Safety protection device for building construction elevator shaft

Abstract

The utility model discloses a building construction elevator shaft safety protection device which comprises a bearing platform and a supporting component, the supporting component comprises a vertical keel and an inclined keel, the upper end of the vertical keel and the upper end of the inclined keel are both fixed to the lower side of the bearing platform, and the lower end of the inclined keel is fixed to the lower portion of the vertical keel. A supporting bracket is arranged on the front side of the lower portion of the vertical keel and comprises a supporting leg, a supporting arm and a tension spring, the rear end of the supporting leg is hinged to the vertical keel, a sliding groove extending in the axial direction is formed in the supporting leg, the supporting arm is arranged on the upper side of the supporting leg, the inclined upper end of the supporting arm is hinged to the vertical keel, and a sliding shaft matched with the interior of the sliding groove is arranged at the inclined lower end of the supporting arm. When the sliding shafts slide to the front ends of the sliding grooves, the supporting legs are in a horizontal state, pull arms extending upwards are arranged at the inclined upper ends of the supporting arms, and the tension springs are connected between the upper ends of the pull arms and the inclined keels. The lifting difficulty of the safety protection device of the elevator shaft is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building engineering, in particular to a safety protection device for a building construction elevator shaft. Background Art

[0002] During the construction process, it is necessary to set up a protective platform in the elevator shaft to facilitate construction workers in carrying out related construction operations such as reinforcement tying of the elevator shaft walls, installation and removal of formwork, and concrete pouring, thereby ensuring the safety of construction workers.

[0003] Chinese utility model patent CN213952921U discloses an assembled protective platform for use in a building elevator shaft, including a load-bearing platform and a supporting member, which are connected by bolts. The load-bearing platform is made of a patterned steel plate welded above a channel steel frame, and the supporting member includes two independent triangular members, which are symmetrically arranged on both sides below the load-bearing platform. Each triangular member is a stable support system assembled into a triangular shape by vertical keels, oblique keels, and reinforcing members. A horizontal cross bar is arranged at the lower part of the main keel for supporting the lower elevator shaft opening, thereby fixing the entire elevator shaft platform.

[0004] During the actual construction process, after each floor of the building is completed, the protection platform needs to be lifted up one floor by a tower crane. During the lifting process of the above-mentioned protection platform, the horizontal cross bar at the bottom of the main keel is easy to hit the upper floor slab, making it difficult to lift the protection platform. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides a safety protection device for a building construction elevator shaft to reduce the difficulty of lifting the elevator shaft safety protection device.

[0006] The utility model provides a safety protection device for a building construction elevator shaft, comprising a load-bearing platform and a supporting member, wherein the supporting member comprises a vertical keel and an oblique keel, wherein the upper ends of the vertical keel and the oblique keel are both fixed to the lower side of the load-bearing platform, and the lower end of the oblique keel is fixed to the lower part of the vertical keel, wherein the load-bearing platform, the vertical keel and the oblique keel form a triangular member, and a supporting corbel is provided at the front side of the lower part of the vertical keel;

[0007] The supporting corbel includes a supporting leg, a supporting arm and a tension spring. The rear end of the supporting leg is hinged to the vertical keel. The supporting leg is provided with an axially extending slide groove. The supporting arm is arranged on the upper side of the supporting leg. The oblique upper end of the supporting arm is hinged to the vertical keel. The oblique lower end of the supporting arm is provided with a sliding shaft adapted to the slide groove. When the sliding shaft slides to the front end of the slide groove, the supporting leg is in a horizontal state. The oblique upper end of the supporting arm is provided with an upwardly extending pull arm. The tension spring is connected between the upper end of the pull arm and the oblique keel.

[0008] Furthermore, the load-bearing platform includes a supporting steel frame and a steel mesh arranged on the supporting steel frame, and a lifting lug passing through the steel mesh is welded on the supporting steel frame, and four lifting lugs are provided and distributed at four corners of the load-bearing platform.

[0009] Furthermore, the vertical keel includes two vertical rods symmetrically arranged on the left and right, and the oblique keel includes two oblique rods oppositely arranged on the left and right. The upper end of each of the vertical rods and the oblique rods is respectively fixed on the lower side of the load-bearing platform, and the lower end of each of the oblique rods is fixed one by one to the lower part of each of the vertical rods.

