Automatic lifting construction platform in caisson

Abstract

The application discloses a kind of automatic lifting construction platforms in caisson well, belong to shaft drilling technical field.The platform includes shaft wall, platform big unit and oil cylinder system;Shaft wall provides installation base for the fixation and lifting of platform big unit;The number of platform big unit is greater than three, and platform big unit is distributed at the inner surface of shaft wall with equal intervals, and the interval between platform big units is used to let go of the boom to be lifted to the wellhead when shaft boring machine is overhauled;Oil cylinder system provides lifting power for each platform big unit, and platform big unit is lifted respectively after sinking well, and the lifting of all platform big units is completed after being in place.The construction platform of the application can realize automatic lifting along with the sinking process, and can guarantee the personal safety of construction personnel during lifting.

Description

Technical Field

[0001] The invention relates to a construction platform, in particular to an automatic lifting construction platform, and belongs to the technical field of vertical shaft drilling. Background Art

[0002] In recent years, cities have developed rapidly, underground space business has continued to develop, vertical shaft engineering projects have gradually increased, and vertical shaft mechanical drilling technology has developed rapidly, which has led to higher requirements for the construction platform for making well walls in the well.

[0003] In the early days, the internal processes of shaft wall production were all completed on a full-frame platform set up inside. After the development of mechanical drilling technology, the excavation of shafts in the well was fully mechanized, and combined with the caisson construction process, there was no condition to set up a full-frame platform inside the well. The well wall uses prefabricated pipe segments, and no construction platform is required inside the well, but the prefabrication cost is extremely high, especially in some small and medium-sized cities where there are no prefabrication plants at all, and it cannot be fully promoted. Cast-in-place well walls are still the most economical and comprehensive choice at present. However, shaft drilling technology has only developed in the past two years, and there is no mature technology for the supporting cast-in-place caisson well wall construction platform inside the well. Generally, a simple internally mounted platform is used, and after the well is sunk, it is lifted up by a crane. The long-term use of cranes is not only costly, but the lifting process requires personnel to stand on the platform to cooperate, which poses a high safety risk. Summary of the Invention

[0004] In view of this, the present invention provides an automatic lifting construction platform in a caisson, which can be automatically lifted as the caisson progresses and can ensure the personal safety of construction workers during the lifting process.

[0005] An automatic lifting construction platform in a caisson, comprising a well wall, a platform unit and an oil cylinder system;

[0006] The shaft wall provides an installation foundation for fixing and lifting the large platform units;

[0007] The number of the platform large units is greater than three, and the platform large units are evenly spaced on the inner surface of the shaft wall. The spacing between the platform large units is used to allow the boom of the shaft boring machine to be lifted to the shaft opening during maintenance.

[0008] The oil cylinder system provides lifting power for each large platform unit separately. After the large platform units are sunk, they are lifted separately. After all the large platform units are lifted into place, the lifting of the entire construction platform is completed.

[0009] Furthermore, the platform large unit is composed of multiple groups of standard small units and a corresponding number of well wall hangers. The number of standard small units is determined according to the arc length of the circular well or the side length of the square well. The standard small units are detachably connected. Under the drive of the cylinder system, the standard small units realize their own up and down movement on the well wall through the telescopic movement of the cylinder and the well wall hangers fixed on the well wall.

[0010] Furthermore, the standard small unit includes a structural frame, a platform support, guide rollers, an upper pedal, a lower pedal, a connecting pedal and a protective plate;

[0011] The structural frame is provided with three vertical rectangular tubes on the side close to the well wall, and a platform support is provided on the upper side of the middle rectangular tube. A mounting hole for hinged connection is left on the platform support. The two rectangular tubes on both sides are provided with guide rollers on the upper and lower sides, and a protective plate is provided on the side close to the center of the well; both sides of the upper pedal and the lower pedal are connected to the connecting pedal, and the standard small units are connected into one through the connecting pedal to form a complete upper and lower platform working surface. The upper layer is used for construction operations, and the lower layer is used for disassembly of the brackets and pins.

