Prestress tension anti-falling lifting device

Abstract

The invention provides a prestress tension anti-falling lifting device. The prestress tension anti-falling lifting device comprises a hanging load shaft, a power mechanism and an anti-falling mechanism arranged on the power mechanism. The power mechanism comprises a connecting frame, transmission shafts arranged on the two sides of the connecting frame and parallel to the load hanging shaft, a first driving motor arranged on the connecting frame to drive the transmission shafts to rotate and power gears coaxially arranged at the two ends of the transmission shafts in a sleeving mode and meshed with the guide rails, wherein the transmission shafts are rotationally connected with the connecting frame. 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 gear arranged in the shell and coaxially arranged on the transmission shaft in a sleeving mode. The falling protector is provided with a brake gear which is meshed with the transmission gear to limit rotation of the transmission shaft. Through the anti-falling mechanism, the two ends of the transmission shaft are locked at the same time during emergency braking, and the lifting device is prevented from being out of control and falling.

Description

Technical Field

[0001] The invention relates to the technical field of building construction machinery, and in particular to a prestressed tensioning anti-falling 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 CN211548700U discloses a prestressed construction platform for an inner factory building, including two guide rails installed along the facade of the inner factory building buttress column, on which a construction operation platform is installed through a lifting drive device, which moves up and down along the guide rails; the guide rails are also installed with a hoist device that slides along them and is independent of the construction operation platform. In order to cope with the emergency situation of stalling or falling of the construction platform, the inner factory building prestressed construction platform in the above-mentioned prior art is also equipped with a fall arrester on the guide rail below the lifting drive device and the hoist device. When the overspeed is detected to reach the rated setting value, the hydraulically controlled rail locker and the buffer mechanism are activated, and the construction operation platform is locked by the rack on the guide rail to stop sliding down.

[0005] However, two sets of fall arresters are arranged under the hoist device in the above-mentioned prior art on the guide rails on both sides, and the two sets of fall arresters are independent structures and work independently, which may easily lead to inconsistent start-up of the platform during emergency braking (for example, one side stops first and the other side continues to slide), resulting in uneven force on the platform, causing the platform to tilt or structural damage, and posing a great safety risk.

[0006] In view of this, it is necessary to improve the prestressed construction platform of the internal factory building 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 anti-fall lifting device, which is used to solve the many defects existing in the prestressed construction platform of the internal factory building in the prior art, especially to achieve simultaneous locking of both ends of the transmission shaft during emergency braking to prevent the lifting device from falling out of control.

[0008] To achieve the above-mentioned object, the present invention provides a prestressed tension anti-fall lifting device, comprising: a hanging weight shaft, a power mechanism arranged on both sides of the hanging weight shaft, and an anti-fall mechanism arranged on the power mechanism;

[0009] The power mechanism comprises: a connecting frame, a transmission shaft arranged on both sides of the connecting frame and parallel to the suspension shaft, the transmission shaft is rotatably connected to the connecting frame, a first driving motor arranged on the connecting frame to drive the transmission shaft to rotate, and a power gear coaxially sleeved on both ends of the transmission shaft and meshing with a rack formed on the outer side of the guide rail;

[0010] The anti-fall mechanism comprises: a housing configured on the connecting frame and penetrated by the transmission shaft, an anti-fall device configured on the housing, and a transmission gear disposed inside the housing and coaxially sleeved on the transmission shaft;

[0011] The fall arrester is configured with a brake gear meshed with the transmission gear to limit the rotation of the transmission shaft.

[0012] As a further improvement of the present invention, the anti-falling mechanism is configured on the power mechanism at the bottom of the suspension shaft, and the transmission gear is sleeved on the outside of the transmission shaft at the bottom of the connecting frame.

[0013] As a further improvement of the present invention, the anti-fall mechanism also includes: a speed-increasing gear disposed within the shell and rotatably connected to the shell, the speed-increasing gear being formed between the transmission gear and the braking gear and meshing with the transmission gear and the braking gear.

