CN217400870U - Grouting device - Google Patents
Grouting device Download PDFInfo
- Publication number
- CN217400870U CN217400870U CN202221547867.5U CN202221547867U CN217400870U CN 217400870 U CN217400870 U CN 217400870U CN 202221547867 U CN202221547867 U CN 202221547867U CN 217400870 U CN217400870 U CN 217400870U
- Authority
- CN
- China
- Prior art keywords
- cavity
- grouting
- seats
- seat
- right half
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a grouting device, which belongs to the technical field of coal mine drilling, and comprises a base which can be connected with a drilling device, wherein a cavity seat assembly is arranged on the base, the cavity seat assembly comprises linear hydraulic cylinders which are oppositely arranged at two ends of the base, the output end of the linear hydraulic cylinder is connected with a cavity seat, and the cavity seat moves along a slide rail arranged on the base under the action of the linear hydraulic cylinders; a cavity body is arranged between the two cavity seats and comprises a left half cavity and a right half cavity which are oppositely arranged, and the left half cavity and the right half cavity are in floating connection with the corresponding cavity seats and can form a grouting cavity with a closed circumferential surface; a grouting opening communicated with the grouting cavity is formed in the left half cavity and/or the right half cavity; and a sealing cover is arranged at the outlet end of the grouting cavity to realize the sealing connection of the grouting cavity and the gas extraction hole. The utility model discloses a slip casting machine is not only small, can be integrated with the rig, but also automatic overflow, degree of automation is high.
Description
Technical Field
The utility model belongs to the technical field of the colliery probing, a slip casting ware is related to.
Background
The existing hole sealing grouting device for mining basically adopts external pressure to press a hole sealing agent into a hole through a pipeline, and the device is large in size, large in grouting pressure and inconvenient to integrate with a drilling machine.
SUMMERY OF THE UTILITY MODEL
In view of this, the present application aims to provide a grouting device to solve the problem that the existing grouting device is large in size and inconvenient to integrate with a drilling machine.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a grouting device comprises a base capable of being connected with a drilling device, wherein a cavity seat assembly is arranged on the base and comprises linear hydraulic cylinders oppositely arranged at two ends of the base, the output end of each linear hydraulic cylinder is connected with a cavity seat, and the cavity seats move along sliding rails arranged on the base under the action of the linear hydraulic cylinders; a cavity body is arranged between the two cavity seats and comprises a left half cavity and a right half cavity which are oppositely arranged, and the left half cavity and the right half cavity are in floating connection with the corresponding cavity seats and can form a grouting cavity with a closed circumferential surface; a grouting opening communicated with the grouting cavity is formed in the left half cavity and/or the right half cavity; the outlet end of the grouting cavity is provided with a sealing cover to realize the sealing connection between the grouting cavity and the gas extraction hole, the sealing cover comprises a left half sealing cover and a right half sealing cover which are arranged oppositely, and the left half sealing cover and the right half sealing cover are connected with corresponding cavity seats and can be enclosed into a sealing cavity with a sealed circumferential surface.
Optionally, one end of each of the left half cavity and the right half cavity, which is close to the cavity seat, is provided with a connecting boss, the connecting boss is clamped in a limiting groove formed in the corresponding cavity seat, and the width of the limiting groove is greater than the thickness of the connecting boss; and overflow springs are arranged between the left half cavity and the right half cavity and the corresponding cavity seats.
Optionally, the base is provided with two slide rails arranged oppositely, the opposite sides of the two slide rails are provided with slide grooves connected with the cavity base in a sliding manner, and two ends of each slide groove are provided with limit rods.
Optionally, the linear hydraulic cylinder includes a fixing seat fixed to the base, the opposite sides of the two fixing seats are provided with a coaxial piston cylinder barrel and an oil inlet and an oil outlet communicated with the piston cylinder barrel, a piston is arranged in the piston cylinder barrel, one end of the piston extending out of the piston cylinder barrel is connected with a cavity seat, a plurality of guide rods are arranged between the two fixing seats, and the two ends of each guide rod are fixedly connected with the cavity seat and penetrate through the cavity seat and are connected with the cavity seat in a sliding manner.
