Lightweight portal crane convenient to move

Abstract

The utility model relates to the technical field of light-weight portal cranes, and particularly discloses a light-weight portal crane convenient to move, which comprises two bottom plates, a support is mounted on the upper surface of each bottom plate, a pair of universal wheels is mounted on the lower surface of each support, and the universal wheels are mounted on the bottom plates. A lifting device is installed on the two supports, an anti-swing device is installed between the two supports, the anti-swing device comprises fixing devices, the fixing devices are arranged on one sides of the supports, a cross rod is installed between the two fixing devices, a straightening assembly is installed on the cross rod, a rectangular through hole is formed in the cross rod, and the rectangular through hole is communicated with the lifting device. A pair of circular through holes are formed in the side wall of the rectangular through hole, the circular through holes penetrate through the side wall of the rectangular through hole, and a pair of sliding ways are formed in the side wall of one circular through hole. And the object is still kept in an almost static state.

Description

Technical Field

[0001] This utility model relates to the field of lightweight gantry crane technology, specifically a lightweight gantry crane that is easy to move. Background Technology

[0002] Cranes are now very common in our lives, especially on construction sites, where they are almost indispensable. Common cranes can lift objects by using electric or pneumatic power to drive electric push rods or cylinders to extend and retract, and then slowly move them to the appropriate position.

[0003] In existing technologies, mobile cranes typically lift an object using a cylinder, then move it slowly to a suitable position, and finally lower it slowly once the object stops swaying.

[0004] However, the object will keep swaying during the movement and may fall off the hook, which could damage the object and injure people. After reaching the destination, you need to hold the object to stop it from swaying, which is too troublesome. Utility Model Content

[0005] The purpose of this utility model is to provide a mobile and lightweight gantry crane to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lightweight gantry crane that is easy to move, comprising: a base plate, wherein two base plates are provided, a bracket is installed on the upper surface of each base plate, a pair of casters are installed on the lower surface of each bracket, a lifting device is installed on the two brackets, an anti-sway device is installed between the two brackets, the anti-sway device includes a fixing device, the fixing device is located on one side of the bracket, a crossbar is installed between the two fixing devices, a straightening component is installed on the crossbar, a rectangular through hole is formed on the crossbar, a pair of circular through holes are formed on the side wall of the rectangular through hole, the circular through holes penetrate the side wall of the rectangular through hole, and a pair of slide rails are formed on the side wall of one of the circular through holes.

[0007] Preferably, the straightening assembly includes a rotating rod, a rotating wheel, a wire-collecting wheel, and a nut. The rotating rod passes through the two circular through holes and is rotatably connected to them. One end of the rotating rod is threaded. The rotating wheel is installed on the outer wall of the rectangular through hole and is fixedly connected to the rotating rod. The wire-collecting wheel is embedded in the rectangular through hole and engaged with the rotating rod. The nut is installed on one end of the rotating rod and is threadedly connected to it.

[0008] Preferably, a rope is provided on the cable gathering wheel, one end of the rope is fixedly connected to a buckle, a cylindrical through hole is opened on the cable gathering wheel, a pair of locking channels are opened on the side wall of the cylindrical through hole, and a pair of sliding blocks are fixedly installed on the rotating rod, and the locking channels and the sliding blocks are slidably connected.

[0009] Preferably, a plurality of elastic inclined plates are installed on one side of the rotating wheel, the plurality of elastic inclined plates are arranged around the rotating rod, and two screws are provided on the nut, each screw passing through the nut and threadedly connected to it.

[0010] Preferably, multiple teeth are fixedly installed on both sides of one of the circular through holes, and each tooth is provided with a certain degree of skew.

