Grabbing mechanism for concrete impermeability test

Abstract

A grabbing mechanism for a concrete impermeability test is characterized in that a middle cylinder is formed on the upper portion of a base plate, a threaded rod is in threaded connection with the interior of the middle cylinder, the top end of the threaded rod extends to the position above the middle cylinder, and the bottom end of the threaded rod is located below the base plate; a plurality of movable grooves are evenly formed in the edge of the upper side of the base plate, and each movable groove is hinged to a pull rod. A clamping plate is arranged at the bottom end of the pull rod; a guide ring is connected to the side part of the clamping plate; the top end of the pull rod is provided with an extrusion plate, the periphery of the middle cylinder is in threaded connection with a pressing sleeve, and the upper end face of the extrusion plate makes contact with the bottom face of the pressing sleeve. A control sleeve is arranged on the upper portion of the threaded rod, a control sleeve is connected to one side of the control sleeve, a long channel is formed in the control sleeve, and an extension rod is movably inserted into the long channel. According to the utility model, the detection cylinder can be quickly clamped out of the pressure testing machine, the taking-out efficiency is high, the operation is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete test, and particularly relates to a grabbing mechanism for concrete impermeability test. Background Technique

[0002] The concrete impermeability test refers to the test for detecting the waterproof performance of concrete. This test is very important in concrete engineering and is mainly used to evaluate the durability and reliability of concrete. In the impermeability test, the concrete structure is placed into the test cylinder for the test. The test cylinder and the concrete structure inside it are placed together in the pressure testing machine, and then the impermeability pressure is applied to the concrete structure by the pressure testing machine. When the impermeability pressure reaches the specified value and the concrete structure still does not leak, the test is qualified.

[0003] At present stage, after the concrete impermeability test is completed, the test cylinder needs to be taken out from the pressure testing machine by tools. The operation process of traditional tools is complex, time-consuming and laborious, and the test cylinder cannot be quickly clamped out from the pressure testing machine. How to improve the extraction efficiency of the test cylinder after the concrete impermeability test has practical application significance. Content of the Utility Model

[0004] For this reason, the utility model provides a grabbing mechanism for concrete impermeability test, which solves the problems of low extraction efficiency, complex operation process, time-consuming and laborious of the test cylinder after the concrete impermeability test in the traditional technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a grabbing mechanism for concrete impermeability test, including a base plate, an intermediate cylinder is formed on the upper part of the base plate, a threaded rod is screwed inside the intermediate cylinder, the top end of the threaded rod extends above the intermediate cylinder, and the bottom end of the threaded rod is below the base plate;

[0006] A plurality of movable grooves are evenly arranged on the upper side edge of the base plate, and a pull rod is hinged to each movable groove; a clamping plate is arranged at the bottom end of the pull rod, a guide ring is connected to the side part of the clamping plate; an extrusion plate is arranged at the top end of the pull rod, and a pressing sleeve is threadedly connected to the periphery of the intermediate cylinder, and the upper end surface of the extrusion plate is in contact with the bottom surface of the pressing sleeve;

[0007] A control sleeve is arranged on the upper part of the threaded rod, a control cylinder is connected to one side of the control sleeve, a long channel is arranged inside the control cylinder, and an extension rod is movably inserted inside the long channel.

[0008] As a preferred scheme of the grabbing mechanism for concrete impermeability test, a pull ring is fixedly connected to the top end of the threaded rod, and the pull ring is arranged in a vertical state.

[0009] As a preferred solution for the gripping mechanism in the concrete impermeability test, a locking bolt is threadedly connected to the side of the control sleeve, a plurality of locking holes are formed in the side of the extension rod, and the locking bolt is inserted into one of the locking holes in the long channel.

[0010] As a preferred solution for the gripping mechanism in the concrete impermeability test, a grip is provided at one end of the extension rod away from the control sleeve.

[0011] As a preferred solution for the gripping mechanism in the concrete impermeability test, it further includes a backing plate, and the bottom end of the threaded rod is rotatably connected to the backing plate through a rotating column.

[0012] As a preferred solution for the gripping mechanism in the concrete impermeability test, an elastic block is provided on the lower side of the top of the pull rod, and the bottom of the elastic block is in movable contact with the inner bottom wall of the movable groove.

[0013] As a preferred solution for the gripping mechanism in the concrete impermeability test, the clamping plate is L-shaped, and a shovel-shaped slope is formed at the bottom edge of the clamping plate.

[0014] As a preferred solution for the gripping mechanism in the concrete impermeability test, the clamping plate is provided with a recovery groove, a limiting block is rotatably connected in the recovery groove through a torsion spring, and the limiting block is in movable contact with the threaded hole on the test cylinder to be gripped.

