Metro shield tunnel freezing hole punching device

Abstract

The utility model relates to a subway shield tunnel freezing hole punching device which comprises a longitudinally-arranged lifting assembly, the lifting assembly can transversely move in a positioning mode along a supporting frame arranged at the bottom of the lifting assembly, and the lifting assembly is detachably connected with a puncher used for punching freezing holes in the longitudinal direction in a transmission mode. The lifting assembly transversely moves in a positioning mode along the supporting frame, so that the position of the puncher can be flexibly adjusted in the direction of the supporting frame, the punching requirements of different intervals are met, meanwhile, the height of the puncher on the lifting assembly can be adaptively adjusted according to the punching condition, accurate control over the punching depth is achieved, and the punching efficiency is improved. The construction difficulty and cost caused by height errors are reduced, the construction flexibility is improved, the construction device can easily deal with freezing hole construction tasks at different positions in a tunnel, the equipment position does not need to be frequently replaced, the operation efficiency is improved, rapid adjustment can be achieved under different working conditions, the construction requirements under complex geological conditions are met, and the construction cost is reduced. The construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of freezing hole injection, in particular to a freezing hole injection device for a subway shield tunnel. Background Art

[0002] With the continuous development and utilization of urban underground space, subway shield tunnel construction has become an important engineering technology. However, tunnel construction in water-rich strata often faces risks such as groundwater leakage and stratum instability. In order to ensure construction safety and the stability of tunnel structure, freezing construction technology came into being. The freezing method arranges freezing holes around the tunnel excavation section and circulates low-temperature brine to freeze the water-bearing strata near the freezing holes, forming a high-strength, water-sealing frozen soil curtain, thereby isolating groundwater, improving stratum strength, and providing safety for tunnel construction.

[0003] The freezing hole injection device is a mechanical equipment specially used to drill freezing holes in a predetermined position and direction to provide a channel for subsequent freezing construction. The existing freezing hole injection devices are often bulky and heavy, and require special transportation tools and lifting equipment during transportation and installation, which increases the complexity and cost of construction. They are also unable to adapt to areas with limited space such as subway shield tunnels, and are difficult to move and operate flexibly. Handheld injection devices cannot guarantee stability during drilling, which affects the accuracy and efficiency of freezing hole injection. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a freezing hole punching device for a subway shield tunnel, the punching device comprising a longitudinally arranged lifting component, the lifting component can be laterally positioned and moved along a support frame arranged at the bottom thereof, and a puncher for longitudinally punching freezing holes is detachably connected to the lifting component.

[0005] As a preferred technical solution of the utility model, the top surface of the support frame is horizontally provided with two slide grooves with inverted 'T'-shaped longitudinal sections, and two bolts are slidably fitted in the two slide grooves respectively, and the top of the bolt is higher than the top of the slide groove and is screwed to the bottom of the lifting assembly; the top surface of the support frame is provided with a rectangular injection groove vertically penetrating along the center line.

[0006] As a preferred technical solution of the utility model, the lifting assembly includes a square base plate which is detachably screwed to the four bolts, and the base plate can be positioned and moved laterally along the slide groove; a vertical rod is vertically arranged in the middle of the top surface of the base plate, a rack rod is attached to the outer side of the vertical rod, a slider is connected to the outer gap between the vertical rod and the rack rod, and the slider is meshed with the rack rod through a lifting wheel vertically passed through its outer surface; the outer surface of the slider is detachably connected to the puncher.

[0007] As a preferred technical solution of the utility model, a positioning rod is vertically screwed on the other outer facade of the sliding block, and the end of the positioning rod passes through the sliding block and abuts against the corresponding side surface of the vertical rod.

[0008] As a preferred technical solution of the utility model, stabilizing components that can be extended or retracted are arranged on both sides of the support frame; the stabilizing components include side grooves horizontally opened between the two end surfaces of the support frame, and folding plates are hingedly arranged at both ends of the two side grooves, and fixing holes are penetrated by the free ends of the four folding plates.

