Temperature-adaptive construction elevator with counterweight and staged unloading and implementation method thereof

Abstract

The present invention provides a temperature-adaptive construction elevator with counterweight-type segmented unloading and an implementation method. An unloading attachment frame is arranged on a secondary guide rail frame every one or more standard sections in the vertical direction. A counterweight is arranged at one end of the unloading attachment frame, and the other end is fixed on a vertical structure spaced apart from the secondary guide rail frame, and the unloading attachment frame is clamped and clamped to the secondary guide rail frame from the periphery; the bottom or lower part of the secondary guide rail frame is rigidly fixed to the vertical structure or the ground or foundation; the main guide rail frame and the secondary guide rail frame are fixed as a whole through a connecting rod, and the counterweight is connected to the connecting rod through a traction rope pulley mechanism. The device and method can unload the deadweight of the guide rail frame in segments and release temperature stress, which solves the problem that the internal stress of the guide rail frame of the traditional construction elevator is large due to the high installation height and large temperature change, so that the lifting height of the elevator is not limited.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a counterweight-type segmented unloading temperature-adaptive construction elevator and an implementation method thereof. Background Art

[0002] The construction elevators currently used in the construction of super-high-rise buildings have a high operating height, which leads to a heavy overall weight of the guide rail frame. In addition, most existing construction elevators adopt a force-bearing mode in which the bottom base bears all vertical forces, and the wall-mounted frame only bears horizontal forces, resulting in a large force on the guide rail frame components near the base. At the same time, the constraint method of the base plus multiple wall-mounted frames limits the free expansion and contraction of the guide rail frame. When the temperature changes greatly, the guide rail frame cannot expand and contract freely, resulting in large temperature stress inside. Therefore, in the existing construction elevator design, the guide rail frame near the base is subjected to large forces and large temperature stresses when the temperature changes greatly, which poses a safety risk to the overall operation of the construction elevator. In response to the above problems, a counterweight-type segmented unloading temperature-adaptive construction elevator was developed without changing the original guide rail frame structure. Summary of the invention

[0003] In order to better meet the construction needs of super high-rise buildings, especially the construction of super high-rise buildings in areas with large temperature changes, the present invention provides a counterweight-type segmented unloading temperature-adaptive construction elevator and an implementation method. The device can unload the deadweight of the guide rail frame in segments and release temperature stress, thereby solving the problem of large internal stress of the guide rail frame caused by the high installation height and large temperature changes of the traditional construction elevator guide rail frame, so that the lifting height of the elevator is not restricted.

[0004] Furthermore, the present invention provides a device capable of running multiple elevator cages on a single guide rail frame, thereby greatly improving the vertical transportation capacity and expanding the application range of the elevator.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A counterweight-type segmented unloading temperature-adaptive construction elevator, comprising a double-tower lifting structure composed of a main rail frame and a secondary rail frame, wherein a cage is arranged on the main rail frame; the main rail frame and the secondary rail frame are both formed by splicing a plurality of standard sections, and the characteristics are:

[0007] An unloading attachment frame is arranged on the secondary guide rail frame at every one or more standard sections along the vertical direction, a counterweight is arranged at one end of the unloading attachment frame, and the other end is fixed on a vertical structure spaced apart from the secondary guide rail frame, and the unloading attachment frame embraces and clamps the secondary guide rail frame from the periphery;

[0008] The bottom or lower part of the secondary guide rail frame is rigidly fixed to the vertical structure or the ground or foundation;

[0009] The main guide frame and the secondary guide frame are fixed as a whole through a connecting rod, and the counterweight is connected to the connecting rod through a traction rope pulley mechanism.

[0010] Preferably, the unloading attachment frame clamps the four supporting columns of the standard section of the secondary guide frame from the periphery through a clamping wheel group arranged on the frame body, and the three outer sides of each column are in clamping contact with a clamping wheel of the clamping wheel group.

[0011] Preferably, the unloading attachment frame is a truss-like frame, and a section of the frame that cooperates with the secondary guide rail frame is a rectangular hexahedral frame. Three holding wheels are arranged at the top and bottom of the hexahedral frame at the contact points with the four supporting columns of the secondary guide rail frame to form a holding wheel group, wherein the wheel axles of two holding wheels extend parallel to the hexahedral frame and the wheel surfaces are arranged opposite to each other at intervals, and the other holding wheel is arranged above the root of the wheel axles of the first two holding wheels and the wheel surface is located laterally between the two holding wheels, so that the three holding wheels clamp and engage the corresponding columns from the three outer sides respectively, so that the secondary guide rail frame can slide vertically along the unloading attachment frame between the holding wheel groups.

