A slag removal device and slag removal method for building pile foundation hole bottom

Abstract

The invention relates to a bottom slag discharge device and a slag discharge method for a building pile foundation hole, belonging to the technical field of building construction, wherein a fixed plate is detachably connected between a plurality of vertical ribs, a first collecting barrel is arranged on the top of the fixed plate, a second collecting barrel is arranged below the fixed plate, a first scraper is slidably provided in a first feeding hole on the outer wall of the second collecting barrel, a second scraper with an inclined setting is fixedly provided on the inner wall of one side of the second feeding hole at the bottom of the second collecting barrel, a sleeve rod is slidably sleeved on the outer wall of a rotating shaft at the top of the fixed plate, the sleeve rod is fixedly arranged on the bottom wall of the second collecting barrel, an output end of a motor at the top of the fixed plate is fixedly connected to the rotating shaft, and is used to drive the second collecting barrel to rotate and collect slag; a fixing mechanism is used to fix the fixed plate between a plurality of vertical ribs, and transmit power through the rotating shaft; the invention solves the problems that the existing mud wall protection drilling sediment processing device for building pile foundation is easy to disturb the hole wall, the drilling sediment is not cleaned thoroughly, and the sediment cleaning effect is not good when in use.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and relates to a slag discharge device and a slag discharge method at the bottom of a building pile foundation hole. Background Art

[0002] Bored cast-in-place pile technology is a common method of foundation piling in construction. Cast-in-place piles are widely used in various foundation projects because of their large bearing capacity, good stability, small settlement and little influence by construction water level or groundwater level.

[0003] When bored cast-in-place piles are used for the construction of pile foundation projects, if mud wall protection is adopted, after the hole is formed, during the placement of the steel cage, the suspended particulate matter in the mud in the hole will partially settle at the bottom of the hole under the action of its own weight. At this time, the bottom of the hole needs to be cleaned for the second time through a sediment treatment device.

[0004] At present, it is common to use a drilling sediment treatment device to perform secondary cleaning of the sediment in the hole. The existing mud wall drilling sediment treatment device for building pile foundation has certain disadvantages when used, namely 1. During the use of some existing mud wall drilling sediment treatment devices, the sediment at the bottom of the hole is blown by gas, and the blown gas is easy to disturb the hole wall; 2. During the lowering process of some existing mud wall drilling sediment treatment devices, it is easy to disturb the hole wall. In addition, there is a problem that the drilling sediment is not cleaned thoroughly and the sediment cleaning effect is not good. Summary of the invention

[0005] In view of this, the present invention provides a slag discharge device and a slag discharge method at the bottom of a pile foundation hole in order to solve the problems that the above-mentioned existing mud wall protection drilling sediment treatment device for building pile foundation is easy to disturb the hole wall, the drilling sediment is not cleaned thoroughly, and the sediment cleaning effect is poor.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A slag discharge device at the bottom of a pile foundation hole, comprising a steel cage arranged in a foundation, the steel cage comprising a plurality of vertical bars and stirrups, the stirrups being fixed and wound around the inner sides of the plurality of vertical bars;

[0008] The fixing plate is detachably connected between multiple vertical bars, and its diameter is smaller than the inner diameter of the stirrups to avoid collision with the stirrups when it is lifted out;

[0009] A first collecting cylinder is arranged on the top of the fixed plate and is used to collect the debris falling from above. The diameter of the first collecting cylinder can be changed, and the maximum diameter corresponds to the winding size;

[0010] The second collecting barrel is arranged below the fixed plate, at least two first feeding holes are provided on the outer wall of the second collecting barrel, a first scraper is slidably provided in the first feeding hole, and the first scraper can automatically extend after being lowered into place, a second feeding hole is provided at the bottom of the second collecting barrel, a second scraper with an inclined setting is fixedly provided on the inner wall of one side of the second feeding hole, a rotating shaft is rotatably provided through the top of the fixed plate, a sleeve rod is slidably sleeved on the outer wall of the rotating shaft, and the sleeve rod is fixedly provided on the bottom wall of the second collecting barrel, a motor is fixedly provided on the top of the fixed plate, and the output end of the motor is fixedly connected to the rotating shaft, so as to drive the second collecting barrel to rotate and collect the debris;

[0011] The fixing mechanism is arranged on the fixing plate and is used for fixing the fixing plate between a plurality of vertical ribs and transmitting power through the rotating shaft.

