Transverse stabilizing device for longitudinal propulsion and U-shaped shield tunneling machine

Abstract

The utility model discloses a transverse stabilizing device for longitudinal propulsion and a U-shaped shield tunneling machine, and solves the problems that in the prior art, under the working condition that loads of soil bodies on the left side and the right side are asymmetric, transverse displacement and direction adjustment are difficult in the longitudinal propulsion process. The transverse stabilizing device for longitudinal propulsion comprises an up-down sliding mechanism, a transverse horizontal sliding mechanism and an elastic supporting mechanism, the transverse horizontal sliding mechanism is arranged on a moving part of the up-down sliding mechanism, and the elastic supporting mechanism is arranged on a moving part of the transverse horizontal sliding mechanism; the elastic supporting mechanism is supported on the ground or the ground connection auxiliary piece so as to provide transverse supporting. When the transverse stabilizing device for longitudinal propelling is used for a U-shaped shield, in U-shaped shield construction with asymmetric soil body loads on the left side and the right side, the transverse stabilizing device is fixed to the side of the U-shaped shield, continuous side supporting can be provided for the U-shaped shield in the operation process, the transverse displacement resisting capacity of a shield body is improved, and the equipment stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machines, in particular to a stabilizing device for stabilizing a U-shaped shield machine. Background Art

[0002] Currently, the scale of tunnel planning and construction in my country is increasing, and the construction conditions of integrated pipeline corridors are becoming increasingly complex. Southern my country has a large number of water-rich, soft-foundation geological structures. Integrated pipeline corridors are foundational projects for such cities / regions. They are also systematic projects closely related to municipal engineering and the daily production activities and lives of the general public, and are an indispensable core part of modern urban construction. As a mobile support equipment, the U-shaped shield machine, combined with prefabricated assembly technology, eliminates foundation pit support or slope support work, saving support costs. At the same time, it greatly improves the mechanization and automation of the open-cut construction method of integrated pipeline corridors, making them more economical, efficient, green, and environmentally friendly.

[0003] Some U-shaped shield machines used to construct tunnels face difficulties in lateral shield displacement and orientation adjustment under asymmetric soil load conditions with an open channel on one side and a soil mass on the other. Prior art auxiliary support assemblies, such as those described in the U-shaped shield machine and its construction method published in publication number CN 118008333 A, have a fixed structure, are inflexible to adjust, and have a limited scope of application. Therefore, it is necessary to design an adjustable U-shaped shield machine anti-lateral shield displacement system. Utility Model Content

[0004] In response to the deficiencies in the above-mentioned background technology, the present invention proposes a lateral stabilization device for longitudinal propulsion and a U-shaped shield machine, which solves the problem in the prior art of lateral displacement and difficulty in direction adjustment during longitudinal propulsion under asymmetric soil load conditions on the left and right sides.

[0005] The technical solution of the present utility model is achieved as follows: a lateral stabilization device for longitudinal propulsion includes an upper and lower sliding mechanism, a lateral horizontal sliding mechanism, and an elastic support mechanism. The lateral horizontal sliding mechanism is mounted on a movable member of the upper and lower sliding mechanism, and the elastic support mechanism is mounted on the movable member of the lateral horizontal sliding mechanism. The elastic support mechanism is supported on the ground or a ground-connecting auxiliary member to provide lateral support. The elastic support mechanism, under the action of the upper and lower sliding mechanism and the lateral horizontal sliding mechanism, can be adjusted in both vertical and lateral positions, providing more flexible construction methods.

[0006] Further preferably, the up and down sliding mechanism includes a vertical track, a vertical driving member and a lifting block. The lifting block is slidably set on the vertical track. Under the action of the vertical driving member, the lifting block can move up and down along the vertical track to form a moving member of the up and down sliding mechanism; the moving member drives the horizontal sliding mechanism to move up and down.

[0007] Further preferably, the vertical track includes two symmetrically arranged L-shaped rail plates, a base is provided on the back of the L-shaped rail plates, and the lifting block and the vertical drive member are located in the sliding cavity formed by the two L-shaped rail plates; it plays the role of positioning the lifting block and at the same time ensures the stability of the horizontal sliding mechanism.

[0008] Further preferably, the vertical driving member is a vertical oil cylinder, the fixed end of the vertical oil cylinder is connected to the connecting seat, the telescopic end of the vertical oil cylinder is hinged to the lifting block; a stroke sensor is provided in the vertical oil cylinder; the displacement of the oil cylinder can be monitored in real time.

