CN217237442U - In-hole plane reducing support device - Google Patents
In-hole plane reducing support device Download PDFInfo
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- CN217237442U CN217237442U CN202122779070.XU CN202122779070U CN217237442U CN 217237442 U CN217237442 U CN 217237442U CN 202122779070 U CN202122779070 U CN 202122779070U CN 217237442 U CN217237442 U CN 217237442U
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Abstract
The utility model provides an in-hole plane reducing strutting arrangement, including plane reducing system, reducing actuating system, connection expansion board, spliced pole, plane reducing system includes big plane backup pad, facet backup pad, connects pivot, middle disc, facet backup pad connecting rod, big plane backup pad slider, facet backup pad slider, pivot jump ring, reducing actuating system includes that big plane backup pad drives actuating cylinder, cylinder connecting rod, cylinder support, cylinder pillar, facet backup pad cylinder link, facet backup pad and drives actuating cylinder, solves the technical problem that can not provide the complete plane of an outside reducing and device recovery difficulty among the prior art. Especially, the diameter change is realized in a narrow space in a hole, a complete supporting plane can be quickly formed, clean compressed air is used as a power source, the device is simple in structure, safe and reliable, the production cost is saved, and the device can bear a larger load.
Description
Technical Field
The utility model belongs to the technical field of soil normal position mechanical testing, a downthehole annular plane reducing strutting arrangement that uses based on connecting rod slider structure is related to for realize downthehole soil normal position shearing force test.
Background
The shear test parameters of the rock-soil mass are key mechanical parameters for engineering design and civil engineering design and geological disaster treatment and prevention, and in-situ test and indoor test are two important basic means for obtaining the mechanical parameters of the rock-soil mass. The direct shear test is a common method for indoor tests, an instrument used in the direct shear test is called a direct shear apparatus, and the direct shear apparatus can be divided into a strain control type and a stress control type according to different loading modes, wherein the strain control type pushes a sample horizontally at a constant speed to generate displacement and measures corresponding shear stress; in the stress control method, horizontal shear stress is applied to a sample in stages, and corresponding displacements are measured. At present, a strain control type direct shear apparatus is commonly used. During the test, the vertical pressure is transmitted to the soil sample by a lever system through a pressurizing piston and a permeable stone, and the horizontal shear stress is applied to the soil sample by a lower box which is pushed by a wheel shaft to move. The shear strength of the soil body can be measured by a force measuring ring, and the shear deformation is measured by a dial indicator. After each level of normal stress is applied, the shear stress on the shear surface is increased at a constant speed until the test piece is sheared and damaged. The disadvantages of the indoor shear test are that the shear plane is defined as the plane between the upper and lower boxes, rather than being broken by shearing along the weakest plane of the soil sample; secondly, the shearing stress on the shearing surface is not uniformly distributed; thirdly, in the shearing process, the shearing surface of the soil sample is gradually reduced, and the shearing strength is calculated according to the original sectional area of the soil sample; and fourthly, the drainage condition can not be strictly controlled during the test, the pore water pressure can not be measured, compared with an indoor test, the in-situ test has the advantages of strong representativeness, small disturbance to the soil, capability of basically keeping the natural structure, natural water content and natural stress state of the soil, capability of truly reflecting the actual conditions of the engineering and the like, and capability of greatly meeting the requirements of engineering design and disaster management. At present, in-situ shear testing means mainly comprise an on-site large-scale direct shear test and an in-hole shear test, but some defects exist in the testing process, and devices for in-situ shear testing in rock and soil mass holes still need to be perfected so as to reflect the real rock and soil mass shearing process and obtain real shear mechanical parameters.
