Track structure with high stability for tunnel construction

Abstract

The utility model relates to a track structure with high stability in tunnel construction, in particular to a track structure with high stability in tunnel construction. The problems that in shield or TBM construction in the prior art, due to the fact that the ground condition is complex, transferring slagging-off, slag cleaning or excavating equipment is not smooth in advancing, and the equipment stability degree is low are solved. The device comprises a fixed support installed on a vehicle chassis, the section of the fixed support is in a C shape, the fixed support faces outwards to be clamped on the vehicle chassis, a supporting frame and a rotating frame are installed on the outer arc face of the fixed support, a roller is arranged at the end of the supporting frame, one end of the rotating frame is connected with the supporting frame in a hinged mode, and the other end of the rotating frame is connected with the supporting frame in a hinged mode. The other end is hinged with the fixed bracket; a hydraulic telescopic rod is arranged on the rotating frame, and a protection baffle is arranged in front of the rolling wheels. The device has the advantages that rapid adaptation switching between the rail terrain and the trackless terrain in the tunnel is achieved, all functional vehicles can further stably pass through the tunnel, meanwhile, the standard part type design is convenient to adapt to various types of vehicles in the tunnel, and the adaptability is wide.

Description

Technical Field

[0001] The utility model relates to a crawler structure with high stability used in tunnel construction, in particular to a crawler structure with high stability used in tunnel construction. Background Art

[0002] Material transfer in tunnel construction is a key link, which directly affects the efficiency and progress of construction. In the TBM (tunnel boring machine) construction method, efficient material transportation is particularly important. Here are some key information about tunnel construction transfer: TBM tunnel transportation construction method: This method uses a tunnel boring machine to excavate underground rocks and installs a conveying system in the tunnel to transport the excavated rocks and soil from the tunnel to the ground. It has the characteristics of high efficiency, regular linear shape and reduced impact on the surrounding environment. Research on efficient material transportation technology for ultra-long tunnels: With the increasing demand for the construction of ultra-long tunnels, the requirements for material transportation are also getting higher and higher. Research work focuses on how to improve material transportation efficiency and shorten construction period. Optimization of material transportation mode conversion plan: By adding new transportation channels and concrete transfer platforms, the demand for large auxiliary equipment is reduced and the efficiency of concrete transfer is improved. In addition, the optimization of rail transportation track support also helps to increase transportation speed and meet the needs of continuous and rapid excavation of TBM and synchronous lining construction. Method for transporting materials and soil for TBM tunnel construction: The patent proposes a transportation method, including setting up an auxiliary channel between the main tunnel and the horizontal guide tunnel, and setting up temporary transportation lines and multiple horizontal guide transportation lines in the entry section and excavation section of the small TBM machine. This method is coordinated with the construction process to ensure that the transportation of materials and soil is compatible with the excavation progress.

[0003] In tunnel construction, there are many transfer equipments, such as: the transfer equipments used in tunnel construction mainly include the following: tunnel boring machines used to dig tunnels from underground, ballast machines that load soil and rocks accumulated on the working surface into transport equipment and transport them out of the cave, excavation with tunnel boring machines or shield machines, rock drills and grouting machines used to set anchors for drilling holes, and special concrete spraying machines and concrete spraying manipulators required for shotcrete operations, and equipment for preparing and transporting concrete materials. The applicant believes that the current technology has the following problems, that is, the feeding channel is sometimes tracked and sometimes trackless, and the changing environment makes it difficult to adapt to each type of transfer and transportation equipment, especially tracked transportation equipment. When it is in the tracked stage, there is a conflict between the track and the track.

[0004] Furthermore, the requirements for road clearance for tracked and trackless passages are also different, and there is often the need for road clearance during the conversion process. Utility Model Content

[0005] The object of the present utility model is to solve the problems in the prior art that in shield or TBM construction, due to complex geological conditions, the transfer and mucking, slag cleaning or the progress of excavation equipment is blocked, and the stability of the equipment is low.

