Auxiliary maintenance device for tower crane structure

Abstract

The invention relates to the technical field of building mechanical equipment maintenance, in particular to a tower crane structure auxiliary maintenance device which comprises a rack, a turnover mechanism and a rotating mechanism. The turnover mechanism is composed of a hydraulic cylinder and a rotary supporting plate, the hydraulic cylinder is fixed to the machine base, the end of a telescopic rod of the hydraulic cylinder is hinged to the left side of the rotary supporting plate, the right side of the rotary supporting plate is rotationally connected with the rotating mechanism, the bottom of the rotary supporting plate is hinged to the machine frame, and large-angle turnover of the tower crane section can be achieved. The rotating mechanism comprises a rotating plate connected with the rotating supporting plate through a rotating shaft, is used for fixing the tower crane section and is driven by a stepping motor to rotate to drive the tower crane section to rotate in the circumferential direction. According to the device, through mechanical and automatic operation, the maintenance efficiency and safety of the tower crane section are remarkably improved, the labor intensity of workers and the dependence on hoisting equipment are reduced, and the device is suitable for the high-standard maintenance requirement of a large-scale engineering site.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building machinery equipment maintenance, more particularly to a tower crane structure auxiliary maintenance device. BACKGROUND

[0002] In the construction site, especially in large engineering projects such as nuclear power construction, the tower crane as the key hoisting equipment is in a long-term high-intensity and high-frequency operation state, and its structural safety is directly related to the construction safety and engineering progress. The main structure of the tower crane is composed of multiple standard sections (tower crane sections) connected by high-strength bolts. During use, the tower crane sections need to be regularly inspected, cleaned, anticorrosive and bolted for maintenance and maintenance operations.

[0003] At present, the maintenance of the tower crane section mainly relies on manual operation, which usually requires the tower crane section to be disassembled and placed on the ground. The maintenance personnel observe and operate by climbing, turning over or using simple supports. This method has the following outstanding problems: 1. Low operation efficiency: it is difficult to manually turn over and rotate the tower crane section, especially for large and heavy sections, which often requires multiple people to cooperate or use other hoisting equipment for assistance, which is time-consuming, labor-intensive; 2. Occupying hoisting resources: the maintenance process often requires the use of tower cranes or other hoisting equipment, which affects the normal construction progress and increases the cost of the shift.

[0004] Therefore, a special device is needed to realize safe, efficient and comprehensive auxiliary maintenance of the tower crane section, reduce the dependence on manpower and external equipment, and improve the mechanization and standardization level of maintenance operations. SUMMARY

[0005] In view of the shortcomings of the prior art, the purpose of the present application is to provide a tower crane structure auxiliary maintenance device which can realize safe, efficient and comprehensive auxiliary maintenance of the tower crane section, and reduce the dependence on manpower and external equipment.

[0006] The technical solution adopted by the present application to solve its technical problems is:

[0007] A tower crane structure auxiliary maintenance device, comprising a rack, a turnover mechanism is arranged on the rack, a rotating mechanism is connected to the turnover mechanism, and the rotating mechanism is used to connect the tower crane section; the turnover mechanism comprises a hydraulic cylinder and a rotating support plate, the hydraulic cylinder is fixedly installed on the rack, the left side of the rotating support plate is hinged to the end of the hydraulic telescopic rod of the hydraulic cylinder, the right side of the rotating support plate is rotatably connected with the rotating mechanism, and the bottom of the rotating support plate is hinged to the rack; the rotating mechanism comprises a rotating plate rotatably connected to the rotating support plate through a rotating shaft, the right side of the rotating plate is used to bolt and fix the tower crane section, a stepping motor is fixedly arranged on the rack, and the stepping motor is in transmission connection with the rotating plate to drive the rotating plate to rotate.

[0008] As preferred, the further technical scheme of the present application is:

[0009] Preferably, the transmission connection structure of the stepping motor and the rotating plate is that a wheel seat is arranged on the base, a central shaft is rotatably connected to the wheel seat, and a driving wheel is connected to the central shaft; the output shaft of the stepping motor is fixedly connected to the central shaft; the left side of the rotating plate is provided with an annular groove, and the annular groove and the driving wheel are sleeved with the same belt.

[0010] Preferably, the base is further provided with a counterweight assembly.

