Grouting pipe pressure resistance testing device

Abstract

The present invention provides a grouting pipe pressure resistance detection device, in which the front end plugging and the opening and closing power are respectively fixedly installed on the support frame, and the rear end plugging is arranged on one side of the opening and closing power, the front end plugging and the rear end plugging are connected by a protective grille, and a pipe body to be tested is arranged in the protective grille, and the two ends of the pipe body to be tested are elastically blocked by the front end plugging and the rear end plugging respectively, and one end of the rear end plugging can be detachably installed with an injection pipe. The detection device described in the present invention, the opening and closing power can open the inner ring of the rear end plugging, the opened rear end plugging can be inserted into the pipe body to be tested, the restored rear end plugging inner ring can seal and clamp one end of the pipe body to be tested, and at the same time drive the front end plugging to seal and clamp the other end of the pipe body to be tested through the protective grille, through the joint mechanical action of the rear end plugging and the front end plugging on the front and rear ends of the pipe body to be tested, after the opening and closing power loses power, the sealing effect can be maintained to prevent the medium in the pipe body to be tested from leaking, thereby improving the detection quality.

Description

Technical Field

[0001] The invention belongs to the field of grouting pipe production, and in particular relates to a grouting pipe pressure resistance detection device. Background Art

[0002] In concrete construction, construction joints, cold joints, pipe seepage joints, pores between ground and walls, etc., when people are reinforcing some areas prone to collapse or soft soil layers, they all need to use grouting pipes to perform permanent sealing by grouting. The grouting pipe used in the prior art is a metal round pipe, and a grouting hole is provided on the pipe body of the metal round pipe. One end of the metal round pipe is closed with a metal disc to form a terminal, and the other end is provided with a thread that can be connected to the output pipe of the grouting pump. When in use, a hole is first drilled to the designed length at the expected grouting position with a drilling rig, and then the grouting pipe is inserted into the hole for grouting. Different grouting depths and geological conditions require different grouting hydraulic pressures, and in order to allow the grouting slurry to fully penetrate, the grouting pipe is usually at the bottom of the borehole during grouting, and its grouting pressure is relatively large. During production, the pressure resistance of the grouting pipe is an important quality indicator. Summary of the invention

[0003] In view of this, the present invention aims to propose a grouting pipe pressure resistance detection device to solve the problems in the prior art of grouting pipe pressure resistance test that the medium pressure in the pipe is high, the pipe end seal is at risk of high-pressure explosion, and the pipe end seal pressure is too high to easily damage the test pipe body.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A grouting pipe pressure resistance detection device comprises a front end seal, a rear end seal, an opening and closing power and a protective grille, wherein the front end seal and the opening and closing power are respectively fixedly mounted on a support frame, and a rear end seal is arranged on one side of the opening and closing power, the front end seal and the rear end seal are connected through a protective grille, and a pipe body to be tested is arranged in the protective grille, and both ends of the pipe body to be tested are elastically sealed by the front end seal and the rear end seal respectively, an air injection pipe is detachably mounted on one end of the rear end seal, the air injection pipe is connected to an external air injection device, a pressure detection unit is arranged on the air injection pipe, and the pressure detection unit is used to detect the medium pressure in the pipe body to be tested, the opening and closing power can open the inner ring of the rear end seal, the opened rear end seal can be inserted into the pipe body to be tested, the restored inner ring of the rear end seal can seal and clamp one end of the pipe body to be tested, and at the same time, the front end seal is driven to seal and clamp the other end of the pipe body to be tested through the protective grille.

[0006] Furthermore, the rear end plugging includes a first outer shell, a first sealing plugging assembly is arranged on the inner circle of one end of the first outer shell, the other end of the first outer shell is abutted against one end of the opening and closing power, a first flange is arranged on the periphery of the first outer shell, and one end of the protective grille is connected to the first flange, a first sliding rod is installed on one end of the first sealing plugging assembly, one end of the first sliding rod is fixedly connected to the movable end of the opening and closing power, a hard spring is arranged on the periphery of the first sliding rod, and the two ends of the hard spring are respectively abutted against one end of the first sealing plugging assembly and one end of the first outer shell, an air intake pipe is arranged on the first outer shell, and the air intake pipe is threadedly connected to the air injection pipe.

[0007] Furthermore, the first sealing and plugging assembly includes a first slider, the periphery of which is slidably connected to the inner ring of the first outer shell, a first sliding rod is installed at one end of the first slider, a first mounting groove is arranged at the other end of the first slider, a plurality of first opening and closing claws are circumferentially installed in the first mounting groove, and the inner ring of each first opening and closing claw is clamped to the periphery of the expansion ring, a first ramp is arranged on the periphery of each first opening and closing claw, a first annular clamping platform is arranged on the inner ring of the first outer shell, and the inner ring of the first annular clamping platform is abutted against the slope surface of the first ramp.

[0008] Furthermore, the large diameter end of each first ramp is clamped on the inner ring of the first sealing ring, and the first outer shell inner ring is provided with a first sealing ring platform, and one end of the first sealing ring platform and the inner ring of the first outer shell can be sealed to the first sealing ring;

[0009] Furthermore, a second sealing ring is installed in the first installation groove, and one end of each first opening and closing claw and the periphery of one end of the tube body to be detected can be sealed to the second sealing ring.

