A curved construction hoist

Abstract

This invention relates to a curved construction hoist, comprising a curved track, a cage, a main suspension frame, a lifting drive mechanism, and a leveling mechanism. The cage is mounted on the curved track via the main suspension frame in a height-adjustable manner. The lifting drive mechanism drives the main suspension frame to ascend or descend along the curved track. The cage and the main suspension frame are connected by an upper hinge shaft and are rotatable relative to each other around the central axis of the upper hinge shaft. The leveling mechanism drives the cage to rotate around the central axis of the upper hinge shaft to adjust the levelness of the cage bottom. With this curved construction hoist, as the cage ascends along the curved track, the multiple cycles of the leveling mechanism ensure that the cage bottom remains level at all times, allowing the operator and passengers to remain upright and safe during the ascent, and preventing the transported goods from tipping over.

Description

Technical Field

[0001] This invention relates to a curved construction hoist, belonging to the technical field of construction hoists. Background Technology

[0002] Ordinary construction hoists transport workers or materials from the ground to a desired stopping height or from a designated height to the ground by moving the cage up and down. The working guide rails of ordinary construction hoists are perpendicular to the horizontal plane. However, in the construction of some thermal power plant cooling tower projects and bridge piers, the building surfaces are often curved, making ordinary construction hoists unsuitable. Construction companies often use a method of building a high-speed derrick platform on the outside of the building. Workers then walk up stairs within the derrick platform to the construction site, which is extremely inconvenient, labor-intensive, inefficient, and unsafe. Alternatively, ordinary construction hoists are used, installed on a derrick or other temporary steel structure. Once the hoist cage reaches a certain height, workers access the construction site via a temporary platform built on the steel structure. This construction method is traditional and cumbersome, requiring the platform to be rebuilt for each increase in height, and the distance between the platforms increases with each increase.

[0003] Currently, some existing technologies involve making the guide rails of the hoist cage into a curved shape to suit the curved shape of the engineering surface and maximize the requirement for the guide rails to be close to the building (or formwork) surface. However, when the cage climbs along the curved track, the bottom of the cage cannot remain horizontal as the angle of the cage's trajectory changes. This prevents the driver and passengers from standing vertically, making them feel unsafe, and there is also a risk of the transported goods tipping over. In addition, traditional curved tracks require the manufacture of several sections of guide rails of different shapes or sizes according to the project requirements. Each section of guide rail needs to be marked, and then several sections of guide rails are installed in the marked order. Therefore, the installation is labor-intensive and troublesome.

[0004] Therefore, this invention proposes a curved construction hoist to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0006] The technical solution provided by this invention is as follows: A curved construction hoist includes a curved track, a cage, a main suspension frame, a lifting drive mechanism, and a leveling mechanism. The cage is installed on the curved track via the main suspension frame in a way that allows it to be lifted and lowered. The lifting drive mechanism is used to drive the main suspension frame to climb or descend along the curved track. The cage and the main suspension frame are connected by an upper hinge shaft and are configured to rotate relative to each other around the central axis of the upper hinge shaft. The leveling mechanism is used to drive the cage to rotate around the central axis of the upper hinge shaft to adjust the levelness of the cage bottom. The bottom of the cage is also provided with an arc-shaped slide rail, the center of which is located on the central axis of the upper hinge shaft. The main suspension frame is provided with a lower hinge hole, and the lower hinge shaft passes through the lower hinge hole and the arc-shaped slide rail. The cage can move along the arc-shaped trajectory of the arc-shaped slide rail.

[0007] Furthermore, the leveling mechanism includes a motor, a screw, a sliding sleeve, a bearing seat, and an adjusting seat. The output shaft of the motor is connected to the screw via a transmission. The sliding sleeve is mounted on the screw, and the adjusting seat is mounted on the sliding sleeve. The adjusting seat is driven by the sliding sleeve to move along the screw. The motor is mounted on the main suspension frame, and the adjusting seat is in contact with the bottom of the cage. The screw is supported by the bearing seat.

