CN213233437U

CN213233437U - Grouting type enlarged head bag type anchor rod

Info

Publication number: CN213233437U
Application number: CN202021703606.9U
Authority: CN
Inventors: 贾祥南; 张顺利; 常进超; 贾昊潼
Original assignee: Xinxiang Jiahui Technology Co ltd
Current assignee: Xinxiang Jiahui Technology Co ltd
Priority date: 2020-07-07
Filing date: 2020-08-13
Publication date: 2021-05-18
Anticipated expiration: 2030-08-13
Also published as: CN213233438U; CN213296339U; CN213233434U; CN213233439U; CN213233433U; CN213233435U; CN213233436U; CN213233431U; CN213233432U; CN213233440U

Abstract

The utility model discloses a slip casting type expansion head bag type anchor rod, which belongs to the technical field of civil engineering and comprises a flexible bearing bag, a first hooping piece, a second hooping piece and a slip casting pipe, wherein the first hooping piece is provided with a first through hole and a second through hole along the axial direction; one end of the flexible bearing bag is tied on the first tying piece, and the other end of the flexible bearing bag is tied on the second tying piece; the grouting pipe is arranged in the second through hole in a penetrating mode; wherein, the bottom of slip casting pipe is provided with the check valve. The anti-pulling performance of the grouting type expanded head bag type anchor rod is greatly improved, and the engineering stability of the anchoring main body is further ensured. In addition, the function of arranging the one-way valve at the bottom of the grouting pipe is to enable the grout outlet point to be as close to the middle lower part of the bag as possible, so that grouting can be conveniently filled in the bag.

Description

Grouting type enlarged head bag type anchor rod

Technical Field

The utility model relates to a civil engineering technical field especially relates to slip casting formula enlarged footing bag formula stock.

Background

In the civil engineering technical fields of high-rise buildings, rail transit, bridge and tunnel engineering, urban underground transportation hubs, ports and docks, reservoir high dams, slope engineering, mine construction, national defense engineering and the like, in order to ensure the geotechnical structural stability of an engineering project, anchoring is generally required aiming at the corresponding engineering, so that the geotechnical structural stability of the corresponding engineering project is improved. In this case, a bolt with a set burial depth is generally used to pull the stress point of the project underground, thereby resisting the problem caused by the floating of the project due to the buoyancy. However, the structural surface of the grouting type expansion head bag type anchor rod in the prior art is generally constant in diameter, so that when the anchor rod is applied, only friction force between the axial direction of the grouting type expansion head bag type anchor rod and the axial interface of an anchor hole is generated by pulling an engineering project acceptance point, and the anti-floating effect is relatively small.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a slip casting formula enlarged footing bag formula stock, it can greatly increase the tensile of slip casting formula enlarged footing bag formula stock and pull out the performance, and then guarantees the engineering stability of anchor main part to be suitable for the practicality more.

In order to achieve the above object, the utility model provides a slip casting formula enlarged footing bag formula stock's technical scheme as follows:

the utility model provides a slip casting type expansion head bag type anchor rod, which comprises a flexible bearing bag (1), a first fastening piece (7), a second fastening piece (8) and a slip casting pipe (2),

a first through hole (15) and a second through hole (16) are axially arranged on the first clamping piece (7),

a third through hole (35) is arranged on the second clamping piece (8) along the axial direction,

the axes of the first through hole (15) and the third through hole (35) are aligned;

one end of the flexible bearing bag (1) is tied to the first tying piece (7), and the other end of the flexible bearing bag (1) is tied to the second tying piece (8);

the grouting pipe (2) is arranged in the second through hole (16) in a penetrating manner; wherein the content of the first and second substances,

the bottom of the grouting pipe (2) is provided with a one-way valve.

