Precast pile anti-shearing detection support device

Abstract

The utility model relates to a precast pile anti-shearing detection support device which comprises a combined channel and a sliding track which are arranged in parallel, and a fixed support and a sliding support which are bridged at the top ends of the combined channel and the sliding track, the bottom end of the fixed support is movably connected with a first gear, and the bottom end of the sliding support is movably connected with a second gear. A first rack and a second rack are sequentially arranged at the top end of the combined channel, a first indicating ruler and a second indicating ruler are sequentially arranged on the side wall of the combined channel in the length direction, the gears are meshed with the corresponding racks respectively, the bottom end of the sliding support is adjustably connected with the combined channel through a horizontal adjusting rod, and a limiting rod is arranged at the bottom end of the sliding support in a penetrating mode. The limiting rod is in rolling connection with the combined channel and the sliding rail, the top end of the sliding support is fixedly connected with a cross beam, the cross beam is provided with a water level, a precast pile is erected at the top ends of the fixed support and the sliding support, and a distribution beam is arranged at the top end of the precast pile. The precast pile shear resistance detection support device has the advantages of being convenient to adjust, improving the adjusting precision, improving the safety and the like.

Description

Technical Field

[0001] This utility model relates to the field of precast pile shear strength testing technology, and in particular to an adjustable precast pile shear strength testing support device. Background Technology

[0002] Currently, precast piles are a crucial component of pile foundation engineering, which is a vital foundation for building construction. The quality of precast pile construction is closely related to the safety and overall quality of the building project, and is a significant factor influencing project quality. Specifically, the quality of precast piles directly affects construction safety, service life, and structural stability, making it essential to strengthen quality control. Shear resistance is a crucial evaluation indicator for precast piles, but currently, there are no dedicated testing supports for precast pile shear resistance on the market. Testing supports provided by manufacturers are generally poorly manufactured and rarely meet the requirements for shear resistance testing. Traditional precast pile shear resistance testing supports suffer from the following problems:

[0003] 1) The flatness of the support does not meet the test requirements, resulting in an unreasonable stress model. In severe cases, it can cause local pressure failure of the precast components at the support, leading to misjudgments and incorrect conclusions in the performance testing of the precast components.

[0004] 2) There are gaps between the precast piles and the supports, and they are not completely fitted together. During the loading process, this causes the precast components to shake, which affects the deflection detection.

[0005] 3) With the increasing variety of precast piles, varying in length and cross-sectional dimensions, the required loading equipment must also change. Existing loading supports cannot be dimensioned or can not be linearly adjusted, thus failing to meet the loading requirements of various pile types;

[0006] 4) The load-bearing capacity and stability of the loading bracket have not been calculated, and the manufacturing is rough, making it difficult to guarantee the personal safety of the testing personnel and the integrity of the testing equipment during the test.

[0007] To address these issues, we developed a precast pile shear strength testing support device. Utility Model Content

[0008] The purpose of this utility model is to overcome the shortcomings of the prior art by providing a precast pile shear strength testing support device, which has the advantages of easy adjustment, improved adjustment accuracy, and improved safety.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a precast pile shear strength testing support device, comprising a fixed support, a sliding support, a combined channel, and a sliding rail. The bottom end of the fixed support is movably connected to a first gear, and the bottom end of the sliding support is movably connected to a second gear. The top end of the combined channel is provided with a first rack and a second rack in sequence, and the side wall along the length direction is provided with a first indicator ruler and a second indicator ruler in sequence. The first gear meshes with the first rack, and the second gear meshes with the second rack. The bottom end of the sliding support is adjustablely connected to the combined channel via a horizontal adjustment rod, and a limiting rod is inserted through it. The limiting rod is tactilely connected to the combined channel and the sliding rail respectively. The top end of the sliding support is fixedly connected to a crossbeam, and the crossbeam is provided with a level. Precast piles are erected on the top ends of the fixed support and the sliding support, and a distribution beam is provided at the top end of the precast pile.

[0010] Preferably, the horizontal adjusting rod includes a screw and a limiting nut, the limiting nut being pressed into the combined channel and fixedly connected to the screw.

[0011] Preferably, a smooth rod is provided at the bottom end of the screw, and a spring is sleeved on the smooth rod.

[0012] Preferably, a limiting channel is provided at the top of the combined channel, and the spring is pressed between the limiting channel and the horizontal adjusting rod.

[0013] Preferably, the screw has a left-hand thread in the middle, the limiting nut has a conical structure, and the left-hand thread is helically connected to the limiting nut.

[0014] Preferably, a conical hole is provided at the top end of the limiting channel, and the conical hole is pressed against the limiting nut.