[0015] The present utility model has the following advantages: An intermediate cylinder is formed on the upper part of the base plate, a threaded rod is threadedly connected inside the intermediate cylinder, the top end of the threaded rod extends above the intermediate cylinder, and the bottom end of the threaded rod is below the base plate; a plurality of movable grooves are evenly formed on the upper side edge of the base plate, and each movable groove is hinged with a pull rod; a clamping plate is provided at the bottom end of the pull rod, and a guide ring is connected to the side of the clamping plate; a pressing plate is provided at the top end of the pull rod, a pressing sleeve is threadedly connected to the periphery of the intermediate cylinder, and the upper end surface of the pressing plate is in contact with the bottom surface of the pressing sleeve; a control sleeve is provided on the upper part of the threaded rod, a control sleeve is connected to one side of the control sleeve, a long channel is formed inside the control sleeve, and an extension rod is movably inserted inside the long channel. The present utility model can quickly clamp out the test cylinder from the pressure testing machine, with high extraction efficiency, simple operation and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0017] Figure 1Schematic three-dimensional structure diagram of the concrete impermeability test grasping mechanism provided in the embodiment of the present utility model;

[0018] Figure 2 Schematic cross-sectional structure diagram of the concrete impermeability test grasping mechanism provided in the embodiment of the present utility model;

[0019] Figure 3 Provided in the embodiment of the present utility model Figure 2 Partial enlarged structure diagram of part A therein;

[0020] Figure 4 Provided in the embodiment of the present utility model Figure 2 Partial enlarged structure diagram of part B therein;

[0021] Figure 5 Provided in the embodiment of the present utility model Figure 2 Partial enlarged structure diagram of part C therein;

[0022] Figure 6 Schematic diagram of the working state of the concrete impermeability test grasping mechanism provided in the embodiment of the present utility model;

[0023] Figure 7 Provided in the embodiment of the present utility model Figure 6 Partial enlarged structure diagram of part D therein.

[0024] In the figure, 1, base plate; 2, movable groove; 3, pull rod; 4, limiting ring; 5, clamping plate; 6, threaded rod; 7, abutting plate; 8, middle cylinder; 9, pressing sleeve; 10, control sleeve; 11, control sleeve; 12, locking bolt; 13, extension rod; 14, handle; 15, pull ring; 16, extrusion plate; 17, elastic block; 18, screwed column; 19, locking hole; 20, detection cylinder; 21, threaded hole; 22, limiting block. Detailed implementation manners

[0025] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Refer to Figure 1 , figure, Figure 3 , Figure 4 and Figure 5, an embodiment of the utility model provides a concrete impermeability test grasping mechanism, which includes a base plate 1. An intermediate cylinder 8 is formed on the upper part of the base plate 1. A threaded rod 6 is screwed inside the intermediate cylinder 8. The top end of the threaded rod 6 extends above the intermediate cylinder 8, and the bottom end of the threaded rod 6 is below the base plate 1;

[0027] Among them, more than three movable slots 2 are evenly opened on the upper side edge of the base plate 1, and a pull rod 3 is hinged to each movable slot 2; a clamping plate 5 is arranged at the bottom end of the pull rod 3, and a guide ring is connected to the side part of the clamping plate 5; an extrusion plate 16 is arranged at the top end of the pull rod 3, and a pressing sleeve 9 is threadedly connected to the periphery of the intermediate cylinder 8, and the upper end surface of the extrusion plate 16 is in contact with the bottom surface of the pressing sleeve 9;

[0028] Among them, a control sleeve 10 is arranged on the upper part of the threaded rod 6, a control sleeve 11 is connected to one side of the control sleeve 10, a long channel is opened inside the control sleeve 11, and an extension rod 13 is movably inserted inside the long channel.

[0029] In this embodiment, a pull ring 15 is fixedly connected to the top end of the threaded rod 6, and the pull ring 15 is arranged in a vertical state. The pull ring 15 is convenient for carrying the concrete impermeability test grasping mechanism by hand for transfer, and the rotation of the threaded rod 6 can also be controlled through the pull ring 15.

[0030] In this embodiment, a locking bolt 12 is threadedly connected to the side part of the control sleeve 11, a plurality of locking holes 19 are opened on the side part of the extension rod 13, and the locking bolt 12 is inserted into one of the locking holes 19 in the long channel; a handle 14 is arranged at the end of the extension rod 13 away from the control sleeve 11.

