Lightweight crane with anti-collision function

Abstract

The invention relates to the field of cranes, in particular to a light-weight crane with an anti-collision function, which comprises a gantry overhead rail, a hoisting crane, a lifting hook and the like, the gantry hanger rail is connected with a hoisting crane in a sliding manner, and the gantry hanger rail is an electric hanger rail; and the hoisting crane is connected with a lifting hook. According to the tire rim clamping device, the clamping rods and the contact blocks can conduct two clamping effects of inner supporting clamping and outer side clamping on a tire rim, and the adaptability of the device is greatly improved; in the clamping process, the connecting state of the lifting shaft and the chassis can be changed, so that the clamping rods are locked through the linkage rods when the clamping rods are used for clamping the inner support, and outer side clamping and locking of the clamping rods are achieved through continuous upward movement of the sliding rings when the clamping rods are used for clamping the outer side; and the first electric push rod can maintain two clamping effects of the clamping rod without continuously applying force, so that the working strain degree of the first electric push rod is reduced, the service life is prolonged, and the hoisting safety is improved.

Description

Technical Field

[0001] The present invention relates to the field of cranes, and particularly to a lightweight crane with an anti-collision function. Background Art

[0002] When transferring the stacked tire steel rims in a factory building, the transfer work of the tire steel rims is usually carried out by means of hoisting. However, the existing hoisting fixtures usually need to continuously apply force through an electric push rod to maintain the clamping state, which greatly increases the fatigue degree of the electric push rod. Moreover, when the electric push rod is damaged, the hoisting fixture has no self-locking protection function, and the tire steel rim will directly fall off the fixture, posing a great safety hazard. Summary of the Invention

[0003] In order to overcome the disadvantages that the existing tire steel rim fixture continuously applies force through an electric push rod to maintain the clamping state, which greatly increases the fatigue degree of the electric push rod, and when the electric push rod is damaged, the hoisting fixture has no self-locking protection function, and the tire steel rim will directly fall off the fixture, posing a great safety hazard, the present invention provides a lightweight crane with an anti-collision function.

[0004] The technical solution of the present invention is: a lightweight crane with an anti-collision function, including a gantry crane; further including a sliding ring, a first electric push rod, a clamping rod, a linkage rod and a chassis; the lower side of the gantry crane is connected with the chassis; a first chute is opened on the upper side of the chassis; at least three second fixing screws are rotatably connected to the chassis; each second fixing screw passes through the chassis and is inserted into the gantry crane; a sliding ring is slidably connected to the gantry crane, the sliding ring is located above the chassis, at least three first fixing screws are rotatably connected to the sliding ring, the first fixing screws penetrate through the sliding ring and are in contact with the surface of the gantry crane, and the first fixing screws are used to fix the sliding ring on the gantry crane; at least a first electric push rod is fixedly connected to the gantry crane, and the output end of the first electric push rod is fixedly connected with the sliding ring; a plurality of clamping rods for clamping the tire steel rim are rotatably connected to the lower side of the sliding ring, and a contact block is arranged on the lower side of each clamping rod; the chassis is connected with a plurality of linkage rods; a through groove is opened on each linkage rod; each clamping rod passes through the through groove on the corresponding linkage rod, and the clamping rod and the linkage rod are rotatably connected through a pin shaft.

[0005] Preferably, the linkage rod is rotatably connected with the chassis, and the linkage rod is in an inclined state with the end towards the chassis being lower and the end towards the clamping rod being higher.

[0006] Preferably, at least two limiting parts are arranged outside the lifting shaft of the gantry crane.

[0007] Preferably, a silica gel layer with a rough surface is arranged on the outer surface of each contact block.

[0008] Preferably, the lifting shaft, slip ring, clamping rod, linkage rod, and chassis of the gantry crane are made of lightweight materials such as high-strength steel, aluminum-magnesium alloy, and high-strength composite plastic.

[0009] Preferably, it further includes a positioning component, which includes a second electric push rod and a positioning block; the second electric push rod is connected to the lower side of the chassis, and the telescopic end of the second electric push rod faces downward; the telescopic rod of the second electric push rod is connected to the positioning block.