[0009] Further preferably, the transverse horizontal sliding mechanism includes a transverse guide rail, a transverse driving member and a horizontal slide box. The horizontal slide box is slidably arranged on the transverse guide rail, and the horizontal slide box moves along the transverse guide rail under the action of the transverse driving member to form a moving member of the transverse horizontal sliding mechanism; the moving member drives the elastic support mechanism to move horizontally left and right, so that the elastic support mechanism can be accurately and stably supported on the ground or the ground auxiliary member.

[0010] Further preferably, the transverse guide rail includes a right horizontal track and a left horizontal track that are symmetrically arranged, the transverse drive member and the horizontal slide box are located between the right horizontal track and the left horizontal track, and the elastic support mechanism is connected to the horizontal slide box.

[0011] Further preferably, a pin hole plate is provided on the inner wall of the right horizontal track and the inner wall of the left horizontal track, and a plurality of pin holes arranged in a row are provided on the pin hole plate. The transverse driving member is a transverse oil cylinder, and a cylinder ear seat is provided on the cylinder body of the transverse oil cylinder, and the cylinder ear seat is connected to the pin hole plate through a pin shaft; a stroke sensor is provided in the transverse oil cylinder.

[0012] Further preferably, the elastic support mechanism includes a lower support seat, the lower support seat is connected to a ball joint base through a floating component, and the ball joint base is provided with a roller.

[0013] Further preferably, the floating assembly includes a cylinder seat obliquely arranged on the lower support seat, a guide column and a disc spring sleeved on the guide column are provided in the cylinder seat, a ball joint slide rod is connected to the ball joint base, the rod portion of the ball joint slide rod is slidably inserted into the cylinder seat and corresponds to the disc spring, and the ball portion of the ball joint slide rod is ball-jointed with the ball joint of the ball joint base.

[0014] A U-shaped shield machine includes the aforementioned lateral stabilizing device for longitudinal propulsion, wherein the lateral stabilizing device for longitudinal propulsion is arranged on the outer side wall of the U-shaped shield machine, and the ground connection auxiliary parts include sleepers, which are laid longitudinally in an open channel.

[0015] The beneficial effects of the present invention are as follows: the elastic support mechanism of the transverse stabilizing device for longitudinal propulsion of the present invention can be adjusted in vertical and transverse positions under the action of the upper and lower sliding mechanisms and the transverse horizontal sliding mechanisms, so that the elastic support mechanism can provide support at different heights and widths, making the construction method more flexible and more adaptable. By providing transverse support for longitudinal propulsion, the longitudinal propulsion equipment can overcome the transverse eccentric load and ensure its stable propulsion. When the transverse stabilizing device for longitudinal propulsion of the present invention is used for a U-shaped shield, in the construction of a U-shaped shield with asymmetric soil loads on the left and right sides, the transverse stabilizing device is fixed to the side of the U-shaped shield, and can provide continuous lateral support to the U-shaped shield during operation, thereby improving the shield's ability to resist lateral displacement, improving the stability of the equipment, and broadening the application range of the U-shaped shield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of the lateral stabilization device of the utility model;

[0018] Figure 2 This is a schematic diagram of the interior of the lateral horizontal sliding mechanism on the lateral stabilization device of the utility model.

[0019] Figure 3 It is a cross-sectional schematic diagram of the lateral horizontal sliding mechanism.

[0020] Figure 4 Schematic diagram of the elastic support mechanism supported inside the open channel.

[0021] Figure 5 It is a schematic diagram of the elastic support mechanism structure.

[0022] Figure 6 This is a schematic diagram of the lateral stabilization device used on a U-shaped shield machine.

[0023] Figure 7 This is a schematic diagram of the elastic support mechanism supported inside the open channel in Example 4.

