CN113090308B

CN113090308B - Anchor bolt support construction device

Info

Publication number: CN113090308B
Application number: CN202110484189.6A
Authority: CN
Inventors: 王子越; 罗超; 姜鹏飞; 郭吉昌; 韦尧中; 刘畅; 陈志良; 曹晓明; 杨建威
Original assignee: Tiandi Science and Technology Co Ltd; CCTEG Coal Mining Research Institute
Current assignee: Tiandi Science and Technology Co Ltd; CCTEG Coal Mining Research Institute
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2024-02-06
Anticipated expiration: 2041-04-30
Also published as: CN113090308A

Abstract

The invention relates to the technical field of coal mine roadway support, in particular to an anchor bolt support construction device. The anchor bolt support construction device comprises a base, a first shaft, a driver and a second shaft, wherein the first shaft is rotatably arranged on the base, the driver is connected with the first shaft so as to drive the first shaft to rotate, and the second shaft is movably inserted into the first through hole along the axial direction of the second shaft. The stock includes body of rod, drill bit, pretension nut and stopper, is equipped with the third through-hole that link up along its axial on the body of rod, and the third through-hole can communicate with every second through-hole. The check valve comprises a valve body, a valve core and an annular magnet, wherein the valve body is provided with a valve cavity, an inlet and an outlet which are communicated with the valve cavity, the valve core is provided with a first position and a second position, when the valve core is positioned at the first position, the valve core is abutted against the valve seat, and when the valve core is positioned at the second position, the valve core is separated from the valve seat. The anchor bolt support construction device provided by the embodiment of the invention has the advantages of high anchor bolt support operation efficiency, low labor intensity of workers and the like.

Description

Anchor bolt support construction device

Technical Field

The invention relates to the technical field of coal mine roadway support, in particular to an anchor bolt support construction device.

Background

The anchor bolt support can effectively control the deformation of surrounding rock, and has been widely applied in the fields of domestic and foreign coal mines, metal mines and the like. Taking coal mine roadway support as an example, the existing anchor bolt support process flow is as follows: drilling holes in surrounding rock of a coal mine roadway by using a drill rod, manually plugging the anchoring agent into the drilled holes, placing the anchoring agent into the holes for stirring, and pre-tightening the anchoring agent after the anchoring agent is solidified. The anchor bolt support construction process in the related art has the following problems:

1) After drilling, surrounding rock is easy to collapse under the action of mining stress, the step of manually plugging the anchoring agent into the drilling is difficult, and particularly when the coal rock mass is broken or the wall of the drilling hole is uneven, a certain time is required to be consumed for installing the anchoring agent, so that the supporting efficiency is reduced;

2) The three steps of drilling, installing anchoring agent and pre-tightening the anchor rod are completed by means of different tools, the switching time for disassembling the drill rod and the different tools is long, the efficiency is low, the labor intensity of workers is high, and the requirement of quick support of a coal mine roadway cannot be met.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

Therefore, the embodiment of the invention provides the anchor bolt support construction device with high anchor bolt support efficiency.

The anchor bolt support construction device according to the embodiment of the invention comprises

A first shaft rotatably mounted on the base, the first shaft having first and second ends opposite to each other in an axial direction thereof, the first shaft being provided with a first through hole penetrating therethrough in the axial direction thereof;

the driver is connected with the first shaft so as to drive the first shaft to rotate;

the second shaft is movably inserted in the first through hole along the axial direction of the second shaft, the second shaft is provided with an initial position adjacent to the first end of the first shaft, at least one part of the second shaft is in sealing fit with the first through hole, a plurality of second through holes penetrating along the axial direction of the second shaft are formed in the second shaft, the second through holes are arranged at intervals, a check valve is arranged in each second through hole, and the opening direction of the check valve is the direction from the second end to the first end;

the check valve comprises a valve body, a valve core and a ring magnet, wherein the valve body is provided with a valve cavity, an inlet and an outlet which are communicated with the valve cavity, the valve cavity extends along the axial direction of the valve body, the inlet and the outlet are respectively arranged at two ends of the axial direction of the valve body, a valve seat is arranged in the valve cavity, the valve core is movably arranged in the valve cavity along the axial direction of the valve body, the valve core is provided with a first position and a second position, the first position is arranged adjacent to the inlet, the second position is arranged adjacent to the outlet, when the valve core is positioned at the first position, the valve core is stopped against the valve seat, when the valve core is positioned at the second position, the valve core is separated from the valve seat so as to enable the inlet to be communicated with the outlet, the ring magnet is arranged in the valve cavity, and the ring magnet is coaxial with the valve body, and at least one part of the valve core is made of ferromagnetic material, so that the valve core can move from the second position to the first position through the magnetic force effect between the valve core and the ring magnet;

The anchor rod comprises a rod body, a drill bit, a pre-tightening nut and a limiting block, wherein the rod body is coaxial with the first shaft, a third through hole which is communicated with each second through hole along the axial direction of the rod body is formed in the rod body, and the third through hole can be communicated with each second through hole so that fluid flows into the third through holes through the second through holes;

the rod body is spaced from the second shaft in the axial direction of the rod body, the rod body is arranged adjacent to the first end of the first shaft relative to the second shaft in the axial direction of the rod body, the limiting block is arranged between the pre-tightening nut and the second shaft in the axial direction of the rod body, the outer circumferential surface of the rod body is provided with external threads, the pre-tightening nut is in threaded fit on the rod body and is in sealing connection with the first shaft, the limiting block is movably arranged in the first through hole in the axial direction of the first shaft and is connected with the rod body, each of the pre-tightening nut and the limiting block is provided with a first surface and a second surface which are opposite in the axial direction of the rod body, when the first shaft drives the pre-tightening nut to rotate in the first direction, the first shaft drives the pre-tightening nut to rotate in the second direction opposite to the first axis, and the pre-tightening nut can push the first end of the limiting block against the second shaft in the axial direction, and the first end of the limiting block can push the first end of the rod body in the second axial direction.

The anchor bolt support construction device provided by the embodiment of the invention has the advantages of high anchor bolt support operation efficiency, low labor intensity of workers and the like.

In some embodiments, the device further comprises a return spring mounted between the base and the second shaft such that the return spring provides a return spring force to the second shaft toward the first end of the first shaft.

In some embodiments, the second shaft includes a first portion and a second portion, the first portion is inserted in the first through hole in a sealing manner, the second portion extends out of the first through hole, a rotation stopping block is disposed on one of an outer peripheral surface of the second portion and the base, a rotation stopping groove is disposed on the other of the outer peripheral surface of the second portion and the base, the rotation stopping block is inserted in the rotation stopping groove, and the reset elastic member is disposed on the second portion.

