Articulated hydraulic support mechanism for hydraulic support trolley of overlapping shield tunnel

Abstract

This invention relates to an articulated hydraulic support structure for a hydraulic support trolley used in overlapping shield tunnels. It includes a longitudinal beam of the hydraulic support trolley, connecting bolts, an outer sleeve of the hydraulic support trolley, connecting pins between the hydraulic cylinder and the longitudinal beam, the hydraulic cylinder itself, and a support wheel system. The upper part of the longitudinal beam of the hydraulic support trolley has a U-shaped structure, and the support wheel system is supported inside the outer sleeve of the hydraulic support trolley. The support wheel system and the outer sleeve of the hydraulic support trolley adopt an inner and outer sliding sleeve structure. This invention features a lightweight structure and convenient operation. It changes the contact structure between the tunnel support trolley and the tunnel segments from a rigid contact to a flexible structure, adjusting the posture of the support structure according to changes in the cross-section of the tunnel segments. This improves the applicability and construction efficiency of overlapping tunnel support structures, allows for reuse, reduces production costs, and has excellent market prospects and development potential compared to existing technologies.

Description

Technical Field

[0001] This invention relates to the technical field of hydraulic support trolley equipment for overlapping shield tunnels, specifically to an articulated hydraulic support structure for hydraulic support trolleys used in overlapping shield tunnels. Background Technology

[0002] With the increasing scale of urbanization and the growing congestion caused by rising population flow, more and more large and medium-sized cities are constructing underground rail transit systems. Inevitably, multiple subway lines pass through the same station during underground transportation construction. To navigate confined spaces, the use of overlapping tunnels is becoming increasingly common. During tunnel excavation, construction machinery causes severe disturbance to the surrounding soil, and overlapping tunnels have significant mutual influence. Improper control during construction can easily lead to safety accidents and substantial economic losses.

[0003] Existing hydraulic support trolleys for overlapping shield tunnels mainly suffer from the following problems: They largely employ mechanical rigid support structures, which cannot automatically adjust to working conditions when there is misalignment in the assembled tunnel segments. Operators often need to monitor the trolley's operation in real time, and any negligence can easily lead to safety hazards, potentially even cracking or damaging the segments and causing operational safety risks later. Furthermore, the mechanical rigid support structure is prone to damaging the tunnel segments during support, leaving indentations that require later repair, increasing the labor intensity of workers and reducing construction efficiency.

[0004] Designing a cleverly designed, lightweight, and easy-to-operate articulated hydraulic support structure for overlapping shield tunnel hydraulic support trolleys, featuring rubber-wrapped support wheels, transforms the rigid-to-flexible contact between the tunnel support trolley and tunnel segments into a flexible structure, adjusting the support structure's posture according to changes in the tunnel segment cross-section, eliminating the risk of concrete segment damage, offering flexible and diverse usage, lightweight construction, and eliminating the need for mid-construction adjustments under normal construction monitoring conditions, thus improving the applicability and construction efficiency of overlapping tunnel support structures, and allowing for reuse and reduced production costs, is a problem that needs to be solved. Summary of the Invention

[0005] To address the following issues with existing hydraulic support trolleys for overlapping shield tunnels: They primarily employ rigid mechanical support structures, which cannot automatically adjust to work conditions when there are misalignments in the assembled tunnel segments. Operators often need to monitor the trolley's operation in real time, and negligence can easily lead to safety hazards, even cracking or damaging the segments and causing operational safety risks later. Furthermore, rigid mechanical support structures are prone to damaging segments during support, leaving indentations that require later repair, increasing worker workload and reducing construction efficiency. This invention provides an articulated hydraulic support structure for hydraulic support trolleys in overlapping shield tunnels. This ingenious design results in a lightweight structure that is easy to operate. It changes the contact structure between the tunnel support trolley and the tunnel segments from rigid to flexible, adjusting the support structure's posture according to changes in the tunnel segment cross-section, eliminating the risk of concrete segment damage. It offers flexible and diverse usage, is lightweight, and requires no mid-construction adjustments under normal monitoring conditions. This improves the applicability and construction efficiency of overlapping tunnel support structures, and allows for reuse, reducing production costs.

