Positioning device of bridge pile foundation reinforcement cage and construction method of positioning device

Abstract

The invention discloses a positioning device of a bridge pile foundation reinforcement cage and a construction method of the positioning device. The positioning device comprises a supporting sleeve and a positioning device, wherein the supporting sleeve and a pile hole are coaxially arranged; the limiting arc plates are movably arranged in the supporting sleeve, and a through hole is defined by the limiting arc plates; the linkage mechanism comprises sliding blocks, shear fork rods, a gear ring and a motor, the gear ring is rotatably installed at the upper end of the supporting sleeve, the gear ring and the supporting sleeve are coaxially arranged, the two sliding blocks are arranged in a sliding groove in the inner wall of the supporting sleeve in a sliding mode, a through hole communicated with the sliding groove is formed in the upper end face of the supporting sleeve, a screw rod is rotatably installed in the through hole, and threaded holes are formed in the sliding blocks; the upper ends of the screws are coaxially connected with transmission gears, the lower ends of the screws are screwed in the threaded holes of the two sliding blocks, a first rack is formed on the inner side of the gear ring, the transmission gears on the multiple screws are meshed with the first rack, the motor is installed outside the supporting sleeve and is in transmission connection with the gear ring, and one end of the shear fork rod is connected to the two sliding blocks; and the other end of the shear fork rod is connected to the limiting arc plate. The problem that in existing bridge pile foundation construction, a reinforcement cage and a pile hole cannot be coaxially arranged due to the fact that the reinforcement cage easily shakes horizontally in the lowering process is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a positioning device for a bridge pile foundation reinforcement cage and a construction method thereof. Background Art

[0002] Bridge pile foundation is a concealed project and an important part of bridge engineering. There are many unforeseen factors in the construction process. The quality of the bridge pile foundation directly affects the engineering quality of the entire bridge.

[0003] In the existing bridge pile foundation construction, when the steel cage is lowered into the pile hole, the steel cage is prone to sway in the horizontal direction, resulting in the steel cage not being coaxial with the pile hole. Adjusting the position of the steel cage later not only takes time, prolongs the construction period, but also requires a lot of labor costs.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In order to overcome the defects of the prior art, a positioning device for a bridge pile foundation steel cage and a construction method thereof are provided to solve the problem that in the existing bridge pile foundation construction, the steel cage is prone to horizontal shaking during the lowering process, resulting in the steel cage and the pile hole being unable to be coaxially arranged.

[0006] In order to achieve the above object, a positioning device for a bridge pile foundation reinforcement cage is provided, comprising:

[0007] A support sleeve is installed at the opening of the pile hole, wherein the support sleeve is coaxially arranged with the pile hole;

[0008] A plurality of limit arc plates, wherein the limit arc plates are movably arranged in the support sleeve, and the plurality of limit arc plates enclose a through hole;

[0009] The linkage mechanism comprises a slider, a scissor rod, a gear ring and a motor, wherein the gear ring is rotatably mounted on the upper end of the supporting sleeve, the gear ring is coaxially arranged with the supporting sleeve, the inner wall of the supporting sleeve is formed with a slide groove arranged along the axial direction of the supporting sleeve, two sliders are slidably arranged in the slide groove, the upper end surface of the supporting sleeve is provided with a through hole connected to the slide groove, a screw is rotatably mounted in the through hole, the slider is provided with a threaded hole, the upper end of the screw is coaxially connected with a transmission gear, the lower end of the screw is screwed into the threaded holes of the two sliders, a first rack is formed on the inner side of the gear ring, and the The first rack is arranged in a circle along the circumferential direction of the gear ring, and the transmission gears on the multiple screw rods are meshed with the first rack. The motor is installed on the outside of the supporting sleeve and is transmission-connected to the gear ring. One end of the scissor rod is connected to the two sliders, and the other end of the scissor rod is connected to the limiting arc plate. After the motor drives the gear ring to rotate, the screw rod drives the two sliders to slide toward or away from each other to adjust the length of the scissor rod, so that the multiple limiting arc plates move along the radial direction of the supporting sleeve at the same time, thereby making the aperture size of the perforation adapt to the outer diameter of the pile foundation steel cage.

[0010] Furthermore, the scissor rod includes two connecting rods, the middle parts of the two connecting rods are pivotally connected together, one end of the two connecting rods is respectively hinged to the two sliding blocks, and the other ends of the two connecting rods are respectively hinged to the limiting arc plates.