[0024] Figure 8 This is a schematic diagram of the elastic support mechanism in Example 4 supported on the ground. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, in embodiment 1, a lateral stabilization device for longitudinal propulsion includes an up-and-down sliding mechanism 2, a lateral horizontal sliding mechanism 3, and an elastic support mechanism 4. The lateral horizontal sliding mechanism 3 is arranged on the moving part of the up-and-down sliding mechanism 2. The moving part of the up-and-down sliding mechanism 2 drives the lateral horizontal sliding mechanism to adjust the up-and-down position. The elastic support mechanism 4 is arranged on the moving part of the lateral horizontal sliding mechanism 3. The moving part of the lateral horizontal sliding mechanism 3 drives the elastic support mechanism to move horizontally left and right to adjust its horizontal position in the lateral direction. The elastic support mechanism 4 is supported on the ground or a ground auxiliary part to provide lateral support. Under the action of the up-and-down sliding mechanism and the lateral horizontal sliding mechanism, the elastic support mechanism can adjust the vertical and lateral position, so that the elastic support mechanism can provide support at different heights and widths, making the construction method more flexible and more adaptable. By providing lateral support for longitudinal propulsion, the problem of lateral displacement and difficulty in adjustment during longitudinal propulsion in the prior art under the condition of asymmetric soil loads on the left and right sides is solved.

[0027] like Figure 2 As shown, Example 2 is a lateral stabilizing device for longitudinal propulsion. Based on Example 1, the up-and-down sliding mechanism 2 described in this embodiment includes a vertical track 22, a vertical drive member 25, and a lifting block 23. The lifting block 23 is slidably mounted on the vertical track 22, which is fixed to the corresponding tunneling equipment. The lifting block 23 can move up and down along the vertical track 22 under the action of the vertical drive member 25, forming the moving member of the up-and-down sliding mechanism 2. The vertical drive member 25 can be an oil cylinder, an air cylinder, or a power-free screw structure to achieve the lifting and lowering of the lifting block.

[0028] As a preferred embodiment, the vertical track 22 described in this embodiment comprises two symmetrically arranged L-shaped rail plates. A base 21 is provided on the back of the L-shaped rail plates for connection to the tunneling equipment. A lifting block 23 and a vertical drive member 25 are located within a sliding cavity formed by the two L-shaped rail plates. The sliding cavity serves to limit the lifting block and ensure the stable lifting and lowering of the lateral horizontal sliding mechanism and the elastic support mechanism 4. Preferably, the vertical drive member 25 is a vertical cylinder. The fixed end of the vertical cylinder can be connected to the connecting seat 24 via a pin, and the telescopic end of the vertical cylinder is hinged to the lifting block 23 via a pin. To further improve the stability of the lifting block in driving the lateral horizontal sliding mechanism and the elastic support mechanism, two vertical cylinders can be provided. A stroke sensor is provided within the vertical cylinder to monitor cylinder displacement in real time, improving the accuracy of the lifting and lowering adjustment. During operation, the lifting block, driven by the vertical cylinder, can slide up and down along the vertical track, ensuring continuous support of the propulsion stabilization device as the height position of the support structure changes.

[0029] like Figure 3 As shown, Example 3 is a lateral stabilization device for longitudinal propulsion. Based on Example 1 or 2, the lateral horizontal sliding mechanism 3 in this embodiment includes a lateral guide rail, a lateral drive member 35, and a horizontal slide box 36. The horizontal slide box 36 is slidably mounted on the lateral guide rail and, under the action of the lateral drive member 35, moves along the lateral guide rail, constituting the moving member of the lateral horizontal sliding mechanism 3. The lateral drive member 35 can be an oil cylinder, an air cylinder, or an unpowered screw structure to achieve left and right sliding of the elastic support mechanism 4.

[0030] In this preferred embodiment, the transverse guide rails comprise symmetrically arranged right and left horizontal rails 31, 32. These rails are bolted to the lifting block 23, enabling them to slide up and down with the lifting block 23. A transverse drive 35 and a horizontal slide box 36 are located between the right and left horizontal rails 31, 32. The elastic support mechanism 4 is connected to the horizontal slide box 36. Driven by the transverse drive 35, the horizontal slide box 36 can slide horizontally along the right and left horizontal rails 31, 32.

[0031] To further achieve adjustable position of the transverse drive member, a pinhole plate 37 is provided on the inner walls of both the right horizontal track 31 and the left horizontal track 32. This plate 37 is equipped with a plurality of pinholes arranged in a row. The pinholes are arranged along the length of the plate, aligning with the length of the transverse guide rail, i.e., arranged transversely. The transverse drive member 35 is preferably a transverse oil cylinder. The cylinder body of the transverse oil cylinder is provided with a cylinder lug 34, which is connected to the pinhole plate 37 via a pin 33. The pin 34 engages with pinholes at different positions to adjust the transverse position of the transverse drive member 35. Specifically, the cylinder lug 34 is connected to the pinholes at the bottom of the horizontal track via two pins 33, facilitating horizontal position adjustment. A stroke sensor is provided within the transverse oil cylinder to monitor the cylinder's displacement in real time.