[0006] The specific solution of the present utility model is as follows:

[0007] Design a crawler structure with high stability for tunnel construction, including an auxiliary support system. The auxiliary support system includes a fixed bracket installed on the vehicle chassis. The cross-section of the fixed bracket is C-shaped, and its arc faces outwards to be clamped on the vehicle chassis. A support frame and a rotating frame are installed on its outer arc surface. A roller is provided at the end of the support frame. One end of both ends of the rotating frame is hinged to the support frame, and the other end is hinged to the fixed bracket; a hydraulic telescopic rod is provided on the rotating frame, and a protective baffle is arranged in front of the roller; the roller shaft for installing the roller includes screw shafts at both ends and a nut shaft in the middle. The nut shaft is clamped on the support frame and only retains the freedom of self-rotation, and the screw shaft and the nut shaft are in threaded cooperation.

[0008] In specific implementation, a hook joint is provided at the front end of the support frame, a dust cover is provided above the hydraulic telescopic rod. The hydraulic telescopic rod includes a hydraulic telescopic mechanism, and the hydraulic telescopic mechanism is connected to a hydraulic source. At the same time, a pressure measuring component is provided in the pipeline connecting the pressure source.

[0009] In specific implementation, the hydraulic telescopic mechanism includes a main telescopic rod and a flank telescopic rod that drives the main telescopic rod to swing.

[0010] In specific implementation, the roller is a quick-release roller, and its outer contour corresponds to the contour of the track in the construction tunnel.

[0011] In specific implementation, a clamping structure is provided between the fixed bracket and the chassis of the crawler structure, and corresponding positioning holes are provided at corresponding positions for the anchor positioning nails on the clamping structure.

[0012] In specific implementation, a transmission mechanism driven by a fork-type gear is provided between the output shaft of the vehicle and the wheel shaft of the roller.

[0013] In specific implementation, detection rods are installed on the roller spindles on both sides in front of the vehicle. The height of the detection rods is not lower than the lowest height of the crawler suspension, and the length of the detection rods is not less than the distance from the crawler edge to the roller.

[0014] In specific implementation, an auxiliary slag cleaning mechanism is provided on the dust cover. The auxiliary slag cleaning mechanism includes a scraper driven by an auxiliary hydraulic cylinder group, and a rotational connection is provided between the scraper and the auxiliary hydraulic cylinder group. The axis of the auxiliary hydraulic cylinder group is parallel to the axis of the hydraulic telescopic rod on the rotating frame; a limiting plate is provided on the protection baffle to restrict the degree of freedom of the scraper. The installation position of the scraper is parallel to the advancing direction of the vehicle, and a counterweight is installed behind the corresponding transport vehicle.

[0015] In specific implementation, the scraper is in the shape of a bucket, with a hollow at the bottom and a push plate provided on the inner side edge. A push-pull type hydraulic rod group is provided between the push plate and the side edge.

[0016] In specific implementation, an elastic reset mechanism is further provided between the scraper and the auxiliary hydraulic cylinder group. The elastic reset mechanism includes a connecting rod coaxially sleeved at the end of the hydraulic rod. The connecting rod and the end of the hydraulic rod are connected via a spring, and the other end of the connecting rod is installed with the rotational connection.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By adjusting the position of the rollers, the conversion between the rail transportation and the non-rail transportation of the tracked transfer function vehicle can be quickly realized.

[0019] There are various power modes. It can be hoisted by power equipment, or the docking with the transfer equipment itself can be realized through a transmission mechanism such as a fork;

[0020] The function of the probe rod is that it can sense the miscellaneous stones on both sides in the advancing direction in advance, and combined with the construction environment, the protection of the tracked equipment can be realized;

[0021] The rollers can be quickly installed and disassembled and cooperate with various standardized tracks;

[0022] The design of the slag cleaning equipment effectively solves the demand for road slag cleaning brought by different channel requirements, and further realizes the overall stable operation of the equipment;

[0023] In another implementation manner, a slag cleaning system is added, which completely makes up for the dead angle of slag cleaning, and at the same time has a certain effect of tunnel slag cleaning. At the same time, as a small-load equipment in tunnel construction, it is designed within its mechanical bearing range, and the residual slag in the tunnel can be quickly cleaned. Subsequently, combined with the belt conveying mechanism and the transport vehicle, the slag cleaning efficiency is effectively improved, and the influence of the sundries on the transport track on the vehicle operation is also effectively prevented;

[0024] During operation, the bucket can rotate. On the one hand, during the process of starting to work and falling, combined with the spring design, a certain buffer can be achieved. On the other hand, it can be retracted in the non-use state to avoid scraping with the ground again. During the scraping process, it has a good scraping effect at a certain angle with the ground, and the bucket can protect the chassis and clean the tunnel ground environment;

