Lifting hook fixing device of truck-mounted crane

Abstract

The utility model discloses a lifting hook fixing device of a truck-mounted crane, which belongs to the technical field of lifting hook fixing and comprises a connecting seat, a plurality of grounding plates are arranged on the side of the connecting seat and fixedly connected with a carriage, a lifting plate capable of lifting is arranged above the connecting seat, and the lifting plate is fixedly connected with the connecting seat. A lifting piece composed of a plurality of hinge rods is arranged between the lifting plate and the connecting base, a concave part is arranged at the top of the connecting base, the concave part is provided with a double-spiral threaded rod and two nut bases, the double-spiral threaded rod drives the lifting plate to ascend and descend, and the two sides of the top of the lifting plate are both connected with fixing side plates; and a movable baffle is movably connected between the adjacent sides of the two fixed side plates, one side of the movable baffle is connected with a traction rope, and a winding roller used for winding the traction rope is arranged at the top of the lifting plate. According to the lifting hook fixing device of the truck-mounted crane, through the lifting effect and automatic control over the movable gear, the lifting hook can be restrained and tensioned, operation is easy, and automation is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of hook fixing, in particular to a hook fixing device for a truck crane. Background Art

[0002] Truck crane, full name truck crane transporter, is a kind of equipment that uses hydraulic lifting and telescopic system to achieve lifting, rotation and hoisting of goods, usually installed on trucks. Truck crane has good mobility and rapid transfer. It can integrate lifting and transportation functions, improve resource utilization, and is much cheaper than truck crane. It is favored by the market because of its flexible and versatile features. However, the truck hook is connected to the boom with steel wire rope. When transporting fragile goods, the slightly shaking hook is very likely to hit the goods, causing damage to the goods and causing unnecessary losses to the owner and the driver.

[0003] The hook fixing device for a truck-mounted crane with publication number CN218403426U is a device for fixing a hook of a truck-mounted crane, wherein a casing window is provided through a groove on one side of the casing, and the casing and the bucket shell are connected to form a shell that can cover the hook, thereby completely isolating the hook from the cargo, and a through hole is opened on the casing surface opposite to the casing window, and connected to the hook fixing limit plate handle through a spring rotating shaft, and the hook fixing limit plate handle is located at one end of the inner side of the casing, and the hook fixing limit plate is fixedly installed, and the hook hanging rod is transversely installed on the inner side of the casing between the casing window and the hook fixing limit plate handle. When fixing the hook, the hook fixing limit plate handle is first pulled to create enough space between the hook fixing limit plate and the hook hanging rod, so that the hook of the hook is hooked on the hook hanging rod, and then the hook fixing limit plate handle is released, and the hook fixing limit plate handle will drive the hook fixing limit plate to reset under the action of the spring rotating shaft, and then resist the hook to prevent the hook from slipping. However, the specific operation process is relatively troublesome. This application proposes a new type of fixing structure for convenience. Utility Model Content

[0004] The utility model aims to provide a hook fixing device for a truck crane to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hook fixing device for a truck crane, comprising a connecting seat, a plurality of grounding plates are arranged on the side of the connecting seat, and the grounding plates are fixedly connected to the position of the carriage, a lifting plate that can be raised and lowered is arranged above the connecting seat, and a lifting member composed of a plurality of hinged rods is arranged between the lifting plate and the connecting seat, a recessed portion is arranged on the top of the connecting seat, and a double-threaded rod and two nut seats for driving the lifting plate to rise and fall are arranged in the recessed portion, fixed side plates are connected to both sides of the top of the lifting plate, and movable blocks are movably connected between adjacent sides of the two fixed side plates, a traction rope is connected to one side of the movable block, and a winding roller for winding the traction rope is arranged on the top of the lifting plate.

[0006] In a further embodiment, an end portion is provided on one side adjacent to the two movable stops, and a telescopic rod for fixing is provided between the two end portions.

[0007] In a further embodiment, the end of the double-threaded rod is rotatably connected to the interior of the concave cavity via a bearing, and threads in opposite directions are provided at both ends of the outer circumference of the double-threaded rod.