[0032] When the existing open channel has a large deviation in the left and right directions, the horizontal slide box 36 can be self-adjusted under the action of the transverse cylinder; first, the transverse cylinder extends to push the horizontal slide box 36 forward. After reaching the predetermined position, the pin shaft 33 is pulled out, and the transverse cylinder pulls back the horizontal cylinder ear seat 34 and moves it forward a distance. Then, the pin shaft 33 is inserted into the horizontal cylinder ear seat 34 and the left and right horizontal track pin holes to complete a horizontal displacement adjustment.

[0033] In this embodiment, as a preferred solution, Figure 4 、 5 As shown, the elastic support mechanism 4 includes a lower support seat 41, which is connected to a ball-jointed base 45 via a floating assembly. The ball-jointed base 45 is provided with a roller 46. Under the action of the floating assembly and the ball-jointed base 45, the roller 46 can always be in close contact with the ground or the ground-connecting auxiliary component to provide stable lateral support. Specifically, the floating assembly includes a cylindrical seat 47 tilted on the lower support seat 41. The cylindrical seat 47 contains a guide post 43 and a disc spring 42 mounted on the guide post 43. The disc spring 42 can be compressed along the guide post 43. The ball-jointed base 45 is connected to a ball-jointed slide 44. The rod portion of the ball-jointed slide 44 slides into the cylindrical seat 47 and corresponds to the disc spring 42. The upper end of the ball-jointed slide 44 is pressed against the disc spring 42 and can slide upward toward the center of the cylindrical seat 47. The ball portion of the ball-jointed slide 44 engages with the ball-jointed base 45, enabling flexible adjustment of the roller 46. Disc springs 42 and ball joints enable roller trolley 46 to follow the surface of sleeper 5 in a slightly contoured manner, providing elastic support. It should be noted that disc springs can also be implemented with other elastic components, such as springs or rubber rings; and hydraulic cylinders or other components can also be used to support roller 46 as needed. As the equipment moves forward, the lower rollers roll along the ground or auxiliary ground connections. Regardless of the undulating support surface, the combined action of disc springs 42, ball joint slide 44, and ball joint base 45 ensures that roller 46 remains firmly in contact with the support surface.

[0034] Example 4: A U-shaped shield machine, such as Figure 6As shown, it includes the longitudinal propulsion lateral stabilization device described in embodiment 2 or 3, and the longitudinal propulsion lateral stabilization device is arranged on the outer side wall of the U-shaped shield machine 1 facing the open channel. Figure 7 As shown, one side is soil 6 and the other side is the existing open channel 7, and the soil loads on both sides of the U-shaped shield machine are asymmetric. At this time, the ground connection auxiliary parts include sleepers 5, and the sleepers 5 are laid longitudinally in the open channel 7. The sleepers 5 are angular brackets, and the rollers are attached to their inclined surfaces, providing lateral support for the U-shaped shield machine with the help of the open channel. The sleepers 5 are placed at the bottom of one side of the open channel 7 to increase the contact area of ​​the roller trolley 46 to prevent the existing open channel 7 structure from being crushed. The sleepers 5 can be provided with multiple sections to meet the required distance for the equipment to travel in one day, and the sleepers 5 are connected by bolts. The stable support device provides continuous support for the U-shaped shield machine, and can also be tightened after each ring is advanced, providing only a static tightening mode. The elastic support mechanism of the stable support device is supported in the open channel 7, and the stable support system can also be directly supported on the ground and other structures, such as Figure 8 shown.

[0035] Operation method of the lateral stabilization device for longitudinal propulsion on the U-shaped shield machine:

[0036] Step 1: Use a crane to place the sleeper 5 at the bottom of one side of the open channel 7 along the forward direction of the U-shaped shield machine.

[0037] Step 2: Adjust the position of the transverse cylinder so that the roller is located above the sleeper 5, that is, close to the inclined surface of the sleeper 5.

[0038] Step 3: Adjust the vertical cylinder to press the roller against the sleeper, observe the cylinder pressure, and when the cylinder overflows to a certain pressure, the roller trolley begins to provide support.

[0039] Step 4: The U-shaped shield machine moves forward and the rollers move forward synchronously to provide continuous support force.

