Dismounting and changing beam for elevator shaft

Abstract

The utility model relates to the field of building construction engineering, in particular to a dismounting and changing beam for an elevator shaft. Comprising a plurality of longitudinal bars arranged on the upper side and the lower side of an original frame beam at intervals, the longitudinal bars on the lower side are arranged in the design range of the dismantling and changing beam, and the design height is larger than the height of the bottom side of the original frame beam and meets the height of an elevator door; the stirrups are arranged on the upper side and the lower side of the original frame beam at intervals, and the stirrups are implanted into the original frame beam and fixedly connected with the original stirrups; the reinforcing ribs are distributed on the lower side of the original frame beam at intervals, one ends of the reinforcing ribs are embedded into the corresponding frame columns, the other ends of the reinforcing ribs are fixedly connected with the corresponding longitudinal ribs, and the design width of the reinforcing ribs meets the width of the elevator door; and the concrete is poured at the design position of the dismantling and changing beam on the lower side of the original frame beam. The elevator door has the beneficial effects that the longitudinal bars and the stirrups are implanted into the lower side of the original frame beam, so that the longitudinal bars and the stirrups are in the design range of disassembling and changing the beam, and meanwhile, the longitudinal bars and the stirrups are higher than the bottom of the original frame beam, so that the height of the door opening is increased to meet the height of the elevator door.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building construction engineering especially a dismantling and modifying beam for elevator shaft. BACKGROUND

[0002] When the elevator beam in the elevator shaft does not satisfy the net height of the door hole, the elevator beam needs to be removed and the elevator beam is recast, so that the height of the elevator door hole satisfies the height of the elevator door. The traditional beam dismantling and modifying of the elevator shaft all adopt the mode that after the original elevator beam in the elevator shaft is removed, the whole frame beam is constructed. However, when the roof has different elevations, there are upper turned edge beams and secondary beams, and the construction is more difficult.

[0003] Therefore, the utility model provides a dismantling and modifying beam for elevator shaft. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the defects of the prior art, providing a dismantling and modifying beam for elevator shaft, solving the problem that when the existing elevator beam is dismantled and modified, the construction is difficult when the roof has different elevations.

[0005] The utility model provides a dismantling and modifying beam for elevator shaft, and the technical scheme is: including: a plurality of longitudinal reinforcements which are arranged at intervals on the upper and lower sides of the original frame beam, the longitudinal reinforcement on the lower side is arranged in the design range of the dismantling and modifying beam, and the design height is higher than the height of the bottom side of the original frame beam and satisfies the height of the elevator door; hoop reinforcements which are arranged at intervals on the upper and lower sides of the original frame beam and are fixedly connected with the corresponding longitudinal reinforcements, the hoop reinforcements are implanted into the original frame beam and are fixedly connected with the original hoop reinforcements; a plurality of reinforcing bars which are arranged at intervals on the lower side of the original frame beam, one end of the reinforcing bar is implanted into the corresponding frame column, the other end is fixedly connected with the corresponding longitudinal reinforcement, and the design width of the reinforcing bar satisfies the width of the elevator door; and concrete which is poured at the design position of the dismantling and modifying beam on the lower side of the original frame beam.

[0006] Further, the reinforcing bar comprises a first horizontal part, a vertical part and a second horizontal part, one end of the first horizontal part is implanted into the corresponding frame column, the lower end of the vertical part is fixedly connected with the free end of the first horizontal part, and the design position of the vertical part satisfies the width of the elevator door, the second horizontal part is fixedly arranged at the upper end of the vertical part and faces away from the side of the first horizontal part, and the second horizontal part is fixedly connected with the longitudinal reinforcement.

[0007] Further, the size of the hoop reinforcement at the reinforcing bar is larger than the size of the hoop reinforcement at the longitudinal reinforcement.

[0008] Further, the design height of the longitudinal reinforcement on the upper side of the original frame beam is flush with the top surface of the floor.

[0009] Further, a plurality of reinforcing bars are arranged on the upper and lower sides of the original frame beam, the first end of the reinforcing bar is embedded in the original frame beam, the second end is provided with a hook portion, and the hook portion is hooked on the corresponding longitudinal reinforcement.

[0010] Further, an anchoring plate is arranged on the side of the corresponding frame column, and the two ends of the longitudinal reinforcement on the upper side of the original frame beam penetrate the corresponding frame column and are fixedly connected with the corresponding anchoring plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By embedding the longitudinal reinforcement and the stirrup on the lower side of the original frame beam, the longitudinal reinforcement and the stirrup are within the design range of the modified beam, and the height of the longitudinal reinforcement and the stirrup is higher than the bottom of the original frame beam, so that the height of the door opening is increased to meet the height of the elevator door. In addition, the longitudinal reinforcement and the stirrup are embedded on the upper side of the original frame beam to improve the structural strength of the modified beam.

[0013] By arranging the reinforcing rib, the reinforcing rib improves the structural strength of the modified beam while meeting the width of the elevator door. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a sectional view of the modified beam for the elevator shaft of the utility model.