In some embodiments, the anti-rotation block is a key and the anti-rotation groove is a keyway that mates with the key.

In some embodiments, the device further comprises a stop ring connected with the base, the stop ring is spaced apart from the rotation stop block in the axial direction of the second shaft, the stop ring is sleeved on the second portion, the reset elastic piece is a pressure spring, the rotation stop block is arranged on the outer peripheral surface of the second portion, and the pressure spring is in pressing fit between the rotation stop block and the stop ring.

In some embodiments, the stop ring is position-adjustable in the axial direction of the second shaft in order to adjust the preload of the compression spring.

In some embodiments, the device further comprises an adjusting cylinder, the adjusting cylinder is sleeved on the second part, the adjusting cylinder is connected with the base, an external thread is arranged on the outer peripheral surface of the adjusting cylinder, and the baffle ring is an adjusting nut matched with the adjusting cylinder.

In some embodiments, the ring magnet is mounted on a magnet mounting plate that is mounted within the valve cavity to mount the ring magnet within the valve cavity.

In some embodiments, the magnet mounting plate is made of ferromagnetic material such that the ring magnet is mounted on the magnet mounting plate by the magnetic force between the ring magnet and the magnet mounting plate.

In some embodiments, the valve further comprises a limiting block, the limiting block is connected with the valve core, a first limiting part is arranged on the limiting block, a second limiting part is arranged in the valve cavity, and the first limiting part can be abutted against the second limiting part when the valve core is positioned at the second position; the first limiting part is positioned between the valve core and the inlet in the axial direction of the valve body, and the second limiting part is positioned between the valve core and the first limiting part in the axial direction of the valve body.

Drawings

Fig. 1 is a perspective view of an anchor bolt support construction apparatus according to one embodiment of the present invention.

Fig. 2 is a left side view of an anchor bolt support construction apparatus according to one embodiment of the present invention.

Fig. 3 is a cross-sectional view of an anchor bolt support construction apparatus according to one embodiment of the present invention.

Fig. 4 is an enlarged view at a in fig. 3.

Fig. 5 is a schematic view of the construction of the anchor rod of fig. 1.

Fig. 6 is a schematic view of the second shaft of fig. 1 at an end remote from the anchor.

Fig. 7 is a front view of the check valve of fig. 3.

Fig. 8 is a C-C cross-sectional view of fig. 7.

Fig. 9 is a top view of the check valve of fig. 3.

Reference numerals: the anchor bolt support construction device 1000; a base 1; a base 1001; a mounting base 1002; a bearing 1003; a driver 2; a first transmission member 31; a second transmission member 32; a first seal 41; a second seal 42; a check valve 5; a valve chamber 50; a valve body 51; an inlet 511; an outlet 512; a spool 52; a spool body 521; a columnar connection segment 522; a ring magnet 53; a valve seat 54; a first end 55; a second end 56; a first stopper 57; a second limit portion 58; a magnet mounting plate 59; a rotation stopping frame 6; an elastic member 7; a baffle ring 8; an adjustment cylinder 801; an adjusting rack 802; a bolt 9; a stopper 91; a pretension nut 92; a center-aligning ball pad 93; a tray 94; a rod body 95; a first end 951; a second end 952; a third through hole 953; truncated cone hole section 9531; a drill 96; a first shaft 10; a first end 101; a second end 102; a first through hole 103; a second shaft 20; a first end 201; a second end 202; a second through hole 203; a first portion 204; a second portion 205; and a rotation stop block 206.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 to 9, the anchor bolt supporting construction apparatus 1000 according to the embodiment of the present invention includes a base 1, a driver 2, a first shaft 10, a second shaft 20, and an anchor bolt 9.

The first shaft 10 is rotatably mounted on the base 1, the first shaft 10 having a first end 101 and a second end 102 opposite to each other in the axial direction thereof, the first shaft 10 being provided with a first through hole 103 penetrating therethrough in the axial direction thereof.

The driver 2 is connected to the first shaft 10 to drive the first shaft 10 to rotate.

The second shaft 20 is movably inserted in the first through hole 103 in the axial direction thereof, and the second shaft 20 has an initial position adjacent to the first end 101 of the first shaft 10. At least a part of the second shaft 20 is in sealing fit with the first through hole 103, a plurality of second through holes 203 penetrating along the axial direction of the second shaft 20 are arranged on the second shaft 20, the plurality of second through holes 203 are arranged at intervals, each second through hole 203 is internally provided with a check valve 5, and the opening direction of the check valve 5 is the direction from the second end 102 to the first end 101.

The check valve 5 includes a valve body 51, a spool 52, and a ring magnet 53. The valve body 51 has a valve chamber 50 and an inlet 511 and an outlet 512 communicating with the valve chamber 50, the valve chamber 50 extends in the axial direction of the valve body 51, the inlet 511 and the outlet 512 are provided at both ends in the axial direction of the valve body 51, a valve seat 54 is provided in the valve chamber 50, and the valve core 52 is movably installed in the valve chamber 50 in the axial direction of the valve body 51. The spool 52 has a first position and a second position, the first position and the second position being arranged in the axial direction of the valve body 51, the first position being provided adjacent to the inlet 511, the second position being provided adjacent to the outlet 512. Wherein, when the valve core 52 is positioned at the first position, the valve core 52 is stopped against the valve seat 54; when the spool 52 is in the second position, the spool 52 is away from the valve seat 54 to communicate the inlet 511 with the outlet 512, the ring magnet 53 is mounted in the valve chamber 50, the ring magnet 53 is coaxial with the valve body 51, and at least a portion of the spool 52 is made of a ferromagnetic material so that the spool 52 moves from the second position to the first position by the magnetic force between it and the ring magnet 53.

The anchor rod 9 includes a rod body 95, a drill 96, a pretension nut 92 and a stopper 91. The rod 95 is coaxial with the first shaft 10. The rod body 95 is provided with a third through hole 953 penetrating in the axial direction thereof, and the third through hole 953 can communicate with each of the second through holes 203 so that fluid flows into the third through hole 953 through the second through holes 203.

The rod 95 is spaced apart from the second shaft 20 in its axial direction, the rod 95 being disposed adjacent to the first end 101 of the first shaft 10 opposite the second shaft 20 in its axial direction, the stopper 91 being located between the pretension nut 92 and the second shaft 20 in the axial direction of the rod 95.