[0015] Preferably, a first slide rail is provided at the top of the combined channel, and a second gear is provided at one end of the limiting rod, the second gear sliding within the first slide rail.

[0016] Preferably, a limiting groove is provided at the top end of the sliding track, and a second gear is provided at the other end of the limiting rod, the second gear being in rolling connection with the limiting groove.

[0017] Preferably, the level is a strip structure with a bubble in the middle.

[0018] Preferably, the first gear and the second gear have the same structure and size.

[0019] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] 1. This precast pile shear strength testing bracket is custom-made. The flatness of the fixed support and sliding support can be adjusted to meet the requirements of structural performance testing.

[0021] 2. It can provide a structural performance test support device for specimens with different support height differences and different spans. The height difference and span of the column and support are easy to adjust and the adjustment accuracy is high.

[0022] 3. The support device has sufficient load-bearing capacity and stability to ensure the safety of test personnel and equipment. Attached Figure Description

[0023] Figure 1 This is a front view of the precast pile shear strength testing support device described in this utility model.

[0024] Figure 2 This is a rear view of the precast pile shear strength testing support device described in this utility model.

[0025] Figure 3 This is a schematic diagram of the sliding support connection structure described in this utility model.

[0026] Figure 4 This is a schematic diagram of the connection structure of the horizontal adjusting rod described in this utility model.

[0027] Figure 5 This is a schematic diagram of the limiting rod described in this utility model.

[0028] Figure 6 This is a schematic diagram of the distribution beam described in this utility model. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Figures 1 to 6A precast pile shear strength testing support device includes a fixed support 30 with a small U-shaped structure, a sliding support 40 with a small U-shaped structure, and a combined channel 70 and a sliding track 80 arranged in parallel. The bottom end of the fixed support 30 is movably connected to a first gear 31 and is provided with a first pointer 33. The bottom end of the sliding support 40 is movably connected to a second gear 41 and is provided with a second pointer 42. The top end of the combined channel 70 is provided with a first rack 701 and a second rack 702 in sequence, and the side wall along the length direction is provided with a first... Indicator ruler 703 and a second indicator ruler 704 are connected. A first gear 31 meshes with a first rack 701, and a second gear 41 meshes with a second rack 702. The bottom end of the sliding support 40 is adjustablely connected to the combined channel 70 via a horizontal adjusting rod 50, and a limiting rod 60 is inserted through it. The limiting rod 60 is tactilely connected to the combined channel 70 and the sliding track 80. A crossbeam 49 is fixedly connected to the top of the sliding support 40. The crossbeam 49 has a level 490, which is a strip structure with a bubble 491 in the middle. Precast piles 20 are erected at the top of the fixed support 30 and the sliding support 40. A distribution beam 10 is provided at the top of the precast pile 20, and a support stop 101 is provided in the middle of the distribution beam 10. The distribution beam has a H-shaped structure. The first indicator 703 and the second indicator 704 have the same structural dimensions, the first gear 31 and the second gear 41 have the same structural dimensions, and the first rack 701 and the second rack 702 have the same structural dimensions.

[0031] The horizontal adjusting rod 50 includes a screw 51 and a limiting nut 52. The limiting nut 52 is pressed into the combined channel 70 and fixedly connected to the screw 51. A smooth rod 512 is provided at the bottom end of the screw 51, and a spring 54 is sleeved on the smooth rod 512. A left-hand thread 511 is provided in the middle of the screw 51. The limiting nut 52 has a tapered structure, and the left-hand thread 511 is helically connected to the limiting nut 52. An adjusting rod 505 is adjustablely connected to the bottom end of the fixed support 30. The adjusting rod 505 has the same structural dimensions as the horizontal adjusting rod 50.

[0032] A limiting channel 74 is provided at the top of the combined channel 70, and a spring 54 is pressed between the limiting channel 74 and the horizontal adjusting rod 50. A tapered hole 741 is provided at the top of the limiting channel 74, and the tapered hole 741 is pressed with the limiting nut 52. A first slide rail 73 is provided at the top of the combined channel 70, and a second rack 702 and a first rack 701 are sequentially provided at the top of the first slide rail 73. A second gear 41 is provided at one end of the limiting rod 60, and the second gear 41 slides within the first slide rail 73. The first gear 31 and the second gear 41 have the same structure and dimensions. A threaded end 601 is provided at one end of the limiting rod 60, and a fastening nut 61 is screwed onto the threaded end 601, and the fastening nut 61 is pressed with the second gear 41. A limiting groove 81 is provided at the top of the sliding track 80. A second rack 702 and a first rack 701 are sequentially provided at the top of the limiting groove 81. A second gear 41 is provided at the other end of the limiting rod 60. The second gear 41 is in rolling connection with the limiting groove 81. The horizontal adjusting rod 50 adjusts the flatness of each support through the level 490, and the gear and rack structure adjusts the span between the two supports.

