A tunnel construction hydraulic prop safety protection device

Abstract

This application relates to the field of hydraulic prop protection and discloses a safety protection device for hydraulic props used in tunnel construction. The device includes a base, a buffer assembly, a shielding and protective mechanism, a lower abutment stabilizing assembly, and an upper abutment stabilizing assembly. A hydraulic prop is mounted on top of the base, and a top cover is fixedly installed on the telescopic end of the hydraulic prop. The buffer assembly is located on top of the top cover and is used to prevent the vibration force generated during tunnel blasting from being directly transmitted to the hydraulic prop. The shielding and protective mechanism is located on one side of the hydraulic prop and is used to block flying rocks generated during tunnel blasting and to buffer the airflow impact force generated during tunnel blasting. This application has the following advantages and effects: it can effectively resist ground vibration, roof rock vibration, high-speed flying rock impact, and high-speed airflow impact generated during tunnel blasting, significantly improving the protection effect on the hydraulic prop, enhancing the stability of the hydraulic prop, ensuring stable operation of the hydraulic prop, and extending its service life.

Description

Technical Field

[0001] This application relates to the field of hydraulic prop protection technology, and in particular to a safety protection device for hydraulic props in tunnel construction. Background Technology

[0002] In the construction of underground engineering projects such as mountain tunnels and urban subway tunnels, hydraulic props are the core components of temporary support systems. They are mainly used to support the surrounding rock at the tunnel top, resist rock pressure, prevent roof falls and other safety accidents, and ensure the safety of construction personnel and equipment inside the tunnel. Currently, tunnel excavation commonly uses the drill-and-blast method. Due to the harsh tunnel construction environment, hydraulic props are inside the tunnel for extended periods. Therefore, it is necessary to provide safety protection for hydraulic props to improve their stability and service life during use.

[0003] In existing technologies, traditional hydraulic prop installation and protection structures have limited functionality. They typically consist of a protective casing around the hydraulic prop, providing only simple partial or complete shielding. Most lack tiered buffering and stress-relief functions, resulting in weak impact resistance. During blasting in tunnels, high-speed flying rocks and directional high-speed airflow are generated. The impact force from these impacts is rigidly transmitted to the hydraulic prop body. When subjected to instantaneous impacts and dynamic loads, the hydraulic prop's cylinder, internal seals, valves, and other structural components are prone to damage. Furthermore, the hydraulic prop's own structure and simple protective casing are insufficient to resist overturning moments. Under the influence of impacts and forces, the hydraulic prop is prone to tilting and toppling, leading to a sharp increase in safety risks. Therefore, we propose a safety protection device for hydraulic props in tunnel construction to address these problems.

[0004] Based on existing technology searches, the following known technical solutions exist:

[0005] Prior art 1: The external protective device for a hydraulic prop disclosed in patent announcement number CN219241953U includes a base plate and a protective mechanism with protective function set on the top of the base plate. The top of the base plate is provided with a hydraulic prop body, and the bottom outer wall of the hydraulic prop body is in contact with the top outer wall of the base plate. The top outer wall of the hydraulic prop body is provided with a piston, and a three-way valve is installed at both ends of the circumferential outer wall of the piston.

[0006] Prior art 2: Authorization announcement number CN216841733U discloses a single hydraulic strut for safe start-up, which includes a single hydraulic strut, a base fixedly connected to the bottom of the single hydraulic strut, a protective mechanism provided on the surface of the single hydraulic strut, and a support mechanism provided on the top of the single hydraulic strut. The protective mechanism includes a limiting shell.

[0007] Prior art 3: A protective device for a single hydraulic prop in mining, disclosed in patent announcement number CN115773139B, includes: a support component, a monitoring component, and a reinforcing component. The support component is mounted on the hydraulic prop and is used to press the monitoring component onto a crossbeam, which is used to support the ore layer. The monitoring component is mounted on the support component.

[0008] None of the aforementioned existing technologies have the function of graded buffering and stress relief against the impact of flying rocks and high-speed airflow generated at the moment of blasting, and are difficult to resist overturning moment.

[0009] The above search results show that the above technical solutions do not affect the novelty of the present invention, and the combination of the above prior art does not destroy the inventiveness of the present invention. Summary of the Invention

[0010] The purpose of this application is to provide a safety protection device for hydraulic props in tunnel construction, which can effectively resist ground vibration, roof rock vibration, high-speed flying rock impact and high-speed airflow impact generated by tunnel blasting, greatly improve the protection effect of hydraulic props, and enhance the stability and service life of hydraulic props.

[0011] The above-mentioned technical objective of this application is achieved through the following technical solution: a safety protection device for hydraulic props in tunnel construction, comprising a base, a buffer assembly, a shielding and protection mechanism, a lower abutment stabilizing assembly, and an upper abutment stabilizing assembly; a hydraulic prop is provided on the top of the base, and a top cover is fixedly installed on the telescopic end of the hydraulic prop; the buffer assembly is located on the top of the top cover and is used to block the vibration force generated by blasting construction in the tunnel from being directly transmitted to the hydraulic prop; the shielding and protection mechanism is located on one side of the hydraulic prop and is used to block flying rocks generated by blasting construction in the tunnel and to buffer the airflow impact force generated by blasting construction in the tunnel. The shielding and protection mechanism includes a rotation drive assembly, a support unloading assembly, a shielding assembly, and a support reinforcement assembly; the rotation drive assembly is located on the hydraulic prop; the support unloading assembly is located on the rotation drive assembly; the shielding assembly is located on the support unloading assembly, and the rotation drive assembly is used to control the horizontal rotation of the support unloading assembly and the shielding assembly; the support reinforcement assembly is located on the buffer assembly and is used to support and reinforce the shielding assembly; the lower abutment stabilizing assembly is located on the support unloading assembly; and the upper abutment stabilizing assembly is located on the support reinforcement assembly.

[0012] Optionally, the base includes a stainless steel top plate layer, an intermediate vibration isolation plate layer, and a wear-resistant anti-slip plate layer; the bottom of the hydraulic support is fixedly connected to the stainless steel top plate layer by bolts; the intermediate vibration isolation plate layer is fixedly connected to the bottom of the stainless steel top plate layer; and the wear-resistant anti-slip plate layer is fixedly connected to the bottom of the intermediate vibration isolation plate layer.