[0012] Preferably, the counterweight is suspended on the unloading attachment frame through a pulley and is located in the gap between the primary guide frame and the secondary guide frame.

[0013] Preferably, a plurality of connecting rods are evenly spaced apart vertically between the primary guide frame and the secondary guide frame.

[0014] Preferably, the other end of the unloading attachment frame is fixedly connected to a vertical structure spaced apart from the secondary guide rail frame through a connecting piece.

[0015] Preferably, the counterweight is of container type or block-like stacking type.

[0016] Preferably, at least one standard section in the main track frame is replaced with a rotating track-changing section, so that the main track frame is composed of a standard section and a rotating track-changing section. In the position of the rotating track-changing section, the cage can be switched from the track on one side to the track on the other side through the rotating track-changing section.

[0017] Preferably, the rotating track-changing section comprises a fixed frame, a rotating frame and a track; wherein the fixed frame comprises an upper fixed transition section and a lower fixed transition section; the rotating frame comprises an upper rotating transition section, an intermediate section and a lower rotating transition section which are sequentially connected from top to bottom, and the upper rotating transition section and the upper fixed transition section, and the lower rotating transition section and the lower fixed transition section are respectively rotationally connected via bearings, and are locked via a rotating locking device, and the rotating frame rotates along the rotating axis where the bearings are located; the tracks are two tracks which are symmetrical along the center of the rotating axis, and both tracks comprise a fixed frame section and a rotating frame section, the fixed frame section is fixed on the upper and lower fixed transition sections, the rotating frame section is fixed on the rotating frame, and the track is connected as a whole with the track on the standard section for the cage to move up and down; the rotating locking device has two states, locked and unlocked, in the locked state, the rotating frame and the fixed frame are relatively stationary, and the cage moves up and down along the two tracks; in the unlocked state, the cage rotates 180 degrees around the rotating axis together with the rotating frame on the rotating frame section of one of the tracks.

[0018] Furthermore, in the rotary track-changing section, the bearing is driven by a rotary drive mechanism.

[0019] Furthermore, the rotation locking device includes a guide cylinder, a latch, a latch drive and a fixed cylinder; the latch is inserted into the guide cylinder, the rear end of the latch is connected to the latch drive, the guide cylinder and the latch drive are arranged on a fixed frame; the fixed cylinder is arranged on the rotating frame and is in the same straight line as the guide cylinder.

[0020] Furthermore, the front end of the latch is conical.

[0021] Furthermore, it also includes a positioning device, which includes an angle sensor, a rotating component of the angle sensor is installed on the rotating frame through a fixed bracket, and a stationary component of the angle sensor is fixed on the fixed frame through a fixed bracket.

[0022] Furthermore, it also includes a power supply device, which includes a busbar and an electrical slip ring, wherein the busbar is symmetrical along the center of the rotation axis, and includes a fixed section and a rotating section, which are respectively arranged in the fixed section bus duct and the rotating section bus duct, the fixed section bus duct is fixed on the fixed frame, and the rotating section bus duct is fixed on the rotating frame, and the contact portion of the fixed section and the rotating section is an inverted cone; the stator of the electrical slip ring is fixed on the fixed frame, and the rotor of the electrical slip ring is fixed on the rotating frame, and its rotating axis coincides with the rotating axis of the rotating frame, the rotating section bus duct is connected to the rotor of the electrical slip ring, and the fixed section bus duct is connected to the stator of the electrical slip ring.

[0023] Furthermore, the fixed frame also includes an intermediate fixed tube for enhancing load bearing capacity, which is arranged between the upper fixed transition section and the lower fixed transition section.

[0024] The implementation method of the above-mentioned construction elevator is characterized in that: when the temperature rises, the main rail frame and the secondary rail frame expand due to the temperature rise and become longer. Since the base restricts the downward movement of the main rail frame, the main rail frame and the secondary rail frame are deformed upward together. At this time, the secondary rail frame slides upward along the unloading attachment frame. At the same time, the counterweight moves downward and provides a constant vertical force all the time, realizing segmented unloading and releasing the temperature stress caused by the temperature rise to the main rail frame, thereby ensuring the safe operation of the construction elevator.

