Temporary supporting device for tunneling construction

By designing a combination of release rods and airbags, the problem of mine support devices shifting during vibration was solved, achieving stable support and anti-slip effects, and enhancing the safety of mine construction.

CN121451995AActive Publication Date: 2026-02-03UNIV OF SCI & TECH BEIJING
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Patent Information

Application Number
CN202511697831.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-19
Publication Date
2026-02-03
Estimated Expiration
2045-11-19

AI Technical Summary

Technical Problem

Existing mine support devices are prone to shifting when vibrating, causing ore to fall and hit workers. There is a lack of devices that can maintain support stability and increase friction when shifting.

Method used

A temporary support device for tunneling construction was designed. The translation plate and the rotating shaft are fixed by the release rod. The elastic force impacts the edge of the hole to cause the crushed stone to fall off. The falling stone is caught by the airbag. The rotating plate and the extension plate increase the anti-slip effect.

Benefits of technology

It effectively fixes the rotating shaft and translation plate, prevents stones from falling, increases friction, and improves the stability and anti-slip performance of the support device.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a temporary supporting device for tunneling construction. Comprising a plate body, translation plates are slidably arranged on the two sides of the plate body, rotating plates are rotatably arranged on one sides of the translation plates, a supporting plate is slidably arranged in the middle of the plate body, a rotating shaft is rotatably arranged on the lower surface of the plate body, and a releasing mechanism is arranged in the middle of the rotating shaft; the release mechanism comprises a release block, a release rod and a release spring. A release rod can be used for releasing, the translation plate can be fixed, a rotating shaft can be fixed, meanwhile, the edge of a hole can be impacted under the action of elastic force so that broken stones on the edge of the hole can fall off in advance, the release rod can enable an air bag to be inflated and swelled when fixing the translation plate, and the release rod supports the air bag; and through rotation of the rotating plate and stretching-out of the stretching-out plate, the upper portion of the plate body can be uneven, the anti-skid effect is improved, and the top of the plate body is tightly attached to a mine hole.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine support. BACKGROUND

[0002] As is known to all, with the increase of the use of underground resources, the mining depth is increasing. In order to successfully mine underground resources and avoid the danger and disaster of roof support, the staff needs to temporarily support the mine before the excavation project.

[0003] Due to the vibration of the machinery in the mine, the support device is prone to deviation. With the deviation of the support device, the edge ore falls and hits the staff. There is a need for a temporary support device for excavation construction that can maintain the support of the edge when the support deviates and change the structure above to increase the friction between the surface and the mine. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to provide a temporary support device for excavation construction, which can be released by the release rod, i.e. can fix the translation plate and also can fix the rotating shaft. At the same time, under the action of the elastic force, it can hit the edge of the hole to make the broken stones of the edge of the hole fall off in advance.

[0005] To solve the above technical problems, the present application provides the following technical scheme:

[0006] The plate body is provided with a translation plate on both sides, a rotating plate is provided on one side of the translation plate, a support plate is provided in the middle of the plate body, a rotating shaft is provided on the lower surface of the plate body, a release mechanism is provided in the middle of the rotating shaft, the release mechanism includes a release block, a release rod and a release spring, an extension block is integrally provided on one side of the translation plate, an extension column is provided on the edge of the rotating shaft, a fixed strip is provided on the edge of the plate body, a lifting block is integrally provided on the edge of the rotating shaft, an extension plate is in contact with the lifting block, an inflation mechanism is provided on the edge of the translation plate, and a back-and-forth block is provided inside the translation plate.

[0007] The technical scheme of the present application has the following beneficial technical effects:

[0008] The release rod can be released, i.e. can fix the translation plate and also can fix the rotating shaft. At the same time, under the action of the elastic force, it can hit the edge of the hole to make the broken stones of the edge of the hole fall off in advance. Moreover, when the release rod fixes the translation plate, it can also inflate the air bag. The release rod supports the air bag, so that the air bag can catch the falling stones. Through the rotation of the rotating plate and the extension of the extension plate, the plate body can be uneven on the top, which increases the anti-skid effect and makes the plate body tightly adhere to the mine. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 The schematic diagram of the plate body structure of the present application;

[0010] Figure 2 The present application Figure 1 The enlarged schematic diagram of A in the present application;

[0011] Figure 3 The schematic diagram of the plate body single-side cutting of the present application;

[0012] Figure 4 The schematic diagram of the plate body middle cutting of the present application;

[0013] Figure 5 The schematic diagram of the plate body side of the present application;

[0014] Figure 6 The schematic diagram of the single-side cutting of the present application;

[0015] The reference signs in the drawings are as follows: 1, plate body; 2, translation plate; 3, rotation plate; 4, support plate; 5, rotation shaft; 6, release block; 7, release rod; 8, release spring; 9, extension block; 10, extension column; 11, fixed strip; 12, lifting block; 13, extension plate; 14, shuttle block; 15, hydraulic push rod; 16, buckling block; 17, offset plate; 18, guide strip; 19, driving block; 20, driving strip; 21, driving groove; 22, guide groove; 23, shuttle spring; 24, perforation; 25, positioning block; 26, notch; 27, fixed groove; 28, support spring; 29, air bag; 30, inflation valve; 31, inclined block; 32, one-way block; 33, curved groove. DETAILED DESCRIPTION

[0016] The present embodiment is illustrated in the drawings attached to the specification Figures 1-6 The present embodiment is illustrated in the drawings attached to the specification Figure 1 The present embodiment is illustrated in the drawings attached to the specification Figure 5 As shown in the drawings attached to the specification, one side of the plate body 1 is hinged with a stand column, which is vertically supported on one side of the hole, so that the plate body 1 contacts the inner top of the hole for support. In order to make the plate body 1 have a certain support force, a hydraulic push rod 15 is arranged between the plate body 1 and the stand column, a rotation shaft 5 is arranged in the middle of the stand column, one side of the rotation shaft 5 is integrally provided with a release block 6, the release block 6 makes the release rod 7 stably support the plate body 1, and a round block is integrally arranged below the release rod 7, which is lapped on the release block 6 as shown in the drawings attached to the specification Figure 6As shown, since a section of the release rod 7 contacts the translation plate 2, the translation plate 2 can be supported to slide on both sides of the plate body 1. During the movement of the translation plate 2 towards both sides, the rotating shaft 5 can be driven to rotate counterclockwise. (The movement of the translation plate 2 towards both sides means that the displacement between the plate body 1 and the translation plate 2 in the present scheme occurs. The translation plate 2 does not move and the plate body 1 is offset due to the shaking of the plate body 1 itself. Because the translation plate 2 has a certain friction with the upper hole, the translation plate 2 maintains the position under the action of friction, and the plate body 1 moves.) The counterclockwise rotation of the rotating shaft 5 releases the release rod 7. Since the release spring 8 is arranged between the release rod 7 and the plate body 1, the release spring 8 is in a stretched state in the description Figure 1 , so that the rotating shaft 5 rotates, i.e. the release block 6 changes position, so that the release rod 7 is released. Since the position of the translation plate 2 at this time moves, i.e. the perforation 24 on the translation plate 2 and the movement track of the release rod 7 coincide, the release rod 7 can be inserted into the perforation 24 to fix the translation plate 2. In order to make the release rod 7 have stability after being inserted, an annular notch 26 is arranged in the middle of the release rod 7, and a reciprocating block 14 is arranged to slide on the inside of the perforation 24. One side of the reciprocating block 14 is provided with a reciprocating spring 23. The reciprocating block 14 can maintain the position and can press the reciprocating block 14 under the action of the inclined surface when the release rod 7 is inserted into the perforation 24. Because one end of the release rod 7 is arranged to be an inclined surface cutting, the reciprocating block 14 can be pressed. When the notch 26 reaches the position of the reciprocating block 14, the reciprocating block 14 is inserted into the notch 26 under the action of the reciprocating spring 23 (the notch 26 can be arranged in parallel with multiple groups), so that the release rod 7 cannot be separated from above. Because the position of the rotating shaft 5 makes the clamping block 16 correspond to the movement track of the release rod 7, i.e. the round block at one end of the release rod 7 enters the clamping block 16, at this time the top of the release rod 7 cannot be separated, the bottom cannot be moved, i.e. the release rod 7 is fixed. At the same time, the fixation of the release rod 7 makes the rotating shaft 5 unable to rotate, so that the rotating shaft 5 also cannot rotate, so that the whole of the present scheme is fixed. Because the plate body 1 of the present scheme is arranged symmetrically, the other translation plate 2 itself does not translate, so the release rod 7 cannot fix the other offset plate 17. The two release rods 7 of the present scheme are a group and are arranged in cross. In order to make the two release rods 7 be able to move, one section of the release rod 7 is circular, and the cross arrangement of the release rod 7 is semicircular. In this way, the space can be reasonably used. The release of the release rod 7 can fix the translation plate 2 and also fix the rotating shaft 5. At the same time, the elastic force can hit the hole edge to make the hole edge debris fall off in advance.

[0017] The last paragraph introduces that under the action of the release rod 7, the reciprocating block 14 can be pressed for a large distance and then reset for a small distance. Figure 2As shown, the upper part of the shuttle block 14 is a cylinder, moving upward can be inserted into a plurality of positioning blocks 25, between two adjacent positioning blocks 25 has a slot, which can make the cylinder above the shuttle block 14 fixed, can make the shuttle block 14 fixed rotating plate 3, so that the rotating plate 3 is fixed and cannot rotate angle, in order to make the cylinder can be inserted between the positioning block 25, can be set to left and right cylinder swing (with a certain swing space), and has spring support, even if not inserted also affect other functions of the scheme.

[0018] After the release lever 7 is extended, it is difficult to block the stone falling from the side of the plate body 1, so the release lever 7 can be set in multiple groups with the same interval, to ensure that the stone is blocked, and the scheme is provided with an air bag 29 on the side of the translation plate 2, which is made of extruded soft rubber and will automatically reset. The air bag 29 on the side of the translation plate 2 is in a dry state at this time, and the air inlet end of the air bag 29 has an inflation channel, which is sealed by the inflation valve 30. The inflation valve 30 has a spring support attached to the inflation channel. As the shuttle block 14 moves upward, the middle part of the shuttle block 14 has a space, and the side of the space is provided with a bevel block. Under the action of the bevel block 31, the inflation valve 30 is pulled out. The side of the inflation valve 30 also has a round block. The scheme has multiple top drive structures, which are all inside extending cylinders, and have spaces inside. A one-way block 32 is provided on one side of the bevel block 31. The inflation valve 30 is pulled out under the action of the bevel block 31. In order to prevent the inflation valve 30 from resetting, a one-way block 32 is provided. One side of the one-way block 32 has a spring reset, so that the inflation valve 30 cannot reset after being pulled out. The round block of the inflation valve 30 moves from the left side of the one-way block 32 to the right side of the one-way block 32 to maintain the pulled-out state. As the inflation valve 30 is pulled out, the air bag 29 will automatically expand outward under the action of the material. Multiple release levers 7 can provide support, preventing the stone from falling.

[0019] As shown in the accompanying drawings Figure 3As shown above, this solution releases the release rod 7 via the rotating shaft 5, but it does not explain how the rotating shaft 5 rotates. The rotation of the rotating shaft 5 relies on the extension block 9, which is integrally set on one side below the rotating shaft 5. Therefore, as the rotating shaft 5 moves to both sides, the extension block 9 also moves. An extension column 10 is integrally set on the side of the rotating shaft 5, which blocks a section of the extension block 9 in the direction of movement. Therefore, regardless of which set of translation plates 2 moves, the rotating shaft 5 rotates counterclockwise. As the translation plates 2 of this solution move, they drive the rotating plate 3 to move together. The side of the rotating plate 3 is supported by a support plate 4. When the translation plates 2 are not moving, the rotating plate 3 will not rotate downwards and has extremely strong stability. As the translation plates 2 move, one side of the rotating plate 3 is no longer supported by the support plate 4, causing the rotating plate 3 to sink downwards. As the rotating plate 3 sinks downwards, the entire plate 1 will have a sinking area.

[0020] As per the instruction manual Figure 6 As shown, with the recessed area above the plate 1, the rotation of the rotating shaft 5 can also cause the protruding plate 13 to move upward. This is because a support block 12 is provided on the side of the rotating shaft 5 away from the extension column 10, and the edge of the support block 12 contacts the protruding plate 13. There is a circular column below the protruding plate 13, which contacts the support block 12. As the rotating shaft 5 of this scheme rotates counterclockwise, the protruding plate 13 is lifted upward, so that the plate 1 of this scheme protrudes along the upper part of the recessed area. The recessed space is generated above, and the upward movement of the protruding plate 13 generates a raised space. In this way, the raised space and the recessed space of the plate 1 are adjacent to each other, forming an anti-slip function. The recessed and raised parts of the plate 1 make it difficult to move horizontally. Because the release rod 7 vibrates upward and the space is recessed, the rocks on the edge of the horizontal plate 2 can reach the recessed space to achieve the effect of storing rocks. Since the rocks are of different sizes, the movement of the rocks on the rotating plate 3 also has great friction.

[0021] As per the instruction manual Figure 3 As shown, after the rotating plate 3 rotates, in order to fill the space on one side of the rotating plate 3 and prevent rocks from entering one side of the support plate 4, thus preventing the rocks from providing an anti-slip effect, the extension block 9 of this scheme can move the fixing strip 11 as it moves towards the edge. The fixing strip 11 is located on the moving trajectory of the extension block 9. When the extension block 9 contacts the fixing strip 11, it can push the fixing strip 11 together. The top of the fixing strip 11 is stuck to the support plate 4. A support spring 28 is provided between the support plate 4 and the plate body 1. The support spring 28 is in a stretched state. The top of the fixing strip 11 is the result of an edge extension, as shown in the attached instruction manual. Figure 3As shown, the lower part of the support plate 4 is adapted to be clamped with a groove to fix the strip 11, and with the strip 11 moving horizontally, it is separated from the support plate 4, and the support plate 4 moves upward under the action of the support spring 28, and contacts the rock, and with the strip 11 being continuously driven by the extension block 9, the strip 11 can be lifted upward, and reaches the lower part of the strip 11 to support the strip 11.

[0022] As shown in the description Figure 4 As shown, a driving block 19 is arranged on one side of the extension strip, a torsion spring is arranged above the rotation center of the driving block 19, a driving strip 20 is arranged on one side of the driving block 19, the driving strip 20 is horizontally arranged on one side of the plate body 1, the driving strip 20 is provided with a driving groove 21, and the two sides of the driving groove 21 are attached to the driving block 19 (not completely attached), the present scheme has two driving blocks 19 (because there are two extension blocks 9), and the middle part is not filled with anything, so that the driving block 19 can rotate conveniently, at this time, one of the extension blocks 9 moves to make the driving strip 20 move in the moving direction of the extension block 9, and the other driving block 19 rotates to be separated from the driving groove 21, because one side of the plate body 1 is integrally provided with a horizontal groove, the groove is arranged on the other side of the plate body 1, and the groove is arranged on the other side of the plate body 1. Figure 4 As shown, the driving block 19 has a cylinder below, at this time, the cylinder does not enter the horizontal groove, the width of the horizontal groove is consistent with the diameter of the cylinder below the driving block 19, as long as the extension block 9 moves in the direction of the groove, the cylinder below the driving block 19 enters the groove, and the driving block 19 cannot rotate under the limitation of the horizontal groove, that is, the groove makes the moving driving block 19 rotate and fix, so that it can stably drive the driving strip 20 to move, and the other driving block 19 can rotate (because it does not enter the horizontal groove), so that it can rotate to be separated from the driving groove 21, in summary, the present scheme can drive the driving strip 20 to move together in the process that one of the extension blocks 9 moves horizontally, and the two-way control does not affect each other or intervene, the horizontal groove has two, and the middle part is not connected together, one side of the driving strip 20 is provided with a scale line, and the lower part of the driving strip 20 is a marking strip, which is fixed on the plate body 1 and does not move, and a corresponding camera arranged on the plate body 1 can observe how far the plate body 1 moves.

[0023] The last paragraph introduces that the driving block 19 of the present scheme can make the driving strip 20 move, and a curved groove is arranged above the driving strip 20. Figure 4Because it is cut in half, the bending groove also has another half, which is a circumferential central array (also described as rotating 180 degrees around the center). A guide bar 18 overlaps above the bending groove. The lateral movement of the drive bar 20 precedes the upward extension of the extension plate 13. The guide bar 18 slides laterally on one side of the extension plate 13. Therefore, the lateral movement of the drive bar 20 changes the position of the bending groove, which in turn changes the left and right position of the guide bar 18, corresponding to the offset direction of the guide bar 18 when it extends. Because the bending groove has another half, the movement of one of the translation plates 2 can cause the guide bar 18 to move in a specific direction (e.g., as shown in the instruction manual). Figure 4 The cut-out moving block 19 causes the guide bar 18 to move to the right. Similarly, the instruction manual appendix can be used to explain this. Figure 4 The movement of the drive block 19 (which moves the guide bar 18 to the left) provides offset for the extension plate 13 when it extends, because there is a triangle below the guide bar 18. The guide groove 22 is shown in the instruction manual. Figure 4 The guide groove 22 is cut laterally; its central front view is rectangular, and the left and right side front views of the guide strip 18 are right-angled trapezoids, each with one right-angled side and one hypotenuse. (See attached instruction manual.) Figure 4 The diagram shows both the right-angled side and the hypotenuse, but they are displayed opposite each other, with the right-angled side symmetrically arranged to one side of the hypotenuse (front view, as shown in the instruction manual). Figure 1 (From the perspective of...) Similarly, the right-angled side cannot pass through the triangle below the guide bar 18. Therefore, as the fixing bar 11 moves upward, the guide bar 18 also moves upward, causing it to shift in a specific direction. (Refer to the attached instruction manual.) Figure 1 If the left side is shifted, the extension plate 13 extends upward, and the upper rotating offset plate 17 extends. The offset plate 17 is limited by a guide bar 18 that slides laterally. Under the action of the guide bar 18, the offset plate 17 rotates clockwise by a certain angle, which can also increase the anti-slip function. If the upper part of the original plate 1 is blocked, even if the translation plate 2 cannot slide, it can still play an anti-slip role.

[0024] The both sides of the plate body 1 are slidably provided with the translation plate 2, one side of the translation plate 2 is rotatably provided with the rotating plate 3, the middle part of the plate body 1 is slidably provided with the supporting plate 4, the lower surface of the plate body 1 is rotatably provided with the rotating shaft 5, the middle part of the rotating shaft 5 is provided with the release mechanism, the release mechanism comprises the release block 6, the release rod 7 and the release spring 8, one side of the translation plate 2 is integrally provided with the extension block 9, the edge of the rotating shaft 5 is provided with the extension column 10, the edge of the plate body 1 is slidably provided with the fixed strip 11, the edge of the rotating shaft 5 is integrally provided with the supporting block 12, the upper side of the supporting block 12 is contacted with the extension plate 13, the edge of the translation plate 2 is provided with the inflation mechanism, the inside of the translation plate 2 is slidably provided with the back-and-forth block 14, the edge of the rotating shaft 5 is integrally provided with the release block 6, the surface of the release block 6 is contacted with the release rod 7, the release rod 7 is slidably provided in the middle part of the plate body 1, the edge of the release rod 7 is provided with the release spring 8, the middle part of the rotating shaft 5 is integrally provided with the buckling block 16, the extension plate 13 is slidably provided in the middle part of the plate body 1, the upper side of the extension plate 13 is rotatably provided with the deviation plate 17, the edge of the deviation plate 17 is slidably provided with the guide strip 18, one side of the extension block 9 is rotatably provided with the driving block 19, the edge of the driving block 19 is provided with the driving spring, the edge of the plate body 1 is slidably provided with the driving strip 20, the edge of the driving strip 20 is provided with the driving slot 21, the surface of the driving slot 21 is overlapped with the driving block 19, the edge of the plate body 1 is provided with the guide slot 22, the upper side of the driving strip 20 is provided with the bending slot 33, the surface of the bending slot 33 is overlapped with the guide strip 18, the edge of the back-and-forth block 14 is provided with the back-and-forth spring 23, the edge of the translation plate 2 is provided with the perforation 24, one end of the back-and-forth block 14 is provided in the inside of the perforation 24, the edge of the rotating plate 3 is integrally provided with the positioning block 25, the edge of the release rod 7 is provided with the notch 26, the edge of the supporting plate 4 is provided with the fixed slot 27 which is matched with the fixed strip 11, the release of the supporting plate 4 is provided with the supporting spring 28, the inflation mechanism comprises the air bag 29, the inflation valve 30, the inclined block 31 and the one-way block 32, the air bag 29 is provided in the edge of the translation plate 2, the inclined block 31 is integrally provided in the middle part of the back-and-forth block 14, the one-way block 32 is slidably provided in the middle part of the back-and-forth block 14, the edge of the air bag 29 is provided with the inflation channel, the surface of the inflation channel is slidably provided with the inflation valve 30, the edge of the plate body 1 is rotatably provided with the stand column, the edge of the stand column is hinged with the hydraulic push rod 34, the other end of the hydraulic push rod 34 is hinged with the plate body 1, the edge of the plate body 1 is provided with the marker strip.

[0025] Obviously, the above-mentioned embodiment is only an example for clearly illustrating, but not the limitation of the embodiment. For the ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived from the above are still within the protection scope of the patent application claims.

Claims

1. A temporary support device for tunneling construction, characterized in that, The system includes a plate (1), on both sides of which a translation plate (2) is slidably provided. A rotating plate (3) is rotatably provided on one side of the translation plate (2). A support plate (4) is slidably provided in the middle of the plate (1). A rotating shaft (5) is rotatably provided on the lower surface of the plate (1). A release mechanism is provided in the middle of the rotating shaft (5). The release mechanism includes a release block (6), a release rod (7), and a release spring (8). An extension block (9) is integrally provided on one side of the translation plate (2). An extension column (10) is provided on the edge of the rotating shaft (5). A fixing strip (11) is slidably provided on the edge of the plate (1). A support block (12) is integrally provided on the edge of the rotating shaft (5). An extension plate (13) contacts the top of the support block (12). An inflation mechanism is provided on the edge of the translation plate (2). A reciprocating block (14) is slidably provided inside the translation plate (2).

2. The temporary support device for tunneling construction according to claim 1, characterized in that, The release block (6) is integrally disposed on the side of the rotating shaft (5). The surface of the release block (6) is in contact with the release rod (7). The release rod (7) is slidably disposed in the middle of the plate (1). The side of the release rod (7) is provided with a release spring (8). The middle of the rotating shaft (5) is integrally disposed with a fastening block (16).

3. The temporary support device for tunneling construction according to claim 1, characterized in that, The extension plate (13) is slidably disposed in the middle of the plate body (1). An offset plate (17) is rotatably disposed above the extension plate (13). A guide strip (18) is slidably disposed on the side of the offset plate (17). A driving block (19) is rotatably disposed on one side of the extension block (9). A driving spring is disposed on the side of the driving block (19).

4. A temporary support device for tunneling construction according to claim 3, characterized in that, The plate (1) is slidably provided with a drive bar (20) on its side. The drive bar (20) has a drive groove (21) on its side. A drive block (19) overlaps the surface of the drive groove (21). The plate (1) has a guide groove (22) on its side. A bending groove (33) is provided above the drive bar (20). A guide bar (18) overlaps the surface of the bending groove (33).

5. A temporary support device for tunneling construction according to claim 1, characterized in that, The reciprocating block (14) is provided with a reciprocating spring (23) on its side, the translation plate (2) is provided with a perforation (24) on its side, one end of the reciprocating block (14) is provided inside the perforation (24), the rotating plate (3) is provided with a positioning block (25) integrally on its side, and the release rod (7) is provided with a notch (26) on its side.

6. A temporary support device for tunneling construction according to claim 1, characterized in that, The edge of the support plate (4) is provided with a fixing groove (27) that is adapted to the fixing strip (11), and the support plate (4) is provided with a support spring (28) for release.

7. A temporary support device for tunneling construction according to claim 1, characterized in that, The inflation mechanism includes an airbag (29), an inflation valve (30), an inclined block (31), and a one-way block (32). The airbag (29) is disposed on the side of the translation plate (2), the inclined block (31) is integrally disposed in the middle of the reciprocating block (14), and the one-way block (32) is slidably disposed in the middle of the reciprocating block (14).

8. A temporary support device for tunneling construction according to claim 7, characterized in that, An inflation channel is provided on the side of the airbag (29), and an inflation valve (30) is slidably provided on the surface of the inflation channel.

9. A temporary support device for tunneling construction according to claim 1, characterized in that, A column is rotatably provided on the side of the plate (1), and a hydraulic push rod (34) is hinged to the side of the column. The other end of the hydraulic push rod (34) is hinged to the plate (1).

10. A temporary support device for tunneling construction according to claim 1, characterized in that, The edge of the plate (1) is provided with a marking strip.

Citation Information

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