Automatic tensioning device for prestressed high-strength concrete pipe pile

Abstract

The utility model discloses a kind of automatic tensioning devices of prestressed high-strength concrete pipe pile, it is related to concrete pipe pile processing technical field, and the utility model includes bottom plate, the top of bottom plate is equipped with pile body, both ends of the pile body are equipped with screw shaft, the outer surface of screw shaft is equipped with clamping assembly, the both ends of bottom plate are fixedly connected with tensioning assembly, the tensioning assembly includes base, the bottom surface of base is fixedly connected with bottom plate, the top surface of base is equipped with multiple sliding grooves that are equidistantly distributed, the inner wall between the both sides of the sliding groove in middle is rotatably connected with screw rod, the inner wall of sliding groove is slidably connected with sliding block, the sliding block in middle is threadedly connected with screw rod, the both sides of the both sides inner wall of sliding groove are fixedly connected with guide rod, the both sides of the sliding block are movably connected with guide rod, the utility model can tension prestressed high-strength concrete pipe pile, and prestressed reinforcing steel is clamped and fixed to avoid disengagement.

Description

Technical Field

[0001] This utility model relates to the field of concrete pipe pile processing technology, specifically to an automatic tensioning device for prestressed high-strength concrete pipe piles. Background Technology

[0002] During the production of pipe piles, the steel cage or axial main reinforcement members in the pipe mold need to be prestressed. Prestressing is to apply a tension force to the steel cage, and then the steel cage or axial main reinforcement members under tension will generate prestress, which will cause the components to deform accordingly to resist the various loads on the pipe pile itself.

[0003] However, existing technologies still have many defects in some similar structures when used in practice. For example, insufficient prestressed pipe piles may suddenly fail due to insufficient bearing capacity during construction and use. Insufficient tension will affect the quality of concrete pipe piles and make it inconvenient to tension prestressed high-strength concrete pipe piles. At the same time, if the clamping and fixing of the prestressed steel bars fails during the tensioning process, the steel bars will suddenly detach and release huge elastic potential energy, which may be ejected at high speed, causing impact injuries to the surrounding construction personnel, or even endangering their lives.

[0004] To address the aforementioned problems, the inventors proposed an automatic tensioning device for prestressed high-strength concrete pipe piles. Utility Model Content

[0005] To address the problems of inconvenience in tensioning prestressed high-strength concrete pipe piles and the potential for detachment due to inconvenience in clamping and fixing prestressed steel bars, the purpose of this utility model is to provide an automatic tensioning device for prestressed high-strength concrete pipe piles.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: an automatic tensioning device for prestressed high-strength concrete pipe piles, comprising a base plate, a pile body provided on the top of the base plate, a screw shaft provided at both ends of the pile body, a snap-fit ​​assembly provided on the outer surface of the screw shaft, a tensioning assembly fixedly connected to both ends of the base plate, the tensioning assembly comprising a base, the bottom surface of the base being fixedly connected to the base plate, a plurality of equally spaced sliding grooves being provided on the top surface of the base, a lead screw being rotatably connected between the inner walls of the two sides of the middle sliding groove, a motor being fixedly connected to one side of the base, the output end of the motor extending into the base and fixedly connected to the lead screw, a slider being slidably connected to the inner wall of the sliding groove, the middle slider being threadedly sleeved with the lead screw, a slide plate being fixedly connected to the top surface of the slider, and a plurality of support rods distributed in a rectangular array being fixedly connected to the top surface of the slide plate.

[0007] As a preferred technical solution of this application, the snap-fit ​​assembly includes a support plate, a fixing rod is symmetrically fixedly connected to one side of the top surface of the support plate, a housing is fixedly connected to the top end of the fixing rod, a threaded rod is threaded onto the outer surface of the housing, a rotating plate is fixedly connected to one end of the threaded rod, and a connecting plate is rotatably connected to the other end of the threaded rod.

[0008] The above technical solution positions the snap-fit ​​assembly at the screw shafts at both ends of the pile body. Rotating the rotating plate causes the threaded rod to rotate on the housing. The threaded rod pushes the connecting plate to move, so that the threaded groove on the inner wall of the connecting plate is threadedly connected to the screw shaft, thus fixing the snap-fit ​​assembly to the screw shaft. This effectively clamps and fixes the prestressed steel bars to prevent them from detaching.

[0009] As a preferred technical solution of this application, the top surface of the base plate is fixedly connected with a plurality of supports distributed at equal intervals, and the inner wall of the supports is in contact with the outer surface of the pile.

