Heavy object lifting device

Abstract

The utility model belongs to the technical field of construction machinery, and particularly relates to a heavy object lifting device which comprises a frame, a front parking rod and a rear parking rod are arranged on the frame at intervals, the frame is rotatably connected with a hanging bracket through a connecting pin, wheels are rotatably installed at the bottom end of the hanging bracket, a hanging rope is connected to the top end of the hanging bracket in a hanging mode, and a hanging hook is hung on the hanging rope. One end of a side pull rope is hung on the lifting hook, the other end of the side pull rope inclines downwards to hang a lifting frame, the lifting frame is rotationally connected with a first hydraulic rod and a second hydraulic rod, and the first hydraulic rod and the second hydraulic rod are rotationally connected with the frame. When the forward speed of the device is blocked by a ground obstacle and the device rapidly descends, the side pull rope can effectively pull the bottom end of the lifting rope, so that goods are prevented from swinging forwards under the inertia effect, and the goods are prevented from swinging forwards and backwards; inertial potential energy of goods is transmitted to the hanging bracket through the side pull rope, the first hydraulic rod and the second hydraulic rod effectively absorb the inertial potential energy of the goods in the process of supporting the hanging bracket in a telescopic mode, and people do not need to additionally apply force needed for controlling the goods to swing.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction machinery, and in particular relates to a heavy object lifting and hoisting device. Background Art

[0002] The utility model patent with the authorization announcement number CN209024106U discloses a heavy object lifting auxiliary device, a frame and a wheel installed at the bottom of the frame, the frame is provided with a lifting main beam inclined toward the rear of the frame, the top of the lifting main beam is provided with a boom extending forward, a pull rod is provided between the top of the lifting main beam and the frame behind it, a support frame is provided between the boom and the lifting main beam, a lifting device is provided at the front end of the boom, the lifting main beam is a triangular beam, which is composed of two side beams connected at the top and fixed at the two sides of the frame at the bottom, the boom is fixed at the intersection of the tops of the two side beams, and a cross beam for enhancing stability is provided between the two side beams. This device is a block lifting auxiliary device made of steel bars, steel pipes and pulleys, which uses local materials and is simple to make. It uses the principle of leverage, which greatly reduces the labor intensity of construction, facilitates operation, ensures construction speed, and saves costs.

[0003] However, the above mechanism has the following problems: when lifting a heavy object and pushing the device forward, when the wheels are obstructed by raised objects during the forward movement, the overall speed of the frame is reduced, and since the heavy object is lifted by a flexible lifting device, the heavy object continues to move forward under the action of inertia, and then swings back and forth, thereby affecting the work efficiency and safety of handling, and may also cause potential hazards to equipment and personnel, such as causing collisions between goods and equipment and personnel, and accelerating the wear of wire ropes. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a heavy object lifting and hoisting device to solve the problem that when the existing heavy object lifting and hoisting device is blocked by a raised object during its forward movement, the heavy object swings back and forth under the action of inertia, thereby affecting the work efficiency and safety of the handling, and may also cause potential harm to equipment and personnel.

[0005] To achieve the above objectives, the utility model adopts the following technical solution: a heavy object lifting and hoisting device, comprising a frame, a front parking rod is provided at one end of the frame, a rear parking rod is provided on the side of the frame away from the front parking rod, the frame is rotatably connected to a hanger through a connecting pin, a wheel is rotatably mounted on the bottom end of the hanger, the top end of the hanger is fastened to one end of a lifting rope, the other end of the lifting rope is fastened to a hook, the hook is fastened to one end of a side pull rope, the other end of the side pull rope is tilted downward and fastened to the hanger, the hanger is rotatably connected to one end of hydraulic rod one and hydraulic rod two through a pin shaft, and the other ends of hydraulic rod one and hydraulic rod two are rotatably connected to the frame through a pin shaft.

[0006] The beneficial effects of the utility model are as follows: when the forward speed of the device is blocked by ground obstacles and decreases rapidly, the side pull rope can effectively pull the bottom end of the lifting rope to prevent the goods from swinging forward under the action of inertia, thereby preventing the goods from swinging back and forth; the inertial potential energy of the goods is transmitted to the hanger through the side pull rope, and the hydraulic rods 1 and 2 effectively absorb the inertial potential energy of the goods in the process of telescopically supporting the hanger, without the need for personnel to apply additional force required to control the swing of the goods.

[0007] In order to make the side pull rope effectively limit the bottom end of the lifting rope during the transportation of goods;

[0008] As a further improvement of the above technical solution: when the top surface of the frame is parallel to the ground, the side pull rope is in a stretched straight state, and the suspension rope is perpendicular to the horizontal plane.

