A safe tower crane

Abstract

The present application relates to the technical field of tower cranes, and discloses a safety tower crane, including a tower crane body, a support frame is provided below the tower crane body, a pressure sensor is provided inside the support frame, a support plate is installed inside the support frame, a main steel cable is fixedly connected to the bottom surface of the support plate, a connecting piece is fixedly connected to the bottom end of the main steel cable, a plurality of sliding grooves distributed in a circumference are provided on the outer surface of the connecting piece, a plurality of sliding grooves are slidably connected inside each of the plurality of sliding grooves, and a fixing piece is provided below the support frame. This safety tower crane can detect pressure by installing a pressure sensor, and when the pressure is too high, a plurality of warning lights can light up to warn the surrounding staff, and then a plurality of fixing pieces can be separated from the fixing slots, at which time the connection relationship between the connecting piece and the fixing piece disappears, and the hook will be separated from the connecting piece, achieving the purpose of automatic unhooking.

Description

Technical Field

[0001] The present application relates to the technical field of tower cranes, and in particular to a safety tower crane. Background Art

[0002] Tower cranes are also called tower cranes. They originated in Western Europe. They are rotating cranes with booms installed on the top of tall towers. They have large working spaces and are mainly used for vertical and horizontal transportation of materials and installation of building components in housing construction. They are composed of three parts: metal structure, working mechanism and electrical system. The metal structure includes the tower, boom and base.

[0003] The existing patent (publication number: CN204802903U) discloses a safety tower crane, including a base, a tower, an anti-climbing device, a balancing arm, an operating room and a working arm, the tower is fixed on the base, the operating room is arranged on the tower, the balancing arm and the working arm are respectively hinged on both sides of the tower, the anti-climbing device includes a bottom plate and a baffle welded around the bottom plate, the bottom plate is installed on the inner wall of the tower and fits with the inner wall of the tower, a wind power generation device is arranged on the top of the tower, the hook is slidably connected with the working arm, a camera is arranged on the end of the working arm, the hook is provided with a safety lock tongue, a clamp is arranged on the upper part of the hook, a torsion spring is arranged in the opening of the clamp, and a U-shaped positioning groove is arranged at the free end of the safety lock tongue, and the U-shaped positioning groove is adapted to the hook head of the hook. The utility model improves the safety performance of the tower crane, provides guarantee for daily safe production, saves energy and protects the environment, and avoids the occurrence of safety accidents.

[0004] The above-mentioned document can provide real-time monitoring during use, thus improving the safety of the tower crane during operation. However, when the hook is used to lift cargo exceeding the load, there is a lack of warning, and the hook cannot be automatically unhooked when overloaded, which will cause the tower crane arm to swing due to the heavy load. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a safety tower crane, which has the advantages of improving the safety when lifting goods, and solves the problems raised in the background technology.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a safety tower crane, comprising a tower crane body, a support frame is provided below the tower crane body, a pressure sensor is provided inside the support frame, a support plate is installed inside the support frame, a main steel cable is fixedly connected to the bottom surface of the support plate, a connecting piece is fixedly connected to the bottom end of the main steel cable, a plurality of sliding grooves distributed in a circular shape are provided on the outer surface of the connecting piece, a plurality of sliding grooves are slidably connected to the inside of each of the sliding grooves, a fixing piece is provided below the support frame, a plurality of clamping grooves distributed in a circular shape are provided on the inner wall of the fixing piece, and a plurality of the clamping pieces are clamped in the adjacent clamping grooves.

[0007] Through the above solution, multiple clamping parts are installed to cooperate with the clamping slots to support the fixing part and share the pressure to make it more stable.

[0008] Furthermore, the inner top wall of the connecting member is rotatably connected to a threaded rod, the outer surface of the threaded rod is threadedly connected to a sliding member, a plurality of sliding members are hingedly connected to a transmission plate on one side away from each other, and the other ends of the plurality of transmission plates are hingedly connected to a clamping member close thereto.

[0009] Through the above scheme, the threaded rod can be installed to drive the sliding part to push multiple clamping parts into the clamping groove through the transmission plate during the rotation of the threaded rod, so that the fixing part can be limited and supported.

[0010] Furthermore, a servo motor is installed on the bottom surface of the connecting member, and the output end of the servo motor is fixedly connected to the bottom end of the threaded rod.

[0011] Through the above scheme, the servo motor can drive the threaded rod to rotate, so that the threaded rod can drive multiple clamps back into the connecting part through the sliding part and the transmission plate, and can complete automatic unhooking when the load is large.

[0012] Furthermore, a hook is fixedly connected to the bottom surface of the fixing member, a notch is formed on the inner wall of the hook, a baffle is hinged on the inner wall of the notch, a spring is fixedly connected to the inclined surface of the baffle, and the other end of the spring is fixedly connected to the notch.

[0013] Through the above solution, installing a baffle can improve the safety of the hook and reduce the probability of cargo coming off the hook.

[0014] Furthermore, a rubber pad is installed inside the support frame, and the pressure sensor is in contact with the rubber pad.