The grouting type expanded head capsule anchor rod can utilize the characteristic that the bearing capsule is made of flexible materials, after the grouting type expanded head capsule anchor rod extends into an anchor hole, the diameter of the bearing capsule is expanded by injecting concrete into the capsule, friction force is generated between the axial direction of the anchor rod and the axial direction of the anchor hole, and pressing acting force can be generated between the upper end face of the bearing capsule and the expanding end face of the anchor hole, so that the anti-pulling performance of the grouting type expanded head capsule anchor rod is greatly improved, and the engineering stability of an anchoring main body is further ensured. In this case, the technical solution can be realized only by the flexible bearing bag 1, the first fastening member 7 and the second fastening member 8, at the construction site, the threaded steel or the anchor cable 38 can be applied on site to simultaneously penetrate through the first through hole 15 and the third through hole 35 to connect the first fastening member 7 and the second fastening member 8, and by means of the rigidity property of the threaded steel or the anchor cable 38, the distance between the first fastening member 7 and the second fastening member 8 is supported and fixed by the threaded steel or the anchor cable simultaneously penetrating through the first fastening member 7 and the second fastening member 8, so that the grouting type expansion head bag type anchor rod with the flexible bearing bag 1 is manufactured at the construction site. Afterwards, can carry bag 1 to the flexible through-hole 16 slip casting of bearing, make the diameter of the flexible bag that bears after being propped open by the slip casting be greater than anchor eye excavation section 37 and be less than the diameter of spouting section 39 soon, under this condition, when slip casting formula enlarged head bag stock 40 receives the pulling effort, produce frictional force F1 in the axial between this flexible bag 1 that bears and the medium on every side, simultaneously, produce pressure effort F2 between flexible bag 1 and anchor eye excavation section 37, the reducing interface 54 between anchor eye blowout section 39 soon, that is to say, if need pull out the slip casting formula enlarged head bag stock that the embodiment of the utility model provides at this moment from the anchor eye, need overcome this frictional force F1 and this pressure effort F2 simultaneously. With traditional stock only need overcome its and anchor eye between frictional force F1, greatly increased slip casting formula enlarged footing bag formula stock the tensile resistance of pulling out the performance, consequently, the embodiment of the utility model provides a slip casting formula enlarged footing bag formula stock can make the anti-floating stability of anchor object obtain very big improvement. Besides, the embodiment of the utility model provides a slip casting formula enlarged footing bag formula stock still has manufacturing process simply, beneficial effect that the processing cost is low.

The function of arranging the one-way valve at the bottom of the grouting pipe is to enable the grout outlet point to be as close to the middle lower part of the bag as possible, so that the bag can be filled with grouting conveniently.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic view of a typical structure of a grouting type enlarged head bag anchor rod according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1, wherein the view is taken along a line below the section line;

fig. 3 is a schematic view of a typical structure of a grouting type enlarged footing bag type anchor rod provided in the second embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3, wherein the view is taken along a line below the cut line;

fig. 5 is a schematic view of a typical structure of a grouting type enlarged footing bag type anchor rod provided in the third embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 5, wherein the view is taken along a line below the cut line;

fig. 7 is a schematic view of a typical structure of a grouting type enlarged footing bag type anchor rod provided by the fourth embodiment of the present invention;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 7, wherein the view is taken upward along the section line;

FIG. 9 is an enlarged view of a portion E of FIG. 1;

FIG. 10 is an enlarged view of a portion F of FIG. 1;

FIG. 11 is a schematic diagram of an exemplary structure of a spring-bead type grouting port check valve;

FIG. 12 is a schematic view showing an exemplary structure of a check valve of a check type grouting port;

FIG. 13 is a schematic view of a typical structure of a filtering type slurry overflow;

FIG. 14 is a schematic diagram of an exemplary structure of a spring-bead type grouting port check valve;

FIG. 15 is a schematic view of an exemplary structure of a spring-bead type grouting port check valve in a cut-off state;

FIG. 16 is a schematic view of an exemplary structure of a spring-bead type grouting port check valve in an open state;

fig. 17 is a schematic view of a matching relationship between a grouting type enlarged footing bag type anchor rod and a foundation pit before grouting according to an embodiment of the present invention;

fig. 18 is a schematic view of a matching relationship between a grouting type enlarged footing bag type anchor rod provided by an embodiment of the present invention and a foundation pit when grouting is completed;

fig. 19 is a schematic view of a typical structure of a grouting type enlarged footing bag type anchor rod provided in the fifth embodiment of the present invention;

fig. 20 is a schematic view of a typical structure of a grouting type enlarged head capsule anchor rod according to a sixth embodiment of the present invention;

fig. 21 is a schematic view of a typical structure of a grouting type enlarged head capsule anchor rod according to a seventh embodiment of the present invention;

fig. 22 is a schematic structural diagram of a slip casting type enlarged footing bag type anchor rod according to an eighth embodiment of the present invention;

