Steel frame anchoring type temporary supporting structure

Abstract

The invention discloses a steel frame anchoring type temporary supporting structure which comprises a steel arch frame, the steel arch frame is of an arch structure formed by splicing a plurality of standard section plates, anchor rod mounting bases are arranged on the standard section plates, and the anchor rod mounting bases can relatively move in the extending direction of the inner side walls of the standard section plates. A plurality of through holes allowing the anchor rods to penetrate through are formed in the outer side wall of the standard section plate in the extending direction of the standard section plate; each standard section plate is provided with a plurality of penetrating holes in the extending direction of the standard section plates, each anchor rod mounting seat is provided with a positioning device, and the positioning devices are used for locking and fixing the anchor rod mounting seats to the corresponding positions of the standard section plates after the standard section plates are moved. The anchor rod mounting seat can be conveniently and efficiently moved to a corresponding drilling position according to a pre-drilling position on a rock wall on the inner side of a tunnel, and the anchor rod mounting seat is locked at the position on a standard section plate by matching with a positioning device, so that the anchoring support operation and the subsequent process are ensured to be smoothly carried out.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a steel frame anchored temporary supporting structure. Background Art

[0002] Engineering soft rock refers to engineering rock mass that can produce significant plastic deformation under the action of engineering forces. If soft rock strata are encountered during tunnel construction, temporary support is basically required. The current common method is to use steel arch frames with anchor rods and then spray concrete on the support surface to form a retaining wall.

[0003] However, in the actual construction process, since most anchor holes are pre-drilled on the rock wall inside the tunnel, and the steel arch frame and the anchor rods are often welded together, after the steel arch frame is assembled, there is a mismatch between the positions of the anchor rods fixed on the steel arch frame and the anchor holes at the predetermined drill positions, resulting in individual anchor rods being unable to be smoothly inserted into the predetermined anchor holes, which in turn affects the current anchoring support operation and subsequent processes. Summary of the invention

[0004] In order to solve the technical problems raised in the above background technology, the present invention provides a steel frame anchored temporary support structure.

[0005] The present invention is implemented by the following technical scheme: a steel frame anchored temporary support structure, comprising a steel arch frame, wherein the steel arch frame is an arch structure formed by splicing a number of standard section plates, and is used to support the inner rock wall of the tunnel; The standard section plate is provided with an anchor rod mounting seat, and the anchor rod mounting seat can move relatively in the extension direction of the inner side wall of the standard section plate, and the standard section plate is provided with a plurality of through holes for the anchor rods to pass through on the outer side wall in the extension direction thereof; The anchor rod mounting seat is provided with a positioning device, and the positioning device is used to lock and fix the anchor rod mounting seat at the corresponding position of the standard section plate after the movement.

[0006] As a further improvement of the above solution, the standard section plate is a straight plate structure or a bent plate structure, and the cross section of the standard section plate is a U-shaped structure.

[0007] As a further improvement of the above scheme, a fixed ring is arranged on the inner side of the standard section plate, and two track blocks are arranged opposite to each other on the annular surface of the fixed ring facing the standard section plate. The standard section plate is provided with two track grooves which are slidably engaged with the corresponding track blocks.

[0008] As a further improvement of the above scheme, the positioning device includes a movable ring which is concentrically arranged at a distance from the standard section plate on the side of the fixed ring. The center of the movable ring is for the anchor rod to pass through, and the movable ring can rotate relative to the fixed ring. The fixed ring has two supporting arms fixed relatively to one side facing the standard section plate, a rotating cylinder is rotatably inserted on the supporting arm, and a clamping rod is threadedly inserted at one end of the rotating cylinder. The outer side of the clamping rod is sleeved and fixed with a limit plate, a telescopic rod is arranged between the limit plate and the support arm, and a clamping hole matching with the clamping rod is opened on the outer wall of the track block; An action component is arranged on one side of the fixed ring away from the standard section plate. When the moving ring rotates, the action component is used to guide the rotating drum to rotate.

[0009] As a further improvement of the above solution, a plurality of through holes are provided on the standard section plate along the extension direction of the groove body of the track groove, and the through holes are used for the clamping rod to pass through the track groove so as to be clamped into the clamping hole.