[0010] Preferably, the positioning block is detachably connected to the telescopic rod of the second electric push rod.

[0011] Preferably, the lower side of the positioning block is conical.

[0012] Preferably, it further includes a distance measuring sensor; several distance measuring sensors are fixedly connected to the controller.

[0013] Preferably, it further includes a rotating block; several rotating blocks are rotatably connected to the middle of the positioning block, and the rotating blocks are controlled to rotate by a micro motor.

[0014] Advantages of the present invention: The present invention realizes two clamping effects of inner support clamping and outer clamping of the tire steel rim by the clamping rod and the contact block, greatly improving the adaptability of the equipment; and during the clamping process, the connection state between the lifting shaft and the chassis can be changed, so that when the inner support clamping is carried out, the clamping rod is locked by the linkage rod, and when the outer clamping is carried out, the outer clamping lock of the clamping rod is realized by the continuous upward movement of the slip ring; the first electric push rod does not need to continuously apply force to maintain the two clamping effects of the clamping rod, reducing the working fatigue degree of the first electric push rod, increasing the service life, and improving the hoisting safety; Furthermore, by inserting the positioning block into the through hole in the center of the wheel spoke, the lifting shaft is positioned, ensuring that the lifting shaft is located at the center of the automobile steel rim, solving the problem that the existing lifting shaft has no positioning function, and it is difficult for workers to place the lifting shaft at the center of the tire steel rim, resulting in inconsistent outward expansion and inward clamping amplitudes of the three clamping rods, and thus uneven force on the clamping rods, leading to tilting and shaking of the tire steel rim during subsequent hoisting and transfer, greatly increasing the danger of hoisting.

[0015] Furthermore, parts such as the lifting shaft, slip ring, and clamping rod in the present invention are all made of lightweight materials such as high-strength steel, aluminum-magnesium alloy, and high-strength composite plastic, with high strength, light weight, small volume, and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the lightweight crane with anti-collision function of the present invention; Figure 2 is a state diagram of the clamping rod of the present invention in the inner support clamping state; Figure 3 This is a combined three-dimensional structure diagram of the lifting shaft, sliding ring, chassis, second electric push rod and positioning block of the present invention; Figure 4 This is a combined three-dimensional structure diagram of the positioning block and rotating block of the present invention; Figure 5 This is a diagram showing the outer clamping state of the clamping rod of the present invention.

[0017] Explanation of reference numerals: 1 - gantry crane rail, 2 - hoisting crane, 3 - hook, 101 - lifting shaft, 10101 - limiting part, 10102 - sliding part, 102 - controller, 10201 - control button, 10202 - ranging sensor, 103 - sliding ring, 10301 - first fixing screw, 104 - first electric push rod, 105 - clamping rod, 10501 - contact block, 106 - linkage rod, 107 - second electric push rod, 108 - positioning block, 109 - chassis, 10901 - first chute, 10902 - second fixing screw, 201 - limiting ring, 202 - rotating block, 555 - tire steel ring. Detailed implementation manners

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation manners. Embodiment

[0019] A lightweight crane with anti-collision function, as Figures 1 - 5 shown, includes a gantry crane rail 1, a hoisting crane 2 and a hook 3; the gantry crane rail 1 is slidably connected with the hoisting crane 2, and the gantry crane rail 1 is an electric crane rail; the hoisting crane 2 is connected with the hook 3; It also includes a lifting shaft 101, a controller 102, a slip ring 103, a first electric push rod 104, a clamping rod 105, a linkage rod 106 and a chassis 109; a controller 102 is fixedly connected to the lifting shaft 101; control buttons 10201 are arranged on the controller 102; the controller 102 is suspended on the hook 3 through a connecting ring; the lower side of the lifting shaft 101 is connected to the chassis 109; a first chute 10901 is formed on the upper side of the chassis 109; a sliding part 10102 is arranged on the lower side of the lifting shaft 101; the sliding part 10102 slides in the first chute 10901; a fixing groove is formed on the lower side of the sliding part 10102; three second fixing screws 10902 are rotatably connected to the chassis 109; each second fixing screw 10902 passes through the chassis 109 and is inserted into the corresponding fixing groove on the sliding part 10102; a slip ring 103 is slidably connected to the lifting shaft 101, the slip ring 103 is located above the chassis 109, three first fixing screws 10301 are rotatably connected to the slip ring 103, and the first fixing screws 10301 penetrate through the slip ring 103 and are in contact with the surface of the lifting shaft 101; two first electric push rods 104 are fixedly connected to the controller 102, and the output ends of the first electric push rods 104 are fixedly connected to the slip ring 103; three clamping rods 105 are rotatably connected to the lower side of the slip ring 103, and a contact block 10501 is arranged on the lower side of each clamping rod 105; the chassis 109 is connected to three linkage rods 106; a through groove is formed on each linkage rod 106; each clamping rod 105 passes through the through groove on the corresponding linkage rod 106, and the clamping rod 105 and the linkage rod 106 are rotatably connected through a pin shaft.