[0010] The above technical solution involves placing the pile on the base plate and using a bracket to support and position the pile, thus ensuring its stability.

[0011] As a preferred technical solution of this application, a guide rod is fixedly connected between the inner walls of the two sides of the slide groove, and the sliders on both sides are movably sleeved with the guide rods.

[0012] The above technical solution guides the slider using a guide rod.

[0013] As a preferred technical solution of this application, the outer surface of the slider is in contact with the inner wall of the groove.

[0014] With the above technical solution, the slider slides on the inner wall of the groove.

[0015] As a preferred technical solution of this application, the bottom surface of the support plate is fixedly connected to the support rod.

[0016] The above technical solution enables the support rod to move the support plate.

[0017] As a preferred technical solution of this application, the inner wall of the connecting plate is provided with a threaded groove for use with the screw shaft.

[0018] Through the above technical solution, the threaded groove on the inner wall of the connecting plate is threadedly connected to the screw shaft, thus fixing the snap-fit ​​assembly and the screw shaft together.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model allows the middle slider to move along the axial direction of the screw in the sliding groove when the screw rotates. Driven by the movement of the middle slider, the sliders on both sides also slide in the corresponding sliding grooves, causing the sliding plate and support rod to move the snap-fit ​​assembly, pull the screw shaft, and thus tension the prestressed steel bars inside the pile body, thereby achieving the purpose of effectively tensioning prestressed high-strength concrete pipe piles.

[0021] 2. This utility model can rotate the rotating plate to drive the threaded rod to rotate on the housing. The threaded rod pushes the connecting plate to move, so that the threaded groove on the inner wall of the connecting plate is threadedly connected to the screw shaft, and the clamping component is fixed together with the screw shaft, thereby achieving the purpose of effectively clamping and fixing the prestressed steel bars to prevent them from falling off. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a front view of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the pile body of this utility model.

[0025] Figure 3 This is a schematic diagram of the snap-fit ​​assembly of this utility model.

[0026] Figure 4 This is a schematic diagram of the tensioning component of this utility model.

[0027] In the diagram: 1. Base plate; 2. Pile body; 3. Screw shaft; 4. Clip assembly; 5. Tensioning assembly; 6. Bracket; 41. Support plate; 42. Fixing rod; 43. Shell; 44. Threaded rod; 45. Rotating plate; 46. Connecting plate; 47. Threaded groove; 51. Base; 52. Slide groove; 53. Lead screw; 54. Motor; 55. Guide rod; 56. Slider; 57. Slide plate; 58. Support rod. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example: Figure 1-4 As shown, this utility model provides an automatic tensioning device for prestressed high-strength concrete pipe piles, including a base plate 1. Multiple supports 6 are fixedly connected to the top surface of the base plate 1 at equal intervals. The inner wall of the supports 6 is in contact with the outer surface of the pile body 2. The pile body 2 is provided above the base plate 1. Both ends of the pile body 2 are provided with screw shafts 3. The outer surface of the screw shafts 3 is provided with snap-fit ​​components 4. Both ends of the base plate 1 are fixedly connected with tensioning components 5.

[0030] The tensioning assembly 5 includes a base 51, the bottom surface of which is fixedly connected to the base plate 1. The top surface of the base 51 has multiple equally spaced grooves 52. A lead screw 53 is rotatably connected between the inner walls of the two sides of the middle groove 52. A motor 54 is fixedly connected to one side of the base 51. The output end of the motor 54 extends into the base 51 and is fixedly connected to the lead screw 53. Guide rods 55 are fixedly connected between the inner walls of the two sides of the grooves 52. Slider blocks 56 on both sides are movably sleeved with the guide rods 55. Slider blocks 56 are slidably connected to the inner walls of the grooves 52. The middle slider 56 is threadedly sleeved with the lead screw 53. The outer surface of the slider 56 is in contact with the inner wall of the groove 52. A slide plate 57 is fixedly connected to the top surface of the slider 56. Multiple support rods 58 arranged in a rectangular array are fixedly connected to the top surface of the slide plate 57.

[0031] Pull the screw shaft 3 to tension the prestressed steel bars inside the pile body 2.

[0032] The snap-fit ​​assembly 4 includes a support plate 41, the bottom surface of which is fixedly connected to the support rod 58. A fixing rod 42 is symmetrically fixedly connected to one side of the top surface of the support plate 41. A housing 43 is fixedly connected to the top of the fixing rod 42. A threaded rod 44 is threaded onto the outer surface of the housing 43. A rotating plate 45 is fixedly connected to one end of the threaded rod 44. A connecting plate 46 is rotatably connected to the other end of the threaded rod 44. A threaded groove 47 for use with the screw shaft 3 is opened on the inner wall of the connecting plate 46.

