Prestress tensioning, suspending and lifting equipment

Abstract

The invention provides prestress tension suspension lifting equipment. The prestress tension suspension lifting equipment comprises a load hanging shaft, a cantilever mechanism and a power mechanism, the cantilever mechanism comprises a first rotating cantilever, a second rotating cantilever and suspension equipment; the first rotary cantilever comprises a first mounting seat, a first cantilever, a first rotary bearing, a first rotary gear coaxially arranged on the periphery of the first rotary bearing in a sleeving manner, at least two second driving motors arranged on the first mounting seat at equal intervals, and a first driving gear arranged on output shafts of the second driving motors and meshed with the first rotary gear; the first rotary gear is driven to rotate through the at least two second driving motors, so that the load can be uniformly distributed to the multiple second driving motors, the load is prevented from being concentrated to the single second driving motor, the single-side abrasion of the first rotary gear is reduced, and the service life of the first rotary gear is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of building construction machinery, and in particular to a prestressed tensioning suspension lifting device. Background Art

[0002] During the construction of a nuclear power plant, the nuclear island building (i.e., the inner building, also known as the containment) is the core part of the nuclear power plant, which contains key equipment such as the reactor and steam generator. The main structure of the containment is usually cast with high-strength concrete to ensure that the containment can provide sufficient structural strength to protect the internal equipment. The containment is usually divided into a cylindrical structure and a hemispherical dome structure. The cylindrical structure is perpendicular to the ground and forms a 90-degree angle with the horizontal plane. The buttresses are set in the containment and protrude from the shell wall, and the buttresses extend to the hemispherical dome. The function of the buttresses is to anchor the horizontal prestressed steel bundles of the containment.

[0003] In order to enhance the safety and stability of the containment concrete structure, prestressed tensioning technology is usually used to apply pre-compressive stress before the containment structure is subjected to external loads, thereby improving the bending resistance and rigidity of the structure and increasing the durability of the structure. During the prestressed tensioning construction of the containment, a working platform for installing tensioning equipment such as jacks needs to be built along the facade of the containment buttresses to ensure that the staff can perform tensioning operations safely and effectively. Prior to this, it is necessary to pre-assemble guide rails for the movement of the working platform on the facade of the buttresses of the containment. In the existing construction platform, the guide rails are usually fixed to the buttresses of the containment only through embedded parts and two are arranged at intervals along the lateral direction. Specifically, the guide rails of the buttresses arranged on the cylinder of the containment are perpendicular to the horizontal plane, and the guide rails of the buttresses arranged on the hemispherical dome of the containment are arranged along the curved surface of the hemispherical dome.

[0004] The Chinese utility model patent with announcement number CN212832453U discloses a construction crank arm device dedicated to a nuclear power plant, including: a connecting arm, which is fixed on a track climber; a first rotating device is fixed on both ends of the connecting arm; one end of the first rotating arm is fixed on the first rotating device, and the first rotating device is used to drive the first rotating arm to rotate; the second rotating device is fixed to the other end of the first rotating arm; one end of the second rotating arm is fixed on the second rotating device, and the second rotating device is used to drive the second rotating arm to rotate; a moving device is movably installed on the second rotating arm, and is used to reciprocate along the length direction of the second rotating arm; and an electric hoist is fixed on the moving device.

[0005] However, the above-mentioned prior art construction crank arm device dedicated to nuclear power plants uses a single first rotary motor to drive the first rotary arm to rotate. When the weight of the first rotary arm and the second rotary arm, mobile device and electric hoist it carries is large, the load is concentrated on one side of the single first rotary motor, resulting in uneven distribution of the rotational driving force of the first rotary motor and causing unilateral wear of the first rotary outer teeth. In addition, due to the narrow construction environment, the first rotary motor is prone to collide with the wall and be damaged, resulting in the first rotary arm being unable to rotate, posing a safety hazard.

[0006] In view of this, it is necessary to improve the construction crank arm device dedicated to nuclear power plants in the prior art to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to disclose a prestressed tensioning suspension lifting equipment, which is used to solve the many defects of the construction boom device dedicated to nuclear power plants in the prior art, especially to avoid concentrating the load on a single second drive motor to reduce the unilateral wear of the first rotating gear.

[0008] To achieve the above-mentioned object, the present invention provides a prestressed tension suspension lifting device, comprising: a suspension shaft, a cantilever mechanism arranged at both ends of the suspension shaft to suspend the tension device, and a power mechanism arranged at both sides of the suspension shaft;

[0009] The cantilever mechanism comprises: a first rotating cantilever rotating in a first horizontal plane, a second rotating cantilever arranged on the first rotating cantilever and rotating in a second horizontal plane, and a suspension device arranged on the second rotating cantilever and suspending the tensioning device;

[0010] The first rotating cantilever includes: a first mounting seat and a first cantilever, a first slewing bearing clamped between the first mounting seat and the first cantilever, the first cantilever rotates relative to the first mounting seat in a first horizontal plane through the first slewing bearing, a first slewing gear coaxially sleeved on the outer periphery of the first slewing bearing, at least two second driving motors equally spaced apart on the first mounting seat, and a first driving gear disposed on an output shaft of the second driving motor and meshing with the first slewing gear.