[0010] Furthermore, a first sleeve is provided on the inner ring of one end of the first slider, a second sleeve is provided on the inner ring of the first outer shell, a second annular table is provided on one end of the first sleeve, a third annular table is provided on one end of the second sleeve, and the outer periphery of the second annular table is slidably connected to the second sleeve, the inner ring of the third annular table slides the first sleeve, and the inner diameter of the third annular table is larger than the outer diameter of the second annular table, a third sealing ring is provided on the outer periphery of the first sleeve, and the third sealing ring is located between the second annular table and the third annular table.

[0011] Furthermore, the support frame includes a base plate, a first support plate is fixedly mounted on the base plate, the opening and closing power includes a linear drive, the linear drive is arranged on the first support plate, the movable end of the linear drive is connected to the first slide bar, a second slide bar is arranged on the first support plate, the outer periphery of the second slide bar is slidably connected to the second support plate, and the second support plate and the first support plate are arranged parallel to each other, the outer periphery of the second slide bar is threadedly connected to the abutment nut, one end of the first shell can abut against one side of the first support plate, and the other side of the first support plate can abut against the other side of the abutment nut.

[0012] Furthermore, the front end block includes a second shell, a second flange is arranged on the periphery of the second shell, one end of the protective grille is threadedly connected to the second flange, and an inner expansion rod is fixedly arranged on the inner ring of the second shell, a second slider is slidably arranged on the inner ring of the second shell, a second mounting groove is arranged at one end of the second slider, a plurality of second opening and closing claws are circumferentially arranged in the second mounting groove, and each second opening and closing claw is located on the periphery of the inner expansion rod and on the inner ring of the second shell, a second ramp is arranged on the outer side of each second opening and closing claw, a fourth annular clamping platform is arranged on the inner ring of one end of the second shell, the inner ring of the fourth annular clamping platform can abut against the outer side of the second ramp, a third ramp is arranged on the inner side of each second opening and closing claw, and one end of the inner expansion rod can abut against the inner side of the third ramp.

[0013] Furthermore, an arc-shaped clamping platform is provided at one end of each second opening and closing claw, and a third mounting groove is provided on the outside. The outer side of the arc-shaped clamping platform can abut against the inner ring of the tube body to be tested, and each third mounting groove abuts against the inner ring of the fourth sealing ring. The outer periphery of the fourth sealing ring can be sealed and connected to the inner ring of the tube body to be tested.

[0014] Furthermore, an abutment sleeve is fixedly arranged at one end of the second outer shell, and the outer side of each second opening and closing claw is slidably connected to the inner ring of the abutment sleeve. An annular groove is arranged at one end of the abutment sleeve, and the outer periphery of the annular groove can abut against the inner ring of the tube body to be tested, and one end of the annular groove can abut against the outer periphery of the fourth sealing ring.

[0015] Further, a first end cover is installed at one end of the second housing, a sliding hole is provided at one end of the first end cover, a third sliding rod is slidably connected in the sliding hole, the third sliding rod is detachably installed on the third support plate, the third support plate is fixedly installed on the bottom plate, one end of the third sliding rod is connected to one end of the second slider, and a first spring is provided on the third sliding rod, and two ends of the first spring are respectively abutted against the first end cover and the second slider;

[0016] Furthermore, the outer periphery of the third sliding rod is threadedly connected to two locking nuts, and a locking nut is respectively provided on both sides of the third supporting plate.

[0017] Furthermore, a fourth mounting groove is provided on the second sliding block, a washer is provided at one end of the third sliding rod, the outer periphery of the washer is slidably connected to the fourth mounting groove, a second end cover is provided at the open end of the fourth mounting groove, the outer periphery of the third sliding rod is slidably connected to the middle part of the second end cover, a second spring is provided on the outer periphery of the third sliding rod, and both ends of the second spring abut against the washer and the second end cover.

[0018] Furthermore, a fifth annular clamping platform is arranged on the periphery of the second sliding rod, and a fifth sealing ring is arranged between the fifth annular clamping platform and the first end cover.

[0019] Furthermore, the protective grille includes a pull rod, both ends of which are fixedly connected to the first flange and the second flange via a fastening nut respectively, and a binding strap is arranged on the periphery of the pull cylinder, and the binding strap is used to bind the periphery of the pipe body to be tested.

[0020] Compared with the prior art, the grouting pipe pressure resistance detection device of the present invention has the following beneficial effects:

[0021] (1) The grouting pipe pressure resistance detection device described in the present invention has an opening and closing power that can open the inner ring of the rear end seal, and the opened rear end seal can be inserted into the pipe body to be tested. The restored inner ring of the rear end seal can seal and clamp one end of the pipe body to be tested, and at the same time, the front end seal is driven by the protective grille to seal and clamp the other end of the pipe body to be tested. Through the joint mechanical action of the rear end seal and the front end seal on the front and rear ends of the pipe body to be tested, after the opening and closing power loses power, the sealing effect can be maintained to prevent the medium in the pipe body to be tested from leaking, thereby improving the detection quality. In addition, the front end seal and the rear end seal can clamp the pipe ends respectively to prevent the high-pressure medium from ejecting the two seals at high pressure, thereby avoiding production safety hazards.