[0010] As a further improvement of the above scheme, the action assembly includes two limiting rods, two radially extending first limiting grooves are relatively formed on the annular surface of the fixed ring facing the movable ring, and two centripetally curved and extending second limiting grooves are relatively formed on the annular surface of the movable ring facing the fixed ring; One ends of the two limit rods are respectively slidably clamped in the two first limit grooves, and the other ends of the two limit rods are respectively slidably clamped in the two second limit grooves; A first sleeve is fixedly mounted on the outer wall of the limit rod, a first connecting rod extending radially in a centripetal direction is fixed on the outer wall of the first sleeve, one end of the first connecting rod is connected to a limit block, and a fourth limit groove which is slidably engaged with the limit block is radially opened on the annular surface of the fixed ring. A wire wheel is fixed to the other end of the rotating drum, a tensioned pull rope is wound around the wire wheel, and one end of the pull rope is fixed to the outer wall of the limit block. The support arm is provided with a winding hole, the rotating drum is inserted into the winding hole, and a first winding spring is sleeved on the outer side of the rotating drum, and the two ends of the first winding spring are respectively fixed on the outer wall of the rotating drum and the wall of the winding hole; When the limiting block moves to one side of the centripetal end in the fourth limiting groove, the first coil spring is in a compression deformation state.

[0011] As a further improvement of the above scheme, a second connecting rod parallel to the axial direction of the moving ring is fixed on the side of the limit block close to the moving ring, a second sleeve parallel to the first connecting rod is fixed at one end of the second connecting rod, a third connecting rod is concentrically inserted in the second sleeve, a clamping plate is fixed to the centripetal end of the third connecting rod, and a clamping space for clamping the anchor rod is formed between the two clamping plates.

[0012] As a further improvement of the above solution, an operating cylinder is inserted into the center of the movable ring so as to be axially movable, and the inner wall of the cylinder opening of the operating cylinder facing the fixed ring has a second slope. A pressure plate is elastically deflectedly disposed on one side of the two limit blocks facing the moving ring, a first slope that contacts and presses with the second slope is disposed on the outer wall of one end of the pressure plate, a cushion block is disposed on the end of the third connecting rod away from the clamping plate, a spring is sleeved on the outer side of the third connecting rod, and both ends of the spring are respectively connected to the cushion block and the outer wall of the second sleeve, When the pressure plate is parallel to the anchor rod, the spring is in a compressed state; Two third limiting grooves extending in the circumferential direction are relatively formed on the annular surface of the dynamic ring, and the two ends of the two third limiting grooves are respectively connected to the centripetal ends of the two second limiting grooves, and the third limiting grooves can be slidably engaged with the limiting rod.

[0013] As a further improvement of the above solution, a plurality of axially extending sliding grooves are circumferentially provided on the inner circumference of the moving ring, and a sliding block matching with the sliding grooves is provided on the outer wall of the operating cylinder.

[0014] As a further improvement of the above solution, the pressure plate is connected to the outer wall of the limit block through a second reel and a second coil spring, and when the pressure plate is parallel to the anchor rod, the second coil spring is in a compression deformation state.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The steel frame anchor type temporary support structure of the present invention can conveniently and efficiently move the anchor mounting seat to the corresponding drilling position according to the pre-drilling position on the rock wall inside the tunnel through the anchor mounting seat arranged on each standard section plate of the steel arch frame and a plurality of through holes arranged in the extension direction of the standard section plate, and cooperate with the positioning device to complete the locking of the anchor mounting seat at the position on the standard section plate, which is stable and reliable, ensuring the smooth progress of the anchor support operation and subsequent processes.

[0016] 2. The steel frame anchor type temporary support structure of the present invention is provided with a moving ring, a limit rod, a rotating cylinder, a clamping rod and an action component in the positioning device. The clamping rod can be clamped and fixed in the clamping hole of the track block only by rotating the moving ring, so that the anchor rod mounting seat can be locked in the corresponding position on the standard section plate, so that the subsequent anchor rod can be smoothly inserted into the corresponding anchor hole, and the disassembly and assembly are convenient and reliable.