[0011] As a further improvement of the present invention, two of the second driving motors are symmetrically arranged on the first mounting seat.

[0012] As a further improvement of the present invention, the second rotating cantilever comprises: a second cantilever configured with the suspension device, a second mounting seat configured on the first cantilever, a second slewing bearing clamped between the second mounting seat and the second cantilever, the second cantilever rotates relative to the second mounting seat in a second horizontal plane through the second slewing bearing, a second slewing gear coaxially sleeved on the outer periphery of the second slewing bearing, at least two third driving motors equally spaced from the second mounting seat, and a second driving gear configured on the output shaft of the third driving motor and meshing with the second slewing gear;

[0013] The suspension device suspends the tensioning device and moves along the length direction of the second cantilever.

[0014] As a further improvement of the present invention, the two third driving motors are symmetrically arranged on the second mounting seat.

[0015] As a further improvement of the present invention, the prestressed tension suspension lifting equipment further comprises: a reinforcing hoop which is arranged on the outer periphery of the suspension shaft portion and is connected to the first mounting seat.

[0016] As a further improvement of the present invention, the power mechanism includes: a cross bar, a connecting frame arranged at both ends of the cross bar in the length direction, a transmission shaft arranged on both sides of the cross bar and parallel to the suspension shaft, the transmission shaft passes through the connecting frame and is rotatably connected to the connecting frame, a first drive motor arranged on the cross bar to drive the transmission shaft to rotate, a power gear coaxially sleeved at both ends of the transmission shaft and meshing with a rack formed on the outside of the guide rail and formed in the connecting frame, and a plurality of guide wheels symmetrically arranged on the inner side of the connecting frame and rotatably connected to the connecting frame.

[0017] As a further improvement of the present invention, the prestressed tensioning suspension lifting equipment also includes: an anti-fall mechanism configured on the power mechanism, a pivot mechanism rotationally connecting the power mechanism and the suspension shaft, and a leveling mechanism configured on the power mechanism to adjust the cantilever mechanism to a horizontal posture.

[0018] As a further improvement of the present invention, the anti-fall mechanism includes: a shell configured on the connecting frame and penetrated by the transmission shaft, a fall arrester configured on the shell, and a transmission assembly arranged in the shell and connected to the fall arrester to limit the rotation of the transmission shaft.

[0019] As a further improvement of the present invention, the pivot mechanism includes: at least two mounting plates which are sleeved on the outside of the suspension shaft and rotatably connected to the suspension shaft, and both ends of the mounting plates in the length direction are penetrated by transmission shafts close to both sides of the suspension shaft and rotatably connected to the transmission shafts.

[0020] As a further improvement of the present invention, the leveling mechanism includes: a support assembly configured on the connecting frame, a telescopic unit hinged to the support assembly, and a hinge seat sleeved on the outside of the suspension shaft and hinged to the telescopic shaft of the telescopic unit.

[0021] Compared with the prior art, the beneficial effects of the present invention are: by driving the first rotating gear to rotate through at least two second drive motors, the load can be evenly distributed to multiple second drive motors, thereby avoiding concentrating the load on a single second drive motor, and making the rotational driving force of multiple second drive motors transmitted to the first rotating gear more evenly, so as to reduce the unilateral wear of the first rotating gear and extend the service life of the first rotating gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the prestressed tension suspension lifting equipment disclosed by the present invention;

[0023] Figure 2 It is a partial schematic diagram of the cantilever mechanism being arranged at the end of the suspension shaft;

[0024] Figure 3 A side view of a guide rail for prestressed tension suspension lifting equipment located on the outer facade of the cylinder buttress column of the containment;

[0025] Figure 4 Side view of the guide rails for the prestressed tension suspension hoisting equipment to climb to the exterior facade of the hemispherical dome buttresses of the containment vessel;

[0026] Figure 5 This is the front view of the connection between the power mechanism and the suspension shaft;

[0027] Figure 6 for Figure 5 A cross-sectional view of the transmission shaft and transmission gear cut along the AA axis;

[0028] Figure 7 for Figure 6 A cross-sectional view of the transmission shaft and transmission gear cut along the BB axis;

[0029] Figure 8 This is a front view of the guide wheels formed on both sides of the guide rail and the power gear meshing with the rack. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0031] It is particularly important to note that in the following embodiments, the term "axial" means Figure 5 The axis P of the central suspension shaft 1 is in the direction shown and is parallel to the horizontal plane H. The term "transverse" means a direction parallel to the axial direction.

[0032] Please refer to Figures 1 to 8 A specific implementation of a prestressed tensioned suspension lifting device (hereinafter referred to as "suspension lifting device 100") is disclosed.