fig. 23 is a schematic view of a typical structure of a grouting type enlarged head capsule anchor rod according to the ninth embodiment of the present invention;

fig. 24 is a schematic structural diagram of a typical grouting type enlarged head capsule anchor rod provided in the tenth embodiment of the present invention;

fig. 25 is a schematic view of a typical structure of a grouting type enlarged head capsule anchor rod according to the eleventh embodiment of the present invention;

fig. 26 is a schematic view of a typical structure of a grouting type enlarged head bag anchor rod according to a twelfth embodiment of the present invention;

fig. 27 is a schematic view of a typical structure of a grouting type enlarged head capsule anchor rod according to a thirteenth embodiment of the present invention;

fig. 28 is a schematic structural view of a grouting type enlarged head capsule anchor rod according to a fourteenth embodiment of the present invention;

fig. 29 is a schematic view of a typical structure of a grouting type enlarged footing bladder type anchor rod according to a fifteenth embodiment of the present invention;

fig. 30 is a schematic structural view of a variable-diameter grouting type enlarged footing pocket anchor rod provided in accordance with a sixteenth embodiment of the present invention when the diameter-expanding assembly is in a contracted state;

FIG. 31 is an enlarged partial view of the portion K in FIG. 30;

FIG. 32 is an enlarged partial view of portion L of FIG. 30;

fig. 33 is a schematic structural view of a variable-diameter grouting type enlarged footing pocket anchor rod provided in accordance with a sixteenth embodiment of the present invention when the diameter-expanding assembly is in a diameter-expanded state;

fig. 34 is a schematic structural view of a variable-diameter grouting type enlarged footing pocket anchor rod provided in accordance with a sixteenth embodiment of the present invention when the diameter-expanding assembly is in a contracted state;

FIG. 35 is a sectional view taken along line H-H in FIG. 33;

fig. 36 is a partially enlarged schematic view of a portion M in fig. 34.

Fig. 37 is a schematic structural view of a grouting type enlarged head bag anchor rod according to a seventeenth embodiment of the present invention;

fig. 38 is a schematic structural diagram of a grouting type enlarged head capsule anchor rod according to a seventeenth embodiment of the present invention (in which, the capsule and the head protector are not shown).

Detailed Description

To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of a grouting type expanded head bag anchor rod according to the present invention, and its specific embodiments, structures, features and effects. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, with the specific understanding that: both a and B may be included, a may be present alone, or B may be present alone, and any of the three cases can be provided.

The utility model provides a slip casting formula enlarged footing bag formula stock includes flexible bearing bag 1, first binding spare 7, second binding spare 8. The first clamping piece 7 is provided with a first through hole 15 and a second through hole 16 along the axial direction, the second clamping piece 8 is provided with a third through hole 35 along the axial direction, and the axes of the first through hole 15 and the third through hole 35 are aligned; one end of the flexible carrier sachet 1 is strapped to the first cinch 7 and the other end of the flexible carrier sachet 1 is strapped to the second cinch 8.

The grouting type enlarged head bag type anchor rod further comprises a grouting pipe 2, and the grouting pipe 2 penetrates through the second through hole 16.

The grouting type expanded head bag type anchor rod further comprises a guide pipe 4, one end of the guide pipe 4 is fixedly connected to the first hooping piece 7, the other end of the guide pipe is fixedly connected to the second hooping piece 8, and the axes of the first through hole 15, the guide pipe 4 and the third through hole 35 are aligned, so that a communicated first accommodating space is formed in the first through hole 15, the guide pipe 4 and the third through hole 35.

Wherein the first gripping member 7 comprises a first attachment member 14, a first inner gripping ring 23 and a first outer gripping ring 24. The axes of the first inner and outer

gripping rings

23, 24 are aligned so that one end of the flexible carrier bag 1 is compressed between the outer wall of the first inner gripping ring 23 and the inner wall of the first outer gripping ring 24. The first inner and outer

gripping rings

23 and 24 are each fixedly connected to the first connecting member 14 by their upper edges. The first through hole 15 and the second through hole 16 are both axially opened in the first connecting piece 14.

The first connecting piece 14 is provided with a first limiting flange 22, so that a first limiting groove is formed on the first connecting piece 14 through the first limiting flange 22, the axis of the first limiting flange 22 is aligned with the axis of the first connecting piece 14, and the first inner tightening ring 23 and the first outer tightening ring 24 are embedded in the first limiting groove.