[0017] 3. The steel frame anchor type temporary support structure of the present invention, by setting a second sleeve, a clamping plate, an operating cylinder, etc., can simultaneously realize the clamping and fixing of the anchor rod when the anchor rod mounting seat is fixed on the standard section plate, and through the axial movement and rotation of the operating cylinder, the operating cylinder can be rotatably screwed onto the outer side of the pressure plate to effectively maintain the clamping state of the clamping plate on the anchor rod always stable, and can indirectly and stably maintain the clamping state between the clamping rod and the clamping hole to improve the stability of the anchor rod support. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the structure of the present invention as a whole in an assembled state; Figure 2 for Figure 1 Schematic diagram of the structure of the middle fixed ring; Figure 3 for Figure 1 Schematic diagram of the structure of the middle moving ring; Figure 4 for Figure 1 A schematic diagram of a partial cross-sectional structure in which the middle anchor rod mounting seat is on the standard section plate and the anchor rod is in a locked state on the anchor rod mounting seat; Figure 5 for Figure 4 The enlarged structural diagram at A in the middle; Figure 6 for Figure 4 A schematic diagram of a state in which the middle limiting rod is located at an end of the third limiting groove away from the second limiting groove; Figure 7 for Figure 4 A schematic diagram of a partial cross-sectional structure in which the middle anchor rod mounting seat is on the standard section plate and the anchor rod is in an unlocked state on the anchor rod mounting seat; Figure 8 for Figure 7 The enlarged structural diagram at B in the middle; Fig. 9 for Figure 7 A schematic diagram of a state in which the middle limiting rod is located at an end of the second limiting groove away from the third limiting groove; Fig.10 for Figure 4 A schematic diagram of a partial cross-sectional structure in which the middle anchor rod mounting seat is in a locked state on the standard section plate, but the anchor rod is in a preliminary locked state on the anchor rod mounting seat; Fig.11 for Fig.10 The enlarged structural diagram at C in the middle; Fig.12 for Fig.10 Schematic diagram of the state where the middle limiting rod is located at the intersection of the second limiting groove and the third limiting groove.

[0019] Description of main symbols: 1. Standard section plate; 2. Anchor rod; 3. Perforation; 4. Fixed ring; 5. Moving ring; 6. Track block; 7. Track groove; 8. Limit rod; 9. First limit groove; 10. Second limit groove; 11. Third limit groove; 12. First sleeve; 13. First connecting rod; 14. Limit block; 15. Fourth limit groove; 16. Tensioning wheel; 17. Support arm; 18. Rotating drum; 19. Wire wheel; 20. Clamping rod; 21. Limiting plate; 22. Telescopic rod; 23. Clamping hole; 24. Second connecting rod; 25. Second sleeve; 26. Clamp plate; 27. Third connecting rod; 28. Pressure plate; 29. ​​First slope; 30. Operating cylinder; 31. Second slope; 32. Sliding block; 33. Sliding groove. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0021] Please combine Figures 1 to 12 The steel frame anchor type temporary support structure includes a steel arch frame, which is an arch structure composed of a plurality of standard section plates 1 and is used to support the inner rock wall of the tunnel. In this example, the standard section plates 1 can be connected by bolts for easy assembly and disassembly.

[0022] The standard section plate 1 is provided with an anchor rod mounting seat, which can move relatively in the extension direction of the inner side wall of the standard section plate 1. The standard section plate 1 is provided with a plurality of through holes 3 for the anchor rods 2 to pass through on its outer side wall in the extension direction.

[0023] A positioning device is provided on the anchor rod mounting seat, through which the anchor rod 2 is moved on the standard section plate 1 to a position corresponding to the anchor hole position of the rock wall inside the tunnel. The positioning device is used to lock and fix the anchor rod mounting seat at the corresponding position of the standard section plate 1 after the movement, so as to subsequently anchor the rock wall inside the tunnel.

[0024] The standard section plate 1 is a straight plate structure or a bent plate structure, and the cross section of the standard section plate 1 is a U-shaped structure.

[0025] A fixed ring 4 is arranged inside the standard section plate 1 , and two track blocks 6 are arranged opposite to each other on the annular surface of the fixed ring 4 facing the standard section plate 1 . The standard section plate 1 is provided with two track grooves 7 which are slidably engaged with the corresponding track blocks 6 .

[0026] The positioning device comprises a movable ring 5 which is coaxially arranged at intervals on a side of a fixed ring 4 away from the standard section plate 1 , the center of the movable ring 5 is for the anchor rod 2 to pass through, and the movable ring 5 can rotate relative to the fixed ring 4 .