[0009] The beneficial effect of this improvement is that when the operator pushes the frame parallel to the ground to transport goods, the side pull rope remains taut, effectively pulling the bottom end of the lifting rope to prevent the lifting rope from swinging forward, that is, away from the side pull rope, driven by the goods.

[0010] In order to ensure that the hook does not deviate to the left or right when the side pull rope pulls the hook;

[0011] As a further improvement of the above technical solution: the hanger is a steel frame structure, and the axes of the hanging ropes and side pull ropes are located on symmetrical planes in the left and right directions of the hanger.

[0012] The beneficial effect of this improvement is that the lifting rope and the side pull rope arranged at the center of the hanger can cooperate effectively to achieve effective pulling and stable lifting of heavy objects.

[0013] In order to effectively absorb the tension exerted by the side rope under the pulling of heavy objects through the use of hydraulic rod one;

[0014] As a further improvement of the above technical solution: the hydraulic rod 1 and the hook are respectively arranged on the front and rear sides of the hanger.

[0015] The beneficial effect of this improvement is that when the side pull rope is pulled by the inertia force of the cargo and transmits the force to the hanger, the hanger rotates with the connecting pin as the fulcrum, pulling the hydraulic rod 1 to extend, and the hydraulic rod 1 effectively absorbs the inertia potential energy of the cargo during the extension process.

[0016] In order to effectively absorb the tension exerted by the side rope under the pulling of heavy objects through the use of hydraulic rod 2;

[0017] As a further improvement of the above technical solution: the hydraulic rod 1 and the hydraulic rod 2 are respectively arranged on the front and rear sides of the hanger.

[0018] The beneficial effect of this improvement is that when the side pull rope is pulled by the inertia force of the cargo and transmits the force to the hanger, the hanger rotates with the connecting pin as the fulcrum, squeezing the hydraulic rod 2 to shorten, and the hydraulic rod 2 effectively absorbs the inertia potential energy of the cargo during the contraction process.

[0019] In order to effectively ensure the structural strength of the device;

[0020] As a further improvement of the above technical solution: the frame and the hanger are both steel frame structures composed of welded steel sections.

[0021] The beneficial effects of this improvement are: the frame and the hanger structure are stable and have a small dead weight, and can stably lift goods.

[0022] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the use of the utility model in the process of transporting goods;

[0025] Figure 3 This is a schematic diagram of the use of the utility model when the rear parking rod is grounded;

[0026] Figure 4 This is a schematic diagram of the use of the utility model when the front parking rod is grounded;

[0027] In the figure: 1. frame; 2. rear parking rod; 3. front parking rod; 4. connecting pin; 5. hanger; 6. lifting rope; 7. hook; 8. side pull rope; 9. hydraulic rod one; 10. wheel; 11. hydraulic rod two. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] like Figure 1—4 shows: a heavy object lifting device, comprising a frame 1, one end of the frame 1 is provided with a front parking rod 3, the side of the frame 1 away from the front parking rod 3 is provided with a rear parking rod 2, the frame 1 is rotatably connected to a hanger 5 through a connecting pin 4, the bottom end of the hanger 5 is rotatably mounted with a wheel 10, the top end of the hanger 5 is tied to one end of a lifting rope 6, the other end of the lifting rope 6 is tied to a hook 7, the hook 7 is tied to one end of a side pull rope 8, the other end of the side pull rope 8 is tilted downward and tied to the hanger 5, the hanger 5 is rotatably connected to one end of a hydraulic rod 1 9 and a hydraulic rod 2 11 through a pin shaft, the hydraulic The other ends of the rod 1 9 and the hydraulic rod 2 11 are rotatably connected to the frame 1 through a pin shaft. When the forward speed of the device is blocked by a ground obstacle and drops rapidly, the side pull rope 8 can effectively pull the bottom end of the lifting rope 6 to prevent the goods from swinging forward under the action of inertia, thereby preventing the goods from swinging back and forth; the inertial potential energy of the goods is transmitted to the hanger 5 through the side pull rope 8, and the hydraulic rod 1 9 and the hydraulic rod 2 11 effectively absorb the inertial potential energy of the goods in the process of telescopically supporting the hanger 5, without the need for personnel to apply additional force to control the swing of the goods. When the top surface of the frame 1 is parallel to the ground, the side pull rope 8 is in a straight state, and the lifting rope 6 is perpendicular to the horizontal plane, and the operator When the operator pushes the frame 1 parallel to the ground to transport goods, the side pull rope 8 remains taut, effectively pulling the bottom end of the lifting rope 6 to prevent the lifting rope 6 from swinging forward, that is, away from the side pull rope 8, driven by the goods. The hanger 5 is a steel frame structure, and the axes of the lifting rope 6 and the side pull rope 8 are located on the symmetrical planes of the hanger 5 in the left and right directions. At the same time, the lifting rope 6 and the side pull rope 8 arranged at the center of the hanger 5 can effectively cooperate to achieve effective pulling and stable lifting of heavy objects. The hydraulic rod 9 and the hook 7 are respectively arranged on the front and rear sides of the hanger 5. The side pull rope 8 is pulled by the inertia force of the goods and transmits the force to the hanger 5, the hanger 5 rotates with the connecting pin 4 as the fulcrum, pulling the hydraulic rod 1 9 to extend. The hydraulic rod 1 9 effectively absorbs the inertial potential energy of the cargo during the extension process. The hydraulic rod 1 9 and the hydraulic rod 2 11 are respectively arranged on the front and rear sides of the hanger 5. When the side pull rope 8 is pulled by the inertial force of the cargo and transmits the force to the hanger 5, the hanger 5 rotates with the connecting pin 4 as the fulcrum, squeezing the hydraulic rod 2 11 to shorten. The hydraulic rod 2 11 effectively absorbs the inertial potential energy of the cargo during the contraction process. The frame 1 and the hanger 5 are both steel frame structures composed of welded steel sections. The frame 1 and the hanger 5 have stable structures and low dead weight, and can stably lift cargo.