[0020] The linkage rod 106 is rotatably connected to the chassis 109, and the linkage rod 106 is in an inclined state with the end towards the chassis 109 being lower and the end towards the clamping rod 105 being higher.

[0021] Two limiting parts 10101 are arranged on the outer side of the lifting shaft 101.

[0022] A silica gel layer with a rough surface is arranged on the outer surface of each contact block 10501.

[0023] The lifting shaft 101, the slip ring 103, the clamping rod 105, the linkage rod 106 and the chassis 109 are all made of lightweight materials such as high-strength steel, aluminum-magnesium alloy, and high-strength composite plastics, and have the advantages of being lightweight and having high strength.

[0024] It also includes a positioning assembly, and the positioning assembly includes a second electric push rod 107 and a positioning block 108; the second electric push rod 107 is connected to the lower side of the chassis 109, and the telescopic end of the second electric push rod 107 faces downwards; the telescopic rod of the second electric push rod 107 is connected to the positioning block 108.

[0025] The positioning block 108 is detachably connected to the telescopic rod of the second electric push rod 107.

[0026] The lower side of the positioning block 108 is conical, which is convenient for the positioning block 108 to be inserted into the through hole in the middle of the spoke.

[0027] It also includes a ranging sensor 10202; four ranging sensors 10202 are fixedly connected to the controller 102.