[0009] The beneficial effects of the utility model are:

[0010] The lifting assembly of the utility model can be positioned and moved along the support frame in the transverse direction, so that the puncher can be flexibly adjusted in the direction of the support frame to meet the needs of punching holes with different spacings. At the same time, the height of the puncher on the lifting assembly can be adjusted according to the punching situation, thereby realizing accurate control of the punching depth, reducing the construction difficulty and cost caused by height error, and increasing the flexibility of construction, so that the punching device can easily cope with the freezing hole punching tasks at different positions in the tunnel, without the need to frequently change the equipment position, thereby improving the working efficiency, and being able to quickly adjust under different working conditions to meet the construction requirements under complex geological conditions; the support frame and the lifting assembly together provide stable support for the puncher, effectively resist various external forces and vibrations during the punching process, and ensure the accuracy and safety of the punching; and the detachable setting of the puncher is convenient for quick replacement and maintenance, which not only improves the versatility and adaptability of the equipment, but also enables quick response when the puncher fails or needs to operate for different hole diameters and hole depths, thereby reducing downtime and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The schematic diagram of the overall structure of the injection device of the utility model is shown (I);

[0012] Figure 2 A schematic diagram (I) showing the unfolded state of the stabilizing component in the injecting device of the utility model;

[0013] Figure 3 A schematic diagram (II) showing the unfolded state of the stabilizing component in the injecting device of the utility model;

[0014] Figure 4 The second diagram shows the overall structure of the injecting device of the present invention.

[0015] As shown in the figure: 1. Support frame; 11. Injection groove; 12. Slide groove; 2. Lifting assembly; 21. Bottom plate; 22. Rack rod; 23. Vertical rod; 24. Slider; 25. Lifting wheel; 26. Positioning rod; 3. Punch; 4. Stabilizing assembly; 41. Side receiving groove; 42. Folding plate; 43. Fixing hole. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0017] Embodiment 1

[0018] In order to solve the technical problems in the background technology, a freezing hole injection device for a subway shield tunnel is provided as follows:

[0019] Combination Figure 1 to Figure 4 As shown, a freezing hole injection device for a subway shield tunnel comprises a longitudinally arranged lifting assembly 2, the lifting assembly 2 can be laterally positioned and moved along a support frame 1 arranged at the bottom thereof, and a puncher 3 for longitudinally injecting freezing holes is detachably connected to the lifting assembly 2.

[0020] By adopting the above technical scheme, the lifting assembly 2 can be positioned and moved laterally along the support frame 1, so that the puncher 3 can be flexibly adjusted in the direction of the support frame 1 to meet the needs of punching holes with different spacings. At the same time, the height of the puncher 3 on the lifting assembly 2 can be adjusted according to the punching situation, so as to achieve precise control of the punching depth, reduce the construction difficulty and cost caused by height error, increase the flexibility of construction, and enable the punching device to easily cope with the freezing hole punching tasks at different positions in the tunnel, without the need to frequently change the position of the equipment, improve the working efficiency, and can be quickly adjusted under different working conditions to meet the construction requirements under complex geological conditions; the support frame 1 and the lifting assembly 2 jointly provide stable support for the puncher 3, effectively resist various external forces and vibrations during the punching process, ensure the accuracy and safety of the punching, and the detachable setting of the puncher 3 facilitates rapid replacement and maintenance, which not only improves the versatility and adaptability of the equipment, but also enables rapid response when the puncher 3 fails or needs to operate for different hole diameters and hole depths, thereby reducing downtime and improving construction efficiency.

[0021] Embodiment 2

[0022] Combination Figure 1 to Figure 4 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0023] Combination Figure 1 to Figure 4As shown, in this embodiment, the support frame 1 is provided with a stabilizing component 4 that can be extended or retracted; the stabilizing component 4 includes side receiving grooves 41 horizontally opened between the two end surfaces of the support frame 1, and the two ends of the two side receiving grooves 41 are respectively hinged with folding plates 42, and the free ends of the four folding plates 42 are penetrated by fixing holes 43.