[0022] (2) In the grouting pipe pressure resistance detection device described in the present invention, the opening and closing power can pull the first sliding rod to move, the sliding first sliding rod can compress the hard spring, the hard spring restoring elasticity can drive the first outer shell to move, and the first outer shell can drive the front end plugging movement through the first flange and the protective grille, and the hard spring restoring elasticity can drive the first sealing plugging assembly and the first outer shell to move relative to each other, so that the first sealing plugging assembly clamps the pipe body to be tested.

[0023] (3) In the grouting pipe pressure resistance detection device described in the present invention, when the multiple first opening and closing claws are in an unstressed state, the expansion ring is used to ensure the relative positions of the multiple first opening and closing claws and ensure the combined inner diameter of the multiple first opening and closing claws, so as to facilitate the insertion of the end of the pipe body to be tested into the inner ring of the combination of the multiple first opening and closing claws. The elasticity of the hard spring recovery drives the inner ring of the first annular clamping platform to abut against the slope of the first slope platform, thereby reducing the diameter of the inner ring of the combination of the multiple first opening and closing claws, so that the multiple first opening and closing claws can clamp the end of the pipe body to be tested.

[0024] (4) The grouting pipe pressure resistance detection device described in the present invention drives the first sealing ring to be squeezed to the first sealing ring when the inner ring of the first annular clamping platform abuts against the slope of the first slope platform. The first sealing ring is used to ensure the sealing of this part. The second sealing ring is installed in the first installation groove. One end of each first opening and closing claw and the outer periphery of one end of the pipe body to be detected can be sealed to the second sealing ring. When the hard spring presses the first slider and the inner ring of the first annular clamping platform abuts against the first slope platform, the second sealing ring is compressed. The second sealing ring is used to ensure the sealing of this part. Through the sealing of the first sealing ring and the second sealing ring, it is ensured that the medium pressure in the pipe body to be detected does not leak from the multiple first opening and closing claws.

[0025] (5) In the grouting pipe pressure resistance detection device described in the present invention, the third sealing ring is located between the second annular clamping platform and the third annular clamping platform, the hard spring can drive the first sliding sleeve and the second sliding sleeve to move relative to each other, the second annular clamping platform and the third annular clamping platform can squeeze the third sealing ring, and the third sealing ring can ensure the sealing of this part to ensure that the medium pressure in the pipe body to be tested is not leaked from the first outer shell.

[0026] (6) In the grouting pipe pressure resistance detection device described in the present invention, the abutment nut can adjust the relative position of the first shell and the second support plate. After the first shell abuts against the second support plate, the movable end of the linear drive can pull the first slide bar to move relative to it. After the first slide bar is pulled, the hard spring is compressed. After the pipe body to be tested is installed and the abutment nut is screwed, the first slide bar remains stationary, and the hard spring can drive the first shell to move relative to it, so as to ensure that the first opening and closing claws clamp the periphery of the pipe body to be tested.

[0027] (7) In the grouting pipe pressure resistance testing device described in the present invention, the first outer shell can drive the second outer shell to move through the first flange, the protective grille and the second flange, and the second outer shell can drive the inner expansion rod to slide. The end of the inner expansion rod abuts against the third ramp to achieve the expansion of the multiple second opening and closing claws, so that the multiple second opening and closing claws are clamped in the inner circle of the pipe body to be tested.

[0028] (8) In the grouting pipe pressure resistance testing device described in the present invention, the fourth sealing ring is used to be in a reduced diameter state when the multiple second opening and closing claws are under stress, so as to ensure that the multiple second opening and closing claws are inserted into the inner ring of the pipe body to be tested, and the annular groove of the abutment sleeve can be inserted into the pipe end of the pipe body to be tested. The annular groove and the arc-shaped clamp squeeze the fourth sealing ring to ensure the sealing of this part and prevent the medium pressure in the pipe body to be tested from leaking out through this part.

[0029] (9) In the grouting pipe pressure resistance detection device described in the present invention, the third slide bar can be installed on the third support plate to realize the relative movement of the third slide bar and the second shell, so that the second opening and closing claw can be extended and retracted in the second shell, and the first spring and the second spring are floating structures of the third slide bar and the second shell, so that the relative movement of the third slide bar and the second shell is asynchronous, so as to adjust the relative position of the second opening and closing claw fixed in the pipe end to prevent the internal expansion from being excessively inserted into the second opening and closing claw, causing damage to the second opening and closing claw or damage to the inner ring of the pipe body to be tested, the elastic coefficients of the first spring and the second spring can be adjusted according to the working conditions, and a fifth annular clamping platform is arranged on the periphery of the second slide bar, and a fifth sealing ring is arranged between the fifth annular clamping platform and the first end cover, when the third slide bar and the second shell move relative to each other, the fifth sealing ring is compressed to ensure that the medium pressure in the pipe body to be tested does not leak out from here. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is a structural schematic diagram of a grouting pipe pressure resistance detection device according to an embodiment of the present invention;

[0032] Figure 2 It is a side view schematic diagram of a grouting pipe pressure resistance detection device according to an embodiment of the present invention;

