A splicable rotary drilling steel casing

Abstract

The present application relates to rotary drilling pile machine construction technology field, more specifically to a kind of spliced rotary drilling steel casing, including steel casing rotary joint is connected in splicing steel casing by sliding, splicing steel casing is connected by sliding between steel casing rotary joint and bottom section steel casing;The upper end of the steel casing rotary joint is inserted into the drill pipe of rotary drilling machine;The steel casing rotary joint includes trapezoidal steel plate, circular steel plate, upper steel casing and connecting square groove, trapezoidal steel plate is fixed on circular steel plate, and circular steel plate is fixed on upper steel casing;Multiple tenons are uniformly fixed on the outer wall of upper steel casing;The beneficial effects of the present application are that tenon structure can be used to quickly assemble, transport and link steel casing, to improve construction efficiency and convenience.

Description

TECHNICAL FIELD

[0001] The present application relates to the construction technology field of rotary drilling pile machine, more particularly to a spliced rotary drilling pile machine steel casing. BACKGROUND

[0002] In the traditional rotary drilling pile machine pile construction, the splicing of the steel casing usually adopts the welding method. However, welding has some disadvantages, such as long welding time, low construction efficiency, etc. Similar to patent No. CN201010115052.5 Bridge deep water foundation steel casing construction method, it relates to the bridge deep water foundation steel casing floating and ship type floating platform positioning system + air pressure lifting method construction scheme. The invention mainly includes the following two parts: after the steel casing is floated to the pier position, the adjusted ship type floating platform positioning system is used to accurately position the steel casing; the air compressor is used to inflate the steel casing to lift the steel casing. The invention transports the formed steel casing to the position by floating transportation, uses the air pressure lifting method to sink the steel casing, uses the weight of the steel casing itself and the anchor system of the floating platform to ensure that the verticality of the steel casing and the center plane position of the steel casing and pile foundation can meet the design and construction required precision; but this method cannot quickly assemble, transport and splice the steel casing.

[0003] Therefore, the existing technical solutions have the disadvantages that the steel casing cannot be quickly assembled, transported and spliced. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the welding connection of the steel casing in the prior art, and to quickly assemble, transport and splice the steel casing by using a mortise and tenon structure, so as to improve the construction efficiency and convenience.

[0005] To this end, the technical solution adopted is that the present application is a spliced rotary drilling pile machine steel casing, which comprises a steel casing rotary joint connected to a spliced steel casing through sliding connection, and the spliced steel casing is connected between the steel casing rotary joint and the bottom section steel casing through sliding connection; the upper end of the steel casing rotary joint is inserted into the drill rod of the rotary drilling machine.

[0006] Preferably, the steel casing rotary joint comprises a trapezoidal steel plate, a circular steel plate, an upper steel casing and a connecting square groove, the trapezoidal steel plate is fixed on the circular steel plate, and the circular steel plate is fixed on the upper steel casing; the outer wall of the upper steel casing is uniformly provided with a plurality of tenons.

[0007] Preferably, the upper end of the trapezoidal steel plate is provided with a connecting square groove; a plurality of connecting openings are uniformly arranged on the connecting square groove.

[0008] Preferably, the upper end of the outer wall of the spliced steel casing and the bottom section steel casing is provided with a plurality of mortise slots; the lower end of the outer wall of the spliced steel casing is uniformly fixed with a plurality of tenons; the outer wall of the spliced steel casing and the bottom section steel casing is fixed with a support steel plate.

[0009] Preferably, the steel casing rotary joint is connected in the mortise slot of the spliced steel casing through tenon mortise connection; the spliced steel casing is connected in the mortise slot of the bottom section steel casing through tenon mortise connection.

[0010] Preferably, the bottom of the bottom section steel casing is fixed with a plurality of cutting teeth;

[0011] Preferably, the drill rod of the rotary excavator is inserted in the connecting square slot; the drill rod of the rotary excavator is connected in the opening of the square slot through the combined connector.