The on-site large direct shear test can only be used for measuring the shear strength parameter of the in-situ soil body on the shallow surface layer, and the real situation of the deep rock-soil body is difficult to reflect; in the existing in-hole shearing test, the soil body is directly pressurized and sheared by the pressurizing plate, and the shearing force actually reflected by the mode is the shearing strength of the pressurizing plate and the soil body, but not the shearing strength of the soil body in the true sense. The technical difficulty of the in-hole shearing test instrument is that a support plate device is added on the upper part and the lower part of a soil ring corresponding to an in-hole pressurizing plate. The support plate device can realize diameter change in the hole, and a complete plane circular ring can be formed after diameter change.
The Chinese patent with the granted publication number of CN103728188A and the granted publication date of 2014.04.16 discloses a soil in-situ shearing and static load tester, provides in-situ shearing test equipment, but the device adopts a swinging block-shaped disc supported by a supporting rod to shear the soil body, the mechanical control method cannot ensure the swinging block to be opened uniformly, further, local shearing may exist on the surrounding soil body, reliable experimental data cannot be obtained, the swinging blocks can interfere with each other when being pushed out, the push-out operation is complicated and inconvenient, and the device can only be suitable for soil mechanics tests in shallow holes due to the complicated delay mechanism of the swinging block, mechanical tests on deep-layer soil in holes cannot be completed, and when the deep-layer soil is exposed to moderately and strongly weathered disabled soil, the support rod is likely to be clamped by broken rock blocks, swing blocks cannot be normally retracted, and the support rod cannot be tightened to cause test failure.
The invention discloses an in-situ soil body hole internal shearing test device and a test method, wherein the in-situ soil body hole internal shearing test device is published in the patent with the publication number of CN104458445A and the publication number of 2015.03.25, and provides in-situ shearing test equipment.
The in-situ soil body hole shearing test device has structural design defects, namely the test device is complex and tedious in-hole unfolding action, has the risks of being incapable of recovering the device, and has the defects that the device can damage the natural structure of the in-situ soil body during the test and the like.
Disclosure of Invention
To the not enough and defect of above-mentioned prior art, the utility model aims at providing an in-hole plane reducing strutting arrangement solves among the prior art iris mechanism reducing device and can not provide the complete plane of an outside reducing and the technical problem of device recovery difficulty. Especially, the diameter change is realized in a narrow space in the hole. And simultaneously, the utility model discloses the device adopts pneumatic cylinder to drive, can realize the snap, provides bigger support counter-force, improves the reliability of device during operation.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
an annular plane diameter-changing device used in a hole and based on a connecting rod sliding block mechanism comprises a plane diameter-changing system, a diameter-changing driving system, a connecting expansion plate and a connecting column;
the plane diameter-changing system comprises a plane connecting plate, a large plane supporting plate, a small plane supporting plate, a connecting rotating shaft, a middle disc, a small plane supporting plate connecting rod, a large plane supporting plate sliding block, a small plane supporting plate sliding block and a rotating shaft clamping spring, wherein the large plane supporting plate and the small plane supporting plate sliding rod slide on a sliding rail of the middle disc, the large plane supporting plate connecting rod and the small plane supporting plate connecting rod are connected with the large plane supporting plate and the small plane supporting plate and the large plane supporting plate sliding block and the small plane supporting plate sliding block in a matched and hinged mode through the connecting rotating shaft and the rotating shaft clamping spring and can freely rotate, the plane connecting plate is connected with the middle disc through four bolts, and the plane connecting plate has the main function of being used for being connected with other equipment;
reducing actuating system drives actuating cylinder, cylinder connecting rod, cylinder support, cylinder pillar, facet backup pad cylinder link, facet backup pad and drives actuating cylinder including big plane backup pad, big plane backup pad drives actuating cylinder and uses bolted connection with big plane backup pad slider, and big plane backup pad cylinder uses bolt and cylinder leg joint to use the cylinder pillar and pass through bolted connection with connecting the expansion plate, make above-mentioned cylinder fix on cylinder support and fix on connecting the expansion plate, the facet backup pad drives actuating cylinder and uses bolt and be connected expansion plate fixed connection, and the piston of above-mentioned cylinder uses bolted connection with facet backup pad link, facet backup pad link and facet backup pad slider use the cylinder connecting rod to pass through bolted connection together, form stable connection. The large plane supporting plate drives the air cylinder to act to drive the large plane supporting plate to act, and the small plane supporting plate drives the air cylinder to act to drive the small plane supporting plate to act.