[0014] As a further improvement of the present invention, the connecting frame comprises: a cross bar for mounting the first driving motor, a connecting frame arranged at both ends of the cross bar in the length direction and penetrated by the transmission shaft, the transmission shaft is rotatably connected to the connecting frame, and the power gear is formed in the connecting frame;

[0015] The power mechanism further comprises: a plurality of guide wheels symmetrically arranged on the inner side wall of the connection frame and rotatably connected to the connection frame.

[0016] As a further improvement of the present invention, the transmission gear is constructed to have a sleeve portion formed on the outside of the transmission shaft, and the sleeve portion extends radially outward to form a gear portion meshing with the brake gear;

[0017] The inner peripheral wall of the sleeve portion is recessed to form a limiting groove, and the transmission shaft is constructed with a transmission block extending into the limiting groove.

[0018] As a further improvement of the present invention, the anti-fall mechanism also includes: a rotating support member coaxially sleeved on the sleeve portion, the inner ring of the rotating support member is fixedly connected to the sleeve portion, and an end cover is arranged on the shell and fixedly connected to the outer ring of the rotating support member, the end cover is penetrated by the transmission shaft and radially separated from the transmission shaft.

[0019] As a further improvement of the present invention, the prestressed tensioning anti-falling lifting device also includes: a cantilever mechanism arranged at both ends of the suspension shaft to suspend the tensioning equipment, a leveling mechanism arranged at the power mechanism to adjust the cantilever mechanism to a horizontal posture, and a pivot mechanism rotatably connecting the power mechanism and the suspension shaft.

[0020] As a further improvement of the present invention, the cantilever mechanism includes: a first drive component, a first cantilever controlled by the first drive component and rotating in a first horizontal plane, a second drive component arranged at one end of the first cantilever away from the first drive component, a second cantilever controlled by the second drive component and rotating in a second horizontal plane, and a suspension device arranged at the second cantilever and suspending the tensioning device to move along the length direction of the second cantilever.

[0021] 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 rod of the telescopic unit.

[0022] 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.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: when an emergency occurs in the prestressed tensioning anti-fall lifting device, the transmission gear drives the brake gear to rotate rapidly, the anti-fall device is activated when detecting the emergency situation, and the anti-fall device quickly locks the brake gear. Since the brake gear is meshed with the transmission gear, the rotation of the transmission gear is limited by the brake gear, thereby preventing the transmission shaft from rotating, and at the same time preventing the power gears at both ends of the transmission shaft from continuing to move along the rack on the outside of the guide rail, so as to achieve simultaneous locking of both ends of the transmission shaft during emergency braking, and prevent the prestressed tensioning anti-fall lifting device from falling out of control, thereby solving the problem of inconsistent activation of the anti-fall devices on both sides of the guide rails during emergency braking in the hoist device in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the prestressed tension anti-fall lifting device disclosed by the present invention;

[0025] Figure 2 It is a front view of the connection between the power mechanism and the suspension shaft, wherein the anti-fall mechanism is arranged on the power mechanism at the bottom of the suspension shaft;

[0026] Figure 3 for Figure 2 A cross-sectional view of the transmission shaft and the transmission gear cut along the AA axis, wherein the transmission gear is meshed with the brake gear;

[0027] Figure 4 It is a cross-sectional view of a transmission shaft and a transmission gear in another embodiment, wherein a speed increasing gear is meshed between the transmission gear and the brake gear;

[0028] Figure 5 for Figure 4 A cross-sectional view of the transmission shaft and transmission gear cut along the BB axis;

[0029] Figure 6 It is a partial schematic diagram of the cantilever mechanism being arranged at the end of the suspension shaft;

[0030] Figure 7 A side view of a guide rail of a prestressed tensioned anti-fall lifting device located on the outer facade of a cylinder buttress column of a containment vessel;

[0031] Figure 8 A side view of the guide rails for the prestressed tensioned fall arrest hoist to climb to the outer facade of the hemispherical dome buttresses of the containment vessel;

[0032] Fig. 9 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 formed on the outer side of the guide rail. DETAILED DESCRIPTION

[0033] 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.

[0034] It is particularly important to note that in the following embodiments, the term "axial" means Figure 2 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.

[0035] Please refer to Figures 1 to 9 A specific implementation of a prestressed tensioned anti-falling lifting device (hereinafter referred to as "anti-falling lifting device 100") is disclosed.