[0011] Preferably, the counterweight assembly comprises a counterweight frame, the counterweight frame comprises first, second and third support horizontal plates arranged in sequence from top to bottom, and the third support horizontal plate is lapped on the base; the left ends of the first and second support horizontal plates are fixedly connected through a first support vertical plate, the right ends of the second and third support horizontal plates are fixedly connected through a second support vertical plate, the right ends of the opposite sides of the first and second support horizontal plates are respectively provided with sliding grooves, the left ends of the opposite sides of the second and third support horizontal plates are respectively provided with sliding grooves, and the two sliding grooves are slidably connected with baffle plates; the counterweight assembly is arranged between the first and second support horizontal plates and between the second and third support horizontal plates.

[0012] Preferably, the bottom of the third support horizontal plate is welded with a moving seat, and a rolling assembly is arranged on the moving seat; the base is provided with a mounting hole corresponding to the moving seat.

[0013] Preferably, the rolling assembly comprises an outer cylinder fixedly connected with the moving seat and an inner cylinder slidably arranged in the outer cylinder, and the bottom and top of the inner cylinder are rotatably provided with rotating wheels; the moving seat is provided with a sliding groove, and a top plate is slidably connected in the sliding groove; the bottom surface of the top plate is provided with a storage cavity for storing the rotating wheels; when the rotating wheel at the top of the inner cylinder abuts on the bottom surface of the top plate and is located outside the storage cavity, the rotating wheel at the bottom of the inner cylinder is in contact with the ground, and the counterweight frame as a whole can be moved through the rotating wheel at the bottom of the inner cylinder; when the rotating wheel at the top of the inner cylinder is stored in the storage cavity, the counterweight frame is located on the base.

[0014] Preferably, a plurality of positioning holes are arranged on the top plate, and a positioning bolt is threadedly connected with the moving seat and inserted into the positioning hole.

[0015] Preferably, a anti-dropping ring is arranged on the outer wall of the inner cylinder, and limiting plates are arranged on the top and bottom of the inner wall of the outer cylinder to prevent the anti-dropping ring from sliding out.

[0016] Preferably, the longitudinal section of the moving seat is in an inverted U-shaped structure or an I-shaped structure.

[0017] The present application with the above technical scheme has the following outstanding features compared with the prior art:

[0018] The core beneficial effect of the present invention is that the efficiency, safety and convenience of the maintenance work of the tower crane standard section are significantly improved through a highly mechanized and automated structural design.

[0019] Specifically, first of all, in terms of functional execution, the flipping mechanism drives the rotating support plate through a hydraulic cylinder to perform articulated movement, which can provide a stable and powerful large-angle flipping action for the tower crane section fixed thereon, allowing maintenance personnel to easily access the bottom, top and sides of the section, completely solving the pain points of traditional manual flipping of heavy components, which is difficult, dangerous and inefficient. At the same time, the rotating mechanism uses a stepper motor combined with a belt drive to accurately control the rotating plate connecting the tower crane section to rotate at a uniform speed or in steps, achieving 360° circumferential exposure of the tower crane section without dead angles, greatly facilitating the comprehensive inspection, cleaning, anti-corrosion spraying and tightening operations of the connecting bolts, welds and structural bodies, and integrating the originally cumbersome process into an integrated mechanical operation.

[0020] Secondly, in terms of system stability, the counterweight assembly adopts a multi-layer adjustable frame structure. By flexibly adding or removing counterweight blocks between different layers, it can dynamically balance the huge overturning moment generated during flipping and rotation, ensuring the structural rigidity and smooth operation of the entire device under load conditions, and fundamentally eliminating safety hazards.

[0021] Finally, regarding the equipment's mobility, the innovative rolling assembly integrates a retractable wheel mechanism. By sliding the inner cylinder to adjust the relative position of the top wheel within the top plate's storage cavity, the device can quickly switch between "mobile" and "fixed" operating modes. During mobile operation, the wheel supports lift the frame off the ground, facilitating towing and transportation by manpower or equipment. When fixed, the frame securely touches the ground, forming a stable working platform. This design greatly enhances the equipment's flexibility and site adaptability, reduces the need for other on-site lifting equipment, and optimizes the allocation of construction resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Fig. 1 1 is a schematic structural diagram of a tower crane structure auxiliary maintenance device according to an embodiment of the present invention;

[0023] Fig. 2 is a schematic diagram of the counterweight assembly after the runner is ejected in an embodiment of the present invention;

[0024] Fig. 3 Schematic diagram of the counterweight assembly when the runner is not ejected in an embodiment of the present invention.