[0008] Furthermore, the curved track is composed of several standard guide rail sections spliced ​​together, and transition washers are installed between two adjacent standard guide rail sections.

[0009] Furthermore, the main suspension frame includes a back frame, a bottom frame, and several rollers. The cage is attached to the back frame and located above the bottom frame. The leveling mechanism is installed on the bottom frame, and several rollers are installed on the back frame. The main suspension frame is slidably installed on the curved track via several rollers.

[0010] Furthermore, the lifting drive mechanism includes a transmission plate, and also includes rollers, a back wheel, a motor, and a reducer mounted on the transmission plate. The transmission plate is connected to the main suspension frame, and the transmission plate is slidably mounted on the curved track via the rollers. The output shaft of the motor is connected to the reducer, and a gear is mounted on the output end of the reducer. A rack is mounted on the curved track, and the gear meshes with the rack on the curved track. The back wheel abuts against the back of the rack.

[0011] Furthermore, it also includes an angle sensor, which is installed at the bottom of the cage.

[0012] Furthermore, it also includes a wheel assembly, which includes a bracket and two rollers. The bracket has roller axles at both ends, and the two rollers are mounted on both ends of the bracket via the roller axles. The bracket is rotatably mounted on the back frame.

[0013] Furthermore, it also includes a chassis, which comprises a chassis body and four main support columns mounted on the chassis body. The vertices of the four main support columns are located on the same plane, and the angle between the inclined plane containing the vertices of the four main support columns and the horizontal plane is an acute angle.

[0014] Furthermore, it also includes an upper washer, an upper locking nut, and an upper cotter pin, which, together with the upper hinge pin, are used to connect the main suspension frame and the cage.

[0015] Furthermore, it also includes a lower washer, a lower locking nut, and a lower cotter pin, which, together with the lower hinge pin, are used to connect the main suspension frame and the cage.

[0016] Furthermore, the adjusting seat is mounted on the sliding threaded sleeve via a threaded guide seat.

[0017] Furthermore, the four support columns are connected by reinforcing ribs and / or connecting rods.

[0018] The technical solution provided by this invention has the following advantages compared with the prior art:

[0019] 1. The curved construction hoist of the present invention, when the cage climbs along the curved track, the leveling mechanism can keep the bottom of the cage at all times by working repeatedly, so that the driver and passengers can always stand upright and maintain a sense of security during the process of the cage rising, and the transported goods will not be in danger of tipping over.

[0020] 2. The curved track of the present invention is constructed by splicing together standard guide rail sections. According to the curved shape of the track, transition washers are installed between two adjacent standard guide rail sections to obtain a curved track that meets the requirements of curved construction. Several standard guide rail sections can ultimately form a curved track that meets the requirements of curved construction. Using the above method, different curved tracks can be obtained using the same standard guide rail sections. It is not necessary to manufacture several guide rail sections of different shapes or sizes separately according to the requirements of the project. Instead, the design can be completed using existing standard guide rail sections, which is simple to install and saves manufacturing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the curved construction hoist structure of the present invention;

[0022] Figure 2This is a schematic diagram of the curved track mechanism of the present invention;

[0023] Figure 3 This is an enlarged structural schematic diagram of the transition washer installation according to the present invention;

[0024] Figure 4 This is a front view of the chassis of the present invention;

[0025] Figure 5 This is a front view of the main suspension frame of the present invention;

[0026] Figure 6 This is a side view of the main suspension frame of the present invention;

[0027] Figure 7 This is a front view of the installation of the cage, main suspension frame, and lifting drive mechanism of the present invention.

