Soft soil foundation cast-in-place pile splicing structure

Abstract

The utility model belongs to the field of cast-in-place piles, particularly relates to a pile splicing structure for cast-in-place piles of a soft soil foundation, and provides the following scheme aiming at the problems that an existing steel casing is easy to move and poor in stability: the pile splicing structure comprises a pile splicing sleeve; the extension cylinder is clamped at the top end of the pile splicing sleeve; the transmission box is in bolted connection with the bottom end of the surface of the pile splicing sleeve; the clamping assembly comprises a worm, worm wheels, transmission rods, racks, pinions and clamping claws, the number of the worm wheels, the number of the transmission rods, the number of the racks, the number of the pinions and the number of the clamping claws are all two, teeth of the two worm wheels are all meshed with the surface of the worm, the tops of the worm wheels are hinged to one ends of the transmission rods, and through transmission of the structure, the clamping claws can be driven to rotate; the clamping claws can clamp an original reinforced concrete cast-in-place pile, the pile splicing sleeve is fixed to the original reinforced concrete cast-in-place pile, and the pile splicing sleeve and the extension cylinder can be connected and fixed through the clamping strips and the clamping blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of cast-in-place piles, in particular to a cast-in-place pile connection structure for soft soil foundations. Background Art

[0002] During the construction and use of cast-in-place piles on soft soil foundations, a pile connection structure is required to extend the length of the cast-in-place piles. Chinese patent document publication number CN116733048A discloses a pile connection structure for cast-in-place piles on soft soil foundations and a construction method thereof.

[0003] However, the above technical solution simply sleeves the bottom steel casing on the original reinforced concrete pile, and the connectivity between the two is poor. The steel casing is easy to move on the original reinforced concrete pile, which easily affects the pouring of concrete. Moreover, the bottom steel casing and the top steel casing are just sleeved on each other, which limits the stability. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that the steel casing is easy to move but has poor stability, and proposes a cast-in-place pile connection structure for soft soil foundation.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A soft soil foundation cast-in-place pile connection structure, comprising

[0007] Pile sleeve;

[0008] An extension tube, which is clamped on the top end of the pile sleeve;

[0009] A transmission box, the transmission box being bolted to the bottom end of the pile sleeve surface;

[0010] The clamping assembly includes a worm, a worm wheel, a transmission rod, a rack, a pinion and a clamping claw. The worm wheel, the transmission rod, the rack, the pinion and the clamping claw are each provided with two, the teeth of the two worm wheels are meshed with the surface of the worm, the top of the worm wheel is hinged to one end of the transmission rod, the transmission rod is hinged to the rack, the teeth of the rack are meshed with the teeth of the pinion, and the shaft at the bottom of the pinion is keyed to the hole of the clamping claw;

[0011] There are two clamping assemblies, each comprising a clamping strip and a clamping block, wherein the notch of the clamping strip is clamped with the surface of the clamping block;

[0012] The lifting mechanism is connected to the clamping strip. The lifting mechanism is used to drive the clamping strip to rise and fall. Through the transmission of the structure, the clamping claw can be driven to rotate. The clamping claw can clamp the original reinforced concrete cast-in-place pile and fix the pile sleeve on the original reinforced concrete cast-in-place pile. The pile sleeve and the extension tube can be connected and fixed through the clamping strip and the clamping block.

[0013] As a preferred solution of the present utility model, the lifting mechanism includes a large bevel gear, a small bevel gear and a screw rod. The teeth of the large bevel gear are meshed with the teeth of the small bevel gear. The axis of the bottom of the small bevel gear is keyed to the top of the screw rod. The bottom end of the screw rod surface is threadedly connected to the screw hole at the top of the card strip, driving the large bevel gear to rotate. The large bevel gear can drive the small bevel gear to rotate. The sizes of the large bevel gear and the small bevel gear can produce an acceleration effect on the small bevel gear. The small bevel gear can drive the screw rod to rotate, and the screw rod can use the thread to drive the card strip to move upward.