[0033] It should be noted that the containment shell is usually divided into two parts: a cylinder and a hemispherical dome. The cylinder is perpendicular to the ground and forms a 90-degree angle with the horizontal plane. The buttresses are arranged in the containment shell and protrude from the shell wall of the containment shell. The buttresses extend from the cylinder to the hemispherical dome. In this embodiment, the guide rail 200 is installed on the outer facade (not shown) of the buttresses (not shown) through embedded parts (not shown). Figure 8 As shown, two guide rails 200 are arranged at intervals along the lateral direction on the outer surface of the buttress column. Figure 3 As shown, the guide rail 200 of the buttress column arranged on the cylinder is perpendicular to the horizontal plane H, and the suspension lifting device 100 moves up and down along the guide rail 200 in the vertical plane. Figure 4 As shown, the guide rail 200a provided on the buttress of the hemispherical dome is arranged along the curved surface of the hemispherical dome, and the suspension lifting device 100 performs lifting and lowering motion along the guide rail 200a on the curved surface of the buttress of the hemispherical dome.

[0034] Ginseng Figure 1 As shown, in this embodiment, the prestressed tension suspension lifting device 100 includes: a suspension shaft 1, a cantilever mechanism 4 configured at both ends of the suspension shaft 1 to suspend a tensioning device (not shown), and a power mechanism 2 configured at both sides of the suspension shaft 1; the suspension shaft 1 is parallel to the horizontal plane H, and the cantilever mechanism 4 is configured in two groups and is respectively configured at both ends of the axial direction of the suspension shaft 1. The power mechanism 2 provides power to drive the suspension shaft 1 and the cantilever mechanism 4 configured at the end of the suspension shaft 1 and suspending the tensioning device (such as a jack) to perform lifting and lowering movements along the guide rail 81. The cantilever mechanism 4 is configured in two groups and is respectively configured at both ends of the axial direction of the suspension shaft 1. The cantilever mechanism 4 is used to suspend the tensioning device to drive the tensioning device to move to the working position.

[0035] Ginseng Figure 1 and Figure 5 As shown, preferably, the suspension lifting device 100 includes two sets of power mechanisms 2, and the two sets of power mechanisms 2 are symmetrically arranged along the axis P of the suspension weight shaft 1. During the lifting process of the suspension lifting device 100, the two symmetrically arranged sets of power mechanisms 2 work together to drive the suspension weight shaft 1 to perform lifting and lowering movements along the guide rail 200, and can evenly share the load, improve the balance of the suspension lifting device 100, and ensure that the suspension lifting device 100 rises or falls smoothly.

[0036] Ginseng Figure 1 As shown, the cantilever mechanism 4 includes: a first rotating cantilever 41 rotating in a first horizontal plane H1, a second rotating cantilever 43 arranged on the first rotating cantilever 41 and rotating in a second horizontal plane H2, and a suspension device 45 arranged on the second rotating cantilever 43 and suspending the tensioning device; the first rotating cantilever 41 rotates in the first horizontal plane H1 and supports the second rotating cantilever 43 to rotate in the second horizontal plane H2, so as to drive the suspension device 45 to suspend the tensioning device and move it to a desired position, so that the tensioning device can cover a larger working area.

[0037] Ginseng Figures 2 to 4 As shown, the first rotating cantilever 41 includes: a first mounting seat 411 and a first cantilever 42, a first slewing bearing 412 clamped between the first mounting seat 411 and the first cantilever 42, the first cantilever 42 rotates relative to the first mounting seat 411 in the first horizontal plane H1 through the first slewing bearing 412, a first slewing gear 413 coaxially sleeved on the outer periphery of the first slewing bearing 412, at least two second driving motors 414 arranged at equal intervals on the first mounting seat 411, and a first driving gear 415 arranged on the output shaft of the second driving motor 414 and meshing with the first slewing gear 413. The first cantilever 42 and the second cantilever 44 are located on two different parallel planes, and the first horizontal plane H1 and the second horizontal plane H2 are parallel to each other to ensure the overall leveling accuracy of the cantilever mechanism 4. The second driving motor 414 drives the first rotating gear 413 to rotate through the first driving gear 415 on its output shaft. The first rotating gear 413 drives the first cantilever 42 to rotate in the first horizontal plane H1 through the first rotating bearing 412 to adjust the position of the second rotating cantilever 43 and the suspension device 45, so that the suspension device 45 suspends the tensioning device and moves it to the desired position, so that the tensioning device can cover a larger working area and increase the operating range of the suspension lifting device 100.