[0008] In a further embodiment, both ends of the outer circumference of the double-threaded rod are fixed to the corresponding nut seats, and the outer circumference of the nut seat is matched with the inner circumference of the cavity to form a limit.

[0009] In a further embodiment, a driving motor is installed on one side of the connecting seat, and a driving end of the driving motor passes through the connecting seat and is connected to the end of the double-threaded rod.

[0010] In a further embodiment, the top of the nut seat is hinged to the corresponding hinged rod, and the plurality of hinged rods are designed to be cross-staggered and movable connections.

[0011] In a further embodiment, side plates fixed to the lifting plate are provided on both sides of the winding roller, and a wire groove is provided inside the fixed side plate to facilitate the passage of the traction rope.

[0012] In a further embodiment, a winding motor is installed on one side of one of the side plates, and a driving end of the winding motor passes through the side plate and is connected to the winding roller.

[0013] In a further embodiment, the telescopic rod and one of the end portions are designed to be position-limited and telescopic, and a compression spring is bonded between one side of the telescopic rod and the inside of the end portion.

[0014] In a further embodiment, another end portion is provided with a socket, and a magnetic magnet is arranged inside the socket.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0016] The staggered movable connection design of multiple hinged rods forms a retractable and expandable lifting member. The hinged design of the lifting member makes the lifting plate and the connecting seat form a whole. The threads at both ends of the outer periphery of the double-threaded rod are designed in opposite directions, and the nut seat and the outer periphery of the double-threaded rod are symmetrically sleeved. It should be noted that the hinged position of the upper hinged rod and the lifting plate is a limited sliding design (mainly to avoid motion interference). When the drive motor is running, the lifting plate can be further lifted and lowered stably, and further moved to the position of the hook;

[0017] The movable connection design between the movable stopper and the fixed side plate and the fitting of the movable connection side of the movable stopper and the fixed side plate can realize the limiting effect. The rotation connection design between the winding roller and the two side plates and the connection design between the winding motor and the winding roller, the traction rope winding design around the outer periphery of the winding roller and one end of the traction rope passing through the wire groove of the fixed side plate and connected to the movable stopper, when the traction rope pulls the movable stopper, the movable stopper can be erected to play a blocking role, and when there is no force, it will be affected by its own weight and automatically fall down;

[0018] The adaption design of the two end head sockets and the telescopic rod can realize card insertion, further realizing enhanced stability. The elastic restoring force of the compression spring can pull the telescopic rod inward to separate the card insertion. The operation of the magnetic attractor, under the action of magnetic force, will attract the telescopic rod and the socket to engage;

[0019] The hook fixing device of the truck crane can restrain and tighten the hook through the lifting effect and automatic control of the movable gear, and has simple operation and high automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 For the utility model Figure 1 A magnified view of the structure at center A;

[0023] Figure 3 It is a structural cross-sectional view of the lifting plate and the fixed side plate of the utility model;

[0024] Figure 4 For the utility model Figure 3 A magnified view of the structure at B in the middle.

[0025] Description of reference numerals:

[0026] 1. Connecting seat; 2. Lifting plate; 3. Fixed side plate; 4. Movable stopper; 5. Articulated rod; 6. Double-threaded rod; 7. Nut seat; 9. Side plate; 10. Winding roller; 11. Winding motor; 12. Traction rope; 13. End head; 14. Telescopic rod; 15. Compression spring; 16. Magnetic iron; 17. Grounding plate. DETAILED DESCRIPTION

[0027] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0028] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0029] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0030] The existing vehicle-mounted hook is connected to the boom with a wire rope, which is troublesome to operate and requires manual operation. There are safety hazards during the operation, which may cause personal injury. In view of this, a new type of fixing device is designed, and the specific structure is as follows.