[0033] Figure 3 It is a cross-sectional schematic diagram of a grouting pipe pressure resistance detection device according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic structural diagram of the front end blocking according to an embodiment of the present invention;

[0035] Figure 5 It is a cross-sectional schematic diagram of the front end plugging according to an embodiment of the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the cooperation between the plurality of second opening and closing claws and the fourth sealing ring according to an embodiment of the present invention;

[0037] Figure 7 It is a schematic structural diagram of the second opening and closing claw according to an embodiment of the present invention;

[0038] Figure 8 This is a schematic structural diagram of a second housing according to an embodiment of the present invention;

[0039] Fig. 9 is a cross-sectional schematic diagram of the second housing according to an embodiment of the present invention;

[0040] Fig.10 is a schematic structural diagram of a third sliding bar according to an embodiment of the present invention;

[0041] Fig.11 It is a structural schematic diagram of the rear end blocking and opening and closing power coordination according to an embodiment of the present invention;

[0042] Fig.12 This is a schematic diagram of the structure of the rear end plugging according to an embodiment of the present invention;

[0043] Fig.13 It is a cross-sectional schematic diagram of the rear end plugging according to an embodiment of the present invention;

[0044] Fig.14 It is a schematic diagram of the structure of the cooperation between a plurality of first opening and closing claws and an expansion ring according to an embodiment of the present invention;

[0045] Fig.15is a cross-sectional schematic diagram of a first housing according to an embodiment of the present invention;

[0046] Fig.16 It is a structural schematic diagram of the first sliding block according to an embodiment of the present invention;

[0047] Fig.17 It is a cross-sectional schematic diagram of the first sliding block described in an embodiment of the present invention.

[0048] Description of reference numerals:

[0049] 1-support frame; 11-bottom plate; 12-first support plate; 13-second support plate; 14-third support plate; 2-front end plugging; 21-second shell; 22-second flange; 23-inner expansion rod; 24-second slider; 25-second opening and closing claw; 26-second ramp; 27-fourth annular clamping platform; 28-third ramp; 29-arc clamping platform; 210-fourth sealing ring; 211-butt sleeve; 212-annular groove; 213-first end cover; 214-third slide bar; 215-first spring; 216-locking nut; 217-washer; 218-second end cover; 219-second spring; 220-fifth annular clamping platform; 221-fifth sealing ring; 3 -rear end plugging; 31-first shell; 32-first flange; 33-first slide bar; 34-hard spring; 35-inlet pipe; 36-first slider; 37-first opening and closing claw; 38-expansion ring; 39-first ramp; 310-first annular clamping platform; 311-first sealing ring; 312-first sealing ring platform; 313-second sealing ring; 314-first sleeve; 315-second sleeve; 316-second annular clamping platform; 317-third annular clamping platform; 318-third sealing ring; 4-opening and closing power; 41-linear drive; 42-second slide bar; 43-butt nut; 5-protective grille; 51-pull rod; 52-fastening nut; 6-tube to be tested. DETAILED DESCRIPTION

[0050] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0051] In the description of the present invention, 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 invention 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 limiting the present invention. In addition, the terms "first", "second", and the like 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. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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.

[0053] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0054] like Figure 1-Figure 17As shown, the grouting pipe pressure resistance detection device includes a front end plug 2, a rear end plug 3, an opening and closing power 4 and a protective grille 5. The front end plug 2 and the opening and closing power 4 are respectively fixedly installed on the support frame 1, and the rear end plug 3 is arranged on one side of the opening and closing power 4. The front end plug 2 and the rear end plug are connected through the protective grille 5, and a pipe body 6 to be tested is arranged in the protective grille 5. The two ends of the pipe body 6 to be tested are elastically blocked by the front end plug 2 and the rear end plug 3 respectively. One end of the rear end plug 3 can be detachably installed with an injection pipe, and the injection pipe is connected to an external injection device. A pressure detection unit is arranged on the injection pipe, and the pressure detection unit is used to detect the medium pressure in the pipe body 6 to be tested. The opening and closing power 4 can open the inner circle of the rear end seal 3, and the opened rear end seal 3 can be inserted into the tube body 6 to be tested. The restored inner circle of the rear end seal 3 can seal and support one end of the tube body 6 to be tested, and at the same time, the front end seal 2 is driven by the protective grille 5 to seal and support the other end of the tube body 6 to be tested. Through the joint mechanical action of the rear end seal 3 and the front end seal 2 on the front and rear ends of the tube body 6 to be tested, after the opening and closing power 4 loses power, the sealing effect can be maintained to prevent the medium in the tube body 6 to be tested from leaking, thereby improving the detection quality, and the front end seal 2 and the rear end seal 3 can clamp the tube ends respectively to prevent the high-pressure medium from ejecting the two seals at high pressure, thereby avoiding production safety hazards.