[0031] Specifically, the control sleeve 11 and the extension rod 13 are fixed together through the locking bolt 12 and the locking holes 19. The depth of the extension rod 13 inserted into the control sleeve 11 is different, and different positions of the locking holes 19 can be used for locking. When the control sleeve 11 and the locking holes 19 are locked and fixed, the control sleeve 11 is rotated by using the handle 14, the control sleeve 11 drives the control sleeve 10, and then drives the threaded rod 6 to rotate to adjust the up and down movement of the threaded rod 6.

[0032] In this embodiment, a bottom plate 7 is further included, and the bottom end of the threaded rod 6 is rotatably connected to the bottom plate 7 through a rotating column 18. When the bottom plate 7 at the bottom end of the threaded rod 6 continuously moves downward until the bottom plate 7 touches the bearing surface of the pressure testing machine, after the bottom plate 7 touches the bearing surface of the pressure testing machine, the rotating column 18 at the bottom of the threaded rod 6 can rotate smoothly relative to the bottom plate 7 without being restricted by the friction between the bottom plate 7 and the bearing surface.

[0033] In this embodiment, an elastic block 17 is provided at the lower side of the top of the pull rod 3, and the bottom of the elastic block 17 is in active contact with the inner bottom wall of the movable groove 2. The elastic block 17 is made of hydrogenated nitrile rubber, and the elastic block 17 can prevent the pull rod 3 from hard collision with the movable groove 2.

[0034] See also Figure 6 and Figure 7 In this embodiment, the card plate 5 is L-shaped, and a shovel-shaped slope is formed on the bottom edge of the card plate 5; the card plate 5 is provided with a recovery groove, and a limit block 22 is screwed in the recovery groove through a torsion spring, and the limit block 22 is in active contact with the threaded hole 21 on the detection cylinder 20 to be grasped.

[0035] Specifically, the shovel-shaped slope of the clamping plate 5 shovels to the bottom of the detection tube 20. When the limit block 22 reaches the bottom of the threaded hole 21 on the detection tube 20, the torsion spring makes the limit block 22 bounce up and enter the threaded hole 21, and the compression sleeve 9 is screwed on the base plate 1. The compression sleeve 9 applies force to the extrusion plate 16, and the extrusion plate 16 makes the pull rod 3 gather toward the middle, so that the pull rod 3 is clamped and fixed in shape. As the threaded rod 6 continues to rotate, the guide ring on the pull rod 3 and the clamping plate 5 will move the detection tube 20 upward until the detection tube 20 is taken out.

[0036] The method of using the utility model is as follows:

[0037] Place the substrate 1 on the top of the detection tube 20, and connect the guide ring on the pull rod 3 with the threaded column on the bearing surface of the pressure testing machine. The threaded column and the guide ring are used to limit and guide the pull rod 3 and the substrate 1. The shovel-shaped slope of the clamping plate 5 shovels to the bottom of the detection tube 20. When the limit block 22 reaches the bottom of the threaded hole 21, the torsion spring makes the limit block 22 bounce up and enter the threaded hole 21. Tighten the clamping sleeve 9 on the substrate 1, and apply force to the extrusion plate 16 through the clamping sleeve 9. The pull rod 3 is retracted to the middle through the extrusion plate 16, so that the pull rod 3 is clamped and the shape is fixed.

[0038] Next, by utilizing the handle 14, the extension rod 13 and the control sleeve 11 to generate torque and manipulate the handle 14 to rotate the threaded rod 6. During the rotation of the threaded rod 6, the abutment plate 7 at the bottom end of the threaded rod 6 continuously moves downward until the abutment plate 7 contacts the bearing surface of the pressure testing machine. As the threaded rod 6 continuously rotates, the guide ring and the clamping plate 5 on the pull rod 3 will move the detection tube 20 upward until the detection tube 20 is taken out.

