Hollow grouting anchor rod high-pressure grouting pump plastic screw

Abstract

The utility model relates to a hollow grouting anchor rod high-pressure grouting pump plastic screw which comprises a shaft body, and connecting blocks are arranged at the two ends of the shaft body. The spiral blade is spirally wound on the shaft body, and the side, used for pushing materials, of the section of a thread structure of the spiral blade is perpendicular to the peripheral wall of the shaft body; the connecting blocks are prisms, and a fastening assembly is arranged in one connecting block connected with the high-pressure grouting pump. The utility model relates to the technical field of plastic screws. According to the plastic screw of the high-pressure grouting pump of the hollow grouting anchor rod, the side, used for pushing materials, of the spiral structure section of the spiral blade is perpendicular to the peripheral wall of the shaft body, so that the spiral blade can apply horizontal pushing force to the materials when the spiral blade rotates to push the materials, the materials can be effectively prevented from being unloaded, and therefore the pushing efficiency of the plastic screw is improved, and the service life of the plastic screw is prolonged. And the power consumption of the high-pressure grouting pump is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic spiral, in particular to the plastic spiral of a high-pressure grouting pump for a hollow grouting anchor rod. Background Art

[0002] Grouting technology can be divided into two categories: static pressure grouting and high-pressure jet grouting. However, according to the action mechanism of the grout on the soil body, the grouting pressure of the geological conditions, the movement form of the grout, and the replacement method, etc., the grouting technology can be further divided into four categories: permeation grouting, splitting grouting, compaction grouting, and jet grouting.

[0003] In the prior art, during the grouting process, it is necessary to use a grouting pump to push the material into the mixing chamber for mixing, and then inject the mixed slurry into the building. The cross-section of the plastic spiral thread structure for pushing the material is usually a trapezoid with both sides inclined. This structure will cause the material to shift laterally under the push of the inclined surface when the plastic spiral pushes the material, resulting in the unloading of the thrust applied by the plastic spiral, affecting the pushing efficiency of the material, and thus increasing the energy consumption of the high-pressure grouting pump. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a plastic spiral of a high-pressure grouting pump for a hollow grouting anchor rod, so as to solve the technical problems mentioned in the above background art.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] The plastic spiral of the high-pressure grouting pump for the hollow grouting anchor rod includes a shaft body, and connection blocks are arranged at both ends thereof;

[0007] The spiral blade is spirally wound around the shaft body, and the cross-section of the thread structure of the spiral blade on the side for pushing the material is perpendicular to the outer peripheral wall of the shaft body;

[0008] The connection block is a prism, and a fastening component is arranged in one of the connection blocks connected to the high-pressure grouting pump;

[0009] The fastening component includes an expansion block, a pressing block, a buffer gasket, and an elastic member. The end face of the pressing block is reduced by three-quarters of the end face of the connection block in equal proportion. Expansion blocks are arranged at each side wall of the pressing block, and one side of the expansion block close to the connection block is hinged to the connection block;

[0010] One side of the pressing block close to the connection block is connected to the connection block through an elastic member, and a buffer gasket is fixedly connected to the side of the pressing block away from the connection block.

[0011] Further, an inclined angle is processed on the outer wall of the side of the pressing block close to the connection block, and an inclined surface fitting the inclined angle is processed on the side of the expansion block close to the inclined angle.

[0012] Furthermore, a permanent magnet is embedded at the bevel angle of the extrusion block, and a metal sheet for adsorbing the permanent magnet is embedded at the inclined surface of the expansion block.

[0013] Furthermore, the elastic member includes a slider, a connecting rod and a spring. A sliding groove is formed in the connecting block, and the slider is slidably arranged in the sliding groove. One side of the slider close to the extrusion block extends out of the connecting block and is fixedly connected to the extrusion block. A spring is arranged between the other side of the slider away from the extrusion block and the sliding groove.

[0014] Furthermore, a protective sleeve is fixedly connected to the outer sides of the spiral blade and the shaft body.