Optionally, the number of the guide rods is 4, and the guide rods are symmetrically arranged in two rows on the upper side and the lower side of the piston cylinder barrel.
Optionally, the guide bar is a stepped shaft, and comprises a limiting section located at the middle part, guide sections located at two ends of the limiting section, and a connecting section located at the other ends of the two guide sections, wherein the connecting section is connected with the fixing seat, the guide sections are connected with the cavity body seat, and one end of each guide section, which is close to the connecting section, is provided with a limiting boss to limit the limit position of the cavity body seat.
Optionally, the diameters of the limiting section, the guiding section and the connecting section are sequentially decreased progressively, so that a limiting step is formed between adjacent sections.
Optionally, the front and rear sides of the two cavity seats are respectively provided with a front end plate and a rear end plate corresponding to the connection parts of the cavity body and the cavity seats.
Optionally, the sealing cavity is flared, and the inner diameter of the end far away from the grouting cavity is larger than the inner diameter of the end close to the grouting cavity.
Optionally, the grouting cavity is a stepped cavity with a large middle and small ends; the connecting surface of the left half cavity and the right half cavity is provided with a step structure to form plug connection, and the step structure close to the top of the grouting cavity is provided with a groove structure to form an overflow channel.
Optionally, a grouting joint is arranged at the grouting opening, and a hydraulic joint is arranged at the oil inlet and the oil outlet.
The beneficial effects of the utility model reside in that: the grouting device is small in size and can be integrated with a drilling machine, so that the space under a coal mine is saved; the grouting is carried out by utilizing the rotary power of the drilling device, and the grouting device can automatically overflow and has high automation degree.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a longitudinal section of a grouting device;
FIG. 2 is a cross-sectional view C-C of FIG. 1;
FIG. 3 is a perspective view of the grouting device;
FIG. 4 is a schematic structural view of a base;
FIG. 5 is a longitudinal cross-sectional view of the chamber body seat assembly;
FIG. 6 is a perspective view of the chamber body seat assembly;
FIG. 7 is a schematic structural diagram of a cavity mount;
FIG. 8 is a schematic view of the structure of the guide bar;
FIG. 9 is a first schematic structural view of the right half cavity;
FIG. 10 is a second schematic structural view of the right half cavity;
fig. 11 is a schematic view of the working state of the grouting device.
Reference numerals: the device comprises a base 1, a cavity seat assembly 2, an overflow spring 3, a cavity body 4, a grouting joint 5, a sealing cover 6, a sliding rail 11, a sliding chute 12, a limiting rod 13, a mounting hole 14, a bottom plate 15, a piston seat 21, a hydraulic joint 22, a piston 23, a cavity seat 24, an end plate 25, a guide rod 26, an overflow spring mounting hole 41, a slit ring 42, a slurry containing cavity 43, an overflow channel 44, a grouting port 45, a connecting boss 46, a sliding block structure 241, a guide hole 242, a limiting groove 243, a screw countersunk hole 244, a threaded hole 245, a limiting thread 261, a limiting step 262 and a sliding rod 263.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-11, a grouting device comprises a base 1 capable of being connected with a drilling device, wherein a cavity seat assembly 2 is arranged on the base 1, the cavity seat assembly 2 comprises linear hydraulic cylinders oppositely arranged at two ends of the base, each linear hydraulic cylinder comprises a fixed seat fixed relative to the base, coaxial piston cylinder barrels and oil inlet and outlet ports communicated with the piston cylinder barrels are arranged at opposite sides of the two fixed seats, hydraulic connectors 22 are arranged at the oil inlet and outlet ports, pistons 23 are arranged in the piston cylinder barrels, one ends of the pistons 23 extending out of the piston cylinder barrels are connected with cavity seats 24, and the cavity seats 24 move along sliding rails arranged on the base 1 under the action of the pistons 23; a cavity body 4 is arranged between the two cavity seats 24, the cavity body 4 comprises a left half cavity and a right half cavity which are oppositely arranged, and the left half cavity and the right half cavity are in floating connection with the corresponding cavity seats 24 and can form a grouting cavity with a closed circumferential surface; a grouting opening communicated with the grouting cavity is formed in the left half cavity and/or the right half cavity, and a grouting joint 5 is arranged at the grouting opening; the sealing cover 6 is arranged at the outlet end of the grouting cavity to realize the sealing connection of the grouting cavity and the gas extraction hole, the sealing cover 6 comprises a left half sealing cover and a right half sealing cover which are oppositely arranged, and the left half sealing cover and the right half sealing cover are connected with the corresponding cavity body seats and can enclose a sealing cavity with a closed circumferential surface; the front and rear sides of the two cavity seats 24 are respectively provided with a front end plate and a rear end plate corresponding to the connecting part of the cavity body 4 and the cavity seats 24.
