A lifting device in a foundation pit

Abstract

The utility model discloses a lifting device in a foundation pit, which is located in the supporting piles of a vertical foundation pit, and the bottom of the foundation pit is connected to an underground passage; the device includes a reinforced concrete foundation located at the bottom of the foundation pit, a hydraulically driven lifting platform is provided on the foundation, and a plurality of columns are fixed on the foundation and around the lifting platform, each column is rigidly connected to its adjacent supporting piles, and adjacent columns are reinforced and connected by a crossbeam. The utility model mainly solves the problem of vertical transportation during the construction of underground structures of engineering projects in limited space, and at the same time avoids the main construction area to the greatest extent, reduces the scope of influence on the construction of underground structures, and the device dismantling process takes a short time and consumes little resources. At the same time, the lifting device can be repeatedly used, which greatly saves project costs and construction period.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundation pit construction, and in particular relates to a lifting device in a foundation pit. Background Art

[0002] Due to the limited construction site, the foundation pit support usually adopts a deep foundation pit in the form of pile rows. During the excavation construction process, a horseway must be reserved to meet the vertical transportation needs of the construction site transportation vehicles. However, due to factors such as the building layout, the depth of the foundation pit, and the surrounding environment, it is sometimes impossible to reserve the horseway according to the specified slope, or the reserved horseway will occupy the main construction area of ​​the project, affecting the overall progress of the project. In the later stage, it is necessary to organize personnel and machinery to excavate the horseway for the second time, and then carry out structural construction in the area occupied by the horseway, which will cause the construction progress to lag and increase the project cost. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the prior art, the purpose of the utility model is to provide a lifting device in a foundation pit.

[0004] The utility model is implemented as follows: a lifting device in a foundation pit, the lifting device is located in the supporting piles of a vertical foundation pit, and the bottom of the foundation pit is connected to an underground passage; the device includes a reinforced concrete foundation located at the bottom of the foundation pit, a hydraulically driven lifting platform is provided on the foundation, a plurality of columns are fixed on the foundation and around the lifting platform, each column is rigidly connected to its adjacent supporting piles, and adjacent columns are reinforced and connected by cross beams.

[0005] Preferably, a metal protective net is installed between two adjacent columns, and the metal protective net is set to be open at the junction with the entrance of the underground passage.

[0006] Preferably, the device also includes a lifting barrier net, which is installed on the track of the column and is fixed to one end of a pulling rope, the middle part of the pulling rope is arranged on a pulley at the top of the column, and the other end of the pulling rope is fixed to a lifting platform; wherein, when the lifting platform is lowered below the base elevation of the underground passage, the lifting barrier net rises and connects the underground passage with the foundation pit.

[0007] Preferably, when the lifting platform rises to above the elevation of the upper opening of the foundation pit, the lifting barrier net descends and closes the entrance of the underground passage and the foundation pit.

[0008] Preferably, the column is formed by standard section components being spliced ​​up and down, anchor bolts are embedded in the foundation, and the bottom standard section component is fixed on the anchor bolts.

[0009] Compared with the shortcomings and deficiencies of the prior art, the utility model has the following beneficial effects: the utility model mainly solves the problem of vertical transportation during the construction of underground structures in engineering projects within a limited space (the support structure is a foundation pit with rows of piles), while avoiding the main construction area to the greatest extent, reducing the impact on the construction of the underground structure, and the device dismantling process takes a short time and consumes little resources. At the same time, the lifting device can be recycled and reused, which greatly saves project costs and construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a front view of the device of the utility model;

[0011] Figure 2 It is a top view of the lifting screen in the device of the utility model;

[0012] Figure 3 It is a side view of the device of the utility model. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0014] like Figures 1 to 3 As shown, Figure 1 It is a front view of the device of the utility model; Figure 2 It is a top view of the lifting screen in the device of the utility model; Figure 3 It is a side view of the device of the utility model.

[0015] The utility model discloses a lifting device in a foundation pit, which is located in a supporting pile 1 of a vertical foundation pit, and the bottom of the foundation pit is connected to an underground passage; the device comprises a reinforced concrete foundation 2 located at the bottom of the foundation pit, a lifting platform 3 driven by hydraulic pressure is arranged on the foundation 2, a plurality of columns 4 are fixed on the foundation 2 and around the lifting platform 3, each column 4 is rigidly connected 5 to its adjacent supporting pile 1, and adjacent columns 4 are reinforced and connected by cross beams 6.

