Automatic lifting appliance for high-temperature metal pipe

Abstract

The utility model discloses an automatic lifting appliance for a high-temperature metal pipe, which comprises a clamping unit connected below a load-bearing lifting joint, the clamping unit comprises a claw hook and a connecting rod shaft, the connecting rod shaft is connected with the load-bearing lifting joint, the clamping unit is connected with a distance sensing unit, and the distance sensing unit is connected with the claw hook. The connecting rod shaft is fixedly connected with symmetrical laser emitters, the symmetrical faces of the symmetrical laser emitters are perpendicular to the horizontal plane, the midpoint of the metal pipe clamped on the clamping unit is located on the symmetrical faces, and the emitting direction of the laser emitters is downward. According to the automatic lifting appliance for the high-temperature metal pipe, accurate information of the spatial position of the high-temperature metal pipe in the lifting process is obtained through the distance sensing unit connected to the clamping unit, so that the lifting process is more stable and simpler. The connecting rod shaft of the automatic lifting appliance for the high-temperature metal pipe is fixedly connected with the symmetrical laser transmitters, so that an operator can be assisted in clamping the lifting appliance in the middle of the high-temperature metal pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of metal pipe processing equipment, specifically to an automatic lifting device for high-temperature metal pipes. Background Technology

[0002] During the production of metal pipes, the metal pipes need to be hoisted. Manufacturers usually use lifting tools such as double hooks or long slings for hoisting. However, the loading and unloading process is very inconvenient and requires a lot of manual labor. Moreover, these traditional lifting tools are not suitable for metal pipes under high temperature conditions.

[0003] Chinese utility model patent CN215666612U discloses an automatic lifting device for high-temperature steel pipes, including a lifting plate, a first horizontal shaft, a first hook, a vertical shaft, a second horizontal shaft, a fixed sleeve, a movable sleeve, and a second hook. The lifting plate is fixedly mounted on the first horizontal shaft, and a mounting base is fixedly mounted at the bottom end of the first horizontal shaft. The first hooks are symmetrically mounted on the mounting base and hinged to the mounting base. One end of the vertical shaft is mounted through the mounting base and slidably connected to the mounting base, and the other end is fixedly mounted on the second horizontal shaft. The fixed sleeve is fixedly mounted on the vertical shaft, and the movable sleeve is slidably connected to the vertical shaft and located below the fixed sleeve. Both ends of the first horizontal shaft are hinged to a first connecting rod and a second connecting rod. The other ends of the first connecting rod and the second connecting rod are hinged to a linkage shaft. Both ends of the linkage shaft are hinged to a second hook. The second hooks are arranged crosswise, and the crosswise position is hinged to the second horizontal shaft. During the loading and unloading of steel pipes, the first clamp, which is symmetrically set on the vertical axis, moves between the fixed sleeve and the movable sleeve to automatically clamp the steel pipe. It can clamp steel pipes of different diameters, meaning that no manual intervention is required during use, reducing the safety hazards that may exist during manual operation. The lifting process is very stable. The opening size of the second clamp and the spacing length between the second clamps can also be designed according to the outer diameter of the steel pipe being lifted, making it highly adaptable.

[0004] However, when using a chain hoist to connect the aforementioned high-temperature steel pipe with an automatic lifting device, it is difficult to align the hook of the lifting device with the midpoint of the steel pipe; the steel pipe is prone to swaying when the lifting device lifts and moves, posing a safety risk. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic lifting tool for high-temperature metal pipes that is suitable for chain connection, simple to operate, and stable in lifting status.

[0006] To achieve the above technical effects, the technical solution of this utility model is as follows: an automatic lifting device for high-temperature metal pipes, including a clamping unit connected below a load-bearing lifting joint. The clamping unit includes a hook and a connecting rod shaft. The connecting rod shaft is connected to the load-bearing lifting joint. The clamping unit is connected to a distance sensing unit. The connecting rod shaft is fixedly connected to symmetrical laser emitters. The symmetry plane of the symmetrical laser emitters is perpendicular to the horizontal plane. The midpoint of the metal pipe clamped on the clamping unit is located on the symmetry plane. The emission direction of the laser emitters is downward.