[0033] The sliding track 80 and the combined channel 70 are sequentially set on the horizontal ground. The combined channel 70 is composed of a first sliding track 73 and a limiting channel 74. The fixed support 30 and the sliding support 40 are connected to the sliding track on one side and to the combined channel on the other side. The fixed support and the sliding support are arranged parallel to each other. Each support is positioned to the sliding track 80 and the combined channel 70 by a limiting rod 60. Precast piles are placed at the top of the fixed support and the top of the sliding support. A horizontal adjustment rod 50 is provided at the bottom of one side of the support. The horizontal adjustment rod 50 has a left-hand thread in the middle, and a limiting nut is screwed onto the left-hand thread to adjust the level of the support. The support includes a small-shaped bracket and a trolley (with a gear on the limiting rod) at the bottom of the bracket. A level is provided at the top center of the bracket, and the trolley is connected to the track. A limiting rod is horizontally mounted on the trolley, and a rack is located at the top of the limiting groove. A rack and a strip-shaped limiting groove are located at the top of the combined track. A distance indicator is located on the lower side of the rack, and a vertical pointer is located on the support, indicating the scale of the span indicator. Two spur gears are mounted on the limiting rod, meshing with the rack.

[0034] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A precast pile shearing resistance detection support device, characterized in that: The system includes a fixed support (30), a sliding support (40), a combined channel (70), and a sliding rail (80). The bottom end of the fixed support (30) is movably connected to a first gear (31), and the bottom end of the sliding support (40) is movably connected to a second gear (41). The top end of the combined channel (70) is sequentially provided with a first rack (701) and a second rack (702), and the sidewalls along its length are sequentially provided with a first indicator (703) and a second indicator (704). The first gear (31) meshes with the first rack (701), and the second gear (41) meshes with the first rack (702). The second rack (702) engages, the bottom end of the sliding support (40) is adjustablely connected to the combined channel (70) via a horizontal adjusting rod (50), and a limiting rod (60) is inserted through it. The limiting rod (60) is tumbledly connected to the combined channel (70) and the sliding track (80) respectively. The top end of the sliding support (40) is fixedly connected to a crossbeam (49), and the crossbeam (49) is equipped with a level (490). The fixed support (30) and the top end of the sliding support (40) are supported by precast piles (20), and a distribution beam (10) is provided at the top end of the precast piles (20).

2. The precast pile shearing resistance detection support device according to claim 1, characterized in that, The horizontal adjustment rod (50) includes a screw (51) and a limiting nut (52). The limiting nut (52) is pressed into the combined channel (70) and fixedly connected to the screw (51).

3. The precast pile shearing resistance detection support device according to claim 2, characterized in that, The bottom end of the screw (51) is provided with a smooth rod (512), and the smooth rod (512) is fitted with a spring (54).

4. The precast pile shearing resistance detection support device according to claim 3, characterized in that, The top end of the combined channel (70) is provided with a limiting channel (74), and the limiting channel (74) and the horizontal adjusting rod (50) are pressed together with the spring (54).

5. The precast pile shearing detection support device according to claim 3, wherein, The screw (51) has a left-hand thread (511) in the middle, and the limiting nut (52) has a conical structure. The left-hand thread (511) is helically connected to the limiting nut (52).

6. The precast pile shearing resistance detection support device according to claim 4, characterized in that, The top end of the limiting channel (74) is provided with a conical hole (741), and the conical hole (741) is pressed against the limiting nut (52).

7. The precast pile shearing resistance detection support device according to claim 1, characterized in that, The top end of the combined channel (70) is provided with a first slide rail (73), and one end of the limiting rod (60) is provided with a second gear (41), which slides within the first slide rail (73).

8. The precast pile shearing resistance detection support device according to claim 7, characterized in that, The sliding track (80) is provided with a limiting groove (81) at the top end, and the limiting rod (60) is provided with a second gear (41) at the other end, and the second gear (41) is tactilely connected to the limiting groove (81).

9. The precast pile shearing resistance detection support device according to claim 1, characterized in that, The level (490) has a strip-shaped structure and a bubble (491) is provided in the middle position.

10. The precast pile shearing detection support device according to claim 1, wherein, The first gear (31) has the same structure and size as the second gear (41).

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