Lifting steel material taking machine for heavy material conveying

Abstract

The utility model relates to the technical field of steel conveying, and particularly relates to a lifting steel taking machine for heavy object conveying, which comprises a plug rod, which is used for being inserted into one side port of a pipe fitting, and the longitudinal section size of the plug rod is smaller than the longitudinal section size of the pipe fitting; a connecting sleeve is slidably sleeved on the plug rod, a pressing plate is fixed to the top side of the connecting sleeve, and the pressing plate extends towards the center of the pipe fitting, the pressing plate is used for being pressed on the top wall of the pipe fitting, then the plug rod is pushed to pass through the connecting sleeve and enter the pipe fitting, the clamping of the top wall of the pipe fitting is completed through the clamping opening formed by the pressing plate and the plug rod, and the excessive inclination of the plug rod in the pipe fitting is avoided, compared with the fixing mode of the plug rod matched with the traditional chain, the stability and the fit degree are improved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of steel conveying technology, specifically to a lifting and retrieving machine for conveying heavy objects. Background Technology

[0002] When transporting bundled steel, a hoisting machine is required for movement. If the bundles are not pre-set with lifting points, they cannot be lifted directly with hooks and need to be used in conjunction with other components, such as insert rods.

[0003] Two high-strength insertion rods (made of alloy structural steel, with a diameter slightly smaller than the inner diameter of the pipe opening) are inserted into the pipe openings at both ends of the bundle (insertion depth ≥30cm). Lifting rings are welded to the outer ends of the insertion rods, and hooks are connected by chains, allowing for simultaneous lifting from both sides.

[0004] When using a single insertion rod for fixing, the insertion rod is prone to tilting inside the pipe fitting. Therefore, the structure of the insertion rod needs to be improved. Utility Model Content

[0005] (I) Technical Issues

[0006] The present invention aims to at least address the issue of the need to enhance stability when using insert rods to connect steel materials in the prior art.

[0007] (II) Technical Content

[0008] This solution provides a lifting and steel-retrieving machine for heavy-duty conveying, achieved through the following specific technical means: including...

[0009] A plunger, used to insert into one end of a pipe fitting;

[0010] A connecting sleeve is slidably mounted on the insert rod. A pressure plate is fixed on the top side of the connecting sleeve. The pressure plate is used to press against the top wall of the pipe fitting, and then push the insert rod through the connecting sleeve into the pipe fitting.

[0011] Preferred technical solution 1: A connecting handle is welded to the end of the insertion rod away from the pipe fitting, and the end of the connecting handle extends forward and upward towards the pressure plate and bends to form a lifting ring. The lifting ring is directly connected to the lifting chain on the hoisting machine, or hooked to the hook at the end of the chain.

[0012] Preferred technical solution 2: A top frame is fixed on the top of the connecting sleeve, and the pressure plate is no longer directly fixed to the connecting sleeve, but is instead movably connected to the top frame.

[0013] Preferred technical solution 3: An elastic element is connected between the pressure plate and the top frame.

[0014] Preferred technical solution four: A screw is also installed in the threaded hole opened on the top frame, and the bottom end of the screw extends out of the top frame and contacts the top wall of the pressure plate.

[0015] (III) Technical Effects

[0016] The above structure gives this solution the following advantages:

[0017] The combination of the insert rod, connecting sleeve, and pressure plate forms a unique clamping structure. Compared with the traditional chain-assisted insertion rod fixing method, the stability and fit are improved, providing a new solution for pipe handling in heavy object transportation. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this solution;

[0020] Figure 2 This is a diagram showing the longitudinal section of the pipe fitting and its fit with the insertion rod in this design.

[0021] Figure 3 This is a structural diagram of the pressure plate and top frame in this scheme;

[0022] Figure 4 This is a schematic diagram of the connecting sleeve in this solution.

[0023] Among them, 1. Insert rod, 11. Track groove, 2. Connecting sleeve, 21. Limiting block, 3. Top frame, 4. Elastic element, 5. Screw, 51. Handwheel, 6. Pressure plate, 7. Connecting handle, 71. Lifting ring, 8. Chain. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-3 A steel lifting and retrieving machine for heavy-duty conveying, achieved by the following specific technical means: including...

[0026] Insert rod 1 is used to insert into one side port of the pipe fitting. The longitudinal cross-sectional dimension of insert rod 1 is smaller than that of the pipe fitting. It is recommended to use high-strength alloy steel, such as 40Cr, to ensure sufficient strength and toughness when inserting into the pipe fitting and bearing the weight of the hoisting, so as to prevent deformation or breakage.

[0027] The connecting sleeve 2 is slidably sleeved on the insert rod 1. A pressure plate 6 is fixed on the top side of the connecting sleeve 2 and extends towards the center of the pipe fitting. The pressure plate 6 is used to press on the top wall of the pipe fitting, and then push the insert rod 1 through the connecting sleeve 2 into the pipe fitting. The clamping of the top wall of the pipe fitting is completed by the clamping joint formed by the pressure plate 6 and the insert rod 1, so as to prevent the insert rod 1 from tilting excessively inside the pipe fitting.

[0028] A connecting handle 7 is welded to the end of the insertion rod 1 away from the pipe fitting. The end of the connecting handle 7 extends forward and upward towards the pressure plate 6 and bends to form a lifting ring 71. The lifting ring 71 is directly connected to the lifting chain 8 on the hoisting hoist or hooked to the hook at the end of the chain 8. Unlike the traditional method of directly connecting the hook to the steel, the structural design of the connecting handle 7 uses the horizontal component of the chain 8 to keep the insertion rod 1 inside the pipe fitting. This not only simplifies the connection process but also increases the stability during hoisting. While ensuring the lifting function, it cleverly solves the problem of the insertion rod 1 tilting inside the pipe fitting.

