Mounting rack for square pile drill bit and telescopic two-wheel hydraulic square pile drill bit

Abstract

The utility model belongs to the technical field of foundation pit rotary excavating equipment, and particularly relates to a mounting rack and a telescopic two-wheel hydraulic square pile drill bit. Comprising a rack body and an anti-rotation frame assembly, the anti-rotation frame assembly comprises first adjusting parts, second adjusting parts and an anti-rotation positioning part, the first adjusting parts are arranged on the two opposite sides of the rack body respectively, and the two second adjusting parts are arranged at the end, away from the rack body, of each first adjusting part in the width direction of the anti-rotation frame assembly. The anti-rotation positioning part is arranged at the end part of each second adjusting part; by adjusting the first adjusting part and the second adjusting part, the anti-rotation positioning part moves in the length direction and the width direction of the rack main body; during excavation, the positioning working face of the anti-rotation positioning part makes contact with the side wall of the square pile hole in the length direction and / or the width direction, and positioning and rotation prevention of the drill bit are achieved. Square piles with different sizes can be machined, and positioning and rotation prevention can be achieved without replacing parts of a mounting rack.

Description

TECHNICAL FIELD

[0001] The utility model belongs to foundation pit rotary digging equipment technical field, concretely relates to installation rack and telescopic two -wheeled hydraulic square pile drill bit. BACKGROUND

[0002] In square pile construction, generally first use round drill bit to carry out pre-drilling, make square pile into similar plum-blossom pile type shape, but this kind of mode cannot become standard square pile hole, four corners will appear the part that round drill bit cannot process and need to be trimmed, at this moment need special square pile drill bit to trim and process it. Round drill bit drilling is according to the size of required operation square pile size to adopt one time or multiple drilling. When multiple drilling, after first round hole drilling is finished, when remaining round hole drilling is carried out, since the drilled round hole one side has no soil and stone to attach wall to drill bit, it is easy to appear drilling round drill bit inclination and other problems, lead to subsequent construction process complex, construction difficult and other defects, thus make construction method change into only one round hole drilling is very necessary.

[0003] In practical application, the size of square pile hole is various, such as 1.5m*2m, 1.5m*2.5m, 1.8m*2m, 1.8m*2.4m, 2m*2m, 2m*2.5m and the like. If one kind of square pile hole size corresponds to one kind of drill bit, then multiple square pile drill bits will appear in construction site, which will bring the problems of multiple square pile drill bit sizes, equipment management difficulty, high management cost, difficult batch production to square pile drill bit production side and use side, so a square pile drill bit with strong adaptability is needed. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides installation rack and telescopic two -wheeled hydraulic square pile drill bit, through replacing different size excavating assembly or increasing extension excavating assembly, the effect of processing square pile hole of different sizes can be realized.

[0005] To achieve the above object, the utility model adopts the technical scheme of: the installation rack for square pile drill bit, including rack main body, anti-rotation frame assembly, the anti-rotation frame assembly includes first adjusting part, second adjusting part, anti-rotation positioning part, the opposite sides of the rack main body are respectively provided with the first adjusting part, the end of each first adjusting part away from the rack main body is provided with two second adjusting parts along the width direction of anti-rotation frame assembly, and the end of each second adjusting part is provided with the anti-rotation positioning part;By adjusting the first adjusting part and the second adjusting part, the anti-rotation positioning part moves along the length and width direction of the rack main body;When excavating, the positioning working surface of the anti-rotation positioning part is in contact with the length direction side wall of the square pile hole, and / or the positioning working surface of the anti-rotation positioning part is in contact with the width direction side wall of the square pile hole, to realize drill bit positioning and anti-rotation.

[0006] Preferably, the anti-rotation positioning part has a circular arc positioning surface, and the circular arc positioning surface is in contact with the side wall of the square pile hole to achieve the anti-rotation positioning of the drill bit.