[0028] The working principle of the above embodiment is as follows: When a worker needs to transfer the tire rim 555, first, the worker observes the placement of the tire rim 555 and selects to use the inner support clamping or the outer clamping method, that is, observes the orientation of the spokes of the tire rim 555. It should be noted that the inner support clamping can only be adapted to the situation where the spokes of the tire rim 555 are facing upward. When the spokes of the tire rim 555 are facing upward, the spokes of the tire rim 555 will block the lifting fixture. When the worker uses the inner support clamping method to clamp and lift the tire rim 555, the inner support clamping process is as follows: First, the worker controls the gantry crane rail 1 and the hoisting crane 2 to drive the hook 3 to move, so that the hook 3 drives the parts thereon to move directly above the tire rim 555. Then, the worker manually pulls the hook 3 downward, and simultaneously the hoisting crane 2 releases the rope connecting the hook 3 downward, so that the clamping part on the hook 3 is placed into the tire rim 555 from the hollow side of the tire rim 555. Then, as Figure 2 shown; the clamping rod 105 and the contact block 10501 are located inside the tire rim 555; it should be noted here that the worker can first control the telescopic end of the first electric push rod 104 to retract upward through the control button 10201 on the controller 102, pull the sliding ring 103 upward, and make the clamping rod 105 rotate towards the center point of the sliding ring 103, which is convenient for the worker to place the clamping rod 105 inside the tire rim 555. Then, the worker controls the telescopic end of the first electric push rod 104 to extend downward through the control button 10201 on the controller 102, and then squeezes the sliding ring 103 downward. At this time, the lower end of the clamping rod 105 will rotate outward around the pin shaft on the linkage rod 106, and then the contact block 10501 at the lower end of the clamping rod 105 will contact the inner ring of the tire rim 555, thereby performing inner support clamping on the tire rim 555. Then, the worker controls the hoisting crane 2 to wind up the hook 3 upward, and lift the lifting shaft 101 and the tire rim 555 upward to perform subsequent transfer operations on the tire rim 555; When the worker uses the outer clamping method to clamp and lift the tire rim 555; the outer clamping process is as follows; First, the worker controls the gantry crane rail 1 and the hoisting crane 2 to drive the hook 3 to move, and make the chassis 109 contact the spokes of the tire rim 555; then, as Figure 5As shown, the clamping rod 105 and the contact block 10501 are located outside the tire steel rim 555. It should be noted here that the worker can first control the telescopic end of the first electric push rod 104 to extend downward through the control button 10201 on the controller 102, so that the lower end of the clamping rod 105 rotates outward around the pin shaft on the linkage rod 106, facilitating the worker to place the clamping rod 105 outside the tire steel rim 555. Then, the worker controls the telescopic end of the first electric push rod 104 to retract upward through the control button 10201 on the controller 102, and then pulls the sliding ring 103 upward. At this time, the lower end of the clamping rod 105 will rotate inward around the pin shaft on the linkage rod 106, and then the contact block 10501 at the lower end of the clamping rod 105 will contact the outside of the tire steel rim 555, thereby clamping the outside of the tire steel rim 555. Then, the worker controls the hoisting crane 2 to wind up the hook 3 upward, lifting the lifting shaft 101 and the tire steel rim 555 upward for subsequent transfer operations of the tire steel rim 555. In this way, through this method, the clamping rod 105 and the contact block 10501 have two functions of inner support clamping and outer clamping, greatly improving the adaptability of the equipment. When performing inner support clamping on the tire steel rim 555, the worker first removes the first fixing screw 10301 and then tightens the second fixing screw 10902. At this time, the lifting shaft 101 is slidably connected to the sliding ring 103, and the second fixing screw 10902 passes through the chassis 109 and is screwed into the sliding part 10102. The lifting shaft 101 and the chassis 109 are in a fixed state, so that when the lifting shaft 101 is lifted upward, the lifting shaft 101 drives the chassis 109 to move upward, and the chassis 109 drives the linkage rod 106 to move upward, gradually changing the inclined linkage rod 106 into a horizontal state and extruding the clamping rod 105 outward. And when the lifting shaft 101 is lifted, due to the gravity of the tire steel rim 555, the chassis 109 will continuously be in a state of being pulled upward. Therefore, during the hoisting process, the linkage rod 106 will always extrude the clamping rod 105 outward to perform inner support clamping on the tire steel rim 555. At this time, by using the linkage rod 106 instead of the first electric push rod 104, during the transfer process of the tire steel rim 555, the first electric push rod 104 does not need to continuously apply force to maintain the inner support clamping state of the clamping rod 105 on the tire steel rim 555, reducing the working fatigue degree of the first electric push rod 104 and increasing the service life of the first electric push rod 104. Since the linkage rod 106 always extrudes the clamping rod 105 outward to perform inner support clamping on the tire steel rim 555 during the hoisting process, the linkage rod 106 locks the clamping rod 105 during the hoisting process, avoiding the problem that when the first electric push rod 104 is damaged, the tire steel rim 555 will directly fall off the fixture, posing a great safety hazard.

[0029] Furthermore, when the outer side of the tire rim 555 is clamped tightly, after the clamping rod 105 clamps the tire rim 555, the worker first tightens the first fixing screw 10301, and then removes the second fixing screw 10902. At this time, the sliding ring 103 and the lifting shaft 101 are in a fixed state, and the lifting shaft 101 and the chassis 109 are in a sliding state. The sliding part 10102 slides in the first slide groove 10901. When the lifting shaft 101 is lifted upward, the sliding part 10102 slides upward in the first slide groove 10901. At this time, the sliding ring 103 moves upward, and the lower end of the clamping rod 105 will move around. The pin on the linkage rod 106 continuously rotates inward, and during the lifting process of the lifting shaft 101, the sliding ring 103 is continuously in a state of being pulled upward. Therefore, during the lifting process, the contact block 10501 will continue to rotate inward around the pin on the linkage rod 106 to clamp the tire rim 555. In this way, when the tire rim 555 is tightly clamped on the outside, the first electric push rod 104 does not need to continuously apply force to maintain the clamping rod 105 on the tire rim 555; similarly, when the clamping rod 105 is clamped on the outside, the outside clamping locking of the clamping rod 105 is achieved by continuously moving the sliding ring 103 upward.