[0036] 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 outer 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). Fig. 9 As shown, two guide rails 200 are arranged at intervals along the lateral direction on the outer surface of the buttress column. Figure 7 As shown, the guide rail 200 of the buttress column arranged on the cylinder is perpendicular to the horizontal plane H, and the anti-falling lifting device 100 moves up and down along the guide rail 200 in the vertical plane. Figure 8 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 anti-fall lifting device 100 performs lifting and lowering motion along the guide rail 200a on the curved surface of the buttress of the hemispherical dome.

[0037] Ginseng Figure 1 As shown, in this embodiment, the anti-fall lifting device 100 includes: a hanging weight shaft 1, a power mechanism 2 disposed on both sides of the hanging weight shaft 1, and an anti-fall mechanism 3 disposed on the power mechanism 2. The hanging weight shaft 1 is parallel to the horizontal plane H. The power mechanism 2 provides power to drive the hanging weight shaft 1 to be lifted and lowered along the guide rail 200. The anti-fall mechanism 3 is disposed on the power mechanism 2, and is used to prevent the anti-fall lifting device 100 from falling out of control in an emergency (such as stalling, falling), so as to ensure the safety of personnel and the device.

[0038] Ginseng Figure 1As shown, preferably, the anti-fall 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 shaft 1. During the lifting and lowering process of the anti-fall lifting device 100, the two symmetrically arranged sets of power mechanisms 2 work together to drive the suspension shaft 1 to be lifted and lowered along the guide rail 200, and the load can be evenly shared, thereby improving the balance of the anti-fall lifting device 100 and ensuring that the anti-fall lifting device 100 rises or falls smoothly.

[0039] Ginseng Figures 2 to 4 As shown, the power mechanism 2 includes: a connecting frame 21, a transmission shaft 22 arranged on both sides of the connecting frame 21 and parallel to the suspension shaft 1, the transmission shaft 22 is rotatably connected to the connecting frame 21, a first drive motor 23 arranged on the connecting frame 21 to drive the transmission shaft 22 to rotate, and a power gear 24 coaxially sleeved on both ends of the transmission shaft 22 and meshing with a rack (not shown) formed on the outer side of the guide rail 200. The connecting frame 21 serves as the main frame of the power mechanism 2, and is used to support and fix other components such as the transmission shaft 22 and the first drive motor 23, and the connecting frame 21 is arranged horizontally. 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 connecting frame 21. The transmission shaft 22 is driven by the first driving motor 23 to rotate relative to the connecting frame 21, and the transmission shaft 22 synchronously drives the power gears 24 at both ends to rotate. 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 on the outside of the guide rail 200, so as to drive the suspension shaft 1 to move up and down along the guide rail 200.

[0040] The anti-fall mechanism 3 includes: a housing 31 disposed on the connecting frame 21 and penetrated by the transmission shaft 22, an anti-fall device 32 disposed on the housing 31, and a transmission gear 33 disposed inside the housing 31 and coaxially sleeved on the transmission shaft 22; the anti-fall device 32 is constructed with a brake gear 34 that meshes with the transmission gear 33 to limit the rotation of the transmission shaft 22. The transmission gear 33 is mounted on the transmission shaft 22 and meshes with the brake gear 34. Under normal working conditions, the first drive motor 23 drives the power gear 24 to move along the rack outside the guide rail 200 through the transmission shaft 22 to drive the suspension shaft 1 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 brake gear 34 to rotate. When an emergency occurs in the anti-fall lifting device 100, the transmission gear 33 drives the brake gear 34 to rotate rapidly. The anti-fall device 32 is activated when detecting the emergency situation, and the anti-fall device 32 quickly locks the brake gear 34. Since the brake gear 34 is meshed with the transmission gear 33, the transmission gear 33 is limited to rotate by the brake gear 34, thereby preventing 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 rack on the outside of the guide rail 200, so as to achieve simultaneous locking of both ends of the transmission shaft 22 during emergency braking, and prevent the anti-fall lifting device 100 from falling out of control, thereby solving the problem of inconsistent activation of the anti-fall devices on the two sides of the guide rails during emergency braking in the hoist device in the prior art, and reducing the risk of uneven force, tilting or structural damage to the anti-fall lifting device 100.