The outer circumferential surface of the rod body 95 is provided with external threads, and the pre-tightening nut 92 is in threaded fit on the rod body 95 and is in sealing connection with the first shaft 10. The stopper 91 is movably provided in the first through hole 103 in the axial direction of the first shaft 10 and is connected to the rod body 95. Each of the pretension nut 92 and the stopper 91 has a first face and a second face that are opposed in the axial direction of the anchor rod 9. When the first shaft 10 drives the pretension nut 92 to rotate along the first direction, the first surface of the limiting block 91 abuts against the second surface of the pretension nut 92, so that the pretension nut 92 drives the rod body 95 to rotate along the first direction. When the first shaft 10 drives the pretension nut 92 to rotate in a second direction opposite to the first direction, the pretension nut 92 applies a pretension force to the rod body 95 back to the first end 101 of the first shaft 10, and the stopper 91 can push the second shaft 20 to move the second shaft 20 back to the first end 101 of the first shaft 10.

The process of performing the anchor bolt supporting operation by the anchor bolt supporting construction device 1000 according to the embodiment of the present invention is as follows:

First, the driver 2 is used to drive the first shaft 10 to rotate in a first direction, the pretension nut 92 is driven to rotate in the first direction by the first shaft 10, and the pretension nut 92 is used to drive the rod body 95 to rotate in the first direction, so that drilling is performed by the drill 96 of the anchor rod 9. During the drilling process, high pressure water is introduced into at least one second through hole 203 of the second shaft 20, which enters the third through hole 953 through the check valve 5 and flows out from the drill bit 96 to discharge the cinder. The high-pressure water does not flow out due to the seal between the second shaft 20 and the first through hole 103 and the seal between the anchor rod 9 and the first through hole 103.

After the drilling is completed, the driver 2 stops rotating, and simultaneously, the high-pressure water is stopped from flowing into the second through hole 203. Into the at least one second through hole 203, an anchoring agent is passed through the non-return valve 5 into the third through hole 953 and finally into the third through hole 953 of the shank 95 of the rock bolt 9 and the gap between the shank 95 and the surrounding rock. The anchoring agent does not outflow due to the seal between the second shaft 20 and the first through hole 103 and the seal between the anchor rod 9 and the first through hole 103. After a predetermined amount of anchoring agent is introduced into the borehole through the third through hole 953, the introduction of the anchoring agent into the third through hole 953 is stopped.

Finally, after the anchoring agent in the drilled hole is solidified, the driver 2 is used for driving the first shaft 10 to rotate along the second direction, and the first shaft 10 is used for driving the pre-tightening nut 92 to rotate along the second direction, so that the pre-tightening nut 92 applies pre-tightening tension to the rod body 95 back to the first end 101 of the first shaft 10, and pre-tightening of the anchor rod 9 is realized. During the pre-tightening process, each of the rod body 95 and the limiting block 91 moves towards the first end 101 of the first shaft 10, and the limiting block 91 can push the second shaft 20 to move away from the first end 101 of the first shaft 10, so that the second shaft 20 does not influence the pre-tightening of the anchor rod 9.

Thus, drilling, anchoring and pre-tightening operations in the anchor bolt supporting operation can be realized by using the anchor bolt supporting construction device 1000 according to the embodiment of the invention, a drill rod is not required to be disassembled in the operation process, and switching of different machines is not required. Compared with the anchor bolt supporting operation in the related art, the method not only effectively shortens the operation time and improves the anchor bolt supporting operation efficiency, but also reduces the labor intensity of workers.

Further, the valve body 52 of the check valve 5 is brought into abutment with the valve seat 54 by the magnetic force acting between the valve body 52 and the ring magnet 53 to form a seal, and therefore, it is not necessary to provide another member between the valve body 52 of the valve chamber 50 and the outlet 512. Thus, the radial dimension between the spool 52 of the check valve 5 and the outlet 512 may be equal everywhere, or the radial dimension between the spool 52 of the check valve 5 and the outlet 512 may be maximized at any section between the spool 52 of the check valve 5 and the outlet 512, which is adjacent to the outlet 512, so that the solidified anchoring agent may be pushed out of the valve chamber 50 from the outlet 512 by a force toward the outlet 512. Further, when the anchor is conveyed next time by using the anchor bolt support construction device 1000, the valve body 52 is pushed toward the outlet 512 by the anchor bolt entering from the inlet 511, and the solidified anchor bolt can be pushed out from the outlet 512 by the valve body 52, so that the outlet 512 is finally communicated with the inlet 511, thereby ensuring smooth conveyance of the anchor bolt.

Therefore, the anchor bolt support construction device 1000 according to the embodiment of the invention has the advantages of high anchor bolt support operation efficiency, low labor intensity of workers and the like.

When the anchoring agent is injected into the borehole through the second through-hole 203, the anchoring agent finally flows into the borehole through the second through-hole 203, the check valve 5, the first through-hole 103 and the third through-hole 953 in this order. According to the anchor bolt support construction device 1000 of the embodiment of the invention, the second shaft 20 is utilized to move along the axial direction of the second shaft 20, and the initial position of the second shaft 20 can be arranged closer to the anchor bolt 9, so that the amount of anchoring agent in the first through hole 103 can be reduced, and the amount of the anchoring agent is saved; and the thickness of the anchoring agent in the first through hole 103 can be reduced, so that the first through hole 103 is prevented from being blocked by the anchoring agent after solidification in the first through hole 103 after solidification of the anchoring agent, and the next operation of the anchor bolt support construction device 1000 is prevented from being influenced.

An anchor bolt support construction apparatus 1000 according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 9.

The anchor bolt support construction apparatus 1000 includes a base 1, a driver 2, a first shaft 10, a second shaft 20, and an anchor bolt 9.

For example, as shown in fig. 1 to 4, the axial direction of the first shaft 10 coincides with the left-right direction, the base 1 includes a base 1001 and a mount 1002, the mount 1002 is connected to the right end of the base 1001, a mounting hole is provided in the mount 1002, the first end 101 (right end) of the first shaft 10 is mounted in the mounting hole through a bearing 1003, and the second end 102 (left end) of the first shaft 10 is provided in a cantilever manner. Wherein the first shaft 10, the bearing 1003 and the mounting hole are all coaxially arranged. The left-right direction is shown by arrow B in fig. 2.

The driver 2 is connected to the first shaft 10 to drive the first shaft 10 to rotate. The driver 2 may be one of an electric machine, a hydraulic motor, a cylinder and an internal combustion engine.

In some embodiments, the bolting construction device 1000 further comprises a first transmission member 31 and a second transmission member 32, the first transmission member 31 being connected to the first shaft 10, the first transmission member 31 being connected to the driver 2, the second transmission member 32 being connected to the second transmission member 32. Thereby, the connection of the drive 2 to the first shaft is facilitated by means of the first transmission member 31 and the second transmission member 32.