[0012] Furthermore, the outer wall of the rotating shaft is provided with multiple fixing rings, the outer wall of the fixing ring and one side of the first scraper are rotatably provided with the same connecting rod, the outer wall of the sleeve rod is provided with a spring, the two ends of the spring are respectively fixedly connected to the bottom of the fixing ring and the bottom wall of the second collecting cylinder. After descending, the rotating shaft is driven downward by the gravity of the steel cage, which can drive the first scraper to extend, and conversely the first scraper can be retracted under the action of the spring.

[0013] Furthermore, a plurality of sliding rods are slidably provided on the inner wall of one side of the first feed hole, and the plurality of sliding rods are fixedly connected to the corresponding first scraper plates for guiding and strengthening the first scraper plates.

[0014] Furthermore, a limiting groove is provided on the bottom wall of the second collecting cylinder, and the first scraper is slidably arranged in the limiting groove to further guide the first scraper.

[0015] Furthermore, the fixing mechanism includes a plurality of rectangular holes opened on the top of the fixing plate, and the number of the rectangular holes corresponds to the vertical ribs, a second sliding block is slidably arranged in the rectangular holes, a first sliding block is fixedly arranged on the top of the second sliding block, an insertion hole is opened at one end of the first sliding block, an extension block is slidably arranged in the insertion hole, the extension block is fixedly connected to the corresponding vertical ribs, and the plurality of second sliding blocks are all connected to the rotating shaft through a transmission member.

[0016] The transmission part includes a rotating disk sleeved on the outer wall of the rotating shaft, the rotating disk is rotatably arranged at the bottom of the fixed disk, a plurality of waist-shaped holes corresponding to the rectangular holes are opened on the top of the rotating disk, a sliding column is slidably arranged in the waist-shaped hole, and the top of the sliding column is fixedly connected with the corresponding second sliding block, an arc-shaped hole is opened on the top of the rotating disk, an arc-shaped block is slidably arranged in the arc-shaped hole, the top of the arc-shaped block is fixedly connected with the fixed disk, a mounting seat is fixedly arranged on the outer side of the arc-shaped block, an electromagnetic clutch is fixedly arranged on the mounting seat, the input end of the electromagnetic clutch and the outer wall of the rotating shaft are fixedly sleeved with synchronous wheels, the outer walls of the two synchronous wheels are transmission-connected with the same synchronous belt, an inner gear ring is fixedly arranged on the bottom of the rotating disk, and a gear meshing with the inner gear ring is fixedly sleeved on the output end of the electromagnetic clutch for driving the rotating disk to rotate, the outer wall of the rotating shaft is sleeved with a second casing, and the top of the second casing is fixedly connected with the rotating disk for protecting the electromagnetic clutch.

[0017] Furthermore, the first collecting cylinder includes a connecting plate fixedly arranged on the plurality of first sliding blocks, and a connecting cloth is fixedly arranged between two adjacent connecting plates.

[0018] Furthermore, a first protective tube is provided on the top of the fixed plate, and the motor is located in the first protective tube for protecting the motor. A plurality of support rods are fixedly provided on the outer wall of the first protective tube, and the outer ends of the plurality of support rods are fixedly provided with the same guide tube for guiding the debris, and the bottom end of the guide tube corresponds to the retracted first collecting tube.

[0019] Furthermore, a plurality of guide rods are provided on the top of the guide cylinder, and an inclined portion is provided on the guide rods for use in conjunction with the stirrups to guide the lifting and lowering of the device.