[0027] Two supporting arms 17 are relatively fixed on the side of the fixed ring 4 facing the standard section plate 1, and a rotating cylinder 18 is rotatably inserted on the supporting arm 17. A clamping rod 20 is threadedly inserted at one end of the rotating cylinder 18, and a limit plate 21 is sleeved and fixed on the outer side of the clamping rod 20. A telescopic rod 22 is arranged between the limit plate 21 and the supporting arm 17, and a clamping hole 23 matching the clamping rod 20 is opened on the outer wall of the track block 6.

[0028] An action component is provided on the side of the fixed ring 4 away from the standard section plate 1 , and when the moving ring 5 rotates, the action component is used to guide the rotating drum 18 to rotate.

[0029] A plurality of through holes are provided on the standard section plate 1 along the extending direction of the track groove 7 , and the through holes are used for the clamping rod 20 to penetrate into the track groove 7 so as to be clamped into the clamping hole 23 .

[0030] The action assembly includes two limiting rods 8, two radially extending first limiting grooves 9 are relatively formed on the annular surface of the fixed ring 4 facing the movable ring 5, and two centripetally curved second limiting grooves 10 are relatively formed on the annular surface of the movable ring 5 facing the fixed ring 4.

[0031] One ends of the two limiting rods 8 are respectively slidably engaged in the two first limiting grooves 9 , and the other ends of the two limiting rods 8 are respectively slidably engaged in the two second limiting grooves 10 .

[0032] A first sleeve 12 is fixedly mounted on the outer wall of the limit rod 8, a first connecting rod 13 extending radially in the centripetal direction is fixed on the outer wall of the first sleeve 12, one end of the first connecting rod 13 is connected to a limit block 14, and a fourth limit groove 15 is radially opened on the annular surface of the fixed ring 4 to be slidably engaged with the limit block 14. A wire wheel 19 is fixed to the other end of the rotating drum 18. A tensioned pull rope is wound around the wire wheel 19. One end of the pull rope is fixed to the outer wall of the limit block 14. A winding hole is formed on the support arm 17, and a rotating drum 18 is inserted into the winding hole. A first winding spring is sleeved on the outer side of the rotating drum 18, and two ends of the first winding spring are respectively fixed on the outer wall of the rotating drum 18 and the wall of the winding hole.

[0033] When the limiting block 14 moves to one side of the centripetal end in the fourth limiting groove 15, the first coil spring is in a compression deformation state.

[0034] A tensioning wheel 16 is installed in the fourth limiting groove, and the pull rope is kept in a tensioned state by passing around the tensioning wheel 16.

[0035] In this embodiment, after the steel arch frame is assembled, the anchor rod mounting seat in each standard section plate 1 is first moved on each standard section plate 1 so that the through hole 3 is moved to the position corresponding to the anchor hole pre-drilled on the inner wall of the tunnel, and then the rotating ring 5 is rotated to make the groove wall of the second limiting groove 10 extending and bending centripetally rub and squeeze the limiting rod 8, and under the common limiting action of the first limiting groove 9, the limiting rod 8 drives the first connecting rod 13 to move centripetally. The first connecting rod 13 drives the limiting block 14 to move centripetally synchronously, and pulls the wire wheel 19 to rotate through the pull rope to drive the rotating drum 18 to rotate (the first coil spring is compressed and deformed), so that the rotating drum 18 and the clamping rod 20 are mutually threaded, and under the limiting action of the telescopic rod 22, the clamping rod 20 passes through the through hole and is clamped into the clamping hole 23 of the track block 6, so as to complete the fixing of the fixed ring 4 on the standard section plate 1, so that the subsequent anchor rod 2 can smoothly pass through the through hole 3 and directly insert into the anchor hole, playing the role of anchoring support.

[0036] Furthermore, a second connecting rod 24 axially parallel to the moving ring 5 is fixed to the side of the limit block 14 close to the moving ring 5, a second sleeve 25 parallel to the first connecting rod 13 is fixed to one end of the second connecting rod 24, a third connecting rod 27 is concentrically inserted in the second sleeve 25, a clamping plate 26 is fixed to the centripetal end of the third connecting rod 27, and a clamping space for clamping the anchor rod 2 is formed between the two clamping plates 26.