[0012] Furthermore, the upper pedal and the lower pedal are rectangular in shape, the connecting pedal is a right-angled trapezoid in shape, the right-angled sides of the connecting pedal are connected to the left and right sides of the upper pedal and the lower pedal, and the overall shape after connection is trapezoidal, with the top edge of the trapezoid close to one side of the well wall.

[0013] Furthermore, the well wall hanging parts include embedded parts, hanging seats, fastening bolts and pins;

[0014] The embedded part is embedded in the concrete at the designed position when pouring the next mold well wall, and the embedded part has an internal thread on the inner surface of the well wall;

[0015] The mount is a solid custom iron block with a bolt hole in the middle of the front and two pin holes on the side of the mount. The upper pin hole is used to connect to the platform support, and the pin hole on the platform support is aligned with it and then fixed with a pin; the lower pin hole is used to connect to the cylinder support on the long-stroke cylinder, and the pin hole on the cylinder support is aligned with it and then fixed with a pin;

[0016] The hanging seat is screwed together with the embedded part and then fixed on the well wall by fastening bolts.

[0017] Furthermore, the oil cylinder system includes a long-stroke oil cylinder, a control pump station and connecting oil pipes;

[0018] The long-stroke oil cylinder is divided into a rod chamber and a rodless chamber. The rod chamber and the platform support of the standard small unit are hinged to each other. The rodless chamber is provided with an oil cylinder support. Two guide rollers are provided at the tail of the rodless chamber. The two guide rollers are respectively provided on both sides of the oil cylinder.

[0019] The control pump station adopts a mobile pump station, and the connecting oil pipe between the control pump station and the long-stroke oil cylinder adopts an oil pipe quick-plug connection. One control pump station can control the synchronous lifting, synchronous lowering and single oil rod extension of the oil cylinder system of a platform large unit; three platform large units share one pump station. After the lifting of one platform large unit is completed, the oil pipe quick plug is pulled out and it is moved to the next platform large unit to connect the connecting oil pipe for operation.

[0020] Beneficial effects:

[0021] 1. This invention utilizes standard small units spliced ​​together to form a platform-based unit, resulting in a simple structure and flexible configuration, adapting to circular, square, and other shaft shapes. The platform-based unit layout perfectly coordinates with the shaft boring machine, ensuring no interference with the machine's lifting points and facilitating maintenance.

[0022] 2. The present invention does not require the cooperation of a crane during the entire lifting process of the construction platform. During the lifting process, there must be a pin connected to the hanging bracket, and the entire platform has no risk of being suspended in the air, which saves costs while ensuring the safety of personnel.

[0023] 3. The automatic lifting construction platform in the caisson of the present invention adopts an external mobile control pump station to reduce the weight of the platform structure. It is quickly connected through quick plugs, has high operating efficiency, and multiple units share one pump station, which greatly reduces the cost of the entire platform.

[0024] 4. The upper and lower pedals in the standard small unit of the present invention are rectangular in shape, and the connecting pedal is designed to be a right-angled trapezoid. The right-angled sides of the connecting pedal are connected to the left and right sides of the upper and lower pedals. The overall shape after connection is trapezoidal, and the top edge of the trapezoid is close to one side of the well wall. By utilizing the angle of the hypotenuse of the right-angled trapezoid, it adapts to the curved surface of the well wall after splicing. If the hypotenuse is 90°, the platform is a straight edge. Therefore, this solution is also suitable for use in rectangular vertical shafts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of the overall structure of the automatic lifting construction platform in the caisson of the present invention;

[0026] Figure 2 for Figure 1 A top view of

[0027] Figure 3 Schematic diagram of the composition structure of a standard small unit;

[0028] Figure 4 This is a schematic diagram of the installation relationship of the well wall hanger on the well wall;

[0029] Figure 5 Schematic diagram of the coordination relationship between the standard small unit and the well wall;

[0030] Figure 6 Flowchart for implementing automatic promotion for the platform.