Preferably, each of the first and second transmission members 31 and 32 is a gear, and the first and second transmission members 31 and 32 are engaged.

Of course, in other embodiments, one of the first transmission member 31 and the second transmission member 32 may be a worm wheel, and the other of the first transmission member 31 and the second transmission member 32 may be a worm screw that mates with the worm wheel.

The second shaft 20 is movably inserted in the first through hole 103 along the axial direction thereof, the second shaft 20 has an initial position adjacent to the first end 101 of the first shaft 10, at least a part of the second shaft 20 is in sealing fit with the first through hole 103, a plurality of second through holes 203 penetrating along the axial direction thereof are arranged on the second shaft 20, the plurality of second through holes 203 are arranged at intervals, a check valve 5 is arranged in each second through hole 203, and the opening direction of the check valve 5 is the direction from the second end 102 to the first end 101.

Specifically, as shown in fig. 2, the second shaft 20 has a first end 201 and a second end 202 opposite in the axial direction thereof, and the first end 201 of the second shaft 20 is disposed adjacent to the first end 101 of the first shaft 10 opposite in the axial direction thereof to the second end 202 of the second shaft 20.

Preferably, as shown in fig. 5, three second through holes 203 of the second shaft 20 are provided, wherein one second through hole 203 is filled with high-pressure water, and the other two second through holes 203 are filled with a component a and a component B of the anchoring agent, respectively.

In some embodiments, the anchor bolt support construction device 1000 further includes a first sealing member 41, a first sealing ring groove is provided on an outer circumferential surface of the second shaft 20, the first sealing member 41 is installed in the first sealing ring groove, and an outer circumferential surface of the first sealing member 41 is fitted with an inner circumferential surface of the first through hole 103.

The first sealing member 41 may be one of an O-ring, a V-ring, a J-frameless dust ring, and a Y-ring. For example, as shown in fig. 3 and 4, the first seal 41 is an O-ring.

Preferably, as shown in fig. 3 and 4, a first seal ring groove is disposed proximate the first end 201 of the second shaft 20. Thereby, the amount of the anchoring agent in the first through hole 103 can be further reduced, thereby further saving the amount of the anchoring agent.

In some embodiments, the anchor support construction device 1000 further includes a return spring 7, the return spring 7 being mounted between the base 1 and the second shaft 20 such that the return spring 7 provides a return spring force to the second shaft 20 towards the first end 101 of the first shaft 10.

Thereby, after the anchor rod 9 is pre-tensioned, the second shaft 20 can return to the initial position under the action of the reset elastic member 7, so that the anchor bolt supporting construction device 1000 performs the next working cycle, thereby being beneficial to further improving the anchor bolt supporting construction efficiency of the anchor bolt supporting construction device 1000.

In other embodiments, the return spring 7 may not be provided, and the second shaft 20 may be manually returned to the initial position.

Preferably, as shown in fig. 3 and 4, the second shaft 20 includes a first portion 204 and a second portion 205, the first portion 204 is sealingly inserted into the first through hole 103, the second portion 205 extends out of the first through hole 103, a rotation stop block 206 is provided on one of the outer peripheral surface of the second portion 205 and the base 1, a rotation stop groove is provided on the other of the outer peripheral surface of the second portion 205 and the base 1, the rotation stop block 206 is inserted into the rotation stop groove, and the reset elastic member 7 is provided on the second portion 205.

For example, the anchor bolt supporting construction device 1000 further includes a rotation stopping frame 6, the rotation stopping frame 6 is connected to the base 1, a rotation stopping block 206 is provided on one of the outer peripheral surface of the second portion 205 and the base 1, a rotation stopping groove is provided on the other of the outer peripheral surface of the second portion 205 and the base 1, and the rotation stopping block 206 is inserted into the rotation stopping groove. Of course, in other embodiments, the anti-rotation rack 6 may also be formed by a portion of the base 1.

Thus, the second shaft 20 is conveniently mounted on the base 1 using the rotation stop block 206 and the rotation stop groove.

In other embodiments, the second shaft 20 may be located entirely in the first through hole 103, and the rotation stopping frame 6 is disposed on the base 1, where the rotation stopping frame 6 extends into the first through hole 103, one of the second end 202 of the second shaft 20 and the rotation stopping frame 6 is provided with a rotation stopping block 206, and the other one of the second end 202 of the second shaft 20 and the rotation stopping frame 6 is provided with a rotation stopping groove, where the rotation stopping block 206 is inserted into the rotation stopping groove.

In some embodiments, the anti-rotation block 206 is a key and the anti-rotation slot is a keyway that mates with the key.

Preferably, as shown in FIG. 3, the anti-rotation block 206 is a spline and the anti-rotation groove is a spline groove. Of course, in other embodiments, the rotation stop block 206 may be a flat key, and the corresponding rotation stop groove may be a flat key groove that mates with the flat key.

Preferably, the anchor bolt supporting construction device 1000 further includes a retaining ring 8, the retaining ring 8 is connected with the base 1, the retaining ring 8 is spaced from the rotation stopping block 206 in the axial direction of the second shaft 20, the retaining ring 8 is sleeved on the second portion 205, the reset elastic member 7 is a compression spring, the rotation stopping block 206 is arranged on the outer peripheral surface of the second portion 205, and the compression spring is assembled between the rotation stopping block 206 and the retaining ring 8 in a pressing mode. Thereby, the installation of the return elastic member 7 is facilitated.

Preferably, the blocking ring 8 is positionally adjustable in the axial direction of the second shaft 20 in order to adjust the pretension of the compression spring.

Preferably, the anchor bolt support construction device 1000 further comprises an adjusting cylinder 801, the adjusting cylinder 801 is sleeved on the second portion 205, the adjusting cylinder 801 is connected with the base 1, external threads are arranged on the outer peripheral surface of the adjusting cylinder 801, and the baffle ring 8 is an adjusting nut matched with the adjusting cylinder 801. Thereby, the position adjustment of the retainer ring 8 is conveniently realized.

For example, the anchor bolt support construction apparatus 1000 further adjusts the frame 802, the frame 802 is connected to the base 1, the adjusting cylinder 801 is connected to the frame 802, and the retainer ring 8 is engaged with the adjusting cylinder 801. The distance between the stop ring 8 and the rotation stop block 206 can be adjusted by rotating the stop ring 8, so that the pretightening force of the compression spring can be adjusted.