[0015] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0016] 1. For the plastic spiral of the high-pressure grouting pump of the hollow grouting bolt, by making the side of the cross-section of the spiral structure of the spiral blade for pushing materials perpendicular to the outer peripheral wall of the shaft body, the spiral blade can exert a horizontal thrust on the materials when rotating and pushing, which can effectively prevent the materials from unloading force, thereby improving the material pushing efficiency of the plastic spiral and further reducing the power consumption of the high-pressure grouting pump;

[0017] 2. For the plastic spiral of the high-pressure grouting pump of the hollow grouting bolt, through the arranged fastening component, when the buffer gasket is extruded, it pushes the extrusion block to extrude the expansion block, so that the expansion block opens as shown in the figure when being extruded, thereby abutting against the inner wall of the connection hole of the high-pressure grouting pump, which can improve the stability after the plastic spiral is installed and reduce the damage generated during the material pushing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0019] Figure 1 It is a schematic structural diagram of the plastic spiral of the high-pressure grouting pump of the hollow grouting bolt of the present utility model.

[0020] Figure 2 It is a schematic structural diagram of the cross-section of the thread structure of the plastic spiral of the high-pressure grouting pump of the hollow grouting bolt of the present utility model.

[0021] Figure 3 It is a schematic structural diagram of the fastening component in the plastic spiral of the high-pressure grouting pump of the hollow grouting bolt of the present utility model.

[0022] Figure 4 It is a schematic structural diagram of the fastening component in the plastic spiral of the high-pressure grouting pump of the hollow grouting bolt of the present utility model when it expands.

[0023] In the figure, 1 is the shaft body; 2 is the spiral blade; 3 is the connecting block; 4 is the fastening assembly; 41 is the expansion block; 42 is the extrusion block; 43 is the buffer gasket; 44 is the elastic member; 441 is the slider; 442 is the connecting rod; 443 is the spring; 5 is the bevel angle; 6 is the inclined plane; 7 is the permanent magnet; 8 is the metal sheet; 9 is the sliding groove; 10 is the protective sleeve. Specific embodiments

[0024] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0025] Embodiment:

[0026] Referring to Figure 1 - Figure 4 , the plastic spiral of the high-pressure grouting pump for the hollow grouting bolt disclosed by the present utility model includes a shaft body 1, and connecting blocks 3 are arranged at both ends thereof;

[0027] The spiral blade 2 is spirally wound around the shaft body 1, and the cross-section of the thread structure of the spiral blade 2 on the side for pushing the material is perpendicular to the outer peripheral wall of the shaft body 1;

[0028] The connecting block 3 is a prism, and a fastening assembly 4 is arranged in one of the connecting blocks 3 connected to the high-pressure grouting pump;

[0029] The fastening assembly 4 includes an expansion block 41, an extrusion block 42, a buffer gasket 43 and an elastic member 44. The end face of the extrusion block 42 is reduced by three-quarters of the end face of the connecting block 3 in equal proportion. Expansion blocks 41 are arranged at each side wall of the extrusion block 42, and the side of the expansion block 41 close to the connecting block 3 is hinged to the connecting block 3;

[0030] The side of the extrusion block 42 close to the connecting block 3 is connected to the connecting block 3 through an elastic member 44, and a buffer gasket 43 is fixedly connected to the side of the extrusion block 42 away from the connecting block 3.

[0031] In this embodiment, since the cross-section of the thread structure of the plastic spiral for pushing the material is usually a trapezoid with two inclined sides, this structure will cause the material to shift sideways under the push of the inclined plane when the plastic spiral pushes the material, resulting in the unloading of the thrust applied by the plastic spiral, affecting the pushing efficiency of the material, and thus increasing the energy consumption of the high-pressure grouting pump.

[0032] Therefore, observing Figure 1 and Figure 2 it can be found that the spiral blade 2 is spirally wound on the outer peripheral wall of the shaft body 1, and the side of the spiral structure cross-section of the spiral blade 2 for pushing the material is perpendicular to the outer peripheral wall of the shaft body 1, so that the spiral blade 2 applies a horizontal thrust to the material when rotating to push the material, which can effectively prevent the unloading of the material, thereby improving the pushing efficiency of the plastic spiral and further reducing the power consumption of the high-pressure grouting pump.