[0020] A slag discharge method for a slag discharge device at the bottom of a pile foundation hole, comprising the following steps:

[0021] S1, pass the steel wire rope of the lifting equipment through the steel cage and connect it with the first casing, then cooperate with other lifting equipment to lift the steel cage and the first casing at the same time, and control the position of the first casing, then start the motor and the electromagnetic clutch to drive the rotating disk to rotate, drive the first sliding block to move outward, so that the socket on the first sliding block is correspondingly plugged with the extension block on the vertical reinforcement, the fixed disk is fixedly connected with the steel cage, and finally put into the foundation;

[0022] S2. During the insertion process, the debris generated by the friction between the steel cage and the foundation will fall on the top of the fixed plate and be collected;

[0023] S3. After being placed at the bottom, the steel cage will drive the rotating shaft to move downward in the sleeve rod by gravity, and the downward movement can drive the first scraper to extend, and at the same time start the motor to drive the second collection barrel to rotate. During the rotation process, the two first scrapers and the second scraper can collect the debris into the second collection barrel;

[0024] S4, after the collection is completed, the motor is started to rotate in the reverse direction and the electromagnetic clutch drives the rotating disk to rotate in the reverse direction to release the fixation of the fixed disk and the steel cage;

[0025] S5. Put the steel cage into place by hoisting equipment, and drive the first casing to move upward and hoist it out.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention discloses a bottom slag discharge device for building pile foundation holes. Through the coordinated action of a motor and an electromagnetic clutch, the rotation of a rotating disk can be accurately controlled so that an extension block is inserted into a socket, thereby realizing a fast and stable connection between a steel cage and a fixed disk. At the same time, the sliding block drives the connecting plate and the connecting cloth to be tightened to form an effective sealing structure, thereby effectively preventing slag from falling to the bottom of the hole during the lowering of the steel cage, thereby ensuring the cleanliness of the construction environment and the smooth progress of subsequent projects.

[0028] 2. The present invention discloses a device for discharging slag at the bottom of a pile foundation hole. During the lowering and fixing process of the steel cage, the slag is guided by a guide cylinder and directly falls on the top of a fixed plate, thereby realizing the centralized collection of the slag and avoiding the problem of scattered slag that is difficult to clean in traditional methods. In addition, by utilizing the cooperation of the second collecting cylinder, the first scraper and the second scraper, after the steel cage is in place, the residual slag at the bottom of the hole is automatically collected by a motor drive, thereby further improving the construction efficiency and cleanliness.

[0029] 3. The present invention discloses a slag discharge device at the bottom of a pile foundation hole. When the slag is collected and released, the plurality of connecting plates can be driven to move closer to each other to squeeze the internal slag to prevent it from falling again. The rotating shaft and the first scraper can be automatically reset through the action of a spring without manual intervention, thereby improving the convenience and safety of operation.

[0030] 4. The present invention discloses a slag discharge device at the bottom of a pile foundation hole. During the lifting process, the ingenious design of the inclined portion and the stirrups ensures the smooth guidance of the device during the rising process, effectively preventing collision with other components in the steel cage, protecting the device itself and reducing potential safety hazards.

[0031] 5. The present invention discloses a slag discharge device at the bottom of a pile foundation hole. The slag discharge device is lowered along the inner wall of a steel cage by a steel wire rope of a hoisting device. After being lowered to the bottom of the pile foundation, the slag discharge device is fixed correspondingly to the extension block on the corresponding vertical reinforcement by a first sliding block in a fixing mechanism to scrape and collect the pile foundation hole wall. The slag discharge device is also lifted out from the inner wall of the steel cage by a hoisting device when being taken out, thereby solving the problems of the existing mud wall protection drilling sediment treatment device for pile foundations being easy to disturb the hole wall when being lowered for use, and the drilling sediment is not cleaned thoroughly, and the sediment cleaning effect is not good. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 A schematic diagram of the three-dimensional structure of a slag discharge device at the bottom of a pile foundation hole proposed by the present invention;

[0034] Figure 2 A schematic diagram of the steel cage structure of a slag discharge device at the bottom of a pile foundation hole proposed by the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of a collecting cylinder and a fixed plate of a bottom slag discharge device for a building pile foundation hole proposed by the present invention;

[0036] Figure 4 This is a schematic diagram of the connection structure between the first collecting cylinder and the fixed plate of a bottom slag discharge device for a pile foundation hole proposed by the present invention;

[0037] Figure 5 This is a schematic diagram of the connection structure of the sliding block, the fixed plate and the rotating plate of a bottom slag discharge device for a pile foundation hole proposed by the present invention;

[0038] Figure 6 This is a schematic diagram of the transmission structure of the rotating shaft and rotating disk of a bottom slag discharge device for a pile foundation hole proposed by the present invention;

[0039] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0040] Figure 8 This is a schematic diagram of the structure of a second collecting cylinder of a slag discharge device at the bottom of a pile foundation hole proposed by the present invention;

[0041] Fig. 9 for Figure 8 Schematic diagram of the structure from another perspective.

