Improved mechanical grouting plug

Abstract

The utility model discloses an improved mechanical grouting plug, which relates to the field of building grouting and comprises a grouting pipe, a push ring, a push handle, a lock nut mounted at one end of the grouting pipe, the push ring in threaded connection with the other end of the grouting pipe, and a sleeve sleeved outside the grouting pipe and connected with the push ring. The annular gaskets are arranged at the two ends of the rubber plugs; the rolling bearing is arranged between the sleeve and the gaskets; the ball valve is connected with the end, provided with the pushing and pressing ring, of the grouting pipe; the second connector is connected with the ball valve; according to the utility model, the service life of the grouting plug can be prolonged by improving the existing mechanical grouting plug.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building grouting, in particular to an improved mechanical grouting plug. BACKGROUND

[0002] Pile end post grouting process is widely used in cast-in-place pile construction, through the grouting pipe pre-set in the pile body and the pile end, pile side grouting valve connected with it inject cement slurry, so that the pile end, pile side soil (including sediment and mud skin) is reinforced, thereby improving the single pile bearing capacity and reducing settlement.

[0003] The traditional pile end post grouting process is mostly welding wire head grouting process, which has slow construction period, difficult to guarantee the quality of welding wire head and back grouting problem after grouting.

[0004] In order to solve the problem of traditional pile end, mechanical grouting plug is currently used, the structure of mechanical grouting plug includes grouting pipe, sleeve, push handle, grouting plug, etc., the sleeve is located outside the grouting pipe, by rotating the push handle, the sleeve is displaced downward, and then the radial extrusion grouting plug makes the grouting plug expand horizontally, the position of mechanical grouting plug is fixed through the close contact of the horizontal expansion of grouting plug with the hole wall, at the same time, the sealing between grouting plug and hole wall is realized, and then the grouting pipe can be used to inject grouting; after grouting is completed, the push handle is reversed, the sleeve is displaced upward, the expanded grouting plug is separated from the hole wall and returns to the original position, and the mechanical grouting plug can be taken out. Mechanical grouting plug can be recycled, but the material of grouting plug is deformable material, mostly rubber, which is easy to deform after repeated extrusion expansion and rebound, and in actual use, the grouting plug is usually provided with multiple grouting plugs, the grouting plug at the upper end is subjected to greater pulling force, which shortens its service life, so that the grouting plug appears grouting leakage during grouting, or the grouting plug cannot be normally separated from the hole wall when the push handle is reversed, and the mechanical grouting plug cannot be normally taken out from the hole. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of prior art, providing an improved mechanical grouting plug, which can prolong the service life of grouting plug by improving the existing mechanical grouting plug.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides an improved mechanical grouting plug, which comprises a grouting pipe, a pushing ring, a pushing handle, a lock nut mounted on one end of the grouting pipe, the pushing ring threadedly connected to the other end of the grouting pipe, a sleeve pipe sleeved on the outside of the grouting pipe and connected to the pushing ring, a plurality of rubber plugs connected in series below the sleeve pipe and sleeved on the outside of the grouting pipe, annular gaskets arranged at both ends of the rubber plugs, a rolling bearing arranged between the sleeve pipe and the gaskets, a ball valve connected to one end of the grouting pipe provided with the pushing ring, a second connector connected to the ball valve, and a plurality of springs arranged between the rubber plugs and the sleeve pipe.

[0008] Further, the outer diameter of the gasket is larger than the outer diameter of the rubber plug, and the inner diameter of the gasket is smaller than the outer diameter of the rubber plug.

[0009] Further, the three rubber plugs are a first rubber plug close to the rolling bearing, a third rubber plug close to the lock nut, and a second rubber plug between the first rubber plug and the third rubber plug.

[0010] Further, the three gaskets are a first gasket connected to the rolling bearing and the first rubber plug, a second gasket connected to the first rubber plug and the second rubber plug, and a third gasket connected to the second rubber plug and the third rubber plug.

[0011] Further, the two ends of the spring are arranged on the first gasket and the lock nut, respectively.

[0012] Another spring arrangement mode of the utility model is that springs are arranged between the first gasket and the second gasket, between the second gasket and the third gasket, and between the third gasket and the lock nut.

[0013] Further, one end of the grouting pipe provided with the pushing ring is connected to a first connector, a connecting pipe is arranged in connection with the first connector, the ball valve is arranged on the connecting pipe, and the end of the connecting pipe is connected to the second connector.