[0029] The connection handle 7 is designed to facilitate connection with the hoisting machine and also to allow workers to easily adjust the position of the insertion rod 1.

[0030] In one set of embodiments

[0031] Please see Figure 3 , Figure 4 A track groove 11 is formed on the insertion rod 1 along the length direction. At the same time, a limiting block 21 is fixed on the inner wall of the connecting sleeve 2, which extends into the track groove 11 and can slide along the track groove 11. This is used to limit the connection state between the insertion rod 1 and the connecting sleeve 2, maintain the lateral sliding of the insertion rod 1, avoid the possible separation of the two during operation, and improve the reliability of equipment operation.

[0032] The connecting sleeve 2 is made of medium carbon steel, such as Q235, and is machined to ensure a smooth inner wall, which fits well with the limit block 21 and ensures smooth sliding.

[0033] In one set of embodiments

[0034] Please see Figure 1 , Figure 2 , Figure 3 To avoid the problem of poor clamping fit caused by fixed clamps, the fixed clamps were changed to movable clamps, thus better adapting to pipe fittings of different diameters. Specifically:

[0035] A top frame 3 is fixed to the top of the connecting sleeve 2. The top frame 3 is located above the pressure plate 6 and below the lifting ring 71. The pressure plate 6 is no longer directly fixed to the connecting sleeve 2, but is instead movably connected to the top frame 3. The distance between the pressure plate 6 and the top frame 3 is adjustable. An elastic element 4, such as an elastic telescopic rod (the elastic telescopic rod can be made of spring steel, with a high-strength stainless steel tube as a protective sleeve, which ensures elastic performance and prevents rusting in harsh working environments, thus affecting the elastic effect. The spring coefficient should be reasonably selected according to the weight and diameter range of common pipe fittings to ensure that appropriate clamping force can be provided under different working conditions), is used to realize the elastic connection between the two. When the insertion rod 1 is inserted into the pipe fitting, the pressure plate 6 closes under the push of the elastic element 4, so that the pressure plate 6 and the insertion rod 1 are respectively flat against the inner and outer sides of the top wall of the pipe fitting.

[0036] To avoid the problem of unstable clamping force caused by the simple setting of elastic element 4, a screw 5 is also installed in the threaded hole opened on the top frame 3. A handwheel 51 is installed at the top of the screw 5, and the bottom end of the screw 5 extends out from the top frame 3 and contacts the top wall of the pressure plate 6. By rotating the screw 5, the pressure plate 6 can be pressed tightly onto the pipe, locking the closed clamp, thus providing sufficient safety and stability when lifting bundled heavy objects.

[0037] Since the handwheel 51 is located below the lifting ring 71, the rotation of the handwheel 51 can be avoided by the connecting handle 7; the screw 5 can be rotated to lock the clamp after the initial elastic clamping is completed; the length of the bottom of the screw 5 can also be adjusted in advance according to the pipe wall thickness to limit the amount of retraction of the elastic element 4, so that the clamping opening after the limit is equal to the pipe wall thickness.

[0038] In one set of embodiments

[0039] The pressure plate 6 and the insertion rod 1 are designed according to the type of pipe fitting. For example, when it is a square pipe, the opposite sides of the pressure plate 6 and the insertion rod 1 are both straight surfaces; when it is a round pipe, the opposite sides of the pressure plate 6 and the insertion rod 1 are both curved surfaces to ensure that the curvature matches the diameter of common round pipes and improve the clamping effect.

[0040] During use, this solution requires daily maintenance of each component according to the established maintenance plan to ensure its working condition.

[0041] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0042] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting steel-lifting machine for conveying heavy objects, comprising an insertion rod (1) for inserting into one side port of a pipe fitting, characterized in that: It also includes a connecting sleeve (2), which is slidably sleeved on the insert rod (1). A pressure plate (6) is fixed on the top side of the connecting sleeve (2), and the pressure plate (6) extends toward the center of the pipe fitting. The pressure plate (6) is used to press against the top wall of the pipe fitting. The clamp formed by the pressure plate (6) and the insert rod (1) completes the clamping of the top wall of the pipe fitting.

2. The lifting steel-retrieving machine for heavy object conveying according to claim 1, characterized in that: A connecting handle (7) is fixed on the insert rod (1), and the connecting handle (7) extends forward and upward toward the pressure plate (6) and forms a lifting ring (71) at the top. The lifting ring (71) is directly connected to the lifting chain (8) on the hoisting machine, or connected to the hook at the end of the chain (8).

3. The lifting steel-retrieving machine for heavy object conveying according to claim 1, characterized in that: A track groove (11) is formed along the length direction on the insertion rod (1), and a limiting block (21) is fixed on the inner wall of the connecting sleeve (2) to extend into the track groove (11) and slide along the track groove (11) to limit the sliding stroke.

4. A lifting steel-retrieving machine for heavy object conveying according to claim 2, characterized in that: A top bracket (3) is fixed on the top of the connecting sleeve (2). The top bracket (3) is located above the pressure plate (6) and below the lifting ring (71). The pressure plate (6) is changed to be movably connected to the top frame (3).

5. A lifting steel-retrieving machine for conveying heavy objects according to claim 4, characterized in that: An elastic element (4) is connected between the pressure plate (6) and the top frame (3).

6. A lifting steel-retrieving machine for conveying heavy objects according to claim 5, characterized in that: A screw (5) is installed in the threaded hole opened on the top frame (3), and the bottom end of the screw (5) extends out from the top frame (3) and contacts the top wall of the pressure plate (6).

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