Connect the expansion board and include a porous metal connecting plate, the metal connecting plate is connected through the mode of four spliced poles and middle disc bolt for the reducing system of plane, and the metal connecting plate can be connected with other equipment through modes such as welding, bolted connection, realizes the cooperation work or the independent work with other equipment.
The utility model discloses the technical characteristic who has:
the plane reducing system realizes the unfolding and tightening actions through the actions of the reducing driving system, and can form a complete supporting plane for working in an unfolding state.
The reducing driving system is two pneumatic cylinders, hydraulic cylinders or motors, and can respectively drive the large plane supporting plate and the small plane supporting plate to act.
Compared with the prior art, the utility model, profitable technological effect is:
the standard torus reducing can be realized in the hole, the circular cutting requirement of the soil shearing mechanical property parameters is met, and the real soil shearing action is realized in the deep hole;
the device can realize the annular stress surface and the supporting surface in the deep hole, has simple and reliable structure, and can realize the quick expansion and retraction control of the plane diameter-changing mechanism;
the utility model discloses use pneumatic cylinder, pneumatic cylinder or motor to drive and can provide bigger holding power, nevertheless the utility model discloses not only limit to only using pneumatic cylinder, pneumatic cylinder or motor to drive, also can use motor cooperation lead screw to drive or linear electric motor drive, convenient and fast is changed to the drive division.
Drawings
FIG. 1 is a front view of a structure of an annular planar reducing device for use in a hole of the present invention;
FIG. 2 is a front view of a reducing system of the present invention;
FIG. 3 is an isometric view of a large planar support plate of an annular planar reducing device for use in a hole of the present invention;
FIG. 4 is an isometric view of a facet support plate of an in-hole annular planar diameter changing device of the present invention;
FIG. 5 is a front perspective view of a middle disk of an annular planar reducing device for use in a hole of the present invention;
FIG. 6 is a reverse isometric view of a middle disk of an in-hole annular planar reducing device of the present invention;
FIG. 7 is an isometric view of a large planar support plate slide block of an annular planar reducing device for use in a hole of the present invention;
FIG. 8 is an isometric view of a small planar support plate slider of an annular planar reducing device for use in a hole of the present invention;
fig. 9 is a front view of a driving system of an annular planar reducing device for use in a hole of the present invention;
FIG. 10 is an isometric view of a cylinder support with an annular planar reducing device for use in a bore of the present invention;
FIG. 11 is an isometric view of a small-plane support plate connecting frame of an annular planar diameter-changing device for use in a hole of the present invention;
fig. 12 is an isometric view of a connection expansion plate of the annular planar diameter-changing device for use in a hole of the present invention;
the meaning of the reference symbols in the figures is: 1-a plane reducing system, 2-a reducing driving system, 3-a connecting expansion plate and 4-a connecting column;
101-plane connecting plate, 102-large plane supporting plate, 103-small plane supporting plate, 104-connecting rotating shaft, 105-middle disc, 106-small plane supporting plate connecting rod, 107-large plane supporting plate connecting rod, 108-large plane supporting plate sliding block, 109-small plane supporting plate sliding block and 110-rotating shaft snap spring;
