Pile foundation pulling resistance detection device

Abstract

The utility model discloses a pile foundation anti-pulling detection device which comprises a machine frame and further comprises a sliding groove formed in one side of the machine frame, a lead screw is arranged in the sliding groove, one end of the lead screw is connected with a motor, a sliding base is installed on the lead screw, a jacking mechanism is connected to the sliding base, a pressing mechanism is installed below the jacking mechanism, and a limiting mechanism is installed on one side of the jacking mechanism. During construction, the device is lifted to the position above a pile foundation by a crane and slowly falls down, the motor is started by adjusting the general direction through the sliding seat, and when the baffle is in contact with the pile body, the prompt rod extending out of the position above moves along the buffer groove, the motor is closed and the device is put down, so that the pile body can be aligned once the motor is switched on and off during construction, and the construction progress is accelerated; the buffer groove can prevent the baffle from being excessively pushed to be broken, the pressing mechanism is controlled to move downwards, the hydraulic cylinder is started to be pressed to the surface of the pile body after the baffle reaches the detection position, uplift detection of the pile foundation is started, the opposite pressing plate reduces single-side uneven stress of the pile body in the detection process, and experimental data are accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the field of construction detection, in particular to a pile foundation anti-pulling detection device. Background Art

[0002] The existing announcement number is CN220335973U, which is a pile foundation pull-out detection device, including a mounting frame, a mobile frame, a sliding plate and a pressing assembly, etc. There are two mounting frames, and the upper part of the mounting frame is slidably connected with a mobile frame, and the mobile frame is slidably connected with a sliding plate, and the sliding plate is connected with a pressing assembly. The utility model cooperates between the positioning block and the slide rod, so that the positioning block can quickly locate the installation position, thereby improving the efficiency of pile foundation pull-out detection, and adjusts the position of the pressing assembly and the clamping assembly through the sliding plate and the mobile frame, so that the clamping assembly can quickly and accurately align with the pile foundation position, thereby improving the accuracy of the clamping pile foundation. However, in actual use, it is difficult for the motor-driven mobile frame to make the clamping assembly accurately reach the pile body, and the motor needs to be repeatedly started for position calibration, and the effect of the limit plate causes the pile body to be subjected to unilateral friction, which may affect the data accuracy. Utility Model Content

[0003] The purpose of the utility model is to provide a pile foundation anti-pullout detection device in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A pile foundation pull-out detection device comprises a frame and a slide groove arranged on one side of the frame, a lead screw is arranged in the slide groove, one end of the lead screw is connected to a motor, a slide seat is installed on the lead screw, a jacking mechanism is connected on the slide seat, a pressing mechanism is installed below the jacking mechanism, a limiting mechanism is installed on one side of the jacking mechanism, the limiting mechanism comprises a baffle plate, a fixed seat is arranged on one side of the baffle plate, a pressing plate inserted into the fixed seat is fixed on one side of the fixed seat, a first return spring is arranged on the other end of the pressing plate, a pushing block is arranged on the upper side of the pressing plate, a buffer groove is opened on the upper side of the fixed seat, a prompt rod is arranged in the buffer groove, a limiting slide rail is arranged on the inner wall of the buffer groove, a slide rod is slidably connected in the limiting slide rail, the slide rod is welded to the prompt rod, a limiting block is arranged at the lower end of the prompt rod, and a second return spring is arranged on one side of the limiting block.

[0006] Further configuration: the jacking mechanism includes a jack arranged on a slide seat, the upper end of the jack is connected to a top plate, a support column is welded to the lower side of the top plate, a fixed plate is installed at the lower end of the support column, and a buffer groove through which a prompt rod passes is set on the fixed plate.

[0007] Further configuration: the pressing mechanism includes a first pressing plate and a second pressing plate arranged opposite to each other, and an opposing pressing plate arranged corresponding to the baffle plate, and hydraulic cylinders are fixed on the first pressing plate, the second pressing plate, the opposing pressing plate and the fixing seat.

[0008] It is further arranged that the baffle plate is in gap contact with the movable rod of the corresponding hydraulic cylinder.