[0011] Furthermore, the other end of one connecting rod is hinged to the upper part of the outer arc surface of the limiting arc plate, and the other end of the other connecting rod is hinged to the lower part of the outer arc surface of the limiting arc plate.

[0012] Furthermore, a second rack is formed on the outer side of the gear ring, and the second rack is arranged in a circle along the circumferential direction of the gear ring. The output shaft of the motor is coaxially connected with a driving gear, and the driving gear is meshed with the second rack.

[0013] Furthermore, the gear ring is rotatably mounted on the outer edge of the upper end surface of the supporting sleeve via a slewing bearing.

[0014] Furthermore, a plurality of supports are formed on the outer side of the support sleeve, and the supports are installed on the foundation at the opening of the pile hole through anchor rods.

[0015] The present invention provides a construction method for a positioning device of a bridge pile foundation reinforcement cage, comprising the following steps:

[0016] Installing a support sleeve at the opening of the pile hole so that the support sleeve is coaxial with the pile hole;

[0017] The motor of the linkage mechanism drives the gear ring to rotate, and the screw drives the two sliders in the slide groove of the inner wall of the support sleeve to slide toward or away from each other to adjust the length of the scissor rod, so that the multiple limit arc plates move along the radial direction of the support sleeve at the same time, thereby making the aperture size of the perforation adapt to the outer diameter of the pile foundation reinforcement cage;

[0018] Hoisting the steel cage so that the steel cage is aligned with the perforation;

[0019] The steel cage is lowered to be movably inserted into the through hole, so that the steel cage is coaxially arranged in the pile hole.

[0020] The beneficial effect of the present invention is that the positioning device of the bridge pile foundation steel cage of the present invention drives multiple limiting arc plates to move closer or spread in the radial direction of the supporting sleeve synchronously and uniformly through a linkage mechanism, so that the through-hole is coaxially arranged with the pile hole of the pile foundation, and then the pile foundation steel cage inserted in the through-hole will not experience horizontal shaking and deviation during the process of lowering, thereby improving the positioning accuracy of the pile foundation steel bars.

[0021] The positioning device for the bridge pile foundation reinforcement cage of the present invention starts the motor to drive the successive arc plates to move closer or spread apart to position the pile foundation reinforcement cage, thereby saving a large amount of manpower and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 It is a structural schematic diagram of a positioning device for a bridge pile foundation reinforcement cage according to an embodiment of the present invention.

[0024] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the figure. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] Reference Figure 1 and Figure 2As shown, the present invention provides a positioning device for a bridge pile foundation reinforcement cage, comprising: a supporting sleeve 1, a limiting arc plate 2, and a linkage mechanism.

[0028] The support sleeve 1 is installed at the hole of the pile hole. The inner diameter of the support sleeve is larger than the hole of the pile hole. The support sleeve is arranged just above the hole. The support sleeve 1 is arranged coaxially with the pile hole.

[0029] There are multiple limit arc plates 2. In the embodiment, there are four limit arc plates. The four limit arc plates are arranged along the circumferential direction of the support sleeve. The limit arc plates 2 are movably arranged in the support sleeve 1. Multiple limit arc plates 2 enclose to form a perforation.

[0030] The linkage mechanism is used to simultaneously drive multiple limit arc plates so that the multiple limit arc plates move in the same direction along the radial direction of the support sleeve, that is, the multiple limit arc plates simultaneously approach the center of the support sleeve, or simultaneously move away from the center of the support sleeve.

[0031] Specifically, the linkage mechanism includes a slider 31 , a scissor lever 32 , a gear ring 33 , a motor 34 , a screw rod 35 and a transmission gear 36 .

[0032] The gear ring 33 is rotatably mounted on the upper end of the support sleeve 1. The gear ring 33 and the support sleeve 1 are coaxially arranged.

[0033] In this embodiment, the gear ring 33 is rotatably mounted on the outer edge of the upper end surface of the support sleeve 1 through a slewing bearing.

[0034] As a preferred embodiment, a plurality of supports are formed on the outer side of the support sleeve 1. The supports are installed on the foundation at the hole opening of the pile hole through anchor rods. The length of the supports gradually decreases from bottom to top.

[0035] The inner wall of the support sleeve 1 is formed with a slide groove arranged along the axial direction of the support sleeve 1. In this embodiment, the number of the supports is four. The position of each support corresponds to the position of the slide groove. Two sliders 31 are slidably arranged in the slide groove.