[0007] Preferably, in order to better determine the horizontality of the metal tube held by the clamping unit, a horizontal sensor is fixedly connected to the connecting rod shaft.

[0008] Preferably, in order to reduce the swaying of the metal pipe after it is lifted, the load-bearing lifting joint is provided with load-bearing lifting holes, and the distribution direction of the load-bearing lifting holes is parallel to the axial direction of the metal pipe clamped on the clamping unit.

[0009] Preferably, in order for the clamping unit to accurately grasp the metal tube, the distance sensing unit is fixedly connected to the gripping hook.

[0010] Preferably, in order to control the position of the clamping unit when it falls, the gripping rod is provided with an auxiliary lifting joint, and the auxiliary lifting joint is provided with an auxiliary lifting hole.

[0011] Preferably, in order to improve the safety of the clamping unit, the clamping unit is a self-locking clamping unit.

[0012] Preferably, for the sake of a simple clamping unit structure, the self-locking clamping unit further includes a first gripping rod, a second gripping rod, a gripping rod shaft, a first connecting rod, and a second connecting rod. The first gripping rod and the second gripping rod are X-shaped and hinged to the gripping rod shaft. The top end of the first gripping rod is hinged to the bottom end of the second connecting rod, and the top end of the second gripping rod is hinged to the bottom end of the first connecting rod. The top ends of the first connecting rod and the second connecting rod are hinged to the connecting rod shaft. The gripping hook is disposed at the bottom end of the first gripping rod and the second gripping rod.

[0013] The advantages and beneficial effects of this utility model are as follows:

[0014] This automatic lifting device for high-temperature metal pipes obtains precise spatial position information during the lifting process of high-temperature metal pipes through a distance sensing unit connected to the clamping unit, making the lifting process more stable and simple.

[0015] The high-temperature metal pipe is fixedly connected to a symmetrical laser emitter via the connecting rod shaft of an automatic lifting device, which can assist the operator in using the lifting device to clamp the high-temperature metal pipe in the middle.

[0016] The automatic lifting device for high-temperature metal pipes has a reasonable structure, low failure rate, and smooth operation. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the automatic lifting device for high-temperature metal pipes of this utility model;

[0018] Figure 2 yes Figure 1 Enlarged view of part A;

[0019] Figure 3 yes Figure 1 Enlarged view of part B;

[0020] Figure 4 This is a schematic diagram of part of the process of the grabbing hook grabbing a metal pipe in an embodiment of the automatic lifting device for high-temperature metal pipes of this utility model;

[0021] Figure 5 yes Figure 4 Enlarged view of part C;

[0022] Figure 6 This is a structural schematic diagram from another perspective of an embodiment of the automatic lifting device for high-temperature metal pipes of this utility model;

[0023] In the diagram: 1. Load-bearing lifting joint; 101. Load-bearing lifting hole; 2. Grab hook; 201. Auxiliary lifting joint; 2011. Auxiliary lifting hole; 3. Connecting rod shaft; 4. Distance sensing unit; 5. Laser emitter; 6. Symmetry plane; 7. Horizontal sensor; 8. First grab rod; 9. Second grab rod; 10. Grab rod shaft; 11. First connecting rod; 12. Second connecting rod. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model. Example