1021-big plane support plate rotating shaft hole, 1022-big plane support plate slide rail; 1031-small plane support plate rotating shaft hole, 1032-small plane support plate sliding column; 1051-a threaded hole, 1052-T-shaped sliding rails, 1053-a concave sliding rail and 1054-a threaded counter bore; 1081-big plane support plate slide block rotating shaft hole, 1082-big plane support plate slide block middle through hole; 1091-rotating shaft holes of the small plane supporting plate sliding blocks and 1092-through holes of the small plane supporting plate sliding blocks;
201-large plane supporting plate driving cylinder, 202-cylinder connecting rod, 203-cylinder bracket, 204-cylinder support, 205-small plane supporting plate cylinder connecting frame, 206-small plane supporting plate driving cylinder;
2011-a piston rod of a cylinder driven by a large plane supporting plate, 2012-an upper air inlet of the cylinder driven by the large plane supporting plate, and 2013-a lower air inlet of the cylinder driven by the large plane supporting plate; 2031-cylinder support inner through hole, 2032-cylinder support outer through hole; 2051-a through hole in the center of the cylinder connecting frame of the facet supporting plate, 2052-a through hole in the cylinder connecting frame of the facet supporting plate; 2061-the small plane supporting plate drives the piston rod of the cylinder, 2062-the small plane supporting plate drives the upper air inlet of the cylinder, 2063-the small plane supporting plate drives the lower air inlet of the cylinder;
301-connecting plate screw hole
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings and examples. And are not intended to limit the scope of the present invention. All equal transformations made on the basis of the technical scheme of the application fall into the protection scope of the utility model.
As shown in fig. 1 to 12, the whole structure diagram and the part structure diagram of the present invention are the same as those of the prior art, and the present embodiment shows an annular planar diameter-changing device for use in a deep hole of the device, which can realize quick diameter-changing to form a complete plane, and has the function of completing the diameter-changing in the deep hole and bearing a certain load. The device mainly comprises a plane reducing system 1, a reducing driving system 2, a connecting expansion plate 3 and a connecting column 4.
The plane reducing system 1 comprises a plane connecting plate 101, a large plane supporting plate 102, a small plane supporting plate 103, a connecting rotating shaft 104, a middle disc 105, a small plane supporting plate connecting rod 106, a large plane supporting plate connecting rod 107, a large plane supporting plate sliding block 108, a small plane supporting plate sliding block 109 and a rotating shaft clamping spring 110, wherein the plane connecting plate 101 is fixedly connected through four bolts through a threaded hole 1051, the large plane supporting plate 102 is matched with a T-shaped sliding rail 1052 on the middle disc 105 through a large plane supporting plate sliding rail 1022, the small plane supporting plate 103 is matched with a concave sliding rail 1053 on the middle disc 105 through a small plane supporting plate sliding column 1032, the four large plane supporting plates 102 are matched with the four small plane supporting plates 103 to complete plane splicing work, one end of the small plane supporting plate connecting rod 106 is connected with a small plane supporting plate rotating shaft hole 1031 on the small plane supporting plate 103 through the connecting rotating shaft 104 to realize connection around the connecting rotating shaft 104 The other end of the rotating shaft moves and is connected with a rotating shaft hole 1091 of the facet support plate sliding block 109 through a connecting rotating shaft 104 to realize the rotation around the shaft 104, the rotating shaft clamp spring 110 is arranged in a groove at one end of the connecting rotating shaft 104 to limit the axial action of the connecting rotating shaft 104, prevent the connecting rotating shaft 104 from loosening and falling off, one end of the large plane supporting plate connecting rod 107 is connected with the large plane supporting plate rotating shaft hole 1021 on the large plane supporting plate 102 through the connecting rotating shaft 104 to realize the action of rotating around the shaft 104, the other end is connected with the large plane supporting plate sliding block rotating shaft hole 1081 on the large plane supporting plate sliding block 108 through the connecting rotating shaft 104 to realize the rotation around the shaft 104, the rotating shaft clamp spring 110 is arranged in a groove at one end of the connecting rotating shaft 104 to limit the axial action of the connecting rotating shaft 104 and prevent the connecting rotating shaft 104 from loosening and falling off;