[0012] Preferably, the outer wall of the drill rod is uniformly provided with a plurality of longitudinal engagement tooth grooves; the lower end of the inner wall of the connecting square slot is rotatably provided with a plurality of torsion spring blocking plates, the interiors of the plurality of torsion spring blocking plates are abutted; the torsion spring blocking plate and the connecting square slot are provided with a torsion spring; the combined connector comprises a combined driver, a central combined bevel gear and an extension frame, the outer wall of the connecting square slot is uniformly fixed with a plurality of extension frames, one of the extension frames is fixed with the combined driver through an electrolytic seat, the combined driver drives the central combined bevel gear through gear engagement, and the central combined bevel gear slides in the connecting square slot through the sliding block limiting.

[0013] Preferably, the combined connector further comprises a first bevel gear transmission shaft, a second bevel gear transmission shaft, a transmission gear shaft, a driving screw shaft and a limiting support, the central combined bevel gear engages and drives the first bevel gear transmission shaft to rotate in the extension frame, the first bevel gear transmission shaft engages and drives the second bevel gear transmission shaft to rotate in the extension frame, the second bevel gear transmission shaft engages and drives the transmission gear shaft to rotate between the connecting square slot and the limiting support, the limiting support is fixed on the outer wall of the connecting square slot, and the transmission gear shaft drives the driving screw shaft to rotate in the outer wall of the connecting square slot and the limiting support through the toothed belt transmission.

[0014] Preferably, the combined connector further comprises an insertion tooth block, the driving screw shaft is connected with the insertion tooth block through thread cooperation, the insertion tooth block slides in the limiting support, and the insertion tooth block is inserted in the opening of the connecting square slot; the inner wall of the insertion tooth block is inserted in the engagement tooth groove of the outer wall of the drill rod.

[0015] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0016] The technical solutions of the present application are described in further detail below with reference to the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of this specification, illustrate embodiments of the present application, and are used to explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0018] Figure 1 is a structural schematic diagram of the installation of the present application as a whole;

[0019] Figure 2 is a structural schematic diagram of the installation of the steel casing swivel joint body and the bottom section steel casing of the present application;

[0020] Figure 3 is a structural schematic diagram of the transport and installation of the steel casing swivel joint of the present application;

[0021] Figure 4 is a front view schematic diagram of the steel casing swivel joint of the present application;

[0022] Figure 5 is a top view schematic diagram of the steel casing swivel joint of the present application;

[0023] Figure 6 is a structural schematic diagram of the spliced steel casing of the present application;

[0024] Figure 7 is a structural schematic diagram of the bottom section steel casing of the present application;

[0025] Figure 8 is a top structural schematic diagram of the spliced steel casing of the present application;

[0026] Figure 9 is a bottom structural schematic diagram of the bottom section steel casing of the present application;

[0027] Figure 10 is a bottom structural schematic diagram of the spliced steel casing of the present application;

[0028] Figure 11 is a structural schematic diagram of the dovetail connection of the present application;

[0029] Figure 12 is a connection structural schematic diagram of the connecting square groove and the combined connector of the present application Figure 1 ;

[0030] Figure 13 is a connection structural schematic diagram of the connecting square groove and the combined connector of the present application Figure 2 ;

[0031] Figure 14 is a structural schematic diagram of the combined connector of the present application;

[0032] Figure 15 is a structural schematic diagram of the connecting square groove of the present application;

[0033] Figure 16 is a structural schematic diagram of the torsion spring blocking plate of the present application;

[0034] Figure 17 is a structural schematic diagram of the combined connector of the present application Figure 1 ;

[0035] Figure 18 is a structural schematic diagram of the combined connector of the present application Figure 2 ;

[0036] Figure 19 is a structural schematic diagram of the combined connector of the present application Figure 3 .