[0039] To sum up, an intermediate tube 8 is formed on the upper part of the base plate 1 of the utility model, and a threaded rod 6 is screwed on the internal thread of the intermediate tube 8, the top end of the threaded rod 6 extends to the top of the intermediate tube 8, and the bottom end of the threaded rod 6 is below the base plate 1; a number of movable grooves 2 are evenly opened on the upper edge of the base plate 1, and each movable groove 2 is hinged with a pull rod 3; a clamping plate 5 is provided at the bottom end of the pull rod 3, and a guide ring is connected to the side of the clamping plate 5; an extrusion plate 16 is provided on the top of the pull rod 3, and a clamping sleeve 9 is threadedly connected to the outer periphery of the intermediate tube 8, and the upper end surface of the extrusion plate 16 is in contact with the bottom surface of the clamping sleeve 9; a control sleeve 10 is provided on the upper part of the threaded rod 6, and a control sleeve 11 is connected to one side of the control sleeve 10, and a long channel is opened inside the control sleeve 11, and an extension rod 13 is movably inserted inside the long channel. The control sleeve 11 and the extension rod 13 are fixed together by the locking bolt 12 and the locking hole 19. The extension rod 13 is inserted into the control sleeve 11 to different depths, and can be locked by using the locking holes 19 at different positions. After the control sleeve 11 and the locking hole 19 are locked and fixed, the control sleeve 11 is rotated by the handle 14, and the control sleeve 11 drives the control sleeve 10, and then drives the threaded rod 6 to rotate to adjust the up and down movement of the threaded rod 6. When the plate 7 at the bottom of the threaded rod 6 moves downward continuously until the plate 7 contacts the bearing surface of the pressure tester, when the plate 7 contacts the bearing surface of the pressure tester, the screw-on column 18 at the bottom of the threaded rod 6 can rotate smoothly relative to the plate 7 without being restricted by the friction between the plate 7 and the bearing surface. The material of the elastic block 17 is hydrogenated nitrile rubber, and the elastic block 17 can prevent the pull rod 3 from having a hard collision with the movable groove 2. The shovel-shaped slope of the clamping plate 5 shovels to the bottom of the detection tube 20. When the limit block 22 reaches the bottom of the threaded hole 21 on the detection tube 20, the torsion spring makes the limit block 22 bounce up and enter the threaded hole 21, and the compression sleeve 9 is screwed on the base plate 1. The compression sleeve 9 applies force to the extrusion plate 16, and the extrusion plate 16 makes the pull rod 3 gather toward the middle, so that the pull rod 3 is clamped and fixed in shape. With the continuous rotation of the threaded rod 6, the guide ring and the clamping plate 5 on the pull rod 3 will move upward with the detection tube 20 until the detection tube 20 is taken out. The utility model can quickly clamp and take out the detection tube 20 from the pressure testing machine, with high removal efficiency, simple operation and convenient use.

[0040] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A concrete impermeability test grabbing mechanism, characterized in that It includes a substrate (1), an intermediate cylinder (8) is formed on the upper part of the substrate (1), a threaded rod (6) is screwed inside the intermediate cylinder (8), the top end of the threaded rod (6) extends above the intermediate cylinder (8), and the bottom end of the threaded rod (6) is below the substrate (1); A plurality of movable grooves (2) are evenly formed on the upper side edge of the substrate (1), and a pull rod (3) is hinged to each movable groove (2); a clamping plate (5) is arranged at the bottom end of the pull rod (3), and a guide ring is connected to the side part of the clamping plate (5); an extrusion plate (16) is arranged at the top end of the pull rod (3), and a compression sleeve (9) is threadedly connected to the periphery of the intermediate cylinder (8), and the upper end surface of the extrusion plate (16) is in contact with the bottom surface of the compression sleeve (9); A control sleeve (10) is arranged on the upper part of the threaded rod (6), a control sleeve (11) is connected to one side of the control sleeve (10), a long channel is formed inside the control sleeve (11), and an extension rod (13) is movably inserted into the long channel; 2. The concrete impermeability test grabbing mechanism according to claim 1, wherein, A pull ring (15) is fixedly connected to the top end of the threaded rod (6), and the pull ring (15) is arranged in a vertical state; 3. The concrete impermeability test grabbing mechanism according to claim 1, characterized in that, A locking bolt (12) is threadedly connected to the side part of the control sleeve (11), a plurality of locking holes (19) are formed in the side part of the extension rod (13), and the locking bolt (12) is inserted into one of the locking holes (19) in the long channel; 4. The concrete impermeability test grasping mechanism according to claim 3, characterized in that, A handle (14) is arranged at one end of the extension rod (13) away from the control sleeve (11); 5. The concrete impermeability test grabbing mechanism according to claim 1, characterized in that, It further includes a resisting plate (7), and the bottom end of the threaded rod (6) is rotatably connected to the resisting plate (7) through a screwing column (18); 6. The concrete impermeability test grabbing mechanism according to claim 1, characterized in that, An elastic block (17) is arranged on the lower side of the top of the pull rod (3), and the bottom of the elastic block (17) is in movable contact with the inner bottom wall of the movable groove (2); 7. The concrete impermeability test grabbing mechanism according to claim 1, characterized in that, The clamping plate (5) is L-shaped, and a shovel-shaped slope is formed at the bottom edge of the clamping plate (5); 8. The concrete impermeability test grabbing mechanism according to claim 1, characterized in that A recovery groove is arranged on the clamping plate (5), a limiting block (22) is rotatably connected in the recovery groove through a torsion spring, and the limiting block (22) is in movable contact with a threaded hole (21) on a detection cylinder (20) to be grabbed;

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