[0031] Wherein, 1-well wall, 1-1-well wall one mold, 1-2-well wall two mold, 1-3-well wall three mold, 2-platform large unit, 2-1-standard small unit, 2-1-1-structure frame, 2-1-2-upper pedal, 2-1-3-connection pedal, 2-1-4-protection plate, 2-1-5-platform support, 2-1-6-guiding roller, 2-1-7-lower pedal, 2-2-well wall hanging piece, 2-2-1-embedded part, 2-2-2-hanging seat, 2-2-3-fastening bolt, 2-2-4-pin, 3-oil cylinder system, 3-1-control pump station, 3-2-connection oil pipe, 3-3-oil pipe quick plug, 3-4-long stroke oil cylinder, 3-4-1-oil cylinder support. DETAILED DESCRIPTION

[0032] The present application provides a sinking well automatic lifting construction platform, as shown in the accompanying drawings Figure 1 As shown in the accompanying drawings, the automatic lifting construction platform is divided into three platform large units 2 with the same structure according to the number of lifting points of the shaft sinking machine, and the spacing between the platform large units 2 is used to move the large arm to the well mouth for maintenance of the shaft sinking machine, and the platform large units 2 are fixed by using simple pedal lapping at ordinary times, and are removed during maintenance. Each platform large unit 2 has a separate lifting drive oil cylinder, and the platform large units 2 are respectively lifted by the oil cylinder system 3 after the sinking well, so as to complete the lifting of the whole platform.

[0033] As shown in the accompanying drawings Figure 2 The platform large unit is composed of a plurality of standard small units 2-1 and a corresponding number of well wall hanging pieces 2-2, the number of the standard small units 2-1 is determined according to the arc length of the circular well or the side length of the square well, and here the circular well is taken as an example with six standard small units.

[0034] As shown in the accompanying drawings Figure 4 The well wall hanging piece 2-2 is composed of an embedded part 2-2-1, a hanging seat 2-2-2, a fastening bolt 2-2-3 and a pin 2-2-4, the embedded part 2-2-1 is embedded at the designed position of the concrete during pouring of the next mold well wall, and the embedded part 2-2-1 has an internal thread on the inner surface side of the well wall; the hanging seat 2-2-2 is a solid customized iron block, which is fixed on the well wall 1 by the fastening bolt 2-2-3 through the installation bolt hole left in the middle of the front face, the side face of the hanging seat 2-2-2 is provided with two upper and lower pin holes, the upper pin hole is used for connection with the platform support 2-1-5 on the standard small unit 2-1, and is fixed after alignment by the pin 2-2-4, so as to provide a platform fixed support reaction force and a lifting reaction force of the oil cylinder rodless cavity, and the lower pin hole is used for connection with the oil cylinder support 3-4-1, and is fixed after alignment by the pin 2-2-4, so as to provide a support reaction force during platform jacking.

[0035] As shown in the accompanying drawings Figure 2As shown, the cylinder system 3 consists of a long-stroke cylinder 3-4, connecting tubing 3-2, a tubing quick connector 3-3, and a control pump station 3-1. The long-stroke cylinder 3-4 is divided into a rod chamber and a rodless chamber. The rodless chamber is hinged to the platform support 2-1-5. The rodless chamber is equipped with a cylinder support 3-4-1, which is connected to the pin hole below the hanger 2-2-2 via a pin 2-2-4. Two guide rollers 2-1-6 are installed at the rear of the rodless chamber to reduce friction during lifting. These guide rollers 2-1-6 are located on either side of the long-stroke cylinder 3-4 to keep the rodless chamber clear of the hanger on the wellbore during lifting. Multiple sets of long-stroke cylinders 3-4 are provided (here, four sets are installed in a large platform unit), designed based on the platform's weight. Each standard small unit 2-1 has the conditions for hinged installation of the long-stroke cylinder 3-4. The control pump station 3-1 is a mobile pump station. The connecting pipe 3-2 between the control pump station 3-1 and the long-stroke cylinder 3-4 is connected by a quick-connect pipe 3-3. One control pump station 3-1 can control the synchronous lifting and lowering of the cylinder system of a platform unit, as well as the extension and retraction of a single boom. Three platform units share one control pump station 3-1. After lifting one platform unit, the quick-connect pipe 3-3 is removed and the unit is moved to the next platform unit to connect the connecting pipe 3-2.