The floating arrangement mode of the cavity body 4 can be as follows: connecting bosses are arranged at one ends of the left half cavity and the right half cavity close to the cavity seat 24, the connecting bosses are clamped in limiting grooves 243 formed in the corresponding cavity seat 24, and the width of each limiting groove 243 is larger than the thickness of each connecting boss; and an overflow spring 3 is arranged between the left half cavity and the right half cavity and the corresponding cavity seat 24 so as to detect the pressure of the grouting cavity and the formation of an overflow channel.
In order to avoid the cavity seat subassembly 2 to break away from base 1, the utility model discloses be equipped with two slide rails 11 that are mutual disposition on base 1 to be equipped with at the opposite side of two slide rails 11 with 24 sliding connection's of cavity seat spout 12, the both ends of spout 12 are equipped with gag lever post 13.
In order to improve the atress of device, realize the reliable butt joint of half cavity on the left side and half cavity on the right side, the utility model discloses be equipped with both ends and its fixed connection's many guide bars 26 between two fixing bases, guide bar 26 runs through cavity seat 24 and rather than sliding connection. Preferably, the number of the guide rods 26 is 4, and two rows of the guide rods are symmetrically arranged on the upper side and the lower side of the piston cylinder barrel.
The guide rod 26 of the utility model is a stepped shaft, which comprises a limit section positioned in the middle part, guide sections positioned at two ends of the limit section and a connecting section positioned at the other end of the two guide sections; the connecting section is connected with the fixed seat and comprises a light shaft section in sliding fit with the fixed seat and a threaded section for mounting a nut, and the threaded section is provided with a limiting thread 261; the guide section is connected with the cavity seat 24, and one end of the guide section, which is close to the connecting section, is provided with a limiting boss so as to limit the limit position of the cavity seat 24. Preferably, the diameters of the limiting section, the guiding section and the connecting section are sequentially decreased progressively, so that a limiting step 262 is formed between the adjacent sections.
The utility model discloses a sealed cowling 6 keeps away from the internal diameter of slip casting chamber one end and is not less than the internal diameter that is close to slip casting chamber one end, can be tubaeform, cylinder or toper, preferred tubaeform.
Examples
A grouting device is mainly composed of the following parts as shown in figures 1-11: base 1, cavity seat subassembly 2, overflow spring 3, cavity body 4, slip casting connect 5, sealed cowling 6. The specific structure and relative positional relationship of the respective portions are as follows.
Base 1: the supporting grouting device is connected with the drilling device, so that the floating connection of the grouting device is facilitated.
Slide rail 11: the housing block assembly 2 is slidable along the slide rail 11.
The chute 12: the cavity seat assembly 22 is placed in the sliding groove 12 to avoid being separated from the base 1.
The limiting rod 13: the left and right positions of the cavity seat component 2 are limited.
Mounting hole 14: and connecting the grouting device with the drilling device.
Bottom plate 15: and supporting the grouting device.
Cavity mount assembly 22: is arranged on the base 1 and can slide on the base 1; under the action of the pistons 23 at the two ends, the cavity seat 24 can move left and right to form a grouting cavity; after the cavity seat assembly 2 is completely opened, the cavity seat assembly can also slide on the base 1, and the position precision requirement of the grouting cavity and the hole packer is met.
The method mainly comprises the following steps: piston seats 21 (one in bilateral symmetry), hydraulic joints 22 (one in bilateral symmetry), pistons 23 (one in bilateral symmetry), cavity seats 24 (one in bilateral symmetry), end plates 25 and guide rods 26.