[0024] By adopting the above technical solution, the folding plate 42 of the stabilizing component 4 is matched with the side receiving groove 41, so that the folding plate 42 can be stored in the side receiving groove 41 when not in use, which greatly reduces the overall volume of the device and is convenient for moving and storing in a narrow tunnel space. When the device needs to be stabilized, the folding plate 42 can provide additional support area, increase the contact area between the support frame 1 and the ground or other fixed objects, help to disperse the load, improve the bearing capacity and stability of the support frame 1, and resist the vibration and impact force generated during the punching process to ensure the smooth progress of the punching operation; the fixing hole 43 at the free end of the folding plate 42 can be connected to the ground or other fixed structures (such as using bolts, suction cups, anchors, etc.), adapt to different working grounds, enhance the stability and safety of the device, and enable the punching device to reach a stable support state in a short time, providing a reliable foundation for the punching operation; the fixing hole 43 on the folding plate 42 is not only used to connect to the ground, but also can be connected to other auxiliary equipment or structures (such as beams, diagonal braces, etc.) according to specific needs, so as to further enhance the stability and bearing capacity of the device, so that the device can adapt to more diverse construction needs.

[0025] Combination Figure 1 to Figure 4 As shown, the top surface of the support frame 1 is horizontally provided with two inverted 'T'-shaped slide grooves 12 with longitudinal sections, and two bolts are slidably arranged in the two slide grooves 12 respectively, and the top of the bolt is higher than the top of the slide groove 12 and is screwed to the bottom of the lifting component 2; the top surface of the support frame 1 is vertically penetrated by a rectangular injection groove 11 along the center line.

[0026] By adopting the above-mentioned technical scheme, the slide groove 12 on the support frame 1 cooperates with the bolt, so that the bolt can be flexibly adjusted and fixed in the slide groove 12, and the position of the lifting component 2 on the support frame 1 can be adjusted as needed to meet different punching requirements, and the sliding cooperation setting of the bolt and the slide groove 12 is not only convenient for adjusting the position, but also can provide stable supporting force after fixation, thereby ensuring the stability of the injection device and reducing the safety hazards caused by looseness or dislocation; the rectangular injection groove 11 is vertically penetrated along the center line of the top surface of the support frame 1, and the drilling hole of the injection device provides space and trajectory. When it is necessary to continuously inject multiple freezing holes in the horizontal direction, there is no need to move the equipment as a whole, and only the lifting component 2 needs to be moved, and the operation is simple and quick.

[0027] Embodiment 3

[0028] Combination Figure 1 to Figure 4 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0029] Combination Figure 1 to Figure 4 As shown, in this embodiment, the lifting assembly 2 includes a square bottom plate 21 which is detachably screwed to the four bolts, and the bottom plate 21 can be laterally positioned and moved along the slide groove 13; a vertical rod 23 is vertically provided in the middle of the top surface of the bottom plate 21, a rack rod 22 is attached to the outer side surface of the vertical rod 23, a slider 24 is transmission-sleeved between the vertical rod 23 and the rack rod 22, and the slider 24 is transmission-engaged with the rack rod 22 via a lifting wheel 25 vertically passed through its outer surface; the outer surface of the slider 24 is detachably connected to the puncher 3.

[0030] By adopting the above technical solution, the square bottom plate 21 is detachably screwed with the four bolts on the support frame 1, which not only ensures the stable connection between the bottom plate 21 and the support frame 1, but also enables the bottom plate 21 to be laterally positioned and moved along the slide groove 12, so as to facilitate the lifting component 2 to perform precise horizontal position adjustment on the support frame 1 according to actual needs, so as to meet the positioning requirements of the puncher 3 in different working scenarios, and enhance the flexibility and adaptability of the overall structure; the rack rod 22 attached to the outer side of the vertical rod 23 is connected with the lifting wheel 25 inside the slider 24 by transmission meshing, forming a stable lifting transmission mechanism. When the lifting wheel 25 rotates, it will drive the slider 24 to slide up and down along the outer side of the vertical rod 23 and the rack rod 22, thereby realizing the lifting action of the puncher 3, ensuring the stability and accuracy of the lifting process, and avoiding jitter or deviation caused by mechanical friction or poor transmission.

[0031] Combination Figure 1 to Figure 4 As shown, a positioning rod 26 is vertically screwed to the other outer surface of the sliding block 24 , and the end of the positioning rod 26 passes through the sliding block 24 and abuts against the corresponding side surface of the vertical rod 23 .