[0036] As attached Figure 3 As shown, the standard small unit 2-1 is a standard unit, which consists of a structural frame 2-1-1, a platform support 2-1-5, a guide roller 2-1-6, an upper pedal 2-1-2, a lower pedal 2-1-7, a connecting pedal 2-1-3 and a protective plate 2-1-4.

[0037] The structural frame 2-1-1 is composed of rectangular tubes and is an integral load-bearing skeleton structure. Three vertical rectangular tubes are provided on the side of the structural frame 2-1-1 close to the well wall 1. A platform support 2-1-5 is provided on the upper side of the middle rectangular tube. The platform support 2-1-5 is provided with a hinged mounting hole with a rod cavity for the long-stroke cylinder 3-4. Guide rollers 2-1-6 are provided on the upper and lower sides of the two rectangular tubes on both sides. The upper and lower sides of the upper and lower pedals 2-1-2 and 2-1-7 are connected to the connecting pedal 2-1-3 to form a complete upper and lower two-layer platform working surface. The upper layer is used for construction operations, and the lower layer is used for disassembly of the bracket 2-2-2 and the pin 2-2-4. The upper pedal 2-1-2 and the lower pedal 2-1-7 are designed to be straight-edged, and the connecting pedal 2-1-3 is designed to be a right-angled trapezoid. The purpose is to use the angle of the right-angled trapezoid's hypotenuse to adapt to the curved surface of the shaft wall 1 after splicing. If the hypotenuse is 90°, the platform is a straight edge, so this solution is also applicable to rectangular shafts. A protective plate 2-1-4 is provided on the standard small unit near the center of the shaft to ensure the safety of personnel working on the platform.

[0038] As attached Figure 5As shown, the well wall 1 is divided into a well wall mold 1-1, a well wall mold 1-2 and a well wall mold 1-3 according to the construction sequence. Each time the next mold of the well wall is constructed, the embedded parts 2-2-1 in the well wall hanging parts 2-2 are buried. Figure 6 As shown, the process of automatically lifting the construction platform is as follows: when the well wall 1 completes the caisson and needs to proceed to the next mold construction, connect a certain platform large unit and the quick-insert oil pipe of the mobile control pump station, pull out the pin 2-2-4 connected to the platform support 2-1-5 on the hanger 2-2-2 of the well wall second mold 1-2 (step 1), control the long-stroke cylinder 3-4 to be jacked up synchronously (step 2), when the platform support 2-1-5 on the rod cavity reaches the pin hole above the hanger 2-2-2 of the well wall third mold 1-3, insert the pin 2-2-4 and simultaneously pull out the pin 2-2-4 connected to the rodless cavity cylinder support 3-4-1 on the hanger 2-2-2 of the well wall second mold 1-2 (step 3), and then reclaim the rodless cavity (step 4), when the cylinder support 3-4-1 reaches the pin hole on the hanger 2-2-2 of the well wall third mold 1-3, insert the pin 2-2-4 to fix the long-stroke cylinder 3-4 to the well wall (step 5). After completion, unplug the oil pipe quick plug 3-3 and move the oil pipe quick plug 3-3 to the next group of platform large units. Complete the lifting of all platform large units in sequence to complete the entire platform automated lifting work.