[0028] Figure 8 For the present invention Figure 7 Side view;

[0029] Figure 9 For the present invention Figure 8 Enlarged view of point A;

[0030] Figure 10 For the present invention Figure 8 Enlarged diagram of point B;

[0031] Figure 11 This is a front view of the leveling mechanism of the present invention;

[0032] Figure 12 This is a side view of the leveling mechanism of the present invention;

[0033] Figure 13 This is a front view of the lifting drive mechanism of the present invention;

[0034] Figure 14 This is a rear view of the lifting drive mechanism of the present invention;

[0035] In the diagram, 1. Curved track; 101. Standard section guide rail; 102. Transition washer; 103. Rack; 2. Cage; 3. Main suspension frame; 301. Back frame; 302. Bottom frame; 4. Lifting drive mechanism; 401. Transmission plate; 402. Back wheel; 403. Motor; 404. Reducer; 405. Gear; 5. Leveling mechanism; 501. Motor; 502. Coupling; 503. Screw; 504. Sliding sleeve; 50 5. Bearing housing; 506. Adjusting seat; 507. Screw sleeve guide seat; 6. Angle sensor; 7. Roller; 8. Wheel set; 801. Bracket; 9. Arc-shaped slide rail; 10. Chassis; 1001. Chassis body; 1002. Main support column; 11. Upper hinge shaft; 1101. Upper washer; 1102. Upper lock nut; 1103. Upper cotter pin; 12. Lower hinge shaft; 1201. Lower washer; 1202. Lower lock nut; 1203. Lower cotter pin. Detailed Implementation

[0036] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0037] like Figures 1-14 As shown, a curved construction hoist includes a curved track 1, a cage 2, a main suspension frame 3, a lifting drive mechanism 4, and a leveling mechanism 5. The cage 2 is mounted on the curved track 1 via the main suspension frame 3 in a way that allows it to be raised and lowered. The lifting drive mechanism 4 is used to drive the main suspension frame 3 to climb or descend along the curved track 1. The cage 2 is connected to the main suspension frame 3 via an upper hinge shaft 11, and the cage 2 is configured to rotate relative to the main suspension frame 3 around the central axis of the upper hinge shaft 11. The leveling mechanism 5 is used to drive the cage 2 to rotate around the central axis of the upper hinge shaft 11 to adjust the levelness of the cage bottom.

[0038] As the cage 2 ascends along the curved track 1, the leveling mechanism 5 works repeatedly to keep the bottom of the cage 2 level at all times, allowing the driver and passengers to remain upright and safe as the cage 2 rises, and preventing the transported goods from tipping over.

[0039] More specifically, the upper middle positions of the cage 2 and the main suspension frame 3 are respectively designed with interconnecting upper hinge holes. The cage 2 and the main suspension frame 3 are connected by an upper hinge shaft 11 passing through the upper hinge holes. An upper washer 1101, an upper locking nut 1102, and an upper cotter pin 1103 are sequentially installed on the extended end of the upper hinge shaft 11. The upper washer 1101, upper locking nut 1102, and upper cotter pin 1103 cooperate with the upper hinge shaft 11 to reliably connect the main suspension frame 3 and the cage 2, and the cage 2 and the main suspension frame 3 can rotate relative to each other around the central axis of the upper hinge shaft 11. The bottom of the cage 2 is also provided with an arc-shaped slide rail 9. The center of the arc-shaped slide 9 is located on the central axis of the upper hinge shaft 11. The main suspension frame 3 is provided with several lower hinge holes. The number of lower hinge shafts 12 is adapted to the number of lower hinge holes. The lower hinge shafts 12 pass through the lower hinge holes and the arc-shaped slide 9. A lower washer 1201, a lower locking nut 1202, and a lower cotter pin 1203 are sequentially installed on the extended end of the lower hinge shaft 12. The lower washer 1201, the lower locking nut 1202, and the lower cotter pin 1203 cooperate with the lower hinge shaft 12 to reliably connect the main suspension frame 3 and the cage 2, and the cage 2 can move along the arc-shaped trajectory of the arc-shaped slide 9. When the leveling mechanism 5 is working, it drives the cage 2 to move along the arc-shaped trajectory of the arc-shaped slide 9 with the upper hinge shaft 11 as the center until the bottom of the cage 2 is in a horizontal state.