[0037] In the figure: steel casing swivel joint 1; spliced steel casing 2; bottom section steel casing 3; tenon 4; trapezoidal steel plate 5; circular steel plate 6; upper steel casing 7; connecting square groove 8; mortise 9; support steel plate 11; bottom steel plate 13; cutting tooth 14; combined connector 15; drill rod 16; torsion spring blocking plate 17; light sensor 18; combined driver 19; central combined bevel gear 20; extension frame 21; first bevel gear transmission shaft 22; second bevel gear transmission shaft 23; transmission gear shaft 24; drive screw shaft 25; plug-in tooth block 26; limiting support 27. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0039] In the description of the present application, it should be understood that the terms "intermediate", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] In addition, unless specifically stated and limited otherwise, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0041] In this application, unless specifically stated and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature. DETAILED DESCRIPTION

[0043] As shown in Figures 1-3 A spliced rotary drilling steel casing, comprising a steel casing rotary joint 1 connected to a spliced steel casing 2 by sliding, the spliced steel casing 2 connected between the steel casing rotary joint 1 and a bottom section steel casing 3 by sliding; the upper end of the steel casing rotary joint 1 is inserted into the drill rod 16 of the rotary drilling machine.

[0044] The working principle and beneficial effects of the embodiment are as follows: a spliced rotary drilling steel casing, comprising a steel casing rotary joint 1, a spliced steel casing 2 and a bottom section steel casing 3. When the steel casing is lowered, the steel casing rotary joint 1 is first replaced with the drill of the rotary drilling machine and installed on the rotary drilling rod 16, then the tenon 4 of the steel casing rotary joint 1 is clamped in the mortise 9 of the steel casing, and the steel casing rotary joint 1 is rotated by the drill rod 16 and power head of the rotary drilling machine, thereby rotating and lowering the steel casing. The tenon and mortise structure between the steel casing rotary joint 1, the spliced steel casing 2 and the bottom section steel casing 3 makes splicing convenient and fast. Compared with the traditional welding assembly method, the tenon and mortise structure greatly saves the time of welding and assembling the steel casing, and does not need to use a vibration hammer or a static pressure hammer, thereby saving the rental cost. At the same time, the tenon and mortise structure can also reduce the influence of vibration on the cast-in-place pile when the steel casing is pulled out, thereby further improving the efficiency of the construction and realizing rapid assembly, transportation and connection, so as to improve the efficiency and convenience of the construction. DETAILED DESCRIPTION

[0046] As shown in Figures 1-12As shown, a modular rotary drilling steel casing is disclosed. The rotary joint 1 of the steel casing includes a trapezoidal steel plate 5, a circular steel plate 6, an upper steel casing 7, and a connecting square groove 8. The trapezoidal steel plate 5 is fixed on the circular steel plate 6, and the circular steel plate 6 is fixed on the upper steel casing 7. Multiple tenons 4 are evenly fixed to the outer wall of the upper steel casing 7. The upper end of the trapezoidal steel plate 5 is provided with the connecting square groove 8. Multiple connecting openings are evenly provided on the connecting square groove 8. The modular steel casing 2... Multiple tenons 9 are provided on the upper end of the outer wall of the bottom section steel casing 3; multiple tenons 4 are evenly fixed on the lower end of the outer wall of the spliced ​​steel casing 2; support steel plates 11 are fixed on the outer walls of both the spliced ​​steel casing 2 and the bottom section steel casing 3; the steel casing rotary joint 1 is connected to the tenon 9 of the spliced ​​steel casing 2 by tenons 4; the spliced ​​steel casing 2 is connected to the tenon 9 of the bottom section steel casing 3 by tenons 4; multiple cutting teeth 14 are fixed on the bottom of the bottom section steel casing 3.