The piston seat 21: the hydraulic oil cylinder comprises a fixed seat fixed relative to a base, a piston cylinder and an oil inlet and outlet arranged on the fixed seat, wherein a hydraulic connector 22 is arranged at the oil inlet and outlet and is connected with an external pressure oil pipeline through the hydraulic connector 22.
Hydraulic joint 22: and connecting the hydraulic oil pipeline.
The piston 23: under the action of hydraulic oil, the piston can move in the piston cylinder barrel, so that the cavity seat 24 is pushed to move left and right, and the opening and closing of the cavity body 4 are completed.
Cavity mount 24: is connected with the piston 23 and mainly functions to support the cavity body 4, and the cavity body 4 can move left and right in space; the sliding guide rail is connected with the left half cavity or the right half cavity in a sliding manner through a convex mounting groove, is fixedly connected with the cavity seat 24 through a screw arranged in a screw countersunk hole 244, is connected with the end plate 25 through a threaded hole 245, is connected with the guide rod 26 in a sliding manner through a guide hole 242, and is connected with the inner side of the sliding rail 11 in a sliding manner through sliding block structures 241 positioned on two sides of the bottom of the sliding guide rail;
end plate 25: the connecting parts of the cavity body 4 and the cavity seats 24 are arranged at the front side and the rear side of the two cavity seats 24, so that the cavity body 4 can be prevented from sliding out from the front side and the rear side, and the cavity body 4 has the functions of matching sealing and dust prevention.
The guide bar 26: connecting the left and right cavity blocks 24 and the piston block 21, the minimum and maximum positions of the cavity blocks 24 are restricted.
And (3) an overflow spring: is arranged between the cavity body 4 and the cavity seat 24 to realize the floating of the cavity body 4. After the grouting cavity is filled with the sealant, the sealant pressure is increased, the overflow spring 3 is compressed, and the left half cavity or the right half cavity is opened in a small range, so that the sealant overflow channel is formed.
The cavity body 4: the grouting cavity is a stepped cavity with a large middle part and two small ends, the abutting surfaces of the left half cavity and the right half cavity are provided with stepped structures to form plug connection, the stepped structure close to the top of the grouting cavity is provided with a groove structure to form an overflow channel, the stepped structure is arranged on the cavity seat 24, and the grouting cavity and the hole sealing agent overflow channel are formed under the action of the overflow spring 3 and the cavity seat 24.
Half cavity on left side, half cavity on right side: having an overflow spring mounting hole 41, a slit ring 42, a slurry-receiving chamber 43, an overflow 44, a slurry injection port 45, and a connecting boss 46.
Return spring mounting hole 41: an overflow spring is installed, when the grouting pressure exceeds a specified value or a grouting cavity is filled, redundant hole sealing agent can conveniently flow out of the grouting device, and grouting safety and full grouting are ensured;
slit ring 42: a grouting gap is formed between the sealing agent and the hole sealing pipe, so that the sealing agent can flow conveniently;
pulp accommodating chamber 43: the volume of the hole sealing agent is formed, so that the transmission of grouting pressure is facilitated;
the overflow 44: when the grouting holes are filled with the hole sealing agent, the surplus hole sealing agent flows out of the overflow channel;
grouting port 45: the screw hole is provided with a grouting joint for connecting a grouting pipeline;
connection boss 46: connected with the limit groove 243 of the cavity block 24.
The sealing cover 6: the gas extraction device comprises a left half sealing cover and a right half sealing cover which are oppositely arranged, the left half sealing cover and the right half sealing cover are arranged on a cavity seat 24, the end parts of the left half sealing cover and the right half sealing cover are directly contacted with a gas extraction orifice, and a grouting cavity is sealed.
The center of the grouting device is superposed with the center of the drilling device, a split structure is adopted, the opening and the closing of the cavity body 4 are realized, a closed grouting cavity is formed with the hole packer during the closing, and a space is provided for the connection and the assembly of the hole packer during the opening; a floating mechanism is arranged so as to be concentric with the hole packer; the adjustable grouting pressure of overflow spring 3, after grouting pressure surpassed hole sealing pressure, cavity body 4 is opened in a small number in order to form the excessive thick liquid passageway, satisfies grouting pressure's demand, also can avoid damaging the hole packer because of too big pressure simultaneously.