Wherein the second clasp 8 comprises a second connector 26, a second inner clasp 27 and a second outer clasp 28, the axes of the second inner clasp 27 and the second outer clasp 28 being aligned such that the other end of the flexible carrier pouch 1 is compressed between the outer wall of the second inner clasp 27 and the inner wall of the second outer clasp 28, both the second inner clasp 27 and the second outer clasp 28 being fixedly connected to the second connector 26 by their lower edges; the third through hole 35 is opened in the second connector 26 in the axial direction.

The second connecting piece 26 is provided with a second limiting flange 30, so that a second limiting groove is formed on the second connecting piece 26 through the second limiting flange 30, the axis of the second limiting flange 30 is aligned with the axis of the second connecting piece 26, and the second inner clamping ring 27 and the second outer clamping ring 28 are embedded in the second limiting groove.

Wherein, on the lower surface of the first clamping member 7, a third limiting flange 29 is arranged at the edge of the first through hole 15, so that the first clamping member 7 forms a third limiting groove through the third limiting flange 29. On the upper surface of the second clip 8, a fourth stop flange 31 is provided at the edge of the third through hole 35, so that the second clip 8 forms a fourth stop recess by the fourth stop flange 31. The axes of the third limiting groove and the fourth limiting groove are aligned, so that one end of the guide tube 4 is embedded in the third limiting groove, and the other end of the guide tube 4 is embedded in the fourth limiting groove.

The grouting type expanded head bag type anchor rod further comprises a locking assembly, and the locking assembly comprises a tray 32, a guide screw rod 11 and a locking nut 33. Be provided with the through-hole on the tray 32, lead screw 11's one end fixed connection in second binding member 8, after lead screw 11's the other end passed the through-hole, had the free end in the bottom of tray 32, constitute the screw thread between lock nut 33 and the lead screw 11 and vice.

Wherein, slip casting formula enlarged footing bag formula stock still includes the gasket. The washer is disposed between the lock nut 33 and the tray 32.

The grouting type expanded head bag type anchor rod further comprises a protective head 9, the bottom end of the protective head 9 is provided with a tip end, and the protective head 9 is fixedly connected to the lower surface of the second hoop member 8 through the upper edge of the protective head 9.

Wherein, be equipped with fourth through-hole 10 on protecting head 9 for protect the inside of head 9 and communicate with the external world through fourth through-hole 10.

Wherein, slip casting formula enlarged footing bag formula stock still includes rigidity cage 4, and rigidity cage 4 sets up between first binding member 7 and second binding member 8.

Wherein, the first clamping piece 7 is also provided with a fifth through hole 17 along the axial direction.

Wherein, the second clamping piece 8 is also provided with a sixth through hole 55 along the axial direction.

Wherein, the bottom of the grouting pipe 2 is provided with a one-way valve.

Wherein, the slip casting type expansion head bag type anchor rod also comprises a slip casting pipe 18. The grout pipe 18 is arranged in the fifth through hole 17 in a penetrating way, so that the inner cavity of the flexible bearing bag 1 is communicated with the outside through the grout pipe 18. The top of the slurry overflow pipe 18 is provided with a one-way valve.

Wherein, the slip casting type expansion head bag type anchor rod also comprises a grout discharge pipe 56. The grout outlet pipe 56 is arranged in the sixth through hole 55 in a penetrating way, so that the inner cavity of the flexible bearing bag 1 is communicated with the outside through the grout outlet pipe 56. The bottom of the slurry discharge pipe 56 is provided with a check valve.

Wherein, the check valve is blasting formula check valve, and blasting formula check valve includes blasting piece 6, and blasting piece 6 has the blasting pressure of settlement. The side wall of the grouting pipe 2 or the grout overflow pipe 18 or the grout discharge pipe 56 is provided with a seventh through hole 19, the blasting piece 6 is sleeved on the grouting pipe 2 or the grout overflow pipe 18 or the grout discharge pipe 56, and the seventh through hole 19 is covered by the blasting piece. When the blasting element 6 reaches the blasting pressure, the blasting element 6 is blasted so that the seventh through hole 19 becomes a free hole for the grouting to flow out.