[0009] It is further arranged that: the horizontal height of the baffle plate is staggered with the first pressing plate, the first pressing plate is horizontally aligned with the second pressing plate, and the baffle plate is horizontally aligned with the opposite pressing plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] During construction, the utility model uses a crane to lift the device to the top of the pile foundation and slowly drops it, and the motor is turned on by adjusting the approximate orientation through the slide seat. When the baffle plate contacts the pile body, the limit block drives the prompt rod to move along the limit slide rail, and the prompt rod extended from the top moves along the buffer groove and then turns off the motor, and the device is lowered to work. During construction, the motor switch can be switched on and off once to align the pile body, which speeds up the construction progress. The buffer groove can prevent the motor from being turned off in time and pushing the baffle plate excessively to cause it to break. Then the jack is turned on, and the first pressing plate and the second pressing plate below are displaced downward. After reaching the pile body detection position, the hydraulic cylinder is started to press it with the pile body surface, the hydraulic cylinder behind the opposite pressing plate and the hydraulic cylinder behind the baffle plate are opened, and the jack is started to start the pull-out test of the pile foundation. The setting of the opposite pressing plate reduces the unilateral uneven force on the pile body during detection, and the experimental data is relatively accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is an axonometric diagram of a pile foundation anti-pullout detection device described in the utility model;

[0014] Figure 2 It is a bottom view of a pile foundation anti-pullout detection device described in the utility model;

[0015] Figure 3 It is an enlarged schematic diagram of a lead screw of a pile foundation anti-pulling detection device described in the utility model;

[0016] Figure 4 It is a schematic diagram of a limiting mechanism of a pile foundation anti-pulling detection device described in the utility model;

[0017] Figure 5 It is a cross-sectional view of a limiting mechanism of a pile foundation anti-pullout detection device described in the utility model.

[0018] The following are the descriptions of the reference numerals:

[0019] 101, frame; 102, motor; 103, screw; 201, jack; 202, top plate; 203, slide seat; 204, fixed plate; 301, baffle plate; 302, fixed seat; 303, prompt rod; 304, buffer groove; 305, push block; 306, limit slide rail; 307, limit block; 401, opposite clamping plate; 402, first clamping plate; 403, second clamping plate. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] like Figure 1-Figure 5 As shown, a pile foundation pull-out detection device includes a frame 101, and also includes a slide groove arranged on one side of the frame 101, a lead screw 103 is arranged in the slide groove, one end of the lead screw 103 is connected to a motor 102, a slide seat 203 is installed on the lead screw 103, a jacking mechanism is connected to the slide seat 203, a pressing mechanism is installed below the jacking mechanism, and a limiting mechanism is installed on one side of the jacking mechanism.

[0024] In this embodiment, the limiting mechanism includes a baffle 301, a fixed seat 302 is provided on one side of the baffle 301, a pressing plate inserted into the fixed seat 302 is fixed on one side of the fixed seat 302, a first return spring is provided on the other end of the pressing plate, a pushing block 305 is installed on the upper side of the pressing plate, a buffer groove 304 is provided on the upper side of the fixed seat 302, a prompting rod 303 is provided in the buffer groove 304, a limiting slide rail 306 is provided on the inner wall of the buffer groove 304, a slide rod is slidably connected in the limiting slide rail 306, the slide rod is welded to the prompting rod 303, a limiting block 307 is provided at the lower end of the prompting rod 303, and a second return spring is provided on one side of the limiting block 307. During construction, the device is hoisted to the top of the pile foundation by a crane and slowly falls, and the slide seat 20 After adjusting the approximate orientation, the motor 102 is turned on to rotate the lead screw 103, driving the lifting mechanism to move along the slide groove. When the baffle 301 contacts the pile body, the pressing plate is compressed, driving the push block 305 to move and contact the limit block 307. The limit block 307 drives the prompt rod 303 to move along the limit slide rail 306. When the prompt rod 303 extending from the top moves along the buffer groove 304, it means that the baffle 301 has completely contacted the pile body, and the motor 102 can be turned off, and the device can be put down to work. The setting of the prompt rod 303 can make the motor 102 open once during construction to align the pile body, thereby speeding up the construction progress. The setting of the buffer groove 304 can prevent the motor 102 from being turned off in time and excessively pushing the baffle 301 to cause it to break.

[0025] In this embodiment: the lifting mechanism includes a jack 201 arranged on a slide 203, the upper end of the jack 201 is connected to a top plate 202, a support column is welded to the lower side of the top plate 202, a fixed plate 204 is installed at the lower end of the support column, and a buffer groove 304 is provided on the fixed plate 204 for a prompt rod 303 to pass through, and the prompt rod 303 penetrates through the upper side of the fixed plate 204 and extends out. When working, the jack 201 is turned on to control the up and down displacement of the pressing mechanism below for detection.