[0007] Preferably, the anti-rotation frame part is arranged in the width direction of the frame body; the first adjusting part is a length adjusting frame, and the distance between the two anti-rotation positioning parts in the length direction of the frame body is adjusted to correspond to the length of the square pile hole by adjusting the length adjusting frame; and the second adjusting part is a width adjusting frame, and the distance between the two anti-rotation positioning parts in the width direction of the frame body is adjusted to correspond to the width of the square pile hole by adjusting the width adjusting frame.

[0008] Preferably, the frame body has a plurality of mounting positions of the length adjusting frame in the length direction of the frame body, so as to adjust the distance between the two anti-rotation positioning parts in the length direction of the frame body to correspond to the length of the square pile hole; and the length adjusting frame has a plurality of mounting positions of the anti-rotation positioning part in the width direction of the length adjusting frame, so as to adjust the distance between the two anti-rotation positioning parts in the width direction of the frame body to correspond to the width of the square pile hole.

[0009] Preferably, the length adjusting frame is provided with a plurality of first width adjusting positioning holes in the width direction of the length adjusting frame, and the width adjusting frame is provided with a plurality of second width adjusting positioning holes corresponding to the connection positions of the first width adjusting positioning holes.

[0010] Alternatively, the length adjusting frame is provided with a plurality of first width adjusting screw holes in the width direction of the length adjusting frame, the width adjusting frame is provided with a plurality of second width adjusting screw through holes corresponding to the connection positions of the first width adjusting screw holes, and the length adjusting frame is provided with a plurality of first nuts corresponding to the first width adjusting screw holes.

[0011] Preferably, the frame body comprises a top plate.

[0012] The length adjusting frame is provided with a plurality of first length adjusting positioning holes in the length direction of the length adjusting frame, and the top plate is provided with a plurality of second length adjusting positioning holes corresponding to the connection positions of the first length adjusting positioning holes.

[0013] Alternatively, the length adjusting frame is provided with a plurality of first length adjusting screw through holes in the length direction of the length adjusting frame, the top plate is provided with a plurality of second length adjusting screw holes corresponding to the connection positions of the first length adjusting screw through holes, and the top plate is provided with a plurality of second nuts corresponding to the second length adjusting screw holes.

[0014] Preferably, the top plate is provided with a guide cylinder in the length direction of the top plate, and the length adjusting frame is provided with a guide column matched with the guide cylinder.

[0015] Or, the top plate is provided with a guide groove along the length direction thereof, and the length adjusting frame is provided with a guide column matched with the guide groove.

[0016] Correspondingly, the telescopic two-wheel hydraulic square pile drill bit comprises a digging assembly and the mounting rack, two digging assemblies are coaxially arranged at the lower part of the rack main body, and the anti-rotation rack assembly is arranged at the upper part of the rack main body.

[0017] Preferably, the digging assembly is coaxially connected with an extended digging assembly, and the digging diameter of the extended digging assembly is greater than or equal to the digging diameter of the digging assembly.

[0018] Preferably, the rack main body comprises a top plate and a vertical plate, the top plate is provided with a connecting square head at the upper end, two vertical plates are symmetrically arranged at the lower end of the top plate, and the two vertical plates are connected through a sealing plate, so that an internal hollow box structure is formed between the two vertical plates, the sealing plate and the top plate, and the box structure is used for accommodating a hydraulic oil pipe.

[0019] And / or, the digging walking assembly for driving the digging assembly to rotate is further included, the digging walking assembly comprises a hydraulic motor and a speed reducer connected with the hydraulic motor, mounting barrels are arranged through the two vertical plates in the horizontal direction, conversion mounting plates are mounted at both ends of the mounting barrels, the speed reducer is connected with the mounting barrels through the conversion mounting plates, and the digging assembly is connected with the output end of the speed reducer.

[0020] And / or, the digging assembly and the extended digging assembly each comprise a digging wheel and digging teeth, and a plurality of digging teeth are arranged on the digging wheel; a first connecting plate is arranged at one end of the digging wheel of the digging assembly close to the extended digging assembly, a plurality of first connecting holes are arranged on the first connecting plate; a second connecting plate is arranged at one end of the digging wheel of the extended digging assembly close to the digging assembly, a plurality of second connecting holes are arranged on the second connecting plate, and the second connecting holes correspond to the first connecting holes.