[0015] Figure 2 It is a schematic view of the original structure beam of the modified beam for the elevator shaft of the utility model.

[0016] Figure 3 It is a sectional view of the modified beam for the elevator shaft of the utility model. Figure 1 1-1 of the utility model.

[0017] Figure 4 It is a sectional view of the modified beam for the elevator shaft of the utility model. Figure 1 2-2 of the utility model.

[0018] Legend: 1, frame column; 2, longitudinal reinforcement; 3, stirrup; 4, anchoring plate; 5, reinforcing rib; 6, original frame beam; 7, reinforcing bar. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and specific embodiments.

[0020] Reference Figure 1This utility model provides a modified beam for elevator shafts, solving the problem of construction difficulties when modifying existing elevator beams due to differences in roof elevation. By inserting longitudinal reinforcement and stirrups into the lower side of the original frame beam, ensuring these reinforcements are within the design range of the modified beam, and with their height exceeding the bottom of the original frame beam, the height of the doorway is increased to meet the height requirements of the elevator door. Furthermore, longitudinal reinforcement and stirrups are also inserted into the upper side of the original frame beam to improve the structural strength of the modified beam. By adding reinforcing ribs, the structural strength of the modified beam is improved while also meeting the width requirements of the elevator door.

[0021] The following description, in conjunction with the accompanying drawings, illustrates a modified beam for elevator shafts according to this utility model.

[0022] See Figure 1 The image shows a cross-sectional view of the beam used in the modification of an elevator shaft according to this utility model. (See also...) Figure 2 This shows a schematic diagram of the original structural beam used in the demolition and modification of the beam in an elevator shaft according to this utility model. (See also...) Figure 3 This demonstrates the application of this utility model to the demolition and alteration beams of elevator shafts. Figure 1 Section 1-1. See section 1-1. Figure 4 This demonstrates the application of this utility model to the demolition and alteration beams of elevator shafts. Figure 1 Section 2-2. The following is in conjunction with... Figures 1 to 4 This invention describes a demolition and modification beam for elevator shafts.

[0023] like Figures 1 to 4 As shown, this utility model discloses a modified beam for an elevator shaft, comprising: a plurality of longitudinal reinforcement bars 2 spaced apart on the upper and lower sides of the original frame beam 6, wherein the lower longitudinal reinforcement bars 2 are located within the design range of the modified beam and the design height is higher than the bottom height of the original frame beam 6 and meets the height of the elevator door; stirrups 3 spaced apart on the upper and lower sides of the original frame beam 6 and fixedly connected to the corresponding longitudinal reinforcement bars 2, wherein the stirrups 3 are embedded in the original frame beam 6 and fixedly connected to the original stirrups; a plurality of reinforcing bars 5 spaced apart on the lower side of the original frame beam 6, wherein one end of the reinforcing bars 5 is embedded in the corresponding frame column 1 and the other end is fixedly connected to the corresponding longitudinal reinforcement bar 2, and the design width of the reinforcing bars 5 meets the width of the elevator door; and concrete is poured at the design position of the modified beam on the lower side of the original frame beam 6.

[0024] In one specific embodiment, a portion of the bottom of the original frame beam 6 is removed, and the height after removal is higher than the height of the elevator door.

[0025] In one specific embodiment, the longitudinal reinforcement 2 and the stirrup 3 are fixed by binding wire.

[0026] In one specific embodiment, when the original frame beam 6 is being dismantled, the original stirrups are cut so that the original stirrups are within the design range of the beam being dismantled and modified. After the stirrups 3 are inserted into the original frame beam 6, they are fixed to the original stirrups by welding them to both sides of the connection.

[0027] In a preferred embodiment, the longitudinal reinforcement 2 and the stirrup 3 are HRB400.

[0028] In one specific embodiment, the reinforcing rib 5 includes a first horizontal part, a vertical part, and a second horizontal part. One end of the first horizontal part is inserted into the corresponding frame column 1. The lower end of the vertical part is fixedly connected to the free end of the first horizontal part, and the design position of the vertical part meets the width of the elevator door. The second horizontal part is fixedly disposed at the upper end of the vertical part and faces away from the first horizontal part. The second horizontal part is fixedly connected to the longitudinal rib 2.

[0029] In one specific embodiment, the size of the stirrup 3 at the reinforcing rib 5 is larger than the size of the stirrup 3 at the longitudinal rib 2.

[0030] In one specific embodiment, the design height of the longitudinal reinforcement 2 on the upper side of the original frame beam 6 is flush with the top surface of the floor slab.

[0031] In one specific embodiment, it also includes concrete poured on the upper side of the original frame beam 6, the height of the poured concrete being flush with the top of the floor slab.

[0032] In a preferred embodiment, the concrete strength grade is C35.

[0033] In one specific embodiment, it also includes a plurality of tie rods 7, which are distributed at intervals on the upper and lower sides of the original frame beam 6. The first end of the tie rod 7 is inserted into the original frame beam 6, and the second end is provided with a hook portion, which is hooked onto the corresponding longitudinal reinforcement 2.