[0013] Optionally, the buffer assembly includes a pressure sensor, a supporting chassis, multiple vertical columns, a supporting top plate, multiple springs, multiple limiting blocks, and multiple damping rings. The pressure sensor is fixedly connected to the top of the top cover. The supporting chassis is fixedly connected to the top of the pressure sensor, and the top of the supporting chassis has multiple equally spaced annularly distributed circular holes. The bottom ends of the multiple vertical columns pass through the corresponding circular holes. The supporting top plate is fixedly installed on the top of the multiple vertical columns. The bottom ends of the multiple springs are all fixedly connected to the top of the supporting chassis, and the top ends of the multiple springs are all fixedly connected to the bottom of the supporting top plate. The multiple springs are respectively sleeved on the corresponding vertical columns. The multiple limiting blocks are respectively fixedly installed on the bottom ends of the corresponding vertical columns. The multiple damping rings are respectively fixedly installed in the corresponding circular holes, and the multiple vertical columns are respectively in damping sliding engagement with the inner ring wall of the corresponding damping ring.

[0014] Optionally, the rotary drive assembly includes a bearing, a rotating ring, an external gear ring, a servo motor, and a gear; the bearing is mounted on a hydraulic support, and the inner ring of the bearing is fixedly connected to the outer wall of the hydraulic support; the rotating ring is mounted on the bearing, and the inner ring wall of the rotating ring is fixedly connected to the outer ring of the bearing; the external gear ring is mounted on the rotating ring, and the inner ring of the external gear ring is fixedly connected to the outer ring wall of the rotating ring; the servo motor is fixedly mounted on the top of the base; the gear is fixedly mounted on the output shaft end of the servo motor, and the gear meshes with the external gear ring.

[0015] Optionally, the support and unloading assembly includes an L-shaped bracket, two horizontal columns, two springs, two limiting blocks, and two damping rings. The L-shaped bracket is fixedly installed on the outer wall of the rotating ring and located above the outer gear ring. Two circular holes are opened on one side of the L-shaped bracket. The two horizontal columns pass through the corresponding circular holes. One end of each of the two springs is fixedly connected to the side of the L-shaped bracket away from the hydraulic support, and the two springs are respectively sleeved on the corresponding horizontal column. The two limiting blocks are fixedly installed at the end of the corresponding horizontal column near the hydraulic support. The two damping rings are fixedly installed in the corresponding circular holes, and the two horizontal columns slide in a damping manner with the inner ring wall of the corresponding damping ring.

[0016] Optionally, the shielding assembly includes a lower arc-shaped baffle and an upper arc-shaped baffle; the lower arc-shaped baffle is fixedly installed at the end of the two horizontal columns one away from the hydraulic support, and the other ends of the two springs two are fixedly connected to the lower arc-shaped baffle, and a storage groove is provided on the top of the lower arc-shaped baffle; the upper arc-shaped baffle is slidably installed in the storage groove, the top of the upper arc-shaped baffle extends to the outside of the storage groove, and a circular hole three is provided on one side of the upper arc-shaped baffle.

[0017] Optionally, the support and reinforcement assembly includes a second bearing, a second rotating ring, a U-shaped plate, a guide crossbar, a third spring, a third damping ring, a vertical beam, a second horizontal column, a fourth spring, a third limiting block, and a fourth damping ring. The second bearing is sleeved on the bearing top plate, and the inner ring of the second bearing is fixedly connected to the outer wall of the bearing top plate. The second rotating ring is sleeved on the second bearing, and the inner ring wall of the second rotating ring is fixedly connected to the outer ring of the second bearing. The U-shaped plate is fixedly installed on the outer ring wall of the second rotating ring, and the top of the upper arc-shaped baffle is located inside the U-shaped plate. A rectangular hole is opened at the top of the U-shaped plate. The guide crossbar is fixedly installed inside the U-shaped plate and passes through the third circular hole. One end of the third spring rotates close to the U-shaped plate. One side of the inner wall of ring two is fixedly connected, and the other end of spring three is fixedly connected to the upper arc-shaped baffle; damping ring three is fixedly installed in the circular hole three, and the guide crossbar is damped and slidably engaged with the inner ring wall of damping ring three; the vertical beam is fixedly installed at the bottom of rotating ring two, and a circular hole four is opened on one side of the vertical beam; the horizontal column two passes through the circular hole four, and one end of the horizontal column two is fixedly connected to the upper arc-shaped baffle; one end of spring four is fixedly connected to the vertical beam, and the other end of spring four is fixedly connected to the upper arc-shaped baffle, and spring four is sleeved on the horizontal column two; the limiting block three is fixedly installed at the other end of the horizontal column two; damping ring four is fixedly installed in the circular hole four, and the horizontal column two is damped and slidably engaged with the inner ring wall of damping ring four.

[0018] Optionally, an L-shaped shield is fixedly installed on the top of the base, and the servo motor and gear are both located inside the L-shaped shield.

[0019] Optionally, the lower abutment stabilizing component includes an L-shaped plate, a pin, a push plate, an elastic rubber plate, and two torsion springs. The L-shaped plate is fixedly installed at the bottom of the L-shaped bracket and located between the base and the lower arc-shaped baffle. An installation hole is provided on the side of the L-shaped plate near the lower arc-shaped baffle. The pin is fixedly installed in the installation hole. The push plate is rotatably sleeved on the pin and is inclined. One side of the push plate abuts against the lower arc-shaped baffle. The elastic rubber plate is fixedly installed on the other side of the push plate. The elastic rubber plate is perpendicular to the push plate, and the bottom of the elastic rubber plate is higher than the bottom of the base. The ends of the two torsion springs that are far apart from each other are fixedly connected to the inner walls of the two sides of the installation hole, and the ends of the two torsion springs that are close to each other are fixedly connected to the two sides of the push plate. Both torsion springs are sleeved on the pin.

[0020] Optionally, the upper abutment stabilizing component includes a second pin, a second push plate, a second elastic rubber plate, and two second torsion springs; the second pin is fixedly installed inside the rectangular hole; the second push plate is rotatably sleeved on the second pin and is inclined, with one side of the second push plate abutting against the upper arc-shaped baffle; the second elastic rubber plate is fixedly installed on the other side of the second push plate, the second elastic rubber plate is perpendicular to the second push plate, and the top of the second push plate is lower than the top of the bearing top plate; the two second torsion springs are respectively fixedly connected to the inner walls of the two sides of the rectangular hole at their far ends, and respectively fixedly connected to the two sides of the second push plate at their close ends, and both second torsion springs are sleeved on the second pin.