[0037] An operating cylinder 30 is inserted in the center of the movable ring 5 so as to be axially movable. The inner wall of the cylinder opening of the operating cylinder 30 facing the fixed ring 4 has a second slope 31. A pressure plate 28 is elastically deflected on one side of the two limit blocks 14 facing the moving ring 5. A first slope 29 that contacts and presses with the second slope 31 is provided on the outer wall of one end of the pressure plate 28. A cushion block is provided on the end of the third connecting rod 27 away from the clamping plate 26. A spring is sleeved on the outer side of the third connecting rod 27. Both ends of the spring are connected to the cushion block and the outer wall of the second sleeve 25 respectively. When the pressure plate 28 is parallel to the anchor rod 2, the spring is in a compressed state.

[0038] Two circumferentially extending third limiting grooves 11 are oppositely formed on the ring surface of the moving ring 5 , and the two ends of the two third limiting grooves 11 are respectively connected to the centripetal ends of the two second limiting grooves 10 , and the third limiting grooves 11 can be slidably engaged with the limiting rod 8 .

[0039] A plurality of axially extending sliding grooves 33 are circumferentially arranged on the inner circumference of the moving ring 5 , and a sliding block 32 matching with the sliding grooves 33 is arranged on the outer wall of the operating cylinder 30 .

[0040] The pressure plate 28 is connected to the outer wall of the limit block 14 through the second winding shaft and the second winding spring. When the pressure plate 28 is parallel to the anchor rod 2, the second winding spring is in a compressed deformation state.

[0041] The inner side wall of the operating cylinder 30 is provided with an internal thread, and the outer side wall of the pressure plate 28 is provided with an external thread. When the pressure plate 28 is deflected to be parallel to the anchor rod 2, the operating cylinder 30 can be rotatably screwed to the outer side of the pressure plate 28 through rotation and axial movement of the operating cylinder 30.

[0042] In this embodiment, when the limit block 14 moves centripetally, the limit block 14 can drive the second sleeve 25, the third connecting rod 27, and the clamping plate 26 to move centripetally synchronously through the second connecting rod 24, so that the two clamping plates 26 move together toward the direction of the anchor rod 2 to initially clamp and fix the anchor rod 2 (at this time, when the clamping rod 20 is fully inserted into the clamping hole 23, the limit rod 8 moves to the intersection of the second limit groove 10 and the third limit groove 11).

[0043] Then continue to rotate the movable ring 5. Since the third limit groove 11 is circumferentially distributed, the rotation of the movable ring 5 will not drive the limit rod 8 to continue to move centripetally, but the rotation of the movable ring 5 can drive the operating cylinder 30 to rotate synchronously, and cooperate with the manual push of the operating cylinder 30 toward the fixed ring 4, so that the second slope 31 contacts the first slope 29 of the pressure plate 28, forcing the pressure plate 28 to deflect and shrink centripetally (the second coil spring is compressed and deformed) until the pressure plate 28 deflects to a state parallel to the axial direction of the anchor rod 2, so that the operating cylinder 30 can be rotated and screwed onto the outer sides of the two pressure plates 28 under the joint action of rotation and axial movement, so as to indirectly keep the clamping state of the clamping rod 20 in the clamping hole 23 stable.

[0044] At the same time, the inner side of the pressure plate 28 will also contact the pad (spring compression) to drive the clamping plate 26 to move closer to the anchor rod 2 through the third connecting rod 27 to further clamp and fix the anchor rod 2. The pressure plate 28 can be screwed on by the operating cylinder 30 to rotate so that the clamping state of the clamping plate 26 on the anchor rod 2 can always remain stable.

[0045] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Steel frame anchored temporary support structure, characterized in that: It includes a steel arch frame, which is an arch structure formed by splicing a number of standard section plates and is used to support the inner rock wall of the tunnel; The standard section plate is provided with an anchor rod mounting seat, and the anchor rod mounting seat can move relatively in the extension direction of the inner side wall of the standard section plate, and the standard section plate is provided with a plurality of through holes for the anchor rods to pass through on the outer side wall in the extension direction thereof; The anchor rod mounting seat is provided with a positioning device, and the positioning device is used to lock and fix the anchor rod mounting seat at the corresponding position of the standard section plate after the movement.

2. The steel frame anchored temporary support structure according to claim 1, characterized in that: The standard section plate is a straight plate structure or a bent plate structure, and the cross section of the standard section plate is a U-shaped structure.

3. The steel frame anchored temporary support structure according to claim 1, characterized in that: A fixed ring is arranged on the inner side of the standard section plate, and two track blocks are arranged opposite to each other on the annular surface of the fixed ring facing the standard section plate. The standard section plate is provided with two track grooves which are slidably engaged with the corresponding track blocks.