[0034] In one specific embodiment, it also includes an anchor plate 4 disposed on the side of the corresponding frame column 1, and the two ends of the longitudinal reinforcement 2 on the upper side of the original frame beam 6 pass through the corresponding frame column 1 and are fixedly connected to the corresponding anchor plate 4.

[0035] In a preferred embodiment, the anchor plate 4 is made of Q355B grade steel.

[0036] In one specific embodiment, holes are drilled at corresponding positions of the two frame columns 1, and then the longitudinal reinforcement 2 is inserted. During insertion, Class A anchoring adhesive is sprayed into the drilled holes.

[0037] The following is a detailed description of the construction process of a demolition and modification beam for an elevator shaft according to this utility model.

[0038] Based on the height of the elevator doorway, the bottom of the original frame beam 6 is removed, with the removal height exceeding the height of the elevator doorway. Then, the corresponding positions of the original frame beam 6 and frame column 1 are roughened. Simultaneously, a portion of the original stirrups within the original frame beam 6 is removed, ensuring the original stirrups are within the design range of the altered beam.

[0039] Drill holes at the construction location of frame column 1, then spray Class A anchoring adhesive into the holes, and then insert the ends of longitudinal bars 2 into the holes.

[0040] When drilling holes in the frame column 1 on the upper side of the original frame beam 6, the holes need to penetrate the frame column 1 and the anchor plate 4 needs to be installed on the frame column 1. When inserting the longitudinal reinforcement 2 into the hole, the longitudinal reinforcement 2 should pass through the anchor plate 4 and the anchor plate 4 should be fixed to the longitudinal reinforcement 2.

[0041] When the reinforcing rib 5 is implanted, the second horizontal part of the reinforcing rib 5 is fixedly connected to the longitudinal rib 2.

[0042] The hook of the tie bar 7 is hung on the corresponding longitudinal reinforcement 2, and the tie bar 7 is implanted into the original frame beam 6 by drilling and spraying Class A anchoring adhesive.

[0043] Then, stirrups 3 are inserted on both the upper and lower sides of the original frame beam 6 using the above methods, and the stirrups 3 and longitudinal bars 2 are tied and fixed with binding wire.

[0044] Formwork was erected on the upper and lower sides of the original frame beam 6, and concrete was poured on the lower side of the original frame beam 6 to form a demolition beam with the original frame beam 6. The bottom of the demolition beam was flush with the elevator door, and the concrete poured on the upper side was flush with the floor slab.

[0045] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A demolition and alteration beam for elevator shafts, characterized in that: include: Several longitudinal bars (2) are spaced out on the upper and lower sides of the original frame beam (6). The longitudinal bars (2) on the lower side are located within the design range of the demolition beam, and the design height is higher than the bottom height of the original frame beam (6) and meets the height of the elevator door. Stirrups (3) are arranged at intervals on the upper and lower sides of the original frame beam (6) and are fixed to the corresponding longitudinal bars (2). The stirrups (3) are inserted into the original frame beam (6) and fixed to the original stirrups. Several reinforcing bars (5) are spaced apart on the underside of the original frame beam (6). One end of the reinforcing bar (5) is inserted into the corresponding frame column (1), and the other end is fixedly connected to the corresponding longitudinal bar (2). The design width of the reinforcing bar (5) meets the width of the elevator door. The concrete is poured at the design location of the demolished beam below the original frame beam (6).

2. The demolition and alteration beam for elevator shafts according to claim 1, characterized in that: The reinforcing rib (5) includes a first horizontal part, a vertical part and a second horizontal part, and one end of the first horizontal part is inserted into the corresponding frame column (1); The lower end of the vertical part is fixedly connected to the free end of the first horizontal part, and the design position of the vertical part meets the width of the elevator door; The second horizontal part is fixed at the upper end of the vertical part and faces away from the first horizontal part. The second horizontal part is fixedly connected to the longitudinal rib (2).

3. The demolition and alteration beam for elevator shafts according to claim 1, characterized in that: The size of the stirrup (3) at the reinforcing bar (5) is larger than the size of the stirrup (3) at the longitudinal bar (2).

4. A demolition and alteration beam for elevator shafts according to claim 1, characterized in that: The design height of the longitudinal reinforcement (2) on the upper side of the original frame beam (6) is flush with the top surface of the floor slab.

5. A demolition and alteration beam for elevator shafts according to claim 4, characterized in that: It also includes several tie rods (7), which are distributed at intervals on the upper and lower sides of the original frame beam (6). The first end of the tie rod (7) is inserted into the original frame beam (6), and the second end is provided with a hook, which is hooked on the corresponding longitudinal reinforcement (2).

6. A demolition and alteration beam for elevator shafts according to claim 1, characterized in that: It also includes anchor plates (4) provided on the side of the corresponding frame column (1), and the two ends of the longitudinal reinforcement (2) on the upper side of the original frame beam (6) pass through the corresponding frame column (1) and are fixedly connected to the corresponding anchor plates (4).

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