Cantilever beam mounting and heightening method and adjustable jig frame structure

Abstract

The invention discloses a cantilever beam mounting and height adjusting method and an adjustable jig frame structure, and solves the problems of long construction period, high construction cost and the like caused by difficulty in adjusting the height of a cantilever beam jig frame and need of a disposable foundation during use. The method comprises the steps that the distance measuring instruments are arranged at the fixed ends of the cantilever beams respectively, the height-adjustable jig frames are correspondingly arranged at the cantilever ends of the cantilever beams, and the heights of the fixed ends of the cantilever beams are adjusted based on the step that the distance measuring instruments obtain measured values. The adjustable jig frame structure comprises a basic jig frame section and a group of middle jig frame sections, and a height adjusting jig frame section is arranged on the middle jig frame section on the top layer. The height adjusting jig frame section comprises a height adjusting jig frame section frame, a supporting height fine adjusting mechanism, a jig frame section height adjusting mechanism and a one-way locking mechanism. The method has the beneficial effects of simple method, low equipment investment, convenience in installation and use, low foundation installation requirement and short construction period.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, in particular to a cantilever beam installation height adjustment method and an adjustable tire frame structure. Background Art

[0002] Steel structure buildings have the advantages of short construction period and diverse shapes. Steel structure buildings have been widely popularized, especially in the construction of buildings with external cantilever structures based on towers or pylons. The basic cantilever beam of the external cantilever structure has the characteristics of its own weight and long cantilever. For example, in a project in Shenzhen undertaken by the applicant, the basic cantilever beam has its own weight of dozens of tons and the cantilever length is nearly 30 meters. In order to ensure that the cantilever beam is prevented from bending downward due to its own weight and the fixed end is subjected to greater bending stress during and after the installation of a single cantilever beam, the existing technology uses a fixed cantilever beam frame with the height of the pad determined at one time to support the cantilever end of the cantilever beam.

[0003] The disadvantage of using a fixed cantilever beam cradle is that the cantilever beam cradle is required to have a solid one-time foundation to prevent the cantilever beam cradle from sinking, especially when installing structural parts on the cantilever beam. As the load borne by the local cantilever beam increases, the posture of the cantilever beam will change beyond the design requirements. When the posture of the cantilever beam (the height change at one end of the cantilever beam caused by the cantilever beam's own gravity and the weight of the load) cannot meet the design requirements, it becomes extremely difficult to adjust the posture of the cantilever beam. Summary of the invention

[0004] In order to solve the shortcomings of the existing cantilever beam cradle, such as difficulty in adjusting the height, long construction period and high construction cost caused by the need for a one-time foundation when in use, the present invention discloses a cantilever beam installation height adjustment method and an adjustable cradle structure.

[0005] The invention aims to realize the cantilever beam height adjustment method by adopting the following method: Step 1. Set the transmitting sensor and receiving sensor of the distance measuring instrument on the fixed ends of a group of cantilever beams to be installed; Step 2. The cantilever ends of a group of cantilever beams to be installed are respectively provided with height-adjustable tire frames, and the support end of the height-adjustable tire frame on the cantilever beam is an electrically controlled worm jack supporting the roller structure; Step 3. Based on the installation position and installation posture of the cantilever beam, determine the standard height value of the height of the height-adjustable tire frame support roller axis, set the installation error threshold between the transmitting sensor of the distance measuring instrument set at the fixed end of the cantilever beam and the height-adjustable tire frame support roller axis according to the standard height value, and store the error threshold in the height control system, and fix the height of the height-adjustable tire frame position and the support roller axis one by one according to the standard height value and the error threshold; Step 4. Overlap the cantilever end of the first cantilever beam on the adjustable tire frame support roller, pre-connect the fixed end of the cantilever beam with the support frame, adjust the position of the fixed end of the cantilever beam to meet the error threshold, and then lock and fix the fixed end of the cantilever beam; Step 5. Complete the installation of cantilever beams one by one according to step 4; Step 6. During the construction process of installing the frame on the cantilever beam, the height control system collects data on the error threshold of each cantilever beam in real time through the distance measuring instrument. When the collected data exceeds the error threshold, the height control system starts the corresponding adjustable tire frame height adjustment mechanism or electric-controlled worm jack to change the posture of the cantilever beam to meet the error threshold within the design range.