[0025] When the temperature drops, the main guide frame and the secondary guide frame shrink due to the temperature drop and their length becomes smaller. Since the base limits the downward movement of the main guide frame, the main guide frame and the secondary guide frame deform downward together. At this time, the secondary guide frame slides downward along the unloading attachment frame. At the same time, the counterweight moves upward and provides a constant vertical force to achieve segmented unloading, and can release the temperature stress brought to the main guide frame due to temperature rise, ensuring the safe operation of the construction elevator.

[0026] The principle of the present invention is:

[0027] The present invention discloses a temperature-adaptive construction elevator with counterweight-type segmented unloading and an implementation method. The main rail frame and the secondary rail frame are connected by a connecting rod to form an integral body; the unloading attachment frame is connected to the secondary rail frame by a holding wheel to limit the horizontal movement of the main rail frame and the secondary rail frame, but not to limit their vertical movement; the counterweight is connected to the connecting rod between the main rail frame and the secondary rail frame by a steel wire rope, and is suspended on the unloading attachment frame to unload part or all of the dead weight of the main rail frame, the secondary rail frame and the connecting rod, which can play the role of segmented unloading. Since the main rail frame and the secondary rail frame can slide relatively along the unloading attachment frame through the holding wheel group, when the temperature changes, the rail frame can expand and contract freely, avoiding the safety hazard caused by excessive temperature stress of the rail frame due to temperature difference; by arranging the unloading attachment frame and the counterweight in sections, the pressure at the bottom of the rail frame can be reduced, and a constant force can be provided to the rail frame under any circumstances, ensuring that the rail frame can be freely extended and retracted, so that the construction elevator can easily cope with height and large temperature difference.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] The counterweight is used to remove the deadweight of the guide rail frame of the construction elevator in sections, providing a vertical upward force to the main guide rail frame, the secondary guide rail frame or the connecting rod, and removing part or all of the deadweight of the main guide rail frame, the secondary guide rail frame and the connecting rod in sections, so as to achieve the effect of counterweight segmented unloading. When the temperature changes, the main guide rail frame and the secondary guide rail frame slide along the unloading attachment frame through the holding wheel, and the temperature stress is released, so that the temperature of the construction elevator is self-adaptive. As a result, the operating height of the construction elevator is not limited by temperature, and the temperature stress of the guide rail frame is released by sliding the guide rail frame along the unloading attachment frame, so that the temperature of the construction elevator is self-adaptive. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional diagram of the overall structure of the temperature-adaptive construction elevator with counterweight and segmented unloading according to the present invention;

[0031] Figure 2 is a top view of the temperature-adaptive construction elevator with counterweight and staged unloading according to the present invention;

[0032] Figure 3 This is a top view of the installation structure of the unloading attachment frame of the present invention;

[0033] Figure 4 It is a top view of the unloading attachment frame and the secondary guide rail frame of the present invention in cooperation with each other;

[0034] Figure 5 is a three-dimensional view of the connection between the unloading attachment frame and the counterweight of the present invention;

[0035] Figure 6 This is a three-dimensional structural diagram of the unloading attachment frame of the present invention;

[0036] Figure 7 It is a detailed structural diagram of the unloading attachment frame and the holding wheel of the present invention;

[0037] Figure 8 It is a detailed structural diagram of the unloading attachment frame and the fixed pulley of the present invention;

[0038] Fig. 9 It is a detailed structural diagram of the connection between the unloading attachment frame and the secondary guide rail frame of the present invention;

[0039] Fig.10 It is another detailed structural diagram of the connection between the unloading attachment frame and the secondary guide frame holding wheel of the present invention;

[0040] Fig.11 It is a three-dimensional structural diagram of the main guide frame, the secondary guide frame and the connecting rod of the present invention;

[0041] Fig.12 It is a three-dimensional structural diagram of a temperature-adaptive construction hoist with counterweight and staged unloading with a rotating joint;

[0042] Fig.13 It is a three-dimensional structural diagram of the connection between the rotating track-changing section and the standard section;

[0043] Fig.14 It is a three-dimensional structural diagram of the rotary track-changing section;

[0044] Fig.15 for Fig.14 The main view of

[0045] Fig.16 for Fig.15 A top view of

[0046] Fig.17 for Fig.16 AA section view;

