Hinge linkage clamping hoisting tool

Abstract

The utility model discloses a hinge linkage clamping hoisting tool, and belongs to the technical field of engine assembly. The upper ends of the lower connecting rods are hinged to the corresponding ends of the middle shaft rods in a limiting mode, the two ends of the middle shaft rods are hinged to the lower ends of the upper connecting rods in a limiting mode, and the upper ends of the upper connecting rods are hinged to the corresponding ends of the upper shaft rods in a limiting mode. A positioning block is arranged on the opposite surface of the clamping plate; wherein one lower connecting rod is fixed to the two ends of an L-shaped locking rod, a locking pin is connected to the corner of the locking rod in an inserted mode, and the locking pin is correspondingly connected with the other lower connecting rod in an inserted mode. According to the utility model, the irregular surface of the workpiece is self-adapted through the hinge linkage design, the workpiece is accurately clamped in a four-point positioning mode, and stable clamping is realized by utilizing the dead weight of the workpiece, so that the workpiece is kept horizontal or at a required angle in the hoisting process; the problems that when an existing hoisting tool hoists irregular-shaped workpieces, clamping and fixing are difficult, the workpieces are not stable, and machining faces are prone to being damaged are solved.

Description

Technical Field

[0001] This utility model relates to a hinge-linked clamping and hoisting tool, belonging to the field of engine assembly technology. Background Technology

[0002] In the field of mechanical engineering, hinges, as devices that connect two or more solid parts, allowing these parts to rotate about a common axis, are the basis for constructing various rotary joints.

[0003] Furthermore, hinge linkage is a system that connects multiple components through hinges (or joints) to form a system capable of coordinated movement. This design not only enables relative rotation or oscillation between components, but also ensures the continuity and functionality of the entire system. It is widely used to realize the transmission of force and motion, as well as to complete complex motion trajectories.

[0004] However, during engine assembly and adjustment, manual handling of some heavy parts proves inadequate, making pneumatic or electric lifting machinery indispensable tools. But in practice, some parts have irregular surface shapes, making conventional hook clamping methods unsuitable.

[0005] Taking engine cylinder blocks as an example, during the assembly process, the cylinder blocks need to be moved using a hoist. However, the unmachined surfaces of the cylinder block have irregular shapes, which means that when using conventional hooks, they can only be hung on the through holes or spindle holes on the outside of the cylinder block for fixation and lifting. Although this method can lift the cylinder block, it cannot maintain a horizontal position during the process. When placing the cylinder block on a tray with multiple fixed points, it is necessary to first align it with one point and then slowly lower it to align with the other fixed points. This operation method is not only inefficient, but also, because the first positioning point is often placed at an angle, it is easy to cause wear or cracks in the machined holes of the cylinder block, thus causing serious quality problems. In addition, each cylinder block requires a long time to align with the fixed points before going online, further limiting the improvement of production efficiency.

[0006] Therefore, to address the aforementioned issues, it is necessary to develop a new type of lifting tool to meet the lifting requirements of irregularly shaped parts, ensure the stability and safety of parts during the lifting process, and improve production efficiency. Utility Model Content

[0007] To address the problems existing in the background technology, this utility model provides a hinge linkage clamping and hoisting tool.

[0008] To achieve the above objectives, this utility model adopts the following technical solution: a hinged linkage clamping and lifting tool, comprising an upper shaft, a middle shaft, a lower shaft, a clamping plate, a lower connecting rod, an upper connecting rod, a locking rod, and a locking pin; the left and right ends of the lower shaft are respectively hinged to the intersections of two corresponding intersecting lower connecting rods via limiting components; the upper end of each lower connecting rod is respectively hinged to the corresponding end of the middle shaft via limiting components; and the left and right ends of each middle shaft are respectively hinged to the lower ends of the corresponding upper connecting rod via... The limiting assembly provides a limiting hinge, with the upper end of each upper connecting rod being respectively limited and hinged to the corresponding end of the upper shaft rod via the limiting assembly; the lower end of each lower connecting rod is respectively fixedly connected to the corresponding end of the corresponding clamping plate, and four positioning blocks are fixedly fixed to the opposite surfaces of the two clamping plates; one of the two lower connecting rods at one end is fixedly connected to both ends of an L-shaped locking rod, and a locking pin is slidably inserted into the corner of the locking rod, and the locking pin is correspondingly inserted into the other of the two lower connecting rods at one end.