[0010] Furthermore, the supporting corbels are symmetrically arranged in two groups, a lower rotating shaft and an upper rotating shaft are rotatably installed between the two vertical rods, the rear ends of the supporting legs of the two groups of supporting corbels are respectively fixed on the lower rotating shaft, and the oblique upper ends of the supporting arms of the two groups of supporting corbels are respectively fixed on the upper rotating shaft.

[0011] Furthermore, a horizontal brace is provided between the middle parts of the two vertical rods and between the middle parts of the two diagonal rods, a longitudinal brace is provided between the middle parts of the vertical rod and the diagonal rod on each side, and a diagonal brace is provided between the intersection of the diagonal rod and the longitudinal brace on each side and the upper end of the vertical rod.

[0012] Furthermore, the upper side of the load-bearing platform is provided with an oblique rod extension portion on the extension line of each oblique rod and a vertical support portion provided behind the oblique rod extension portion and connected between the load-bearing platform and the oblique rod extension portion, and the side surface of the rear side of the vertical support portion is flush with the rear edge of the load-bearing platform.

[0013] Furthermore, a rubber pad is provided on the rear side of the vertical support portion.

[0014] Furthermore, the support leg is a channel steel with an opening facing upward, and the sliding grooves are symmetrically arranged on the groove walls on both sides of the channel steel. The oblique lower end of the support arm is arranged in the channel steel, and both ends of the sliding shaft of the oblique lower end of the support arm are respectively adapted to the sliding grooves of the corresponding side groove walls of the channel steel.

[0015] The beneficial effects of the utility model are embodied in:

[0016] The safety protection device provided in the present application is arranged in the elevator shaft, and the load-bearing platform is flush with the floor of the working layer. At the same time, the rear side of the load-bearing platform is supported on the shaft wall at the rear side of the elevator shaft. The supporting structure is located below the working layer, and the legs at the lower part of the supporting structure are unfolded to a horizontal position and supported on the floor of the lower layer, so that the safety protection device is stably supported in the elevator shaft.

[0017] When the construction of the working layer is completed, the safety protection device is lifted upward along the elevator shaft by the tower crane. When the bracket assembly hits the upper floor, the sliding shaft on the support arm slides backward along the slide groove, and the support leg and the support arm are rotated downward and retracted at the same time. This can prevent the bracket assembly and the floor from colliding and being damaged during the lifting of the safety protection device, thereby reducing the difficulty of lifting the elevator shaft safety protection device. After the bracket assembly passes over the floor, the support arm rotates forward under the action of the tension spring, and the sliding shaft on the support arm slides forward to the front end of the slide groove, and drives the support leg to rotate upward and return to a horizontal position, so that the support leg can automatically return to its original position and be supported on the upper floor after lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the installation of an embodiment of the utility model.

[0021] In the attached drawings, 100-load-bearing platform; 110-supporting steel frame; 120-steel mesh; 130-lifting ear; 140-diagonal rod extension; 150-vertical support; 151-rubber pad; 200-supporting member; 210-vertical keel; 211-vertical rod; 220-diagonal keel; 221-diagonal rod; 230-supporting corbel; 231-support leg; 2311-slide; 232-support arm; 2321-slide shaft; 2322-pull arm; 233-tension spring; 240-lower rotating shaft; 250-upper rotating shaft; 260-horizontal brace; 270-longitudinal brace; 280-diagonal brace; 300-floor slab; 400-elevator shaft. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0023] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0024] like Figure 1 and Figure 2As shown, an embodiment of the utility model provides a safety protection device for a building construction elevator shaft, including a load-bearing platform 100 and a supporting member 200 .

[0025] The load-bearing platform 100 includes a supporting steel frame 110 and a steel mesh 120 arranged on the supporting steel frame 110. A lifting lug 130 passing through the steel mesh 120 is welded on the supporting steel frame 110. There are four lifting lugs 130 distributed at the four corners of the load-bearing platform 100. In this way, the safety protection device can be hoisted through the four lifting lugs 130 on the load-bearing platform 100 to ensure the stability of the hoisting.

[0026] The supporting structure 200 includes a vertical keel 210 and an oblique keel 220. The upper ends of the vertical keel 210 and the oblique keel 220 are fixed to the lower side of the load-bearing platform 100, and the lower end of the oblique keel 220 is fixed to the lower part of the vertical keel 210. The load-bearing platform 100, the vertical keel 210 and the oblique keel 220 constitute a triangular structure. A supporting corbel 230 is provided on the front side of the lower part of the vertical keel 210.