[0021] This application includes at least one of the following beneficial technical effects:

[0022] 1. The base designed in this application consists of a stainless steel top plate layer, a middle vibration isolation plate layer, and a wear-resistant anti-slip plate layer. It can effectively block the upward transmission of ground vibrations while ensuring that the entire device does not shift. It provides stable support for the hydraulic support, buffer components, shielding and protection mechanism, lower abutment stabilization components, and upper abutment stabilization components above it. The buffer components are designed to reduce the transmission of vibrations from the tunnel roof to the hydraulic support and to monitor the support pressure in real time. Together with the synergistic effect of the base, it has the dual functions of safety monitoring and effective vibration reduction.

[0023] 2. This application designs a rotary drive component that can realize the horizontal rotation adjustment of the shielding component. It can change the shielding position of the hydraulic prop according to the needs of the blasting operation face, and adjust the shielding component to face the blasting direction to ensure the effectiveness of protection and avoid damage to the hydraulic prop from flying rocks and airflow impact.

[0024] 3. The support and stress-relieving components designed in this application can, on the one hand, stably support the shielding components and shield and protect the hydraulic prop. On the other hand, it can ensure that the loads of flying rocks and airflow borne by the shielding components are not directly transmitted to the hydraulic prop. Instead, they can be gradually dissipated through elasticity and damping, which can significantly reduce the lateral force on the prop and effectively prevent the hydraulic prop from tilting or collapsing.

[0025] 4. The shielding component designed in this application can effectively shield and protect the hydraulic prop, directly intercept high-speed flying stones, weaken the impact force of the frontal airflow, and use the arc-shaped curved surface structure of the lower arc-shaped baffle and the upper arc-shaped baffle to resist the explosive flying stones and high-speed airflow. The arc-shaped curved surface can divert the airflow and disperse the impact point, making it more resistant to impact and airflow wind load, and it is also compatible with hydraulic props of different specifications.

[0026] 5. The support and reinforcement components designed in this application can significantly improve the stability of the upper and lower arc-shaped baffles, and can further absorb the impact force of flying stones and the impact force of horizontal airflow, effectively absorb residual impact and airflow load, and further improve the protection effect of hydraulic props.

[0027] 6. The lower and upper abutment stabilizing components designed in this application can form temporary lower and upper support points respectively, which can effectively offset the overturning moment. Especially under extreme impact conditions such as vibrations and strong airflow impacts generated by blasting, they form bidirectional constraints on the lower arc baffle, upper arc baffle, and hydraulic prop, resisting the impact of strong airflow and large flying stones, further improving the protection effect of the hydraulic prop and enhancing the stability of the hydraulic prop. Attached Figure Description

[0028] Figure 1This is a three-dimensional structural diagram of the first embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the front sectional view of the base in the first embodiment of this application;

[0030] Figure 3 This is a front-view stereoscopic structural diagram of the buffer component in the first embodiment of this application;

[0031] Figure 4 This is a bottom-view perspective view of the buffer component in the first embodiment of this application;

[0032] Figure 5 This is a three-dimensional structural diagram of the shielding and protective mechanism in the first embodiment of this application;

[0033] Figure 6 This is a partial cross-sectional three-dimensional structural schematic diagram of the shielding and protective mechanism in the first embodiment of this application;

[0034] Figure 7 This is a three-dimensional structural diagram of the rotary drive assembly in the first embodiment of this application;

[0035] Figure 8 This is a three-dimensional structural diagram of the force-relieving component in the first embodiment of this application;

[0036] Figure 9 This is a front sectional three-dimensional structural schematic diagram of the occlusion component in the first embodiment of this application;

[0037] Figure 10 This is a three-dimensional structural diagram of the support and reinforcement component in the first embodiment of this application;

[0038] Figure 11 This is a three-dimensional structural diagram of the second embodiment of this application;

[0039] Figure 12 This is a partial cross-sectional perspective view of the three-dimensional structure of the second embodiment of this application;

[0040] Figure 13 This is a three-dimensional structural diagram of the supporting force-relieving component and the lower abutment stabilizing component in the second embodiment of this application;

[0041] Figure 14 This is a three-dimensional structural diagram of the supporting reinforcement component and the upper abutment stabilizing component in the second embodiment of this application;

[0042] Figure 15 This is a three-dimensional structural diagram of the lower abutment stabilization component in the second embodiment of this application;

[0043] Figure 16 This is a three-dimensional structural diagram of the upper abutment stabilization component in the second embodiment of this application.

[0044] In the diagram: 1. Base; 101. Stainless steel top plate; 102. Intermediate vibration isolation plate; 103. Wear-resistant anti-slip plate; 2. Hydraulic support; 3. Top cover; 4. Buffer assembly; 401. Pressure sensor; 402. Bearing chassis; 4021. Circular hole one; 403. Vertical column; 404. Bearing top plate; 405. Spring one; 406. Limiting block one; 407. Damping ring one; 5. Rotary drive assembly; 501. Bearing one; 502. Rotary ring one; 503. External gear ring; 504. Servo motor; 505. Gear; 6. Support and unloading assembly; 601. L-shaped bracket; 6011. Circular hole two; 602. Horizontal column one; 603. Spring two; 604. Limiting block two; 605. Damping ring two; 7. Shielding assembly; 701. Lower arc-shaped baffle; 7011. Storage slot; 702. Upper arc-shaped baffle; 7021. Three round holes; 8. Support and reinforcement assembly; 801. Two bearings; 802. Two rotating rings; 803. U-shaped plate; 8031. Rectangular hole; 804. Guide crossbar; 805. Three springs; 806. Three damping rings; 807. Vertical beam; 8071. Four round holes; 808. Two horizontal columns; 809. Four springs; 8010. Three limiting blocks; 801 1. Damping ring four; 9. L-shaped shield; 10. Lower abutment stabilizing component; 1001. L-shaped plate; 10011. Mounting hole; 1002. Pin one; 1003. Push plate one; 1004. Elastic rubber plate one; 1005. Torsion spring one; 11. Upper abutment stabilizing component; 1101. Pin two; 1102. Push plate two; 1103. Elastic rubber plate two; 1104. Torsion spring two. Detailed Implementation