[0038] In this embodiment, at least two second drive motors 414 are arranged at equal intervals on the first mounting seat 411, and the output shaft of each second drive motor 414 is provided with a first driving gear 415, and the first driving gear 415 is meshed with the first rotary gear 413. Compared with the construction crank arm device dedicated to nuclear power plants in the prior art, when a single first rotary motor drives the first rotary arm to rotate, the load is concentrated on one side of the motor, which easily leads to uneven distribution of the rotation driving force, thereby causing unilateral wear of the first rotary outer teeth, affecting the service life. The suspension lifting device 100 drives the first rotary gear 413 to rotate through at least two second drive motors 414, so that the load can be evenly distributed to multiple second drive motors 414, so as to avoid concentrating the load on a single second drive motor 414, and make the rotation driving force of multiple second drive motors 414 more evenly transmitted to the first rotary gear 413, so as to reduce the unilateral wear of the first rotary gear 413 and extend the service life of the first rotary gear 413. Furthermore, due to the narrow space in the construction environment, when the first rotating motor in the prior art collides with the wall and is damaged, the first rotating arm cannot rotate, posing a safety hazard. In this embodiment, at least two second drive motors 414 are arranged at equal intervals. Even if one of the second drive motors 414 fails, the other second drive motors 414 can still continue to work, thereby ensuring the function of the suspension lifting equipment 100 to control the rotation of the first rotating cantilever 41, thereby improving the reliability and safety of the suspension lifting equipment 100.

[0039] Ginseng Figure 2 As shown, in this embodiment, preferably, the first rotating cantilever 41 includes two second drive motors 414, and the two second drive motors 414 are symmetrically arranged on the first mounting seat 411. The two second drive motors 414 are symmetrically arranged on the first mounting seat 411, so that the load can be evenly distributed on the two second drive motors 414. Since the load is evenly distributed, the load borne by a single second drive motor 414 is significantly reduced, and the local stress concentration of related components such as the first driving gear 415 and the first rotating gear 413 is reduced, and the service life of related components such as the first driving gear 415 and the first rotating gear 413 is extended. By the two second drive motors 414 working at the same time, a more uniform rotational driving force output is provided, so that the vibration of related components such as the first rotating gear 413 during the rotation process can be reduced, so that the rotation of the first cantilever 42 is more stable, and the rotation accuracy of the first cantilever 42 is improved.

[0040] Ginseng Figures 1 to 3As shown, the second rotating cantilever 43 includes: a second cantilever 44 equipped with a suspension device 45, a second mounting seat 431 arranged on the first cantilever 42, a second slewing bearing 432 clamped between the second mounting seat 431 and the second cantilever 44, the second cantilever 44 rotates relative to the second mounting seat 431 in the second horizontal plane H2 through the second slewing bearing 432, a second slewing gear 433 coaxially sleeved on the outer periphery of the second slewing bearing 432, at least two third driving motors 434 arranged at equal intervals on the second mounting seat 431, and a second driving gear 435 arranged on the output shaft of the third driving motor 434 and meshing with the second slewing gear 433; the suspension device 45 suspends the tensioning device and moves along the length direction of the second cantilever 44. The third driving motor 434 drives the second rotating gear 433 to rotate through the second driving gear 435 on its output shaft, and the second rotating gear 433 drives the second cantilever 44 to rotate in the second horizontal plane H2 through the second rotating bearing 432 to adjust the position of the suspension device 45, so that the suspension device 45 can suspend the tensioning device and move it to the desired position along the length direction of the second cantilever 44, so that the tensioning device can cover a larger working area and increase the operating range of the suspension lifting device 100.

[0041] By arranging at least two third drive motors 434 at equal intervals to drive the second rotating gear 433 to rotate, the load can be evenly distributed to the plurality of third drive motors 434, thereby avoiding the load being concentrated on a single third drive motor 434, and making the rotational driving force of the plurality of third drive motors 434 be transmitted to the second rotating gear 433 more evenly, so as to reduce the unilateral wear of the second rotating gear 433 and extend the service life of the second rotating gear 433. In addition, by arranging at least two third drive motors 434 at equal intervals, even if one of the third drive motors 434 fails, the other third drive motors 434 can still continue to work, thereby ensuring the function of the suspension lifting device 100 to control the rotation of the second cantilever 44, and improving the reliability and safety of the suspension lifting device 100.

[0042] Ginseng Figure 2As shown, in this embodiment, preferably, the second rotating cantilever 43 includes two third drive motors 434, and the two third drive motors 434 are symmetrically arranged on the second mounting seat 431. The load can be evenly distributed on the two third drive motors 434. Since the load is evenly distributed, the load borne by a single third drive motor 434 is significantly reduced, and the local stress concentration of related components such as the second driving gear 435 and the second rotating gear 433 is reduced, and the service life of related components such as the second driving gear 435 and the second rotating gear 433 is extended. By the two third drive motors 434 working at the same time, a more uniform rotational driving force output is provided, so that the vibration of related components such as the second rotating gear 433 during the rotation process can be reduced, so that the rotation of the second cantilever 44 is more stable, and the rotation accuracy of the second cantilever 44 is improved.

[0043] Ginseng Figure 2 As shown, the prestressed tension suspension lifting device 100 further includes: a reinforcing hoop 8 provided on a portion of the outer periphery of the suspension shaft 1 and connected to the first mounting seat 411. The reinforcing hoop 8 is connected to the first mounting seat 411 by bolts to ensure that the cantilever mechanism 4 is firmly connected to the suspension shaft 1.