[0014] Further, an elbow is arranged on the connecting pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The grouting device provided by the utility model has a simple structure, the sleeve pipe and the pushing ring are connected, when the device needs to be taken out, the pushing handle is reversely rotated, the sleeve pipe and the pushing ring are synchronously rotated and upwardly displaced, the rolling bearing is driven to move upwardly, the rolling bearing is connected to the gasket, and the rubber plug is connected to the gasket, so when the sleeve pipe moves upwardly, the gasket is driven to slide upwardly along the grouting pipe, the first rubber plug is driven to move radially and rebound, and the remaining two rubber plugs are still clamped in the holes, the utility model is provided with springs between the rubber plugs and the sleeve pipe, the three rubber plugs can rebound simultaneously under the rebounding action of the springs, are uniformly stressed, and the service life of the rubber plug is prolonged. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall device provided by this utility model;

[0018] Figure 2 Partial anatomical diagram of the device provided by this utility model.

[0019] The corresponding names of the attached figures are as follows: 1-ball valve, 2-connecting pipe, 3-elbow, 4-first connector, 5-push handle, 6-rolling bearing, 7-grouting pipe, 8-sleeve, 9-gasket, 10-rubber plug, 11-lock nut, 12-push ring, 13-second connector, 14-spring, 15-first gasket, 16-second gasket, 17-third gasket. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0021] Example 1

[0022] like Figure 1 As shown, this embodiment provides an improved mechanical grouting plug, including a grouting pipe 7. One end of the grouting pipe 7 is fitted with a lock nut 11, and the other end is threadedly connected to a push ring 12. The thread at one end of the grouting pipe 7 with the push ring 12 is relatively long. A push handle 5 is symmetrically fixedly connected to the side of the push ring 12. The push handle 5 can be rotated to make the push ring 12 rotate at the thread on the grouting pipe 7 to achieve displacement. In addition, a sleeve 8 and a rubber plug 10 are connected in series outside the grouting pipe 7. Three rubber plugs 10 are provided. A gasket 9 is provided between two adjacent rubber plugs 10 and between a rubber plug 10 and a sleeve 8. The outer diameter of the gasket 9 is larger than that of the rubber plug 10, and the inner diameter is smaller than that of the rubber plug 10. One end of the sleeve 8 is connected to the push ring 12, and the sleeve 8 has an internal thread. While the push ring 12 rotates under the action of the push handle 5, the sleeve 8 rotates synchronously. The other end of the sleeve 8 is equipped with a rolling bearing 6. The rolling bearing 6 includes an outer ring, an inner ring, and rolling elements located between the inner and outer rings. The sleeve 8 is connected to the inner ring of the rolling bearing 6, and the gasket between the rubber plug 10 and the sleeve 8 is connected to the outer ring of the rolling bearing 6. In actual use, by rotating the push handle 5, the push ring 12 moves closer to the lock nut 11. Under the action of the sleeve 8 and the rolling bearing 6, the rubber plug 10 expands laterally, squeezing the inner wall of the hole and making close contact with it. During this process, the gasket 9 ensures that the squeezing force from the sleeve 8 is applied more evenly to the rubber plug 10, causing multiple rubber plugs 10 to expand.

[0023] Further, in the embodiment, the threaded end of the grouting pipe 7 is connected with the connecting pipe 2 through the first joint 4, the ball valve 1 is connected with the connecting pipe 2, and the end of the connecting pipe 2 is connected with the second joint 13, which is used to be connected with the pipe outlet of the grouting equipment.

[0024] In the actual construction process, the diameters of each hole to be grouted are different, and the structural materials of different holes are also different. Therefore, the rubber plugs will expand to different degrees in different holes. When the rubber plug is used for a long time, the rubber plug cannot return to the normal position after expansion, and it is easy to be stuck in the hole after grouting. In order to avoid the above problems, a plurality of springs 14 are arranged between the rubber plug 10 and the sleeve 8, as shown in the figure. The gaskets 9 are sequentially named as the first gasket 15, the second gasket 16, and the third gasket 17 from top to bottom. The two ends of the spring 14 are arranged on the first gasket 15 and the lock nut 11, respectively. Figure 2