As shown in fig. 5, the anchor rod 9 includes a rod body 95, a drill 96, a pretension nut 92, and a stopper 91. The rod 95 is coaxial with the first shaft 10. The rod body 95 is provided with a third through hole 953 penetrating in the axial direction thereof, and the third through hole 953 can communicate with each of the second through holes 203 so that fluid flows into the third through hole 953 through the second through holes 203. The third through hole 953 and each second through hole 203 being capable of communicating with each second through hole 203 means that: when fluid flows in the direction from the second end 102 to the first end 101, the check valve 5 is opened under fluid pressure so that the third through hole 953 communicates with the second through hole 203, so that fluid flows into the third through hole 953 through the second through hole 203; while fluid flows in a direction from the first end 101 to the second end 102, the check valve 5 closes such that the third through hole 953 is not in communication with the second through hole 203. The fluid may be high pressure water or an anchoring agent.

Preferably, the third through hole 953 includes a frustoconical section 9531, the frustoconical section 9531 being provided at an end of the shaft body 95 adjacent the second shaft 20. Of course, in other embodiments, the apertures of the third through holes 953 in the direction of their extension may be equal everywhere.

The rod 95 is spaced apart from the second shaft 20 in its axial direction, the rod 95 being disposed adjacent to the first end 101 of the first shaft 10 opposite the second shaft 20 in its axial direction, the stopper 91 being located between the pretension nut 92 and the second shaft 20 in the axial direction of the rod 95. The outer circumferential surface of the rod body 95 is provided with external threads, and the pre-tightening nut 92 is in threaded fit on the rod body 95 and is in sealing connection with the first shaft 10.

In some embodiments, the anchor bolt support construction device 1000 further includes a second seal member 42, wherein a second seal ring groove is formed on an inner peripheral surface of the first through hole 103, the second seal member 42 is installed in the second seal ring groove, and an inner peripheral surface of the second seal member 42 is fitted to an outer peripheral surface of the pretensioning nut 92.

The second sealing member 42 may be one of an O-ring, a V-ring, a J-frameless dust ring, and a Y-ring. For example, as shown in fig. 3 and 4, the second seal member 42 employs a Y-ring seal.

The stopper 91 is movably provided in the first through hole 103 in the axial direction of the first shaft 10 and is connected to the rod body 95. Each of the pretension nut 92 and the stopper 91 has a first face and a second face that are opposed in the axial direction of the anchor rod 9. When the first shaft 10 drives the pretension nut 92 to rotate along the first direction, the first surface of the limiting block 91 abuts against the second surface of the pretension nut 92, so that the pretension nut 92 drives the rod body 95 to rotate along the first direction. When the first shaft 10 drives the pretension nut 92 to rotate in a second direction opposite to the first direction, the pretension nut 92 applies a pretension force to the rod body 95 back to the first end 101 of the first shaft 10, and the stopper 91 can push the second shaft 20 to move the second shaft 20 back to the first end 101 of the first shaft 10.

The limiting block 91 being capable of pushing the second shaft 20 so that the second shaft 20 moves away from the first end 101 of the first shaft 10 means that: when the first driving shaft drives the pre-tightening nut 92 to rotate along the first direction, the limiting block 91 does not move along the axial direction of the first shaft 10, and at this time, the limiting block 91 does not push the second shaft 20 to enable the second shaft 20 to move back to the first end 101; when the first driving shaft drives the pretension nut 92 to rotate along the second direction, the pretension nut 92 applies pretension force to the rod body 95, the pretension nut 92 moves opposite to the rod body 95 and the second end 102 of the first shaft 10, correspondingly, the stopper 91 and the rod body 95 move opposite to the first end 101 of the first shaft 10, and in the process that the stopper 91 moves opposite to the first end 101 of the first shaft 10, the stopper 91 can push the second shaft 20 to move opposite to the first end 101 of the first shaft 10.

The anchor 9 further includes a centering ball pad 93 and a tray 94, each of the centering ball pad 93 and the tray 94 being provided with a through hole through which the rod body 95 passes, the tray 94 being abutted against the centering ball pad 93. The tray 94 is used for being attached to surrounding rock, and the aligning ball pad 93 is used for adjusting the positioning direction of the tray 94. The pre-tightening nut 92 is used for continuously pressing the tray 94 to pre-tighten the anchor rod 9.

Specifically, the rod 95 includes a first end 951 and a second end 952 that are opposite in the axial direction thereof, the second end 952 of the rod 95 is disposed adjacent to the second shaft 20 opposite to the first end 951 of the rod 95 in the axial direction thereof, the drill 96 is disposed on the first end 951 of the rod 95, and the tray 94, the centering ball pad 93, the pretension nut 92, and the stopper 91 are disposed adjacent to the second end 952 of the rod 95.

The limiting block 91 may be a limiting nut, the limiting block 91 is in threaded fit on the rod body 95, when the pre-tightening nut 92 rotates along the first direction, the first surface of the pre-tightening nut 92 abuts against the second surface of the limiting block 91, and the rotation moment applied by the pre-tightening nut 92 to the limiting block 91 is smaller than the rotation moment required by rotation of the limiting block 91 relative to the rod body 95, so that the limiting block 91 can be limited to the movement of the pre-tightening nut 92 towards the second end 952 of the rod body 95, and the pre-tightening nut 92 drives the rod body 95 to rotate along the axial direction.

In some embodiments, as shown in fig. 7-9, the check valve 5 includes a valve body 51, a valve spool 52, and a ring magnet 53.

The valve body 51 has a valve chamber 50, an inlet 511 and an outlet 512 communicating with the valve chamber 50, the valve chamber 50 extending in the axial direction of the valve body 51, the inlet 511 and the outlet 512 being provided at both axial ends of the valve body 51, respectively, and a valve seat 54 being provided in the valve chamber 50.

The spool 52 is movably installed in the valve chamber 50 in the axial direction of the valve body 51, and the spool 52 has a first position disposed adjacent to the inlet 511 and a second position disposed adjacent to the outlet 512. Wherein when the valve element 52 is in the first position, the valve element 52 is stopped against the valve seat 54, and when the valve element 52 is in the second position, the valve element 52 is separated from the valve seat 54 so as to communicate the inlet 511 with the outlet 512.

A ring magnet 53 is installed in the valve chamber 50, the ring magnet 53 being coaxial with the valve body 51, at least a portion of the valve spool 52 being made of a ferromagnetic material so that the valve spool 52 moves from the second position to the first position by a magnetic force between it and the ring magnet 53.