[0045] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] First Embodiment

[0047] See Figures 1-10In the first embodiment of this application, a safety protection device for a hydraulic prop in tunnel construction includes: a base 1, a buffer assembly 4, and a shielding and protective mechanism; a hydraulic prop 2 is disposed on the top of the base 1, and a top cover 3 is fixedly installed on the telescopic end of the hydraulic prop 2. The hydraulic prop 2 serves as the core support component of the tunnel, used to bear the static load of the surrounding rock and the additional dynamic load of blasting. The structural composition and operating principle of the hydraulic prop 2 are existing mature technologies, which can be learned by those skilled in the art from the specification, technical manual, and other relevant materials, and will not be described in detail here; the buffer assembly 4 is disposed on the top of the top cover 3, used to block the vibration force generated by blasting construction in the tunnel from being directly transmitted to the hydraulic prop 2; the shielding and protective mechanism is located on one side of the hydraulic prop 2, used to... To block flying rocks generated during tunnel blasting and to buffer the impact of airflow generated during tunnel blasting, the shielding and protection mechanism includes a rotary drive assembly 5, a support and stress-relieving assembly 6, a shielding assembly 7, and a support and reinforcement assembly 8. The rotary drive assembly 5 is mounted on the hydraulic support 2. The support and stress-relieving assembly 6 is mounted on the rotary drive assembly 5. The shielding assembly 7 is mounted on the support and stress-relieving assembly 6. The rotary drive assembly 5 controls the horizontal rotation of the support and stress-relieving assembly 6 and the shielding assembly 7, so as to adjust the shielding assembly 7 to face the blasting direction, thereby blocking flying rocks and airflow impact and preventing damage to the hydraulic support 2 from flying rock impact and airflow impact. The support and reinforcement assembly 8 is mounted on the buffer assembly 4 and is used to support and reinforce the shielding assembly 7.

[0048] In this embodiment, the base 1 includes a stainless steel top plate layer 101, an intermediate vibration isolation plate layer 102, and a wear-resistant anti-slip plate layer 103; the bottom of the hydraulic support 2 is fixedly connected to the stainless steel top plate layer 101 by bolts; the intermediate vibration isolation plate layer 102 is fixedly connected to the bottom of the stainless steel top plate layer 101; the wear-resistant anti-slip plate layer 103 is fixedly connected to the bottom of the intermediate vibration isolation plate layer 102; the stainless steel top plate layer 101 can be made of 316 stainless steel plate or 304 composite steel plate, used to rigidly support the hydraulic support 2, and has the advantages of high strength, impact resistance, and resistance to tunnel moisture and corrosion; the intermediate vibration isolation plate layer... 102 can be made of high-damping vibration isolation rubber plate to block the transmission of seismic waves generated by tunnel blasting from the ground upwards. It can effectively absorb ground vibration and significantly reduce the transmission of vibration force to hydraulic support 2, preventing the internal seals and valves of hydraulic support 2 from being worn and leaking due to vibration. The wear-resistant anti-slip plate layer 103 can be made of 304 stainless steel patterned anti-slip plate to increase the contact friction with the tunnel ground, prevent the base 1 from slipping due to blasting vibration and airflow impact, thereby blocking the transmission of ground vibration and ensuring that the entire device does not shift, providing stable support for all its upper protective structures.

[0049] In this embodiment, the buffer assembly 4 includes a pressure sensor 401, a supporting base 402, multiple vertical columns 403, a supporting top plate 404, multiple springs 405, multiple limiting blocks 406, and multiple damping rings 407. The pressure sensor 401 is fixedly connected to the top of the top cover 3. The supporting base 402 is fixedly connected to the top of the pressure sensor 401, and the top of the supporting base 402 has multiple equally spaced circular holes 4021. The bottom ends of the multiple vertical columns 403 pass through the corresponding circular holes 4021. The supporting top plate 405... 4. Fixedly installed on the top of multiple vertical columns 403, the supporting base 402 and the supporting top plate 404 can be made of alloy structural steel No. 45 steel respectively; the bottom ends of multiple springs 405 are fixedly connected to the top of the supporting base 402, and the top ends of multiple springs 405 are fixedly connected to the bottom of the supporting top plate 404, and the multiple springs 405 are respectively sleeved on the corresponding vertical columns 403; multiple limiting blocks 406 are respectively fixedly installed on the bottom ends of the corresponding vertical columns 403; multiple damping rings 407 are respectively fixedly installed on the corresponding round holes 4021. Inside, multiple vertical columns 403 are respectively damped and slidingly engaged with the inner ring wall of the corresponding damping ring 407; the pressure sensor 401 is used to collect the pressure of the surrounding rock on the tunnel top surface in real time. Through the external controller and display screen, online monitoring of pressure load and overpressure early warning can be realized, and the risk of support overload can be predicted in advance. The wiring connection method and control method of the pressure sensor 401 with the external controller and display screen are conventional technical means that can be reasonably selected and implemented by those skilled in the art based on their ordinary technical knowledge without creative labor, so they will not be described in detail in this article; the design of multiple vertical columns 403 plays the role of guiding the running direction of the bearing top plate 404, ensuring that the bearing top plate 404 only makes vertical displacement when subjected to vibration force, and does not cause lateral displacement; the design of multiple springs 405 can elastically absorb the vibration of the surrounding rock on the tunnel top surface and the downward impact load of blasting, realize the flexible buffer energy absorption effect, and avoid rigid impact damage to the hydraulic support 2; by utilizing the damped sliding engagement of the vertical column 403 and the damping ring 407, the reciprocating bounce of the spring 405 can be effectively suppressed, the vibration force can be quickly attenuated, and resonance can be prevented.

[0050] In this embodiment, the rotary drive assembly 5 includes a bearing 501, a rotating ring 502, an external gear ring 503, a servo motor 504, and a gear 505. The bearing 501 is sleeved on the hydraulic support 2, and its inner ring is fixedly connected to the outer wall of the hydraulic support 2. The rotating ring 502 is sleeved on the bearing 501, and its inner ring wall is fixedly connected to the outer ring of the bearing 501. The external gear ring 503 is sleeved on the rotating ring 502, and its inner ring is fixedly connected to the outer ring wall of the rotating ring 502. The servo motor 504 is fixedly mounted. At the top of the base 1, gear 505 is fixedly mounted on the output shaft end of servo motor 504. Gear 505 meshes with external gear ring 503. Servo motor 504 is a reversible motor used to drive gear 505 to rotate forward or backward. By utilizing the meshing transmission action between gear 505 and external gear ring 503, the rotation of rotating ring 502 can be controlled. The appropriate model of servo motor 504 is selected according to the actual use. The wiring and control method of servo motor 504 are common knowledge in this field, and its working principle is a well-known technology, so it will not be described in detail in this article.