[0025] like Figures 1-6As shown, the automatic lifting device for high-temperature metal pipes according to this embodiment of the present invention includes: a clamping unit connected below the load-bearing lifting joint 1, the clamping unit including a hook 2 and a connecting shaft 3, the connecting shaft 3 being connected to the load-bearing lifting joint 1, a distance sensing unit 4 being connected to the clamping unit, and symmetrical laser emitters 5 being fixedly connected to the connecting shaft 3. The symmetry plane 6 of the symmetrical laser emitters 5 is perpendicular to the horizontal plane, the midpoint of the metal pipe clamped on the clamping unit is located on the symmetry plane 6, and the emission direction of the laser emitters 5 is downward. The laser emitters 5 can be optionally rotatably connected to the connecting shaft 3; the load-bearing lifting joint 1 is provided with load-bearing lifting holes 101, the distribution direction of the load-bearing lifting holes 101 being parallel to the axial direction of the metal pipe clamped on the clamping unit. The distance sensing unit 4 is fixedly connected to the hook 2. The hook 2 is provided with an auxiliary lifting joint 201, and the auxiliary lifting joint 201 is provided with an auxiliary lifting hole 2011. Further, the clamping unit is a self-locking clamping unit. Furthermore, the self-locking clamping unit also includes a first gripping rod 8, a second gripping rod 9, a gripping rod shaft 10, a first connecting rod 11, and a second connecting rod 12. The first gripping rod 8 and the second gripping rod 9 are X-shapedly hinged to the gripping rod shaft 10. The top end of the first gripping rod 8 is hinged to the bottom end of the second connecting rod 12, and the top end of the second gripping rod 9 is hinged to the bottom end of the first connecting rod 11. The top ends of the first connecting rod 11 and the second connecting rod 12 are hinged to the connecting rod shaft 3. The gripping hook 2 is located at the bottom end of the first gripping rod 8 and the second gripping rod 9. Furthermore, a level sensor 7 is fixedly connected to the connecting rod shaft 3.

[0026] Specifically, the load-bearing lifting holes 101 provided on the load-bearing lifting joint 1 are used for fixed connection with multiple independent lifting chains. The distribution direction of the load-bearing lifting holes 101 is parallel to the axial direction of the metal pipe clamped on the clamping unit. The number of load-bearing lifting holes 101 is preferably two. By lifting or lowering the multiple independent lifting chains fixedly connected to the load-bearing lifting holes 101, the angle between the metal pipe clamped on the lifting device and the horizontal plane can be adjusted. The clamping unit is used to clamp the high-temperature metal pipe. The hook 2 is the part of the clamping unit that directly contacts the high-temperature metal pipe. The number of hooks 2 is preferably four. The auxiliary lifting holes 2011 are connected to the auxiliary lifting chains. The auxiliary lifting chains are multiple independent lifting chains. The cooperation of lifting or lowering the multiple auxiliary lifting chains can realize the clamping of the clamping unit. The size of the interval changes, i.e., the opening and closing of the hook 2, and the number of auxiliary lifting holes 2011 is preferably 4; the distance sensing unit 3 is used to obtain accurate information on the spatial position of the high-temperature metal pipe during the lifting process, i.e., the distance from the distance sensing unit 3 to the ground. The distance sensing unit 3 can be a laser distance sensor, and its laser emission direction is downward. The information of the distance sensing unit 3 is provided to the operator; when the distance sensing unit 3 is fixedly connected to the hook 2, the operator has a better grasp of the spatial position of the hook 2; the distance sensing unit 3 has poor accuracy when measuring a large distance, i.e., when the lifting device lifts the high-temperature metal pipe to a certain height, the distance sensing unit 3 cannot provide accurate distance information for the operator to adjust the level of the high-temperature metal pipe. A horizontal sensor 5 is fixedly connected to the connecting rod shaft 4. This sensor promptly feeds back the horizontal information of the high-temperature metal pipe to the operator, who then adjusts the independent lifting chain connected to the load-bearing lifting hole 101 to ensure the high-temperature metal pipe is horizontal. The self-locking clamping unit clamps the high-temperature metal pipe using its own self-locking structure, maintaining the clamping state without requiring continuous external force, thus ensuring safety during the lifting process and preventing slippage. The clamping interval between the hooks 2 is as follows: before clamping the high-temperature metal pipe, the independent lifting chain connected to the auxiliary lifting hole 2011 on the hook 2 is raised, causing the hooks 2 to move further apart and increasing the clamping interval. After the high-temperature metal pipe is within the clamping interval, the independent lifting chain connected to the auxiliary lifting hole 2011 on the hook 2 is lowered, decreasing the clamping interval until the hooks 2 grip the high-temperature metal pipe tightly, achieving a self-locking state.

[0027] The specific operating steps for using the automatic lifting device for high-temperature metal pipes of this utility model are as follows:

[0028] S100. Connect the two load-bearing lifting holes 101 to two independent lifting chains respectively, and connect the four auxiliary lifting holes 2011 to four independent lifting chains.