[0033] The threaded groove 47 on the inner wall of the connecting plate 46 is threadedly connected to the screw shaft 3, fixing the snap-fit ​​assembly 4 and the screw shaft 3 together.

[0034] The working principle of the automatic tensioning device for prestressed high-strength concrete pipe piles in this embodiment is as follows: The pile body 2 is placed on the base plate 1, and the pile body 2 is supported and positioned by the bracket 6 to keep the pile body 2 stable. The snap-fit ​​component 4 is located at the screw shaft 3 at both ends of the pile body 2. The rotating plate 45 is rotated, which drives the threaded rod 44 to rotate on the shell 43. The threaded rod 44 pushes the connecting plate 46 to move, so that the threaded groove 47 on the inner wall of the connecting plate 46 is threadedly connected to the screw shaft 3, and the snap-fit ​​component 4 is fixed together with the screw shaft 3, thereby achieving the purpose of effectively clamping and fixing the prestressed steel bars to prevent them from falling off.

[0035] When the motor 54 is started, the output end of the motor 54 drives the lead screw 53 to rotate. Since the middle slider 56 is threadedly connected to the lead screw 53, when the lead screw 53 rotates, the middle slider 56 moves along the axial direction of the lead screw 53 in the sliding groove 52. Driven by the movement of the middle slider 56, the sliders 56 on both sides also slide in the corresponding sliding grooves 52, causing the sliding plate 57 and the support rod 58 to drive the snap-fit ​​assembly 4 to move, pulling the screw shaft 3, thereby tensioning the prestressed steel bars inside the pile body 2, thus achieving the purpose of effectively tensioning the prestressed high-strength concrete pipe pile.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A prestressed high-strength concrete pipe pile automatic tensioning device, comprising a base plate (1), characterized in that: A pile body (2) is provided above the base plate (1). Both ends of the pile body (2) are provided with screw shafts (3). The outer surface of the screw shafts (3) is provided with snap-fit ​​components (4). Both ends of the base plate (1) are fixedly connected with tensioning components (5). The tensioning assembly (5) includes a base (51), the bottom surface of which is fixedly connected to the base plate (1). The top surface of the base (51) is provided with a plurality of equally spaced grooves (52). A lead screw (53) is rotatably connected between the inner walls of the two sides of the middle groove (52). A motor (54) is fixedly connected to one side of the base (51). The output end of the motor (54) extends into the base (51) and is fixedly connected to the lead screw (53). A slider (56) is slidably connected to the inner wall of the groove (52). The middle slider (56) is threadedly connected to the lead screw (53). A slide plate (57) is fixedly connected to the top surface of the slider (56). A plurality of support rods (58) arranged in a rectangular array are fixedly connected to the top surface of the slide plate (57).

2. The automatic tensioning device for pre-stressed high-strength concrete pipe pile according to claim 1, characterized in that: The snap-fit ​​assembly (4) includes a support plate (41), a fixing rod (42) is symmetrically fixedly connected to one side of the top surface of the support plate (41), a housing (43) is fixedly connected to the top end of the fixing rod (42), a threaded rod (44) is threadedly sleeved on the outer surface of the housing (43), a rotating plate (45) is fixedly connected to one end of the threaded rod (44), and a connecting plate (46) is rotatably connected to the other end of the threaded rod (44).

3. The automatic tensioning device for pre-stressed high-strength concrete pipe pile according to claim 1, characterized in that: The top surface of the base plate (1) is fixedly connected with a plurality of supports (6) distributed at equal intervals, and the inner wall of the supports (6) is in contact with the outer surface of the pile body (2).

4. The automatic tensioning device for pre-stressed high-strength concrete pipe pile according to claim 1, characterized in that: Guide rods (55) are fixedly connected between the inner walls of the two sides of the slide grooves (52), and the sliders (56) on both sides are movably connected to the guide rods (55).

5. The automatic tensioning device for pre-stressed high-strength concrete pipe pile according to claim 1, characterized in that: The outer surface of the slider (56) is in contact with the inner wall of the groove (52).

6. The automatic tensioning device for pre-stressed high-strength concrete pipe pile according to claim 2, characterized in that: The bottom surface of the support plate (41) is fixedly connected to the support rod (58).

7. The automatic tensioning device for pre-stressed high-strength concrete pipe pile according to claim 2, characterized in that: The inner wall of the connecting plate (46) is provided with a threaded groove (47) for use with the screw shaft (3).

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