[0044] In this embodiment, the longitudinal section of the first cantilever 42 can be square, and a rib plate (not shown) is arranged on the outer side of the bottom of the first cantilever 42 to increase the rigidity and torsion resistance of the square tube, and the longitudinal section of the second cantilever 44 can be "I" shaped. It should be noted that the aforementioned square longitudinal section shape of the first cantilever 42 and the matching mode of the first cantilever 42 and the rib plate and the "I" longitudinal section shape of the second cantilever 44 are only a typical example, and the longitudinal section shapes of the first cantilever 42 and the second cantilever 44 can also include other high-strength, bending and torsion resistant shapes. For example, the rib plate can be combined and arranged inside and / or outside the first cantilever 42 to comprehensively improve the rigidity and torsion resistance of the first cantilever 42, so that the first cantilever 42 can carry a large weight; for example, the second cantilever 44 can be configured as a box beam structure formed by welding two I-beams and allowing the suspension device 45 to move along its length direction, so as to improve the bending and torsion rigidity of the second cantilever 44, so that the second cantilever 44 can carry a large weight.

[0045] Ginseng Figure 5As shown, the power mechanism 2 includes: a crossbar 211, a connection frame 212 disposed at both ends of the crossbar 211 in the length direction, a transmission shaft 22 disposed on both sides of the crossbar 211 and parallel to the suspension shaft 1, the transmission shaft 22 passes through the connection frame 212 and is rotatably connected to the connection frame 212, a first drive motor 23 disposed on the crossbar 211 to drive the transmission shaft 22 to rotate, a power gear 24 coaxially sleeved at both ends of the transmission shaft 22 and meshing with a rack (not shown) formed on the outer side of the guide rail 200 and formed in the connection frame 212, and a plurality of guide wheels 25 symmetrically arranged on the inner side of the connection frame 212 and rotatably connected to the connection frame 212. The guide rail 200 of this embodiment adopts an I-beam structure, and guide grooves (not shown) are formed on both sides of the guide rail 200. Preferably, the power mechanism 2 includes two transmission shafts 22, and the two transmission shafts 22 are symmetrically arranged on the upper and lower sides of the crossbar 211. By starting the first driving motor 23 to drive the transmission shaft 22 to rotate relative to the crossbar 211, the transmission shaft 22 synchronously drives the power gears 24 at both ends to rotate, and the power gears 24 at both ends of the transmission shaft 22 are respectively engaged with the racks on the outside of the guide rail 200, so that the power gears 24 move along the racks, and the guide wheels 25 are respectively located in the guide grooves on both sides of the guide rail 200, and synchronously drive the guide wheels 25 to move along the guide grooves on both sides of the guide rail 200 when the suspension lifting device 100 is lifted or lowered. The guide wheels 25 are rotatably connected to the connection frame 212 through self-lubricating bearings, so that the guide wheels 25 can smoothly run up and down along the guide rail 200. And the symmetrically arranged guide wheels 25 can ensure that the suspension lifting device 100 remains stable during the lifting process, reducing shaking and deviation.

[0046] Ginseng Figure 1 and Figure 5As shown, the prestressed tension suspension lifting device 100 also includes: an anti-falling mechanism 3 configured on the power mechanism 2, a pivoting mechanism 6 that rotatably connects the power mechanism 2 and the suspension shaft 1, and a leveling mechanism 5 configured on the power mechanism 2 to adjust the cantilever mechanism 4 to a horizontal posture. The anti-falling mechanism 3 is configured on the power mechanism 2, and is used to prevent the suspension lifting device 100 from falling out of control in an emergency (such as stalling, falling), so as to ensure the safety of personnel and equipment. The power mechanism 2 is connected to the suspension shaft 1 through the pivoting mechanism 6, so that the power mechanism 2 can drive the suspension shaft 1 to rise and fall along the guide rail 81 through the pivoting mechanism 6. And it is convenient for the leveling mechanism 5 to drive the suspension shaft 1 to rotate along the axis P and relative to the pivoting mechanism 6, and synchronously drive the cantilever mechanism 4 to rotate, so as to adjust the cantilever mechanism 4 and the tensioning device suspended by it to a horizontal posture parallel to the horizontal plane H. When the suspended lifting device 100 climbs to the guide rail 200a of the buttress column of the hemispherical dome, the power mechanism 2 and the suspension shaft 1 are connected by rotating the pivot mechanism 6. The power mechanism 2 can be rotated and the angle can be changed through the pivot mechanism 6, so that the power mechanism 2 can adapt to the curvature change of the guide rail 200a, so that the power mechanism 2 can continue to provide power along the guide rail 200a, avoiding the interruption of power transmission caused by the change of the curvature of the guide rail 200a, and then the power mechanism 2 can be stably lifted and lowered along the guide rail 200a.