[0011] Preferably, the fixing device includes a fixing block and a clip. Each fixing block is fixedly installed on one side of the bracket. The fixing block is fixedly connected to the base plate. A groove is formed on one side of the fixing block. A sliding groove is formed on the top wall of the groove. The clip extends into the sliding groove and is slidably connected to it. Two magnets are embedded in the clip.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model proposes an anti-sway device between two supports, which, in conjunction with other structures, effectively prevents the object from swaying significantly when the crane is moved after it is lifted, and also prevents the object from easily falling off. This effectively protects the lifted object and the safety of on-site personnel. After moving to the end point, simply removing the crossbar will keep the object almost stationary. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the anti-sway device of this utility model;

[0016] Figure 3 This is a schematic diagram of the straightening component of this utility model;

[0017] Figure 4 This is a schematic diagram of the fixing device of this utility model;

[0018] Figure 5 This is a three-dimensional structural schematic diagram of the crossbar of this utility model;

[0019] Figure 6 This is a three-dimensional structural diagram of another state of the fixing device of this utility model.

[0020] In the diagram: 1. Lifting device; 2. Bracket; 3. Base plate; 4. Casters; 5. Anti-sway device; 6. Crossbar; 7. Fixing device; 8. Straightening assembly; 9. Fixing block; 10. Groove; 11. Slide rail; 12. Clip; 13. Magnet; 14. Tooth; 15. Rectangular through hole; 16. Circular through hole; 17. Rotating rod; 18. Rotating wheel; 19. Cable feeder; 20. Nut; 21. Elastic inclined plate; 22. Rope; 23. Buckle; 24. Screw; 25. Cylindrical through hole; 26. Track; 27. Sliding block; 151. Slide rail. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] Please see Figure 1 This utility model provides a technical solution: a mobile and lightweight gantry crane, comprising: a base plate 3, of which two base plates 3 are provided, each base plate 3 having a bracket 2 mounted on its upper surface, the bracket 2 being fixedly connected to the base plate 3, and each bracket 2 having a pair of casters 4 mounted on its lower surface, thus allowing the crane to move in various directions; a lifting device 1 is mounted on the two brackets 2, the lifting device 1 being the main device of the crane, which includes a drive mechanism and an electric push rod, etc.; an anti-sway device 5 is installed between the two brackets 2, the anti-sway device 5 being to prevent objects from swaying and falling during lifting and causing injury. The use of this device depends on the situation, especially for lifting over long distances and on uneven terrain. The anti-sway device 5 includes a fixing device. 7. Fixing device 7 is used to fix the anti-sway device 5, so that it can be removed and installed at any time. Fixing device 7 is set on one side of bracket 2. A crossbar 6 is installed between the two fixing devices 7. The crossbar 6 is the support rod of this device. A straightening component 8 is installed on the crossbar 6. The straightening component 8 is the main component of the whole device. A rectangular through hole 15 is opened on the crossbar 6. The rectangular through hole 15 passes through the top and bottom surfaces of the crossbar 6. A pair of circular through holes 16 are opened on the side wall of the rectangular through hole 15. The circular holes are thinner. The circular through holes 16 and the rectangular through holes 15 are set for installing the straightening component 8. The circular through hole 16 passes through the side wall of the rectangular through hole 15. A pair of slide rails 151 are opened on the side wall of one of the circular through holes 16. The slide rails 151 are for facilitating the entry and exit of the sliding block 27.

[0024] When using this device, first determine whether the anti-sway device 5 is needed during operation. If the object being lifted is light or the distance to be transported after lifting is short, the anti-sway device 5 is not needed. In particular, the anti-sway device 5 can be used for lifting over long distances and on uneven road sections to ensure the safety of the transportation process.