[0021] The application has the following beneficial effects:

[0022] By replacing different size of digging assembly or adding one or more extension digging assembly, by adjusting the distance between the two anti-rotation positioning parts on the length adjustment frame, the distance corresponds to the width direction of the square pile hole, the positioning surface of the anti-rotation positioning part contacts with the length direction side wall of the square pile hole during digging, the anti-rotation positioning is realized. By adjusting the distance between the two length adjustment frames on the frame body, the distance between the two anti-rotation positioning parts in the length direction of the square pile hole can be adjusted, the distance corresponds to the length of the square pile hole, the positioning surface of the anti-rotation positioning part in the length direction contacts with the width direction side wall of the square pile hole during digging, the anti-rotation positioning is realized. The anti-rotation positioning can be realized from the width or length direction, or from the width and length direction at the same time, better anti-rotation positioning is realized. For different square pile sizes, only the digging assembly needs to be replaced or the extension digging assembly is added, and the positioning anti-rotation can be realized without replacing the parts, so that the square pile drill becomes a flexible and combinable universal square pile drill. At the same time, by adding an extension digging assembly with a larger digging circle to one digging assembly, the processing of special-shaped square pile holes, such as T-shaped square pile processing, is realized, and the versatility and flexibility of the universal square pile drill are more embodied. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an exploded view of the square pile drill, and L1 in the figure is the length direction of the square pile hole, and W1 is the width direction of the square pile hole;

[0024] Figure 2 It is a sectional view of the square pile drill;

[0025] Figure 3 It is a perspective view of the frame body;

[0026] Figure 4 It is a perspective view of the length adjustment frame, and L2 in the figure is the length direction of the anti-rotation frame assembly, and W2 is the width direction of the anti-rotation frame assembly;

[0027] Figure 5 It is a perspective view of the digging assembly with a larger digging circle;

[0028] Figure 6 It is a perspective view of the extension digging assembly;

[0029] Figure 7 It is a perspective view of the extension digging assembly with a larger digging circle;

[0030] Figure 8 It is a top view of the square pile drill, and A1 in the figure is the distance of the anti-rotation positioning part in the length direction, and A2 is the distance of the anti-rotation positioning part in the width direction; B1 is the length of the square pile hole, and B2 is the width of the square pile hole.

[0031] In the figure: connecting square head 1, top plate 2, vertical plate 3, mounting cylinder 4, hydraulic motor 5, conversion mounting plate 6, reducer 7, excavating wheel 8, excavating tooth 9, first connecting plate 10, anti-rotation positioning part 11, width adjustment frame 12, second width adjustment positioning hole 13, length adjustment frame 14, first length adjustment positioning hole 15, second length adjustment positioning hole 16, guide cylinder 17, guide column 18, second nut 19, first nut 20, first width adjustment positioning hole 21, second connecting plate 22. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be noted that, for ease of description, the length and width of the square drill bit are respectively the same as the length and width of the frame body and the top plate. The length and width of the square drill bit are respectively the same as the length and width of the square pile hole.

[0035] "Positioning and anti-rotation" refers to preventing the square pile drill bit from swinging or deflecting back and forth, left and right during excavation.

[0036] like Figures 1-8The utility model discloses a mounting rack for square pile drill bit, including rack main body, anti -rotation frame subassembly, the anti -rotation frame subassembly includes first adjusting part, second adjusting part, anti -rotation positioning part 11, the rack main body opposite both sides respectively set up first adjusting part, the end of each first adjusting part away from rack main body, two second adjusting parts are arranged along the width direction of anti -rotation frame subassembly, and the end of each second adjusting part away from first adjusting part sets up anti -rotation positioning part 11, by adjusting first adjusting part, second adjusting part, anti -rotation positioning part 11 moves along the length, width direction of rack main body, when excavating, make the positioning work surface of anti -rotation positioning part in the length direction of rack main body and the side wall of square pile hole length direction contact, and / or, make the positioning work surface of anti -rotation positioning part in the width direction of rack main body and the side wall of square pile hole width direction contact, realize the positioning of drill bit and prevent rotation.