The grouting type expansion head bag anchor rod further comprises a first locking hoop 21 and a second locking hoop 20. The first locking band 21 is locked circumferentially upstream of the seventh through hole 19. The second locking band 20 is locked circumferentially downstream of the seventh through hole 19. In this case, the use of the first locking band 21 and the second locking band 20 can prevent cement mortar from overflowing from the pocket space between the blasting piece 6 and the grout injection pipe 2 or the grout overflow pipe 18 or the grout discharge pipe before the blasting piece 6 is blasted, therefore, the cement mortar in the flexible bearing bag 1 can be guaranteed to be smoothly blasted by the blasting piece 6 when the blasting pressure of the blasting piece 6 is reached, namely, the arrangement of the first locking hoop 21 and the second locking hoop 20 can guarantee the filling strength of the cement mortar in the flexible bearing bag 1, thereby further ensuring that when the flexible bearing bag 1 generates a pressing acting force F2 between the flexible bearing bag and the reducing interface 54 between the anchor hole excavation section 37 and the anchor hole rotary spraying section 39, the stability of the pressing acting force F2 avoids the problem that the pressing acting force is weakened due to the fact that cement mortar in the flexible bearing bag 1 is filled with less-dense cement mortar, and even the cement mortar in the flexible bearing bag 1 collapses to reduce the anti-pulling performance of the flexible bearing bag.

Wherein, the check valve is a spring-bead type check valve, and the spring-bead type check valve comprises a bead 48, a valve sleeve 51 and a cylindrical spring 50. The inner side of the end of the grouting pipe 2 or the overflow pipe 18 or the slurry discharge pipe 56 is provided with a conical contact surface 49 with the inner diameter increasing from inside to outside. The valve sleeve 51 is sleeved on the periphery of the grouting pipe 2 or the grout overflow pipe 18 or the grout discharge pipe 56, so that a second accommodating space is formed between the conical contact surface 49 and the valve sleeve 51. The diameter of the bead 48 is smaller than the inner diameter of the valve sleeve 51, the diameter of the bead 48 is larger than the inner diameter of the grouting pipe 2 or the overflow pipe 18 or the mud discharging pipe 56, and the inner diameter of the cylindrical spring 50 is smaller than the diameter of the bead 48. One end of the cylindrical spring 50 is supported or fixedly connected to the supporting surface of the valve housing 51, and the bead 48 is embedded in the other end of the cylindrical spring 50. An eighth through hole 52 is formed on a side wall of the valve housing 51. When the cylindrical spring 50 has a minimum compression, the beads 48 abut against the conical contact surface 49 to close the end of the grouting pipe 2 or the overflow pipe 18 or the discharge pipe 56; when the bead 48 moves to the bearing surface of the valve sleeve 51 to make the eighth through hole 52 clear due to the pressure, the grouting pipe 2 or the grout overflow pipe 18 or the grout discharge pipe 56 is communicated with the outside through the eighth through hole 52.

The position of the eighth through hole 52 on the side wall of the valve housing 51 is adjustable according to the opening pressure of the spring-bead type one-way valve and the stiffness coefficient of the cylindrical spring 50, so as to adapt to different opening pressures.

Wherein the inner diameter of valve sleeve 51 is less than three times the diameter of the beads. In this case, the beads can be prevented from falling out of the valve housing 51.

Wherein, the valve sleeve 51 is fixedly connected to the periphery of the grouting pipe 2 or the overflow pipe 18 or the slurry discharge pipe 56.

Wherein the valve sleeve 51 is detachably connected to the outer circumference of the injection pipe 2 or the overflow pipe 18 or the discharge pipe 56 by a screw or a snap.

Wherein, the check valve is a check type check valve 44, the check type check valve 44 comprises a sleeving section and a joint section, the sleeving section is fixedly connected with the joint section, the inner diameter of the joint section is gradually reduced from the sleeving section to the free end, wherein the sleeving section is sleeved on the valve sleeve 51 and sleeved on the periphery of the grouting pipe 2 or the overflow pipe 18 or the slurry discharge pipe 56.

Wherein, the joint section is detachably jointed by the self-characteristic of the material, so that when the check-type check valve 44 has no fluid passing through the inside, the joint section is jointed to close the terminal end of the grouting pipe 2 or the overflow pipe 18 or the grout discharge pipe 56; when the check type check valve 44 has fluid passing through the inside, the joint sections are separated by the fluid to make the grouting pipe 2 or the overflow pipe 18 or the discharge pipe 56 communicate with the outside.