The working principle of the utility model is as follows:
referring to fig. 11, fig. 11 is a schematic view of the working state of the grouting device, wherein a is the grouting device and B is the hole packer.
An initial state: the grouting device is arranged on the drilling device, the center of the grouting device, the center of the drilling device and the center of the hole packer are overlapped and connected with the drilling device, and after the grouting device is connected, the left cavity seat 24 and the right cavity seat 24 are in an open position.
Grouting operation:
(1) the grouting device moves axially along the spiral hole packer under the action of external force, so that the sealing cover 6 is in contact with the gas extraction hole opening, and the hole sealing channel is sealed;
(2) the cavity body 4 moves towards the hole packer under the action of the piston 23, and completes grouting channel formation together with the hole packer;
(3) conveying the hole sealing agent to the cavity joint;
(4) rotating the hole sealing device, and conveying the hole sealing agent into the drilled hole along the spiral screwing direction to complete the injection of the hole sealing agent;
(5) after the sealing agent is injected, the pressure of the sealing agent is gradually increased, and when the acting force of the pressure of the sealing agent on the cavity body 4 is larger than the compression force of the spring, the cavity body 4 moves outwards along the axial direction of the guide rod 26 to form an overflow channel;
(6) the redundant hole sealing agent overflows the cavity body 4, and the spiral hole sealing device is completely conveyed into the hole to complete hole sealing agent injection;
(7) and (4) moving the grouting device backwards to separate from the coal wall to finish grouting operation.
The grouting device of the utility model has small volume, can be integrated with a drilling machine, and saves the space under the coal mine; grouting is carried out by utilizing the self-power (rotary power) of the drilling device, and the grouting device can automatically overflow, realizes mechanical and automatic grouting and hole sealing, has high automation degree, and solves the problems of large volume, independent construction with a drilling machine and low overall efficiency of the existing grouting device.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. A slip casting device is characterized in that: the drilling device comprises a base which can be connected with a drilling device, wherein a cavity seat assembly is arranged on the base and comprises linear hydraulic cylinders which are oppositely arranged at two ends of the base, the output end of each linear hydraulic cylinder is connected with a cavity seat, and the cavity seats move along slide rails arranged on the base under the action of the linear hydraulic cylinders; a cavity body is arranged between the two cavity seats and comprises a left half cavity and a right half cavity which are oppositely arranged, and the left half cavity and the right half cavity are in floating connection with the corresponding cavity seats and can form a grouting cavity with a closed circumferential surface; a grouting opening communicated with the grouting cavity is formed in the left half cavity and/or the right half cavity; the outlet end of the grouting cavity is provided with a sealing cover to realize the sealing connection between the grouting cavity and the gas extraction hole, the sealing cover comprises a left half sealing cover and a right half sealing cover which are arranged oppositely, and the left half sealing cover and the right half sealing cover are connected with corresponding cavity seats and can be enclosed into a sealing cavity with a sealed circumferential surface.
2. A slurry injector as claimed in claim 1, wherein: one end of each of the left half cavity and the right half cavity, which is close to the cavity seat, is provided with a connecting boss, the connecting bosses are clamped in limiting grooves formed in the corresponding cavity seat, and the width of each limiting groove is larger than the thickness of each connecting boss; and overflow springs are arranged between the left half cavity and the right half cavity and the corresponding cavity seats.
3. A slurry injector as claimed in claim 1, wherein: the base is provided with two slide rails which are oppositely arranged, the opposite sides of the two slide rails are provided with slide grooves which are in sliding connection with the cavity seat, and two ends of each slide groove are provided with limiting rods.
4. A slurry injector as claimed in claim 1, wherein: the linear hydraulic cylinder comprises fixing seats fixed relative to the base, coaxial piston cylinder barrels and oil inlet and outlet ports communicated with the piston cylinder barrels are arranged on the opposite sides of the two fixing seats, pistons are arranged in the piston cylinder barrels, one ends of the pistons extending out of the piston cylinder barrels are connected with cavity seats, a plurality of guide rods fixedly connected with the two ends of the pistons are arranged between the two fixing seats, and the guide rods penetrate through the cavity seats and are connected with the cavity seats in a sliding mode.
5. A grouting device according to claim 4, characterised in that: the guide rods are 4 and are symmetrically arranged in two rows on the upper side and the lower side of the piston cylinder barrel.