[0037] The structure form of first adjusting part and second adjusting part can be self-extensible adjusting plate, adjusting frame, adjusting rod, adjusting box and the like form, or first adjusting part and rack main body are slidably connected, and second adjusting part and first adjusting part are slidably connected, or the connecting position between first adjusting part and rack main body is different, and the connecting position between second adjusting part and first adjusting part is different.

[0038] Only two length direction anti -rotation positioning parts 11 and square pile hole side wall contact, can realize the positioning of drill bit and prevent rotation, only two width direction anti -rotation positioning parts 11 and square pile hole side wall contact, can also realize the positioning of drill bit and prevent rotation, two length direction anti -rotation positioning parts 11 and square pile hole side wall contact, simultaneously, two width direction anti -rotation positioning parts 11 and square pile hole side wall contact, realize positioning and prevent rotation from four directions, and the anti -rotation effect is better.

[0039] Two anti -rotation frame subassembly can be arranged on the two wide edges of rack main body respectively, also can be arranged on the two long edges of rack main body respectively, and the specific setting condition is set according to user demand.

[0040] The positioning work surface of anti -rotation positioning part 11 can be arc surface, plane and the like.

[0041] More optimal implementation, the anti -rotation positioning part 11 has circular arc positioning surface, and the circular arc positioning surface contacts square pile hole side wall when excavating, realizes the positioning of drill bit and prevents rotation. Anti -rotation positioning part 11 can be the cylinder structure, such as anti -rotation positioning cylinder, Figure 1As shown, the cylindrical structure is composed of a cylindrical structure with arc-shaped ends and a plate structure, and the cylindrical structure is vertically arranged along the height direction of the square pile drill bit; or, it can be an arc-shaped block or an arc-shaped plate, any cross-sectional shape of the arc-shaped block or the arc-shaped plate is an incomplete circle and each cross-sectional shape is the same, and the arc-shaped surface of the arc-shaped block or the arc-shaped plate is used for positioning and anti-rotation, and the arc-shaped surface is vertically arranged along the height direction of the square pile drill bit; or, it can be a combination of an arc-shaped block or an arc-shaped plate on one side and a square block or other structures on the other side, wherein the arc-shaped block or the arc-shaped plate is integrally formed with the square block to jointly constitute the anti-rotation positioning part; or other embodiments.

[0042] Further, as shown, Figures 5-7 At this time, the first adjusting part is a length adjusting frame 14, and by adjusting the length adjusting frame 14, the distance between the two anti-rotation positioning parts 11 in the length direction of the rack main body corresponds to the length of the square pile hole; the second adjusting part is a width adjusting frame 12, and by adjusting the width adjusting frame 12, the distance between the two anti-rotation positioning parts 11 in the width direction of the rack main body corresponds to the width of the square pile hole.

[0043] Further, the rack main body has multiple mounting positions of the length adjusting frame 14 along the length direction thereof, that is, the mounting positions of the two anti-rotation frame assemblies on the rack main body are adjustable to adjust the distance between the two anti-rotation positioning parts 11 in the length direction of the drill bit to correspond to the length of the dug square pile hole, and the purpose is to change the positions of the two anti-rotation frame assemblies relative to the rack main body, so that the distance between the two anti-rotation positioning parts 11 in the length direction is slightly smaller than the length of the square pile hole. The difference a between the two can be 10-100mm or 10-150mm or 10-300mm or other value ranges, and the difference a can be even larger, and the specific size is determined according to user demand and actual conditions. The length of the square pile hole is larger, and the difference a can also be larger, for example, for a square pile hole with a length of 3m, the difference a can be 500mm, and at this time, the drill bit positioning and anti-rotation can also be achieved. Preferably, the smaller the difference a, the better the anti-rotation effect.