[0009] A spring is fitted on the outer side of the locking pin, and an outer shell is fitted on the outer side of the spring. The outer shell is fixedly connected to the locking rod. One end of the spring abuts against the locking rod, and the other end of the spring abuts against the inner end wall of the outer shell. The outer wall of the outer shell is provided with a slot along the movement direction of the locking pin, and the outer wall of the locking pin is provided with a plug, which is inserted into the slot.

[0010] Each of the upper shafts is provided with a lifting ring at its upper end.

[0011] Each of the positioning blocks has a collision-resistant block fixed to its lower end.

[0012] The limiting assembly includes shaft positioning bolts and set screws. The shaft positioning bolts pass through the corresponding connecting rods in sequence and are inserted into the corresponding shafts, and are limited and connected to the corresponding shafts through the corresponding set screws.

[0013] Each of the clamps has a handle fixed to its upper end.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through a hinged linkage design, can autonomously adapt to irregular workpiece surfaces. It precisely clamps the workpiece using a four-point positioning method, utilizing the workpiece's own weight for stable clamping. This ensures the workpiece remains horizontal or at the required angle during lifting, solving problems such as clamping and fixing difficulties, workpiece instability, and easy damage to machined surfaces faced by existing lifting tools when lifting irregularly shaped workpieces. It improves the flexibility and stability of lifting operations, avoids workpiece damage, increases production efficiency, and meets the lifting needs of diverse parts. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 The main view;

[0018] Figure 3 This is a schematic diagram showing the connection between the locking rod and the locking pin. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0020] A hinged linkage clamping lifting tool is suitable for lifting heavy or large components with irregular surfaces during engine assembly. It includes an upper shaft 1, a middle shaft 2, a lower shaft 3, a clamping plate 5, a lower connecting rod 6, an upper connecting rod 7, a locking rod 8, and a locking pin 9. The left and right ends of the lower shaft 3 are respectively hinged to the intersections of two corresponding intersecting lower connecting rods 6 via limiting components. The upper end of each lower connecting rod 6 is respectively hinged to the corresponding end of the middle shaft 2 via limiting components. The left and right ends of each middle shaft 2 are also respectively hinged to the lower ends of the corresponding upper connecting rods 7 via limiting components. The upper end of each upper connecting rod 7... The ends are respectively limited and hinged to the corresponding ends of the upper shaft rod 1 through limiting components; the lower end of each lower connecting rod 6 is fixedly connected to the corresponding end of the corresponding clamping plate 5, and four positioning blocks 14 are fixedly fixed on the opposite surfaces of the two clamping plates 5 one by one; one of the two lower connecting rods 6 at one end is fixedly connected to both ends of the L-shaped locking rod 8 by bolts, and a locking pin 9 is slidably inserted into the corner of the locking rod 8, and the locking pin 9 is correspondingly inserted into the other lower connecting rod 6 at one end.

[0021] A spring 13 is fitted on the outer side of the locking pin 9, and a housing 16 is fitted on the outer side of the spring 13. The housing 16 is fixedly connected to the locking rod 8. One end of the spring 13 abuts against the locking rod 8, and the other end of the spring 13 abuts against the inner end wall of the housing 16. The outer wall of the housing 16 is provided with a slot along the movement direction of the locking pin 9, and the outer wall of the locking pin 9 is provided with a plug, which is inserted into the slot.

[0022] Each of the upper shafts 1 is provided with a lifting ring 10 at its upper end. The lifting ring 10 is used to connect with a hook. After passing through the upper shaft 1, the lifting ring 10 is fixed with an internal hex bolt, which facilitates disassembly and adjustment and improves the flexibility of use.

[0023] Each of the positioning blocks 14 has a collision protection block 11 fixed at its lower end.

[0024] The limiting assembly includes a shaft positioning bolt 4 and a set screw 12. The shaft positioning bolt 4 passes through the corresponding connecting rods in sequence and is inserted into the corresponding shafts. It is limited and connected to the corresponding shafts through the set screws 12, ensuring that the connecting rods can rotate freely and enhancing the adaptability of this utility model to workpieces of different shapes.

[0025] Each clamping plate 5 has a handle 15 fixed to its upper end. The clamping plate 5, the corresponding lower connecting rod 6, and the handle 15 are integrally welded together.

[0026] During production, the length of clamping plate 5 is determined by measuring the difference between the outermost and innermost dimensions of the upper surface, using the upper surface of the cylinder as a reference. The position and size of the positioning block 14 are measured based on the non-machined surface of the workpiece edge, and it is the lifting clamping position that directly contacts the workpiece. This allows the clamping plate to accurately fit and firmly hold the irregularly shaped workpiece surface, thereby achieving reliable lifting clamping.