[0025] In specific work, the rotating device is designed as a quick-release device, and it can be further retracted and released in a timely manner. The specific quick-release can be achieved through quick-release positioning pins and positioning pin holes. Brief Description of the Drawings

[0026] Figure 1 is the front view of the structure of the present utility model after assembly;

[0027] Figure 2 is the top view of the structure of the present utility model after assembly;

[0028] Figure 3 is the left view of the structure of another embodiment of the present utility model after assembly;

[0029] Figure 4 is the right view of the structure of the present utility model;

[0030] Figure 5 is the perspective view of the present utility model after assembly;

[0031] Figure 6 is the perspective view of the auxiliary traveling device in the present utility model;

[0032] Figure 7 is the front view of the auxiliary traveling device in the present utility model;

[0033] Figure 8 is the top view of the auxiliary traveling device in the present utility model;

[0034] Figure 9 is the left view of the auxiliary traveling device in the present utility model;

[0035] Figure 10 is the right view of the auxiliary traveling device in the present utility model;

[0036] Figure 11 is the perspective view of another embodiment of the present utility model;

[0037] Figure 12 is the front view of another embodiment of the present utility model;

[0038] Figure 13 is the top view of another embodiment of the present utility model;

[0039] Figure 14 is the left view of another embodiment of the present utility model;

[0040] Figure 15 It is a schematic diagram of the principle of the shift fork transmission;

[0041] Figure 16 It is a structural schematic diagram of the roller shaft thread adjustment part;

[0042] The names of the components in the figure are: 1. Vehicle; 2. Roller; 3. Fixed bracket; 4. Rotating frame; 5. Support frame; 6. Protective baffle; 7. Track; 8. Dust cover; 9. Hook joint; 10. Hydraulic telescopic rod; 11. Probe rod; 12. Positioning pin; 13. Scraper; 14. Limit plate; 15. Push plate; 16. Auxiliary hydraulic cylinder group; 17. Idle gear driven by shift fork; 18. Power input end; 19. Roller shaft; 20. Screw shaft; 21. Nut shaft; 22. Limiting device of nut shaft. DETAILED DESCRIPTION

[0043] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. Example 1

[0044] A highly stable crawler structure used in tunnel construction, see Figures 1 to 6 The design includes a fixed bracket 3 installed on the vehicle chassis, the cross section of the fixed bracket 3 is C-shaped, and its arc is facing outward so that it can be clamped on the vehicle chassis, and the outer arc surface thereof is installed with a support frame 5 and a rotating frame 4, and the end of the support frame 5 is provided with a roller 2, and one end of the two ends of the rotating frame 4 is hingedly connected to the support frame 5, and the other end is hingedly connected to the fixed bracket 3; the rotating frame 4 is provided with a hydraulic telescopic rod 10, and a protective baffle 6 is arranged in front of the roller 2; the roller shaft for installing the roller 2 includes a screw shaft 20 at both ends and a nut shaft 21 in the middle, and the nut shaft 21 is clamped on the support frame 5 and only retains the degree of freedom of rotation, and the screw shaft 20 and the nut shaft 21 are threadedly matched. When the work needs to be converted, the vehicle is first stopped, and then the roller 2 is lowered, and the position of the roller 2 is adjusted to match the track to be matched, and then the roller 2 is further formed to support the entire vehicle, and then the power system is introduced, and the vehicle moves forward or backward with the help of the roller 2. When the track changes to trackless, the working process is reversed. During operation, before the roller 2 bears the load, the screw shaft 20 and the nut shaft 21 can be used to adjust the width to match tracks of various widths.

[0045] The front end of the support frame 5 is provided with a hook joint 9, which is convenient for working in combination with the lifting mechanism.

[0046] Above the hydraulic telescopic rod 10, there is a dust cover 8. On the one hand, it is beneficial to prevent dust for the equipment, protecting the corresponding hydraulic mechanism and pipelines. On the other hand, other supporting equipment can be further installed on the stably installed dust cover 8.