[0006] The technical solution adopted by this invention to solve the above-mentioned technical problems is: an articulated hydraulic support structure for a hydraulic support trolley in overlapping shield tunnels, comprising a hydraulic support trolley longitudinal beam, connecting bolts, a hydraulic support trolley outer sleeve, a hydraulic cylinder and longitudinal beam connecting pin, a hydraulic cylinder, and multiple support wheel systems; the upper part of the hydraulic support trolley longitudinal beam has a U-shaped structure, the bottom of the hydraulic support trolley outer sleeve is fixed to the U-shaped structure of the hydraulic support trolley longitudinal beam by connecting bolts, the support wheel systems are supported inside the hydraulic support trolley outer sleeve, the support wheel systems and the hydraulic support trolley outer sleeve adopt an inner and outer sliding sleeve structure, and the base of the support wheel system is fixed to the extended end of the hydraulic cylinder by welding. The hydraulic cylinders extend and retract to drive the support wheel system to move up and down. The bottom of the hydraulic support structure is fixedly connected to the trolley gantry via the hydraulic support trolley longitudinal beam and connecting bolts. The support wheel system includes a support wheel, a clamping plate, a support sleeve, a support wheel frame, a wheel frame pin, a bearing, a bearing baffle, and a stepped shaft. The support wheel frame has U-shaped openings facing upwards on both sides. The stepped shaft is clamped in the U-shaped openings and fixed by the clamping plate and bolts. The bearing baffle is located outside the bearing, and the edge of the bearing baffle is fixed to the support wheel by bolts. A horizontal pin hole is provided at the joint between the support sleeve and the support wheel frame. The wheel frame pin is inserted into the horizontal pin hole to hinge the support sleeve and the support wheel frame together.

[0007] Each support wheel system includes two support wheels, which are connected to the support wheel frame via a stepped axle.

[0008] The support wheel is covered with a rubber sleeve.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1) This invention includes a hydraulic support trolley longitudinal beam, connecting bolts, a hydraulic support trolley outer sleeve, a hydraulic cylinder and longitudinal beam connecting pin, a hydraulic cylinder, and multiple support wheel systems; the upper part of the hydraulic support trolley longitudinal beam has a U-shaped structure, the bottom of the hydraulic support trolley outer sleeve is fixed to the U-shaped structure of the hydraulic support trolley longitudinal beam by connecting bolts, the support wheel system is supported inside the hydraulic support trolley outer sleeve, the support wheel system and the hydraulic support trolley outer sleeve adopt an inner and outer sliding sleeve structure, the base of the support wheel system is fixed to the extended end of the hydraulic cylinder by welding, the hydraulic cylinder extends and retracts to drive the support wheel system to move up and down, the bottom of the hydraulic support structure is fixedly connected to the trolley gantry by the hydraulic support trolley longitudinal beam and connecting bolts. This invention, through innovative design, adopts a hinged hydraulic support structure and wraps rubber on the outside of the support wheels, changing the contact structure between the tunnel support trolley and the tunnel segment from a rigid contact to a flexible structure, and can adjust the posture of the support structure according to the changes in the cross-section of the tunnel segment. It solves the problem of low support efficiency caused by frequent changes in the support conditions of overlapping tunnels with misaligned tunnel segments, and eliminates the risk of damage to concrete segments;

[0011] 2) The support wheel system includes a support wheel, a clamping plate, a support sleeve, a support wheel frame, a wheel frame pin, a bearing, a bearing baffle, and a stepped shaft. The support wheel frame has U-shaped openings with upward openings on both the left and right sides. The stepped shaft is clamped in the U-shaped openings and fixed by the clamping plate and bolts. The bearing baffle is set outside the bearing, and the edge of the bearing baffle is fixed to the support wheel by bolts. A horizontal pin hole is provided at the joint between the support sleeve and the support wheel frame. The wheel frame pin is inserted into the horizontal pin hole to hinge the support sleeve and the support wheel frame together. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the hydraulic support trolley;

[0013] Figure 2 This is a front view schematic diagram of the articulated hydraulic support structure for the hydraulic support platform vehicle of the present invention;

[0014] Figure 3 This is a side view schematic diagram of the articulated hydraulic support structure for the hydraulic support platform vehicle of the present invention;

[0015] Figure 4 This is a top view schematic diagram of the articulated hydraulic support structure for the hydraulic support platform vehicle of the present invention;

[0016] Figure 5 This is a schematic diagram of the main cross-sectional structure of the support wheel system of the present invention;

[0017] Figure 6 This is a side view schematic diagram of the support wheel system of the present invention;