[0030] Furthermore, when the tire rim 555 is clamped by the clamping rod 105 and the contact block 10501, if the lifting shaft 101 is not placed at the center of the tire rim 555, the amplitude of the three clamping rods 105 expanding outward and clamping inward will be inconsistent, thereby causing the lifting shaft 101 to be skewed, resulting in a large shake of the tire rim 555 during subsequent lifting, which greatly increases the risk of lifting. Therefore, when the worker is placing the lifting shaft 101 at the center of the tire rim 555, if Figures 2 - 5 As shown, the worker only needs to insert the positioning block 108 into the through hole in the middle of the wheel spoke of the tire rim 555. During this process, the tapered positioning block 108 will automatically slide into the through hole in the middle of the wheel spoke of the tire rim 555, and the diameter of the upper side of the positioning block 108 is consistent with the diameter of the through hole in the middle of the wheel spoke. After the upper part of the positioning block 108 is inserted into the through hole in the middle of the wheel spoke, it will be corrected by the through hole limit. The lifting shaft 101 is perpendicular to the tire rim 555. Through this method, the worker can quickly find the center position of the tire rim 555 and perform subsequent clamping; the stability and accuracy of the clamping are greatly improved; it should be noted that the worker can replace different positioning blocks 108 according to different tire rims 555 to adapt; Furthermore, during the hoisting process, to improve safety, workers need to stay away from the lifting tool. Therefore, when workers observe from a distance, there will be visual obstacles, resulting in collisions of the tire steel rim 555 during the hoisting process, damaging the tire steel rim 555 and causing unnecessary losses. Therefore, four distance sensors 10202 are fixedly connected to the controller 102. During the hoisting and transportation process, when the distance sensors 10202 detect that the distance to surrounding obstacles is relatively close, the distance sensors 10202 will send a signal to the hoisting crane 2, and then the hoisting crane 2 will stop moving. Then, the worker will carefully observe the surrounding situation and precisely control the hoisting crane 2 slowly to avoid collisions between the tire steel rim 555 and surrounding obstacles, resulting in damage to the tire steel rim 555.

[0031] Based on the above technical effects, the present invention also has the following advantages: The driving structure of the present invention uses fewer components and has a simple structure. In the present invention, except for the power component and the control component, the rest of the parts are made of lightweight materials such as high-strength steel, aluminum-magnesium alloy, and high-strength composite plastics, making the present invention have the lightweight characteristics of high strength and light weight; A limiting portion 10101 is provided outside the hoisting shaft 101, so that the sliding ring 103 can only slide up and down on the hoisting shaft 101 and cannot rotate, greatly improving the stability of the sliding ring 103 and preventing the sliding ring 103 from rotating and swinging during operation, causing the sliding ring 103 to be twisted under force and damaging the first electric push rod 104 and the clamping rod 105; Silica gel layers with rough surfaces are provided on the outer surfaces of the contact blocks 10501, greatly increasing the friction between the contact blocks 10501 and the tire steel rim 555 and improving the clamping effect of the clamping rod 105 and the contact blocks 10501 on the tire steel rim 555. Embodiment

[0032] Based on Embodiment 1, as Figures 3 - 5 shown, it further includes a rotating block 202; four rotating blocks 202 are rotatably connected to the middle of the positioning block 108, and the rotating blocks 202 are controlled to rotate by a micro motor.