[0025] Example 2

[0026] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6Based on Embodiment 1, the straightening assembly 8 includes a rotating rod 17, a rotating wheel 18, a wire-collecting wheel 19, and a nut 20. The rotating rod 17 passes through two circular through holes 16 and is rotatably connected to them. One end of the rotating rod 17 is threaded to fix one end of the rotating rod 17. The rotating wheel 18 is installed on the outer wall of the rectangular through hole 15 and is rotatable. The rotating wheel 18 is fixedly connected to the rotating rod 17 and is fixedly sleeved on the rotating rod 17. The rotation of the rotating wheel 18 can drive the rotation of the rotating rod 17. The wire-collecting wheel 19 is embedded in the rectangular through hole 15 and is engaged with the rotating rod 17. During operation, the wire-collecting wheel 19 will rotate with the rotation of the rotating rod 17. Therefore, the rotating rod 17 needs to be rotated during the winding and unwinding process. The nut 20 is installed on one end of the rotating rod 17 and is threadedly connected to it. The nut 20 controls the distance between the rotating wheel 18 and the crossbar 6. When the distance is close, the rotating wheel 18 can lock the wire-collecting wheel 19. If the distance is far, the wire-collecting wheel 19 can move freely. The rotating reel 19 has a rope 22 attached to it. The rotation of the reel 19 is for winding and unwinding the rope 22. One end of the rope 22 is fixedly connected to a buckle 23, which is used to connect to the suspended object, thus controlling the object and preventing it from swinging freely. The reel 19 has a cylindrical through-hole 25, which is the center of the reel 19. The rotating rod 17 is fitted through the cylindrical through-hole 25. A pair of locking channels 26 are provided on the side wall of the cylindrical through-hole 25. A pair of sliding blocks 27 are fixedly installed. When the rotating wheel 18 is close to the crossbar 6 by rotating the nut 20, the sliding blocks 27 will extend into the slot 26. The slot 26 and the sliding blocks 27 are slidably connected. Multiple elastic inclined plates 21 are installed on one side of the rotating wheel 18. The elastic inclined plates 21 have good elasticity, and all the elastic inclined plates 21 are inclined in one direction with the rotating rod 17 as the center. The multiple elastic inclined plates 21 are set with the rotating rod 17 as the center. Two screws 24 are set on the nut 20. The screws 24 fix the nut 20 so that the screws 24 can be rotated easily. Each screw 24 passes through the nut 20 and is threaded to it. Multiple teeth 14 are fixedly installed on both sides of one of the circular through holes 16. The teeth 14 are adapted to the elastic inclined plates 21. Each tooth 14 is set with a certain degree of tilt. The elastic inclined plate 21 can be locked in the tilt of the tooth 14.

[0027] In actual use, the cable feeder 19 is initially in the state of having all the cable drawn into the feeder. When the cable needs to be released, the nut 20 needs to be turned so that the rotating rod 17 can be pulled back until the elastic inclined plate 21 and the teeth 14 are no longer in contact. No matter how the rotating wheel 18 is turned, the elastic inclined plate 21 will not contact the teeth 14. The sliding block 27 will slide away from the locking track 26 and enter the sliding track 151 to slide and connect with it. At this time, the buckle 23 can be pulled to hook the object to be lifted. Then, loosen the screw 24 and turn the nut 20 so that the rotating wheel 18 moves towards the crossbar 6 until the elastic inclined plate 21 contacts the crossbar 6. Then, tighten the screw 24. At this time, the rotating wheel 18 can only be turned in one direction, which will cause the rope 22 to contract. When the rope 22 is straightened, turn the rotating wheel 18 forcefully to tighten the rope 22.

[0028] Example 3

[0029] Please see Figure 2 and Figure 4 Based on Embodiment 2, the fixing device 7 includes a fixing block 9 and a clamp 12. The fixing block 9 is used to provide a fixed environment. Each fixing block 9 is fixedly installed on one side of the bracket 2. The fixing block 9 is installed between two brackets 2, that is, on the inner side of the bracket 2. The fixing block 9 is fixedly connected to the base plate 3, which makes the fixing block 9 more solid and reliable. A groove 10 is provided on one side of the fixing block 9. The groove 10 is used to place the crossbar 6. A sliding groove 11 is provided on the top wall of the groove 10. The clamp 12 extends into the sliding groove 11 and slides with it. The clamp 12 can be lifted by hand and dropped freely. Two magnets 13 are embedded in the clamp 12. After the two magnets 13 fall, they will attract the clamp block, so that the clamp 12 will not easily jump up during transportation.