[0016] In the embodiment of the utility model, the foundation pit is generally in the shape of a rectangular column, including a front side and a rear side connected to the underground passage, and a left side and a right side adjacent to the front side and the rear side. It is easy to understand that the front side and the rear side of the bottom of the foundation pit are provided with an entrance connected to the underground passage. In actual application, the lifting platform 3 is lowered to the same level as the elevation of the base of the foundation pit, and the height of the entrance is not lower than the height of the vehicle. The vehicle 12 enters the foundation pit in the underground passage and stops on the lifting platform 3, and the lifting platform 3 is driven by hydraulic or electric motor to rise in the foundation pit. After the lifting platform 3 rises to the same level as the elevation of the upper opening of the foundation pit, the vehicle drives out of the foundation pit from the lifting platform 3.

[0017] In the embodiment of the utility model, for the convenience of disassembly and assembly, the column 4 can be formed by splicing standard section components up and down, and anchor bolts are embedded in the foundation 2, and the bottom standard section component is fixed on the anchor bolts.

[0018] In the further implementation process, in order to ensure higher safety of the device, a metal protective net 7 is installed between two adjacent columns 4, and the metal protective net 7 is set as an opening at the junction with the entrance of the underground passage. In the embodiment of the utility model, the foundation pit is usually a rectangular column, including a front side and a rear side connected to the underground passage, and a left side and a right side adjacent to the front and rear sides. It is easy to understand that the front side and the rear side of the bottom of the foundation pit are both set as entrances connected to the underground passage, so the metal protective net 7 is set as an opening at the junction of the entrance; in addition, the metal protective net 7 is at least 1.2m higher than the elevation of the upper mouth of the foundation pit.

[0019] In the further implementation process, in order to ensure higher safety of the device, the device also includes a lifting barrier net 8, which is installed on the track 9 of the column 4, and the lifting barrier net 8 is fixed to one end of the pulling rope 10, the middle part of the pulling rope is arranged on the pulley 11 at the top of the column 4, and the other end of the pulling rope is fixed on the lifting platform 3; wherein, when the lifting platform 3 is lowered to below the base elevation of the underground passage, the lifting barrier net 8 rises and connects the underground passage with the foundation pit. Furthermore, when the lifting platform 3 rises to above the elevation of the upper opening of the foundation pit, the lifting barrier net 8 descends and closes the entrance of the underground passage and the foundation pit. In the embodiment of the utility model, in order to keep the pulling rope in a taut state at all times, a counterweight block can also be fixed on the lifting barrier net 8.

[0020] The utility model mainly solves the problem of vertical transportation during the construction of underground structures of engineering projects in limited space (the support structure is a foundation pit with pile rows), while avoiding the main construction area to the greatest extent, reducing the impact on the underground structure construction. The device dismantling process takes a short time and consumes little resources. At the same time, the lifting device can be recycled and reused, which greatly saves project costs and construction period.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device in a foundation pit, the lifting device is located in the supporting piles of a vertical foundation pit, and the bottom of the foundation pit is connected to an underground passage; characterized in that: The device includes a reinforced concrete foundation located at the bottom of the foundation pit, on which is a hydraulically driven lifting platform. A number of columns are fixed on the foundation and around the lifting platform. Each column is rigidly connected to its adjacent supporting piles, and adjacent columns are reinforced and connected by crossbeams.

2. The device according to claim 1, characterized in that A metal protective net is installed between two adjacent columns, and the metal protective net is set to have an opening at the joint with the entrance of the underground passage.

3. The device according to claim 1, characterized in that The device also includes a lifting barrier net, which is installed on the track of the column and is fixed to one end of a pulling rope. The middle part of the pulling rope is arranged on a pulley at the top of the column, and the other end of the pulling rope is fixed to the lifting platform; wherein, when the lifting platform is lowered to below the base elevation of the underground passage, the lifting barrier net rises and connects the underground passage with the foundation pit.

4. The device according to claim 3, characterized in that When the lifting platform rises to a level above the upper opening of the foundation pit, the lifting barrier net descends and closes the entrance of the underground passage and the foundation pit.

5. The device according to claim 1, characterized in that The column is formed by splicing standard section components up and down, and anchor bolts are embedded in the foundation, and the standard section component at the bottom is fixed on the anchor bolts.

Images