[0051] In this embodiment, the support unloading component 6 includes an L-shaped bracket 601, two horizontal columns 602, two springs 603, two limiting blocks 604, and two damping rings 605. The L-shaped bracket 601 is fixedly installed on the outer wall of the rotating ring 502 and located above the outer gear ring 503. Two circular holes 6011 are opened on one side of the L-shaped bracket 601. The two horizontal columns 602 pass through the corresponding circular holes 6011. One end of each of the two springs 603 is fixedly connected to the side of the L-shaped bracket 601 away from the hydraulic support 2, and the two springs 603 are respectively sleeved on the corresponding horizontal columns 602. The two limiting blocks 604 are fixedly installed on the end of the corresponding horizontal column 602 near the hydraulic support 2. The two damping rings 605 are fixedly installed on the corresponding horizontal columns 602. Inside the second circular hole 6011, the two horizontal columns 602 are respectively damped and slidably engaged with the inner ring wall of the corresponding damping ring 605. The design of the second spring 603 is used to absorb the impact force of flying stones and the impact force of horizontal airflow. It can convert rigid impact into elastic deformation, ensuring that the flying stone and airflow loads borne by the upper arc-shaped baffle 702 and the lower arc-shaped baffle 701 are not directly transmitted to the hydraulic support 2. They can be gradually dissipated through elasticity and damping, which greatly reduces the lateral force on the hydraulic support 2 and effectively prevents the hydraulic support 2 from tilting or collapsing. By utilizing the damped sliding engagement between the horizontal column 602 and the second damping ring 605, the reciprocating bounce of the second spring 603 can be effectively suppressed, eliminating the repeated oscillation of the second spring 603, quickly dissipating the impact energy, and preventing the upper arc-shaped baffle 702 and the lower arc-shaped baffle 701 from continuously shaking.

[0052] In this embodiment, the shielding component 7 includes a lower arc-shaped baffle 701 and an upper arc-shaped baffle 702. The lower arc-shaped baffle 701 is fixedly installed at the end of two horizontal columns 602 away from the hydraulic support 2, and the other ends of two springs 603 are fixedly connected to the lower arc-shaped baffle 701. A receiving groove 7011 is provided on the top of the lower arc-shaped baffle 701. The upper arc-shaped baffle 702 is slidably installed in the receiving groove 7011, and the top of the upper arc-shaped baffle 702 extends outside the receiving groove 7011. A circular hole 7021 is provided on one side of the upper arc-shaped baffle 702. By utilizing the synergistic effect of the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702, during blasting construction in the tunnel, It can effectively shield and protect the hydraulic prop 2. The arc-shaped curved surface structure of the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702 can resist the flying rocks and high-speed airflow from the explosion. The arc-shaped curved surface can divert the airflow and disperse the impact point, making it more resistant to impact and wind load. The design of the storage groove 7011 can realize the telescopic storage of the upper arc-shaped baffle 702. The overall shielding and protection height can be flexibly adjusted according to the support height and the position of the surrounding rock on the top surface, and it can be adapted to hydraulic prop 2 of different specifications. The lower arc-shaped baffle 701 and the upper arc-shaped baffle 702 can be made of AR400 wear-resistant and explosion-proof steel plate, which has the advantages of high hardness, impact resistance, dent resistance and resistance to repeated strong impacts.

[0053] In this embodiment, the support and reinforcement component 8 includes a second bearing 801, a second rotating ring 802, a U-shaped plate 803, a guide crossbar 804, a third spring 805, a third damping ring 806, a vertical beam 807, a second horizontal column 808, a fourth spring 809, a third limiting block 8010, and a fourth damping ring 8011. The second bearing 801 is sleeved on the bearing top plate 404, and the inner ring of the second bearing 801 is fixedly connected to the outer wall of the bearing top plate 404. The second rotating ring 802 is sleeved on the second bearing 801, and the inner ring wall of the second rotating ring 802 is fixedly connected to the outer ring of the second bearing 801. The U-shaped plate 803 is fixedly installed on the outer ring wall of the second rotating ring 802, and the upper arc-shaped baffle 70... The top of 2 is located inside the U-shaped plate 803, and a rectangular hole 8031 ​​is opened at the top of the U-shaped plate 803; the guide crossbar 804 is fixedly installed inside the U-shaped plate 803, and the guide crossbar 804 passes through the circular hole three 7021; one end of the spring three 805 is fixedly connected to the inner wall of the side of the U-shaped plate 803 near the rotating ring two 802, and the other end of the spring three 805 is fixedly connected to the upper arc-shaped baffle 702; the damping ring three 806 is fixedly installed inside the circular hole three 7021, and the guide crossbar 804 is damped and slidably engaged with the inner ring wall of the damping ring three 806; the vertical beam 807 is fixedly installed at the bottom of the rotating ring two 802, and a circular hole four 8071 is opened on one side of the vertical beam 807; Horizontal column 2 808 penetrates circular hole 4 8071, and one end of horizontal column 2 808 is fixedly connected to upper arc-shaped baffle 702; one end of spring 4 809 is fixedly connected to vertical beam 807, and the other end of spring 4 809 is fixedly connected to upper arc-shaped baffle 702, and spring 4 809 is sleeved on horizontal column 2 808; limiting block 3 8010 is fixedly installed at the other end of horizontal column 2 808; damping ring 4 8011 is fixedly installed in circular hole 4 8071, and horizontal column 2 808 and the inner ring wall of damping ring 4 8011 are in damping sliding fit; the design of spring 3 805 and spring 4 809 can further absorb the impact force of flying stones and the impact force of horizontal airflow, effectively absorbing residual impact. With respect to airflow load; by utilizing the damping sliding engagement of the guide crossbar 804 and the damping sliding engagement of the damping ring 806, and the damping sliding engagement of the crossbar 808 and the damping ring 8011, the reciprocating bounce of the springs 805 and 809 can be effectively suppressed; by utilizing the synergistic effect of the bearing 801, the rotating ring 802, the U-shaped plate 803, the guide crossbar 804, and the crossbar 808, it can be ensured that the rotating ring 802 rotates synchronously with the lower rotating ring 502, ensuring that the upper arc baffle 702 and the lower arc baffle 701 rotate synchronously without twisting or jamming, thereby greatly improving the stability of the upper arc baffle 702 and the lower arc baffle 701.

[0054] In this embodiment, an L-shaped shield 9 is fixedly installed on the top of the base 1. The servo motor 504 and gear 505 are both located inside the L-shaped shield 9, which is used to shield and protect the servo motor 504 and gear 505 from water.

[0055] In this embodiment, it should be noted that damping ring 407, damping ring 605, damping ring 806, and damping ring 8011 can all be made of high-damping nitrile rubber, which has excellent viscoelasticity, good vibration reduction and resonance suppression effects, and is resistant to tunnel mud and water and hydraulic media. It does not swell or harden after long-term immersion, has good self-lubricating properties, and is not easy to get stuck in dusty environments, thus meeting the usage requirements of blasting reciprocating vibration conditions.