[0030] In actual use, when it is necessary to install the crossbar 6, lift the clips 12 on both sides, then put the crossbar 6 into the groove 10, and then release the clips 12 to let it fall freely. The magnets 13 on the clips 12 will attract the clips, so that the crossbar 6 will not slide out automatically. When using this device, first determine whether the anti-sway device 5 is needed during operation. If the object being lifted is light or the distance to be transported after lifting is short, the anti-sway device 5 is not needed. Especially for long-distance hoisting and on uneven road sections, the anti-sway device 5 can be used to ensure the safety of the transportation process. In actual use, the cable reel 19 is initially in the state of having all the cable reel inside. When it is necessary to release the cable, it needs to be rotated. Nut 20 allows the rotating rod 17 to be pulled back until the elastic inclined plate 21 no longer contacts the teeth 14, and no matter how the rotating wheel 18 is rotated, the elastic inclined plate 21 will not contact the teeth 14. The sliding block 27 will slide away from the locking track 26 and enter the sliding track 151 to slide and connect with it. At this time, the buckle 23 can be pulled to hook the object to be lifted. Then loosen the screw 24 and rotate the nut 20 to make the rotating wheel 18 move towards the crossbar 6 until the elastic inclined plate 21 contacts the crossbar 6. Then tighten the screw 24. At this time, the rotating wheel 18 can only be rotated in one direction, which will cause the rope 22 to contract. When the rope 22 is straightened, rotate the rotating wheel 18 with force to tighten the rope 22.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile, lightweight, portal crane comprising: Two bottom plates (3) are arranged, characterized in that: the upper surface of each bottom plate (3) is provided with a support (2), the lower surface of each support (2) is provided with a pair of universal wheels (4), a lifting device (1) is arranged on the two supports (2), an anti-swing device (5) is arranged between the two supports (2), the anti-swing device (5) comprises a fixing device (7), the fixing device (7) is arranged on one side of the support (2), a cross bar (6) is arranged between the two fixing devices (7), a straightening assembly (8) is arranged on the cross bar (6), a rectangular through hole (15) is arranged on the cross bar (6), a pair of circular through holes (16) are arranged on the side wall of the rectangular through hole (15), the circular through holes (16) penetrate the side wall of the rectangular through hole (15), and a pair of sliding grooves (151) are arranged on the side wall of one of the circular through holes (16).

2. A mobile and lightweight portal crane according to claim 1, characterized in that: The straightening assembly (8) comprises a rotating rod (17), a rotating wheel (18), a collecting wheel (19) and a nut (20), the rotating rod (17) penetrates the two circular through holes (16) and is rotationally connected with the two circular through holes (16), one end of the rotating rod (17) is provided with a thread, the rotating wheel (18) is arranged on the outer wall of the rectangular through hole (15), the rotating wheel (18) is fixedly connected with the rotating rod (17), the collecting wheel (19) is embedded in the rectangular through hole (15) and is clamped with the rotating rod (17), and the nut (20) is arranged on one end of the rotating rod (17) and is threadedly connected with the rotating rod (17).

3. A mobile and lightweight portal crane according to claim 2, characterized in that: A rope (22) is arranged on the collecting wheel (19), one end of the rope (22) is fixedly connected with a buckle (23), a cylindrical through hole (25) is arranged on the collecting wheel (19), a pair of clamping grooves (26) are arranged on the side wall of the cylindrical through hole (25), a pair of sliding clamping blocks (27) are fixedly arranged on the rotating rod (17), and the clamping grooves (26) and the sliding clamping blocks (27) are slidably connected.

4. A mobile and lightweight portal crane according to claim 3, characterized in that: A plurality of elastic inclined plates (21) are arranged on one side of the rotating wheel (18), the plurality of elastic inclined plates (21) are arranged around the rotating rod (17), two screws (24) are arranged on the nut (20), and each screw (24) penetrates the nut (20) and is threadedly connected with the nut (20).

5. A mobile, lightweight portal crane according to claim 4, characterized in that: A plurality of teeth (14) are fixedly arranged on the two sides of one of the circular through holes (16), and each tooth (14) is arranged to be slightly inclined.

6. A mobile and lightweight portal crane according to claim 5, characterized in that: The fixing device (7) comprises a fixed block (9) and a clamping piece (12), each fixed block (9) is fixedly arranged on one side of the support (2), the fixed block (9) is fixedly connected with the bottom plate (3), a recess (10) is arranged on one side of the fixed block (9), a sliding groove (11) is arranged on the top wall of the recess (10), the clamping piece (12) extends into the sliding groove (11) and is slidably connected with the sliding groove (11), and two magnets (13) are embedded in the clamping piece (12).

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