[0047] The working principle and beneficial effects of this embodiment are as follows: The diameter of the casing can be freely adjusted according to the pile diameter. For casings with smaller pile diameters, thinner steel plates can be selected for the casing wall, while for larger pile diameters, thicker steel plates can be selected. The steel plate thickness used in this invention is 14mm, and the steel plate at the joint is 20mm. After repeated use, the joint may deform slightly, but this does not hinder its use. In backfilled areas containing concrete blocks, brick debris, etc., cutting teeth 14 can be added. If there are no other debris in the soil layer, cutting teeth are not necessary. When pulling out the casing, the casing is first driven to rotate using a rotary excavator. Once the casing can rotate, it is slowly pulled out. Short casing sections can be pulled out directly using a rotary excavator, while long casing sections are lifted out using a crane. The larger the casing diameter, the greater the required rotary excavator torque. Construction personnel can more conveniently perform the splicing and lowering of steel casings, greatly improving construction efficiency and economic benefits. The application of this tenon structure not only simplifies the operation steps but also reduces the risks and unnecessary costs during construction. Therefore, this patent brings significant advantages and improvements to rotary drilling steel casing construction. Specific implementation method three:

[0049] like Figure 1 — Figure 12 As shown, a modular rotary drilling steel casing is described below. The embodiments described are only some embodiments of the present invention, and not all embodiments. The specific construction steps are as follows:

[0050] 1. Before construction, select a steel casing of appropriate size according to the design requirements and install it on the steel casing rotary joint on the drill pipe;

[0051] 2. The center position of the pile foundation is determined by measurement and layout, and the rotary drilling rig drill rod 16 is used to drive the drilling tool so that the tenon of the drilling tool is inserted into the tenon groove of the bottom section steel casing 3. The steel casing is rotated and lowered by using the tenon structure.

[0052] 3. When the top of the bottom section steel casing 3 is exposed above the ground about 1 meter, the drill pipe 16 is used to take the drill from the bottom section steel casing 3, and check whether the lowering position and verticality of the bottom section steel casing 3 meet the design requirements;

[0053] 4. If it does not meet the design requirements, the bottom section steel casing 3 can be pulled out by the drill pipe 16 with the rotary joint, and the lowering operation is re-performed until the requirements are met;

[0054] 5. When the lowering position and verticality of the bottom section steel casing 3 meet the design requirements, the drill pipe 16 is used to drive the drill, so that the tenon of the drill is clamped into the mortise 9 of the spliced steel casing 2;

[0055] 6. The spliced steel casing 2 is continued to be driven by the drill pipe 16, so that the tenon 4 of the spliced steel casing 2 is clamped into the top mortise 9 of the bottom section steel casing 3, and the spliced steel casing 3 and the bottom section steel casing 3 are continued to be lowered together;

[0056] 7. According to the design requirements of the steel casing construction length and the current length of the bottom section steel casing 3 and the spliced steel casing 2, it is determined whether the spliced steel casing 2 needs to be increased, and if so, the above steps are repeated. Specific embodiment four:

[0058] As shown in Figure 13 and Figure 19 , a spliced rotary drilling steel casing, the connecting square groove 8 is inserted with the drill pipe 16 of the rotary drilling machine, and the drill pipe of the rotary drilling machine is connected in the opening of the connecting square groove 8 through the combined connector 15; the outer wall of the drill pipe 16 is uniformly provided with a plurality of longitudinal meshing tooth grooves; a plurality of torsion spring blocking plates 17 are rotatably arranged at the lower end of the inner wall of the connecting square groove 8, and the interiors of the plurality of torsion spring blocking plates 17 are in close contact; a torsion spring is arranged between the torsion spring blocking plate 17 and the connecting square groove 8; the combined connector 15 includes a combined driver 19, a central combined bevel gear 20 and an extension frame 21, the outer wall of the connecting square groove 8 is uniformly fixed with a plurality of extension frames 21, one of the extension frames 21 is fixed with the combined driver 19 through the electrolytic seat, the combined driver 19 drives the central combined bevel gear 20 through gear engagement, and the central combined bevel gear 20 slides in the connecting square groove 8 through the sliding block limiting.