[0056] With the above structure, the safety protection device for hydraulic props in tunnel construction provided by this application allows the base 1 to be placed stably on the tunnel floor at the required support position. Then, the hydraulic prop 2 is installed and fixed on the top of the base 1 using bolts. By controlling the extension and retraction end of the hydraulic prop 2 to extend to a suitable length, the bearing plate 404 is pressed against the surrounding rock on the tunnel roof. The pressure sensor 401 is used to detect the pressing force in real time until it reaches the preset value, thus enabling tunnel support and protection.

[0057] Before tunnel blasting operations, the servo motor 504 is started to run forward or reverse, driving the gear 505 to rotate. Through the meshing transmission between the gear 505 and the outer gear ring 503, the rotating ring 502 rotates. The rotating ring 502 simultaneously drives the support unloading component 6, the shielding component 7, the rotating ring 802, the U-shaped plate 803, and the vertical beam 807 to rotate horizontally. When the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702 of the shielding component 7 are adjusted to face the appropriate blasting direction, that is, when the shielding and protection angle of the hydraulic support 2 is appropriate, the servo motor 504 is stopped, and then the construction personnel can carry out the blasting operation.

[0058] During and after the blasting, the stainless steel top plate layer 101 of the base 1 can rigidly bear the vertical load and lateral force of the hydraulic support 2, ensuring that the hydraulic support 2 is installed stably and the force is uniform. The intermediate seismic isolation plate layer 102 can effectively block the ground seismic waves generated by the blasting from being transmitted to the hydraulic support 2. Relying on the elastic deformation and viscoelastic damping of the rubber material, the vibration mechanical energy is converted into heat energy and dissipated, effectively blocking the ground vibration from being transmitted upward to the hydraulic support 2. This can effectively prevent the cylinder, internal seals, valves and other parts of the hydraulic support 2 from being worn and damaged by vibration.

[0059] When the blasting causes vibration of the surrounding rock on the tunnel roof and vertical impact load to act downwards, it first contacts the bearing top plate 404, and then is transmitted to multiple springs 405 distributed in an evenly spaced ring. The multiple springs 405 undergo elastic deformation to absorb vertical impact and vibration, avoiding the direct downward pressure of rigid force on the hydraulic support 2. At the same time, by utilizing the damping sliding cooperation formed by each vertical column 403 and the corresponding damping ring 407, the reciprocating bounce of multiple springs 405 can be effectively suppressed, the vibration can be quickly attenuated, and structural resonance can be prevented. The pressure sensor 401 collects the pressure of the surrounding rock on the roof and the blasting impact pressure data in real time, and the external controller and display screen realize online load monitoring.

[0060] When the flying rocks and high-speed airflow generated by the blast impact the lower arc-shaped baffle 701 or the upper arc-shaped baffle 702, they will push the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702 to move synchronously. The impact force of the flying rocks and the impact force of the airflow are transmitted to the first horizontal column 602 and the second horizontal column 808 through the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702. This will push the first horizontal column 602 and the second horizontal column 808 to slide towards the hydraulic support 2. During the sliding process, the second spring 603, the third spring 805 and the fourth spring 809 are compressed. Relying on elastic deformation, they effectively absorb the horizontal impact energy caused by the flying rocks and high-speed airflow, converting the rigid impact into a flexible buffer, and consuming the impact energy in layers. At the same time, by utilizing the damping sliding cooperation between the first horizontal column 602 and the second damping ring 605, the damping sliding cooperation between the second horizontal column 808 and the fourth damping ring 8011, and the damping sliding cooperation between the guide horizontal bar 804 and the third damping ring 806, the reciprocating bounce of the second spring 603, the third spring 805, and the fourth spring 809 can be effectively suppressed, thereby achieving an effective buffering and energy absorption effect and preventing damage to the hydraulic support 2. At the same time, by utilizing the arc-shaped surface structure of the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702, the high-speed airflow can be diverted and the impact point of the flying stone can be dispersed, weakening the frontal wind pressure and impact destructive force, thereby achieving direct and stable interception of high-speed flying stones and blocking the airflow impact.

[0061] Second Embodiment

[0062] Based on the first embodiment of this application, a safety protection device for hydraulic props in tunnel construction is provided. The second embodiment of this application proposes another safety protection device for hydraulic props in tunnel construction. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0063] The second embodiment of this application will be further described below with reference to the accompanying drawings and embodiments.

[0064] See Figures 11-16 A safety protection device for hydraulic props in tunnel construction further includes: a lower abutment stabilizing component 10 and an upper abutment stabilizing component 11; the lower abutment stabilizing component 10 is installed on the support unloading component 6; the upper abutment stabilizing component 11 is installed on the support reinforcement component 8.

[0065] In this embodiment, the lower abutment stabilizing component 10 includes an L-shaped plate 1001, a pin 1002, a push plate 1003, an elastic rubber plate 1004, and two torsion springs 1005. The L-shaped plate 1001 is fixedly installed at the bottom of the L-shaped bracket 601 and located between the base 1 and the lower arc-shaped baffle 701. The L-shaped plate 1001 has a mounting hole 10011 on the side near the lower arc-shaped baffle 701. The pin 1002 is fixedly installed in the mounting hole 10011. The push plate 1003... 003 is rotatably mounted on pin 1002 and is inclined. One side of push plate 1003 abuts against lower arc-shaped baffle 701. Elastic rubber plate 1004 is fixedly installed on the other side of push plate 1003. Elastic rubber plate 1004 is perpendicular to push plate 1003. The bottom of elastic rubber plate 1004 is slightly higher than the bottom of base 1, which ensures that the bottom of elastic rubber plate 1004 does not contact the ground inside the tunnel under normal conditions. When lower arc-shaped baffle 701 is in use... When the upper arc-shaped baffle 702 is impacted by flying rocks or displaced by airflow, the lower arc-shaped baffle 701 will push the push plate 1003 to rotate around the pin 1002. The elastic rubber plate 1004 will rotate with the push plate 1003 and deform upon contact with the tunnel surface. The elastic rubber plate 1004 will adaptively press against the tunnel surface, forming a temporary lower support point to counteract the overturning moment from below, further preventing the lower part of the hydraulic support 2 from tilting or falling over; both The ends of the torsion springs 1005 that are far apart from each other are fixedly connected to the inner walls of the two sides of the mounting hole 10011, and the ends of the two torsion springs 1005 that are close to each other are fixedly connected to the two sides of the push plate 1003. Both torsion springs 1005 are sleeved on the pin 1002. The design of the torsion springs 1005 is such that when the push plate 1003 is not under force, it can automatically control the push plate 1003 to drive the elastic rubber plate 1004 to return to its original position, without affecting the normal rotation and adjustment of the shielding component 7.