[0031] The working principle of the present technical solution is as follows: the device is pushed to a suitable position so that the hook 7 is located vertically above the cargo lifting point when the front parking rod 3 touches the ground, and then the rope tied to the cargo is hooked on the hook 7, and then the frame 1 is pressed down at one end away from the front parking rod 3 so that the frame 1 is nearly parallel to the ground. At this time, the cargo is suspended in the air by the hook 7, and the staff pushes the device to move and transport the cargo. The moving direction of the device is the direction in which the end of the frame 1 is provided with the front parking rod 3; when the wheel 10 is blocked by the raised ground or other protrusions, the movement of the device is restricted, and at this time the cargo hoisted at the bottom end of the rope 6 maintains the inertia of moving forward, while the side The pull rope 8 plays the role of pulling the bottom end of the lifting rope 6 to prevent the goods from swinging forward, and further prevent the goods from swinging back and forth, and the side pull rope 8 is pulled by the inertia force of the goods and transmits the force to the hanger 5. At this time, the hanger 5 rotates with the connecting pin 4 as the fulcrum, pulling the hydraulic rod 1 9 to extend and squeezing the hydraulic rod 2 11 to shorten. The hydraulic rod 1 9 and the hydraulic rod 2 11 effectively absorb the inertial potential energy of the goods during the extension and retraction process, avoiding the frame 1 being directly rigidly connected to the hanger 5 and causing the frame 1 to be lifted by the goods. While effectively preventing the goods from swinging, there is no need for personnel to apply additional control force to the device, reducing the labor required for personnel to control the swing of the goods.

[0032] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A heavy object lifting device, characterized in that: The invention comprises a vehicle frame (1), one end of which is provided with a front parking rod (3), and a side of the vehicle frame (1) away from the front parking rod (3) is provided with a rear parking rod (2), the vehicle frame (1) is rotatably connected to a hanger (5) through a connecting pin (4), the bottom end of the hanger (5) is rotatably mounted with a wheel (10), the top end of the hanger (5) is hooked to one end of a suspension rope (6), the other end of the suspension rope (6) is hooked to a hook (7), the hook (7) is hooked to one end of a side pull rope (8), the other end of the side pull rope (8) is tilted downward and hooked to the hanger (5), the hanger (5) is rotatably connected to one end of a hydraulic rod 1 (9) and a hydraulic rod 2 (11) through a pin shaft, and the other ends of the hydraulic rod 1 (9) and the hydraulic rod 2 (11) are rotatably connected to the vehicle frame (1) through a pin shaft.

2. A heavy object lifting device according to claim 1, characterized in that: When the top surface of the frame (1) is parallel to the ground, the side pull rope (8) is in a stretched state, and the suspension rope (6) is perpendicular to the horizontal plane.

3. A heavy object lifting device according to claim 1, characterized in that: The hanger (5) is a steel frame structure, and the axes of the hanger ropes (6) and the side pull ropes (8) are located on symmetrical planes in the left and right directions of the hanger (5).

4. A heavy object lifting device according to claim 1, characterized in that: The hydraulic rod (9) and the hook (7) are respectively arranged on the front and rear sides of the hanger (5).

5. A heavy object lifting device according to claim 1, characterized in that: The hydraulic rod one (9) and the hydraulic rod two (11) are respectively arranged on the front and rear sides of the hanger (5).

6. A heavy object lifting device according to claim 1, characterized in that: The vehicle frame (1) and the hanger (5) are both steel frame structures formed by welding section steel.

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