[0047] The hydraulic telescopic rod 10 includes a hydraulic telescopic mechanism, which is connected to a hydraulic source. At the same time, a pressure measuring component is provided in the pipeline connecting the pressure source. The roller 2 is a quick-release roller 2, and its outer contour corresponds to the contour of the track in the construction tunnel. This design can adapt to tracks of multiple standard sizes.

[0048] Between the fixed support 3 and the chassis of the crawler structure, there is a clamping structure. The clamping structure is provided with anchor mounting nails 12, and corresponding positioning holes are provided at the corresponding positions.

[0049] Such as Figure 15 And 16 , between the output shaft of the vehicle and the axle of the roller 2, there is a transmission mechanism driven by a fork-type gear. During the working process, when power needs to be transmitted to the roller 2, the position of the fork-type gear is toggled. By using the transformation of the gear position, the formation of tooth engagement is achieved, and the power transmission is realized. Furthermore, the roller 2 drives the vehicle to achieve displacement. For the sake of clear principle expression, Figure 15 In [reference], a simplified drawing method is adopted, using a square box to represent the power input device in actual work, and in the corresponding actual work, it can be the power input after the transmission shaft turns. The transmission shaft turning includes parallel shaft transmission and crossed shaft transmission. More specifically, it can be additional energy or a branch from the vehicle's own power output. Embodiment 2

[0050] In this embodiment, the working mode is the same as that of Embodiment 1. The specific difference is that detection rods 11 are installed on the main shafts of the rollers 2 on both sides in front of the vehicle. The height of the detection rods 11 is not lower than the lowest height at which the crawler 7 is suspended, and the length of the detection rods 11 is not less than the distance from the edge of the crawler 7 to the roller 2. During the working process, when the detection rods 11 rotate, the detection of foreign objects in space is realized, avoiding foreign objects getting stuck under the crawler 7 and affecting the displacement of the equipment. During the working process, the design of the tunnel determines that usually, the width of the crawler 7, that is, the maximum passing width that the tunnel can accommodate, determines that most of the auxiliary tracks and rollers 2 are difficult to be as wide as the crawler 7. Often, after deformation, the roller 2 can pass on the track while impurities rub against the crawler 7, even causing the equipment to get stuck. This embodiment mainly solves this problem. Detection rods are designed on the outer edge of the roller 2 to detect debris on the traveling track in the space where the crawler 7 passes in advance. Embodiment 3

[0051] In this embodiment, the working principle is the same as that of Embodiment 1. The specific difference lies in that the hydraulic telescopic mechanism includes a main telescopic rod and a side wing telescopic rod that drives the main telescopic rod to swing, ensuring proper steering and adjustment of the vehicle. Specifically, the position and angle of the main compression rod are adjusted by using two side wings. The side wing telescopic rod is not shown in the attached drawings. In actual work, refer to the working principle of the auxiliary hydraulic boot for the steering of the shield machine head. The angle of the fixed support 3 is adjusted by the difference and different angles of the hydraulic supports on both sides. Embodiment 4

[0052] In this embodiment, the working principle is the same as that of Embodiment 1. The specific difference lies in that an auxiliary slag cleaning mechanism is provided on the dust cover 8. The auxiliary slag cleaning mechanism includes a scraper 13 driven by an auxiliary hydraulic cylinder group 16. A rotational connection is provided between the scraper 13 and the auxiliary hydraulic cylinder group 16. The axis of the auxiliary hydraulic cylinder group 16 is parallel to the axis of the hydraulic telescopic rod 10 on the rotating frame 4. A limiting plate 14 is provided on the protection baffle 6 to restrict the degree of freedom of the scraper 13. The installation position of the scraper is parallel to the advancing direction of the vehicle, and a counterweight is installed behind the corresponding transport vehicle. The function of the limiting plate 14 is to achieve the mechanical balance of the equipment and prevent the scraper 13 from tilting.

[0053] The scraper 13 is in the shape of a bucket, with a hollow at the bottom and a push plate 15 provided on the inner side. A push-pull type hydraulic rod group is provided between the push plate 15 and the side. The shape design of the scraper 13 can meet the requirements of slag cleaning with high viscosity and is more suitable for the working conditions of tunnel construction.

[0054] An elastic reset mechanism is further provided between the scraper 13 and the auxiliary hydraulic cylinder group 16. The elastic reset mechanism includes a connecting rod coaxially sleeved at the end of the hydraulic rod. The connecting rod is connected to the end of the hydraulic rod via a spring, and the other end of the connecting rod is installed with the rotational connection. The elastic connection protects the equipment on the one hand and realizes the micro-adjustment of the angle during the working process on the other hand.