[0033] The working principle of the above embodiment is as follows: To further prevent the tire steel rim 555 from falling, as Figures 3 - 5As shown in the figure: In the initial state, the rotating block 202 is in a retracted state. At this time, the rotating block 202 is located within the positioning block 108. The positioning block 108 and the rotating block 202 can pass through the through-hole at the center of the spoke up and down. When the positioning block 108 is inserted into the through-hole in the middle of the spoke, the limiting ring 201 will contact the surface of the spoke. Then, the worker can control the second electric push rod 107 to drive the positioning block 108 to continue moving downward, so that the rotating block 202 on the positioning block 108 is completely located below the spoke. Then, the worker controls the micro motor to rotate the rotating block 202 outwards and unfold it to the outside of the through-hole at the center of the spoke, making the rotating block 202 perpendicular to the positioning block 108. At this time, the rotating block 202 can no longer pass through the through-hole in the middle of the spoke. Then, the worker pulls the positioning block 108 upward through the second electric push rod 107, so that the rotating block 202 contacts the lower surface of the spoke. In this way, the tire steel ring 555 is further restricted by the rotating block 202, further preventing the tire steel ring 555 from falling off.

[0034] The above are only examples of the present invention and are not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the known prior art of those skilled in the art.

Claims

1. A lightweight crane with an anti-collision function, characterized in that: It includes a gantry crane; it also includes a slip ring (103), a first electric push rod (104), a clamping rod (105), a linkage rod (106) and a chassis (109); the lower side of the gantry crane is connected to the chassis (109); a first chute (10901) is provided on the upper side of the chassis (109); at least three second fixing screws (10902) are rotatably connected to the chassis (109); each second fixing screw (10902) passes through the chassis (109) and then inserts into the gantry crane; a slip ring (103) is slidably connected to the gantry crane, the slip ring (103) is located above the chassis (109), at least three first fixing screws (10301) are rotatably connected to the slip ring (103), the first fixing screws (10301) penetrate through the slip ring (103) and contact the surface of the gantry crane, and the first fixing screws (10301) are used to fix the slip ring (103) on the gantry crane; at least a first electric push rod (104) is fixedly connected to the gantry crane, and the output end of the first electric push rod (104) is fixedly connected to the slip ring (103); several clamping rods (105) for clamping the tire rim (555) are rotatably connected to the lower side of the slip ring (103), and a contact block (10501) is provided on the lower side of each clamping rod (105); the chassis (109) is connected to several linkage rods (106); a through groove is provided on each linkage rod (106); each clamping rod (105) passes through the through groove on the corresponding linkage rod (106), and the clamping rod (105) and the linkage rod (106) are rotatably connected by a pin shaft.

2. The lightweight crane with anti-collision function according to claim 1, wherein: The linkage rod (106) is rotatably connected to the chassis (109), and the linkage rod (106) is in an inclined state with the end facing the chassis (109) being lower and the end facing the clamping rod (105) being higher.

3. The lightweight crane with anti-collision function according to claim 1, characterized in that: At least two limiting parts (10101) are provided on the outer side of the lifting shaft (101) of the gantry crane.

4. The lightweight crane with anti-collision function according to claim 1, characterized in that: A silicone layer with a rough surface is provided on the outer surface of each contact block (10501).

5. The lightweight crane with anti-collision function according to claim 1, characterized in that: The lifting shaft (101), slip ring (103), clamping rod (105), linkage rod (106), and chassis (109) of the gantry crane are all made of lightweight materials such as high-strength steel, aluminum-magnesium alloy, and high-strength composite plastic.

6. The lightweight crane with an anti-collision function according to claim 1, characterized in that: It also includes a positioning component, and the positioning component includes a second electric push rod (107) and a positioning block (108); the second electric push rod (107) is connected to the lower side of the chassis (109), and the telescopic end of the second electric push rod (107) faces downward; the telescopic rod of the second electric push rod (107) is connected to the positioning block (108).

7. The lightweight crane with anti-collision function according to claim 6, characterized in that: The positioning block (108) is detachably connected to the telescopic rod of the second electric push rod (107).

8. The lightweight crane with anti-collision function according to claim 7, characterized in that: The lower side of the positioning block (108) is conical.

9. The lightweight crane with anti-collision function according to claim 1, characterized in that: It also includes a distance measuring sensor (10202); several distance measuring sensors (10202) are fixedly connected to the controller (102).

10. The lightweight crane with anti-collision function according to claim 8, characterized in that: It also includes a rotating block (202); several rotating blocks (202) are rotatably connected to the middle of the positioning block (108), and the rotating blocks (202) are controlled to rotate by a micro motor.

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