Wherein, slip casting formula enlarged footing bag formula stock still includes blast pipe 53 and discharge valve 45. The exhaust pipe 53 is inserted into the fifth through hole 17. The exhaust valve 45 is fitted over the exhaust pipe 53 through its closed end. The sleeving section of the exhaust pipe 53 and the exhaust valve 45 are both provided with a plurality of exhaust holes 46, so that the inner cavity of the flexible bearing bag 1 is communicated with the outside through the exhaust holes 46 and the exhaust pipe 53 to exhaust.

Wherein, the end of the grouting pipe 2 is provided with a first one-way valve, the end of the grout discharging pipe 56 is provided with a second one-way valve, and the end of the grout overflowing pipe is provided with a third one-way valve. The opening pressure of the first one-way valve is smaller than that of the second one-way valve, and the opening pressure of the second one-way valve is smaller than that of the third one-way valve.

Wherein, the flexible bearing bag 1 is made of air-permeable material or air-impermeable material. When flexible bearing bag 1 was made by ventilative material, can get rid of the inside remaining gas of slip casting at the slip casting in-process for bearing bag 1 after the slip casting is more closely knit.

Wherein the flexible bearing capsular bag 1 has a non-uniform diameter in the axial direction, wherein some radial cross-sectional diameters are smaller and other radial cross-sectional diameters are larger. Under the condition, the flexible bearing bag 1 can bear multiple stress at the reducing part, so that the pulling resistance of the grouting type expanded head bag type anchor rod is further ensured.

The invention provides a variable-diameter grouting type enlarged head capsule anchor rod which comprises a fixed core 108, a movable sleeve 111, an expanding component and an expanding triggering mechanism. The movable sleeve 111 is sleeved on the periphery of the fixed core 108, and a moving pair is formed between the movable sleeve 111 and the fixed core 108; the diameter expanding assembly comprises a diameter expanding rod 102, a first movable connecting piece 104, a second movable connecting piece 105 and/or a third movable linking piece 106, wherein one end of the first movable connecting piece 104 is hinged to a movable sleeve 111, the other end of the first movable connecting piece 104 is hinged to the diameter expanding rod 102, one end of the second movable connecting piece 105 is hinged to a fixed core 108, the other end of the second movable connecting piece 105 is hinged to the diameter expanding rod 102, one end of the third movable connecting piece 106 is hinged to a movable sleeve 5, the other end of the third movable connecting piece 106 is hinged to the diameter expanding rod 102, the diameter expanding assembly comprises a plurality of groups, and the diameter expanding assembly is arranged on the periphery of the movable sleeve 111 along the circumferential direction of the movable sleeve 111; the expanding trigger mechanism is used for releasing potential energy to enable the movable sleeve 111 to move downwards relative to the fixed core 108.

The manner in which "and/or" is applied herein, in fact, defines three implementations:

the first method comprises the following steps: only the third movable connecting piece 106 is used, but not the second movable connecting piece 105, in this case, during the axial movement of the movable sleeve 111 relative to the fixed core 108, because the downward movement limiting mechanism of the movable sleeve 111, i.e. the hinge point between the second movable connecting piece 105 and the fixed core 108, is lost, the normal diameter expansion of the variable-diameter grouting type enlarged head capsule anchor rod can be realized only after the contact with the ground by virtue of the diameter expansion rod 102, or in the embodiment with the protective head 9, the downward movement of the movable sleeve 111 is limited by virtue of the connecting point between the protective head 9 and the fixed core 108.

And the second method comprises the following steps: only the second movable connecting piece 105 and no third movable connecting piece 106 are provided, in this case, during the axial movement of the movable sleeve 111 relative to the fixed core 108, since the downward movement of the movable sleeve 111 is limited by the hinge point between the second movable connecting piece 105 and the fixed core 108, the limit position of the downward movement of the movable sleeve 111 relative to the fixed core 108 is the hinge point between the second movable connecting piece 105 and the fixed core 108, and thereafter, if the movable sleeve 111 continues to be subjected to a downward acting force relative to the fixed core 108, the diameter expanding assembly can be triggered to realize stable diameter expansion.