[0042] In the figure: 1, foundation; 2, steel cage; 3, guide cylinder; 4, first collecting cylinder; 5, second collecting cylinder; 6, vertical reinforcement; 7, stirrups; 8, extension block; 9, guide rod; 10, inclined portion; 11, fixed plate; 12, first sliding block; 13, plug hole; 14, rotating plate; 15, support rod; 16, first casing; 17, motor; 18, rectangular hole; 19, connecting plate; 20, connecting cloth; 21, rotating shaft; 22, waist-shaped hole; 23 , the second sliding block; 24, the sliding column; 25, the second casing; 26, the fixing ring; 27, the connecting rod; 28, the inner gear ring; 29, the arc hole; 30, the arc block; 31, the mounting seat; 32, the electromagnetic clutch; 33, the gear; 34, the synchronous wheel; 35, the synchronous belt; 36, the first feed hole; 37, the sliding rod; 38, the first scraper; 39, the spring; 40, the sleeve rod; 41, the limit groove; 42, the second feed hole; 43, the second scraper. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0044] Embodiment 1

[0045] A steel cage 2 is installed in the foundation 1. The steel cage 2 is composed of a plurality of vertical bars 6 and stirrups 7. The stirrups 7 are tightly wound around the inner sides of the plurality of vertical bars 6 to form a stable structure. Figure 1-9 In the illustrated construction pile foundation hole bottom slag removal device, a fixed plate 11 is detachably connected between a plurality of vertical bars 6. The diameter of the fixed plate 11 is designed to be smaller than the inner diameter of the stirrup 7 to ensure that the fixed plate 11 and its connecting parts can be smoothly raised without conflicting with the stirrup 7 in subsequent operations.

[0046] A first collecting barrel 4 is installed on the top of the fixed plate 11 to collect the debris dropped during the construction process above. The first collecting barrel 4 is designed to have an adjustable diameter so that its diameter can be adjusted between the maximum diameter matching the size of the steel cage hoop winding and the minimum diameter to meet the needs of steel cages of different diameters and debris collection.

[0047] A second collecting barrel 5 is arranged below the fixed plate 11, and at least two first material inlet holes 36 are provided on its outer wall. A first scraper 38 is slidably installed in each first material inlet hole 36, and the first scraper 38 is connected to the fixed ring 26 on the rotating shaft 21 through a connecting rod 27. A sleeve rod 40 is fixedly arranged on the bottom wall of the second collecting barrel 5, and is slidably sleeved on the rotating shaft 21. A spring 39 is sleeved on the outer wall of the sleeve rod 40, and the two ends of the spring 39 are respectively fixedly connected to the bottom of the fixed ring 26 and the bottom wall of the second collecting barrel 5. When the second collecting barrel 5 is lowered into place, due to the gravity of the steel cage 2, the rotating shaft 21 moves downward accordingly, and the first scraper 38 is extended through the connecting rod 27 to realize automatic scraping. Conversely, during the rising process, the first scraper 38 retracts under the action of the spring 39.

[0048] Three sliding rods 37 are slidably provided on the inner wall of one side of the first material feeding hole 36. The sliding rods 37 are fixedly connected to the corresponding first scrapers 38 to guide and strengthen the first scrapers 38. A limiting groove 41 is provided on the bottom wall of the second collecting cylinder 5. The first scrapers 38 are slidably provided in the limiting groove 41 to further guide the first scrapers 38.

[0049] A second material inlet 42 is provided at the bottom of the second collecting cylinder 5, and a second scraper 43 with an inclined setting is fixedly provided on one inner wall thereof for further scraping off and guiding the slag to be discharged.