[0040] Step 5: After the rollers advance a certain distance, the sleepers 5 are laid forward in a circular motion in the forward direction under the action of the crane. In U-shield construction where the soil load on the left and right sides is asymmetrical, this can provide continuous lateral support for the U-shield machine, improve the shield's ability to resist lateral displacement, and enhance the equipment's stability.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lateral stabilizing device for longitudinal propulsion, characterized in that: The invention comprises an up-and-down sliding mechanism (2), a transverse horizontal sliding mechanism (3) and an elastic support mechanism (4), wherein the transverse horizontal sliding mechanism (3) is arranged on a moving part of the up-and-down sliding mechanism (2), and the elastic support mechanism (4) is arranged on a moving part of the transverse horizontal sliding mechanism (3); the elastic support mechanism (4) is supported on the ground or a ground auxiliary member to provide transverse support.

2. The lateral stabilizer for longitudinal propulsion according to claim 1, characterized in that: The up-and-down sliding mechanism (2) comprises a vertical track (22), a vertical driving member (25) and a lifting block (23). The lifting block (23) is slidably arranged on the vertical track (22). The lifting block (23) can move up and down along the vertical track (22) under the action of the vertical driving member (25) to constitute a moving member of the up-and-down sliding mechanism (2).

3. The lateral stabilizer for longitudinal propulsion according to claim 2, characterized in that: The vertical track (22) comprises two symmetrically arranged L-shaped rail plates, a base (21) being provided on the back of the L-shaped rail plates, and a lifting block (23) and a vertical driving member (25) being located in a sliding cavity formed by the two L-shaped rail plates.

4. The lateral stabilizer for longitudinal propulsion according to claim 3, characterized in that: The vertical driving member (25) is a vertical oil cylinder, the fixed end of which is connected to a connecting seat (24), and the telescopic end of which is hinged to a lifting block (23); a stroke sensor is provided in the vertical oil cylinder.

5. The lateral stabilizer for longitudinal propulsion according to any one of claims 1 to 4, characterized in that: The transverse horizontal sliding mechanism (3) comprises a transverse guide rail, a transverse driving member (35) and a horizontal sliding box (36). The horizontal sliding box (36) is slidingly arranged on the transverse guide rail, and the horizontal sliding box (36) moves along the transverse guide rail under the action of the transverse driving member (35) to form a moving member of the transverse horizontal sliding mechanism (3).

6. The lateral stabilizer for longitudinal propulsion according to claim 5, characterized in that: The transverse guide rail comprises a right horizontal rail (31) and a left horizontal rail (32) which are symmetrically arranged. The transverse driving member (35) and the horizontal sliding box (36) are located between the right horizontal rail (31) and the left horizontal rail (32). The elastic support mechanism (4) is connected to the horizontal sliding box (36).

7. The lateral stabilizer for longitudinal propulsion according to claim 6, characterized in that: A pin hole plate (37) is provided on the inner wall of the right horizontal track (31) and the inner wall of the left horizontal track (32). The pin hole plate (37) is provided with a plurality of pin holes arranged in a row. The transverse driving member (35) is a transverse oil cylinder. A cylinder lug (34) is provided on the cylinder body of the transverse oil cylinder. The cylinder lug (34) is connected to the pin hole plate (37) through a pin shaft (33). A stroke sensor is provided in the transverse oil cylinder.

8. The lateral stabilizer for longitudinal propulsion according to claim 1, 4 or 7, characterized in that: The elastic support mechanism (4) comprises a lower support seat (41), the lower support seat (41) is connected to a ball hinge base (45) via a floating assembly, and a roller (46) is provided on the ball hinge base (45).

9. The lateral stabilizer for longitudinal propulsion according to claim 8, characterized in that: The floating assembly includes a cylinder seat (47) obliquely arranged on the lower support seat (41), a guide column (43) and a disc spring (42) sleeved on the guide column (43) are provided in the cylinder seat (47), a ball hinge slide (44) is connected to the ball hinge base (45), the rod portion of the ball hinge slide (44) is slidably inserted into the cylinder seat (47) and corresponds to the disc spring (42), and the ball portion of the ball hinge slide (44) is ball-jointed with the ball hinge base (45).

10. A U-shaped shield machine, characterized in that: It comprises a lateral stabilizing device for longitudinal propulsion as described in any one of claims 1 to 9, wherein the lateral stabilizing device for longitudinal propulsion is arranged on the outer side wall of the U-shaped shield machine, and the ground connection auxiliary parts include sleepers (5), and the sleepers (5) are laid longitudinally in the open channel (7).

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