[0032] By adopting the above technical scheme, in the process of the slider 24 being lifted and lowered along the vertical rod 23 and the rack rod 22, when the puncher 3 is lifted and lowered to a suitable height, the positioning rod 26 abuts against the vertical rod 23 to fix the puncher 3 at a suitable height, and there is no need to hold the lifting wheel 25 for positioning. Even in extreme cases (such as sudden power failure, mechanical failure, etc.), the positioning rod 26 can provide additional resistance, so that the slider 24 is not easy to fall off the vertical rod 23, thereby ensuring the safety and reliability of the equipment; and the screw connection between the positioning rod 26 and the slider 24 makes the entire structure relatively simple and easy to maintain. When the slider 24 needs to be replaced or repaired, it is only necessary to loosen the fixing screws of the positioning rod 26 to remove the slider 24 from the vertical rod 23, without the need to disassemble other complex components, thereby reducing maintenance costs and time, and improving the maintainability and service life of the equipment.

[0033] The working principle and use process of this utility model:

[0034] First, move the punching device to the position where the punching operation is required, rotate and unfold the four folding plates 42 to the appropriate position according to the conditions of the construction site, and then select appropriate fasteners (such as bolts, pins, suction cups) according to the ground conditions to cooperate with the fixing holes at the ends of the folding plates 42 to stabilize the support frame 1, loosen the bolts, horizontally position and adjust the lifting assembly 2 to the appropriate position on the support frame 1, and then loosen the positioning rod 26. The operator rotates the lifting wheel 25 to make the hydraulic puncher 3 contact the bottom surface, and starts the hydraulic puncher 3 to drill. After completing the freezing hole drilling, move the lifting assembly 2 along the support frame 1 to the next position for drilling. After the construction is completed, the hydraulic puncher 3 is lifted off the ground by rotating the lifting wheel 25, and the hydraulic puncher 3 is screwed and fixed to the appropriate position through the positioning rod 26, and the folding plate 42 is folded into the side receiving groove 41, and it can be transferred to the next construction site.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A freezing hole injection device for a subway shield tunnel, characterized in that: The injection device comprises a longitudinally arranged lifting component (2), the lifting component (2) being capable of being laterally positioned and moved along a support frame (1) arranged at the bottom thereof, and a puncher (3) for injecting freezing holes longitudinally is detachably connected to the lifting component (2).

2. A freezing hole injection device for a subway shield tunnel according to claim 1, characterized in that: The top surface of the support frame (1) is horizontally provided with two slide grooves (12) with an inverted 'T'-shaped longitudinal section, and two bolts are respectively slidably arranged in the two slide grooves (12), and the top of the bolt is higher than the top of the slide groove (12) and is screwed to the bottom of the lifting component (2); the top surface of the support frame (1) is vertically penetrated by a rectangular injection groove (11) along the center line.

3. A freezing hole injection device for a subway shield tunnel according to claim 2, characterized in that: The lifting assembly (2) comprises a square bottom plate (21) which is detachably screwed to the four bolts, and the bottom plate (21) can be positioned and moved laterally along the slide groove (12); a vertical rod (23) is vertically provided in the middle of the top surface of the bottom plate (21); a rack rod (22) is attached to the outer side surface of the vertical rod (23); a slider (24) is connected to the outer clearance between the vertical rod (23) and the rack rod (22); the slider (24) is connected to the rack rod (22) in a transmission meshing manner through a lifting wheel (25) vertically connected on its outer surface; the outer surface of the slider (24) is detachably connected to the puncher (3).

4. A freezing hole injection device for a subway shield tunnel according to claim 3, characterized in that: A positioning rod (26) is vertically screwed to the other outer surface of the sliding block (24), and the end of the positioning rod (26) passes through the sliding block (24) and abuts against the corresponding side surface of the vertical rod (23).

5. The freezing hole injection device for a subway shield tunnel according to claim 1, characterized in that: Both sides of the support frame (1) are provided with stabilizing components (4) that can be extended or retracted; the stabilizing components (4) include side receiving grooves (41) that are horizontally arranged between the two end surfaces of the support frame (1), and the two ends of the two side receiving grooves (41) are respectively hingedly provided with folding plates (42), and the free ends of the four folding plates (42) are all penetrated by fixing holes (43).

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