[0047] Fig.18 for Fig.16 BB cross-sectional view. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] like Figure 1 - The temperature-adaptive construction elevator with counterweight and segmented unloading shown in 11 comprises: a main rail frame 2, a secondary rail frame 3, a connecting rod 4, an unloading attachment frame 1, a counterweight 5, a cage 10 and a base 11, and is characterized in that: the main rail frame 2 of the elevator is used for the cage 10 to travel, so that the cage 10 runs on the main rail frame 2 to transport materials and personnel, such as Figure 2 , two cages 10 are set to rise and fall along the main rail frame 2 through the track; according to the prior art, one side of the main rail frame 2 is provided with an upward rail, and the other side is provided with a downward rail (not shown); Fig.11 As shown, the main guide frame 2 and the secondary guide frame 3 of the elevator are composed of a plurality of standard sections supported by four columns stacked vertically end to end, and each standard section is a truss with vertical cross supports and horizontal supports on the main frame supported by four columns; a connecting rod 4 is arranged between the main guide frame 2 and the secondary guide frame 3 in the horizontal direction, and the main guide frame 2 and the secondary guide frame 3 are connected by the connecting rod 4 to form an integral guide frame; a plurality of connecting rods 4 are arranged at uniform intervals along the vertical direction, and the connecting rods 4 are preferably arranged at the horizontal supports of each standard section; one end of the unloading attachment frame 1 is fixed to a vertical structure 12 such as a concrete structure, and the other end is movably connected to the secondary guide frame 3. The secondary guide rail frame 3 and the main guide rail frame 2 can be deformed in coordination, and can slide vertically along the unloading attachment frame 1 through the movable connection between the secondary guide rail frame 3 and the unloading attachment frame 1 (through the holding wheel group 8); the secondary guide rail frame 3 and the main guide rail frame 2 are both composed of multiple standard sections connected vertically end to end; an unloading attachment frame 1 and a configuration 5 are set between every one or more standard sections of the secondary guide rail frame 3, and the counterweight 5 is suspended on the unloading attachment frame 1 by the pulley 6, providing a vertical upward force to the entire guide rail frame, unloading part or all of the deadweight of the entire guide rail frame in sections, achieving the effect of unloading the counterweight in sections, so that the operating height of the construction elevator is not limited. The base 11 is fixed between the main guide rail frame 2 and the vertical structure 12, and is located at the lower end of the main guide rail frame 2.

[0050] like Figure 3 and 4As shown, the unloading attachment frame 1 is connected to the vertical structure 12 through the connecting member 9, and the load of the unloading attachment frame 1 is transferred to the vertical structure 12. It should be noted that the connecting member 9 can be in the form of pre-embedded or chemical anchor bolts.

[0051] like Figure 4-11 The unloading attachment frame 1 includes an attachment frame body, a pulley 6, a wheel group 8, a wire rope 7, and a counterweight 5; the pulley 6 and the wheel group 8 are fixed on the attachment frame body, and the unloading attachment frame 1 can limit the horizontal movement of the secondary guide frame 3, but does not limit its vertical movement.

[0052] like Figure 4-10 As shown, the frame body of the unloading attachment frame 1 is truss-shaped, and a section of the frame body that cooperates with the secondary guide rail frame 3 is a rectangular hexahedron frame, which surrounds the four columns of the secondary guide rail frame 3 from the outside and is fixed to the four columns of the secondary guide rail frame 3 through a holding wheel group 8; specifically, for each of the four columns, three holding wheels are arranged at the top and bottom of the hexahedron frame at the contact points with the four columns of the secondary guide rail frame to form a holding wheel group 8, wherein the wheel axles of two holding wheels extend parallel to the hexahedron frame and the wheel surfaces are arranged opposite to each other at intervals, and the other holding wheel is arranged above the root of the wheel axles of the first two holding wheels and the wheel surface is located laterally between the two holding wheels, so that the three holding wheels clamp and hold the corresponding columns from three outer sides respectively (such as Figure 3 , 4 , 10) so that the secondary guide rail frame 3 can slide vertically between the wheel groups; each wheel 8 has the same structure, with a smooth concave middle part and bulges at both ends, and is set on its own wheel axle; it is divided into two categories according to the different setting positions, wherein the wheel axles of the two wheel 8b are parallel and perpendicular to the column of the four columns, the two wheel 8b extend horizontally to the inner side of the hexahedral frame and the wheel surfaces of each wheel are relatively spaced, the support shaft of the wheel 8a is parallel to the top of the hexahedral frame and is set at the root of the wheel axles of the two wheel 8b, so that the wheel surface of the wheel 8a is set back between the two wheel 8b;