[0041] Exemplarily, the fall arrester 32 is constructed with a sensing shaft 321 extending into the shell 31, and the brake gear 34 is fixed 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 situation is detected, and the brake gear 34 is prevented from rotating by quickly locking the sensing shaft 321.

[0042] It should be noted that the specific structure of the fall arrester 32 in this embodiment is the prior art, and can be a mechanical, electromagnetic or other type of braking device, which will not be elaborated here. As long as it can quickly lock the sensing shaft 321 to prevent the braking gear 34 from rotating when an emergency situation is detected, it can be used.

[0043] Ginseng Figure 2 and Figure 3 As shown, in this embodiment, preferably, the anti-fall mechanism 3 is arranged at the power mechanism 2a at the bottom of the suspension shaft 1, and the transmission gear 33 is sleeved on the outside of the transmission shaft 22a at the bottom of the connecting frame 21. By arranging the anti-fall mechanism 3 at the power mechanism 2a 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 anti-fall lifting device 100. In addition, the available space of the anti-fall lifting device 100 can be fully utilized to avoid increasing the overall volume and maintain the compactness of the device.

[0044] Ginseng Figure 4 As shown, in this embodiment, preferably, the anti-fall mechanism 3 also includes: a speed-increasing gear 35 which is internally arranged in the housing 31 and is rotatably connected to the housing 31, and 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. The speed-increasing gear 35 can ensure the synchronous meshing between the transmission gear 33 and the brake gear 34, avoid the situation of slipping or incomplete meshing between the transmission gear 33 and the brake gear 34 during the emergency braking process, and make the emergency braking process smoother to reduce the impact during the emergency braking. And 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 anti-fall lifting device 100, and make the 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 activated, it can ensure that the braking effect on both sides of the transmission gear 33 during emergency braking is uniform, thereby improving the stability during emergency braking.

[0045] Ginseng Figure 2 and Figures 7 to 9 As shown, the connecting frame 21 includes: a crossbar 211 for installing the first drive motor 23, a connecting frame 212 arranged at both ends of the crossbar 211 in the length direction and penetrated by the transmission shaft 22, the transmission shaft 22 is rotatably connected to the connecting frame 212, and the power gear 24 is formed in the connecting frame 212; the power mechanism 2 also includes: a plurality of guide wheels 25 symmetrically arranged on the inner side wall of the connecting frame 212 and rotatably connected to the connecting frame 212. The guide rail 200 of this embodiment adopts an I-beam structure, and guide grooves (not marked) are formed on both sides of the guide rail 200. 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 anti-fall lifting device 100 is lifted or lowered. The guide wheels 25 are rotatably connected to the connecting frame 212 through self-lubricating bearings, so that the guide wheels 25 can smoothly run up and down along the guide rail 200. And through the symmetrically arranged guide wheels 25, it can be ensured that the anti-fall lifting device 100 remains stable during the lifting process, reducing shaking and deviation.

[0046] Ginseng Figure 4 and Figure 5As shown, the transmission gear 33 is constructed to form a sleeve portion 331 formed on the outside of the transmission shaft 22, and the sleeve portion 331 extends radially outward to form a gear portion 332 meshed with the brake gear 34; the inner peripheral wall of the sleeve portion 331 is recessed to form a limit groove 3311, and the transmission shaft 22 is constructed to form a transmission block 221 extending into the limit groove 3311. The cooperation between the transmission block 221 and the limit groove 3311 makes the connection between the transmission shaft 22 and the transmission gear 33 more secure, so as to prevent the transmission shaft 22 and the transmission gear 33 from loosening or slipping during the rotation process. In addition, when the anti-fall device 32 is started, the brake gear 34 is meshed with the gear portion 332, so that the rotation of the brake gear 34 can be accurately transmitted to the transmission gear 33 to prevent the transmission shaft 22 from rotating, thereby ensuring the timeliness of the brake gear 34 braking the transmission shaft 22, and avoiding the increase of the falling distance of the anti-fall lifting device 100 due to untimely braking.