[0018] Figure 7This is a schematic diagram of the horizontal travel working condition of the present invention;

[0019] Figure 8 This is a schematic diagram of the uphill travel condition of the present invention;

[0020] Figure 9 This is a schematic diagram of the downhill travel condition of the present invention;

[0021] The markings in the diagram are: 1. Longitudinal beam of the hydraulic support trolley; 2. Connecting bolt; 3. Outer sleeve of the hydraulic support trolley; 4. Connecting pin between the hydraulic cylinder and the longitudinal beam; 5. Hydraulic cylinder; 6. Support wheel system; 601. Support wheel; 602. Clamping plate; 603. Support sleeve; 604. Support wheel frame; 605. Wheel frame pin; 606. Bearing; 607. Bearing baffle; 608. Stepped shaft; 609. U-shaped opening; 7. Trolley gantry. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] As shown in the figure, the articulated hydraulic support structure for the hydraulic support trolley of the overlapping shield tunnel includes a hydraulic support trolley longitudinal beam 1, connecting bolts 2, a hydraulic support trolley outer sleeve 3, a hydraulic cylinder and longitudinal beam connecting pin 4, a hydraulic cylinder 5, and multiple support wheel systems 6. The upper part of the hydraulic support trolley longitudinal beam 1 has a U-shaped structure. The bottom of the hydraulic support trolley outer sleeve 3 is fixed to the U-shaped structure of the hydraulic support trolley longitudinal beam 1 by connecting bolts 2. The support wheel systems 6 are supported inside the hydraulic support trolley outer sleeve 3. The support wheel systems 6 and the hydraulic support trolley outer sleeve 3 adopt an inner and outer sliding sleeve structure. The base of the support wheel system 6 is fixed to the extended end of the hydraulic cylinder 5 by welding. The extension and retraction of the hydraulic cylinder 5 pushes the support wheel system 6 to move up and down. The bottom of the hydraulic support structure is connected by hydraulic... The longitudinal beam 1 of the support trolley and the connecting bolts 2 are fixedly connected to the trolley gantry 7; the support wheel system 6 includes a support wheel 601, a clamping plate 602, a support sleeve 603, a support wheel frame 604, a wheel frame pin 605, a bearing 606, a bearing baffle 607, and a stepped shaft 608. The support wheel frame 604 has U-shaped openings 609 with upward openings on both the left and right sides. The stepped shaft 608 is clamped in the U-shaped openings 609 and fixed by the clamping plate 602 and bolts. The bearing baffle 607 is set outside the bearing 606, and the edge of the bearing baffle 607 is fixed to the support wheel 601 by bolts. A horizontal pin hole is provided at the joint between the support sleeve 603 and the support wheel frame 604. The wheel frame pin 605 is inserted into the horizontal pin hole to hinge the support sleeve 603 and the support wheel frame 604 together.

[0024] The above is the basic embodiment of the present invention. Further improvements, refinements and limitations can be made on the basis of the above: for example, each support wheel system 6 includes two support wheels 601, and the support wheels 601 are connected to the support wheel frame 604 through a stepped shaft 608.

[0025] The above is the basic embodiment of the present invention, and further improvements, refinements and limitations can be made on the basis of the above: as described, the support wheel 601 is wrapped with a rubber sleeve.