[0029] S200. Adjust the angle between the laser emitter 5 and the axis of the metal tube using the unheated metal tube. First, adjust the clamping unit based on the distance of the clamping unit from the ground provided by the distance sensing unit 4, so that all the hooks 2 of the clamping unit are at the same distance from the ground. Only pull up the lifting chain connected to the auxiliary lifting hole 2011. At this time, the hooks 2 are far apart and the clamping interval is large. At the same time, lower the lifting chain connected to the load-bearing lifting hole 101 and the auxiliary lifting hole 2011. First, control the lower end of the hook 2 to contact the bottom of the metal tube, and the position of the lifting device clamping the metal tube is the midpoint of the metal tube. Adjust the angle between the laser emitter 5 and the axis of the metal tube so that the light emitted by the laser emitter 5 hits the outer edge of the end face of the metal tube.

[0030] S300. Lift the lifting device above the heated high-temperature metal pipe, slowly lower the lifting device, control the lower end of the grab hook 2 to contact the bottom of the high-temperature metal pipe and control the lifting device to move slowly along the axis of the metal pipe until the light emitted by the laser emitter 5 hits the outer edge of the end face of the metal pipe. At this time, the position of the lifting device holding the metal pipe is the midpoint of the metal pipe. At the same time, pull up the lifting chain connected to the load-bearing lifting hole 101 and the auxiliary lifting hole 2011, and the lifting device will lift the high-temperature metal pipe. At this time, the clamping unit will lock the high-temperature metal pipe due to its own self-locking structure and transport the high-temperature metal pipe to the designated position. During this period, the distance sensing unit 3 provides the distance of the clamping unit from the ground. With the signal provided by the level sensor 5, the operator can further fine-tune the horizontal state of the high-temperature metal pipe by raising and lowering multiple independent lifting chains connected to the load-bearing lifting hole 101.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automatic lifting device for high-temperature metal pipes, comprising a clamping unit connected below a load-bearing lifting joint (1), the clamping unit comprising a hook (2) and a connecting rod shaft (3), the connecting rod shaft (3) being connected to the load-bearing lifting joint (1), characterized in that: The clamping unit is connected to a distance sensing unit (4), and the connecting rod shaft (3) is fixedly connected to a symmetrical laser emitter (5). The symmetrical plane (6) of the symmetrical laser emitter (5) is perpendicular to the horizontal plane. The midpoint of the metal tube clamped on the clamping unit is located on the symmetrical plane (6), and the emission direction of the laser emitter (5) is downward.

2. The automatic lifting device for high-temperature metal pipes according to claim 1, characterized in that, The connecting rod shaft (3) is fixedly connected to a horizontal sensor (7).

3. The automatic lifting device for high-temperature metal pipes according to claim 1, characterized in that, The load-bearing lifting joint (1) is provided with load-bearing lifting holes (101), and the distribution direction of the load-bearing lifting holes (101) is parallel to the axial direction of the metal pipe clamped on the clamping unit.

4. The automatic lifting device for high-temperature metal pipes according to claim 1, characterized in that, The distance sensing unit (4) is fixedly connected to the grappling hook (2).

5. The automatic lifting device for high-temperature metal pipes according to claim 1, characterized in that, The grab hook (2) is provided with an auxiliary lifting joint (201), and the auxiliary lifting joint (201) is provided with an auxiliary lifting hole (2011).

6. The automatic lifting device for high-temperature metal pipes according to claim 1, characterized in that, The clamping unit is a self-locking clamping unit.

7. The automatic lifting device for high-temperature metal pipes according to claim 6, characterized in that, The self-locking clamping unit also includes a first gripper (8), a second gripper (9), a gripper shaft (10), a first connecting rod (11), and a second connecting rod (12). The first gripper (8) and the second gripper (9) are X-shapedly hinged on the gripper shaft (10). The top end of the first gripper (8) is hinged to the bottom end of the second connecting rod (12), and the top end of the second gripper (9) is hinged to the bottom end of the first connecting rod (11). The top ends of the first connecting rod (11) and the second connecting rod (12) are hinged on the connecting rod shaft (3). The gripping hook (2) is set at the bottom end of the first gripper (8) and the second gripper (9).

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