[0047] Ginseng Figure 5 As shown, the anti-fall mechanism 3 also includes: a rotating support member 36 coaxially sleeved on the sleeve portion 331, the inner ring of the rotating support member 36 is fixedly connected to the sleeve portion 331, and an end cover 37 is arranged on the housing 31 and fixedly connected to the outer ring of the rotating support member 36, and the end cover 37 is penetrated by the transmission shaft 22 and is radially separated from the transmission shaft 22. The rotating support member 36 (such as a bearing) is used to support the transmission gear 33 to rotate stably on the transmission shaft 22. The end cover 37 is used to fix the outer ring of the rotating support member 36 to enhance the stability of the overall structure of the anti-fall mechanism 3 and prevent the transmission gear 33 from shaking or deflecting when rotating at high speed. The transmission shaft 22 and the end cover 37 are radially separated to reduce unnecessary friction.

[0048] Ginseng Figure 1 and Figure 6 As shown, the anti-fall lifting device 100 also includes: a cantilever mechanism 4 configured at both ends of the suspension shaft 1 to suspend a tensioning device (not shown), a leveling mechanism 5 configured at the power mechanism 2 to adjust the cantilever mechanism 4 to a horizontal posture, and a pivot mechanism 6 that rotatably connects the power mechanism 2 and the suspension shaft 1. The cantilever mechanism 4 is configured with 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 required working position. The power mechanism 2 is connected to the suspension shaft 1 through the pivot mechanism 6, so that the power mechanism 2 can drive the suspension shaft 1 to rise and fall along the guide rail 200 through the pivot 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 pivot 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.

[0049] When the anti-fall lifting device 100 is lifted and lowered along the guide rail 200 of the buttress column of the cylinder, the power mechanism 2 and the suspension shaft 1 are connected by the pivot mechanism 6, and the leveling mechanism 5 can drive the suspension shaft 1 to rotate relative to the pivot mechanism 6, 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 therefrom are adjusted to Figure 7 The horizontal posture parallel to the horizontal plane H is shown in the figure, and the tensioning equipment is controlled to always maintain a horizontal posture during the working process through the leveling mechanism 5, so that the power mechanism 2 ensures the construction accuracy of the tensioning equipment when driving the suspension shaft 1 to move up and down along the guide rail 200.

[0050] When the anti-fall 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 the pivot mechanism 6, and the power mechanism 2 can be rotated and the angle changes 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 curvature change of the guide rail 200a, and then the power mechanism 2 can be stably lifted and lowered along the guide rail 200a. At the same time, when the anti-fall lifting device 100 climbs to the guide rail 200a, the cantilever mechanism 4 and the tensioning equipment suspended by it will tilt relative to the horizontal plane H and change to an inclined posture (this state is not shown), and the power mechanism 2 and the suspension shaft 1 are connected by the pivot mechanism 6, and the leveling mechanism 5 drives the suspension shaft 1 to rotate relative to the pivot mechanism 6, 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 by it to the following state: Figure 8 The horizontal posture shown is parallel to the horizontal plane H, so that the cantilever mechanism 4 and the tensioning equipment suspended by it can adapt to the curvature change of the guide rail 200a, avoid the tensioning equipment from tilting relative to the horizontal plane H due to the curvature change of the guide rail 200a, and control the tensioning equipment to always maintain a horizontal posture during operation through the leveling mechanism 5, thereby ensuring that the anti-fall lifting device 100 remains stable and balanced during the climbing process, so as to ensure the construction accuracy of the tensioning equipment.

[0051] Ginseng Figure 1As shown, the cantilever mechanism 4 includes: a first drive assembly 41, a first cantilever 42 controlled by the first drive assembly 41 and rotating in a first horizontal plane H1, a second drive assembly 43 arranged at one end of the first cantilever 42 away from the first drive assembly 41, a second cantilever 44 controlled by the second drive assembly 43 and rotating in a second horizontal plane H2, and a suspension device 45 (such as an electric hoist) arranged on the second cantilever 44 and suspending the tensioning device to move along the length direction of the second cantilever 44. 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, thereby ensuring the overall leveling accuracy of the cantilever mechanism 4. The first driving component 41 is used to drive the first cantilever 42 and the second driving component 43 configured therein to rotate in the first horizontal plane H1, and the second driving component 43 is used to drive the second cantilever 44 and the suspension device 45 configured therein to rotate in the second horizontal plane H2, and the tensioning device is suspended by the suspension device 45 to move along the length direction of the second cantilever 44 to drive the tensioning device to move to the desired working position, so that the tensioning device can cover a larger working area and increase the operating range of the cantilever mechanism 4.