[0066] In this embodiment, the upper abutment stabilization component 11 includes a second pin 1101, a second push plate 1102, a second elastic rubber plate 1103, and two second torsion springs 1104. The second pin 1101 is fixedly installed in the rectangular hole 8031. The second push plate 1102 is rotatably sleeved on the second pin 1101 and is inclined. One side of the second push plate 1102 abuts against the upper arc-shaped baffle 702. The second elastic rubber plate 1103 is fixedly installed on the other side of the second push plate 1102. The second elastic rubber plate 1103 is perpendicular to the second push plate 1102. The top of the second push plate 1102 is slightly lower than the top of the bearing top plate 404, which can ensure that the top of the second elastic rubber plate 1103 does not contact the top surface of the tunnel under normal conditions. When the lower arc-shaped baffle 701 or the upper arc-shaped baffle 702 is displaced by the impact of flying stones or airflow, the upper arc-shaped baffle 702 will push... Push plate 2 1102 rotates around pin 2 1101. Elastic rubber plate 2 1103 rotates with push plate 2 1102 and comes into contact with the tunnel top surface, causing compression deformation. Elastic rubber plate 2 1103 will adaptively press against the tunnel top surface to form a temporary upper support point, offsetting the overturning moment from above and further preventing the upper part of the hydraulic support 2 from being unbalanced or tilted. The two torsion springs 2 1104 are fixedly connected to the inner walls of the two sides of the rectangular hole 8031 ​​at their far ends and to the two sides of the push plate 2 1102 at their near ends. Both torsion springs 2 1104 are sleeved on pin 2 1101. The design of the torsion springs 2 1104 allows push plate 2 1102 to automatically control the elastic rubber plate 2 1103 to return to its original position when push plate 2 1102 is not under force, without affecting the normal rotation adjustment of the shielding component 7.

[0067] In this embodiment, it should be noted that both the elastic rubber sheet 1004 and the elastic rubber sheet 1103 can be made of high-damping nitrile rubber, which has excellent damping performance, can help absorb residual vibration and impact energy during extrusion, and further reduce vibration. In addition, it is resistant to mud and water, dust, and abrasive wear, and is not easily scratched when in contact with gravel and concrete. It has strong resilience and can quickly return to its original shape after reset without permanent deformation, which meets the working conditions of blasting, alternating dry and wet conditions and small amount of water spraying in tunnels.

[0068] With the above structure, when the hydraulic prop safety protection device for tunnel construction provided in this application is in use, during the movement of the lower arc-shaped baffle 701 and the upper arc-shaped baffle 702 due to impact from flying rocks or high-speed airflow, the lower arc-shaped baffle 701 will push the push plate 1003 to rotate around the pin 1002, causing the elastic rubber plate 1004 to elastically deform and adaptively press against the tunnel ground, forming a lower support point to offset the overturning moment and prevent the lower part of the hydraulic prop 2 from slipping or tilting. The upper arc-shaped baffle 702 will push the push plate 1102 to rotate around the pin 1101, causing the elastic rubber plate 1103 to elastically deform and adaptively press against the surrounding rock at the top of the tunnel, forming an upper support point to further offset the overturning moment. The torque prevents the upper part of the hydraulic prop 2 from being unbalanced or tilted, and further enhances the protection effect and stability of the hydraulic prop 2 through reinforcement support in both the upper and lower directions. When the blasting ends and the impact force disappears, springs 1 (405), 2 (603), 3 (805), and 4 (809) all return to their initial state, causing the bearing top plate 404, lower arc baffle 701, and upper arc baffle 702 to return to their initial state. At the same time, torsion springs 1 (1005) and 2 (1104) also release their elastic force and return to their initial state, causing push plate 1 (1003) and elastic rubber plate 1 (1004) to automatically reset, and push plate 2 (1102) and elastic rubber plate 2 (1103) to automatically reset.

[0069] The above provides a detailed description of a safety protection device for hydraulic props in tunnel construction provided by this application. Specific embodiments have been used to illustrate the principles and implementation methods of this application. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A safety protection device for hydraulic props in tunnel construction, characterized in that, include: The base (1) is provided with a hydraulic support (2) on the top, and a top cover (3) is fixedly installed on the telescopic end of the hydraulic support (2). A buffer assembly (4) is provided on top of the top cover (3) to block the vibration force generated by blasting construction in the tunnel from being directly transmitted to the hydraulic support (2). A shielding and protective mechanism is located on one side of the hydraulic support (2) and is used to block flying rocks generated during blasting operations in the tunnel and to buffer the airflow impact force generated during blasting operations in the tunnel. The shielding and protective mechanism includes a rotary drive assembly (5), a support unloading assembly (6), a shielding assembly (7), and a support reinforcement assembly (8). The rotary drive assembly (5) is mounted on the hydraulic support (2). The support unloading assembly (6) is mounted on the rotary drive assembly (5). The shielding assembly (7) is mounted on the support unloading assembly (6). The rotary drive assembly (5) is used to control the horizontal rotation of the support unloading assembly (6) and the shielding assembly (7). The support reinforcement assembly (8) is mounted on the buffer assembly (4) and is used to support and reinforce the shielding assembly (7). The lower abutment stabilization component (10) is disposed on the support unloading component (6); The upper abutment stabilization component (11) is disposed on the support reinforcement component (8).

2. The safety protection device for hydraulic props in tunnel construction according to claim 1, characterized in that, The base (1) includes: The bottom of the hydraulic support (2) is fixedly connected to the stainless steel top plate layer (101) by bolts. The intermediate vibration isolation plate layer (102) is fixedly connected to the bottom of the stainless steel top plate layer (101); The wear-resistant anti-slip plate layer (103) is fixedly connected to the bottom of the intermediate vibration isolation plate layer (102).

3. The safety protection device for hydraulic props in tunnel construction according to claim 1, characterized in that, The buffer component (4) includes: A pressure sensor (401) is fixedly connected to the top of the top cover (3); The support chassis (402) is fixedly connected to the top of the pressure sensor (401), and the top of the support chassis (402) has a plurality of circular holes (4021) distributed in an equal-spaced ring. Multiple vertical columns (403) have their bottom ends passing through the corresponding circular holes (4021). The supporting top plate (404) is fixedly installed on the top of the plurality of vertical columns (403); Multiple springs (405) are fixedly connected at their bottom ends to the top of the supporting base plate (402), and at their top ends to the bottom of the supporting top plate (404). The multiple springs (405) are respectively sleeved on the corresponding vertical column (403). Multiple limiting blocks (406) are fixedly installed at the bottom end of the corresponding vertical column (403); Multiple damping rings (407) are fixedly installed in the corresponding circular holes (4021), and multiple vertical columns (403) are respectively damped and slidably engaged with the inner ring wall of the corresponding damping ring (407).