[0044] The length adjusting frame 14 has multiple mounting positions of the anti-rotation positioning part 11 along the width direction thereof, that is, the mounting positions of the two anti-rotation positioning parts 11 on the length adjusting frame 14 are adjustable to adjust the distance between the two anti-rotation positioning parts 11 in the width direction of the drill bit to correspond to the width of the dug square pile hole, and the purpose is to change the positions of the two anti-rotation positioning parts 11 relative to the length adjusting frame 14 or the rack main body, so that the distance between the two anti-rotation positioning parts 11 on each length adjusting frame 14 is slightly smaller than the width of the square pile hole. The difference b between the two can be 10-100mm or 10-150mm or 10-300mm or other value ranges, and the difference b can be even larger, and the specific size is determined according to user demand and actual conditions. Preferably, the smaller the difference b, the better the anti-rotation effect.

[0045] Furthermore, the anti-rotation positioning portion 11 is connected to the length adjustment frame 14 via the width adjustment frame 12. The length adjustment frame 14 is provided with a plurality of first width adjustment positioning holes 21 along its width, and the width adjustment frame 12 is provided with a plurality of second width adjustment positioning holes 13 corresponding to the first width adjustment positioning holes 21. The connection positions of the first width adjustment positioning holes 21 and the second width adjustment positioning holes 13 are correspondingly arranged. A locking bolt passes through the first width adjustment positioning holes 21 and the second width adjustment positioning holes 13 to secure the width adjustment frame 12 to the length adjustment frame 14, thereby changing the position of the width adjustment frame 12 on the length adjustment frame 14 and thereby adjusting the distance between the two anti-rotation positioning portions 11 along the width direction of the square pile hole.

[0046] Furthermore, the first width adjustment positioning hole 21 serves as a threaded hole for a first width adjustment screw, and the second width adjustment positioning hole 13 serves as a through hole for a second width adjustment screw. A plurality of first nuts 20 are provided on the side of the length adjustment frame 14 away from the width adjustment frame 12. The positions of the first nuts 20 correspond to the positions of the first width adjustment positioning holes 21. The first nuts 20 can be welded to the length adjustment frame 14, in which case the width adjustment frame 12 and the length adjustment frame 14 are secured together using locking screws or bolts.

[0047] Furthermore, the length adjustment bracket 14 is provided with a plurality of first length adjustment holes 15 along its length, and the top plate 2 is provided with a plurality of second length adjustment holes 16 corresponding to the first length adjustment holes 15. The connecting positions of the first and second length adjustment holes 15, 16 are correspondingly arranged. A locking bolt passes through the first and second length adjustment holes 15, 16, securing the top plate 2 to the length adjustment bracket 14. Adjusting the position of the length adjustment bracket 14 on the top plate 2 thereby adjusts the distance between the two anti-rotation locating portions 11 along the length of the square pile hole.

[0048] Furthermore, the first length adjustment positioning hole 15 is a through hole for a first length adjustment screw, and the second length adjustment positioning hole 16 is a threaded hole for a second length adjustment screw. A plurality of second nuts 19 are provided on the top plate 2, and the positions of the second nuts 19 correspond to the positions of the second length adjustment positioning holes 16. The second nuts 19 can be welded to the top plate 2, and the top plate 2 and the length adjustment frame 14 are fixed together by locking screws or bolts.

[0049] Specifically, the length adjustment frame 14 is in a “┤” shape, the first length adjustment positioning hole 15 is arranged in a horizontal portion of the length adjustment frame 14 , and the first width adjustment positioning hole 21 is arranged in a transverse portion of the length adjustment frame 14 .

[0050] Further, the top plate 2 is provided with a guide cylinder 17 along the length direction thereof, and the length adjusting frame 14 is provided with a guide column 18 matched with the guide cylinder 17. The guide cylinder 17 and the guide column 18 are connected in sliding fit, so that the length adjusting frame 14 is positioned and slidably guided.