And the third is that: both the second movable connecting piece 105 and the third movable connecting piece 106 are provided, in this case, on one hand, during the axial movement of the movable sleeve 111 relative to the fixed core 108, since the downward movement of the movable sleeve 111 is limited by the hinge point between the second movable connecting piece 105 and the fixed core 108, the limit position of the axial downward movement of the movable sleeve 111 relative to the fixed core 108 is the hinge point between the second movable connecting piece 105 and the fixed core 108, and thereafter, if the movable sleeve 111 continues to be subjected to downward acting force relative to the fixed core 108, the diameter expanding assembly can be triggered to realize stable diameter expansion; on the other hand, in this embodiment, the hinge point between the second movable link 105 and the diameter-expanding rod 102 and the hinge point between the third movable link 106 and the diameter-expanding rod 102 may be the same hinge point, and in this case, the joint action of the second movable link 105 and the third movable link 106 can make the rotation of the first movable link 104, the second movable link 105, and the third movable link 105 more stable, thereby making the diameter-expanding operation of the diameter-expanding rod 102 more stable.

The diameter expansion triggering mechanism comprises a first connecting piece 109, a second connecting piece 107, an elastic part 110 and a connecting rod 101. The first connecting piece 109 is fixedly connected to the fixed core 108 in the radial direction, the second connecting piece 107 is fixedly connected to the movable sleeve 111 in the radial direction, the elastic member 110 is arranged between the first connecting piece 109 and the second connecting piece 107, and the connecting rod 101 is detachably connected between the first connecting piece 109 and the second connecting piece 107. Wherein the elastic member 110 is in a compressed state when the connecting rod 101 is connected between the first connecting piece 109 and the second connecting piece 107.

Wherein the detachable connection is a threaded connection.

The variable-diameter grouting type enlarged head capsule anchor rod further comprises a flexible stirrup 103, and the flexible stirrup 103 is wound on the periphery of the enlarged rod 102.

Wherein, the variable-diameter grouting type enlarged head capsule anchor rod further comprises a flexible bearing capsule 1, a first hoop member 7 and a second hoop member 8. The first clamping piece 7 is provided with a first through hole 15, a second through hole 16 and a ninth through hole 114 along the axial direction, the second clamping piece 8 is provided with a third through hole 35 along the axial direction, and the axes of the first through hole 15 and the third through hole 35 are aligned; one end of the flexible bearing bag 1 is tied on the first fastening piece 7, and the other end of the flexible bearing bag 1 is tied on the second fastening piece 8; the fixed core 108 is simultaneously inserted into the first through hole 15 and the third through hole 35, the connecting rod 101 is inserted into the ninth through hole 114, and a sliding pair is formed between the connecting rod 101 and the inner wall of the ninth through hole 114.

The utility model provides a slip casting formula enlarged footing bag formula stock includes rigidity cage 12, first connecting piece and second connecting piece, and first connecting piece sets up in the upper portion of rigidity cage 12, and the second connecting piece sets up in the lower part of rigidity cage 12, is equipped with on the first connecting piece and wears to establish the hole, supplies slip casting pipe 2 to wear to establish.

Wherein, rigidity cage 12 includes warp direction rib and latitudinal direction rib, and the warp direction rib sets up along the axial, and many warp direction ribs are arranged on same circumference, and the one end fixed connection of many warp direction ribs is in first connecting piece, and the other end fixed connection of many warp direction ribs is in the second connecting piece, and the latitudinal direction rib twines along first circumference and ties up in the warp direction rib periphery for warp direction rib and latitudinal direction rib constitute rigidity cage 12.

Wherein, rigidity cage 12 includes radial rib and stirrup, and the warp direction rib sets up along the axial, and many warp direction ribs are arranged on same circumference, and the one end fixed connection of many warp direction ribs is in first connecting piece, and the other end fixed connection of many warp direction ribs is in the second connecting piece, and the stirrup is the heliciform and twines the periphery of tying up in the warp direction rib for warp direction rib and stirrup constitute rigidity cage 12.

The radial ribs are used for ensuring the axial bearing capacity of the rigid cage 12, and the latitudinal ribs or the hooping ribs try to ensure the radial bearing capacity of the rigid cage, so that the bearing capacity of the grouting type expanded-head bag-type anchor rod is more stable.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A grouting type expansion head bag type anchor rod is characterized by comprising a flexible bearing bag (1), a first fastening piece (7), a second fastening piece (8) and a grouting pipe (2),

the bottom of the grouting pipe (2) is provided with a one-way valve.