[0047] Ginseng Figure 1 and Figure 5 As shown, the pivot mechanism 6 includes: at least two mounting plates 61 sleeved on the suspension shaft 1 and rotatably connected to the suspension shaft 1, and the two ends of the mounting plates 61 in the length direction are penetrated by the transmission shafts 22 close to the two sides of the suspension shaft 1 and are rotatably connected to the transmission shafts 22. The mounting plates 61 are rotatably connected to the suspension shaft 1, so that the mounting plates 61 can support the suspension shaft 1 and the cantilever mechanism 4 to rotate smoothly, which is convenient for the leveling mechanism 5 to drive the suspension shaft 1 to rotate along the axis P relative to the mounting plates 61, so as to adjust the horizontal posture of the cantilever mechanism 4 and the tensioning equipment suspended therefrom, so that the suspension lifting device 100 can adapt to complex construction environments, and improve the adaptability and flexibility of the suspension lifting device 100.

[0048] Ginseng Figure 1 , Figures 3 to 5As shown, the leveling mechanism 5 includes: a support assembly 51, a telescopic unit 52 hinged to the support assembly 51, and a hinge seat 53 sleeved on the outside of the suspension shaft 1 and hinged to the telescopic shaft of the telescopic unit 52. The power mechanism 2 on the top of the suspension shaft 1 is equipped with a support assembly 51; the support assembly 51 includes: a support arm 511 configured on the connection frame 212, and a support seat 512 whose two ends are respectively fixed to the support arm 511 and the cross bar 211 and hinged to the telescopic unit 52. The support arm 511 is configured on the connection frame 212 and is connected to the connection frame 212 by bolts to stably support the telescopic unit 52. The fixed end (not shown) of the telescopic unit 52 is hinged to the support seat 512, and the telescopic rod 521 of the telescopic unit 52 is hinged to the hinge seat 53. The support base 512 provides stable support for the fixed end of the telescopic unit 52, ensuring that the hinge point between the telescopic unit 52 and the support base 512 is stable and reliable, preventing the telescopic unit 52 from loosening or deflecting during the process of driving the telescopic rod 521 to extend or shorten.

[0049] Ginseng Figure 3 As shown, when the suspension lifting device 100 is lifted and lowered along the guide rail 200 of the buttress column of the cylinder, the suspension shaft 1 and the transmission shaft 22 are connected by rotating the mounting plate 61, the telescopic unit 52 drives the telescopic rod 521 to shorten, and the suspension shaft 1 is driven to rotate relative to the mounting plate 61 through the hinge seat 53, so as to synchronously drive the cantilever mechanism 4 to rotate along the axis P of the suspension shaft 1, until the cantilever mechanism 4 and the tensioning device suspended by it are adjusted to Figure 3 The telescopic rod 521 is then held in a horizontal position parallel to the horizontal plane H by the telescopic unit 52. Figure 3 The shortened state shown in the figure is used to control the tensioning device to always maintain a horizontal posture during operation, so that the power mechanism 2 can ensure the construction accuracy of the tensioning device when driving the suspension shaft 1 to move up and down along the guide rail 200.

[0050] The suspension shaft 1 is connected to the transmission shaft 22 by rotation of the mounting plate 61, and the telescopic unit 52 drives the telescopic rod 521 to extend, so as to drive the suspension shaft 1 to rotate relative to the mounting plate 61, so as to synchronously drive the cantilever mechanism 4 to rotate along the axis P of the suspension shaft 1, so as to adjust the cantilever mechanism 4 and the tensioning equipment suspended therefrom to the following: Figure 8 The horizontal posture parallel to the horizontal plane H is shown, so that the cantilever mechanism 4 and the tensioning device suspended therefrom can adapt to the curvature change of the guide rail 200a, and avoid the tensioning device being tilted relative to the horizontal plane H due to the curvature change of the guide rail 200a. Then, the telescopic rod 521 is kept at Figure 8 The extended state shown in the figure is used to control the tensioning equipment to always maintain a horizontal posture during the working process, thereby ensuring that the suspension lifting equipment 100 remains stable and balanced during the climbing process, so as to ensure the construction accuracy of the tensioning equipment.

[0051] Ginseng Figure 4As shown in the figure, when the suspension lifting device 100 climbs to the guide rail 200a of the buttress column of the hemispherical dome, the cantilever mechanism 4 and the tensioning device suspended therefrom will tilt relative to the horizontal plane H and change to a tilted posture (this state is not shown), and the telescopic unit 52 drives the telescopic rod 521 to extend, and drives the suspension shaft 1 to rotate relative to the hanging seat plate 61 through the hinge seat 53, so as to synchronously drive the cantilever mechanism 4 to rotate along the axis P of the suspension shaft 1, so as to adjust the cantilever mechanism 4 and the tensioning device suspended therefrom to the following state: Figure 4 The horizontal posture parallel to the horizontal plane H is shown, so that the cantilever mechanism 4 and the tensioning device suspended therefrom can adapt to the curvature change of the guide rail 200a, and avoid the tensioning device being tilted relative to the horizontal plane H due to the curvature change of the guide rail 200a. Then, the telescopic rod 521 is kept at Figure 4 , so as to control the tensioning equipment to always maintain a horizontal posture during the working process, thereby ensuring that the suspension lifting equipment 100 remains stable and balanced during the climbing process, so as to ensure the construction accuracy of the tensioning equipment. The reaction force generated during the extension or shortening of the telescopic rod 521 driven by the telescopic unit 52 will be evenly dispersed to the support arm 511 and the crossbar 211 through the support seat 512, thereby reducing local stress concentration, avoiding material fatigue and damage caused by local stress concentration, and extending the service life.