[0006] The structure adopted by the present invention to achieve the purpose of the adjustable tire frame structure is: comprising: a basic tire frame section and a group of intermediate tire frame sections, wherein the basic tire frame section and the group of intermediate tire frame sections are vertically fixedly connected at a required support height.

[0007] The top middle tire frame section is provided with a height-adjusting tire frame section.

[0008] The height-adjustable tire frame section comprises: a height-adjustable tire frame section frame, a support height fine-adjusting mechanism, a tire frame section height-adjusting mechanism and a one-way locking mechanism.

[0009] The support height fine-tuning mechanism comprises: an electric-controlled worm jack and a support roller, the support roller is connected to the lifting worm of the electric-controlled worm jack, and the support height fine-tuning mechanism is arranged on the tire frame section height adjustment mechanism.

[0010] The tire frame section height adjustment mechanism comprises: a pair of locking slide columns and a pair of active slide columns, a guide rail, a height adjustment power part, a height adjustment gear, a height adjustment support plate and a slide column connecting plate.

[0011] The pair of locking slide columns and the pair of active slide columns are symmetrically arranged respectively, the locking slide column and the active slide column are connected to form an integral structure via a slide column connecting plate, the locking slide column and the active slide column are respectively slidably connected with the corresponding guide rails, and the electrically controlled worm jack in the support height fine-tuning mechanism is fixed on the slide column connecting plate.

[0012] The locking slide post is provided with ratchet teeth along the length direction, and the active slide post is provided with racks along the length direction.

[0013] The guide rail is fixed on the height-adjusting support plate, and the height-adjusting support plate is fixedly connected with the height-adjusting tire frame section frame.

[0014] The height-adjusting power part is fixedly mounted on the height-adjusting support plate, and the output shaft of the height-adjusting power part is coaxially connected with a pair of height-adjusting gears, and the pair of height-adjusting gears are respectively meshed with racks on the active sliding column.

[0015] The one-way locking mechanism is respectively arranged corresponding to a pair of locking slide columns, and the one-way locking mechanism includes: a one-way locking pawl and a pawl seat. The one-way locking pawl is rotatably installed on the pawl seat through a torsion spring. The one-way locking pawl is engaged with the ratchet on the locking slide column, and the pawl seat is fixed on the height adjustment support plate.

[0016] The invention has the following beneficial effects: the method is simple, the equipment investment is small, and the posture of the cantilever beam itself and the bearing structure on the cantilever beam can be accurately adjusted during the whole process of installation. The disclosed adjustable tire frame structure has a support height fine-tuning mechanism and a tire frame section height adjustment mechanism, which meets the use needs of adjusting a single cantilever beam and a group of cantilever beams with different support heights due to the sinking of the tire frame foundation. The adjustable tire frame structure has high versatility, is easy to install and use, has low installation foundation requirements, greatly shortens the construction period, and can be widely used for the installation and use of large-size cantilever beams.

[0017] The present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 Schematic diagram of an application embodiment of the present invention.

[0019] Attached Figure 2 Schematic diagram of the height-adjustable tire frame and cantilever beam support of the present invention.

[0020] Attached Figure 3 For attachment Figure 2 Schematic diagram of direction A.

[0021] Attached Figure 4 Schematic diagram of the height-adjustable tire frame structure of the present invention.

[0022] Attached Figure 5 For attachment Figure 4 Schematic diagram of the BB cross-sectional structure.

[0023] Attached Figure 6 For attachment Figure 5 Schematic diagram of the enlarged CC section structure.

[0024] In the attached drawings, 1. middle tire frame section, 2. height-adjusting tire frame section, 2-1. height-adjusting tire frame section frame, 2-2. support height fine-tuning mechanism, 2-21. electric-controlled worm jack, 2-22. support roller, 2-211. lifting worm, 2-3. tire frame section height-adjusting mechanism, 2-31. locking slide column, 2-311. ratchet, 2-32 active slide column, 2-321 rack, 2-34. guide rail, 2-35. height-adjusting power part, 2-36. height-adjusting gear, 2-37. height-adjusting support plate, 2-38. slide column connecting plate, 2-4. one-way locking mechanism, 2-41. one-way locking ratchet, 2-42. ratchet seat, 3. basic tire frame section, 4 cantilever beam, 5. cantilever beam connecting tower.