2. The grouting type enlarged head capsule anchor rod according to claim 1, further comprising a guide tube (4), wherein one end of the guide tube (4) is fixedly connected to the first fastening member (7), and the other end of the guide tube is fixedly connected to the second fastening member (8), wherein the axes of the first through hole (15), the guide tube (4) and the third through hole (35) are aligned, so that a communicated first accommodating space is formed in the first through hole (15), the guide tube (4) and the third through hole (35).

3. The grouting type enlarged head capsule anchor rod as claimed in claim 1,

the first clamping part (7) comprises a first connecting part (14), a first inner clamping ring (23) and a first outer clamping ring (24),

the axes of the first inner and outer gripping rings (23, 24) are aligned such that one end of the flexible carrier pouch (1) is compressed between the outer wall of the first inner gripping ring (23) and the inner wall of the first outer gripping ring (24),

the first inner clamping ring (23) and the first outer clamping ring (24) are fixedly connected to the first connecting piece (14) through the upper edges of the first inner clamping ring and the first outer clamping ring;

the first through hole (15) and the second through hole (16) are arranged on the first connecting piece (14) along the axial direction.

4. The grouting type enlarged head capsule anchor rod of claim 3, wherein a first limit flange (22) is arranged on the first connecting piece (14), so that a first limit groove is formed on the first connecting piece (14) through the first limit flange (22), the axis of the first limit flange (22) is aligned with the axis of the first connecting piece (14), and the first inner hoop (23) and the first outer hoop (24) are embedded in the first limit groove.

5. The grouting type enlarged head capsule anchor rod as claimed in claim 1, wherein the check valve is a spring-bead type check valve comprising a bead (48), a valve housing (51) and a cylindrical spring (50),

the inner side of the terminal of the grouting pipe (2) or the grout overflow pipe (18) or the grout discharge pipe (56) is a conical contact surface (49) with the inner diameter increasing from inside to outside,

the valve sleeve (51) is sleeved on the periphery of the grouting pipe (2) or the slurry overflow pipe (18) or the slurry discharge pipe (56), so that a second accommodating space is formed between the conical contact surface (49) and the valve sleeve (51),

the diameter of the bead (48) is smaller than the inner diameter of the valve sleeve (51), the diameter of the bead (48) is larger than the inner diameter of the grouting pipe (2) or the overflow pipe (18) or the mud discharging pipe (56), the inner diameter of the cylindrical spring (50) is smaller than the diameter of the bead (48),

one end of the cylindrical spring (50) is supported on or fixedly connected with the supporting surface of the valve sleeve (51), the bead (48) is embedded at the other end of the cylindrical spring (50),

an eighth through hole (52) is arranged on the side wall of the valve sleeve (51),

when the cylindrical spring (50) has the minimum compression amount, the beads (48) are abutted against the conical contact surface (49) so that the terminal end of the grouting pipe (2) or the overflow pipe (18) or the grout discharge pipe (56) is closed; when the bead (48) moves to the bearing surface of the valve sleeve (51) to make the eighth through hole (52) out due to pressure, the grouting pipe (2) or the grout overflow pipe (18) or the grout discharge pipe (56) is communicated with the outside through the eighth through hole (52).

6. The grouting type enlarged head capsule anchor rod of claim 5, wherein the setting position of the eighth through hole (52) on the side wall of the valve sleeve (51) is adjustable according to the opening pressure of the spring-bead type one-way valve and the coefficient of stiffness of the cylindrical spring (50).

7. A slip casting type enlarged head capsule anchor rod according to claim 5, characterized in that the inner diameter of the valve housing (51) is less than three times the diameter of the bead (48).

8. A grouting type enlarged head capsule anchor rod as claimed in claim 5, characterized in that said valve sleeve (51) is fixedly connected to the periphery of said grouting pipe (2) or grout overflow pipe (18) or grout discharge pipe (56).

9. A grouting type enlarged head capsule anchor rod as claimed in claim 5, characterized in that said valve sleeve (51) is detachably connected to the periphery of said grouting pipe (2) or said overflow pipe (18) or said grout discharge pipe (56) by means of screw threads or snap fasteners.

10. A slip casting type enlarged head capsule anchor rod according to claim 1, further comprising a head protector (9), the bottom end of the head protector (9) having a tip end, the head protector (9) being fixedly connected to the lower surface of the second fastening member (8) by its upper edge.