[0051] Alternatively, the top plate 2 is provided with a guide groove along the length direction thereof, and the length adjusting frame 14 is provided with a guide column 18 matched with the guide groove. The guide groove and the guide column 18 are connected in sliding fit, so that the length adjusting frame 14 is positioned and slidably guided.

[0052] The mounting rack disclosed in the application can realize positioning and anti-rotation of the square pile drill bit when processing square pile holes with different lengths and widths, without the need of replacing parts of the mounting rack as in the conventional square pile drill bit, thereby increasing the flexibility and adaptability of the square pile drill bit.

[0053] The utility model discloses still a kind of telescopic two-wheel hydraulic square pile drill bit, including mounting rack, excavating component, and mounting mechanism includes rack main body, anti-rotation frame component, the rack main body lower part is coaxially provided with two the excavating component, the rack main body opposite side is provided with the anti-rotation frame component. The anti-rotation frame component includes length adjusting frame 14, width adjusting frame 12, anti-rotation positioning part 11, the anti-rotation positioning part 11 has circular arc positioning surface, and the circular arc positioning surface is contacted and positioned with the inner wall of square pile hole, prevent square pile drill bit from swinging left and right when processing;Length adjusting frame 14 one end is connected with rack main body, and the other end is connected with the anti-rotation positioning part 11 by width adjusting frame 12, and two anti-rotation positioning parts 11 are correspondingly provided on each length adjusting frame 14 along its width direction;By adjusting length adjusting frame 14, width adjusting frame 12, the distance of two anti-rotation positioning parts 11 in width direction after adjustment corresponds with the width of the square pile, and / or, the distance of two anti-rotation positioning parts 11 in length direction after adjustment corresponds with the length of the square pile, so that anti-rotation positioning part 11 is contacted with the length direction side wall of square pile hole, and the positioning of drill bit is realized Anti-rotation.

[0054] As shown in Figure 5 And 6 As shown, for square pile holes of different sizes, different sizes of excavating components can be replaced, or extension excavating components can be added to existing excavating components, and only the positional relationship of the four anti-rotation positioning parts 11 needs to be adjusted to realize positioning and anti-rotation of the square pile drill bit to adapt to square pile hole excavation of different sizes.

[0055] In particular, as shown in Figure 7 One of the excavating components can be coaxially connected with an extension excavating component, and the digging circle size of the extension excavating component is greater than that of the excavating component, so that T-shaped square pile hole excavation can be realized.

[0056] Furthermore, both the excavation assembly and the extended excavation assembly include an excavation wheel 8 and excavation teeth 9. The excavation wheel 8 is provided with a plurality of excavation teeth 9, and the arrangement of the excavation teeth 9 can be set arbitrarily. The excavation wheel 8 of the excavation assembly is provided with a first connecting plate 10 at one end near the extended excavation assembly, and the first connecting plate 10 is provided with a plurality of first connecting holes. The excavation wheel 8 of the extended excavation assembly is provided with a second connecting plate 22 at one end near the excavation assembly, and the second connecting plate 22 is provided with a plurality of second connecting holes, the position and number of the second connecting holes corresponding to the position and number of the first connecting holes. The first and second connecting holes are screw holes, and the extended excavation assembly is fixed to the excavation assembly by means of locking screws or locking bolts that match the first and second connecting holes, thereby changing the excavation profile range of the square pile drill bit and improving the adaptability of the square pile drill bit.

[0057] Furthermore, the frame body includes a top plate 2 and a vertical plate 3. The upper surface of the top plate 2 is provided with a connecting square head 1, which is connected to the operating square head of the rotary drilling rig to realize the operation, installation and fixation of the entire square pile drill bit; the vertical plate 3 is fixedly provided on the lower surface of the top plate 2, and the two vertical plates 3 are symmetrically arranged and connected by a sealing plate, so that an internal hollow box is formed between the two vertical plates 3, multiple sealing plates and the top plate 2, and the box can be used to accommodate hydraulic oil pipes; a mounting tube 4 is provided on the vertical plate 3 in the horizontal direction, and the two ends of the mounting tube 4 have excavation component installation stations.