[0031] See also Figures 1 to 4 The hook fixing device of the vehicle-mounted crane comprises a connecting seat 1 and a lifting plate 2. A lifting member composed of a plurality of hinged rods 5 is arranged between the lifting plate 2 and the connecting seat 1. The plurality of hinged rods 5 are cross-staggered movable connection designs. The number of hinged rods 5 can be selected according to actual conditions. A plurality of grounding plates 17 are arranged on the side of the connecting seat 1. A grounding screw hole is opened on the grounding plate 17. The inner periphery of the grounding screw hole is fixedly connected to the position of the carriage through a fastener.

[0032] Fixed side plates 3 are connected to both sides of the top of the lifting plate 2, and movable stops 4 are movably connected between adjacent sides of the two fixed side plates 3. The upper surface of the movable connection end of the movable stop 4 fits with the fixed side plates 3, thereby forming a limit to prevent the movable stop 4 from rotating excessively.

[0033] See also Figures 1 to 4 In order to realize the control of the movable stopper 4, a wire groove is provided inside the fixed side plate 3, and a traction rope 12 is provided on the inner periphery of the wire groove. One end of the traction rope 12 is connected to one side of the movable stopper 4. Two side plates 9 are installed on both sides of the top of the lifting plate 2. A winding roller 10 is rotatably connected between the two corresponding side plates 9. The outer periphery of the winding roller 10 is designed to be wound with one end of the traction rope 12. A winding motor 11 is installed on one side of one of the side plates 9. The driving end of the winding motor 11 passes through the side plate 9 and is connected to the winding roller 10.

[0034] In order to further assist fixation, an end portion 13 is provided on one adjacent side of the two movable stops 4, and a telescopic rod 14 for fixation is provided between the two end portions 13. The telescopic rod 14 and one of the end portions 13 are designed to be telescopically limited, and a protruding limiting portion is provided at the inner end of the telescopic rod 14. A compression spring 15 is bonded between the limiting portion and the inside of the end portion 13. A socket is provided on the other end portion 13, and the socket is adapted to the telescopic rod 14, and a magnetic absorber 16 is provided inside the socket.

[0035] See also Figure 1 In order to achieve lifting and tightening the hook, a recessed portion is provided on the top of the connecting seat 1, and a driving motor is installed on one side of the connecting seat 1. The driving end of the driving motor passes through the connecting seat 1 and is connected to a double-threaded rod 6 through a coupling. The ends of the double-threaded rod 6 are rotatably connected to the inside of the concave cavity through bearings, and threads in opposite directions are provided at both ends of the outer circumference of the double-threaded rod 6.

[0036] Both ends of the outer circumference of the double-threaded rod 6 are sleeved with nut seats 7, the outer circumference of the nut seat 7 is adapted to the inner circumference of the concave cavity and forms a limit, the two nut seats 7 are symmetrically designed, the top of the nut seat 7 is hinged to the corresponding hinged rod 5, in order to avoid movement interference, the hinge position of the upper hinged rod 5 and the lifting plate 2 is a limited sliding design;

[0037] It should be noted that due to the symmetrical design of the two nut seats 7 and the multiple hinged rods 5, the distance between the two hinged rods 5 and the two nut seats 7 forms a structure similar to an equilateral triangle force. Through the stability of the force, when the two nut seats 7 move toward each other, the hinged rods 5 can be further displaced synchronously, thereby achieving stable lifting and lowering.

[0038] The lifting structure can be an electric device such as a hydraulic rod or a telescopic rod. The use of electric equipment can certainly achieve the lifting effect, but since the extension and retraction of electric devices such as hydraulic rods or telescopic rods require a certain amount of extension space margin, for example, if it is a hydraulic rod, there must be enough space at the bottom to store the length of the fixed part of the hydraulic rod, which leads to a waste of space and easily increases the volume of the device, which is not conducive to the loading of goods. Therefore, electric equipment such as hydraulic rods or telescopic rods are not suitable.

[0039] The above-mentioned components and electrical equipment are all existing technologies or existing feasible technologies. The working principles, sizes and models are irrelevant to the functions of this application, so they are not described in detail, and they are all controlled by remote control switches.