reducing actuating system 2 drives actuating cylinder 201, cylinder connecting rod 202, cylinder support 203, cylinder pillar 204, facet backup pad cylinder link 205 and facet backup pad including big plane backup pad and drives actuating cylinder 206, big plane backup pad drives actuating cylinder 201 and uses four bolts to pass through cylinder support interior through-hole 2031 and cylinder support 203 fixed connection, cylinder pillar 204 one end uses the bolt to pass through cylinder support outer through-hole 2032 and cylinder support 203 fixed connection, and four total cylinder pillars 204 and cylinder support 203 use bolted connection, uses the bolt with the other end of four cylinder pillars 204 again and is connected expansion plate 3 fixed connection, makes the stable installation of big plane backup pad driving actuating cylinder 201 on connecting expansion plate 3, facet backup pad drive actuating cylinder 206 use four bolt lug connections on connecting expansion plate 3, facet backup pad cylinder link 205 uses a bolt to lead to through facet backup pad cylinder link center The hole 2051 is fixedly connected with a threaded hole at one end of a piston rod 2061 of a driving cylinder of the facet support plate, one end of the cylinder connecting rod 202 is fixedly connected with the cylinder connecting frame 205 of the facet support plate through a through hole 2052 of the cylinder connecting frame of the facet support plate by using a bolt, and the cylinder connecting frame 205 of the facet support plate is connected with three cylinder connecting rods 202;
the connecting part of the plane reducing system 1 and the reducing driving system 2 is that the other end of the first three cylinder connecting rods 202 is connected with the small plane supporting plate sliding block 109 through a small plane supporting plate sliding block through hole 1092 by using a bolt, and the second is that the large plane supporting plate driving cylinder piston rod 2011 is fixedly connected with the large plane supporting plate sliding block 108 through a large plane supporting plate sliding block middle through hole 1082 by using a bolt;
one end of the connecting column 4 is an external thread which is matched and connected with a thread countersunk hole 1054 on a middle disc 105 in the plane diameter-changing system 1, and the other end of the connecting column 4 is fixedly connected with the connecting expansion plate 3 and the connecting column 4 together by using a bolt through the thread countersunk hole.
As a preferred scheme of the embodiment, the device adopts a simple connecting rod and sliding block principle to realize the tightening and unfolding actions of the supporting plate, and compared with a gear structure and an iris mechanism, the device is simpler and more reliable in structure, lighter in whole, sensitive in action and capable of reducing the failure rate in working.
As a preferable scheme of this example, when the large plane support plate 102 and the small plane support plate 103 in the plane diameter changing system 1 are in a tightened state, they can be completely retracted within the maximum radius of the plane connection plate 101, and they can be retracted into a small deep hole.
As a preferable scheme of the embodiment, the large plane support plate 102 and the small plane support plate 103 in the plane diameter-changing system 1 can form a complete circular plane in the unfolded state, so that the plane support work is completed, and the device can also bear a larger load.
When the device of the utility model is used,
firstly, putting a plane diameter changing device in a tightened state into a deep hole which is drilled on the ground in advance, and putting the plane diameter changing device at a preset position;
secondly, when the plane diameter changing system is in a tightening state initially, high-pressure gas is introduced into the lower air inlet 2013 of the large plane support plate driving cylinder, a piston rod 2011 of the large plane support plate driving cylinder is pushed by the high-pressure gas to extend outwards to drive the large plane support plate sliding block 108 and the large plane support plate connecting rod 107 to move, so that the large plane support plate 102 is unfolded outwards on the large plane support plate sliding rail 1022 and stops moving when reaching a preset position, the large plane support plate 102 reaches the preset unfolding position to complete unfolding, and the high-pressure gas is continuously introduced into the lower air inlet 2013 of the large plane support plate driving cylinder;
thirdly, after the large plane support plate 102 reaches the preset unfolding position, high-pressure gas is introduced into the lower gas inlet 2063 of the small plane support plate driving cylinder, so that the piston rod 2061 of the small plane support plate driving cylinder is pushed out under the action of the high-pressure gas and drives the small plane support plate sliding block 109 and the small plane support plate connecting rod 106 to act, the small plane support plate 103 extends downwards along the concave sliding rail 1053 in an inclined manner and stops moving when reaching the preset position, at the moment, the four small plane support plates 103 also reach the final position to form a complete plane circular ring with the four large plane support plates 102, at the moment, the small plane support plate driving cylinder piston rod 2061 is continuously introduced with the high-pressure gas, the formed complete plane circular ring can complete the supporting work in the circular ring with the deep hole cut, the whole device moves downwards under the external acting force to complete the in-situ shearing work, and can bear larger load action;
fourthly, after the supporting operation is finished, the four large plane supporting plates 102 and the four small plane supporting plates 103 need to be retracted to the original tightening state, at the moment, only the high-pressure gas of the lower air inlet 2013 of the large plane supporting plate driving cylinder and the high-pressure gas of the piston rod 2061 of the small plane supporting plate driving cylinder need to be simultaneously cut off, firstly, the high-pressure gas is introduced into the upper air inlet 2062 of the small plane supporting plate driving cylinder, so that the piston rod 2061 of the small plane supporting plate driving cylinder is retracted inwards under the action of the high-pressure gas and drives the sliding block 109 of the small plane supporting plate and the connecting rod 106 of the small plane supporting plate to move, so that the small plane supporting plate 103 is retracted obliquely upwards along the concave sliding rail 1053 and stops moving when reaching the preset position, and then the high-pressure gas is introduced into the upper air inlet 2012 of the large plane supporting plate driving cylinder, so that the piston rod of the large plane supporting plate driving cylinder extends outwards under the pushing of the high-pressure gas to drive the sliding block 108 of the large plane supporting plate driving cylinder to drive the small plane supporting plate to stop moving when reaching the preset position, and stop the small plane supporting plate 103 And the large plane support plate connecting rod 107, so that the large plane support plate 102 retracts inwards on the large plane support plate sliding rail 1022 and stops moving when reaching a preset position, at the moment, the large plane support plate reaches a final position, the plane diameter changing system 1 of the device reaches a minimum radius state, and next experiment can be carried out or the device can be recovered.
It should be noted that the above-mentioned embodiments are illustrative and not restrictive of the technical solutions of the present invention, and equivalents of those skilled in the art or other modifications made based on the existing technologies should be included in the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. The in-hole plane variable-diameter support device is characterized by comprising a plane variable-diameter system (1), a variable-diameter driving system (2), a connecting expansion plate (3) and a connecting column (4); the plane diameter-changing system (1) comprises a plane connecting plate (101), a large plane supporting plate (102), a small plane supporting plate (103), a connecting rotating shaft (104), a middle disc (105), a small plane supporting plate connecting rod (106), a large plane supporting plate connecting rod (107), a large plane supporting plate sliding block (108) and a small plane supporting plate sliding block (109), wherein the large plane supporting plate (102) slides on a T-shaped sliding rail (1052) of the middle disc (105), the small plane supporting plate (103) slides on a concave sliding rail (1053) of the middle disc (105), one end of the large plane supporting plate connecting rod (107) is connected with a large plane supporting plate rotating shaft hole (1021) through the connecting