[0052] It should be noted that the telescopic unit 52 can be configured as a telescopic device such as a hydraulic cylinder, an electric push rod, a pneumatic cylinder or an electric screw, as long as it can drive the suspension shaft 1 to rotate along its axis P through a telescopic action to adjust the inclination angle of the cantilever mechanism 4 and its suspended tensioning equipment relative to the horizontal plane H, so as to adjust the cantilever mechanism 4 and its suspended tensioning equipment to a horizontal posture parallel to the horizontal plane H as shown in Figure *.

[0053] Ginseng Figure 6 and Figure 7 As shown, the anti-fall mechanism 3 includes: a housing 31 arranged on the crossbar 211 and penetrated by the transmission shaft 22, an anti-fall device 32 arranged on the housing 31, and a transmission assembly arranged in the housing 31 and connected to the anti-fall device 32 to limit the rotation of the transmission shaft 22. When an emergency occurs in the suspension lifting device 100, the anti-fall device 32 quickly locks the transmission assembly to prevent the transmission shaft 22 from rotating, and at the same time prevents the power gears 24 at both ends of the transmission shaft 22 from continuing to move along the guide rail 200, so as to prevent the suspension lifting device 100 from falling out of control. The transmission assembly includes: a transmission gear 33 coaxially sleeved on the transmission shaft 22, and a speed-increasing gear 35 arranged in the housing 31 and rotatably connected to the housing 31; the anti-fall device 32 is constructed with a brake gear 34 meshing with the transmission gear 33. The speed-increasing gear 35 is formed between the transmission gear 33 and the brake gear 34 and meshes with the transmission gear 33 and the brake gear 34.

[0054] Under normal working conditions, the first driving motor 23 drives the power gear 24 to move along the guide rail 200 through the transmission shaft 22 to drive the suspension lifting device 100 to move up and down, and the transmission shaft 22 synchronously drives the transmission gear 33 to rotate, so that the transmission gear 33 drives the speed-increasing gear 35 to drive the brake gear 34 to rotate. When an emergency occurs in the suspension lifting device 100, the transmission gear 33 drives the speed-increasing gear 35 to drive the brake gear 34 to rotate rapidly, and the anti-fall device 32 is activated when detecting the emergency. The anti-fall device 32 quickly locks the brake gear 34. Since the brake gear 34 is meshed with the speed-increasing gear 35, the speed-increasing gear 35 is limited to rotate through the brake gear 34, thereby preventing the transmission gear 33 and the transmission shaft 22 from rotating, and at the same time preventing the power gears 24 at both ends of the transmission shaft 22 from continuing to move along the guide rail 200, so as to achieve simultaneous locking of both sides of the transmission shaft 22 during emergency braking, and prevent the suspension lifting device 100 from falling out of control.

[0055] The speed-increasing gear 35 can ensure the synchronous meshing between the transmission gear 33 and the brake gear 34, avoid slipping or incomplete meshing between the transmission gear 33 and the brake gear 34 during emergency braking, and make the emergency braking process smoother, which can reduce the impact during emergency braking. In addition, the speed-increasing gear 35 can increase the rotation speed of the brake gear 34 relative to the transmission gear 33, thereby accelerating the response speed of the anti-fall device 32 to detect the stall of the transmission shaft 22, so as to quickly lock the brake gear 34 to prevent the transmission shaft 22 from rotating, further reduce the uncontrolled falling distance of the suspension lifting device 100, and make emergency braking more rapid and effective. Preferably, two groups of speed-increasing gears 35 are symmetrically arranged on both sides of the brake gear 34. When the anti-fall mechanism 3 is started, it can ensure that the braking effect on both sides of the transmission gear 33 during emergency braking is uniform and consistent, thereby improving the stability during emergency braking.

[0056] Ginseng Figure 7 As shown, illustratively, the fall arrester 32 is constructed with a sensing shaft 321 extending into the housing 31, and the brake gear 34 is fixedly arranged on the outside of the sensing shaft 321. The sensing shaft 321 rotates synchronously with the brake gear 34. The fall arrester 32 is activated when an emergency is detected, and the brake gear 34 is prevented from rotating by quickly locking the sensing shaft 321. It should be noted that the specific structure of the fall arrester 32 in this embodiment is a prior art, and can be a mechanical, electromagnetic or other type of braking device, which will not be described in detail here, as long as it can quickly lock the sensing shaft 321 to prevent the brake gear 34 from rotating when an emergency is detected.