[0026] In actual operation, such as Figure 1 As shown, the articulated hydraulic support structure of the hydraulic support trolley is connected to the trolley gantry 7 by bolts through the longitudinal beam 1 of the hydraulic support trolley; as Figure 2 As shown, the support wheel system 6, the hydraulic cylinder and longitudinal beam connecting pin 4, the hydraulic cylinder 5, and the wheel frame pin 605 are hinged together; as Figure 3 As shown, the articulated hydraulic support structure support wheel system 6 includes a support wheel 601, a clamping plate 602, a support sleeve 603, a support wheel frame 604, a wheel frame pin 605, a bearing 606, a bearing baffle 607, and a stepped shaft 608. To reduce working resistance, the connection between the support wheel system and the longitudinal beam adopts an internal and external movable sliding sleeve structure. The support wheel system 6 and... Figure 2 The hydraulic support trolley outer sleeve 3 forms an inner and outer sliding structure; the upper part of the hydraulic support trolley longitudinal beam 1 adopts a U-shaped structure, serving as a longitudinal stability connection component of the gantry, and also as a guide mechanism and mounting base for the supporting wheel system 6 sliding sleeve structure; the base of the supporting wheel system 6 serves as the inner core of the sliding sleeve structure, and can extend and retract inward and outward under the push of the hydraulic cylinder 5; as shown Figure 5 As shown, the wheel bracket pin 605 is inserted into the horizontal pin hole to hinge the support sleeve 603 and the support wheel bracket 604 together. This hinged design allows for automatic attitude adjustment even under segment misalignment conditions, ensuring the polyurethane rubber surface of the support wheel assembly remains tightly fitted to the segment surface, resulting in a more convenient and reliable structure. The simulation of the support system's travel conditions is shown below. Figure 7 , 8 Figures 9 and 1 show the working states of horizontal support, climbing support, and downhill support, respectively. The hydraulic support structure adopts an articulated hydraulic support structure, and rubber is wrapped around the support wheels. This changes the contact structure between the tunnel support trolley and the tunnel segment from a rigid contact to a flexible structure, and the posture of the support structure can be adjusted according to the changes in the cross-section of the tunnel segment.

[0027] This invention is ingeniously designed, lightweight, and easy to operate. It changes the contact structure between the tunnel support trolley and the tunnel segments from a rigid to a flexible one. The support structure's posture is adjusted according to changes in the tunnel segment cross-section, eliminating the risk of damage to the concrete segments. It offers flexible and diverse usage, is lightweight, and requires no mid-construction adjustments under normal construction monitoring conditions. This improves the applicability and construction efficiency of overlapping tunnel support structures. It is reusable, reducing production costs. This invention addresses the following main problems of existing hydraulic support trolleys for overlapping shield tunnels: They often use mechanical rigid support structures, which cannot automatically adjust to working conditions when there is misalignment in the assembled segments. Operators often need to monitor the trolley's operation in real time, and negligence can easily lead to safety hazards, even cracking or damaging the segments and causing operational safety risks later. Furthermore, mechanical rigid support structures are prone to damaging the segments during support, leaving indentations that require later repair, increasing worker workload and reducing construction efficiency. This invention has excellent market prospects and development potential compared to existing technologies.

[0028] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the concept of the present invention.

Claims

1. An articulated hydraulic support structure for a hydraulic support trolley used in overlapping shield tunnels, characterized in that: The system includes a hydraulic support trolley longitudinal beam (1), connecting bolts (2), a hydraulic support trolley outer sleeve (3), a hydraulic cylinder and longitudinal beam connecting pin (4), a hydraulic cylinder (5), and multiple support wheel systems (6). The upper part of the hydraulic support trolley longitudinal beam (1) has a U-shaped structure. The bottom of the hydraulic support trolley outer sleeve (3) is fixed to the U-shaped structure of the hydraulic support trolley longitudinal beam (1) by connecting bolts (2). The support wheel systems (6) are supported inside the hydraulic support trolley outer sleeve (3). The support wheel system (6) and the outer sleeve (3) of the hydraulic support trolley adopt an inner and outer sliding sleeve structure. The base of the support wheel system (6) and the extended end of the hydraulic cylinder (5) are fixed together by welding. The hydraulic cylinder (5) extends and retracts to push the support wheel system (6) to move up and down. The bottom of the hydraulic support structure is fixedly connected to the trolley gantry (7) through the longitudinal beam (1) of the hydraulic support trolley and the connecting bolts (2). The support wheel system (6) includes a support wheel (601) and a clamping plate (602). The support sleeve (603), support wheel frame (604), wheel frame pin (605), bearing (606), bearing baffle (607), and stepped shaft (608) are provided. The support wheel frame (604) has U-shaped openings (609) on both sides facing upwards. The stepped shaft (608) is fitted into the U-shaped openings (609) and fixed by a clamping plate (602) and bolts. The bearing baffle (607) is located outside the bearing (606), and its edge passes through… Bolts are fixed to the support wheel (601); a horizontal pin hole is provided at the joint between the support sleeve (603) and the support wheel frame (604), and the wheel frame pin (605) is inserted into the horizontal pin hole to hinge the support sleeve (603) and the support wheel frame (604) together; each support wheel system (6) includes two support wheels (601), and the support wheels (601) and the support wheel frame (604) are connected by a stepped shaft (608); the support wheels (601) are wrapped with rubber sleeves.

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