[0033] Since the plastic spiral needs to be connected to the high-pressure grouting pump and the mixing rod for mixing materials when in use, connecting blocks 3 are provided at both ends of the shaft body 1, and the connecting blocks 3 are made into prisms. When the shaft body 1 is connected to the high-pressure grouting pump and the mixing rod, the side walls of the prisms exert pressure on the inner walls of the connecting holes of the high-pressure grouting pump and the mixing rod when rotating, thereby ensuring the rotation stability of the plastic spiral after installation.

[0034] However, since the plastic spiral is an installed component and assembly tolerances are inevitably retained during industrial processing, a gap is generated when the plastic spiral is connected to the high-pressure grouting pump. As a result, when the high-pressure grouting pump is running, the connecting block 3 of the plastic spiral and the connecting hole of the high-pressure grouting pump shake due to the existence of the gap, causing the prism of the connecting block 3 to damage the inner wall of the connecting hole, thereby affecting the service life of the plastic spiral and the high-pressure grouting pump.

[0035] So observe Figure 1 and Figure 3 It can be found that a fastening assembly 4 is connected to the connecting block 3 where the plastic spiral is away from the pushing direction, so that when the connecting block 3 is connected to the high-pressure grouting pump, the buffer gasket 43 is squeezed to push the squeezing block 42 to squeeze the expansion block 41, so that the expansion block 41 is squeezed. Figure 4 As shown in the figure, it opens to contact the inner wall of the high-pressure grouting pump connection hole, which can improve the stability of the plastic spiral after installation and reduce the damage caused during the pushing operation.

[0036] When the plastic screw is pushing the material, the plastic screw will also be subjected to the reaction force exerted by the material, so that the plastic screw will generate pressure to squeeze the shaft of the high-pressure grouting pump during the pushing process, which will cause the shaft of the high-pressure grouting pump to move sideways and damage the bearing, thus affecting the service life of the high-pressure grouting pump. Figure 3 It can be found that an elastic member 44 is arranged between the connecting block 3 and the extrusion block 42, so that when the plastic spiral generates axial force, the elastic member 44 and the buffer gasket 43 can be used for buffering, thereby reducing the pressure applied to the rotating shaft of the high-pressure grouting pump, and effectively improving the service life of the high-pressure grouting pump. At the same time, the axial force generated by the plastic spiral can further enhance the pressure of the extrusion block 42 to squeeze the expansion block 41, and further improve the installation stability of the plastic spiral.

[0037] In a further preferred embodiment of the present invention, Figure 3 As shown, the outer wall of the extrusion block 42 on one side close to the connection block 3 is processed with a bevel 5, and the expansion block 41 on one side close to the bevel 5 is processed with a bevel 6 that fits the bevel 5;

[0038] The extrusion block 42 is located at the bevel 5 and is embedded with a permanent magnet 7 , and the expansion block 41 is located at the bevel 6 and is embedded with a metal sheet 8 for adsorption of the permanent magnet 7 .

[0039] In this embodiment, by setting the bevel 5, when the extrusion block 42 squeezes the expansion block 41, the bevel 5 is used to apply an outward force to the expansion block 41, so that the expansion block 41 is opened and the expansion block 41 contacts the inner wall of the high-pressure grouting pump connection hole. By processing the side of the expansion block 41 close to the bevel 5 with a bevel 6 that fits the bevel 5, the expansion block 41 can have a stronger guiding property when being squeezed, making it easier to open the expansion block 41.

[0040] Since the expansion block 41 is hinged with the connecting block 3 and is opened to contact the inner wall of the connecting hole of the high-pressure grouting pump during installation, the stability of the plastic spiral connection is improved. Therefore, the expansion block 41 naturally sags without the action of external force, which will make it necessary to close multiple expansion blocks 41 when connecting the plastic spiral to the high-pressure grouting pump, which will increase the difficulty of installation. Figure 3 It can be found that a permanent magnet 7 is embedded in the extrusion block 42 at the bevel 5, and a metal sheet 8 is embedded in the expansion block 41 at the bevel. The metal sheet 8 of the expansion block 41 can be adsorbed by the permanent magnet 7, so that the expansion block 41 actively fits on the outer wall of the extrusion block 42, which can effectively reduce the difficulty of installing the plastic spiral.