[0025] In the use process of the grouting device provided in the embodiment, one end of the grouting device provided with the lock nut is put into the hole and placed to a suitable depth, then the second joint is connected with the pipe outlet of the grouting equipment, the push handle is rotated to move the push ring and the bearing towards the rubber plug, the rubber plug is squeezed under the action of the gasket, the rubber plug expands to squeeze the inner wall of the hole, the grouting device is fixed in the hole, and the grouting device and the hole are sealed, so that the grouting operation can be performed. After grouting is completed, the push handle is rotated in the reverse direction, and the rubber plug returns to the original position under the spring rebounding action and the rubber rebounding action, so that the grouting device can be taken out and recycled. In the embodiment, the sleeve is connected with the push ring, and when the push handle is rotated in the reverse direction, the sleeve and the push ring are synchronously rotated and upwardly displaced, which drives the rolling bearing to move upwardly. Since the outer ring of the rolling bearing is connected with the gasket, and the rubber plug is arranged in connection with the gasket, when the sleeve moves upwardly, the gasket is driven to slide upwardly along the grouting pipe, and then the first expanded rubber plug is driven to move radially and rebound, and the remaining two rubber plugs are still stuck in the hole. In the embodiment, since the spring is arranged between the rubber plug 10 and the sleeve 8, the three rubber plugs can rebound simultaneously under the spring rebounding action, and are uniformly stressed, so that the service life of the rubber plug is prolonged.

[0026] Embodiment 2

[0027] On the basis of the embodiment 1, in order to realize various grouting operations in different environments, the bend 3 of 90° is arranged on the connecting pipe 2. The spring 14 is arranged between the first gasket 15 and the second gasket 16, between the second gasket 16 and the third gasket 17, and between the third gasket 17 and the lock nut 11.

[0028] ​The above embodiment is only one of the preferred embodiments of the present application, and should not be used to limit the protection scope of the present application, but any insignificant modification or polishing made in the main design idea and spirit of the present application, the technical problems solved are still consistent with the present application, and should be included in the protection scope of the present application.

Claims

1. An improved mechanical grout plug comprising a grout tube (7), a push ring (12), a push handle (5), characterized in that, The device further comprises a lock nut (11) installed at one end of the grouting pipe (7), a push ring (12) threadedly connected to the other end of the grouting pipe (7), a sleeve (8) sleeved on the grouting pipe (7) and connected to the push ring (12), a plurality of rubber plugs (10) connected in series below the sleeve (8) and sleeved on the grouting pipe (7), annular gaskets (9) arranged at both ends of the rubber plugs (10), a rolling bearing (6) arranged between the sleeve (8) and the gaskets (9), a ball valve (1) connected to one end of the grouting pipe (7) provided with the push ring (12), a second connector (13) connected to the ball valve (1), and a plurality of springs (14) vertically installed between the rubber plugs (10) and the sleeve (8).

2. An improved mechanical tampon according to claim 1, characterized in that, The gaskets (9) have an outer diameter greater than that of the rubber plugs (10) and an inner diameter less than that of the rubber plugs (10).

3. An improved mechanical tampon according to claim 2, characterized in that, The rubber plugs (10) are arranged in three, i.e., a first rubber plug close to the rolling bearing (6), a third rubber plug close to the lock nut (11), and a second rubber plug between the first rubber plug and the third rubber plug.

4. An improved mechanical tampon according to claim 3, characterized in that, The gaskets (9) are arranged in three, i.e., a first gasket connected to the rolling bearing (6) and the first rubber plug, a second gasket connected to the first rubber plug and the second rubber plug, and a third gasket connected to the second rubber plug and the third rubber plug.

5. An improved mechanical tampon according to claim 4, characterized in that The two ends of the springs (14) are arranged on the first gasket (15) and the lock nut (11), respectively.

6. An improved mechanical tampon according to claim 4, characterized in that, The springs (14) are arranged between the first gasket (15) and the second gasket (16), between the second gasket (16) and the third gasket (17), and between the third gasket (17) and the lock nut (11).

7. An improved mechanical tampon according to claim 5 or 6, characterised in that, One end of the grouting pipe (7) provided with the push ring (12) is connected to a first connector (4), a connecting pipe (2) is arranged in connection with the first connector (4), the ball valve (1) is arranged on the connecting pipe (2), and the other end of the connecting pipe (2) is connected to the second connector (13).

8. An improved mechanical tampon according to claim 7, characterized in that, An elbow (3) is arranged on the connecting pipe (2).

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