[0026] In this embodiment: the pressing mechanism includes a first pressing plate 402 and a second pressing plate 403 which are arranged relatively to each other, and an opposing pressing plate 401 which is arranged corresponding to the baffle 301. Hydraulic cylinders are fixed on the first pressing plate 402, the second pressing plate 403, the opposing pressing plate 401 and the fixing seat 302. The baffle 301 is in gap contact with the movable rod of the corresponding hydraulic cylinder. The horizontal height of the baffle 301 is staggered with the first pressing plate 402. The first pressing plate 402 is horizontally aligned with the second pressing plate 403. The baffle 301 is horizontally aligned with the opposing pressing plate 401. When working, the pressing mechanism is controlled to move downward by the jack 201, so that the first pressing plate 402 and the second pressing plate 403 reach the pile body detection position. At this time, the hydraulic cylinder is started to press it with the surface of the pile body. The arrangement of the opposing pressing plate 401 reduces the unilateral uneven force on the pile body during detection, and the experimental data is more accurate and reliable.

[0027] The working principle and use process of the utility model are as follows: during construction, the device is hoisted to the top of the pile foundation by a crane and slowly dropped, the approximate position is adjusted by the slide 203, the motor 102 is turned on, the screw 103 is rotated, and the slide 203 is driven to move along the slide groove, when the baffle 301 contacts the pile body, the pressing plate is compressed, driving the push block 305 to move and contact the limit block 307, the limit block 307 drives the prompt rod 303 to move along the limit slide rail 306, and when the prompt rod 303 extending from the top moves along the buffer groove 304, it means that the baffle 301 has completely contacted the pile body, the motor 102 can be turned off, and the device can be lowered for detection. The setting of the prompt rod 303 can enable the motor 102 to be turned on during construction The pile body can be aligned by closing it once, which speeds up the construction progress. The setting of the buffer groove 304 can prevent the motor 102 from being closed in time and pushing the baffle 301 excessively to cause it to break. Then, the jack 201 is opened to control the downward displacement of the first pressing plate 402 and the second pressing plate 403 below, so that the first pressing plate 402 and the second pressing plate 403 reach the pile body detection position. At this time, the hydraulic cylinder is started to press it with the surface of the pile body, and at the same time, the hydraulic cylinder behind the opposite pressing plate 401 and the hydraulic cylinder behind the baffle 301 are opened. Then, the jack 201 is started to rise and the pull-out test of the pile foundation is started. The setting of the opposite pressing plate 401 reduces the unilateral uneven force on the pile body during the test, and the experimental data is more accurate and reliable.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A pile foundation pull-out detection device, comprising a frame (101), and also comprising a slide groove arranged on one side of the frame (101), characterized in that: A lead screw (103) is arranged in the slide groove, one end of the lead screw (103) is connected to a motor (102), a slide seat (203) is installed on the lead screw (103), a lifting mechanism is connected to the slide seat (203), a pressing mechanism is installed below the lifting mechanism, a limiting mechanism is installed on one side of the lifting mechanism, the limiting mechanism comprises a baffle (301), a fixed seat (302) is arranged on one side of the baffle (301), a pressing plate inserted into the fixed seat (302) is fixed on one side of the fixed seat (302), and the pressing plate is also fixed on the other side of the fixed seat (302). A first return spring is arranged at one end, a pushing block (305) is installed on the upper side of the pressing plate, a buffer groove (304) is opened on the upper side of the fixing seat (302), a prompt rod (303) is arranged in the buffer groove (304), a limiting slide rail (306) is arranged on the inner wall of the buffer groove (304), a slide rod is slidably connected in the limiting slide rail (306), the slide rod is welded to the prompt rod (303), a limiting block (307) is arranged at the lower end of the prompt rod (303), and a second return spring is arranged on one side of the limiting block (307).

2. A pile foundation pull-out detection device according to claim 1, characterized in that: The lifting mechanism comprises a jack (201) arranged on the slide seat (203), the upper end of the jack (201) is connected to a top plate (202), a support column is welded to the lower side of the top plate (202), a fixing plate (204) is installed at the lower end of the support column, and a buffer groove (304) through which the prompt rod (303) passes is provided on the fixing plate (204).

3. A pile foundation pull-out detection device according to claim 1, characterized in that: The pressing mechanism comprises a first pressing plate (402) and a second pressing plate (403) which are arranged opposite to each other, and an opposing pressing plate (401) which is arranged corresponding to the baffle (301); a hydraulic cylinder is fixed on the first pressing plate (402), the second pressing plate (403), the opposing pressing plate (401) and the fixing seat (302).

4. A pile foundation pull-out detection device according to claim 3, characterized in that: The baffle (301) is in gap contact with the movable rod of the corresponding hydraulic cylinder.

5. A pile foundation pull-out detection device according to claim 3, characterized in that: The horizontal height of the baffle plate (301) is staggered with that of the first pressing plate (402), the first pressing plate (402) is horizontally aligned with the second pressing plate (403), and the baffle plate (301) is horizontally aligned with the opposing pressing plate (401).

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