[0015] Through the above solution, installing the rubber pad can buffer the pressure on the pressure sensor, so that the pressure sensor can be in flexible contact with the rubber pad, thereby avoiding damage to the pressure sensor.

[0016] Furthermore, a monitoring module is installed on the outer surface of the support frame, and the spring is in a reset state.

[0017] Through the above solution, installing the monitoring module can monitor the lifted cargo, thereby improving the safety when lifting the cargo.

[0018] Furthermore, a hook is fixedly connected to the upper surface of the support frame, the inner wall of the hook is chamfered, and a fishing cable is fixedly connected to the bottom surface of the tower crane body, and the other end of the fishing cable is fixedly connected to the buckle.

[0019] Through the above scheme, the installation of the hook can facilitate connection with the fishing cable, and the chamfering of the inner wall of the hook can reduce the wear of the fishing cable.

[0020] Furthermore, a plurality of warning lights are installed on the outer surface of the support frame, and the plurality of warning lights are distributed in a circle.

[0021] Through the above solution, installing a warning light can warn workers when the load is heavy, thereby improving safety when lifting goods.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This kind of safety tower crane can detect the pressure by installing a pressure sensor, and when the pressure is too high, multiple warning lights can light up to warn the surrounding staff, and then multiple card parts can be separated from the card slots. At this time, the connection relationship between the connecting part and the fixing part disappears, and the hook will be separated from the connecting part, achieving the purpose of automatic unhooking. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The overall structure of this application is cut away Figure 1 ;

[0025] Figure 2 Overall view of this application Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the overall structure of this application;

[0027] Figure 4 This is a schematic diagram of the fixing structure of this application.

[0028] In the figure:

[0029] 1. Tower crane body; 2. Support frame; 3. Pressure sensor; 4. Support plate; 5. Main steel cable; 6. Connector; 7. Sliding groove; 8. Clamp; 9. Fixing part; 10. Clamp; 11. Threaded rod; 12. Sliding part; 13. Transmission plate; 14. Servo motor; 15. Hook; 16. Notch; 17. Baffle; 18. Spring; 19. Rubber pad; 20. Monitoring module; 21. Buckle; 22. Fishing cable; 23. Warning light. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] See also Figure 1 , Figure 2 and Figure 3 A safety tower crane in this embodiment includes a tower crane body 1, a support frame 2 is provided below the tower crane body 1, a pressure sensor 3 is provided inside the support frame 2, a support plate 4 is installed inside the support frame 2, a main steel cable 5 is fixedly connected to the bottom surface of the support plate 4, a connecting piece 6 is fixedly connected to the bottom end of the main steel cable 5, a plurality of sliding grooves 7 distributed in a circumference are provided on the outer surface of the connecting piece 6, a plurality of sliding grooves 7 are slidably connected to the inside of each of the plurality of sliding grooves 7, a fixing piece 9 is provided below the support frame 2, a plurality of card slots 10 distributed in a circumference are provided on the inner wall of the fixing piece 9, and a plurality of card slots 8 are carded with the card slots 10 adjacent to the fixing piece 9, the pressure can be detected by installing the pressure sensor 3, and when the pressure is too large, a plurality of warning lights 23 can light up to warn the surrounding staff, and then the plurality of card slots 8 can be separated from the card slots 10, at which time the connection relationship between the connecting piece 6 and the fixing piece 9 disappears, and the hook 15 will be separated from the connecting piece 6, thereby achieving the purpose of automatic unhooking.

[0032] See also Figure 1 , Figure 2 and Figure 4 The inner top wall of the connecting member 6 is rotatably connected with a threaded rod 11, and the outer surface of the threaded rod 11 is threadedly connected with a sliding member 12. The side surfaces of the multiple sliding members 12 that are away from each other are hinged with a transmission plate 13, and the other ends of the multiple transmission plates 13 are hinged with the clamping members 8 close to them. The installation of the threaded rod 11 can drive the sliding member 12 to push the multiple clamping members 8 into the clamping groove 10 through the transmission plate 13 during the rotation of the threaded rod 11, so that the fixing member 9 can be limited and supported. A servo motor 14 is installed on the bottom surface of the connecting member 6, and the output end of the servo motor 14 is fixedly connected to the bottom end of the threaded rod 11, and the servo motor 14 can drive the threaded rod 11 By rotating, the threaded rod 11 can drive the multiple clamps 8 back into the connecting member 6 through the sliding member 12 and the transmission plate 13, and can automatically unhook when the load is large. The bottom surface of the fixing member 9 is fixedly connected with a hook 15, and the inner wall of the hook 15 is provided with a notch 16. The inner wall of the notch 16 is hinged with a baffle 17, and the inclined surface of the baffle 17 is fixedly connected with a spring 18, and the other end of the spring 18 is fixedly connected to the notch 16. The installation of the baffle 17 can improve the safety of the hook 15 and reduce the probability of unhooking of small goods. A monitoring module 20 is installed on the outer surface of the support frame 2, and the spring 18 is in a reset state. The installation of the monitoring module 20 can monitor the lifted goods, thereby improving the safety when lifting goods.