[0025] Specific implementation method, referring to the attached drawings, a cantilever beam installation height adjustment method, the method is based on a set of height adjustable tire frame, distance measuring instrument and height adjustment control system, the method is implemented by the following steps: Step 1. Set the transmitting sensors of the distance measuring instrument on the fixed ends of a group of cantilever beams to be installed.

[0026] Step 2. Set height-adjustable frames respectively at the cantilever ends of a group of cantilever beams to be installed. The support end of the height-adjustable frame for the cantilever beam is an electrically controlled worm jack of a supporting roller structure, and a receiving sensor of a distance measuring instrument is set at the axial position of the supporting roller.

[0027] When in use, the distance change between the transmitting sensor and the receiving sensor (the axial position of the support roller) is measured in real time through a distance measuring instrument to determine the height change value of the support roller (the sinking change of the height-adjustable tire frame under the gravity of the cantilever beam) as the basis for controlling the height adjustment.

[0028] Step 3. Based on the installation position and installation posture of the cantilever beam, determine the standard height value of the height-adjustable tire frame support roller axis, set the installation error threshold between the distance measuring instrument transmitting sensor set at the fixed end of the cantilever beam and the height-adjustable tire frame support roller axis according to the standard height value, and store the error threshold in the height adjustment control system, and fix the height of the height-adjustable tire frame position and the support roller axis one by one according to the standard height value and the error threshold.

[0029] The height standard value is the design standard value, which can be adjusted to meet the design requirements.

[0030] Step 4. Overlap the cantilever end of the first cantilever beam on the adjustable tire frame support roller, pre-connect the fixed end of the cantilever beam with the support frame, adjust the position of the fixed end of the cantilever beam to meet the error threshold, and then lock the fixed end of the cantilever beam.

[0031] Before the cantilever beam is connected to the cantilever beam and the tower is finally fixed, the posture of the cantilever beam is adjusted in real time.

[0032] Step 5. Complete the installation of cantilever beams one by one according to step 4.

[0033] Step 6. During the construction process of installing the frame on the cantilever beam, the height control system collects data on the error threshold of each cantilever beam in real time through the distance measuring instrument. When the collected data exceeds the error threshold, the height control system starts the corresponding adjustable tire frame height adjustment mechanism or electric-controlled worm jack to change the posture of the cantilever beam to meet the error threshold within the design range.

[0034] In the embodiment of the present invention, due to the change in the posture of a cantilever beam caused by uneven force on a group of cantilever beams, in step six, the height adjustment control system starts the adjustable frame height adjustment mechanism or the electronically controlled worm jack corresponding to all cantilever beams based on the error threshold, so as to realize the unified linkage height adjustment of the relative position of the cantilever beams within the design range.

[0035] A cantilever beam mounted adjustable tire frame structure comprises: a basic tire frame section 3 and a group of intermediate tire frame sections 1, wherein the basic tire frame section 3 and the group of intermediate tire frame sections 1 are vertically fixedly connected at one time according to the required support height.

[0036] The top middle tire frame section 1 is provided with a height-adjusting tire frame section 2 .

[0037] The height-adjustable tire frame section 2 comprises: a height-adjustable tire frame section frame 2-1, a support height fine-adjusting mechanism 2-2, a tire frame section height-adjusting mechanism 2-3 and a one-way locking mechanism 2-4.

[0038] The support height fine-adjustment mechanism 2-2 is used for small-size height adjustment.

[0039] The tire frame section height adjustment mechanism 2-3 is used for large-size height adjustment, and the support height of the support height fine-adjustment mechanism 2-2 is reduced as much as possible to improve the support stability of the adjustable tire frame.

[0040] The support height fine-tuning mechanism 2-2 includes: an electrically controlled worm jack 2-21 and a support roller 2-22. The support roller 2-22 is connected to the lifting worm 2-211 of the electrically controlled worm jack 2-21. The support height fine-tuning mechanism 2-2 is arranged on the tire frame section height adjusting mechanism 2-3.