[0014] As a preferred solution of the present invention, the axis center of the large bevel gear is rotatably connected to the surface of the extension tube, the top end of the screw rod is rotatably connected to the surface of the extension tube, and the large bevel gear is rotatably arranged with the extension tube through a bearing to ensure the smooth rotation of the large bevel gear. A handle is provided on the surface of the large bevel gear for driving the large bevel gear to rotate, and the screw rod is rotatably arranged with the extension tube through a bearing.

[0015] As a preferred solution of the present invention, both ends of the worm are rotatably socketed with the holes inside the transmission box, the axis of the worm wheel is rotatably connected with the inside of the transmission box, the worm is rotatably arranged with the transmission box through a bearing to ensure the stability of the worm rotation, and the worm wheel is rotatably arranged with the transmission box through a bearing, and the two worm wheels are respectively located on both sides of the worm.

[0016] As a preferred solution of the present invention, the bottom of the rack is slidably connected to the inside of the transmission box, the axis of the pinion is rotatably sleeved with the hole of the transmission box, the inner side of the clamping claw is bonded with an anti-slip pad, the rack is slidably set with the transmission box through a slide rail to guide the rack, the pinion is rotatably set with the transmission box through a bearing, and the anti-slip pad of the clamping claw is used to increase the friction between the clamping claw and the original cast-in-place pile.

[0017] As a preferred solution of the present invention, the clamping strip is slidably connected to the extension tube, the clamping block is bolted to the pile sleeve, and the clamping strip is slidably arranged with the extension tube through a slide rail to guide the clamping strip. Beneficial effects

[0018] 1. The worm can drive the two worm wheels to rotate, the worm wheels can drive the transmission rod to rotate, the transmission rod can drive the rack to move, the rack can drive the pinion to rotate, the pinion can drive the clamping claw to rotate, and the clamping claw can clamp on the original reinforced concrete pile;

[0019] 2. The lifting mechanism can drive the card strip to move up and down, and the card strip can drive the card block. The combination of the card strip and the card block can fix the pile sleeve and the extension tube;

[0020] In the utility model, the clamping claw can be driven to rotate through the transmission of the structure, and the clamping claw can clamp the original reinforced concrete cast-in-place pile, fix the pile connecting sleeve on the original reinforced concrete cast-in-place pile, and connect and fix the pile connecting sleeve and the extension tube through the clamping strip and the clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0022] Figure 2 A three-dimensional diagram of the clamping claw of the present invention;

[0023] Figure 3 This is a three-dimensional diagram of the card strip of the present utility model;

[0024] Figure 4 It is a three-dimensional diagram of the extension tube of the present utility model.

[0025] In the figure: 1. Pile sleeve; 2. Extension tube; 3. Transmission box; 4. Worm; 5. Worm wheel; 6. Transmission rod; 7. Rack; 8. Pinion; 9. Clamping claw; 10. Large bevel gear; 11. Small bevel gear; 12. Screw; 13. Clip strip; 14. Clip block; 15. Anti-slip pad. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0027] Reference Figure 1-Figure 4 , a soft soil foundation cast-in-place pile connection structure, including

[0028] Pile sleeve 1;

[0029] The extension tube 2 is clamped on the top end of the pile sleeve 1;

[0030] The transmission box 3 is bolted to the bottom end of the pile sleeve 1;

[0031] The clamping assembly includes a worm 4, a worm wheel 5, a transmission rod 6, a rack 7, a pinion 8 and a clamping claw 9. There are two worm wheels 5, two transmission rods 6, two racks 7, two pinion 8 and two clamping claws 9. The teeth of the two worm wheels 5 are engaged with the surface of the worm 4. The top of the worm wheel 5 is hinged to one end of the transmission rod 6. The transmission rod 6 is hinged to the rack 7. The teeth of the rack 7 are engaged with the teeth of the pinion 8. The shaft at the bottom of the pinion 8 is keyed to the hole of the clamping claw 9.

[0032] There are two clamping assemblies, each comprising a clamping strip 13 and a clamping block 14. The notch of the clamping strip 13 is clamped with the surface of the clamping block 14.