[0040] How it works

[0041] When the hook fixing device of the truck crane is in use, when the hook is in the storage position, the rotating motor is started to drive the double-threaded rod 6, drive the nut seat 7 to move synchronously, and make the hinge rod 5 move synchronously, so that the lifting plate 2 rises to the required height. At this time, the movable stopper 4 is on both sides of the center of the hook;

[0042] Start the winding motor 11 to drive the winding roller 10 to rotate, so that the traction rope 12 is wound, so that the movable stopper 4 is pulled, and further the two movable stops 4 can restrain the hook;

[0043] At the same time, the magnetic attraction plate 16 is in operation, and the telescopic rod 14 is further inserted into the socket and fixed by the magnetic attraction force of the magnetic attraction plate 16;

[0044] Then start the driving motor to drive the lifting plate 2 to descend, so that the two movable stops 4 can be synchronously descended, and the hook can be further tightened.

[0045] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including 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 device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hook fixing device for a truck-mounted crane, comprising a connecting seat (1), a plurality of grounding plates (17) being arranged on the side of the connecting seat (1), and the grounding plates (17) being fixedly connected to a vehicle compartment; Features: A lifting plate (2) capable of being raised and lowered is arranged above the connecting seat (1), and a lifting member composed of a plurality of hinged rods (5) is arranged between the lifting plate (2) and the connecting seat (1). A recessed portion is arranged at the top of the connecting seat (1), and a double-threaded rod (6) and two nut seats (7) for driving the lifting plate (2) to be raised and lowered are arranged in the recessed portion. Fixed side plates (3) are connected to both sides of the top of the lifting plate (2), and movable stops (4) are movably connected between adjacent sides of the two fixed side plates (3). A traction rope (12) is connected to one side of the movable stop (4), and a winding roller (10) for winding the traction rope (12) is arranged at the top of the lifting plate (2).

2. The hook fixing device of a truck crane according to claim 1, characterized in that: An end portion (13) is provided on one adjacent side of the two movable stops (4), and a telescopic rod (14) for fixing is provided between the two end portions (13).

3. The hook fixing device of a truck crane according to claim 1, characterized in that: The end of the double-threaded rod (6) is rotatably connected to the interior of the concave cavity via a bearing, and threads in opposite directions are provided at both ends of the outer circumference of the double-threaded rod (6).

4. The hook fixing device of a truck crane according to claim 3 is characterized in that: The two ends of the outer circumference of the double-threaded rod (6) are sleeved and fixedly mounted on the corresponding nut seats (7), and the outer circumference of the nut seat (7) is matched with the inner circumference of the concave cavity to form a limit.

5. The hook fixing device of a truck crane according to claim 4, characterized in that: A drive motor is mounted on one side of the connection seat (1), and a drive end of the drive motor passes through the connection seat (1) and is connected to the end of the double-threaded rod (6).

6. The hook fixing device of a truck-mounted crane according to claim 5, characterized in that: The top of the nut seat (7) is hinged to the corresponding hinged rod (5), and the plurality of hinged rods (5) are designed to be cross-staggered and movable connections.

7. The hook fixing device of a truck crane according to claim 1, characterized in that: Side plates (9) fixed to the lifting plate (2) are provided on both sides of the winding roller (10), and a wire groove for facilitating the passage of the traction rope (12) is provided inside the fixed side plate (3).

8. The hook fixing device of a truck-mounted crane according to claim 7, characterized in that: A winding motor (11) is installed on one side of one of the side plates (9), and a driving end of the winding motor (11) passes through the side plate (9) and is connected to the winding roller (10).

9. The hook fixing device of a truck-mounted crane according to claim 2, characterized in that: The telescopic rod (14) and one of the end sections (13) are designed to be position-limited and telescopic, and a compression spring (15) is bonded between one side of the telescopic rod (14) and the inside of the end section (13).

10. The hook fixing device of a truck-mounted crane according to claim 9, characterized in that: The other end portion (13) is provided with a socket, and a magnetic magnet (16) is arranged inside the socket.

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