[0055] The rear end plugging 3 includes a first shell 31, a first sealing plugging assembly is arranged in the inner ring of one end of the first shell 31, the other end of the first shell 31 is abutted against one end of the opening and closing power 4, a first flange 32 is arranged on the periphery of the first shell 31, and one end of the protective grille 5 is connected to the first flange 32, a first slide bar 33 is installed on one end of the first sealing plugging assembly, one end of the first slide bar 33 is fixedly connected to the movable end of the opening and closing power 4, a hard spring 34 is arranged on the periphery of the first slide bar 33, and the two ends of the hard spring 34 are respectively abutted against one end of the first sealing plugging assembly and the first slide bar 33. At one end of a shell 31, an air inlet pipe 35 is arranged on the first shell 31, and the air inlet pipe 35 is threadedly connected to the air injection pipe. The opening and closing power 4 can pull the first slide bar 33 to move, and the sliding first slide bar 33 can compress the hard spring 34. The restoring elasticity of the hard spring 34 can drive the first shell 31 to move, and the first shell 31 can drive the front end block 2 to move through the first flange 32 and the protective grille 5, and the restoring elasticity of the hard spring 34 can drive the first sealing and plugging assembly and the first shell 31 to move relative to each other, so that the first sealing and plugging assembly clamps the tube body 6 to be tested.

[0056] The first sealing plugging assembly includes a first slider 36, the periphery of the first slider 36 is slidably connected to the inner ring of the first housing 31, one end of the first slider 36 is installed with a first slide bar 33, the other end of the first slider 36 is provided with a first mounting groove, a plurality of first opening and closing claws 37 are circumferentially installed in the first mounting groove, and the inner ring of each first opening and closing claw 37 is clamped to the periphery of the expansion ring 38, and the periphery of each first opening and closing claw 37 is provided with a first ramp 39, and the inner ring of the first housing 31 is provided with a first annular clamping platform 310, and the inner ring of the first annular clamping platform 310 abuts against the first ramp The expansion ring 38 is a spring ring. When the multiple first opening and closing claws 37 are in an unstressed state, the expansion ring 38 is used to ensure the relative positions of the multiple first opening and closing claws 37 and ensure the combined inner diameter of the multiple first opening and closing claws 37, so as to facilitate inserting the end of the tube body 6 to be tested into the inner ring of the combination of the multiple first opening and closing claws 37. The elasticity of the hard spring 34 restores and drives the inner ring of the first annular clamping table 310 to abut the slope of the first sloped platform 39, and reduces the diameter of the inner ring of the combination of the multiple first opening and closing claws 37, so that the multiple first opening and closing claws 37 clamp the end of the tube body 6 to be tested.

[0057] The large diameter end of each first ramp 39 is clamped on the inner ring of the first sealing ring 311, and the inner ring of the first shell 31 is provided with a first sealing ring platform 312. One end of the first sealing ring platform 312 and the inner ring of the first shell 31 can be sealed to the first sealing ring 311. When the inner ring of the first annular clamping platform 310 abuts against the slope of the first ramp 39, the first sealing ring platform 312 is driven to be squeezed to the first sealing ring 311. The first sealing ring 311 is used to ensure the sealing of this part. The second sealing ring 313 is installed in the first mounting groove. One end of each first opening and closing claw 37 and the outer periphery of one end of the tube body to be tested can be sealed to the second sealing ring 313. When the hard spring 34 presses the first slider 36 and the inner ring of the first annular clamping platform 310 abuts against the first ramp 39, the second sealing ring 313 is compressed. The second sealing ring 313 is used to ensure the sealing of this part. Through the sealing of the first sealing ring 311 and the second sealing ring 313, it is ensured that the medium pressure in the tube body 6 to be tested does not leak from the multiple first opening and closing claws 37.

[0058] A first sleeve 314 is provided at the inner ring of one end of the first slider 36, a second sleeve 315 is provided at the inner ring of the first shell 31, and a second annular clamping platform 316 is provided at one end of the first sleeve 314, a third annular clamping platform 317 is provided at one end of the second sleeve 315, and the periphery of the second annular clamping platform 316 is slidably connected to the second sleeve 315, the first sleeve 314 is slid in the inner ring of the third annular clamping platform 317, and the inner diameter of the third annular clamping platform 317 is larger than the outer diameter of the second annular clamping platform 316, a third sealing ring 318 is provided at the periphery of the first sleeve 314, and the third sealing ring 318 is located between the second annular clamping platform 316 and the third annular clamping platform 317, the hard spring 34 can drive the first sleeve 314 and the second sleeve 315 to move relative to each other, the second annular clamping platform 316 and the third annular clamping platform 317 can squeeze the third sealing ring 318, and the third sealing ring 318 can ensure the sealing of this part to ensure that the medium pressure in the tube body 6 to be tested does not leak from the first shell 31.

[0059] The support frame 1 includes a bottom plate 11, on which a first support plate 12 is fixedly mounted, and an opening and closing power 4 includes a linear driver 41, on which the first support plate 12 is provided a linear driver 41, and a movable end of the linear driver 41 is connected to a first slide bar 33, on which a second slide bar 42 is provided, and the periphery of the second slide bar 42 is slidably connected to the second support plate 13, and the second support plate 13 and the first support plate 12 are arranged parallel to each other, and the periphery of the second slide bar 42 is threadedly connected to the abutment nut 43, and one end of the first housing 31 can abut against one side of the first support plate 12, and the first support plate 1 2 can be abutted against the other side of the abutment nut 43, and the abutment nut 43 can adjust the relative position of the first shell 31 and the second support plate 13. After the first shell 31 abuts against the second support plate 13, the movable end of the linear driver 41 can pull the first slide bar 33 for relative movement. After the first slide bar 33 is pulled, the hard spring 34 is compressed. After the tube body 6 to be tested is installed and the abutment nut 43 is screwed, the first slide bar 33 remains stationary, and the hard spring 34 can drive the first shell 31 to move relative to ensure that the first opening and closing claws 37 clamp the outer periphery of the tube body 6 to be tested.