[0027] The vertical keel 210 includes two vertical rods 211 symmetrically arranged on the left and right, and the oblique keel 220 includes two oblique rods 221 oppositely arranged on the left and right. The upper ends of each vertical rod 211 and the oblique rod 221 are respectively fixed on the lower side of the load-bearing platform 100, and the lower ends of each oblique rod 221 are fixed one by one to the lower part of each vertical rod 211.

[0028] Preferably, in order to further improve the strength of the supporting structure 200, a horizontal brace 260 is provided between the middle parts of the two vertical rods 211 and between the middle parts of the two diagonal rods 221, a longitudinal brace 270 is provided between the middle parts of the vertical rod 211 and the diagonal rod 221 on each side, and a diagonal brace 280 is provided between the intersection of the diagonal rod 221 on each side and the longitudinal brace 270 and the upper end of the vertical rod 211.

[0029] The supporting corbel 230 includes a supporting leg 231, a supporting arm 232 and a tension spring 233. The rear end of the supporting leg 231 is hinged to the vertical keel 210. The supporting leg 231 is provided with an axially extending slide groove 2311. The supporting arm 232 is arranged on the upper side of the supporting leg 231. The oblique upper end of the supporting arm 232 is hinged to the vertical keel 210. The oblique lower end of the supporting arm 232 is provided with a sliding shaft 2321 adapted to the slide groove 2311. When the sliding shaft 2321 slides to the front end of the slide groove 2311, the supporting leg 231 is in a horizontal state. The oblique upper end of the supporting arm 232 is provided with an upwardly extending pulling arm 2322. The tension spring 233 is connected between the upper end of the pulling arm 2322 and the oblique keel 220.

[0030] Specifically, the support leg 231 is a channel steel with an opening facing upward, and the grooves 2311 are symmetrically arranged on the groove walls on both sides of the channel steel. The oblique lower end of the support arm 232 is arranged in the channel steel, and the two ends of the sliding shaft 2321 at the oblique lower end of the support arm 232 are respectively adapted to the grooves 2311 of the corresponding side groove walls of the channel steel.

[0031] Preferably, two groups of supporting corbels 230 are symmetrically arranged on the left and right, and a lower rotating shaft 240 and an upper rotating shaft 250 are rotatably installed between the two vertical rods 211. The rear ends of the supporting legs 231 of the two groups of supporting corbels 230 are respectively fixed on the lower rotating shaft 240, and the oblique upper ends of the supporting arms 232 of the two groups of supporting corbels 230 are respectively fixed on the upper rotating shaft 250, so that the two groups of supporting corbels 230 can be synchronously unfolded and folded.

[0032] like Figure 2 As shown, the safety protection device provided in the present application is arranged in the elevator shaft 400, the load-bearing platform 100 is flush with the floor 300 of the working layer, and the rear side of the load-bearing platform 100 is supported on the shaft wall on the rear side of the elevator shaft 400, the supporting structure 200 is located below the working layer, and the support legs 231 at the lower part of the supporting structure 200 are unfolded to a horizontal position and supported on the floor 300 of the lower layer, so that the safety protection device is stably supported in the elevator shaft 400.

[0033] When the construction of the working layer is completed, the safety protection device is lifted upward along the elevator shaft 400 by the tower crane. When the bracket assembly 230 hits the upper floor slab 300, the sliding shaft 2321 on the support arm 232 slides backward along the slide groove 2311, and the support leg 231 and the support arm 232 are rotated downward and retracted at the same time. This can prevent the bracket assembly 230 and the floor slab 300 from colliding and being damaged during the lifting process of the safety protection device, thereby reducing the difficulty of lifting the safety protection device of the elevator shaft 400. After the bracket assembly 230 passes over the floor slab 300, the support arm 232 rotates forward under the action of the tension spring 233, and the sliding shaft 2321 on the support arm 232 slides forward to the front end of the slide groove 2311, and drives the support leg 231 to rotate upward and return to a horizontal position, so that the support leg 231 can automatically return to its original position and be supported on the upper floor slab 300 after lifting.