[0040] The leveling mechanism 5 includes a motor 501, a coupling 502, a screw 503, a sliding sleeve 504, a bearing seat 505, and an adjusting seat 506. The output shaft of the motor 501 is connected to the screw 503 through the coupling 502. The sliding sleeve 504 is mounted on the screw 503. The adjusting seat 506 is mounted on the sliding sleeve 504 through a sleeve guide seat 507. The adjusting seat 506 is driven by the sliding sleeve 504 to move along the screw 503. The motor 501 is mounted on the main suspension frame 3. The adjusting seat 506 is in contact with the bottom of the cage 2. The screw 503 is supported by the bearing seat 505. The working principle of the cage bottom leveling of cage 2 is as follows: Based on the running speed of the construction hoist, the time required for operation in the curved area, and the curvature of the curved track 1, the horizontal displacement of cage 2 during this time period is calculated. The horizontal displacement of cage 2 is the stroke that the sliding sleeve 504 in the leveling mechanism 5 needs to complete during this time period. Then, based on the pitch of the screw 503, the rotation speed of the screw 503 and the motor 501 is calculated and input into the control system. The control system then outputs a control signal indicating the running amount of the sliding sleeve 504. An angle sensor 6 is installed at the bottom of the cage 2, which can transmit the status signal of the cage bottom to the control system in a timely manner. When the entire cage 2 runs along the curved track 1, the cage bottom will tilt with the change of the curve of the curved track 1. When the angle change exceeds a certain value, such as 0.1°, the control system will output a signal to control the leveling mechanism 5 to work automatically. The motor 501 installed on the main suspension frame 3 drives the screw 503 to start rotating in the forward or reverse direction. The rotating screw 503 will drive the sliding sleeve 504 installed on the screw 503 to move along the axis of the screw 503 towards or away from the motor 501. Under the support of the adjusting seat 506 on the sliding sleeve 504, the cage 2 rotates around the central axis of the upper hinge shaft 11 until the bottom of the cage 2 is in a horizontal state. The leveling mechanism 5 will then automatically stop working. The working principle of the leveling mechanism 5 is to keep the bottom of the cage 2 in a horizontal state through multiple cycles.

[0041] A chassis 10 is installed at the bottom of the curved track 1. The chassis 10 includes a chassis body 1001 and four main support columns 1002 mounted on the chassis body 1001. The angle between the inclined plane where the apex of the four main support columns 1002 is located and the horizontal plane is α. The angle α is determined according to the relative position of the curved construction hoist and the bottom of the curved engineering project, preferably α ≤ 15°. The curved track 1 is reliably installed on the chassis 10 through the four support columns, which are connected by reinforcing ribs and / or connecting rods. The chassis 10 is located at the very bottom of the entire curved construction hoist and must be fixed to a stable platform during construction.

[0042] The curved track 1 is assembled from several standard guide rail sections 101, with transition washers 102 installed between adjacent standard guide rail sections 101. The curved track 1 is assembled according to the requirements of the engineering project and in conjunction with the structure of standard guide rail sections 101 of ordinary construction hoists, by adding transition washers 102 at the connection points of two adjacent standard guide rail sections 101. The thickness of the transition washers 102 is determined based on the initial angle (i.e., included angle α) of the bottom chassis 10 of the curved track and the radius of curvature of the curved track 1. Furthermore, the design of the transition washers 102 fully considers the two limit clearances allowed by the meshing of the transmission gear 405 and rack 103, and also considers that changes in the standard guide rail sections 101 should not affect the normal operation of the power supply system, and that the clearances of all rollers 7, back wheels 402, etc., installed on the main suspension frame 3 should not be jammed during operation or detached from the guide rail due to excessive clearance, thus creating safety hazards. A transition washer 102, designed according to the curvature radius of the project, is installed between every two standard guide rail sections 101. The maximum thickness of the transition washer 102 does not exceed 4mm. This will eventually form a curved track 1 that meets the construction requirements of the project.

