this embodiment, the winding shaft 1a can be driven by a motor or manually rotated and locked using the locking structure; further details are omitted here. This embodiment achieves flexible adjustment of the sling length through the retraction and extension function of the winding shaft 1a. The housing 1 provides protection and constraint for both ends of the sling, the guide shafts 1b guide and limit the sling, and the locking block 1c fixes the sling position, effectively preventing uncontrolled ends of the sling and reducing the safety risks of lifting operations.

[0024] To enable locking and releasing of the sling by locking block 1c, the following features are specifically configured: The locking block 1c has a tapered head 1c1 with a gradually decreasing taper at one end facing the inside of the housing 1. An adjusting screw 1c2 is coaxially mounted on the locking block 1c relative to the tapered head 1c1 at one end. The adjusting screw 1c2 is screwed into a threaded hole 1d on one side of the housing 1.

[0025] like Figure 3 As shown, in this embodiment, when it is necessary to lock the sling, the adjusting screw 1c2 is rotated, which drives the locking block 1c to move inside the housing 1 until the cone head 1c1 of the locking block 1c contacts the sling below and continuously presses against the guide shaft 1b. The cone-shaped structure of the cone head 1c1 can firmly clamp the sling of any size and thickness between the cone head 1c1 and the guide shaft 1b. When it is necessary to release the sling, the adjusting screw 1c2 is rotated in the opposite direction, which drives the locking block 1c away from the guide shaft 1b. The cone head 1c1 can ensure that the locking block 1c2 is disengaged from the sling, so that the sling returns to its active state.

[0026] like Figure 3 As shown, the following features are specifically designed to facilitate the rotation of the adjusting screw 1c2: A nut 1c3 is coaxially mounted on one end of the adjusting screw 1c2 located outside the housing 1.

[0027] like Figure 4 and Figure 5 As shown, in order to ensure that the locking block 1c can contact the limiting baffle 1b1 on the guide shaft 1b during translation, the following features are specifically provided: Two limiting baffles 1b1 are coaxially arranged on the guide shaft 1b, and the distance between the limiting baffles 1b1 is the same as the width of the sling.

[0028] In this embodiment, the distance between the two limiting baffles 1b1 matches the width of the sling, which can accurately limit the sling laterally, preventing lateral displacement of the sling during guiding, locking, and hoisting. This ensures that the cone head 1c1 can accurately contact and squeeze the sling when the locking block 1c moves, improving the accuracy and reliability of the locking action. In order to fix the position of the guide shaft 1b within the housing 1 and restrict its rotation to ensure its clamping force on the sling, the following features are specifically provided: The guide shaft 1b has pins 1b2 at both ends of its axis. The guide shaft 1b is inserted into the fixing sleeve 1e in the housing 1 through the pins 1b2 at both ends. The cross-sectional shape of the pins 1b2 and the fixing sleeve 1e along the radial direction of the guide shaft 1b is rectangular.

[0029] like Figure 4 and Figure 5As shown, in this embodiment, the pins 1b2 at both ends of the guide shaft 1b are aligned with the pre-set fixing sleeves 1e inside the housing 1 and inserted axially to complete the assembly. The pins 1b2 and the rectangular cross-section of the fixing sleeves 1e cooperate to achieve precise restriction of the circumferential rotation of the guide shaft 1b, preventing the guide shaft 1b from rotating due to the force of the sling or the cone head 1c1 when locking, ensuring that the clamping surface always remains stably fitted, and significantly improving the clamping force and locking reliability of the sling.

[0030] To improve the ability of the winding shaft 1a to withstand tensile forces during hoisting, the following features are specifically designed: The housing 1 has positioning grooves 1a1 coaxially arranged at both ends, and a support ring 1f matching the positioning grooves 1a1 is provided inside the housing 1. The support ring 1f is inserted into the positioning grooves 1a1 at both ends of the housing 1.

[0031] like Figure 5 As shown, in this embodiment, when the winding shaft 1a is assembled, the support ring 1f is aligned with the positioning groove 1a1 coaxially provided at both ends of the housing 1, and inserted into the positioning groove 1a1 along the axial direction to complete the fixation. The precise cooperation between the support ring 1f and the positioning groove 1a1 forms bidirectional axial support for the winding shaft 1a from both ends of the housing 1, effectively dispersing the lifting tension borne by the winding shaft 1a, avoiding local stress concentration that could cause deformation or breakage of the winding shaft 1a, and improving the tensile strength of the winding shaft 1a.

[0032] To facilitate connection to the crane, the following features are specifically designed: Connecting brackets 1g for connecting the crane are fixedly installed on both sides of the outer shell 1.

[0033] A flexible sling includes a telescopic component installed at both ends.

[0034] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A telescopic component, characterized in that, The device includes a housing (1), in which a winding shaft (1a) for winding a sling is rotatably mounted, and several guide shafts (1b) for guiding the sling in a horizontal direction. A horizontal locking block (1c) is provided on one side of the housing (1), and the locking block (1c) is located above one of the guide shafts (1b). The locking block (1c) clamps and fixes the sling between the locking block (1c) and the guide shaft (1b).

2. A telescopic component according to claim 1, characterized in that, The locking block (1c) has a tapered head (1c1) with a gradually decreasing taper at one end facing the inside of the housing (1). An adjusting screw (1c2) is coaxially mounted on one end of the locking block (1c) relative to the tapered head (1c1). The adjusting screw (1c2) is screwed into a threaded hole (1d) on one side of the housing (1).

3. A telescopic component according to claim 2, characterized in that, The adjusting screw (1c2) is coaxially provided with a nut (1c3) at one end outside the housing (1).

4. A telescopic component according to claim 1, characterized in that, Two limiting baffles (1b1) are coaxially arranged on the guide shaft (1b), and the distance between the limiting baffles (1b1) is the same as the width of the sling.

5. A telescopic component according to claim 1, characterized in that, The guide shaft (1b) has pins (1b2) at both ends of its axis. The guide shaft (1b) is inserted into the fixing sleeve (1e) provided in the housing (1) through the pins (1b2) at both ends. The cross-sectional shape of the pins (1b2) and the fixing sleeve (1e) along the radial direction of the guide shaft (1b) is rectangular.

6. A telescopic component according to claim 1, characterized in that, The housing (1) has a positioning groove (1a1) coaxially arranged at both ends. The housing (1) has a support ring (1f) that matches the positioning groove (1a1) and is inserted into the positioning groove (1a1) at both ends of the housing (1).

7. A telescopic component according to claim 1, characterized in that, The outer sides of the housing (1) are fixedly installed with connecting brackets (1g) for connecting the crane.

8. A flexible sling, characterized in that, Includes a telescopic assembly as described in claim 1, installed at both ends.

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