rotating shaft (104) in a hinged mode to realize free rotation, and the other end of the large plane supporting plate connecting rod (107) is connected with the large plane supporting plate sliding block (108) through the connecting rotating shaft (104) in a hinged mode to realize free rotation, one end of the small plane support plate connecting rod (106) is connected with the small plane support plate rotating shaft hole (1031) in a hinged mode through the connecting rotating shaft (104) to realize free rotation, the other end of the small plane support plate connecting rod (106) is connected with the small plane support plate sliding block (109) in a hinged mode through the connecting rotating shaft (104) to realize free rotation, and the plane connecting plate (101) is fixedly connected with a threaded hole (1051) of the middle disc (105) through four bolts; the reducing driving system (2) comprises a large plane supporting plate driving cylinder (201), a cylinder connecting rod (202), a cylinder support (203), a cylinder support (204), a small plane supporting plate cylinder connecting frame (205) and a small plane supporting plate driving cylinder (206), wherein the large plane supporting plate driving cylinder (201) uses four bolts and the cylinder support (203) for fixed connection, one end of the cylinder support (204) uses bolts and the cylinder support (203) for fixed connection, the total four cylinder supports (204) and the cylinder support (203) use bolts for fixed connection, the other ends of the four cylinder supports (204) use bolts and connection expansion plates (3) for fixed connection, the large plane supporting plate driving cylinder (201) is stably installed on the connection expansion plates (3), the small plane supporting plate driving cylinder (206) uses four bolts for direct connection on the connection expansion plates (3), the cylinder connecting frame (205) of the facet supporting plate is fixedly connected with a threaded hole at one end of a driving cylinder piston rod (2061) of the facet supporting plate through a central through hole (2051) of the cylinder connecting frame of the facet supporting plate by using a bolt, one end of the cylinder connecting rod (202) is fixedly connected with the cylinder connecting frame (205) of the facet supporting plate through a through hole (2052) of the cylinder connecting frame of the facet supporting plate by using a bolt, and the cylinder connecting frame (205) of the facet supporting plate is connected with three cylinder connecting rods (202) in total; the connection expansion board (3) can be connected with other equipment in modes of welding, bolt connection and the like, and the device can be matched with other equipment or can work independently.
2. The in-hole plane diameter-variable supporting device as claimed in claim 1, wherein the plane diameter-variable system (1) is formed by four large plane supporting plates (102) and four small plane supporting plates (103) which are combined to complete plane splicing work, and the number of the combined eight supporting plates is not limited.
3. The in-hole plane diameter-changing supporting device as claimed in claim 1, wherein the large plane supporting plate (102), the large plane supporting plate connecting rod (107) and the large plane supporting plate sliding block (108) in the plane diameter-changing system (1) form a connecting rod sliding block mechanism, the expansion and the tightening of the large plane supporting plate (102) are completed through the extending and retracting actions of a large plane supporting plate driving cylinder piston rod (2011) of a large plane supporting plate driving cylinder (201) of the reducing driving system (2), the small plane supporting plate (103), the small plane supporting plate connecting rod (106) and the small plane supporting plate sliding block (109) form a connecting rod sliding block mechanism, the expansion and tightening actions of the facet supporting plate (103) are completed through the extension and retraction actions of the facet supporting plate driving cylinder (206) of the reducing driving system (2) and the facet supporting plate driving cylinder piston rod (2061).
4. The in-hole plane diameter-changing supporting device as claimed in claim 1, wherein the diameter-changing driving system (2) comprises a large plane supporting plate driving cylinder (201) and a small plane supporting plate driving cylinder (206), the large plane supporting plate driving cylinder (201) and the small plane supporting plate driving cylinder (206) sequentially act to realize the expansion and retraction of the large plane supporting plate (102) and the small plane supporting plate (103), and the operation of the two cylinders is not interfered with each other.
5. The in-hole plane variable diameter support device as claimed in claim 1, wherein the variable diameter driving system (2) is not limited to a pneumatic cylinder or a hydraulic cylinder as a driving device, but may be a device having a linear motion or a device converting a rotary motion into a linear motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122779070.XU CN217237442U (en) | 2021-11-12 | 2021-11-12 | In-hole plane reducing support device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122779070.XU CN217237442U (en) | 2021-11-12 | 2021-11-12 | In-hole plane reducing support device |
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| CN217237442U true CN217237442U (en) | 2022-08-19 |
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