[0041] In a further preferred embodiment of the present invention, Figure 3 As shown, the elastic member 44 includes a slider 441, a connecting rod 442 and a spring 443. A slide groove 9 is provided in the connecting block 3. A slider 441 is slidably provided in the slide groove 9. The slider 441 extends out of the connecting block 3 from a side close to the extrusion block 42 and is fixedly connected to the extrusion block 42. A spring 443 is provided between the side of the slider 441 away from the extrusion block 42 and the slide groove 9.

[0042] In this embodiment, the slider 441 and the connecting rod 442 are provided to ensure that the extrusion block 42 and the connecting block 3 are stably connected, thereby preventing the extrusion block 42 from falling off and affecting the use of the plastic spiral.

[0043] By providing a spring 443 between the slider 441 and the slide groove 9, the elastic force of the spring 443 can be utilized to push the extrusion block 42 to remain away from the connection block 3 under normal conditions, so that the expansion block 41 is not squeezed but closed, which can make the plastic spiral more convenient to install and further improve the installation efficiency of the plastic spiral.

[0044] At the same time, the setting of the spring 443 can also absorb the force when the plastic spiral pusher is subjected to a reverse force, thereby reducing the axial force applied to the rotating shaft of the high-pressure grouting pump, thereby improving the protection effect of the high-pressure grouting pump.

[0045] In a further preferred embodiment of the present invention,Figure 2 As shown, a protective sleeve 10 is fixedly connected to the outside of the spiral blade 2 and the shaft body 1.

[0046] In this embodiment, by fixedly connecting the protective sleeve 10 to the outside of the spiral blade 2 and the shaft body 1, it can be used to provide protection for the shaft body 1 and the spiral blade 2, avoiding being scratched by directly contacting with the rough pulp water material, thereby effectively improving the service life of the plastic spiral.

[0047] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. Hollow grouting anchor high pressure grouting pump plastic spiral, characterized in that, It comprises a shaft body (1), both ends of which are provided with connection blocks (3); A spiral blade (2) is spirally wound around the shaft body (1), and a side of the spiral structure cross section of the spiral blade (2) used for pushing materials is perpendicular to the outer peripheral wall of the shaft body (1); The connection block (3) is a prism, and a fastening assembly (4) is arranged in one of the connection blocks (3) connected to the high-pressure grouting pump; The fastening assembly (4) comprises an expansion block (41), an extrusion block (42), a buffer gasket (43) and an elastic member (44); the end face of the extrusion block (42) is three-quarters smaller than the end face of the connection block (3); an expansion block (41) is arranged on each side wall of the extrusion block (42); and the expansion block (41) is hinged to the connection block (3) on a side close to the connection block (3); The side of the extrusion block (42) close to the connection block (3) is connected to the connection block (3) via an elastic member (44), and the side of the extrusion block (42) away from the connection block (3) is fixedly connected with a buffer pad (43).

2. The hollow grouting anchor high pressure grouting pump plastic screw according to claim 1 is characterized in that: The outer wall of the extrusion block (42) on one side close to the connection block (3) is processed with a bevel (5), and the expansion block (41) on one side close to the bevel (5) is processed with a slope (6) that fits the bevel (5).

3. The hollow grouting anchor high pressure grouting pump plastic screw according to claim 2 is characterized in that: The extrusion block (42) is located at the bevel (5) and is embedded with a permanent magnet (7), and the expansion block (41) is located at the bevel (6) and is embedded with a metal sheet (8) for adsorbing the permanent magnet (7).

4. The hollow grouting anchor high pressure grouting pump plastic screw according to claim 3 is characterized in that: The elastic member (44) comprises a slider (441), a connecting rod (442) and a spring (443); a slide groove (9) is provided in the connecting block (3); a slider (441) is slidably arranged in the slide groove (9); a side of the slider (441) close to the extrusion block (42) extends out of the connecting block (3) and is fixedly connected to the extrusion block (42); a spring (443) is arranged between a side of the slider (441) away from the extrusion block (42) and the slide groove (9).

5. The hollow grouting anchor high pressure grouting pump plastic screw according to claim 4 is characterized in that: A protective sleeve (10) is fixedly connected to the outer sides of the spiral blade (2) and the shaft body (1).

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