[0057] Ginseng Figure 1As shown, in this embodiment, preferably, the anti-fall mechanism 3 is arranged at the power mechanism 2 at the bottom of the suspension shaft 1, and the transmission gear 33 is sleeved on the outside of the transmission shaft 22 at the bottom of the crossbar 211. By arranging the anti-fall mechanism 3 at the power mechanism 2 at the bottom of the suspension shaft 1, the braking mechanism can be quickly triggered and the braking gear 34 can be locked in an emergency to prevent the transmission shaft 22 from rotating, thereby reducing the uncontrolled falling distance of the suspension lifting device 100. In addition, the available space of the suspension lifting device 100 can be fully utilized to avoid increasing the overall volume and maintain the compactness of the device.

[0058] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0059] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A prestressed tension suspension lifting equipment, characterized in that: include: A suspension shaft, a cantilever mechanism disposed at both ends of the suspension shaft for suspending a tensioning device, and a power mechanism disposed at both sides of the suspension shaft; The cantilever mechanism comprises: a first rotating cantilever rotating in a first horizontal plane, a second rotating cantilever arranged on the first rotating cantilever and rotating in a second horizontal plane, and a suspension device arranged on the second rotating cantilever and suspending the tensioning device; The first rotating cantilever includes: a first mounting seat and a first cantilever, a first slewing bearing clamped between the first mounting seat and the first cantilever, the first cantilever rotates relative to the first mounting seat in a first horizontal plane through the first slewing bearing, a first slewing gear coaxially sleeved on the outer periphery of the first slewing bearing, at least two second driving motors equally spaced apart on the first mounting seat, and a first driving gear disposed on an output shaft of the second driving motor and meshing with the first slewing gear.

2. The prestressed tension suspension lifting equipment according to claim 1, characterized in that: The two second driving motors are symmetrically arranged on the first mounting seat.

3. The prestressed tension suspension lifting equipment according to claim 1, characterized in that: The second rotating cantilever comprises: a second cantilever configured with the suspension device, a second mounting seat configured on the first cantilever, a second slewing bearing clamped between the second mounting seat and the second cantilever, the second cantilever rotates relative to the second mounting seat in a second horizontal plane through the second slewing bearing, a second slewing gear coaxially sleeved on the outer periphery of the second slewing bearing, at least two third driving motors equally spaced and arranged on the second mounting seat, and a second driving gear arranged on the output shaft of the third driving motor and meshing with the second slewing gear; The suspension device suspends the tensioning device and moves along the length direction of the second cantilever.

4. The prestressed tension suspension lifting equipment according to claim 3, characterized in that: The two third driving motors are symmetrically arranged on the second mounting seat.

5. The prestressed tension suspension lifting equipment according to claim 1, characterized in that: The prestressed tension suspension lifting equipment also includes: a reinforcing hoop which is arranged on the outer periphery of the suspension shaft portion and connected to the first mounting seat.

6. The prestressed tension suspension lifting equipment according to claim 1, characterized in that: The power mechanism includes: a cross bar, a connecting frame arranged at both ends of the cross bar in the length direction, a transmission shaft arranged on both sides of the cross bar and parallel to the suspension shaft, the transmission shaft passes through the connecting frame and is rotatably connected to the connecting frame, a first drive motor arranged on the cross bar to drive the transmission shaft to rotate, a power gear coaxially sleeved at both ends of the transmission shaft and meshing with a rack formed on the outside of the guide rail and formed in the connecting frame, and a plurality of guide wheels symmetrically arranged on the inner side of the connecting frame and rotatably connected to the connecting frame.

7. The prestressed tension suspension lifting equipment according to claim 6, characterized in that: The prestressed tension suspension lifting equipment also includes: an anti-falling mechanism configured on the power mechanism, a pivot mechanism rotationally connecting the power mechanism and the suspension shaft, and a leveling mechanism configured on the power mechanism to adjust the cantilever mechanism to a horizontal posture.

8. The prestressed tension suspension lifting equipment according to claim 7, characterized in that: The anti-falling mechanism comprises: a shell arranged on the connecting frame and penetrated by the transmission shaft, an anti-falling device arranged on the shell, and a transmission component arranged inside the shell and connected to the anti-falling device to limit the rotation of the transmission shaft.

9. The prestressed tension suspension lifting equipment according to claim 7, characterized in that: The pivot mechanism includes: at least two mounting plates sleeved on the outside of the suspension shaft and rotatably connected to the suspension shaft, and both ends of the mounting plates in the length direction are penetrated by transmission shafts close to both sides of the suspension shaft and rotatably connected to the transmission shafts.

10. The prestressed tension suspension lifting equipment according to claim 7, characterized in that: The leveling mechanism comprises: a support assembly arranged on the connecting frame, a telescopic unit hinged to the support assembly, and a hinge seat sleeved on the outside of the suspension shaft and hinged to the telescopic shaft of the telescopic unit.

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