[0041] The purpose of setting the support roller 2-22 is to form a sliding support structure between the support roller 2-22 and the cantilever beam 4, reduce the lateral stress on the adjustable tire frame caused by the posture change of the cantilever beam 4, and reduce the resistance of the cantilever beam 4 when the position of the tower 5 connected to the cantilever beam is adjusted. At the same time, the change in the height of the axis of the support roller 2-22 is used as the basis for adjusting the posture of the cantilever beam 4.

[0042] The tire frame section height adjustment mechanism 2-3 includes: a pair of locking slide posts 2-31 and a pair of active slide posts 2-32, a guide rail 2-34, a height adjustment power part 2-35, a height adjustment gear 2-36, a height adjustment support plate 2-37 and a slide post connecting plate 2-38.

[0043] The pair of locking slides 2-31 and the pair of active slides 2-32 are symmetrically arranged, and the locking slide 2-31 and the active slide 2-32 are connected to form an integral structure via a slide connecting plate 2-38. The locking slide 2-31 and the active slide 2-32 are respectively slidably connected with the corresponding guide rails 2-34, and the electric-controlled worm jack 2-21 in the support height fine-tuning mechanism 2-2 is fixed on the slide connecting plate 2-38.

[0044] The locking slide 2-31 is provided with a ratchet 2-311 along the length direction, and the active slide 2-32 is provided with a rack 2-321 along the length direction.

[0045] The guide rail 2-34 is fixed on the height adjustment support plate 2-37, and the height adjustment support plate 2-37 is fixedly connected to the height adjustment tire frame section frame 2-1; The height-adjusting power part 2-35 is fixedly mounted on the height-adjusting support plate 2-37, and the output shaft of the height-adjusting power part 2-35 is coaxially connected with a pair of height-adjusting gears 2-36, and the pair of height-adjusting gears 2-36 are respectively meshed with the racks 2-321 on the active sliding column 2-32.

[0046] A height-adjusting tire frame section 2 is arranged on the basic tire frame section 3 and the top intermediate tire frame section 1 of a group of intermediate tire frame sections 1, so as to meet the auxiliary support needs of cantilever beams of any height and size.

[0047] When the height adjustment of the tire frame section 2 requires large-size adjustment, the height adjustment power part 2-35 is started, and the height adjustment gear 2-36 drives the active sliding column 2-32 along the guide rail 2-34, and the active sliding column 2-32 drives the locking sliding column 2-31 along the guide rail 2-34 through the sliding column connecting plate 2-38, thereby realizing the upward movement of the support height fine-tuning mechanism 2-2 and realizing the adjustment of the support height of the tire frame section 2.

[0048] The one-way locking mechanism 2-4 is respectively arranged corresponding to a pair of locking slide columns 2-31. The one-way locking mechanism 2-4 includes: a one-way locking pawl 2-41 and a pawl seat 2-42. The one-way locking pawl 2-41 is rotatably installed on the pawl seat 2-42 via a torsion spring. The one-way locking pawl 2-41 is engaged with the ratchet 2-311 on the locking slide column 2-31, and the pawl seat 2-42 is fixed on the height adjustment support plate 2-37.

[0049] When the support height fine-adjustment mechanism 2-2 moves upward, the one-way locking pawl 2-41 leaves the ratchet 2-311, and when the support height fine-adjustment mechanism 2-2 moves downward in the opposite direction, the one-way locking pawl 2-41 engages with the ratchet 2-311 to form a lock.

[0050] The height-adjusting power part 2-35 of the height-adjusting tire frame section 2 described in the embodiment of the present invention is composed of a motor and a dual-output reducer.