[0060] The front end plugging 2 includes a second shell 21, a second flange 22 is arranged on the periphery of the second shell 21, one end of the protective grille 5 is threadedly connected to the second flange 22, and an inner expansion rod 23 is fixedly arranged on the inner ring of the second shell 21, a second slider 24 is slidably arranged on the inner ring of the second shell 21, a second mounting groove is arranged at one end of the second slider 24, a plurality of second opening and closing claws 25 are arranged circumferentially in the second mounting groove, and each second opening and closing claw 25 is located on the periphery of the inner expansion rod 23 and the inner ring of the second shell 21, a second ramp 26 is arranged on the outer side of each second opening and closing claw 25, a fourth annular clamping platform 27 is arranged on the inner ring of one end of the second shell 21, and the fourth annular clamping platform 2 The inner circle of 7 can abut against the outer side of the second ramp 26, and the cooperation between the fourth annular clamping platform 27 and the second ramp 26 is a reducing structure of a combination of multiple second opening and closing claws 25, and a third ramp 28 is arranged on the inner side of each second opening and closing claw 25, and one end of the inner expansion rod 23 can abut against the inner side of the third ramp 28, and the first outer shell 31 can drive the second outer shell 21 to move through the first flange 32, the protective grille 5, and the second flange 22, and the second outer shell 21 can drive the inner expansion rod 23 to slide, and the end of the inner expansion rod 23 abuts against the third ramp 28 to realize the expansion of the multiple second opening and closing claws 25, so that the multiple second opening and closing claws 25 are clamped on the inner circle of the tube body 6 to be tested.

[0061] An arc-shaped clamping platform 29 is provided at one end of each second opening and closing claw 25, and a third mounting groove is provided on the outer side. The outer side of the arc-shaped clamping platform 29 can abut against the inner ring of the tube body 6 to be tested, and each third mounting groove abuts against the inner ring of the fourth sealing ring 210. The outer periphery of the fourth sealing ring 210 can be sealed and connected to the inner ring of the tube body 6 to be tested. An abutting sleeve 211 is fixedly provided at one end of the second shell 21. The outer side of each second opening and closing claw 25 is slidably connected to the inner ring of the abutting sleeve 211. An annular groove 212 is provided at one end of the abutting sleeve 211. The outer periphery of the annular groove 212 is It can abut against the inner ring of the tube body 6 to be tested, and one end of the annular groove 212 can abut against the outer periphery of the fourth sealing ring 210. The fourth sealing ring 210 is used to be in a reduced diameter state when the multiple second opening and closing claws 25 are under force, so as to ensure that the multiple second opening and closing claws 25 are plugged into the inner ring of the tube body 6 to be tested. The annular groove 212 of the abutting sleeve 211 can be plugged into the tube end of the tube body 6 to be tested. The annular groove 212 and the arc-shaped clamping table 29 squeeze the fourth sealing ring 210 to ensure the sealing of this part and prevent the medium pressure in the tube body 6 to be tested from leaking out of this part.

[0062] The first end cover 213 is installed at one end of the second housing 21, and a sliding hole is provided at one end of the first end cover 213. The sliding hole is slidably connected to the third sliding rod 214. The third sliding rod 214 is detachably installed on the third support plate 14. The third support plate 14 is fixedly installed on the bottom plate 11. One end of the third sliding rod 214 is connected to one end of the second slider 24, and a first spring 215 is provided on the third sliding rod 214. The two ends of the first spring 215 are respectively abutted against the first end cover 213 and the second slider 24. The outer surface of the third sliding rod 214 The second support plate 14 is provided with a locking nut 216 on both sides thereof, a fourth mounting groove is provided on the second slider 24, a washer 217 is provided at one end of the third slider 214, the periphery of the washer 217 is slidably connected to the fourth mounting groove, a second end cover 218 is provided at the open end of the fourth mounting groove, the periphery of the third slider 214 is slidably connected to the middle part of the second end cover 218, a second spring 219 is provided at the periphery of the third slider 214, and both ends of the second spring 219 abut against the washer 217. The third slide bar 214 can be installed on the third support plate 14 to realize the relative movement of the third slide bar 214 and the second housing 21, so that the second opening and closing claw 25 can be extended and retracted in the second housing 21, and the first spring 215 and the second spring 219 are floating structures of the third slide bar 214 and the second housing 21, so that the relative movement of the third slide bar 214 and the second housing 21 is asynchronous, so as to adjust the relative position of the second opening and closing claw 25 fixed in the pipe end to prevent the second opening and closing claw 25 from being over-expanded. The spring 215 and the spring 219 can be adjusted according to the working conditions, and a fifth annular clamping platform 220 is arranged on the periphery of the second slide bar 42, and a fifth sealing ring 221 is arranged between the fifth annular clamping platform 220 and the first end cover 213. When the third slide bar 214 and the second housing 21 move relative to each other, the fifth sealing ring 221 is compressed to ensure that the medium pressure in the tube body 6 to be tested does not leak out from here.