[0027] When there is no upward pulling force, the angle of the two clamps 5 is at its maximum. When in use, connect the present invention to the lifting tool, operate the present invention with one hand, and control the lifting equipment with the other hand.

[0028] Adjust the opening of the two clamping plates 5 to be larger than the cylinder body to be lifted. After the positioning block 14 on one side is locked at the positioning point on the edge of the cylinder body, slowly release the handle 15 and at the same time control the lifting equipment to rise. At this time, the other clamping plate 5 is aligned with the positioning point of the cylinder body on the other side. Due to gravity, the opening of the two clamping plates 5 of the lifting tool will gradually decrease until it locks the four positioning points of the cylinder body and then stops.

[0029] Pulling the φ3 locking pin 9 with one hand and rotating it causes the insert block to be inserted into the slot. The spring 13 drives the locking pin 9 to be inserted into the corresponding lower connecting rod 6, limiting the relative position between the two lower connecting rods 6 and keeping the two clamping plates 5 at the current angle. At this time, the lifting tool will not open, and the entire mechanism remains in a fixed locked state, preventing accidental loosening or opening of the lifting tool when lifting heavy objects and causing it to fall, thus ensuring the stability of the workpiece clamping and transfer process.

[0030] Then, with the other hand, control the lifting equipment to raise and transport the hoisted workpiece to the designated position. After the workpiece is placed stably, pull out the locking pin until the insert block separates from the slot, and rotate the locking pin 9 to limit the insert block to the end face of the outer shell, so that the locking pin 9 separates from the corresponding lower connecting rod 6, releasing the locking state. Then, make the opening of the two clamping plates 5 larger than the cylinder body to be hoisted, and release the workpiece. Finally, control the lifting equipment to rise until the hoisting tool leaves the cylinder body to be hoisted, and one work cycle ends.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hinged linkage clamping and lifting tool, characterized in that: It includes an upper shaft (1), a middle shaft (2), a lower shaft (3), a clamping plate (5), a lower connecting rod (6), an upper connecting rod (7), a locking rod (8), and a locking pin (9); the left and right ends of the lower shaft (3) are respectively connected to the intersection of two corresponding intersecting lower connecting rods (6) by limiting components, the upper end of each lower connecting rod (6) is respectively connected to the corresponding end of the middle shaft (2) by limiting components, the left and right ends of each middle shaft (2) are also respectively connected to the lower end of the corresponding upper connecting rod (7) by limiting components, and each upper connecting rod (6) is respectively connected to the lower end of the corresponding upper connecting rod (7) by limiting components. 7) The upper end is respectively limited and hinged to the corresponding end of the upper shaft (1) through the limiting component; the lower end of each lower connecting rod (6) is respectively fixedly connected to the corresponding end of the corresponding clamp (5), and four positioning blocks (14) are fixedly fixed on the opposite surfaces of the two clamps (5); one of the two lower connecting rods (6) at one end is fixedly connected to both ends of the L-shaped locking rod (8), and a locking pin (9) is slidably inserted into the corner of the locking rod (8), and the locking pin (9) is correspondingly inserted into the other lower connecting rod (6) at one end.

2. The hinged linkage clamping and lifting tool according to claim 1, characterized in that: A spring (13) is fitted on the outside of the locking pin (9), and a housing (16) is fitted on the outside of the spring (13). The housing (16) is fixedly connected to the locking rod (8). One end of the spring (13) abuts against the locking rod (8), and the other end of the spring (13) abuts against the inner end wall of the housing (16). The outer wall of the housing (16) is provided with a slot along the movement direction of the locking pin (9), and the outer wall of the locking pin (9) is provided with a plug, which is inserted into the slot.

3. The hinged linkage clamping and lifting tool according to claim 1, characterized in that: Each of the upper shafts (1) is provided with a lifting ring (10) at its upper end.

4. The hinged linkage clamping and lifting tool according to claim 1, characterized in that: Each of the positioning blocks (14) has a collision protection block (11) fixed at its lower end.

5. The hinged linkage clamping and lifting tool according to claim 1, characterized in that: The limiting assembly includes a shaft positioning bolt (4) and a set screw (12). The shaft positioning bolt (4) passes through the corresponding connecting rods in sequence and is inserted into the corresponding shafts. It is then limited and connected to the corresponding shafts through the set screws (12).

6. A hinged linkage clamping and lifting tool according to claim 1 or 5, characterized in that: Each of the clamps (5) has a handle (15) fixed to its upper end.

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