[0050] A motor 17 is installed on the top of the fixed plate 11. The output end of the motor 17 is fixedly connected to the rotating shaft 21. The rotating shaft 21 is driven to rotate by the motor 17, thereby driving the second collecting barrel 5 to rotate, thereby collecting and scraping the debris.

[0051] The fixing mechanism is provided on the fixing plate 11 by means of a bolt connection or a snap-fit ​​structure, for firmly fixing the fixing plate 11 between the plurality of vertical ribs 6 and ensuring that power can be transmitted smoothly.

[0052] The fixing mechanism includes a corresponding number of rectangular holes 18 formed on the top of the fixing plate 11 according to the number and position of the vertical ribs 6. A second sliding block 23 is slidably arranged in each rectangular hole 18. The top of the second sliding block 23 is fixedly connected to the first sliding block 12 to form a connection structure that slides up and down.

[0053] One end of the first sliding block 12 is provided with a socket 13, and an extension block 8 is slidably arranged in the socket 13. The other end of the extension block 8 is connected to the corresponding vertical rib 6 by welding or other fixing methods. In this way, when the first sliding block 12 and the second sliding block 23 slide in the rectangular hole 18, the extension block 8 on the vertical rib 6 can be driven to move together, so as to achieve a stable connection between the fixing plate 11 and the steel cage 2.

[0054] At the bottom of the fixed disk 11, a rotating disk 14 is installed which is sleeved on the outer wall of the rotating shaft 21. The rotating disk 14 can rotate freely relative to the fixed disk 11.

[0055] A waist-shaped hole 22 corresponding to the rectangular hole 18 is formed on the top of the rotating disk 14, and a sliding post 24 is slidably arranged in the waist-shaped hole 22. The top of the sliding post 24 is fixedly connected to the second sliding block 23, so that the rotation of the rotating disk 14 can drive the second sliding block 23 to slide in the rectangular hole 18. When the rotating disk 14 is rotated, the first sliding block 12 can be driven to move through the cooperation between the waist-shaped hole 22 and the sliding post 24 and the rectangular hole 18 and the second sliding block 23.

[0056] An arc hole 29 is also provided at the top of the rotating disk 14, and an arc block 30 is slidably arranged in the arc hole 29. The top of the arc block 30 is fixedly connected to the fixed disk 11 to limit the rotation range of the rotating disk 14 and increase the structural stability.

[0057] A mounting seat 31 is installed on the outer side of the arc block 30, and an electromagnetic clutch 32 is fixed on the mounting seat 31. Synchronous wheels 34 are fixedly sleeved on the input end of the electromagnetic clutch 32 and the outer wall of the rotating shaft 21, and the two synchronous wheels 34 are connected by a synchronous belt 35.

[0058] The bottom of the rotating disk 14 is fixedly provided with an inner gear ring 28, and the output end of the electromagnetic clutch 32 is fixedly provided with a gear 33 meshing with the inner gear ring 28. When the electromagnetic clutch 32 is working, it can drive the gear 33 to rotate, and then drive the rotating disk 14 to rotate through the inner gear ring 28.

[0059] In order to protect the electromagnetic clutch 32 , a second protective sleeve 25 is sleeved on the outer wall of the rotating shaft 21 , and the top of the second protective sleeve 25 is fixedly connected to the rotating disk 14 to form a protective structure for the electromagnetic clutch 32 .

[0060] Embodiment 2

[0061] To adjust the size of the first collecting barrel 4, the first collecting barrel 4 includes a connecting plate 19 fixedly arranged on the top of each first sliding block 12. The shape and size of the connecting plate 19 are designed according to the layout and required strength of the first sliding block 12 to ensure that it can be firmly connected to the sliding block.

[0062] Next, a high-strength, wear-resistant connecting cloth 20 is used to fix the two adjacent connecting plates 19. The material of the connecting cloth 20 should have good elasticity and wear resistance to adapt to the deformation of the first collecting barrel 4 during the expansion and contraction process and effectively collect the slag at the bottom of the hole. The first collecting barrel 4 is composed of a plurality of connecting plates 19 and connecting cloth 20 to form a retractable cylindrical structure, which can expand or contract according to the amount of slag at the bottom of the hole, thereby improving the slag discharge efficiency.

