Construction platform for expanding excavation of vertical shaft

Abstract

The utility model relates to the technical field of shaft construction platforms, in particular to a shaft expanding excavation construction platform which comprises a bottom plate, grooves are formed in the left end and the right end of the bottom plate, extension plates are arranged in the grooves, one end of each extension plate extends out of the bottom plate and is fixedly connected with a side guardrail, and the upper end of the bottom plate is fixedly connected with a stand column. Telescopic rods are connected between the stand columns and the side guardrails, electric push rods are installed on the side faces of the bottom plate, movable rods of the electric push rods are connected with the side guardrails, and buffer assemblies are installed on the outer vertical faces of the side guardrails. The lifting cage solves the problem that an existing lifting cage is prone to shaking in the construction process, and meanwhile solves the problems that in the construction process, constructors are far away from the inner wall of a vertical shaft, deviation is prone to occurring in the drilling process, and the construction effect is affected.

Description

Technical Field

[0001] This utility model relates to the technical field of shaft construction platforms, specifically a platform for shaft expansion construction. Background Technology

[0002] The common construction method for vertical shaft construction is to drill a pilot shaft through a reverse shaft, followed by enlargement excavation, and then use the pilot shaft for muck removal. During the enlargement process, welded ribbed steel mesh or steel plates are currently used as construction platforms on site, and the pilot shaft opening is covered to allow personnel and equipment to enter the shaft for operations, preventing injuries or fatalities from falls into the pilot shaft.

[0003] The existing hoisting cage is used as a construction platform. The edge of the hoisting cage needs to be a certain distance from the inner wall of the shaft to facilitate the hoisting cage to move up and down. This will make the construction personnel far away from the inner wall of the shaft during construction, which will easily cause deviations when drilling, affecting the construction effect. In addition, the hoisting cage is prone to swaying during construction, which will affect the balance of the construction personnel's force. Utility Model Content

[0004] The purpose of this utility model is to provide a platform for shaft expansion construction, which solves the problem of existing cages swaying during construction, and also solves the problem that construction personnel are far from the inner wall of the shaft, which can easily cause deviations during drilling and affect the construction effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a platform for shaft enlargement construction, comprising a base plate, grooves at both ends of the base plate, an extension plate disposed within the grooves, one end of the extension plate extending out of the base plate and fixedly connected to a side guardrail, a column fixedly connected to the upper end of the base plate, a telescopic rod connected between the column and the side guardrail, an electric actuator installed on the side of the base plate, the movable rod of the electric actuator connected to the side guardrail, and a buffer assembly installed on the outer surface of the side guardrail.

[0006] By adopting the above structural design, the two side guardrails are moved away from each other by activating the electric actuator, and then the extension plate is pulled out from the bottom plate. The length of the cage is adjusted according to the width of the shaft, which greatly improves the applicability of the cage. At the same time, the edge of the cage gradually gets closer to the inner wall of the shaft, eliminating the gap between the edge of the cage and the inner wall of the shaft, and solving the problem of the cage swaying when the construction workers are working.

[0007] Preferably, the buffer assembly includes a groove formed on the side guardrail, a support rod placed in the groove, one end of the support rod extending out of the groove and fixedly connected to a bracket, and a rubber wheel mounted on the bracket.

[0008] With the above design, the rubber wheels prevent the side guardrail from directly contacting the inner wall of the shaft as it approaches the shaft, thus providing a certain degree of protection.

[0009] Preferably, a limiting plate is fixedly sleeved on the support rod, and a buffer spring is provided in the slide groove, with both ends of the buffer spring abutting against the inner sidewall of the slide groove and the limiting plate, respectively.

[0010] With the above design, as the edge of the cage gradually approaches the inner wall of the shaft, the rubber wheel first contacts the inner wall of the shaft and the buffer spring provides cushioning for the cage.

[0011] Preferably, lifting rings are installed at the four corners of the base plate.