[0053] The rectangular hexahedron frame is cantilevered outward from one end of the vertical structure 12 in the horizontal direction to set a pulley 6, preferably the pulley 6 is extended from the middle position of the rectangular hexahedron frame in the horizontal direction to maintain balance; the pulley 6 is supported by its own wheel axle, and the steel wire rope 7 matched with the pulley 6 is set in a direction parallel to the four columns, and the counterweight 5 is connected to the connecting rod 4 between the main guide frame 2 and the secondary guide frame 3 by the steel wire rope 7 bypassing the pulley 6. The counterweight 5 is suspended in the horizontal gap between the main guide frame 2 and the secondary guide frame 3, and the position of the pulley 6 and the configuration 5 does not contact or interfere with the main guide frame 2.

[0054] The form of the counterweight 5 is not limited, and can be a container type or a block stack type, and the weight of the counterweight can be adjusted by increasing or decreasing the material in the container or increasing or decreasing the number of counterweight blocks. The counterweight 5 can unload part or all of the deadweight of the main rail frame 2, the secondary rail frame 3 and the connecting rod 4, and directly transfer the deadweight load to the vertical structure 12 through the unloading attachment frame 1.

[0055] One end of the rectangular hexahedron frame close to the vertical structure 12 in the horizontal direction is supported and fixed by a rectangular hexahedron three-dimensional truss, and the end of the three-dimensional truss is connected to the vertical structure 12 through a connecting piece 9.

[0056] The form of the base 11 is not limited. It can be rigidly fixed on the ground or rigidly attached to the vertical structure 12. The load it bears is the weight difference between the counterweight 5 and the main guide frame 2, the secondary guide frame 3, the connecting rod 4, the cage 10 and the load. The direction of the load it bears may be upward or downward.

[0057] like Fig. 9 When the temperature changes, the main guide frame 2 and the secondary guide frame 3 slide substantially vertically along the unloading attachment frame 1, and can be deformed freely, and the temperature stress is released, so that the temperature of the construction elevator is self-adaptive.

[0058] When the temperature rises, the main guide frame 2 and the secondary guide frame 3 expand due to the temperature rise, and the vertical length becomes longer. Since the base 11 is fixedly connected to the main guide frame 2, the movement of the bottom end of the main guide frame 2 is restricted, so the main guide frame 2 and the secondary guide frame 3 deform upward together. At this time, the secondary guide frame 3 slides upward along the unloading attachment frame 1 under the action of the holding wheel 8. At the same time, the counterweight 5 moves downward under the action of the pulley 6 and provides a constant vertical force all the time to achieve segmented unloading, and can release the temperature stress brought to the main guide frame 2 due to the temperature rise, thereby ensuring the safe operation of the construction elevator.

[0059] When the temperature drops, the main guide frame 2 and the secondary guide frame 3 shrink due to the temperature drop and their length becomes smaller. Since the base 11 is fixed to the main guide frame 2, the movement of the bottom end of the main guide frame 2 is restricted, so the main guide frame 2 and the secondary guide frame 3 deform downward together. At this time, the secondary guide frame 3 slides downward along the unloading attachment frame 1 under the action of the holding wheel 8. At the same time, the counterweight 5 moves upward under the action of the pulley 6 and provides a constant vertical force all the time to achieve segmented unloading, and can release the temperature stress brought to the main guide frame 2 due to temperature rise, thereby ensuring the safe operation of the construction elevator.

[0060] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0061] Furthermore, on the basis of the above-mentioned embodiment, the main rail frame 2 can also be replaced by a simple standard-section conventional elevator into a single-tower circulating construction elevator, that is, rotating track-changing sections 13 that can change tracks are placed at a certain distance at the upper and lower ends and in the middle of the standard section of the main rail frame 2, that is, the main rail frame 2 is spliced ​​by standard sections and rotating track-changing sections 13, and the cage 10 realizes circulating operation through the upward guide rail, the downward guide rail and the rotating section. At the position of the rotating track-changing section 13, the cage 10 is switched from the track on one side to the track on the other side, so that the circulating operation of the cage 10 can be realized, and multiple elevator cages can be run on a single guide rail frame, thereby greatly improving its vertical transportation capacity.