[0043] The main suspension frame 3 includes a back frame 301, a bottom frame 302, and several rollers 7. The cage 2 is hung on the back frame 301 and located above the bottom frame 302. The leveling mechanism 5 is installed on the bottom frame 302, and the several rollers 7 are installed on the back frame 301. The main suspension frame 3 is slidably mounted on the curved track 1 via the several rollers 7. More specifically, the main suspension frame 3 is also provided with a wheel set 8, which includes a bracket 801 and two rollers 7. The bracket 801 has roller 7 axles at both ends and a mounting shaft in the middle. The two rollers 7 are mounted on both ends of the bracket 801 via the roller 7 axles. The bracket 801 is rotatably mounted on the back frame 301 via the mounting shaft. Since the two rollers 7 on the wheel set 8 are mounted on the back frame 301 via the bracket 801, and the bracket 801 can drive the two rollers 7 to swing around the mounting axis, the wheel set 8 can adjust the contact angle between the two rollers 7 and the curved track 1, ensuring that the two rollers 7 remain in contact with the curved track 1 during climbing or descending. Multiple rollers 7 and wheel sets 8 are installed at different positions on the main suspension frame 3, and these multiple rollers 7 and wheel sets 8 are fitted onto the curved track 1 from different positions and / or different directions, allowing the cage 2 to safely and smoothly slide up and down the curved track 1.

[0044] The lifting drive mechanism 4 includes a transmission plate 401, and also includes rollers 7, back wheels 402, a motor 403, and a reducer 404 mounted on the transmission plate 401. The transmission plate 401 is connected to the main suspension frame 3, and the transmission plate 401 is slidably mounted on the curved track 1 via the rollers 7. The output shaft of the motor 403 is connected to the reducer 404, and a gear 405 is mounted on the output end of the reducer 404. A rack 103 is mounted on the curved track 1, and the gear 405 meshes with the rack 103 on the curved track 1. The back wheel 402 abuts against the back of the rack 103. More specifically, the lifting drive mechanism 4 is the power source for the cage 2 to move up and down along the curved track 1. It consists of multiple rollers 7 mounted on the curved track 1, with the rollers 7 positioned at different locations and / or in different directions, allowing the lifting drive mechanism 4 to slide safely and smoothly up and down the curved track 1. The lifting drive mechanism 4 is mounted on top of the cage 2. Multiple rollers 7 and a back wheel 402 are mounted on the back of the transmission plate 401, while multiple motors 403 and a reducer 404 are mounted on the front of the transmission plate 401. A gear 405 is mounted on the output end of the reducer 404. The gear 405 meshes with a rack 103 on the standard section guide rail 101, and the back wheel 402 rests against the back of the rack 103, ensuring a constant meshing gap between the gear 405 and the rack 103 during relative movement, thus guaranteeing the stable operation of the cage 2.

[0045] The curved construction hoist of the present invention, when the cage 2 climbs along the curved track 1, the leveling mechanism 5 can keep the bottom of the cage 2 in a horizontal state at all times through multiple cycles of operation, so that the driver and passengers can always stand upright and maintain a sense of security during the process of the cage 2 rising, and the transported goods will not be in danger of tipping over.