[0012] The above structural design, with four lifting rings, makes the cage more stable during hoisting.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By activating the electric actuator, the two side railings are moved away from each other, thereby pulling the extension plate out from the base plate. The length of the hoisting cage is adjusted according to the width of the shaft, greatly improving its versatility. Simultaneously, the edge of the cage gradually approaches the inner wall of the shaft, eliminating the gap between the cage edge and the inner wall, thus resolving the problem of cage swaying during worker operations. As the side railings approach the inner wall, the rubber wheels first contact the wall, and the buffer springs cushion the impact on the cage. The rubber wheels prevent direct contact between the side railings and the inner wall, providing a degree of protection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the buffer component of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1 to 2This utility model provides a technical solution: a platform for shaft enlargement construction, including a base plate 1, grooves at both ends of the base plate 1, an extension plate 2 in the grooves, one end of the extension plate 2 extending out of the base plate 2 and fixedly connected to a side guardrail 5, a column 3 fixedly connected to the upper end of the base plate 1, a telescopic rod 4 connecting the column 3 and the side guardrail 5, an electric actuator 7 installed on the side of the base plate 1, the movable rod of the electric actuator 7 connected to the side guardrail 5, and a buffer assembly 6 installed on the outer surface of the side guardrail 5.

[0019] The buffer assembly 6 includes a groove 605 formed on the side guardrail 5 and a support rod 603 placed in the groove 605. One end of the support rod 603 extends out of the groove 605 and is fixedly connected to a bracket 601. A rubber wheel 602 is installed on the bracket 601.

[0020] A limiting plate 601 is fixedly sleeved on the support rod 603, and a buffer spring 604 is provided in the slide groove 605. The two ends of the buffer spring 604 abut against the inner side wall of the slide groove 605 and the limiting plate 601, respectively.

[0021] Lifting rings 8 are installed at the four corners of the base plate 1.

[0022] Working Principle: During operation, the wire rope is fixed to the lifting ring 8 and simultaneously to an external winch. The cage is then raised and lowered within the shaft using the combined action of the external winch and the wire rope. Once the cage reaches a certain height, the operator activates the electric actuator 7, causing the two side guardrails 5 to move away from each other. This pulls the extension plate 2 out from the base plate 1, adjusting the cage length according to the shaft width. Simultaneously, the cage's edge gradually approaches the inner wall of the shaft, eliminating the gap between the cage edge and the inner wall, thus resolving the issue of cage swaying during operation. As the side guardrails 5 approach the inner wall, the rubber wheels 602 first contact the inner wall, and the buffer springs 604 cushion the cage. The rubber wheels 602 prevent direct contact between the side guardrails 5 and the inner wall, providing some protection.

[0023] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A platform for shaft enlargement construction, comprising a base plate (1), characterized in that: The base plate (1) has grooves at both ends, and an extension plate (2) is provided in the groove. One end of the extension plate (2) extends out of the base plate (2) and is fixedly connected to a side railing (5). A column (3) is fixedly connected to the upper end of the base plate (1). A telescopic rod (4) is connected between the column (3) and the side railing (5). An electric push rod (7) is installed on the side of the base plate (1). The movable rod of the electric push rod (7) is connected to the side railing (5). A buffer assembly (6) is installed on the outer surface of the side railing (5).

2. The platform for shaft enlargement construction according to claim 1, characterized in that: The buffer assembly (6) includes a groove (605) opened on the side guardrail (5) and a support rod (603) placed in the groove (605). One end of the support rod (603) extends out of the groove (605) and is fixedly connected to a bracket (601). A rubber wheel (602) is installed on the bracket (601).

3. The platform for shaft enlargement construction according to claim 2, characterized in that: A limiting plate (601) is fixedly sleeved on the support rod (603), and a buffer spring (604) is provided in the slide groove (605). The two ends of the buffer spring (604) abut against the inner side wall of the slide groove (605) and the limiting plate (601), respectively.

4. The platform for shaft enlargement construction according to claim 1, characterized in that: Lifting rings (8) are installed at the four corners of the base plate (1).

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