[0033] The lifting mechanism is connected to the clamping bar 13 and is used to drive the clamping bar 13 to move up and down.

[0034] By means of the above structure: through the transmission of the structure, the clamping claw 9 can be driven to rotate, the clamping claw 9 can clamp the original reinforced concrete pile, and the pile sleeve 1 can be fixed on the original reinforced concrete pile. The pile sleeve 1 and the extension tube 2 can be connected and fixed by the clamping strip 13 and the clamping block 14.

[0035] See also Figure 3 The lifting mechanism includes a large bevel gear 10, a small bevel gear 11 and a screw rod 12. The teeth of the large bevel gear 10 are meshed with the teeth of the small bevel gear 11. The axis at the bottom of the small bevel gear 11 is keyed to the top of the screw rod 12. The bottom end of the screw rod 12 is threadedly connected to the screw hole at the top of the clip 13, driving the large bevel gear 10 to rotate. The large bevel gear 10 can drive the small bevel gear 11 to rotate. The size of the large bevel gear 10 and the small bevel gear 11 can produce an acceleration effect on the small bevel gear 11. The small bevel gear 11 can drive the screw rod 12 to rotate, and the screw rod 12 can use the thread to drive the clip 13 to move upward.

[0036] See also Figure 3 The axis of the large bevel gear 10 is rotatably connected to the surface of the extension tube 2, and the top of the surface of the screw rod 12 is rotatably connected to the surface of the extension tube 2. The large bevel gear 10 is rotatably set with the extension tube 2 through the bearing to ensure the stability of the rotation of the large bevel gear 10. A handle is provided on the surface of the large bevel gear 10 for driving the large bevel gear 10 to rotate, and the screw rod 12 is rotatably set with the extension tube 2 through the bearing.

[0037] See also Figure 1 Both ends of the worm 4 are rotatably connected to the holes inside the transmission box 3, and the axis of the worm wheel 5 is rotatably connected to the inside of the transmission box 3. The worm 4 is rotatably arranged with the transmission box 3 through bearings to ensure the stability of the rotation of the worm 4. The worm wheel 5 is rotatably arranged with the transmission box 3 through bearings, and the two worm wheels 5 are respectively located on both sides of the worm 4.

[0038] See also Figure 2 The bottom of the rack 7 is slidably connected to the inside of the transmission box 3, the axis of the pinion 8 is rotatably sleeved with the hole of the transmission box 3, and the inner side of the clamping claw 9 is bonded with an anti-slip pad 15. The rack 7 is slidably set with the transmission box 3 through the slide rail to guide the rack 7. The pinion 8 is rotatably set with the transmission box 3 through the bearing. The anti-slip pad 15 of the clamping claw 9 is used to increase the friction between the clamping claw 9 and the original cast-in-place pile.

[0039] See also Figure 4The card strip 13 is slidably connected to the extension tube 2, the card block 14 is bolted to the pile sleeve 1, and the card strip 13 is slidably set with the extension tube 2 through a slide rail to guide the card strip 13. Example 2

[0040] The difference between this embodiment and embodiment one is that the worm 4, worm wheel 5 and transmission rod 6 are replaced by an electric push rod, which directly drives the rack 7 to move, reducing the structure. However, the electric push rod can only use a bidirectional telescopic electric push rod, which has poor stability. Therefore, this application prefers the worm 4, worm wheel 5 and transmission rod 6.

[0041] The pile connecting sleeve 1 and the extension tube 2 adopt the existing technology and can adopt the steel casing structure with patent application number 202311001068.7.