[0039] There is generally no need to automatically lower the construction platform during caisson construction. If the construction platform needs to be lowered due to special reasons, it can be completed in the reverse order of raising the platform.

[0040] The above content is a further detailed description of the present invention in conjunction with specific embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. An automatic lifting construction platform in a caisson, characterized in that: Including well wall, platform large unit and cylinder system; The shaft wall provides an installation foundation for fixing and lifting the large platform units; The number of the platform large units is greater than three, and the platform large units are evenly spaced on the inner surface of the shaft wall. The spacing between the platform large units is used to allow the boom of the shaft boring machine to be lifted to the shaft opening during maintenance. The oil cylinder system provides lifting power for each large platform unit. After the large platform units are sunk, they are lifted separately. When all the large platform units are lifted into place, the entire construction platform is lifted. The oil cylinder system includes a long-stroke oil cylinder, a control pump station and connecting oil pipes. The platform large unit is composed of multiple groups of standard small units and a corresponding number of well wall hangers. The number of standard small units is determined by the arc length of the circular well or the side length of the square well. The standard small units are detachably connected. Under the drive of the cylinder system, the standard small units move up and down on the well wall through the telescopic movement of the cylinder and the well wall hangers fixed on the well wall. The standard small unit includes a structural frame, a platform support, guide rollers, an upper pedal, a lower pedal, a connecting pedal and a protective plate; The structural frame is provided with three vertical rectangular tubes on the side close to the well wall, a platform support is provided on the upper side of the middle rectangular tube, a mounting hole for hinge is left on the platform support, and guide rollers are provided on the upper and lower sides of the two rectangular tubes on both sides. A protective plate is provided on the side close to the well center of the structural frame; both sides of the upper and lower pedals are connected to the connecting pedals, and the standard small units are connected into one by the connecting pedals to form a complete upper and lower platform working surface, the upper layer is used for construction operations, and the lower layer is used for disassembly of the hanger and pins; The well wall hanging parts include embedded parts, hanging seats, fastening bolts and pins; The embedded part is embedded in the concrete at the designed position when pouring the next mold well wall, and the embedded part has an internal thread on the inner surface of the well wall; The mount is a solid custom iron block with a bolt hole in the middle of the front and two pin holes on the side of the mount. The upper pin hole is used to connect to the platform support, and the pin hole on the platform support is aligned with it and then fixed with a pin; the lower pin hole is used to connect to the cylinder support on the long-stroke cylinder, and the pin hole on the cylinder support is aligned with it and then fixed with a pin; The hanging seat is screwed together with the embedded part and then fixed on the well wall by fastening bolts.

2. The automatic lifting construction platform in the caisson as claimed in claim 1, characterized in that: The upper pedal and the lower pedal are rectangular in shape, the connecting pedal is a right-angled trapezoid in shape, the right-angled sides of the connecting pedal are connected to the left and right sides of the upper pedal and the lower pedal, and the overall shape after connection is trapezoidal, with the top edge of the trapezoid close to one side of the well wall.

3. The automatic lifting construction platform in the caisson as claimed in claim 1 or 2, characterized in that: The long-stroke oil cylinder is divided into a rod chamber and a rodless chamber. The rod chamber and the platform support of the standard small unit are hinged to each other. The rodless chamber is provided with an oil cylinder support. Two guide rollers are provided at the tail of the rodless chamber. The two guide rollers are respectively provided on both sides of the oil cylinder. The control pump station adopts a mobile pump station, and the connecting oil pipe between the control pump station and the long-stroke oil cylinder adopts an oil pipe quick-plug connection. One control pump station can control the synchronous lifting and lowering of the oil cylinder system of a platform large unit and the extension and retraction of a single oil rod; three platform large units share one pump station. After the lifting of one platform large unit is completed, the oil pipe quick plug is pulled out and it is moved to the next platform large unit to connect the connecting oil pipe for operation.

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