6. A grouting device according to claim 4, characterised in that: the guide rod is a stepped shaft and comprises a limiting section located at the middle part, guide sections located at two ends of the limiting section and a connecting section located at the other end of the two guide sections, the connecting section is connected with the fixing seat, the guide sections are connected with the cavity seat, and a limiting boss is arranged at one end, close to the connecting section, of each guide section to limit the limit position of the cavity seat.
7. The grouting device according to claim 6, characterized in that: the diameters of the limiting section, the guide section and the connecting section are sequentially decreased progressively so as to form a limiting step between adjacent sections.
8. A slurry injector as claimed in claim 1, wherein: the front side and the rear side of the two cavity seats are respectively provided with a front end plate and a rear end plate corresponding to the connecting parts of the cavity body and the cavity seats.
9. A slurry injector as claimed in claim 1, wherein: the sealed chamber is tubaeform, and keeps away from the internal diameter of slip casting chamber one end and is greater than the internal diameter that is close to slip casting chamber one end.
10. A slurry injector as claimed in claim 1, wherein: the grouting cavity is a step cavity with a large middle part and two small ends; the connecting surface of the left half cavity and the right half cavity is provided with a step structure to form plug connection, and the step structure close to the top of the grouting cavity is provided with a groove structure to form an overflow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221547867.5U CN217400870U (en) | 2022-06-20 | 2022-06-20 | Grouting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221547867.5U CN217400870U (en) | 2022-06-20 | 2022-06-20 | Grouting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217400870U true CN217400870U (en) | 2022-09-09 |
Family
ID=83148546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221547867.5U Active CN217400870U (en) | 2022-06-20 | 2022-06-20 | Grouting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217400870U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893149A (en) * | 2022-06-20 | 2022-08-12 | 中煤科工集团重庆研究院有限公司 | Airborne slip casting machine |
-
2022
- 2022-06-20 CN CN202221547867.5U patent/CN217400870U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893149A (en) * | 2022-06-20 | 2022-08-12 | 中煤科工集团重庆研究院有限公司 | Airborne slip casting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217400870U (en) | Grouting device | |
| CN103061709B (en) | Sliding sleeve control tool and the hydraulic control sliding sleeve of operation can be surmounted | |
| CN2851633Y (en) | Reciprocating plunger-pump | |
| CN203879418U (en) | Hydraulic driven flashboard slip clamp with variable diameter | |
| CN113153249A (en) | Eccentric water distributor | |
| CN107917297B (en) | Low-leakage-rate and long-service-life bidirectional under-pressure plug quick disconnect device | |
| CN203626701U (en) | Liquid-operated diameter-changing oil pipe clamping blowout preventer | |
| CN211693042U (en) | Bucket rod oil cylinder | |
| CN109236796A (en) | A kind of bitubular double rod machinery synchronous hydraulic cylinder | |
| CN114893149A (en) | Airborne slip casting machine | |
| CN214091777U (en) | Hydraulic setting tool and setting perforation combined operation system | |
| CN108167259A (en) | Actuation module and downhole tool hydraulic module | |
| CN208950526U (en) | Without the big channel thermal packer of anchoring | |
| CN211666964U (en) | Rodless oil cylinder for underground chain tightening of coal mine | |
| CN106051246A (en) | Operating method of piston type two-way pressure relief valve | |
| CN206874249U (en) | Fluid power expansion type well packer capable of flushing well | |
| CN207906184U (en) | Actuation module and downhole tool hydraulic module | |
| CN203189009U (en) | Microballoon density borehole diameter combination sidewall contact device based on hydraulic principle and logger | |
| CN207906185U (en) | Vertical drilling hydraulic device | |
| CN202325496U (en) | Horizontal sidewall contact device | |
| CN218993057U (en) | One-way valve, oil cylinder system and engineering machinery | |
| CN220540008U (en) | Manual release structure of electric hydraulic push rod | |
| CN215806478U (en) | Hydraulic control reversing valve with automatic adjusting function | |
| CN108167260B (en) | Vertical drilling hydraulic device | |
| CN217080973U (en) | Bidirectional hydraulic driving mechanism suitable for underground environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |