Lifting device and concrete pipes

Abstract

Lifting device for concrete pipes, comprising: a first crossbeam (1); a longitudinal beam (2) whose end is perpendicularly connected to an end of the first crossbeam (1); a second crossbeam (3) which is arranged parallel and in the same direction as the first crossbeam (1) and whose one end is connected perpendicularly to the other end of the longitudinal beam (2); a counterweight structure (4) attached to the other end of the first crossbeam (1); a lifting sling structure (5) which is connected to the first crossbeam (1) and the counterweight structure (4) on the side facing away from the second crossbeam (3); characterized in that damping buffers (6) are attached to the side wall of the longitudinal beam (2) near the other end of the first crossbeam (1) and to the side wall of the second crossbeam (3) which faces the first crossbeam (1); a clamping structure (7) for clamping the concrete pipe is attached at the other end of the second crossbeam (3).

Description

Technical area

[0001] The utility model relates to the technical field of lifting for pipes, in particular to a lifting device for concrete pipes. Background technology

[0002] In urban road construction, gravity-fed pipes for rainwater and wastewater are typically planned along both sides of the road. These pipes usually consist of precast concrete sections, with pipe segments that are 2 to 3 meters long. On-site assembly is usually carried out using a crane that lifts the pipes directly with steel cables, which, however, does not guarantee either safety or installation quality. Furthermore, due to their thin walls, especially at the joints between two segments, the pipe segments are very susceptible to damage during the lifting process.

[0003] Furthermore, with conventional lifting devices, the weight of the concrete pipes themselves, their inertia during the lifting process, and design flaws in the lifting device itself often cause the concrete pipes to sway and slip during lifting. In the worst-case scenario, this can lead to them falling, resulting in damage to the concrete pipes, as well as injuries or fatalities. Content of the utility model

[0004] The purpose of this utility model is to solve at least one technical problem of the background technology and to provide a lifting device for concrete pipes.

[0005] To achieve the above purpose, the utility model provides a lifting device for concrete pipes, comprising: a first crossbeam; a longitudinal beam, one end of which is connected perpendicularly to one end of the first crossbeam; a second crossbeam, which is arranged parallel and in the same direction as the first crossbeam and whose one end is connected perpendicularly to the other end of the longitudinal beam; a counterweight structure attached to the other end of the first crossbeam; a lifting loop structure connected to the first crossbeam and the counterweight structure on the side facing away from the second crossbeam; wherein damping buffers are attached to the side wall of the longitudinal beam near the other end of the first crossbeam and to the side wall of the second crossbeam facing the first crossbeam; a clamping structure for clamping the concrete pipe is attached at the other end of the second crossbeam.

[0006] According to one aspect of the present utility model, the length of the second crossbeam is longer than the sum of the lengths of the first crossbeam and the counterweight structure.

[0007] According to one aspect of the present utility model, the second crossbeam has a sloping surface towards the side wall of the first crossbeam, wherein the sloping surface is the lower side on the side facing the longitudinal beam and the higher side on the side away from the longitudinal beam.

[0008] According to one aspect of the present utility model, a central slide is provided in the axis of the second crossbeam, wherein the clamping structure is arranged to be movable back and forth.

[0009] According to one aspect of the present utility model, the clamping structure comprises the following: a mounting end and a clamping end; wherein the assembly end in the central slide is arranged in such a way that it can move back and forth; wherein the clamping element protrudes after exiting the central chute and is connected to the concrete pipe, clamping the concrete pipe in place.

[0010] According to one aspect of the present utility model, the clamping structure comprises a mounting end and a clamping end; wherein the mounting end is rotatably connected to the outer wall of the end of the second crossbeam; wherein the clamping end is firmly connected to the mounting end, wherein the clamping end can be folded around the end of the second cross member by rotating the mounting end.

[0011] According to one solution of the present utility model, a lifting device for concrete pipes comprises a first crossbeam; a longitudinal beam, one end of which is perpendicularly connected to one end of the first crossbeam; a second crossbeam, arranged parallel and in the same direction as the first crossbeam, one end of which is perpendicularly connected to the other end of the longitudinal beam; a counterweight structure attached to the other end of the first crossbeam; a lifting sling structure connected to the first crossbeam and the counterweight structure on the side facing away from the second crossbeam; damping buffers attached to the side wall of the longitudinal beam near the other end of the first crossbeam and to the side wall of the second crossbeam facing the first crossbeam; and a clamping structure for clamping the concrete pipe attached to the other end of the second crossbeam.This arrangement effectively protects the areas of the lifting device that are in contact with, or easily touched by, the concrete pipe. This prevents the concrete pipe from damaging the structure upon rigid contact. Furthermore, the damping buffers increase the frictional force between the lifting device and the concrete pipe, ensuring greater frictional resistance during the lifting process. This prevents the concrete pipe from easily slipping or falling off the second crossbeam. Additionally, the clamping mechanism securely fixes the concrete pipe to the second crossbeam, preventing it from falling off under any circumstances during the lifting and transport process, thus preventing damage and other safety incidents.

[0012] According to one solution of the present utility model, the length of the second crossbeam is longer than the sum of the lengths of the first crossbeam and the counterweight structure. This arrangement allows the center of gravity of the concrete pipes to be kept stable during lifting, thus preventing the risk of slipping or falling towards the free end of the second crossbeam.

[0013] According to one solution of the present utility model, the second crossbeam has a sloping surface facing the side wall of the first crossbeam, with the sloping surface being the lower side on the side facing the longitudinal beam and the higher side on the side furthest from the longitudinal beam. This means that the width of the left free end of the second crossbeam is successively greater than that of the parts behind it and the right end. This arrangement allows the concrete pipe, after being placed on the second crossbeam, to lower at the end facing the longitudinal beam, while the end furthest from the longitudinal beam rises slightly. This ensures that the concrete pipe rests stably and firmly on the second crossbeam and is pressed towards the side of the longitudinal beam, preventing it from slipping or falling off during the lifting process.

[0014] According to one solution of the present utility model, the clamping structure comprises a mounting end and a clamping end; the mounting end being rotatably connected to the outer wall of the end of the second crossbeam; the clamping end being fixedly connected to the mounting end, and the clamping end being able to be folded around the end of the second crossbeam by rotating the mounting end. This arrangement allows the clamping end to be folded onto the top of the end of the second crossbeam, thereby limiting the concrete pipe resting on the second crossbeam. This ensures that the concrete pipe remains on the second crossbeam at all times during lifting and transport operations, with both ends always positioned between the clamping end and the longitudinal beam to prevent slippage and falling.

[0015] According to one solution of the present utility model, the clamping structure comprises the following: a mounting end and a clamping end; the mounting end is either movably arranged in the central chute or fixedly installed in the central chute or at another position; the clamping end projects from the central chute and can be connected to and clamped to the concrete pipe. In this embodiment, the clamping end can consist of a flexible material and a clamping hook. The flexible material is wrapped around the concrete pipe, and then the clamping hook is hooked onto the corresponding counter-structure. This encloses the concrete pipe in the opposite direction to the free end of the second crossbeam, so that the concrete pipe is clamped during lifting and transport. This prevents the concrete pipe from slipping or falling and ensures safety during lifting.

[0016] The solution of this utility model ensures that the concrete pipe does not suffer any strong rigid collisions during lifting that could lead to damage, and at the same time ensures that the support position of the concrete pipe is effectively maintained so that no strong slippage or even falling occurs during the lifting and transport process, thus guaranteeing safety during lifting. Illustration of the attached drawings Fig. Figure 1 schematically shows a structural arrangement of a lifting device for concrete pipes according to an embodiment of the present utility model. Specific embodiments

[0017] The content of this utility model is explained below using exemplary embodiments. It should be understood that the described embodiments serve only to provide those skilled in the field with a better understanding and thus facilitate the implementation of this utility model, without implying any limitations on the scope of protection of the invention.

[0018] As used in this article, the terms "including" and its variants are to be understood as open terms meaning "including, but not limited to." The term "based on" is to be understood as "at least partially based on." The terms "an embodiment" and "an implementation" are to be understood as "at least one embodiment."

[0019] Fig. Figure 1 schematically shows a structural arrangement of a lifting device for concrete pipes according to an embodiment of the present utility model. With reference to Fig. 1 The lifting device for concrete pipes in this embodiment comprises the following: a first crossbeam 1; a longitudinal beam 2, one end of which is connected perpendicularly to one end of the first crossbeam 1; a second crossbeam 3, which is arranged parallel and in the same direction as the first crossbeam 1 and whose one end is connected perpendicularly to the other end of the longitudinal beam 2; a counterweight structure 4, which is attached to the other end of the first crossbeam 1; a lifting sling structure 5, which is connected to the first crossbeam 1 and the counterweight structure 4 on the side facing away from the second crossbeam 3; wherein the damping buffer 6 is attached to the side wall of the longitudinal beam 2 near the other end of the first crossbeam 1 and to the side wall of the second crossbeam 3, which faces the first crossbeam 1; A clamping structure 7 is attached to the other end of the second crossbeam 3 for clamping the concrete pipe 10. This arrangement allows the damping buffers 6 to effectively protect the areas of the lifting device that are in contact with, or easily touched by, the concrete pipe, preventing damage to these structures from the concrete pipe upon rigid contact. Furthermore, the damping buffers 6 increase the frictional force between the lifting device and the concrete pipe, thus ensuring greater frictional resistance during the lifting process and preventing the concrete pipe from easily slipping or falling off the second crossbeam 3.Furthermore, the clamping structure 7 ensures that the concrete pipe is securely fixed to the second crossbeam 3, so that it cannot fall off the second crossbeam 3 under any circumstances during the lifting and transport process, thus preventing damage and other safety incidents.

[0020] Furthermore, as in Fig. In this embodiment, the length of the second crossbeam 3 is longer than the sum of the lengths of the first crossbeam 1 and the counterweight structure 4. This arrangement allows the center of gravity of the concrete pipes to be kept stable during lifting, thus preventing the risk of slipping or falling towards the free end of the second crossbeam 3.

[0021] Furthermore, the second crossbeam 3 points towards the side wall of the first crossbeam 1 (i.e., the upper side wall in Fig. 1) The second crossbeam 3 has a sloping surface, with the sloping surface being the lower side on the side facing the longitudinal beam 2 and the higher side on the side away from the longitudinal beam 2. This means that the width of the left free end of the second crossbeam 3 is greater than that of the parts behind it and the right end. This arrangement allows the concrete pipe to sink downwards at the end facing the longitudinal beam 2 after being placed on the second crossbeam 3, while the end away from the longitudinal beam 2 rises slightly. This ensures that the concrete pipe rests stably and securely on the second crossbeam 3 and is pressed against the longitudinal beam 2, so that it neither slips nor falls off during the lifting process.

[0022] According to one embodiment of the present utility model, as in Fig. 1 the clamping structure 7 a mounting end 8 and a clamping end 9; wherein the mounting end 8 is rotatably connected to the outer wall of the end of the second crossbeam 3; wherein the clamping end 9 is rigidly connected to the mounting end 8, and the clamping end 9 can be folded around the end of the second crossbeam 3 by rotating the mounting end 8. This arrangement allows the clamping end 9 to be folded onto the top of the end of the second crossbeam 3, thereby limiting the concrete pipe resting on the second crossbeam 3. This ensures that the concrete pipe remains on the second crossbeam 3 at all times during the lifting and transport process, with both ends always positioned between the clamping end 9 and the longitudinal beam 2 to prevent slippage and falling.

[0023] Furthermore, according to another embodiment of the present utility model, the clamping structure 7 comprises the following: a mounting end and a clamping end; wherein the assembly end in the central slide is arranged in such a way that it can move back and forth; The clamping element protrudes from the central chute after exiting and is connected to the concrete pipe, clamping it securely. In this embodiment, the clamping element can consist of a flexible material and a clamping hook. The flexible material is wrapped around the concrete pipe, and then the clamping hook is engaged with the corresponding counter-structure. This encloses the concrete pipe in the opposite direction to the free end of the second crossbeam 3, thus clamping the concrete pipe securely during lifting and transport. This prevents the concrete pipe from slipping or falling and ensures safety during lifting.

[0024] Of course, the mounting end can also be permanently installed in the aforementioned central slide, but it can also be permanently installed in other positions, as long as a secure clamping and fastening of the concrete pipe is guaranteed.

[0025] According to the aforementioned design of this utility model, the first and second crossbeams are made of H-section steel with dimensions of 200 x 200 x 8 x 12 mm. 8 mm thick steel plates are welded to both sides of the H-section steel for sealing. The first crossbeam is equipped with a counterweight box (counterweight structure 4) and a varying number of lifting lugs (lifting sling structure 5). Rubber buffers (damping buffers 6) are attached to the second crossbeam to prevent stress concentration at the contact surfaces between the pipeline and the H-section steel, which could lead to pipe damage. Rubber buffers are also attached to the fall arresters to prevent lateral slippage of the pipeline, which could cause crushing or breakage of the concrete pipes.

[0026] According to the above solution of this utility model, it is ensured that the concrete pipe does not suffer any strong rigid collisions during lifting that could lead to damage, and at the same time ensures that the support position of the concrete pipe is effectively maintained so that no strong slippage or even falling occurs during the lifting and transport process, thus guaranteeing safety during lifting.

[0027] Finally, it should be explained that the preferred embodiments mentioned above serve only to illustrate the technical solution of the utility model and are not limiting. Although the above preferred embodiments of this utility model have been described in detail, those skilled in the field should understand that various changes in form and details can be made without departing from the scope of protection defined by the claims of this utility model.

[0028] The present utility model relates to a lifting device for concrete pipes, comprising: a first crossbeam; a longitudinal beam, one end of which is perpendicularly connected to one end of the first crossbeam; a second crossbeam, arranged parallel and in the same direction as the first crossbeam and one end of which is perpendicularly connected to the other end of the longitudinal beam; a counterweight structure attached to the other end of the first crossbeam; a lifting sling structure connected to the first crossbeam and the counterweight structure on the side facing away from the second crossbeam; wherein damping buffers are attached to the side wall of the longitudinal beam near the other end of the first crossbeam and to the side wall of the second crossbeam facing the first crossbeam; wherein a clamping structure for clamping the concrete pipe is attached to the other end of the second crossbeam.This utility model ensures that the concrete pipe does not suffer any strong rigid collisions during lifting that could lead to damage, and at the same time ensures that the support position of the concrete pipe is effectively maintained so that no strong slippage or even falling occurs during the lifting and transport process, thus guaranteeing safety during lifting.

Claims

[1] Lifting device for concrete pipes, comprising: a first crossbeam (1); a longitudinal beam (2) whose end is perpendicularly connected to an end of the first crossbeam (1); a second crossbeam (3) which is arranged parallel and in the same direction as the first crossbeam (1) and whose one end is connected perpendicularly to the other end of the longitudinal beam (2); a counterweight structure (4) attached to the other end of the first crossbeam (1); a lifting sling structure (5) which is connected to the first crossbeam (1) and the counterweight structure (4) on the side facing away from the second crossbeam (3); characterized by , that damping buffers (6) are attached to the side wall of the longitudinal beam (2) near the other end of the first crossbeam (1) and to the side wall of the second crossbeam (3) facing the first crossbeam (1); a clamping structure (7) for clamping the concrete pipe is attached at the other end of the second crossbeam (3). [2] Lifting device for concrete pipes according to claim 1, characterized by , that the length of the second crossbeam (3) is longer than the sum of the lengths of the first crossbeam (1) and the counterweight structure (4). [3] Lifting device for concrete pipes according to claim 1, characterized by , that the second crossbeam (3) has a sloping surface towards the side wall of the first crossbeam (1), wherein the sloping surface is the lower side on the side facing the longitudinal beam (2) and the higher side on the side away from the longitudinal beam (2). [4] Lifting device for concrete pipes according to one of claims 1-3, characterized by , that a central slide is provided in the axis of the second crossbeam (3), wherein the clamping structure (7) is arranged to move back and forth. [5] Lifting device for concrete pipes according to claim 4, characterized by , that the clamping structure (7) comprises: a mounting end and a clamping end; wherein the assembly end in the central slide is arranged in such a way that it can move back and forth; wherein the clamping element protrudes after exiting the central chute and is connected to the concrete pipe, clamping the concrete pipe in place. [6] Lifting device for concrete pipes according to one of claims 1-3, characterized by , that the clamping structure (7) comprises a mounting end (8) and a clamping end (9); wherein the mounting end (8) is rotatably connected to the outer wall of the end of the second crossbeam (3); wherein the clamping end (9) is firmly connected to the mounting end (8), wherein the clamping end (9) can be folded around the end of the second cross member (3) by rotating the mounting end (8).

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