[0036] The upper end surface of the support sleeve 1 is provided with a through hole connected to the slide groove. A screw rod 35 is rotatably installed in the through hole. The slider 31 is provided with a threaded hole. The upper end of the screw rod 35 is coaxially connected to a transmission gear 36. The lower end of the screw rod 35 is screwed into the threaded holes of the two sliders 31.

[0037] A first rack is formed inside the gear ring 33. The first rack is arranged in a circle along the circumferential direction of the gear ring 33. The transmission gears 36 on the plurality of screw rods 35 are meshed with the first rack.

[0038] The motor 34 is installed outside the supporting sleeve 1 and is transmission-connected to the gear ring 33. One end of the scissor rod 32 is connected to the two sliders 31. The other end of the scissor rod 32 is connected to the limit arc plate 2.

[0039] See also Figure 2 As shown, the scissor rod 32 includes two connecting rods. The middle parts of the two connecting rods are pivotally connected together, and one end of the two connecting rods is respectively hinged to the two sliders 31. The other ends of the two connecting rods are respectively hinged to the limit arc plate 2.

[0040] Specifically, in this embodiment, the other end of one connecting rod is hinged to the upper part of the outer arc surface of the limiting arc plate 2. The other end of another connecting rod is hinged to the lower part of the outer arc surface of the limiting arc plate 2.

[0041] After the motor 34 drives the gear ring 33 to rotate, the screw 35 drives the two sliders 31 to slide toward or away from each other to adjust the length of the scissor rod 32, so that the multiple limit arc plates 2 move simultaneously along the radial direction of the supporting sleeve 1, thereby making the hole diameter size of the perforation adapt to the outer diameter of the pile foundation steel cage 4.

[0042] As a preferred embodiment, a second rack is formed on the outer side of the gear ring 33. The second rack is arranged in a circle along the circumferential direction of the gear ring 33. The output shaft of the motor 34 is coaxially connected with a driving gear 37. The driving gear 37 is meshed with the second rack.

[0043] In this embodiment, the motor drives the gear ring to rotate through the driving gear. The gear ring drives the four transmission gears inside it to rotate, so that the screw rod rotates forward or reversely. The threaded holes in the two sliders have opposite thread directions. When the screw rod rotates, the two sliders screwed on the screw rod move closer to or farther away from each other.

[0044] When the two sliders move away from each other, the length of the scissor rod becomes shorter, and the limiting arc plate moves away from the center of the supporting sleeve along the radial direction of the supporting sleeve, thereby enlarging the aperture of the through hole formed by the multiple limiting arc plates.

[0045] On the contrary, when the two sliders approach each other, the length of the scissor rod becomes longer, and the limiting arc plate approaches the center of the supporting sleeve along the radial direction of the supporting sleeve, thereby reducing the aperture of the perforation formed by the multiple limiting arc plates.

[0046] In this embodiment, the size of the perforation is adjusted based on the outer diameter of the pile foundation reinforcement cage.

[0047] The present invention provides a construction method for a positioning device of a bridge pile foundation reinforcement cage, comprising the following steps:

[0048] S1. Install the support sleeve 1 at the opening of the pile hole so that the support sleeve 1 is coaxial with the pile hole.

[0049] S2. The motor 34 of the linkage mechanism drives the gear ring 33 to rotate, and the screw 35 drives the two sliders 31 in the slide groove of the inner wall of the supporting sleeve 1 to slide toward or away from each other to adjust the length of the scissor rod 32, so that the multiple limiting arc plates 2 move along the radial direction of the supporting sleeve 1 at the same time, thereby making the hole diameter size of the perforation adapt to the outer diameter of the pile foundation steel cage 4.

[0050] S3, hoist the steel cage 4 so that the steel cage 4 is aligned with the perforation.

[0051] S4, lowering the steel cage 4 so that the steel cage 4 can be movably inserted into the through hole, so that the steel cage 4 is coaxially arranged in the pile hole.

[0052] The positioning device of the bridge pile foundation reinforcement cage of the present invention drives multiple limiting arc plates to move closer or spread in the radial direction of the supporting sleeve synchronously and uniformly through a linkage mechanism, so that the through hole is coaxially arranged with the pile hole of the pile foundation, and then the pile foundation reinforcement cage inserted in the through hole will not experience horizontal shaking and deviation during the process of lowering, thereby improving the positioning accuracy of the pile foundation reinforcement.