4. The safety protection device for hydraulic props in tunnel construction according to claim 3, characterized in that, The rotary drive assembly (5) includes: Bearing 1 (501) is sleeved on the hydraulic support (2), and the inner ring of bearing 1 (501) is fixedly connected to the outer wall of the hydraulic support (2). A rotating ring (502) is sleeved on the bearing (501), and the inner ring wall of the rotating ring (502) is fixedly connected to the outer ring of the bearing (501). An external gear ring (503) is sleeved on the rotating ring (502), and the inner ring of the external gear ring (503) is fixedly connected to the outer ring wall of the rotating ring (502). A servo motor (504) is fixedly mounted on the top of the base (1); A gear (505) is fixedly installed on the output shaft end of the servo motor (504), and the gear (505) meshes with the external gear ring (503).

5. The safety protection device for hydraulic props in tunnel construction according to claim 4, characterized in that, The supporting stress relief assembly (6) includes: The L-shaped bracket (601) is fixedly installed on the outer side wall of the rotating ring (502) and located above the outer gear ring (503). Two round holes (6011) are opened on one side of the L-shaped bracket (601). Two horizontal posts (602) pass through the corresponding circular holes (6011). Two springs (603) are fixedly connected at one end to the side of the L-shaped bracket (601) away from the hydraulic support (2), and the two springs (603) are respectively sleeved on the corresponding horizontal column (602); Two limiting blocks (604) are respectively fixedly installed at one end of the corresponding horizontal column (602) near the hydraulic support (2); Two damping rings (605) are fixedly installed in the corresponding circular holes (6011), and the two horizontal columns (602) are respectively damped and slidably engaged with the inner ring wall of the corresponding damping ring (605).

6. The safety protection device for hydraulic props in tunnel construction according to claim 5, characterized in that, The shielding component (7) includes: The lower arc-shaped baffle (701) is fixedly installed at one end of the two horizontal columns (602) away from the hydraulic support (2), and the other ends of the two springs (603) are fixedly connected to the lower arc-shaped baffle (701). The top of the lower arc-shaped baffle (701) is provided with a storage groove (7011). An upper arc-shaped baffle (702) is slidably installed in the storage groove (7011). The top of the upper arc-shaped baffle (702) extends to the outside of the storage groove (7011). A circular hole (7021) is provided on one side of the upper arc-shaped baffle (702).

7. The safety protection device for hydraulic props in tunnel construction according to claim 6, characterized in that, The support and reinforcement component (8) includes: Bearing 2 (801) is sleeved on the bearing top plate (404), and the inner ring of bearing 2 (801) is fixedly connected to the outer side wall of the bearing top plate (404); Rotating ring two (802) is sleeved on bearing two (801), and the inner ring wall of rotating ring two (802) is fixedly connected to the outer ring of bearing two (801); The U-shaped plate (803) is fixedly installed on the outer ring wall of the rotating ring two (802). The top of the upper arc baffle (702) is located inside the U-shaped plate (803). A rectangular hole (8031) is opened on the top of the U-shaped plate (803). A guide bar (804) is fixedly installed inside the U-shaped plate (803), and the guide bar (804) passes through the three circular holes (7021). One end of the spring three (805) is fixedly connected to the inner wall of the U-shaped plate (803) near the rotating ring two (802), and the other end of the spring three (805) is fixedly connected to the upper arc-shaped baffle (702). Damping ring three (806) is fixedly installed in the circular hole three (7021), and the guide crossbar (804) is in damping sliding fit with the inner ring wall of the damping ring three (806); A vertical beam (807) is fixedly installed at the bottom of the rotating ring two (802), and a round hole four (8071) is opened on one side of the vertical beam (807). The second horizontal column (808) passes through the fourth circular hole (8071), and one end of the second horizontal column (808) is fixedly connected to the upper arc-shaped baffle (702); Spring 4 (809) is fixedly connected at one end to the vertical beam (807) and at the other end to the upper arc-shaped baffle (702). Spring 4 (809) is sleeved on the horizontal column 2 (808). Limiting block three (8010) is fixedly installed at the other end of the horizontal column two (808); Damping ring four (8011) is fixedly installed in the circular hole four (8071), and the horizontal column two (808) is in damping sliding fit with the inner ring wall of the damping ring four (8011).

8. The safety protection device for hydraulic props in tunnel construction according to claim 4, characterized in that, An L-shaped shield (9) is fixedly installed on the top of the base (1), and the servo motor (504) and the gear (505) are both located inside the L-shaped shield (9).

9. The safety protection device for hydraulic props in tunnel construction according to claim 6, characterized in that, The lower contact stabilization component (10) includes: The L-shaped plate (1001) is fixedly installed at the bottom of the L-shaped bracket (601) and located between the base (1) and the lower arc-shaped baffle (701). The L-shaped plate (1001) has a mounting hole (10011) on the side near the lower arc-shaped baffle (701). Pin 1 (1002) is fixedly installed in the mounting hole (10011); Push plate 1 (1003) is rotatably sleeved on pin 1 (1002) and is inclined. One side of push plate 1 (1003) abuts against the lower arc-shaped baffle (701). An elastic rubber plate (1004) is fixedly installed on the other side of the push plate (1003). The elastic rubber plate (1004) is perpendicular to the push plate (1003), and the bottom of the elastic rubber plate (1004) is higher than the bottom of the base (1). Two torsion springs (1005) are fixedly connected at opposite ends to the inner walls of the mounting hole (10011) on both sides, and at opposite ends to the sides of the push plate (1003) on both sides. Both torsion springs (1005) are sleeved on the pin (1002).

10. The safety protection device for hydraulic props in tunnel construction according to claim 7, characterized in that, The upper contact stabilization component (11) includes: Pin 2 (1101) is fixedly installed in the rectangular hole (8031); Push plate two (1102) is rotatably sleeved on pin two (1101) and is inclined. One side of push plate two (1102) abuts against the upper arc-shaped baffle (702). Elastic rubber plate two (1103) is fixedly installed on the other side of push plate two (1102). Elastic rubber plate two (1103) is perpendicular to push plate two (1102). The top of push plate two (1102) is lower than the top of the bearing top plate (404). Two torsion springs (1104) are fixedly connected at opposite ends to the inner walls of the rectangular hole (8031) on both sides, and at opposite ends to the sides of the push plate (1102) on both sides. Both torsion springs (1104) are sleeved on the pin (1101).

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