Before the fluid is introduced into the second through hole 203, the fluid may be high-pressure water or an anchoring agent with a certain pressure, and the valve core 52 is kept at the first position by the magnetic force between the ring magnet 53 and the valve core 52, so that the valve core 52 and the valve seat 54 are stopped to form a linear seal. In operation, fluid is positively introduced into the valve chamber 50 of the check valve 5 from the inlet 511, and the valve element 52 is moved from the first position to the second position away from the valve seat 54 by the action of the magnetic force between the valve element 52 and the ring magnet 53 by the pressure of the fluid, whereby the inlet 511 of the check valve 5 communicates with the outlet 512 and the check valve 5 opens to form a fluid passageway for the fluid to flow through. When the fluid is stopped from being supplied to the inlet 511 of the check valve 5, the valve body 52 is moved from the second position to the first position by the magnetic force between the ring magnet 53 and the valve body 52, and the valve body 52 and the valve seat 54 are stopped to form a line seal, thereby preventing the fluid from flowing back.

The spool 52 of the check valve 5 is brought into line-tight contact with the valve seat 54 by the magnetic force between the spool 52 and the ring magnet 53, and therefore, it is not necessary to provide other members such as a spring and a spring seat between the spool 52 of the valve chamber 50 and the outlet 512. Thus, the radial dimension between the spool 52 of the check valve 5 and the outlet 512 may be equal everywhere, or the radial dimension between the spool 52 of the check valve 5 and the outlet 512 may be maximized at any section between the spool 52 of the check valve 5 and the outlet 512, adjacent to the outlet 512, so that the solidified fluid may be pushed out of the valve chamber 50 through the outlet 512 by a force toward the outlet 512. Further, when the fluid is transported next time using the anchor support construction device 1000, the fluid entering from the inlet 511 pushes the valve body 52 in the direction of the outlet 512, the solidified fluid can be pushed out from the outlet 512 by the valve body 52, and finally the outlet 512 is communicated with the inlet 511, thereby ensuring smooth transport of the fluid.

Therefore, the check valve 5 has advantages such as good versatility.

Of course, in other embodiments, the check valve 5 may be a check valve in which a valve body is stopped against a valve seat by spring force in the related art.

The check valve 5 is described in detail below by taking fig. 7 to 9 as an example. The check valve 5 includes a valve body 51, a spool 52, and a ring magnet 53.

The valve body 51 has a valve chamber 50, and an inlet 511 and an outlet 512 which communicate with the valve chamber 50, the valve chamber 50 extending in the axial direction of the valve body 51, the inlet 511 and the outlet 512 being provided at both ends of the valve body 51 in the axial direction, respectively.

Specifically, as shown in fig. 8, the valve body 51 has a first end 55 and a second end 56 opposite in the axial direction thereof, and the valve body 51 defines the valve chamber 50. The first end 55 of the valve body 51 is disposed adjacent the anchor rod 9 opposite the second end 56.

In some embodiments, an inversion rim is provided at the first end 55, the inversion rim circumscribing the inlet 511, the inlet 511 having a smaller diameter than the radial dimension of the valve chamber 50 adjacent the inlet 511. The outlet 512 is provided at the second end 56, the bore of the outlet 512 being equal to the radial dimension of the valve chamber 50 adjacent the outlet 512.

Preferably, as shown in fig. 8, in some embodiments, a seal groove for mounting a seal ring is provided on the end surface of the varus edge remote from the first end 55, the seal groove being an annular groove. When the check valve 5 is used in connection with a pipe or other component, a sealing ring may be installed in the sealing groove to ensure tightness between the valve body 51 and the pipe or other component.

Of course, in other embodiments, the bore of the outlet 512 may be greater than the radial dimension of the valve chamber 50 adjacent the outlet 512. For example, the radial dimension of the valve chamber 50 adjacent the outlet 512 increases gradually in the direction from the inlet 511 to the outlet 512.

The spool 52 is movably installed in the valve chamber 50 in the axial direction of the valve body 51. The spool 52 has a first position disposed adjacent the inlet 511 and a second position disposed adjacent the outlet 512. A valve seat 54 is provided in the valve chamber 50, wherein the valve core 52 is stopped against the valve seat 54 when the valve core 52 is in the first position, and the valve core 52 is separated from the valve seat 54 when the valve core 52 is in the second position, so that the inlet 511 and the outlet 512 are communicated.

It is understood that the second position refers to a position of the valve spool 52 within the valve chamber 50 when the valve spool 52 is unseated from the valve seat 54, and thus the second position has a plurality.

In some embodiments, the valve spool 52 includes a spool body 521, the spool body 521 being a truncated sphere, the spool body 521 including an arcuate surface and a planar surface, the arcuate surface being disposed adjacent the inlet 511 in an axially opposite planar surface of the valve body 51, the arcuate surface being in abutment with the valve seat 54 when the valve spool 52 is in the first position.

Therefore, compared with the valve core 52 being a complete sphere, the size of the line seal to the outlet 512 is facilitated to be reduced, the thickness of the fluid sealed to the outlet 512 is facilitated to be reduced, and the thickness of the solidified fluid in the valve cavity 50 is further facilitated to be reduced, so that when the anchor rod support construction device 1000 is used for conveying the fluid next time, the valve core 52 is pushed by the fluid entering from the inlet 511, the solidified fluid is more easily pushed out from the outlet 512 by the valve core 52, and smooth conveying of the fluid is ensured.

Preferably, the spool body 521 is a hemisphere. Of course, the valve body 521 may have other shapes such as a quarter sphere, a three-quarter sphere, and the like.

A ring magnet 53 is installed in the valve chamber 50, the ring magnet 53 being disposed coaxially with the valve body 51, at least a portion of the spool 52 being made of a ferromagnetic material so that the spool 52 moves from the second position to the first position by a magnetic force between the spool 52 and the ring magnet 53.

In some embodiments, the check valve 5 further includes a magnet mounting plate 59, the ring magnet 53 being mounted on the magnet mounting plate 59, the magnet mounting plate 59 being mounted within the valve chamber 50 to mount the ring magnet 53 within the valve chamber 50. Thereby, the ring magnet 53 is conveniently mounted in the valve chamber 50 by the magnet mounting plate 59.

In other embodiments, the ring magnet 53 may be directly mounted inside the valve chamber 50 without the magnet mounting plate 59.

In some embodiments, the magnet mounting plate 59 is made of ferromagnetic material so that the ring magnet 53 is mounted on the magnet mounting plate 59 by the magnetic force between it and the magnet mounting plate 59. Thus, the check valve 5 has a simple structure and facilitates the manufacturing of the check valve 5, as compared with the case where the ring magnet 53 is fixed to the magnet mounting plate 59 by fastening or welding.

Preferably, the valve body 51 is made of a non-ferromagnetic material.

In some embodiments, as shown in fig. 8, the ring magnet 53 forms a valve seat 54. At this time, when the spool 52 is in the first position, the spool 52 is stopped against the ring magnet 53.

In other embodiments, the magnet mounting plate 59 is an annular plate, the magnet mounting plate 59 being coaxial with the valve body 51, the magnet mounting plate 59 forming the valve seat 54. At this time, when the spool 52 is in the first position, the spool 52 is stopped against the magnet mounting plate 59.