[0059] The working principle and beneficial effects of the embodiment are as follows: in combination with different use, installation and transportation environments, the drill pipe 16 is inserted into the connecting square groove 8, a plurality of torsional spring blocking plates 17 are blocked by extrusion induction, an induction signal is received, the combined connector 15 is automatically driven, the overall combined connector 15 is further slid in the connecting square groove 8, the plurality of longitudinal engagement tooth grooves of the drill pipe 16 are inserted, the connecting square groove 8 is automatically connected with the drill pipe 16 through the combined connector 15, automatic connection is realized to avoid manual operation, the stability of connection is ensured, the overall synchronous driving and connection of multiple surfaces are ensured, and the stability of connection is ensured; the torsional spring blocking plates 17 are provided with torsional springs between the connecting square groove 8 to facilitate automatic reset and top shielding; meanwhile, the inner walls of the plurality of torsional spring blocking plates 17 are in abutment to facilitate automatic interference blocking, the overall shielding is facilitated, the photosensitive sensor 18 is facilitated to receive a signal and further transmit the signal to the combined driver 19. DETAILED DESCRIPTION

[0061] As shown in Figure 13 and Figure 19 , a splicable rotary drilling type steel casing, the combined connector 15 further comprises a first bevel gear shaft 22, a second bevel gear shaft 23, a transmission gear shaft 24, a drive screw shaft 25 and a limiting support 27, the central combined bevel gear 20 meshes and drives the first bevel gear shaft 22 to rotate in the extension frame 21, the first bevel gear shaft 22 meshes and drives the second bevel gear shaft 23 to rotate in the extension frame 21, the second bevel gear shaft 23 meshes and drives the transmission gear shaft 24 to rotate between the connecting square groove 8 and the limiting support 27, the limiting support 27 is fixed to the outer wall of the connecting square groove 8, the transmission gear shaft 24 drives the drive screw shaft 25 to rotate in the outer wall of the connecting square groove 8 and the limiting support 27 through toothed belt transmission; the combined connector 15 further comprises a plug-in tooth block 26, the drive screw shaft 25 is connected to the plug-in tooth block 26 through thread cooperation, the plug-in tooth block 26 is limited to slide in the limiting support 27, and the plug-in tooth block 26 is limited to plug into the opening of the connecting square groove 8; the inner wall of the plug-in tooth block 26 is meshed and plugged into the engagement tooth groove of the outer wall of the drill pipe 16.

[0062] The working principle and beneficial effects of the embodiment are as follows: the downwardly extruded plurality of torsion spring blocking plates 17 transmit signals through the light sensor 18, and then the combined driver 19 receives the signals, is driven, and drives the central combined bevel gear 20 to rotate in the connecting square groove 8 through gear engagement, and then synchronously drives the plurality of first bevel gear transmission shafts 22, and then synchronously drives the plurality of second bevel gear transmission shafts 23, the transmission gear shaft 24, and the driving screw shaft 25 to synchronously rotate, so that the driving screw shaft 25 rotates in the limiting support 27, and then the plug-in tooth block 26 is driven to limit and slide in the limiting support 27 and the opening of the connecting square groove 8 to displace inward, is inserted into the meshing tooth groove on the outer wall of the drill pipe 16, and then the connection is achieved; in order to be separated, the combined driver 19 is reversely driven, and then the connection of the drill pipe 16 and the steel casing rotary joint 1 of the rotary excavator is quickly, stably and automatically achieved.

[0063] The above description is not a limitation of the present application, and the present application is not limited to the above examples. Changes, modifications, additions or replacements made by ordinary skilled persons in the technical field within the essential scope of the present application also belong to the protection scope of the present application.