[0063] A first protective tube 16 is arranged on the top of the fixing plate 11, and the diameter and height of the first protective tube 16 are designed according to the size and protection requirements of the motor 17. The motor 17 is installed inside the first protective tube 16 and is firmly connected by bolts or other fixing methods to ensure the stability and safety of the motor 17 during operation.

[0064] A plurality of support rods 15 are fixedly arranged on the outer wall of the first casing 16. The number and distribution of the support rods 15 are designed according to the size and shape of the guide cylinder 3 to ensure the stability and balance of the guide cylinder 3. The outer ends of all the support rods 15 are fixedly connected to the same guide cylinder 3, and the bottom end of the guide cylinder 3 corresponds to the retracted first collecting cylinder 4, so as to guide and collect the slag into the first collecting cylinder 4.

[0065] Eight guide rods 9 are evenly arranged on the top of the guide cylinder 3, and the number and position of the guide rods 9 are designed according to the layout of the stirrups 7. An inclined portion 10 is arranged on the guide rod 9 to cooperate with the stirrups 7, and the shape and size of the inclined portion 10 are designed according to the spacing and diameter of the stirrups 7 to ensure that during the lifting process of the device, the guide rod 9 can smoothly pass through the stirrups 7 and guide the device to prevent it from deflecting or shaking.

[0066] In the present application, the steel wire rope of the lifting equipment is first passed through the steel cage 2 and connected to the first casing 16, and then the steel cage 2 and the first casing 16 are lifted at the same time in cooperation with other lifting equipment, and the position of the first casing 16 is controlled until the first sliding block 12 corresponds to the extension block 8 on the corresponding vertical rib 6, and then the motor 17 and the electromagnetic clutch 32 are started. The rotation of the motor 17 can drive the rotating shaft 21 to rotate. The rotation of the rotating shaft 21 can drive the input end of the electromagnetic clutch 32 to rotate through two synchronous wheels 34 and a synchronous belt 35, and can drive the gear 33 to rotate through the output end. The rotation of the gear 33 can drive the inner gear ring 28 to rotate.

[0067] The rotation of the inner gear ring 28 can drive the rotating disk 14 to rotate. During the rotation of the rotating disk 14, the arc block 30 will move in the arc hole 29. At the same time, when the rotating disk 14 rotates, it can drive the sliding column 24 to move in the waist hole 22, and drive the second sliding block 23 to move in the rectangular hole 18, so that the first sliding block 12 can be driven to move outward, so that the plug hole 13 on the first sliding block 12 is correspondingly plugged with the extension block 8 on the vertical reinforcement 6. At this time, the fixed disk 11 is fixedly connected to the steel cage 2. At the same time, the movement of the first sliding block 12 can drive the connecting plate 19 to move outward, and tighten the connecting cloth 20, so that a seal is formed between the connecting plate 19, the connecting cloth 20 and the fixed disk 11, and finally put into the foundation 1;

[0068] During the process of placing the steel cage 2, the debris generated by the friction between the steel cage 2 and the foundation 1 will fall downward, and can be guided by the guide cylinder 3 during the falling process, and fall on the top of the fixed plate 11 for collection; after the steel cage 2 is placed at the bottom, the second collecting cylinder 5 contacts the bottom wall of the foundation 1, and then continues to be lowered, the steel cage 2 will drive the fixed plate 11 to move downward by gravity, and the downward movement of the fixed plate 11 can drive the rotating shaft 21 to move downward in the sleeve rod 40 and compress the spring 39, and the downward movement can drive the two first scrapers 38 to extend through the two connecting rods 27, so that the first scrapers 38 contact the hole wall, and at the same time start the motor 17 to drive the second collecting cylinder 5 to rotate, and during the rotation process, the debris can be collected into the second collecting cylinder 5 by the two first scrapers 38 and the second scraper 43;