[0058] The excavator travel assembly further includes a hydraulic motor 5 and a reducer 7 connected to the hydraulic motor 5. A conversion mounting plate 6 is mounted on each end of the mounting barrel 4. The reducer 7 is connected to the mounting barrel 4 via the conversion mounting plate 6. The excavator wheel 8 is connected to the output end of the reducer 7. All connected components are positioned and connected. The hydraulic motor 5 drives the reducer 7, which then drives the excavator wheel 8 after reducing the speed.

[0059] The working principle of the telescopic two-wheel hydraulic square pile drill bit is as follows: by replacing the digging assembly of different sizes or adding one or more extended digging assemblies, the distance between the two anti-rotation positioning portions 11 on the length adjusting frame 14 is adjusted, so that the distance corresponds to the width direction of the square pile hole, the positioning surface of the anti-rotation positioning portion 11 is in contact with the length direction side wall of the square pile hole during digging, and anti-rotation positioning is realized. By adjusting the distance between the two length adjusting frames 14 on the main frame body, the distance between the two anti-rotation positioning portions 11 in the length direction of the square pile hole can be adjusted, so that the distance corresponds to the length of the square pile hole, and the positioning surface of the anti-rotation positioning portion 11 in the length direction is in contact with the width direction side wall of the square pile hole during digging, and anti-rotation positioning is realized. Anti-rotation positioning can be realized from the width or length direction, or from both the width and length directions, to achieve better anti-rotation positioning. For different square pile sizes, only the digging assembly needs to be replaced or the extended digging assembly needs to be added, and the anti-rotation positioning can be realized without replacing the parts, so that the square pile drill bit becomes a flexible and combinable universal square pile drill bit. At the same time, by adding an extended digging assembly with a larger digging circle size to one of the digging assemblies, the processing of special-shaped square pile holes, such as T-shaped square pile processing, can be realized, which further reflects the versatility and flexibility of the universal square pile drill bit.

[0060] The above-described embodiments are only used to describe the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications, variations, modifications and replacements of the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A mounting frame for a square pile bit, characterised in that: The anti-rotation frame assembly includes a first adjusting part, a second adjusting part, and an anti-rotation positioning part (11). The first adjusting part is arranged on the opposite sides of the frame body. The second adjusting part is arranged on the end of the first adjusting part away from the frame body. The anti-rotation positioning part (11) is arranged on the end of the second adjusting part. The anti-rotation positioning part (11) is moved along the length and width directions of the frame body by adjusting the first adjusting part and the second adjusting part. When digging, the positioning surface of the anti-rotation positioning part (11) is in contact with the side wall of the square pile hole in the length direction and / or the width direction, thereby realizing the positioning and anti-rotation of the drill bit.

2. The mounting rack for square pile drill bits according to claim 1, characterized in that: The anti-rotation positioning part (11) has a circular arc positioning surface. When positioning and anti-rotation, the circular arc positioning surface is in contact with the side wall of the square pile hole, thereby realizing the positioning and anti-rotation of the drill bit.

3. The mounting rack for square pile drill bits according to claim 1, characterized in that: The anti-rotation frame part is arranged in the width direction of the frame body. The first adjusting part is a length adjusting frame (14). The distance between the two anti-rotation positioning parts (11) in the length direction of the frame body is adjusted by adjusting the length adjusting frame (14) to correspond to the length of the square pile hole. The second adjusting part is a width adjusting frame (12). The distance between the two anti-rotation positioning parts (11) in the width direction of the frame body is adjusted by adjusting the width adjusting frame (12) to correspond to the width of the square pile hole.

4. The mounting rack for square pile drill bits according to claim 3, characterized in that: The frame body has multiple mounting positions of the length adjusting frame (14) in the length direction thereof, so as to adjust the distance between the two anti-rotation positioning parts (11) in the length direction of the frame body to correspond to the length of the square pile hole to be dug. The length adjusting frame (14) has multiple mounting positions of the anti-rotation positioning part (11) in the width direction thereof, so as to adjust the distance between the two anti-rotation positioning parts (11) in the width direction of the frame body to correspond to the width of the square pile hole to be dug.