Thus, the ring magnet 53 or the magnet mounting plate 59 forms the valve seat 54, which is advantageous in simplifying the structure of the check valve 5 and in manufacturing the check valve 5.

Of course, in other embodiments, the valve seat 54 may be provided in addition, and the valve seat 54 may be fixed to the valve body 51, the magnet mounting plate 59, or the ring magnet 53. At this time, each of the ring magnet 53 and the magnet mounting plate 59 may be composed of several parts, and a fluid passage for passing fluid is defined between the parts, and is in communication with the valve chamber 50.

In some embodiments, one of the magnet mounting plate 59 and the valve body 51 is provided with a positioning boss, and the other of the magnet mounting plate 59 and the valve body 51 is provided with a positioning groove, and the positioning boss is in insert fit with the positioning groove.

For example, as shown in fig. 8, an inner flange is provided inside the valve body 51, a positioning groove is provided on the inner flange, a positioning boss is provided on the magnet mounting plate 59, and the positioning boss and the positioning groove are inserted and fitted to position the magnet mounting plate 59 on the valve body 51. Thereby, the magnet mounting plate 59 is conveniently mounted at a set position in the valve body 51.

Preferably, the positioning boss is an interference fit with the positioning groove, and the magnet mounting plate 59 is mounted on the valve body 51. Thus, the check valve 5 has a simple structure and is easy to manufacture, compared with the case where the magnet mounting plate 59 is connected to the valve body 51 by welding or fastening.

In some embodiments, the check valve 5 further includes a limiting block, where the limiting block is connected to the valve core 52, a first limiting portion 57 is provided on the limiting block, a second limiting portion 58 is provided in the valve cavity 50, and when the valve core 52 is located at the second position, the first limiting portion 57 can abut against the second limiting portion 58. The first stopper 57 is located between the spool 52 and the inlet 511 in the axial direction of the valve body 51, and the second stopper 58 is located between the spool 52 and the first stopper 57 in the axial direction of the valve body 51.

The fact that the first limiting portion 57 can abut against the second limiting portion 58 when the spool 52 is located at the second position means that: when the valve body 52 is away from the valve seat 54 and is in the second position, the first stopper 57 may be in contact with the second stopper 58, and the first stopper 57 may not be in contact with the second stopper 58. Specifically, when the spool 52 just leaves the valve seat 54 and the gap between the spool 52 and the valve seat 54 is small, the spool 52 is located at the second position, but at this time the first stopper 57 is not in contact with the second stopper 58. When the valve body 52 is away from the valve seat 54 and the gap between the valve body 52 and the valve seat 54 is large, the valve body 52 is located at the second position, and at this time, the first stopper 57 is in contact with (stopped against) the second stopper 58, preventing the valve body 52 from continuing to move in a direction away from the valve seat 54.

Thus, when the spool 52 is in the second position, the limit position of the spool 52 can be limited by the abutment of the first limit position portion 57 and the second limit position portion 58 so that the spool 52 moves from the second position to the first position when the fluid delivery is completed.

In other embodiments, the first limiting portion 57 and the second limiting portion 58 may not be provided, and the limiting position of the valve element 52 may be limited by the magnetic force between the ring magnet 53 and the valve element 52.

Preferably, the first limiting portion 57 is a plurality of stoppers, and each stopper is uniformly distributed around the axis of the valve body 51 at intervals. Thus, the integral structure formed by the valve core 52 and the first limiting block is symmetrical, so that when the valve core 52 moves along the axial direction of the valve body 51, the valve core 52 is prevented from deflecting in the radial direction of the valve body 51, and the stable flow of fluid in the valve body 51 is prevented from being influenced.

Specifically, spool 52 also includes a cylindrical connecting section 522. The stopper includes a first portion and a second portion, the first portion is in a block shape, the stopper is in the second portion, one end of the columnar connecting section 522 is connected to the valve core main body 521, the other end is connected to the first portion, and the stopper is disposed on an edge of the first portion.

Preferably, the second limiting portion 58 is a limiting ring. Thereby, the abutment of the second limiting portion 58 and the first limiting portion 57 is conveniently realized.

Of course, in other embodiments, the second limiting portion 58 may also be a stopper.

Preferably, the columnar connecting section 522 and the limiting block are provided with blind holes, the orifices of the blind holes face the inlet 511, the bottoms of the blind holes are conical, and the tops of the conical holes face the outlet 512.

The operation of the above-described check valve 5 will be described below by taking fig. 7 to 9 as an example:

before the check valve 5 operates, the spool 52 is held in the first position by the magnetic force between the ring magnet 53 and the spool 52. When fluid enters the valve cavity 50 from the inlet 511 positively, a part of the fluid applies fluid pressure towards the first end 55 to the limiting block, another part of the fluid enters the valve cavity 50 to apply fluid pressure towards the first end 55 to the valve core main body 521, the direction of the fluid pressure received by the valve core 52 is opposite to that of the magnetic force, the fluid pressure is larger than the magnetic force, the valve core 52 moves towards the first end 55, the valve core 52 is separated from the valve seat 54, the valve core 52 is located at the second position, and the valve cavity 50 is communicated with the inlet 511 and the outlet 512 to form a fluid passage. When fluid flows in the reverse direction from the outlet 512 into the valve chamber 50, the fluid applies fluid pressure to the spool 52 toward the second end 56, and the direction of the fluid pressure to which the spool 52 is subjected is the same as the direction of the magnetic force. The valve element 52 moves toward the second end 56 under the combined action of fluid pressure and magnetic force, and eventually the valve element 52 and valve seat 54 stop forming a linear seal preventing backflow of fluid when the valve is in the first position. The fluid pressure herein refers to the pressure at which fluid is applied to the spool 52.

The following describes in detail the procedure of performing an anchor supporting operation by the anchor supporting construction device 1000 according to the embodiment of the present invention with reference to fig. 1 to 9:

1) Drilling: the anchor bolt supporting operation cycle starts, the driver 2 rotates forward to drive the first transmission piece 31 to rotate forward, and the second transmission piece 32 rotates reversely under the drive of the first transmission piece 31 because the first transmission piece 31 is connected with the second transmission piece 32. Since the second transmission member 32 is connected to the rotation shaft, the rotation shaft is reversed (rotated in the first direction). Because the pre-tightening nut 92 is connected with the rotating shaft, under the combined action of the rotating shaft and the limiting block 91, the rod body 95 and the rotating shaft rotate together, and drill holes are drilled by using the drill 96 of the anchor rod 9. In this process, the second shaft 20 does not rotate together with the first shaft 10, and since the inner and outer sides of the second seal member 42 contact the first shaft 10 and the second shaft 20, respectively, the second shaft 20 receives torque generated by friction, and the second shaft 20 does not rotate under the effect of the rotation stopper 6. During the drilling process, only one second through hole 203 of the second shaft 20 transfers water into the third through hole 953 of the rod body 95 for removing the cinder. Due to the action of the first and second seals 41 and 42, it is ensured that the high-pressure water flow enters the third through hole 953 of the rod body 95 without outflow. When the limiting block 91 is clung to the pre-tightening nut 92, the pre-tightening nut 92 is clung to the aligning ball pad 93, the aligning ball pad 93 is clung to the tray 94, and the tray 94 is clung to the surrounding rock, the drilling is completed.