[0025] Explanation of the accompanying drawings: 1. Machine base; 2. Counterweight assembly; 3. Hydraulic telescopic rod; 4. Rotating support plate; 5. Rotating plate; 6. Belt; 7. Tower crane section; 21. Counterweight frame; 2101. First supporting horizontal plate; 2102. Second supporting horizontal plate; 2103. Third supporting horizontal plate; 22. Baffle; 23. Counterweight; 24. Moving seat; 25. Rolling assembly; 2501. Outer cylinder; 2502. Inner cylinder; 2503. Limiting plate; 2504. Anti-slip ring platform; 26. Top plate; 27. Positioning bolt; 28. Storage chamber. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific embodiments. The purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0027] like Figs. 1 to 3 As shown, this embodiment provides an auxiliary maintenance device for the structure of a tower crane, including a frame, a flip mechanism is provided on the frame, and a rotating mechanism is connected to the flip mechanism, and the rotating mechanism is used to connect the tower crane section 7; the flip mechanism includes a hydraulic cylinder and a rotating support plate 4, the hydraulic cylinder is fixedly installed on the machine base 1, and the left side of the rotating support plate 4 is hinged to the end of the hydraulic telescopic rod 3 of the hydraulic cylinder, and the rotating support plate 4 is driven to be lifted up by the hydraulic telescopic rod 3, thereby driving the flipping of the rotating support plate 4; the right side of the rotating support plate 4 is rotatably connected to the rotating mechanism, and the bottom of the rotating support plate 4 is hinged to the frame; the rotating mechanism includes a rotating plate 5 rotatably connected to the rotating support plate 4 through a rotating shaft, and the right side of the rotating plate 5 is used to bolt and fix the tower crane section 7, and a stepping motor is fixedly provided on the machine base 1, and the stepping motor is transmission-connected to the rotating plate 5 to drive the rotating plate 5 to rotate.

[0028] Preferably, the transmission connection structure between the stepper motor and the rotating plate 5 is as follows: a wheel seat is provided on the machine base 1, a central shaft is rotatably connected to the wheel seat, and a driving wheel is connected to the central shaft; the output shaft of the stepper motor is fixedly connected to the central shaft, and an annular groove is provided on the left side of the rotating plate 5, and the same belt 6 is sleeved on the annular groove and the driving wheel. The right side of the rotating plate 5 is fixed with a tower crane section 7 by bolts. When in use, the driving wheel is driven to rotate by the stepper motor, and the rotation of the driving wheel drives the belt 6 and the rotating plate 5 to rotate, thereby driving the tower crane section 7 on the rotating plate 5 to rotate.

[0029] Preferably, a counterweight assembly 2 is also installed on the base 1. The counterweight assembly 2 increases the weight of the base 1, which facilitates the stable operation of the auxiliary maintenance device. After removing the counterweight member 23 in the counterweight assembly 2, the base 1 can be easily moved.

[0030] Preferably, the counterweight assembly 2 comprises a counterweight frame 21, the counterweight frame 21 comprising a first support horizontal plate 2101, a second support horizontal plate 2102 and a third support horizontal plate 2103 arranged in sequence from top to bottom, the third support horizontal plate 2103 being lapped on the base 1; the first support horizontal plate 2101 and the second support horizontal plate 2102 are fixedly connected between the left ends thereof through a first support vertical plate, the second support horizontal plate 2102 and the third support horizontal plate 2103 are fixedly connected between the right ends thereof through a second support vertical plate, the right end of the side surface of the first support horizontal plate 2101 and the second support horizontal plate 2102 is respectively provided with a sliding groove, the left end of the side surface of the second support horizontal plate 2102 and the third support horizontal plate 2103 is respectively provided with a sliding groove, the two sliding grooves are slidably connected with a baffle 22, and the counterweight pieces 23 are arranged between the first support horizontal plate 2101 and the second support horizontal plate 2102 and between the second support horizontal plate 2102 and the third support horizontal plate 2103.

[0031] The counterweight pieces 23 are distributed between the first support horizontal plate 2101 and the second support horizontal plate 2102 to form a cavity and between the second support horizontal plate 2102 and the third support horizontal plate 2103 to form a cavity, so as to ensure the weight of the counterweight pieces 23 contained in the counterweight pieces 23 as a whole, and the number of the counterweight pieces 23 in each cavity is reduced, so that when the baffle 22 is pulled out, a large number of counterweight pieces 23 will not be rolled out at one time, and the safety hazard is reduced. In the embodiment, the counterweight pieces 23 can specifically be a discarded reinforcing bar section, a steel plate, an iron block or the like, which can be selected by the construction personnel according to the site conditions.