Claims

1. A cantilever beam installation height adjustment method, which is based on a set of height-adjustable tire frames, distance measuring instruments and height adjustment control systems, and is characterized by: The method is implemented by the following steps: Step 1. Set the transmitting sensor and receiving sensor of the distance measuring instrument on the fixed ends of a group of cantilever beams to be installed; Step 2. The cantilever ends of a group of cantilever beams to be installed are respectively provided with height-adjustable tire frames, and the support end of the height-adjustable tire frame on the cantilever beam is an electrically controlled worm jack supporting the roller structure; Step 3. Based on the installation position and installation posture of the cantilever beam, determine the standard height value of the height of the height-adjustable tire frame support roller axis, set the installation error threshold between the transmitting sensor of the distance measuring instrument set at the fixed end of the cantilever beam and the height-adjustable tire frame support roller axis according to the standard height value, and store the error threshold in the height control system, and fix the height of the height-adjustable tire frame position and the support roller axis one by one according to the standard height value and the error threshold; Step 4. Overlap the cantilever end of the first cantilever beam on the adjustable tire frame support roller, pre-connect the fixed end of the cantilever beam with the support frame, adjust the position of the fixed end of the cantilever beam to meet the error threshold, and then lock and fix the fixed end of the cantilever beam; Step 5. Complete the installation of cantilever beams one by one according to step 4; Step 6. During the construction process of installing the frame on the cantilever beam, the height control system collects data on the error threshold of each cantilever beam in real time through the distance measuring instrument. When the collected data exceeds the error threshold, the height control system starts the corresponding adjustable tire frame height adjustment mechanism or electric-controlled worm jack to change the posture of the cantilever beam to meet the error threshold within the design range.

2. A cantilever beam installation height adjustment method according to claim 1, characterized in that: In step six, the height adjustment control system starts the adjustable frame height adjustment mechanism or the electronically controlled worm jack corresponding to all cantilever beams based on the error threshold, so as to realize the unified linkage height adjustment of the relative position of the cantilever beams within the design range.

3. A cantilever beam mounted adjustable tire frame structure, comprising: A basic tire frame section and a group of intermediate tire frame sections, wherein the basic tire frame section and the group of intermediate tire frame sections are vertically fixedly connected at a time according to the required support height, characterized in that: The top intermediate tire frame section (1) is provided with a height-adjusting tire frame section (2): The height-adjustable tire frame section (2) comprises: a height-adjustable tire frame section frame (2-1), a support height fine-adjustment mechanism (2-2), a tire frame section height-adjustment mechanism (2-3) and a one-way locking mechanism (2-4); The support height fine-adjustment mechanism (2-2) comprises: an electrically controlled worm jack (2-21) and a support roller (2-22); the support roller (2-22) is connected to a lifting worm (2-211) of the electrically controlled worm jack (2-21); and the support height fine-adjustment mechanism (2-2) is arranged on the tire frame section height adjustment mechanism (2-3); The tire frame section height adjustment mechanism (2-3) comprises: a pair of locking slide columns (2-31) and a pair of active slide columns (2-32), a guide rail (2-34), a height adjustment power part (2-35), a height adjustment gear (2-36), a height adjustment support plate (2-37) and a slide column connecting plate (2-38); The pair of locking slide columns (2-31) and the pair of active slide columns (2-32) are symmetrically arranged respectively, the locking slide columns (2-31) and the active slide columns (2-32) are connected to form an integral structure via a slide column connecting plate (2-38), the locking slide columns (2-31) and the active slide columns (2-32) are slidably connected to corresponding guide rails (2-34) respectively, and the electric-controlled worm jack (2-21) in the support height fine-tuning mechanism (2-2) is fixed on the slide column connecting plate (2-38); The locking sliding column (2-31) is provided with ratchet teeth (2-311) along the length direction, and the active sliding column (2-32) is provided with a rack (2-321) along the length direction; The guide rail (2-34) is fixed on the height-adjusting support plate (2-37), and the height-adjusting support plate (2-37) is fixedly connected to the height-adjusting tire frame section frame (2-1); The height adjustment power part (2-35) is fixedly mounted on the height adjustment support plate (2-37); the output shaft of the height adjustment power part (2-35) is coaxially connected to a pair of height adjustment gears (2-36); and the pair of height adjustment gears (2-36) are respectively meshed with racks (2-321) on the active sliding column (2-32); The one-way locking mechanism (2-4) is respectively arranged corresponding to a pair of locking slide columns (2-31), and the one-way locking mechanism (2-4) comprises: a one-way locking pawl (2-41) and a pawl seat (2-42), the one-way locking pawl (2-41) is rotatably mounted on the pawl seat (2-42) via a torsion spring, the one-way locking pawl (2-41) is meshed with a ratchet (2-311) on the locking slide column (2-31), and the pawl seat (2-42) is fixedly mounted on the height adjustment support plate (2-37).

4. The adjustable tire frame structure for cantilever beam installation according to claim 1 is characterized in that: The height-adjusting power part (2-35) of the height-adjusting tire frame section (2) is composed of a motor and a dual-output reducer.

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