[0069] After the collection is completed, the starter motor 17 rotates in the reverse direction and the electromagnetic clutch 32 drives the rotating disk 14 to rotate in the reverse direction to release the fixing disk 11 and the steel cage 2;

[0070] Finally, the steel cage 2 is put into place by the lifting equipment, and the first casing 16 is driven to move upward. At this time, the rotating shaft 21 can be reset and moved under the action of the spring 39, and the first scraper 38 is driven to reset and retract through the connecting rod 27. In the process of pulling upward, the device can be guided by the cooperation of multiple inclined parts 10 and stirrups 7 to avoid conflict between the device and the stirrups 7, so that the debris at the bottom of the pile hole can be taken out.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A bottom slag discharge device for a pile foundation, wherein a steel cage (2) in a foundation (1) is composed of a plurality of vertical bars (6) and stirrups (7), wherein the stirrups (7) are fixed and wound around the inner sides of the plurality of vertical bars (6), characterized in that: include: A fixing plate (11), the fixing plate (11) being detachably connected between the plurality of vertical bars (6) and having a diameter smaller than the inner diameter of the stirrups (7) to avoid collision with the stirrups (7) when being lifted out; A first collecting cylinder (4), the first collecting cylinder (4) being arranged on the top of the fixed plate (11) and being used to collect debris dropped from above, and the diameter of the first collecting cylinder (4) being variable, with the maximum diameter corresponding to the inner diameter of the steel cage (2); A second collecting barrel (5), wherein the second collecting barrel (5) is arranged below the fixed plate (11), at least two first material inlet holes (36) are provided on the outer wall of the second collecting barrel (5), a first scraper (38) is slidably provided in the first material inlet holes (36), and the first scraper (38) can automatically extend after being lowered into place, a second material inlet hole (42) is provided at the bottom of the second collecting barrel (5), a second scraper (43) is fixedly provided at one side of the inner wall of the second material inlet hole (42), a rotating shaft (21) is rotatably provided through the top of the fixed plate (11), a sleeve rod (40) is slidably sleeved on the outer wall of the rotating shaft (21), and the sleeve rod (40) is fixedly provided on the bottom wall of the second collecting barrel (5), a motor (17) is fixedly provided on the top of the fixed plate (11), and the output end of the motor (17) is fixedly connected to the rotating shaft (21) for driving the second collecting barrel (5) to rotate and collect debris; A fixing mechanism, disposed on the fixing plate (11), used for fixing the fixing plate (11) between the plurality of vertical ribs (6) and transmitting power via the rotating shaft (21); The outer wall of the rotating shaft (21) is sleeved with a plurality of fixing rings (26), the outer wall of the fixing ring (26) and one side of the first scraper (38) are rotatably provided with a connecting rod (27), the outer wall of the sleeve rod (40) is sleeved with a spring (39), the two ends of the spring (39) are respectively fixedly connected to the bottom of the fixing ring (26) and the bottom wall of the second collecting cylinder (5), after descending, the rotating shaft (21) is driven downward by the gravity of the steel cage (2), driving the first scraper (38) to extend, and vice versa, the first scraper (38) is retracted under the action of the spring (39); A plurality of sliding rods (37) are slidably provided on an inner wall of one side of the first material feeding hole (36), and the plurality of sliding rods (37) are fixedly connected to corresponding first scrapers (38) for guiding the first scrapers (38) and strengthening the first scrapers (38); The fixing mechanism comprises a plurality of rectangular holes (18) formed on the top of the fixing plate (11), and the number of the rectangular holes (18) corresponds to the vertical ribs (6); a second sliding block (23) is slidably arranged in the rectangular holes (18); a first sliding block (12) is fixedly arranged on the top of the second sliding block (23); a plug hole (13) is formed at one end of the first sliding block (12); the plug hole (13) is slidably connected to an extension block (8) fixedly connected to the end of a corresponding vertical rib (6); and the plurality of second sliding blocks (23) are all connected to the rotating shaft (21) via a transmission member; The transmission member comprises a rotating disk (14) sleeved on the outer wall of the rotating shaft (21); the rotating disk (14) is rotatably arranged on the bottom of the fixed disk (11); a plurality of waist-shaped holes (22) corresponding to the rectangular holes (18) are opened on the top of the rotating disk (14); a sliding column (24) is slidably arranged in the waist-shaped holes (22); the top of the sliding column (24) is fixedly connected to the corresponding second sliding block (23); an arc-shaped hole (29) is opened on the top of the rotating disk (14); an arc-shaped block (30) is slidably arranged in the arc-shaped hole (29); the top of the arc-shaped block (30) is fixedly connected to the fixed disk (11); a mounting seat (31) is fixedly arranged on the outer side of the arc-shaped block (30); An electromagnetic clutch (32) is fixedly provided on the mounting seat (31); a synchronous wheel (34) is fixedly sleeved on the input end of the electromagnetic clutch (32) and the outer wall of the rotating shaft (21); the outer walls of the two synchronous wheels (34) are transmission-connected with a same synchronous belt (35); an inner gear ring (28) is fixedly provided on the bottom of the rotating disk (14); a gear (33) meshing with the inner gear ring (28) is fixedly sleeved on the output end of the electromagnetic clutch (32) for driving the rotating disk (14) to rotate; a second protective sleeve (25) is sleeved on the outer wall of the rotating shaft (21); the top of the second protective sleeve (25) is fixedly connected to the rotating disk (14) for protecting the electromagnetic clutch (32); The first collecting cylinder (4) comprises a connecting plate (19) fixedly arranged on a plurality of first sliding blocks (12), and a connecting cloth (20) is fixedly arranged between two adjacent connecting plates (19); A first protective tube (16) is provided on the top of the fixed plate (11), and the motor (17) is located in the first protective tube (16) for protecting the motor (17). A plurality of support rods (15) are fixedly provided on the outer wall of the first protective tube (16), and a guide tube (3) for guiding the slag is fixedly provided on the outer ends of the plurality of support rods (15), and the bottom end of the guide tube (3) corresponds to the retracted first collecting tube (4).