[0052] Ginseng Figure 1 and Figure 6 As shown, the first driving component 41 includes: a first mounting seat 411, a first slewing bearing 412 with an inner ring fixedly mounted on the first mounting seat 411, an outer ring of the first slewing bearing 412 fixedly mounted on the first cantilever 42, a first slewing gear 413 sleeved on the outer side of the first slewing bearing 412, a second driving motor 414 disposed on the first mounting seat 411, and a first driving gear 415 disposed on the output shaft of the second driving motor 414 and meshing with the first slewing gear 413; the second driving component 43 includes: a second mounting seat 431, a second slewing bearing 432 with an inner ring fixedly mounted on the second mounting seat 431, an outer ring of the second slewing bearing 432 fixedly mounted on the second cantilever 44, a second slewing gear 433 sleeved on the outer side of the second slewing bearing 432, a third driving motor 434 disposed on the second mounting seat 431, and a second driving gear 435 disposed on the output shaft of the third driving motor 434 and meshing with the second slewing gear 433.

[0053] The second driving motor 414 drives the first rotating gear 413 to rotate through the first driving gear 415 on its output shaft, and the first rotating gear 413 drives the first cantilever 42 and the second driving component 43 configured therein to rotate in the first horizontal plane H1 through the first rotating bearing 412. 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 and the suspension device 45 configured therein to rotate in the second horizontal plane H2 through the second rotating bearing 432, so as to drive the tensioning device to move to the desired working position through the suspension device 45, so that the tensioning device can cover a larger working area.

[0054] Ginseng Figure 6 As shown, the cantilever mechanism 4 also includes: a connecting hoop 46 which is sleeved on the outside of the suspension shaft 1 and fits with the outer periphery of the end of the suspension shaft 1. The connecting hoop 46 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.

[0055] Ginseng Figure 2 and Figure 7 and Figure 8 As shown, the leveling mechanism 5 includes: a support assembly 51 configured on the connecting frame 21, 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 rod 521 of the telescopic unit 52. The power mechanism 2 on the top of the suspension shaft 1 is configured with a support assembly 51; the support assembly 51 includes: a support arm 511 configured on the connecting 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 connecting frame 212 and connected to the connecting 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.

[0056] Ginseng Figure 1 and Figure 2As shown, the pivot mechanism 6 includes: at least two mounting plates 61 sleeved on the outside of 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 transmission shafts 22 pass through the two ends of the mounting plates 61 and are rotatably connected to the mounting plates 61 to connect the power mechanism 2 with the suspension shaft 1, so that the power mechanism 2 can transmit power to the suspension shaft 1, so as to drive the suspension shaft 1 and the cantilever mechanism 4 carried by it to perform lifting and lowering movements along the guide rail 200. 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. The telescopic unit 52 drives the telescopic rod 521 to extend or shorten to drive the suspension shaft 1 to rotate along the axis P relative to the mounting plate 61, so as to adjust the cantilever mechanism 4 and its suspended tensioning equipment to a horizontal posture parallel to the horizontal plane H, so that the anti-fall lifting device 100 can adapt to complex construction environments and improve the adaptability and flexibility of the anti-fall lifting device 100.

[0057] When the anti-fall 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, and the telescopic unit 52 drives the telescopic rod 521 to shorten, so as to drive the suspension shaft 1 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 7 The telescopic rod 521 is then held in a horizontal position parallel to the horizontal plane H by the telescopic unit 52. Figure 7 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.

[0058] When the anti-fall lifting device 100 climbs to the guide rail 200a of the buttress column of the hemispherical dome, the cantilever mechanism 4 and the tensioning equipment suspended therefrom will tilt relative to the horizontal plane H and change to an inclined posture (this state is not shown), and the suspension shaft 1 and the transmission shaft 22 are connected by rotating through 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 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 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 8The 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 anti-fall lifting device 100 remains stable and balanced during the climbing process, so as to ensure the construction accuracy of the tensioning equipment.