Claims

1. A splicable rotary drilling steel casing, characterized by: The steel casing rotary joint (1) is connected on the spliced steel casing (2) through sliding connection, and the spliced steel casing (2) is connected between the steel casing rotary joint (1) and the bottom section steel casing (3) through sliding connection; the upper end of the steel casing rotary joint (1) is inserted into the drill rod (16) of the rotary excavator; The steel casing rotary joint (1) comprises a trapezoidal steel plate (5), a circular steel plate (6), an upper steel casing (7) and a connecting square groove (8), the trapezoidal steel plate (5) is fixed on the circular steel plate (6), and the circular steel plate (6) is fixed on the upper steel casing (7); the outer wall of the upper steel casing (7) is uniformly provided with a plurality of tenons (4); The upper end of the trapezoidal steel plate (5) is provided with the connecting square groove (8); a plurality of connecting openings are uniformly arranged on the connecting square groove (8); The drill rod (16) of the rotary excavator is inserted into the connecting square groove (8), and the drill rod (16) of the rotary excavator is connected in the opening of the connecting square groove (8) through the combined connector (15). The outer wall of the drill rod (16) is uniformly provided with a plurality of longitudinal meshing tooth grooves; a plurality of torsion spring blocking plates (17) are rotatably arranged at the lower end of the inner wall of the connecting square groove (8), and the interiors of the plurality of torsion spring blocking plates (17) are abutted; a torsion spring is arranged between the torsion spring blocking plate (17) and the connecting square groove (8); the combined connector (15) comprises a combined driver (19), a central combined bevel gear (20) and an extension frame (21), a plurality of extension frames (21) are uniformly fixed on the outer wall of the connecting square groove (8), one of the extension frames (21) is fixed with the combined driver (19) through an electrolytic seat, the combined driver (19) drives the central combined bevel gear (20) through gear meshing, and the central combined bevel gear (20) slides in the connecting square groove (8) through sliding block limiting; The combined connector (15) further comprises a first bevel gear transmission shaft (22), a second bevel gear transmission shaft (23), a transmission gear shaft (24), a driving screw shaft (25) and a limiting support (27), the central combined bevel gear (20) meshes and drives the first bevel gear transmission shaft (22) to rotate in the extension frame (21), the first bevel gear transmission shaft (22) meshes and drives the second bevel gear transmission shaft (23) to rotate in the extension frame (21), the second bevel gear transmission shaft (23) meshes and drives the transmission gear shaft (24) to rotate between the connecting square groove (8) and the limiting support (27), the limiting support (27) is fixed on the outer wall of the connecting square groove (8), and the transmission gear shaft (24) drives the driving screw shaft (25) to rotate in the outer wall of the connecting square groove (8) and the limiting support (27) through toothed belt transmission.

2. A splicable rotary drilling steel casing according to claim 1, characterized in that: The upper end of the outer wall of the spliced steel casing (2) and the bottom section steel casing (3) is provided with a plurality of tenon grooves (9); the lower end of the outer wall of the spliced steel casing (2) is uniformly fixed with a plurality of tenons (4); the outer walls of the spliced steel casing (2) and the bottom section steel casing (3) are fixed with support steel plates (11).

3. A splicable rotary drilling steel casing according to claim 2, characterised in that: The steel casing rotary joint (1) is connected in the tenon groove (9) of the spliced steel casing (2) through the tenon (4); the spliced steel casing (2) is connected in the tenon groove (9) of the bottom section steel casing (3) through the tenon (4).

4. A splicable rotary drilling steel casing according to claim 2, characterized in that: The bottom section of the steel casing (3) is fixed with multiple cutting teeth (14).

5. A splicable rotary drilling steel casing according to claim 1, characterized in that: The combined connector (15) further comprises a plug tooth block (26), the driving screw shaft (25) is connected with the plug tooth block (26) through thread cooperation, the plug tooth block (26) is limited to slide in the limiting support (27), and the plug tooth block (26) is limited to plug in the opening of the connecting square groove (8); the inner wall of the plug tooth block (26) is engaged and plugged into the engagement tooth groove on the outer wall of the drill rod (16).

Images