[0046] Furthermore, the curved track 1 of the present invention is formed by splicing together standard section guide rails 101. According to the curved shape of the curved track 1, transition washers 102 are installed between two adjacent standard section guide rails 101 to obtain a curved track 1 that can meet the requirements of curved construction. Several standard section guide rails 101 can ultimately form a curved track 1 that can meet the requirements of curved construction. Using the above method, different curved tracks 1 can be obtained using the same standard section guide rails 101. It is not necessary to manufacture several guide rails of different shapes or sizes separately according to the requirements of the project. Instead, the design can be completed using the existing standard section guide rails 101, which is simple to install and saves manufacturing costs.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A curved construction hoist, characterized in that, The system includes a curved track (1), a cage (2), a main suspension frame (3), a lifting drive mechanism (4), and a leveling mechanism (5). The cage (2) is mounted on the curved track (1) via the main suspension frame (3) in a way that allows it to be lifted and lowered. The lifting drive mechanism (4) is used to drive the main suspension frame (3) to climb or descend along the curved track (1). The cage (2) and the main suspension frame (3) are connected by an upper hinge shaft (11) and are positioned around the central axis of the upper hinge shaft (11). The leveling mechanism (5) is used to drive the cage (2) to rotate to adjust the level of the bottom of the cage (2); the bottom of the cage (2) is also provided with an arc-shaped slide (9), the center of the arc-shaped slide (9) is located on the central axis of the upper hinge shaft (11), the main suspension frame (3) is provided with a lower hinge hole, the lower hinge shaft (12) passes through the lower hinge hole and the arc-shaped slide (9), and the cage (2) can move along the arc-shaped trajectory of the arc-shaped slide (9); The leveling mechanism (5) includes a motor (501), a screw (503), a sliding sleeve (504), a bearing seat (505), and an adjusting seat (506). The output shaft of the motor (501) is connected to the screw (503) for transmission. The sliding sleeve (504) is mounted on the screw (503). The adjusting seat (506) is mounted on the sliding sleeve (504). The adjusting seat (506) is driven by the sliding sleeve (504) to move along the screw (503). The motor (501) is mounted on the main suspension frame (3). The adjusting seat (506) is in contact with the bottom of the cage (2). The screw (503) is supported by the bearing seat (505). The curved track (1) is spliced ​​together from several standard guide rail sections (101), and transition washers (102) are installed between two adjacent standard guide rail sections (101). The main suspension frame (3) includes a back frame (301), a bottom frame (302) and several rollers (7). The cage (2) is attached to the back frame (301) and located above the bottom frame (302). The leveling mechanism (5) is installed on the bottom frame (302). Several rollers (7) are installed on the back frame (301). The main suspension frame (3) is slidably installed on the curved track (1) by several rollers (7). It also includes a wheel set (8), which includes a bracket (801) and two rollers (7). The bracket (801) has roller shafts at both ends. The two rollers (7) are mounted on both ends of the bracket (801) through the roller shafts. The bracket (801) is mounted on the back frame (301) in a rotatable manner. The bracket (801) can drive the two rollers (7) to swing around the mounting shaft. Therefore, the wheel set (8) can adjust the contact angle between the two rollers (7) and the curved track (1) so that the two rollers (7) are always in contact with the curved track (1) during climbing or descending.

2. The curved construction hoist according to claim 1, characterized in that, The lifting drive mechanism (4) includes a transmission plate (401), and also includes a roller (7), a back wheel (402), a motor (403), and a reducer (404) mounted on the transmission plate (401). The transmission plate (401) is connected to the main suspension frame (3), and the transmission plate (401) is slidably mounted on the curved track (1) via the roller (7). The output shaft of the motor (403) is connected to the reducer (404), and a gear (405) is mounted on the output end of the reducer (404). A rack (103) is mounted on the curved track (1), and the gear (405) meshes with the rack (103) on the curved track (1). The back wheel (402) abuts against the back of the rack (103).

3. The curved construction hoist according to claim 1, characterized in that, It also includes an angle sensor (6), which is mounted on the bottom of the cage (2).

4. The curved construction hoist according to claim 1, characterized in that, It also includes a chassis (10), which includes a chassis body (1001) and four main support columns (1002) set on the chassis body (1001). The vertices of the four main support columns (1002) are located on the same surface, and the angle between the inclined plane where the vertices of the four main support columns (1002) are located and the horizontal plane is an acute angle.

5. The curved construction hoist according to claim 1, characterized in that, The adjusting seat (506) is mounted on the sliding threaded sleeve (504) via the threaded sleeve guide seat (507).

6. The curved construction hoist according to claim 4, characterized in that, The four main support columns (1002) are connected by reinforcing ribs and / or connecting rods.

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