[0062] like Fig.13 Each rotating track changing section 13 includes a rotating frame 131 supported by four columns, a fixed frame 132 located in the rotating frame 131 as a rotating support axis, and a rotating drive 135. The rotating frame 131 can rotate around the fixed frame 132. The four columns of the rotating frame 131 and the standard section of the main track frame 2 are the same size, ensuring that the cage 10 can smoothly rotate around the fixed frame 132 through the rotating frame 131, so that the cage 10 rotates from one side of the main track frame 2 to the other side, thereby achieving the purpose of multiple cages 10 circulating in one direction (clockwise or counterclockwise) on the main track frame 2.

[0063] The structure of the rotary track-changing device including the rotary track-changing sections 13 has become a prior art, and there are many implementation forms. For details, please refer to the aforementioned patent application of the applicant (Chinese patent CN104709795A) (see Figure 14-18 ). It includes a rotating frame 131, a track 134, and a fixed frame 132 as a rotating support shaft; wherein the fixed frame 132 includes an upper fixed transition section 132a and a lower fixed transition section 132b. In order to enhance the load bearing capacity, an intermediate fixed cylinder 132c can be selectively provided between the upper fixed transition section and the lower fixed transition section to form a rotating support shaft 15; the rotating frame 131 includes an upper rotating transition section 131a, a lower rotating transition section 131b and an intermediate section 131c connected in sequence from top to bottom, and the upper rotating transition section 131a and the upper fixed transition section 132b are connected in sequence from top to bottom. 32a, the lower rotating transition section 131b and the lower fixed transition section 132b are respectively connected by bearings for rotation and locked by a rotating locking device, and the rotating frame 131 rotates along the rotating axis where the bearing is located; the track 134 is two symmetrical tracks along the center of the rotating axis, and the two tracks 134 include a fixed frame section and a rotating frame section, the fixed frame section is fixed on the upper and lower fixed transition sections 132a, 132b, and the rotating frame section is fixed on the rotating frame 131, and the track 134 is connected as a whole with the track on the standard section for the cage 10 to run up and down.

[0064] The rotating locking device 138 has two states: locked and unlocked. In the locked state, the rotating frame 131 and the fixed frame 132 are relatively stationary, and the cage 10 runs up and down along the two tracks; in the unlocked state, the cage 10 rotates 180 degrees around the rotation axis together with the rotating frame on the rotating frame section of one of the tracks, so that the rotating frame and the fixed frame originally symmetrical with the center form a complete track, and the cage 10 runs on this track.

[0065] The bearing 3 is driven by a rotation drive mechanism 5 .

[0066] The rotation locking device 138 comprises a guide cylinder 138b, a latch 138a, a latch drive 138d and a fixed cylinder 138c; the latch 138a is inserted into the guide cylinder 138b, and the rear end of the latch 138a is connected to the latch drive 138d (in this embodiment, the rear end of the latch 138a is in the shape of a rack, meshing with the rack of the latch drive 138d, and the latch 138a is driven to move forward or backward by the latch drive 138d), the guide cylinder 138b and the latch drive 138d are arranged on the fixed frame 132; the fixed cylinder 138c is arranged on the rotating frame 131, and is in the same straight line with the guide cylinder 138b. By adopting a latch-type rotation locking device and setting the front end of the latch to be conical, when the rotating frame rotates at a slight difference from 180 degrees, it can be corrected by the movement of the latch.

[0067] In order to control the rotation angle of the rotating frame 131, the device also includes a positioning device 137, which includes an angle sensor 137a. The rotating part of the angle sensor 137a is installed on the rotating frame 131 through a fixed bracket 137b, and the fixed part of the angle sensor 137a is fixed to the fixed frame 132 through the fixed bracket 137b.

[0068] In order to provide uninterrupted power supply during the rotation process, the device also includes a power supply device, which includes a busbar 136a and an electrical slip ring 136b, wherein the busbar 136a is symmetrical along the center of the rotation axis (can be 2 or 4), and both include a fixed section and a rotating section, which are respectively arranged in the fixed section bus duct and the rotating section bus duct, the fixed section bus duct is fixed on the fixed frame 132, and the rotating section bus duct is fixed on the rotating frame 131, and the contact part between the fixed section and the rotating section is an inverted cone, which can ensure that the carbon brush can pass smoothly within a certain error range; the stator of the electrical slip ring 136b is fixed on the fixed frame 132, and the rotor of the electrical slip ring 136b is fixed on the rotating frame 131, and its rotation center axis coincides with the rotation center axis of the rotating frame 131, the rotating section bus duct is connected to the rotor of the electrical slip ring 136b, and the fixed section bus duct is connected to the stator of the electrical slip ring 136b.