[0034] The upper side of the load-bearing platform 100 is provided with an extension portion 140 of the diagonal rod 221 on the extension line of each diagonal rod 221, and a vertical support portion 150 is provided behind the extension portion 140 of the diagonal rod 221 and connected between the load-bearing platform 100 and the extension portion 140 of the diagonal rod 221. The side surface of the rear side of the vertical support portion 150 is flush with the rear edge of the load-bearing platform 100. During installation, the load-bearing platform 100 is supported on the shaft wall on the rear side of the elevator shaft 400 by the vertical support portion 150, so that the overall force is better and the support is more stable.

[0035] Preferably, a rubber pad 151 is provided on the rear side of the vertical support part 150. When the vertical support part 150 is supported on the wall of the elevator shaft 400, it is difficult to ensure that it fits with the wall. By providing the rubber pad 151, the rubber pad 151 can produce extrusion deformation, which can ensure that the vertical support part 150 fits with the wall of the elevator shaft 400, thereby further improving the stability of the support.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A safety protection device for a building construction elevator shaft, comprising a load-bearing platform and a supporting member, wherein the supporting member comprises a vertical keel and an oblique keel, wherein the upper ends of the vertical keel and the oblique keel are both fixed to the lower side of the load-bearing platform, and the lower end of the oblique keel is fixed to the lower part of the vertical keel, wherein the load-bearing platform, the vertical keel and the oblique keel constitute a triangular member, and a supporting corbel is provided on the front side of the lower part of the vertical keel, wherein: The supporting corbel includes a supporting leg, a supporting arm and a tension spring. The rear end of the supporting leg is hinged to the vertical keel. The supporting leg is provided with an axially extending slide groove. The supporting arm is arranged on the upper side of the supporting leg. The oblique upper end of the supporting arm is hinged to the vertical keel. The oblique lower end of the supporting arm is provided with a sliding shaft adapted to the slide groove. When the sliding shaft slides to the front end of the slide groove, the supporting leg is in a horizontal state. The oblique upper end of the supporting arm is provided with an upwardly extending pull arm. The tension spring is connected between the upper end of the pull arm and the oblique keel.

2. The construction elevator shaft safety protection device according to claim 1 is characterized in that: The load-bearing platform includes a supporting steel frame and a steel mesh arranged on the supporting steel frame. The supporting steel frame is welded with lifting ears passing through the steel mesh. Four lifting ears are arranged and distributed at four corners of the load-bearing platform.

3. The construction elevator shaft safety protection device according to claim 1 is characterized in that: The vertical keel includes two vertical rods symmetrically arranged on the left and right, and the oblique keel includes two oblique rods oppositely arranged on the left and right. The upper ends of the vertical rods and the oblique rods are respectively fixed on the lower side of the load-bearing platform, and the lower ends of the oblique rods are fixed one by one on the lower part of the vertical rods.

4. The construction elevator shaft safety protection device according to claim 3 is characterized in that: The supporting corbels are symmetrically arranged in two groups, a lower rotating shaft and an upper rotating shaft are rotatably installed between the two vertical rods, the rear ends of the legs of the two groups of supporting corbels are respectively fixed on the lower rotating shaft, and the oblique upper ends of the supporting arms of the two groups of supporting corbels are respectively fixed on the upper rotating shaft.

5. The construction elevator shaft safety protection device according to claim 3 is characterized in that: A horizontal brace is provided between the middle parts of the two vertical rods and between the middle parts of the two diagonal rods, a longitudinal brace is provided between the middle parts of the vertical rod and the diagonal rod on each side, and a diagonal brace is provided between the intersection of the diagonal rod and the longitudinal brace on each side and the upper end of the vertical rod.

6. The construction elevator shaft safety protection device according to claim 3 is characterized in that: The upper side of the load-bearing platform is provided with an inclined rod extension portion on the extension line of each inclined rod and a vertical support portion arranged behind the inclined rod extension portion and connected between the load-bearing platform and the inclined rod extension portion, and the side surface of the rear side of the vertical support portion is flush with the rear edge of the load-bearing platform.

7. The construction elevator shaft safety protection device according to claim 6 is characterized in that: A rubber pad is provided on the rear side of the vertical support portion.

8. The construction elevator shaft safety protection device according to claim 1 is characterized in that: The support leg is a channel steel with an opening facing upward, and the sliding grooves are symmetrically arranged on the groove walls on both sides of the channel steel. The oblique lower end of the support arm is arranged in the channel steel, and the two ends of the sliding shaft at the oblique lower end of the support arm are respectively adapted to the sliding grooves of the corresponding side groove walls of the channel steel.

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