[0063] The protective grille 5 includes a pull rod 51, both ends of which are fixedly connected to the first flange 32 and the second flange 22 by a fastening nut 52 respectively, and a strap is arranged around the pull cylinder, which is used to bind the periphery of the tube body 6 to be tested, fix the relative position of the tube body 6 to be tested and the support frame 1, and prevent the tube body 6 to be tested from moving during the injection pressure test, causing production risks.

[0064] Working process of grouting pipe pressure resistance detection device:

[0065] The staff puts the tube body 6 to be tested into the protective grille 5, screws the fastening nut 52 to make the protective grille 5 and the front end plug 2 and the rear end plug 3 in a loose state, screws the locking nut 216 to make the third support plate 14 and the front end plug 2 in a loose state, and turns the knob abutting nut 43 to make the first shell 31 and the second shell 21 in abutting state, pulls the first sliding rod 33 through the linear drive 41 to make the first opening and closing claw 37 in an open state, and the staff inserts the tube body 6 to be tested into the first opening and closing claw 37, and inserts the second opening and closing claw 25 into the tube body to be tested. 6, after locking the locking nut 216 and tightening the nut 52, turn the knob to set the number of turns of the abutment nut 43, appropriately release the relative position of the second support plate 13, so that after the hard spring releases its elasticity, stop injecting power into the linear drive 41, and after the movable end of the linear drive 41 is in a relaxed state, turn the knob to abut the nut 43 to completely release the abutment nut 43, and the two ends of the tube body 6 to be tested are blocked by the elasticity of the hard spring. The elastic coefficient of the hard spring is selected according to the working conditions, and the linear drive 41 can use a linear cylinder or a linear hydraulic cylinder of the prior art.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Grouting pipe pressure resistance detection device, characterized in that: The device comprises a front end block (2), a rear end block (3), an opening and closing power (4) and a protective grille (5), wherein the front end block (2) and the opening and closing power (4) are respectively fixedly mounted on a support frame (1), and a rear end block (3) is arranged on one side of the opening and closing power (4), the front end block (2) and the rear end block are connected via the protective grille (5), and a tube body to be tested (6) is arranged in the protective grille (5), and both ends of the tube body to be tested (6) are elastically blocked via the front end block (2) and the rear end block (3), and the rear end block (3) is elastically blocked. ) is detachably mounted with an air injection pipe at one end thereof, the air injection pipe being connected to an external air injection device, a pressure detection unit being arranged on the air injection pipe, the pressure detection unit being used to detect the medium pressure in the tube body (6) to be tested, the opening and closing power (4) being able to open the inner ring of the rear end plugging (3), the opened rear end plugging (3) being able to be inserted into the tube body (6) to be tested, the restored inner ring of the rear end plugging (3) being able to seal and clamp one end of the tube body (6) to be tested, and at the same time driving the front end plugging (2) to seal and clamp the other end of the tube body (6) to be tested through the protective grille (5); The rear end plug (3) comprises a first shell (31), a first sealing plugging assembly is arranged on the inner ring of one end of the first shell (31), the other end of the first shell (31) is abutted against one end of the opening and closing power (4), a first flange (32) is arranged on the periphery of the first shell (31), and one end of the protective grille (5) is connected to the first flange (32), a first slide bar (33) is installed on one end of the first sealing plugging assembly, one end of the first slide bar (33) is fixedly connected to the movable end of the opening and closing power (4), a hard spring (34) is arranged on the periphery of the first slide bar (33), and the two ends of the hard spring (34) are respectively abutted against one end of the first sealing plugging assembly and one end of the first shell (31), an air intake pipe (35) is arranged on the first shell (31), and the air intake pipe (35) is threadedly connected to the air injection pipe.

2. The grouting pipe pressure resistance detection device according to claim 1 is characterized in that: The first sealing plugging component includes a first slider (36), the periphery of the first slider (36) is slidably connected to the inner ring of the first shell (31), one end of the first slider (36) is installed with a first slide rod (33), the other end of the first slider (36) is provided with a first installation groove, a plurality of first opening and closing claws (37) are circumferentially installed in the first installation groove, and the inner ring of each first opening and closing claw (37) is clamped to the periphery of the expansion ring (38), the periphery of each first opening and closing claw (37) is provided with a first ramp (39), the inner ring of the first shell (31) is provided with a first annular clamping platform (310), and the inner ring of the first annular clamping platform (310) is abutted against the slope of the first ramp (39).

3. The grouting pipe pressure resistance detection device according to claim 2 is characterized in that: The large diameter end of each first ramp (39) is clamped on the inner ring of the first sealing ring (311), and the inner ring of the first housing (31) is provided with a first sealing ring platform (312), and one end of the first sealing ring platform (312) and the inner ring of the first housing (31) can be sealed to the first sealing ring (311); A second sealing ring (313) is installed in the first installation groove, and one end of each first opening and closing claw (37) and the periphery of one end of the tube body to be detected can be sealed to the second sealing ring (313).