2) And (3) anchoring: after the drilling is completed, the driver 2 stops rotating, and the second through hole 203 in the second shaft 20 stops pumping water to the inside of the rod body 95; the other two second through holes 203 of the second shaft 20 pump the a-component and the B-component of the anchoring agent respectively, the anchoring agent of the two components is pumped into the third through holes 953 of the rod body 95 and the gap between the rod body 95 and the surrounding rock simultaneously, the a-component and the B-component of the anchoring agent can be ensured to enter the third through holes 953 of the rod body 95 without outflow due to the effect of the first sealing element 41 and the second sealing element 42, after the anchoring agent is pumped to a preset amount, the pumping is stopped, and after the components of the anchoring agent are mixed and reacted, the anchoring function is realized.

3) And (3) pre-tightening: after the anchoring is completed, the driver 2 reverses, and drives the pre-tightening nut 92 to rotate through the first transmission member 31 and the second transmission member 32, at this time, the rotation direction of the pre-tightening nut 92 is the second direction, the rotation direction of the pre-tightening nut 92 is opposite to the rotation direction of the drilling process, and the pre-tightening nut 92 continuously extrudes the tray 94 tightly attached to the surrounding rock, so as to pre-tighten the anchor rod 9. During the pre-tightening process, the anchor rod 9 translates in a direction away from the surrounding rock relative to the first shaft 10, and the limiting block 91 at the tail of the anchor rod 9 contacts with the second shaft 20 and pushes the second shaft 20 to move away from the surrounding rock, so that the reset elastic piece 7 is compressed until the pre-tightening process is completed. After the pre-tightening is finished, the anchor rod 9 is separated from the first shaft 10, the second shaft 20 moves horizontally relative to the first shaft 10 under the action of the reset elastic member 7, the initial position is gradually restored, the reset elastic member 7 also restores the original installation length, and the pre-tightening force and the installation length of the reset elastic member 7 can be adjusted through the baffle ring 8.

After the above process steps are completed, the next working cycle is performed according to the construction requirement, and in each working cycle, the working principle of the anchor bolt support construction device 1000 in the embodiment of the invention is consistent, and will not be described again.

The anchor bolt support construction device 1000 provided by the embodiment of the invention can complete multiple steps of drilling, anchoring and pre-tightening, reduces the labor intensity of workers, improves the roadway support efficiency, has low cost and simple structure, is convenient to install and maintain, and is suitable for coal roadway anchor bolt support operation.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. An anchor bolt support construction apparatus, comprising:

A base;

the rod body is spaced from the second shaft in the axial direction of the rod body, the rod body is arranged adjacent to the first end of the first shaft relative to the second shaft in the axial direction of the rod body, the limiting block is arranged between the pre-tightening nut and the second shaft in the axial direction of the rod body, the outer circumferential surface of the rod body is provided with external threads, the pre-tightening nut is in threaded fit on the rod body and is in sealing connection with the first shaft, the limiting block is movably arranged in the first through hole in the axial direction of the first shaft and is connected with the rod body, each of the pre-tightening nut and the limiting block is provided with a first surface and a second surface which are opposite in the axial direction of the rod body, when the first shaft drives the pre-tightening nut to rotate in a first direction, the first surface of the limiting block is abutted against the second surface of the pre-tightening nut so that the pre-tightening nut drives the rod body to rotate in the first direction, and when the first shaft drives the pre-tightening nut to rotate in a second direction opposite to the first direction, the first shaft can push the first end of the pre-tightening nut against the first shaft;

A return spring mounted between the base and the second shaft such that the return spring provides a return spring force to the second shaft toward the first end of the first shaft;

the second shaft comprises a first part and a second part, the first part is inserted in the first through hole in a sealing way, the second part extends out of the first through hole, a rotation stopping block is arranged on one of the outer peripheral surface of the second part and the base, a rotation stopping groove is arranged on the other one of the outer peripheral surface of the second part and the base, the rotation stopping block is inserted in the rotation stopping groove, and the reset elastic piece is arranged on the second part.

2. The anchor bolt support construction apparatus of claim 1 wherein the anti-rotation block is a key and the anti-rotation slot is a keyway that mates with the key.

3. The anchor bolt support construction device according to claim 2, further comprising a retainer ring connected to the base, the retainer ring being spaced apart from the rotation stop block in an axial direction of the second shaft, the retainer ring being fitted over the second portion, the return elastic member being a compression spring, the rotation stop block being provided on an outer peripheral surface of the second portion, the compression spring being press-fitted between the rotation stop block and the retainer ring.

4. A bolting construction device according to claim 3, wherein said stop ring is position-adjustable in the axial direction of said second shaft for adjusting the pretension of said compression spring.

5. The anchor bolt support construction device according to claim 4, further comprising an adjusting cylinder sleeved on the second portion, the adjusting cylinder being connected to the base, an external thread being provided on an outer peripheral surface of the adjusting cylinder, and the retainer ring being an adjusting nut engaged with the adjusting cylinder.

6. The anchor bolt support construction apparatus of any one of claims 1-5, further comprising a magnet mounting plate on which the ring magnet is mounted, the magnet mounting plate being mounted within the valve cavity to mount the ring magnet within the valve cavity.

7. The anchor bolt support construction apparatus of claim 6 wherein the magnet mounting plate is made of a ferromagnetic material such that the ring magnet is mounted on the magnet mounting plate by magnetic force between the ring magnet and the magnet mounting plate.

8. The anchor bolt support construction device according to any one of claims 1 to 5, further comprising a stopper, wherein the stopper is connected to the valve core, a first stopper portion is provided on the stopper, a second stopper portion is provided in the valve chamber, the first stopper portion can be stopped against the second stopper portion when the valve core is in the second position, the first stopper portion is located between the valve core and the inlet in an axial direction of the valve body, and the second stopper portion is located between the valve core and the first stopper portion in the axial direction of the valve body.