4. The steel frame anchored temporary support structure according to claim 3, characterized in that: The positioning device comprises a movable ring which is arranged concentrically and spaced apart on the side of the fixed ring away from the standard section plate, the center of the movable ring is for the anchor rod to pass through, and the movable ring can rotate relative to the fixed ring. The fixed ring has two supporting arms fixed relatively to one side facing the standard section plate, a rotating cylinder is rotatably inserted on the supporting arm, and a clamping rod is threadedly inserted at one end of the rotating cylinder. The outer side of the clamping rod is sleeved and fixed with a limit plate, a telescopic rod is arranged between the limit plate and the support arm, and a clamping hole matching with the clamping rod is opened on the outer wall of the track block; An action component is arranged on one side of the fixed ring away from the standard section plate. When the moving ring rotates, the action component is used to guide the rotating drum to rotate.

5. The steel frame anchored temporary support structure according to claim 4, characterized in that: The standard section plate is provided with a plurality of through holes along the extending direction of the groove body of the track groove, and the through holes are used for the clamping rod to penetrate into the track groove so as to be clamped into the clamping hole.

6. The steel frame anchored temporary support structure according to claim 4, characterized in that: The action assembly comprises two limiting rods, two radially extending first limiting grooves are relatively formed on the annular surface of the fixed ring facing the movable ring, and two centripetally curved and extending second limiting grooves are relatively formed on the annular surface of the movable ring facing the fixed ring; One ends of the two limit rods are respectively slidably clamped in the two first limit grooves, and the other ends of the two limit rods are respectively slidably clamped in the two second limit grooves; A first sleeve is fixedly mounted on the outer wall of the limit rod, a first connecting rod extending radially in a centripetal direction is fixed on the outer wall of the first sleeve, one end of the first connecting rod is connected to a limit block, and a fourth limit groove which is slidably engaged with the limit block is radially opened on the annular surface of the fixed ring. A wire wheel is fixed to the other end of the rotating drum, a tensioned pull rope is wound around the wire wheel, and one end of the pull rope is fixed to the outer wall of the limit block. The support arm is provided with a winding hole, the rotating drum is inserted into the winding hole, and a first winding spring is sleeved on the outer side of the rotating drum, and the two ends of the first winding spring are respectively fixed on the outer wall of the rotating drum and the wall of the winding hole; When the limiting block moves to one side of the centripetal end in the fourth limiting groove, the first coil spring is in a compression deformation state.

7. The steel frame anchored temporary support structure according to claim 6, characterized in that: A second connecting rod parallel to the axial direction of the moving ring is fixed on the side of the limit block close to the moving ring, a second sleeve parallel to the first connecting rod is fixed on one end of the second connecting rod, a third connecting rod is concentrically inserted in the second sleeve, a clamping plate is fixed to the centripetal end of the third connecting rod, and a clamping space for clamping the anchor rod is formed between the two clamping plates.

8. The steel frame anchored temporary support structure according to claim 7, characterized in that: An operating cylinder is inserted into the center of the movable ring so as to be axially movable. The inner wall of the cylinder opening of the operating cylinder facing the fixed ring has a second slope. A pressure plate is elastically deflectedly disposed on one side of the two limit blocks facing the moving ring, a first slope that contacts and presses with the second slope is disposed on the outer wall of one end of the pressure plate, a cushion block is disposed on the end of the third connecting rod away from the clamping plate, a spring is sleeved on the outer side of the third connecting rod, and both ends of the spring are respectively connected to the cushion block and the outer wall of the second sleeve, When the pressure plate is parallel to the anchor rod, the spring is in a compressed state; Two third limiting grooves extending in the circumferential direction are relatively formed on the annular surface of the dynamic ring, and the two ends of the two third limiting grooves are respectively connected to the centripetal ends of the two second limiting grooves, and the third limiting grooves can be slidably engaged with the limiting rod.

9. The steel frame anchored temporary support structure according to claim 8, characterized in that: The inner circumference of the moving ring is provided with a plurality of axially extending sliding grooves, and the outer wall of the operating cylinder is provided with a sliding block matched with the sliding grooves.

10. The steel frame anchored temporary support structure according to claim 8, characterized in that: The pressure plate is connected to the outer wall of the limit block through a second winding shaft and a second winding spring. When the pressure plate is parallel to the anchor rod, the second winding spring is in a compressed deformation state.

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