4. The grouting pipe pressure resistance detection device according to claim 2, characterized in that: A first sliding sleeve (314) is arranged on the inner ring of one end of the first sliding block (36), a second sliding sleeve (315) is arranged on the inner ring of the first housing (31), a second annular clamping platform (316) is arranged on one end of the first sliding sleeve (314), a third annular clamping platform (317) is arranged on one end of the second sliding sleeve (315), and the periphery of the second annular clamping platform (316) is slidably connected to the inside of the second sliding sleeve (315), the inner ring of the third annular clamping platform (317) slides the first sliding sleeve (314), and the inner diameter of the third annular clamping platform (317) is larger than the outer diameter of the second annular clamping platform (316), and a third sealing ring (318) is arranged on the periphery of the first sliding sleeve (314), and the third sealing ring (318) is located between the second annular clamping platform (316) and the third annular clamping platform (317).

5. The grouting pipe pressure resistance detection device according to claim 1, characterized in that: The support frame (1) comprises a base plate (11), a first support plate (12) is fixedly mounted on the base plate (11), an opening and closing power (4) comprises a linear driver (41), the first support plate (12) is provided with the linear driver (41), a movable end of the linear driver (41) is connected to a first slide bar (33), a second slide bar (42) is provided on the first support plate (12), the periphery of the second slide bar (42) is slidably connected to the second support plate (13), and the second support plate (13) and the first support plate (12) are arranged parallel to each other, the periphery of the second slide bar (42) is threadedly connected to the abutment nut (43), one end of the first housing (31) can abut against one side of the first support plate (12), and the other side of the first support plate (12) can abut against the other side of the abutment nut (43).

6. The grouting pipe pressure resistance detection device according to claim 1, characterized in that: The front end plug (2) comprises a second shell (21), a second flange (22) is arranged on the periphery of the second shell (21), one end of the protective grille (5) is threadedly connected to the second flange (22), an inner expansion rod (23) is fixedly arranged on the inner ring of the second shell (21), a second slider (24) is slidably arranged on the inner ring of the second shell (21), one end of the second slider (24) is provided with a second installation groove, a plurality of second opening and closing claws (25) are arranged in the circumferential direction in the second installation groove, and each second opening and closing claw (2 5) Located on the periphery of the inner expansion rod (23), located on the inner ring of the second outer shell (21), a second ramp (26) is arranged on the outer side of each second opening and closing claw (25), a fourth annular clamping platform (27) is arranged on the inner ring of one end of the second outer shell (21), the inner ring of the fourth annular clamping platform (27) can abut against the outer side of the second ramp (26), a third ramp (28) is arranged on the inner side of each second opening and closing claw (25), and one end of the inner expansion rod (23) can abut against the inner side of the third ramp (28).

7. The grouting pipe pressure resistance detection device according to claim 6, characterized in that: An arc-shaped clamping platform (29) is provided at one end of each second opening and closing claw (25), and a third mounting groove is provided on the outer side, the outer side of the arc-shaped clamping platform (29) can abut against the inner ring of the tube body (6) to be tested, each third mounting groove abuts against the inner ring of the fourth sealing ring (210), and the outer periphery of the fourth sealing ring (210) can be sealed and connected to the inner ring of the tube body (6) to be tested; An abutment sleeve (211) is fixedly provided at one end of the second housing (21); the outer side of each second opening and closing claw (25) is slidably connected to the inner ring of the abutment sleeve (211); an annular groove (212) is provided at one end of the abutment sleeve (211); the outer periphery of the annular groove (212) can abut against the inner ring of the tube body (6) to be tested; and one end of the annular groove (212) can abut against the outer periphery of the fourth sealing ring (210).

8. The grouting pipe pressure resistance detection device according to claim 6, characterized in that: A first end cover (213) is installed at one end of the second housing (21), a sliding hole is provided at one end of the first end cover (213), a third sliding rod (214) is slidably connected in the sliding hole, the third sliding rod (214) is detachably installed on the third support plate (14), the third support plate (14) is fixedly installed on the bottom plate (11), one end of the third sliding rod (214) is connected to one end of the second sliding block (24), and a first spring (215) is provided on the third sliding rod (214), and two ends of the first spring (215) are respectively abutted against the first end cover (213) and the second sliding block (24); The outer periphery of the third sliding rod (214) is threadedly connected to two locking nuts (216), and a locking nut (216) is respectively provided on both sides of the third supporting plate (14).

9. The grouting pipe pressure resistance detection device according to claim 6, characterized in that: A fourth mounting groove is provided on the second sliding block (24); a washer (217) is provided at one end of the third sliding rod (214); the periphery of the washer (217) is slidably connected to the fourth mounting groove; a second end cover (218) is provided at the open end of the fourth mounting groove; the periphery of the third sliding rod (214) is slidably connected to the middle of the second end cover (218); a second spring (219) is provided at the periphery of the third sliding rod (214); and both ends of the second spring (219) are abutted against the washer (217) and the second end cover (218); A fifth annular clamping platform (220) is arranged on the periphery of the second sliding rod (42), and a fifth sealing ring (221) is arranged between the fifth annular clamping platform (220) and the first end cover (213).

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