[0032] Preferably, the bottom of the third support horizontal plate 2103 is welded with a moving seat 24, and the moving seat 24 is installed with a rolling assembly 25; the base 1 is provided with a mounting hole corresponding to the moving seat 24. The rolling assembly 25 comprises an outer cylinder 2501 fixedly connected with the moving seat 24 and an inner cylinder 2502 slidably arranged in the outer cylinder 2501, the bottom and the top of the inner cylinder 2502 are rotatably provided with rotating wheels; the top of the moving seat 24 is provided with a sliding groove, the sliding groove is slidably connected with a top plate 26, and the bottom surface of the top plate 26 is provided with a storage cavity 28 for storing the rotating wheels; when the rotating wheel at the top of the inner cylinder 2502 abuts on the bottom surface of the top plate 26 and is located outside the storage cavity 28, the rotating wheel at the bottom of the inner cylinder 2502 is in contact with the ground, and the counterweight frame 21 as a whole can be moved through the rotating wheel at the bottom of the inner cylinder 2502; when the rotating wheel at the top of the inner cylinder 2502 is stored in the storage cavity 28, the counterweight frame 21 is seated on the rack. A plurality of positioning holes are formed in the top plate 26, and the moving seat 24 is threadedly connected with a positioning bolt 27 inserted into the positioning holes. The outer wall of the inner cylinder 2502 is provided with an anti-falling ring platform 2504, and the top and bottom of the inner wall of the outer cylinder 2501 are provided with limiting plates 2503 for preventing the anti-falling ring platform 2504 from sliding out.

[0033] Further, in the embodiment, the mobile seat 24 is in the shape of a Chinese character or an I-beam in longitudinal section. The frame comprises a plurality of horizontally arranged horizontal parts and a plurality of connecting parts connecting the horizontal parts, and the width of the mobile seat 24 is smaller than the distance between the horizontal parts, facilitating the moving in and out of the mobile seat 24.

[0034] When the counterweight assembly 2 is used, the counterweight frame 21 after the rolling assembly 25 is ejected is first moved to the base 1, and then the counterweight 23 is placed between the first support plate 2101 and the second support plate 2102 of the counterweight frame 21 and between the second support plate 2102 and the third support plate 2103, and then the baffle 22 is inserted to prevent the counterweight 23 from sliding out; then the top plate 26 is moved until the rotating wheel at the top of the rolling assembly 25 slides into the receiving cavity 28 of the top plate 26, and then the bottom of the third support plate 2103 of the counterweight frame 21 is pressed on the base 1, thereby increasing the weight of the rear end of the entire device and preventing the center of gravity from shifting and the device from toppling after the tower crane section 7 is installed.

[0035] When the device is used, the tower crane section 7 is first bolted to the right side of the rotating plate 5 of the rotating mechanism. The hydraulic cylinder is started, the rotating support plate 4 is driven to rotate around the bottom hinge point through the extension and retraction of the hydraulic telescopic rod 3, so that the tower crane section 7 can be adjusted to an appropriate inclination or vertical posture for maintenance. Then the step motor is started, the rotating plate 5 and the tower crane section 7 are driven to rotate circumferentially through the belt 6, so that all surfaces of the tower crane section 7 are exposed, facilitating detection, cleaning, corrosion prevention, and bolt tightening. The counterweight assembly 2 can flexibly increase or decrease the counterweight 23 according to the actual load to balance the moment generated during the turning and rotating process, ensuring the stability of the entire machine. When the device needs to be moved, the rolling assembly 25 is adjusted so that the rotating wheel at the top of the inner cylinder 2502 is separated from the receiving cavity 28 of the top plate 26, and the rotating wheel at the bottom contacts the ground, so that the counterweight frame 21 and the entire machine can be pushed to move; when working, the rotating wheel is retracted, and the counterweight frame 21 is stably seated on the base 1.

[0036] The above only describes the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any equivalent changes made according to the content of the specification and drawings of the present application are included in the scope of the present application.