[0033] See also Figure 1 , Figure 2 and Figure 3A rubber pad 19 is installed inside the support frame 2, and the pressure sensor 3 is in contact with the rubber pad 19. The installation of the rubber pad 19 can buffer the pressure exerted on the pressure sensor 3, so that the pressure sensor 3 can flexibly contact with the rubber pad 19 to avoid damage to the pressure sensor 3. A hook 21 is fixedly connected to the upper surface of the support frame 2, and the inner wall of the hook 21 is chamfered. A fishing cable 22 is fixedly connected to the bottom surface of the tower crane body 1, and the other end of the fishing cable 22 is fixedly connected to the buckle. The installation of the hook 21 can facilitate the connection with the fishing cable 22, and the chamfering of the inner wall of the hook 21 can reduce the wear of the fishing cable 22. A plurality of warning lights 23 are installed on the outer surface of the support frame 2, and the plurality of warning lights 23 are distributed in a circle. The installation of the warning lights 23 can warn the staff when the load is large, thereby improving the safety when lifting goods.

[0034] A safety tower crane in this embodiment can detect pressure by installing a pressure sensor 3, and when the pressure is too high, multiple warning lights 23 can light up to warn the surrounding staff, and then multiple card members 8 can be separated from the card slots 10. At this time, the connection relationship between the connecting member 6 and the fixing member 9 disappears, and the hook 15 will be separated from the connecting member 6, achieving the purpose of automatic unhooking.

[0035] The working principle of the above embodiment is: when the cargo is lifted by the hook 15, the gravity of the cargo will be transferred to the hook 15, and the gravity will be transferred to the support plate 4 through the main steel cable 5. At this time, the pressure will transfer the gravity to the pressure sensor 3. When the load is large, the pressure sensor 3 can transmit a signal so that multiple warning lights 23 can light up to warn the surrounding staff. At this time, the servo motor 14 starts and drives the threaded rod 11 to rotate. The threaded rod 11 can drive the sliding member 12 to slide during the rotation process, so that the sliding member 12 can drive multiple clamps 8 back to the connecting member 6 through the transmission plate 13 during the sliding process. At this time, the fixed frame is separated from the connecting member 6, achieving the purpose of automatic unhooking when the load is large, thereby improving the safety when lifting cargo.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. 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 elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A safety tower crane, comprising a tower crane body (1), characterized in that: A support frame (2) is provided below the tower crane body (1), a pressure sensor (3) is provided inside the support frame (2), a support plate (4) is installed inside the support frame (2), a main steel cable (5) is fixedly connected to the bottom surface of the support plate (4), a connecting piece (6) is fixedly connected to the bottom end of the main steel cable (5), a plurality of sliding grooves (7) distributed in a circumferential manner are provided on the outer surface of the connecting piece (6), a plurality of sliding grooves (7) are slidably connected inside the plurality of sliding grooves (7), a fixing piece (9) is provided below the support frame (2), a plurality of clamping grooves (10) distributed in a circumferential manner are provided on the inner wall of the fixing piece (9), and a plurality of clamping pieces (8) are clamped to the adjacent clamping grooves (10).

2. A safety tower crane according to claim 1, characterized in that: The inner top wall of the connecting member (6) is rotatably connected to a threaded rod (11), the outer surface of the threaded rod (11) is threadably connected to a sliding member (12), a plurality of sliding members (12) are hingedly connected to a transmission plate (13) on one side away from each other, and the other ends of the plurality of transmission plates (13) are hingedly connected to a clamping member (8) adjacent thereto.

3. A safety tower crane according to claim 1, characterized in that: A servo motor (14) is mounted on the bottom surface of the connecting member (6), and an output end of the servo motor (14) is fixedly connected to the bottom end of the threaded rod (11).

4. A safety tower crane according to claim 1, characterized in that: A hook (15) is fixedly connected to the bottom surface of the fixing member (9), a notch (16) is provided on the inner wall of the hook (15), a baffle (17) is hingedly connected to the inner wall of the notch (16), a spring (18) is fixedly connected to the inclined surface of the baffle (17), and the other end of the spring (18) is fixedly connected to the notch (16).

5. A safety tower crane according to claim 1, characterized in that: A rubber pad (19) is installed inside the support frame (2), and the pressure sensor (3) is in contact with the rubber pad (19).

6. A safety tower crane according to claim 4, characterized in that: A monitoring module (20) is installed on the outer surface of the support frame (2), and the spring (18) is in a reset state.

7. A safety tower crane according to claim 1, characterized in that: A hook (21) is fixedly connected to the upper surface of the support frame (2), and the inner wall of the hook (21) is chamfered. A fishing cable (22) is fixedly connected to the bottom surface of the tower crane body (1), and the other end of the fishing cable (22) is fixedly connected to the hook.

8. A safety tower crane according to claim 1, characterized in that: A plurality of warning lights (23) are installed on the outer surface of the support frame (2), and the plurality of warning lights (23) are distributed in a circular pattern.

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