[0069] Assume that the original busbars are two symmetrical busbars along the center of the rotation axis, including the first fixed section and the first rotating section, and the second fixed section and the second rotating section. The first fixed section includes the first upper fixed section located on the upper fixed transition section and the first lower fixed section located on the lower fixed transition section, and the second fixed section includes the second upper fixed section located on the upper fixed transition section and the second lower fixed section located on the lower fixed transition section. In the initial position, the first fixed section and the first rotating section form a complete busbar, and the second fixed section and the second rotating section form a complete busbar; after rotating 180 degrees, the rotating section busbar runs to a position symmetrical to the center, so that the first fixed section and the second rotating section form a complete busbar, and the second fixed section and the first rotating section form a complete busbar.

[0070] Preferably, the rotating frame is bolted to the inner ring (or outer ring) of the bearing through a flange, and the fixed frame is bolted to the outer ring (or inner ring) of the bearing through a flange. To ensure connection accuracy and prevent slippage after fixation, precise positioning pins are set on the flange connecting the rotating frame and the bearing, and precise positioning pins are set on the flange connecting the fixed frame and the bearing. The number of positioning pins is at least 2.

[0071] The implementation method of the rotary track changing device comprises the following steps:

[0072] S1. Install and fix the rotary track changing device at the position where the track needs to be changed, turn on the power, and complete mechanical and electrical debugging;

[0073] S2. When the cage running along the track needs to change the track, it runs to the rotating frame and is connected and fixed thereto;

[0074] S3, releasing the lock of the rotating frame and the fixed frame (in this embodiment, the latch is driven to pull out the latch);

[0075] S4. The cage rotates 180 degrees around the rotating axis together with the rotating frame (in this embodiment, the rotating frame is driven by the rotating drive mechanism to drive the bearing, and the rotation angle is controlled by the angle sensor. At the same time, the power supply device is used to ensure that the rotation process is not interrupted, and the central symmetrical track and busbar are connected intelligently and accurately), and then the ladder cage is switched from one track to another track;

[0076] S5. Lock the rotating frame and the fixed frame (in this embodiment, the latch is inserted by a latch drive, and the front end of the latch is conical, which can self-correct the rotation angle).

[0077] The whole process is repeated cyclically, thus realizing the cyclic operation of the entire single-tower multi-cage elevator.

[0078] Since the main guide frame 2 and the secondary guide frame 3 used as a circulating elevator are fixed as a whole by the connecting rod 4, when the temperature rises, the main guide frame 2 and the secondary guide frame 3 expand due to the temperature rise and become longer. Since the base 11 limits the downward movement of the main guide frame 2, the main guide frame 2 and the secondary guide frame 3 deform upward together. At this time, the secondary guide frame 3 slides upward along the unloading attachment frame 1 under the action of the wheel group 8. At the same time, the counterweight 5 moves downward under the action of the pulley 6 and provides a constant vertical force all the time to achieve segmented unloading, and can release the temperature stress brought to the main guide frame 2 due to the temperature rise, thereby ensuring the safe operation of the construction elevator.

[0079] When the temperature drops, the main guide frame 2 and the secondary guide frame 3 shrink due to the temperature drop and their length becomes smaller. Since the base 11 limits the downward movement of the main guide frame 2, the main guide frame 2 and the secondary guide frame 3 deform downward together. At this time, the secondary guide frame 3 slides downward along the unloading attachment frame 1 under the action of the wheel group 8. At the same time, the counterweight 5 moves upward under the action of the pulley 6 and provides a constant vertical force all the time to achieve segmented unloading, and can release the temperature stress brought to the main guide frame 2 due to temperature rise, thereby ensuring the safe operation of the construction elevator.

[0080] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A counterweight-type segmented unloading temperature-adaptive construction elevator, comprising a double-tower lifting structure composed of a main rail frame and a secondary rail frame, a cage is arranged on the main rail frame; the main rail frame and the secondary rail frame are both spliced ​​by a plurality of standard sections, Features: An unloading attachment frame is arranged on the secondary guide rail frame at every one or more standard sections along the vertical direction, a counterweight is arranged at one end of the unloading attachment frame, and the other end is fixed on a vertical structure spaced apart from the secondary guide rail frame, and the unloading attachment frame embraces and clamps the secondary guide rail frame from the periphery; The bottom or lower part of the main rail frame is rigidly fixed to the vertical structure or the ground; The main guide frame and the secondary guide frame are fixed together by a connecting rod, and the counterweight is connected to the connecting rod through a traction rope pulley mechanism; The unloading attachment frame clamps the four supporting columns of the standard section of the secondary guide frame from the outside through the clamping wheel group arranged on the frame body, and the three outer sides of each column are in clamping contact with a clamping wheel of the clamping wheel group; At least one standard section in the main rail frame is replaced with a rotating track-changing section, so that the main rail frame is composed of a standard section and a rotating track-changing section. At the position of the rotating track-changing section, the cage can be switched from the track on one side to the track on the other side through the rotating track-changing section.