Claims

1. A tower crane structure auxiliary maintenance device, characterized in that: It includes a frame, a turning mechanism is provided on the frame, a rotating mechanism is connected to the turning mechanism, and the rotating mechanism is used to connect the tower crane section (7); The turning mechanism includes a hydraulic cylinder and a rotating support plate (4), the hydraulic cylinder is fixedly mounted on the machine base (1), the left side of the rotating support plate (4) is hinged to the end of the hydraulic telescopic rod (3) of the hydraulic cylinder, the right side of the rotating support plate (4) is rotatably connected to the rotating mechanism, and the bottom of the rotating support plate (4) is hinged to the frame; The rotating mechanism comprises a rotating plate (5) rotatably connected to a rotating support plate (4) via a rotating shaft, the right side of the rotating plate (5) being used for bolting and fixing a tower crane section (7), a stepping motor being fixedly arranged on the machine base (1), and the stepping motor being transmission-connected to the rotating plate (5) for driving the rotating plate (5) to rotate.

2. The tower crane structure auxiliary maintenance device according to claim 1, characterized in that: The transmission connection structure between the stepper motor and the rotating plate (5) is as follows: a wheel seat is provided on the machine base (1), a central shaft is rotatably connected to the wheel seat, and a driving wheel is connected to the central shaft; the output shaft of the stepper motor is fixedly connected to the central shaft, an annular groove is provided on the left side of the rotating plate (5), and the same belt (6) is sleeved on the annular groove and the driving wheel.

3. The tower crane structure auxiliary maintenance device according to claim 1, characterized in that: A counterweight assembly (2) is also installed on the machine base (1).

4. The tower crane structure auxiliary maintenance device according to claim 3, characterized in that: The counterweight assembly (2) includes a counterweight frame (21), the counterweight frame (21) includes a first supporting transverse plate (2101), a second supporting transverse plate (2102), and a third supporting transverse plate (2103) arranged in sequence from top to bottom, and the third supporting transverse plate (2103) is overlapped on the machine base (1); The left ends of the first supporting transverse plate (2101) and the second supporting transverse plate (2102) are fixedly connected via the first supporting vertical plate, and the right ends of the second supporting transverse plate (2102) and the third supporting transverse plate (2103) are fixedly connected via the second supporting vertical plate. The right ends of the first supporting transverse plate (2101) and the second supporting transverse plate (2102) facing each other are respectively provided with a sliding groove, and the left ends of the second supporting transverse plate (2102) and the third supporting transverse plate (2103) facing each other are respectively provided with a sliding groove, and baffles (22) are slidably connected in both sliding grooves. Counterweights (23) are placed between the first supporting transverse plate (2101) and the second supporting transverse plate (2102) and between the second supporting transverse plate (2102) and the third supporting transverse plate (2103).

5. The tower crane structure auxiliary maintenance device according to claim 4, characterized in that: A movable seat (24) is welded to the bottom of the third supporting transverse plate (2103), and a rolling assembly (25) is mounted on the movable seat (24); and a mounting hole is provided on the machine base (1) corresponding to the movable seat (24).

6. The tower crane structure auxiliary maintenance device according to claim 5, characterized in that: The rolling component (25) includes an outer cylinder (2501) fixedly connected to the moving seat (24) and an inner cylinder (2502) slidably disposed within the outer cylinder (2501). Rotating wheels are provided at both the bottom and the top of the inner cylinder (2502); a chute is provided at the top of the moving seat (24), and a top plate (26) is slidably connected in the chute. A receiving cavity (28) for receiving the rotating wheels is formed on the bottom surface of the top plate (26); the rotating wheel at the top of the inner cylinder (2502) abuts against the bottom surface of the top plate (26), and when it is located outside the receiving cavity (28), the rotating wheel at the bottom of the inner cylinder (2502) contacts the ground, and the entire counterweight frame (21) can move through the rotating wheel at the bottom of the inner cylinder (2502); when the rotating wheel at the top of the inner cylinder (2502) is received in the receiving cavity (28), the counterweight frame (2).

7. The tower crane structure auxiliary maintenance device according to claim 6, characterized in that: A plurality of positioning holes are formed in the top plate (). A positioning bolt (27) for being inserted into the positioning holes is threadedly connected to the moving seat (24).

8. The tower crane structure auxiliary maintenance device according to claim 6, characterized in that: An anti - detachment ring platform (2504) is provided on the outer wall of the inner cylinder (2502), and limiting plates (2503) for preventing the anti - detachment ring platform (2504) from slipping out are provided at both the top and the bottom of the inner wall of the outer cylinder (2501).

9. The tower crane structure auxiliary maintenance device according to claim 6, characterized in that: The longitudinal section of the moving seat (24) has a U - shaped structure or an I - shaped structure.

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