Self-locking lifting appliance with adjustable size
By designing an adjustable-size self-locking spreader and using a combination of a central tube and a sleeve, the problems of unstable self-locking and narrow applicability of the spreader are solved, enabling rapid locking and unlocking and ensuring the stability and applicability of the lifting operation.
Patent Information
- Application Number
- CN202520772386.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-04-23
AI Technical Summary
Existing lifting tools lack a quick and stable self-locking structure, resulting in unstable lifting and a narrow range of applications. They cannot quickly return to their initial position and are difficult to lift irregularly shaped materials of different sizes.
An adjustable-size self-locking lifting device was designed, comprising a central tube, a sleeve, a folding linkage mechanism, and a self-locking mechanism. Through the cooperation between the sleeve and the central tube, the lifting device can be quickly locked and unlocked, adapting to the lifting of materials of different sizes.
It enables quick locking and unlocking of the spreader, ensuring lifting stability and safety, and expands the application range of the spreader to be suitable for lifting materials of various sizes.
Smart Images
Figure CN223722584U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lifting appliance, in particular to a self-locking lifting appliance with adjustable size. BACKGROUND
[0002] Under the prior art, for some special-shaped materials, especially the hoisting of vehicle cross beams or box beams with inner grooves, an inner supporting lifting appliance is generally used, which tightens the inner cavity wall surface through an internal expansion mechanism and realizes the stable lifting of load by using friction or mechanical engagement.
[0003] The existing inner supporting lifting appliance generally has the following problems:
[0004] The lifting appliance does not have a quick and stable self-locking structure, resulting in an unstable hoisting process, and after hoisting is completed, the initial position cannot be quickly restored.
[0005] The application range of the lifting appliance is narrow, and it can only be used for hoisting materials of a certain size. SUMMARY
[0006] In order to solve the problems of the prior art, the utility model provides a self-locking lifting appliance with adjustable size, which can not only realize the hoisting of various size cross beams and box beams, but also has a self-locking structure, is safe and stable, and is quick and convenient to use.
[0007] The technical scheme adopted by the utility model is as follows:
[0008] A self-locking lifting appliance with adjustable size, comprising a center circular tube, a sleeve is slidably arranged on the outer side of the upper part of the center circular tube, the lower end of the center circular tube is connected to an inverted T-shaped frame, the top of the sleeve is connected to a lifting ring, the sleeve is connected to a left horizontal rod and a right horizontal rod through a folding linkage mechanism, the left horizontal rod and the right horizontal rod slide left and right inside the inverted T-shaped frame, the left inner supporting plate and the right inner supporting plate are movably connected below the left horizontal rod and the right horizontal rod respectively, and a self-locking mechanism is arranged between the sleeve and the center circular tube.
[0009] Preferably, the folding linkage mechanism comprises first left and right connecting rods which are hingedly connected to the two sides of the sleeve at the upper end, the lower end of the first left and right connecting rods is hingedly connected to second left and right folding rods respectively, the lower part of the second left and right folding rods is connected through a connecting rod shaft, the connecting rod shaft slides in the groove of the vertical part of the inverted T-shaped frame, and the lower end of the second left and right folding rods is hingedly connected to one end of the left horizontal rod and the right horizontal rod respectively.
[0010] Preferably, a plurality of pin holes are arranged on the left horizontal rod and the right horizontal rod respectively, and the top of the left inner supporting plate and the right inner supporting plate is inserted into the pin holes through a pin.
[0011] Preferably, the self-locking mechanism comprises a hook fixed on the sleeve and a barbed round table fixed on the lower part of the center pipe, the center pipe below the barbed round table is sleeved with a dished ring, and the upper part of the dished ring is matched and clamped with the inner surface of the barbed round table.
[0012] Preferably, the upper part of the inverted T-shaped frame is provided with a handle.
[0013] Preferably, the left and right inner support plates are symmetrical Z-shaped plates.
[0014] The technical scheme provided by the utility model has the beneficial effects that:
[0015] The self-locking mechanism can realize quick locking and unlocking of the lifting tool, provides stable and safe guarantee for hoisting, and is convenient to operate.
[0016] Adjustment of the left and right inner support plates makes the application range wider, and the hoisting of materials of different sizes can be met, and the adjustment mode is simple and easy to operate. DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for the ordinary skilled in the art.
[0018] Figure 1 It is the overall structure perspective drawing of the self-locking lifting tool of adjustable size of the utility model;
[0019] Figure 2 It is the local structure perspective drawing of the self-locking lifting tool of adjustable size of the utility model (remove the inverted T-shaped frame). DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be further described in detail in combination with the drawings. EMBODIMENT
[0021] As shown in the accompanying Figure 1 , 2As shown, the adjustable size self-locking lifting device of the embodiment comprises a center pipe 1, a sleeve 2 sliding on the upper outer side of the center pipe 1, a reverse T-shaped frame 3 connected to the lower end of the center pipe 1, a lifting ring 4 connected to the top of the sleeve 2, the sleeve 2 being connected to a left horizontal rod 5 and a right horizontal rod 6 through a folding linkage mechanism, the left horizontal rod 5 and the right horizontal rod 6 sliding left and right inside the reverse T-shaped frame 3, a left inner support plate 7 and a right inner support plate 8 being movably connected below the left horizontal rod 5 and the right horizontal rod 6 respectively, and a self-locking mechanism being arranged between the sleeve 2 and the center pipe 1.