5. The mounting rack for square pile drill bits according to claim 4, characterized in that: The length adjusting frame (14) is provided with multiple first width adjusting positioning holes (21) in the width direction thereof. The width adjusting frame (12) is provided with multiple second width adjusting positioning holes (13) corresponding to the connection positions of the first width adjusting positioning holes (21). Alternatively, the length adjusting frame (14) is provided with multiple first width adjusting screw holes in the width direction thereof. The width adjusting frame (12) is provided with multiple second width adjusting screw through holes corresponding to the connection positions of the first width adjusting screw holes. The length adjusting frame (14) is provided with multiple first nuts (20) corresponding to the first width adjusting screw holes.

6. A mounting rack for a square pile drill bit according to claim 4 or 5, characterised in that: The frame body includes a top plate (2). The length adjusting frame (14) is provided with multiple first length adjusting positioning holes (15) in the length direction thereof. The top plate (2) is provided with multiple second length adjusting positioning holes (16) corresponding to the connection positions of the first length adjusting positioning holes (15). Or, a plurality of first length adjustment screw through holes are arranged on the length adjustment frame (14) along the length direction thereof, a plurality of second length adjustment screw holes corresponding to the connection positions of the first length adjustment screw through holes are arranged on the top plate (2), and a plurality of second nuts (19) corresponding to the second length adjustment screw holes are arranged on the top plate (2).

7. The mounting rack for a square pile drill head according to claim 6, wherein: A guide cylinder (17) is arranged on the top plate (2) along the length direction thereof, and a guide column (18) adapted to the guide cylinder (17) is arranged on the length adjustment frame (14). Or, a guide groove is arranged on the top plate (2) along the length direction thereof, and a guide column adapted to the guide groove is arranged on the length adjustment frame (14).

8. A telescopic two-wheel hydraulic morrison bit, characterized in that: The mounting rack comprises a digging assembly and the mounting rack as claimed in any one of claims 1-7, two digging assemblies are coaxially arranged on the lower part of the rack body, and the anti-rotation frame assembly is arranged on the upper part of the rack body.

9. The telescoping two-wheel hydraulic morrow bit of claim 8, wherein: The digging assembly is coaxially connected with an extended digging assembly, and the digging diameter of the extended digging assembly is greater than or equal to the digging diameter of the digging assembly.

10. The telescoping two-wheel hydraulic morrow bit of claim 9, wherein: The rack body comprises a top plate (2) and a vertical plate (3), a connecting square head (1) is arranged on the upper end of the top plate (2), two vertical plates (3) are symmetrically arranged on the lower end of the top plate (2), and the two vertical plates (3) are connected through a sealing plate, so that an internal hollow box structure is formed between the two vertical plates (3), the sealing plate and the top plate (2), and the box structure is used for accommodating hydraulic oil pipes. And / or, the digging walking assembly for driving the digging assembly to rotate comprises a hydraulic motor (5) and a speed reducer (7) connected with the hydraulic motor (5); a mounting cylinder (4) is arranged on the two vertical plates (3) along the horizontal direction, and a conversion mounting plate (6) is mounted on both ends of the mounting cylinder (4); the speed reducer (7) is connected with the mounting cylinder (4) through the conversion mounting plate (6), and the digging assembly is connected with the output end of the speed reducer (7). And / or, the digging assembly and the extended digging assembly each comprise a digging wheel (8) and a digging tooth (9), a plurality of digging teeth (9) are arranged on the digging wheel (8); a first connecting plate (10) is arranged on one end of the digging wheel (8) of the digging assembly close to the extended digging assembly, a plurality of first connecting holes are arranged on the first connecting plate (10); a second connecting plate (22) is arranged on one end of the digging wheel (8) of the extended digging assembly close to the digging assembly, a plurality of second connecting holes are arranged on the second connecting plate (22), and the second connecting holes correspond to the first connecting holes.

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