2. A slag removal device at the bottom of a pile foundation hole according to claim 1, characterized in that: The bottom wall of the second collecting cylinder (5) is provided with a limiting groove (41), and the first scraper (38) is slidably arranged in the limiting groove (41) for further guiding the first scraper (38).

3. A slag removal device at the bottom of a pile foundation hole according to claim 1, characterized in that: A plurality of guide rods (9) are provided at the top of the guide cylinder (3), and an inclined portion (10) is provided on the guide rod (9) for use with the stirrup (7) to guide the lifting and lowering of the device.

4. A slag discharge method for a slag discharge device at the bottom of a pile foundation hole according to claim 1, characterized in that: The following steps are involved: S1, passing the steel wire rope of the lifting equipment through the steel cage (2) and connecting it to the first casing (16), then cooperating with other lifting equipment to lift the steel cage (2) and the first casing (16) at the same time, and controlling the position of the first casing (16), then starting the motor (17) and the electromagnetic clutch (32) to drive the rotating disk (14) to rotate, drive the first sliding block (12) to move outward, so that the insertion hole (13) on the first sliding block (12) is correspondingly plugged into the extension block (8) on the vertical reinforcement (6), and the fixed disk (11) is fixedly connected to the steel cage (2), and finally placed into the foundation (1); S2. During the placement of the steel cage (2), the debris generated by the friction with the foundation (1) will fall on the top of the fixed plate (11) and be collected; S3, after the steel cage (2) is placed at the bottom, the steel cage (2) will drive the rotating shaft (21) to move downward in the sleeve rod (40) by gravity, and the downward movement can drive the first scraper (38) to extend, and at the same time, the motor (17) is started to drive the second collection barrel (5) to rotate. During the rotation process, the two first scrapers (38) and the second scraper (43) can collect the debris into the second collection barrel (5); S4, after the collection is completed, the motor (17) is started to rotate in the reverse direction and the electromagnetic clutch (32) drives the rotating disk (14) to rotate in the reverse direction to release the fixing disk (11) and the steel cage (2); S5. The steel cage (2) is then placed in place by means of a lifting device, and the first casing (16) is driven to move upward and be lifted out.

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