[0042] The operation steps of the utility model are as follows: the pile connecting sleeve 1 is put on the original cast-in-place pile, the front end key of the worm 4 is connected with a hand wheel, the hand wheel can drive the worm 4, the worm 4 can drive the two worm wheels 5 to rotate, the two worm wheels 5 rotate in opposite directions, the worm wheels 5 can drive the transmission rod 6 to rotate, the worm wheel 5 and the transmission rod 6 are eccentrically structured, so that the worm wheel 5 can drive the transmission rod 6 to move, the transmission rod 6 can drive the rack 7 to move, the rack 7 can drive the pinion 8 to rotate, the pinion 8 can drive the clamping claw 9 to rotate, and the clamping claw 9 can be clamped on the original reinforced concrete cast-in-place pile, and the pile connecting sleeve 1 is fixed on the original reinforced concrete On the concrete cast-in-place pile, then put the extension tube 2 on the top of the pile sleeve 1, rotate the extension tube 2, so that the notch of the clamping strip 13 is clamped on the surface of the clamping block 14, driving the large bevel gear 10 to rotate, and the large bevel gear 10 can drive the small bevel gear 11 to rotate. The size of the large bevel gear 10 and the small bevel gear 11 can produce an acceleration effect on the small bevel gear 11, and the small bevel gear 11 can drive the screw rod 12 to rotate. The screw rod 12 can use the thread to drive the clamping strip 13 to move upward, and the clamping strip 13 can drive the clamping block 14. The combination of the clamping strip 13 and the clamping block 14 can fix the pile sleeve 1 and the extension tube 2.

[0043] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cast-in-place pile connection structure for soft soil foundation, characterized in that: include Pile connecting sleeve (1); An extension tube (2), the extension tube (2) is clamped to the top end of the pile connecting sleeve (1); A transmission box (3), the transmission box (3) is bolted to the bottom end of the surface of the pile sleeve (1); A clamping assembly, the clamping assembly includes a worm (4), a worm wheel (5), a transmission rod (6), a rack (7), a pinion (8) and a clamping claw (9), two worm wheels (5), two transmission rods (6), two racks (7), two pinion (8) and two clamping claws (9), the teeth of the two worm wheels (5) are meshed with the surface of the worm (4), the top of the worm wheel (5) is hinged to one end of the transmission rod (6), the transmission rod (6) is hinged to the rack (7), the teeth of the rack (7) are meshed with the teeth of the pinion (8), and the shaft at the bottom of the pinion (8) is keyed to the hole of the clamping claw (9); A snap-fit assembly, wherein two snap-fit assemblies are provided, and the snap-fit assemblies include a snap-fit strip (13) and a snap-fit block (14), wherein the notch of the snap-fit strip (13) is snap-fitted to the surface of the snap-fit block (14); A lifting mechanism is connected to the clamping strip (13), and the lifting mechanism is used to drive the clamping strip (13) to move up and down.

2. The soft soil foundation cast-in-place pile connection structure according to claim 1, characterized in that: The lifting mechanism comprises a large bevel gear (10), a small bevel gear (11) and a screw rod (12), wherein the teeth of the large bevel gear (10) mesh with the teeth of the small bevel gear (11), the axis of the bottom of the small bevel gear (11) is key-connected to the top of the screw rod (12), and the bottom end of the surface of the screw rod (12) is threadedly connected to the screw hole at the top of the clamping bar (13).

3. The soft soil foundation cast-in-place pile connection structure according to claim 2, characterized in that: The axis of the large bevel gear (10) is rotatably sleeved with the surface of the extension tube (2), and the top end of the surface of the screw rod (12) is rotatably sleeved with the surface of the extension tube (2).

4. The soft soil foundation cast-in-place pile connection structure according to claim 1, characterized in that: Both ends of the worm (4) are rotatably sleeved with holes inside the transmission box (3), and the axis of the worm wheel (5) is rotatably connected to the interior of the transmission box (3).

5. The soft soil foundation cast-in-place pile connection structure according to claim 1, characterized in that: The bottom of the rack (7) is slidably connected to the inside of the transmission box (3), the axis of the pinion (8) is rotatably sleeved with the hole of the transmission box (3), and the inner side of the clamping claw (9) is bonded with an anti-slip pad (15).

6. The soft soil foundation cast-in-place pile connection structure according to claim 1, characterized in that: The clamping strip (13) is slidably connected to the extension tube (2), and the clamping block (14) is bolted to the pile connecting sleeve (1).

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