[0059] 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 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 device relative to the horizontal plane H, so as to adjust the cantilever mechanism 4 and its suspended tensioning device to the following angles: Figure 7 or Figure 8 The horizontal attitude parallel to the horizontal plane H is shown.

[0060] 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.

[0061] 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.

[0062] 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 anti-fall lifting device, characterized in that: include: A suspension shaft, a power mechanism disposed on both sides of the suspension shaft, and an anti-fall mechanism disposed on the power mechanism; The power mechanism comprises: a connecting frame, a transmission shaft arranged on both sides of the connecting frame and parallel to the suspension shaft, the transmission shaft is rotatably connected to the connecting frame, a first driving motor arranged on the connecting frame to drive the transmission shaft to rotate, and a power gear coaxially sleeved on both ends of the transmission shaft and meshing with a rack formed on the outer side of the guide rail; The anti-fall mechanism comprises: a housing configured on the connecting frame and penetrated by the transmission shaft, an anti-fall device configured on the housing, and a transmission gear disposed inside the housing and coaxially sleeved on the transmission shaft; The fall arrester is configured with a brake gear meshed with the transmission gear to limit the rotation of the transmission shaft.

2. The prestressed tension anti-fall lifting device according to claim 1 is characterized in that: The anti-falling mechanism is arranged on the power mechanism at the bottom of the suspension shaft, and the transmission gear is sleeved on the outer side of the transmission shaft at the bottom of the connecting frame.

3. The prestressed tension anti-fall lifting device according to claim 1 is characterized in that: The anti-fall mechanism further includes: a speed-increasing gear internally disposed in the housing and rotatably connected to the housing, wherein the speed-increasing gear is formed between the transmission gear and the braking gear and meshes with the transmission gear and the braking gear.

4. The prestressed tension anti-fall lifting device according to claim 1 is characterized in that: The connecting frame comprises: a cross bar for mounting the first driving motor, a connecting frame arranged at both ends of the cross bar in the length direction and penetrated by the transmission shaft, the transmission shaft is rotatably connected to the connecting frame, and the power gear is formed in the connecting frame; The power mechanism further comprises: a plurality of guide wheels symmetrically arranged on the inner side wall of the connection frame and rotatably connected to the connection frame.

5. The prestressed tension anti-fall lifting device according to claim 1, characterized in that: The transmission gear is configured to have a sleeve portion formed outside the transmission shaft, and the sleeve portion extends radially outward to form a gear portion meshed with the brake gear; The inner peripheral wall of the sleeve portion is recessed to form a limiting groove, and the transmission shaft is constructed with a transmission block extending into the limiting groove.

6. The prestressed tension anti-fall lifting device according to claim 5, characterized in that: The anti-fall mechanism also includes: a rotating support member coaxially sleeved on the sleeve portion, the inner ring of the rotating support member is fixedly connected to the sleeve portion, and an end cover is arranged on the shell and fixedly connected to the outer ring of the rotating support member, the end cover is penetrated by the transmission shaft and radially separated from the transmission shaft.

7. The prestressed tension anti-fall lifting device according to claim 1 is characterized in that: The prestressed tensioning anti-falling lifting device also includes: a cantilever mechanism configured at both ends of the suspension shaft to suspend the tensioning equipment, a leveling mechanism configured at the power mechanism to adjust the cantilever mechanism to a horizontal posture, and a pivot mechanism that rotatably connects the power mechanism and the suspension shaft.

8. The prestressed tension anti-fall lifting device according to claim 7, characterized in that: The cantilever mechanism includes: a first drive component, a first cantilever controlled by the first drive component and rotating in a first horizontal plane, a second drive component arranged at an end of the first cantilever away from the first drive component, a second cantilever controlled by the second drive component and rotating in a second horizontal plane, and a suspension device arranged at the second cantilever and suspending the tensioning device to move along the length direction of the second cantilever.

9. The prestressed tension anti-fall lifting device 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 rod of the telescopic unit.

10. The prestressed tension anti-fall lifting device 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.

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