[0022] The folding linkage mechanism of the embodiment comprises a first left linkage rod 9 and a first right linkage rod 10 hingedly connected to the two sides of the sleeve 2, the first left linkage rod 9 and the first right linkage rod 10 being hingedly connected to a second left folding rod 11 and a second right folding rod 12 at the lower ends thereof respectively, the lower parts of the second left folding rod 11 and the second right folding rod 12 being shaft-connected through a linkage shaft 13, the linkage shaft 13 sliding in a groove 14 of the vertical part of the reverse T-shaped frame 3, and the second left folding rod 11 and the second right folding rod 12 being hingedly connected to one end of the left horizontal rod 5 and the right horizontal rod 6 respectively at the lower ends thereof.
[0023] A plurality of pin holes 15 are arranged on the left horizontal rod 5 and the right horizontal rod 6 respectively, and the top of the left inner support plate 7 and the right inner support plate 8 is inserted into the pin holes through a pin.
[0024] The self-locking mechanism of the embodiment comprises a hook 16 fixed to the sleeve 2 and a reverse hook circular table 17 fixed to the lower part of the center pipe 1, the center pipe 1 below the reverse hook circular table 17 being slidingly sleeved with a disc ring 18, and the upper part of the disc ring 18 being clamped and fitted with the inner surface of the reverse hook circular table 17.
[0025] A handle 19 is arranged on the upper part of the reverse T-shaped frame. The left inner support plate 7 and the right inner support plate 8 are symmetrical Z-shaped plates, the outer turned lower end edges of which can hook the inner groove of the material, facilitating the fixing of hoisting.
[0026] The working principle of the self-locking mechanism in use is as follows:
[0027] In the initial state, the hook 16 on the sleeve 2 is hooked by the inside of the reverse hook circular table 17, so that the folding linkage mechanism driven by the entire sleeve 2 cannot move upward relative to the center pipe, thereby realizing the locking state.
[0028] When hoisting is needed, the workers pull the whole center pipe 1 and the inverted T-shaped frame 3 to the place where the material to be hoisted is located through the handle 19, and the left inner support plate 7 and the right inner support plate 8 are placed on both sides of the groove of the material, at this time, the sleeve 2 is lowered, the hook 16 is lowered to below the dish-shaped ring 18, the dish-shaped ring 18 is moved to the inverted hook round table 17, the dish-shaped ring 18 is matched and inlaid with the inverted hook round table 17, at this time, the lower surface of the dish-shaped ring 18 cannot realize the inverted hanging of the hook 16, the hook 16 can be easily moved above the inverted hook round table 17, the unlocking is completed, and the opening of the left inner support plate 7 and the right inner support plate 8 is also unlocked, so that the material to be hoisted is supported.
[0029] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An adjustable-size self-locking lifting device, comprising a central circular tube, a sleeve slidingly attached to the outer upper part of the central circular tube, an inverted T-shaped frame connected to the lower end of the central circular tube, and a lifting ring connected to the top of the sleeve, characterized in that, The sleeve is connected with the left and right horizontal rods through a folding linkage mechanism, the left and right horizontal rods slide left and right inside the inverted T-shaped frame, the left and right inner support plates are movably connected with the left and right horizontal rods respectively below the left and right horizontal rods, and a self-locking mechanism is arranged between the sleeve and the center tube.
2. A self-locking sling of adjustable size according to claim 1, characterized in that, The folding linkage mechanism comprises first left and right connecting rods which are hingedly connected at the upper ends of the sleeve, the lower ends of the first left and right connecting rods are hingedly connected with second left and right folding rods respectively, the lower parts of the second left and right folding rods are connected through a connecting rod shaft, the connecting rod shaft slides in a groove of the vertical part of the inverted T-shaped frame, and the lower ends of the second left and right folding rods are hingedly connected with one end of the left and right horizontal rods respectively.
3. A self-locking spreader of variable size according to claim 1, characterized in that, The left and right horizontal rods are respectively provided with a plurality of pin holes, and the top of the left and right inner support plates is inserted into the pin holes through pins.
4. A self-locking sling of adjustable size according to claim 1, characterized in that, The self-locking mechanism comprises a hook fixed on the sleeve and a barbed round table fixed on the lower part of the center tube, the center tube below the barbed round table is slidably sleeved with a disc ring, and the upper part of the disc ring is clamped with the inner surface of the barbed round table.
5. A self-locking sling of adjustable size according to claim 1, characterized in that, The upper part of the inverted T-shaped frame is provided with a handle.
6. A self-locking sling of adjustable size according to claim 1, characterized in that, The left and right inner support plates are symmetrical Z-shaped plates.