2. The temperature-adaptive construction elevator with counterweight and staged unloading according to claim 1, Features: The unloading attachment frame is a truss-shaped frame, and the section of the frame that cooperates with the secondary guide rail frame is a rectangular hexahedral frame. Three holding wheels are arranged at the top and bottom of the hexahedral frame at the contact points with the four supporting columns of the secondary guide rail frame to form a holding wheel group, wherein the wheel axles of two holding wheels extend parallel to the hexahedral frame and the wheel surfaces are arranged opposite to each other at intervals, and the other holding wheel is arranged above the root of the wheel axles of the first two holding wheels and the wheel surface is located laterally between the two holding wheels, so that the three holding wheels clamp and hold the corresponding columns from the three outer sides respectively, so that the secondary guide rail frame can slide vertically along the unloading attachment frame between the holding wheel groups.

3. The temperature-adaptive construction elevator with counterweight and staged unloading according to claim 1, Features: The counterweight is suspended on the unloading attachment frame through a pulley and is located in the gap between the main guide frame and the secondary guide frame.

4. The temperature-adaptive construction elevator with counterweight and staged unloading according to claim 1, Features: A plurality of connecting rods are evenly spaced between the main guide frame and the secondary guide frame in the vertical direction.

5. The temperature-adaptive construction elevator with counterweight and staged unloading according to claim 1, Features: The other end of the unloading attachment frame is fixedly connected to a vertical structure spaced apart from the secondary guide rail frame through a connecting piece.

6. The temperature-adaptive construction elevator with counterweight and staged unloading according to claim 1, Features: The counterweight is of container type or block-shaped stacked type.

7. The temperature-adaptive construction elevator with counterweight and staged unloading according to claim 1, Features: The rotating track-changing section comprises a fixed frame, a rotating frame and a track; wherein the fixed frame comprises an upper fixed transition section and a lower fixed transition section; the rotating frame comprises an upper rotating transition section, an intermediate section and a lower rotating transition section which are sequentially connected from top to bottom, and the upper rotating transition section and the upper fixed transition section, and the lower rotating transition section and the lower fixed transition section are respectively connected in rotation via bearings, and are locked via a rotating locking device, and the rotating frame rotates along the rotating axis where the bearings are located; the tracks are two tracks which are symmetrical along the center of the rotating axis, and both tracks comprise a fixed frame section and a rotating frame section, the fixed frame section is fixed on the upper and lower fixed transition sections, the rotating frame section is fixed on the rotating frame, and the track is connected as a whole with the track on the standard section for the cage to move up and down; the rotating locking device has two states, locked and unlocked, in the locked state, the rotating frame and the fixed frame are relatively stationary, and the cage moves up and down along the two tracks; in the unlocked state, the cage rotates 180 degrees around the rotating axis together with the rotating frame on the rotating frame section of one of the tracks.

8. A method for implementing the construction elevator according to any one of claims 1 to 7, Features: When the temperature rises, the main rail frame and the secondary rail frame expand due to the temperature rise and become longer. Since the base restricts the downward movement of the main rail frame, the main rail frame and the secondary rail frame deform upward together. At this time, the secondary rail frame slides upward along the unloading attachment frame. At the same time, the counterweight moves downward and provides a constant vertical force to achieve segmented unloading and release the temperature stress caused by the temperature rise to the main rail frame, ensuring the safe operation of the construction hoist. When the temperature drops, the main guide frame and the secondary guide frame shrink due to the temperature drop and their length becomes smaller. Since the base limits the downward movement of the main guide frame, the main guide frame and the secondary guide frame deform downward together. At this time, the secondary guide frame slides downward along the unloading attachment frame. At the same time, the counterweight moves upward and provides a constant vertical force to achieve segmented unloading, and can release the temperature stress brought to the main guide frame due to temperature rise, ensuring the safe operation of the construction elevator.

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