[0053] The positioning device for the bridge pile foundation reinforcement cage of the present invention starts the motor to drive the successive arc plates to move closer or spread apart to position the pile foundation reinforcement cage, thereby saving a large amount of manpower and improving work efficiency.

[0054] The positioning device of the bridge pile foundation steel cage of the present invention can locate the installation position of the pile foundation steel cage in advance, so that the pile foundation steel cage can be effectively positioned during the lowering process, avoiding the horizontal shaking of the pile foundation steel cage. After the steel cage is lowered, the center of the steel cage has coincided with the center of the pile hole, and there is no need to adjust the position of the steel cage again, which reduces the work intensity of the workers and improves the installation efficiency of the steel cage.

[0055] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A positioning device for a bridge pile foundation reinforcement cage, characterized in that: include: A support sleeve is installed at the opening of the pile hole, wherein the support sleeve is coaxially arranged with the pile hole; A plurality of limit arc plates, wherein the limit arc plates are movably arranged in the support sleeve, and the plurality of limit arc plates enclose a through hole; The linkage mechanism comprises a slider, a scissor rod, a gear ring and a motor, wherein the gear ring is rotatably mounted on the upper end of the supporting sleeve, the gear ring is coaxially arranged with the supporting sleeve, the inner wall of the supporting sleeve is formed with a slide groove arranged along the axial direction of the supporting sleeve, two sliders are slidably arranged in the slide groove, the upper end surface of the supporting sleeve is provided with a through hole connected to the slide groove, a screw is rotatably mounted in the through hole, the slider is provided with a threaded hole, the upper end of the screw is coaxially connected with a transmission gear, the lower end of the screw is screwed into the threaded holes of the two sliders, a first rack is formed on the inner side of the gear ring, and the The first rack is arranged in a circle along the circumferential direction of the gear ring, and the transmission gears on the multiple screw rods are meshed with the first rack. The motor is installed on the outside of the supporting sleeve and is transmission-connected to the gear ring. One end of the scissor rod is connected to the two sliders, and the other end of the scissor rod is connected to the limiting arc plate. After the motor drives the gear ring to rotate, the screw rod drives the two sliders to slide toward or away from each other to adjust the length of the scissor rod, so that the multiple limiting arc plates move along the radial direction of the supporting sleeve at the same time, thereby making the aperture size of the perforation adapt to the outer diameter of the pile foundation steel cage.

2. The positioning device for the bridge pile foundation reinforcement cage according to claim 1 is characterized in that: The scissor rod comprises two connecting rods, the middle parts of the two connecting rods are pivotally connected together, one end of the two connecting rods is respectively hinged to the two sliding blocks, and the other ends of the two connecting rods are respectively hinged to the limiting arc plates.

3. The positioning device for the bridge pile foundation reinforcement cage according to claim 2, characterized in that: The other end of one connecting rod is hinged to the upper part of the outer arc surface of the limiting arc plate, and the other end of the other connecting rod is hinged to the lower part of the outer arc surface of the limiting arc plate.

4. The positioning device for a bridge pile foundation reinforcement cage according to claim 1, characterized in that: A second rack is formed on the outer side of the gear ring. The second rack is arranged in a circle along the circumferential direction of the gear ring. The output shaft of the motor is coaxially connected with a driving gear, and the driving gear is meshed with the second rack.

5. The positioning device for the bridge pile foundation reinforcement cage according to claim 1, characterized in that: The gear ring is rotatably mounted on the outer edge of the upper end surface of the supporting sleeve through a slewing bearing.

6. The positioning device for the bridge pile foundation reinforcement cage according to claim 1, characterized in that: A plurality of supports are formed on the outer side of the support sleeve, and the supports are installed on the foundation at the opening of the pile hole through anchor rods.

7. A construction method for the positioning device of the bridge pile foundation reinforcement cage according to any one of claims 1 to 6, characterized in that: The following steps are involved: Installing a support sleeve at the opening of the pile hole so that the support sleeve is coaxial with the pile hole; The motor of the linkage mechanism drives the gear ring to rotate, and the screw drives the two sliders in the slide groove of the inner wall of the support sleeve to slide toward or away from each other to adjust the length of the scissor rod, so that the multiple limit arc plates move along the radial direction of the support sleeve at the same time, thereby making the aperture size of the perforation adapt to the outer diameter of the pile foundation reinforcement cage; Hoisting the steel cage so that the steel cage is aligned with the perforation; The steel cage is lowered to be movably inserted into the through hole, so that the steel cage is coaxially arranged in the pile hole.

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