[0055] In this embodiment, a counterweight should be installed corresponding to the equipment behind the vehicle to maintain the balance of the equipment and ensure the stability of the small-load equipment. Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A crawler structure with high stability for use in tunnel construction, comprising an auxiliary support system, characterized in that: The auxiliary support system comprises a fixed bracket (3) mounted on a vehicle chassis, the cross section of the fixed bracket (3) being C-shaped, and its arcuate shape being directed outward so as to be clamped on the vehicle chassis, a support frame (5) and a rotating frame (4) being mounted on its outer arc surface, the end of the support frame (5) being provided with a roller (2), one end of the two ends of the rotating frame (4) being hingedly connected to the support frame (5), and the other end being hingedly connected to the fixed bracket (3); a hydraulic telescopic rod (10) being provided on the rotating frame (4), and a protective baffle (6) being provided in front of the roller (2); a roller shaft for mounting the roller (2) comprising screw shafts (20) at both ends and a nut shaft (21) in the middle, the nut shaft (21) being clamped on the support frame (5) so as to retain only the degree of freedom of self-rotation, and the screw shaft (20) and the nut shaft (21) being threadedly matched.

2. The crawler structure with high stability for tunnel construction as claimed in claim 1, characterized in that: A hook joint (9) is provided at the front end of the support frame (5), a dust cover (8) is provided above the hydraulic telescopic rod (10), and the hydraulic telescopic rod (10) comprises a hydraulic telescopic mechanism, the hydraulic telescopic mechanism is connected to a hydraulic source, and a pressure measuring component is provided in a pipeline connected to the pressure source.

3. The crawler structure with high stability for tunnel construction as claimed in claim 2, characterized in that: The hydraulic telescopic mechanism comprises a main telescopic rod and a wing telescopic rod which drives the main telescopic rod to swing.

4. The crawler structure with high stability for tunnel construction as claimed in claim 3, characterized in that: The roller (2) is a quick-detachable roller, and its outer contour corresponds in shape and position to the contour of the track in the construction tunnel.

5. The crawler structure with high stability for tunnel construction as claimed in claim 4, characterized in that: A clamping structure is provided between the fixed bracket (3) and the chassis of the crawler structure, and an anchoring positioning nail (12) is provided on the clamping structure, and a positioning hole is provided at a matching corresponding position.

6. The crawler structure with high stability for tunnel construction as claimed in claim 1, characterized in that: A transmission mechanism driven by a shift fork gear is provided between the output shaft of the vehicle and the axle of the roller (2).

7. The crawler structure with high stability for tunnel construction as claimed in claim 1, characterized in that: Probe rods (11) are installed on the main shafts of the rollers (2) on both sides in front of the vehicle. The height of the probe rods (11) is not lower than the lowest height of the crawler track (7) suspended in the air, and the length of the probe rods (11) is not less than the distance from the edge of the crawler track (7) to the rollers (2).

8. The crawler structure with high stability for tunnel construction as claimed in claim 2, characterized in that: The dust cover (8) is provided with an auxiliary desludging mechanism, the auxiliary desludging mechanism comprising a scraper (13) driven by an auxiliary hydraulic cylinder group (16), a rotation connection being provided between the scraper (13) and the auxiliary hydraulic cylinder group (16), the axis of the auxiliary hydraulic cylinder group (16) being parallel to the axis of the hydraulic telescopic rod (10) on the rotating frame (4); a limit plate (14) is provided on the protective baffle (6) to constrain the degree of freedom of the scraper (13), the installation position of the scraper is parallel to the forward direction of the vehicle, and a counterweight is installed at the rear of the corresponding transport vehicle.

9. The crawler structure with high stability for tunnel construction as claimed in claim 8, characterized in that: The scraper (13) is bucket-shaped, with a hollow bottom, a push plate (15) provided on the inner side, and a push-pull type hydraulic rod group provided between the push plate (15) and the side.

10. The crawler structure with high stability for tunnel construction as claimed in claim 8, characterized in that: An elastic reset mechanism is also provided between the scraper (13) and the auxiliary hydraulic cylinder group (16), the elastic reset mechanism comprising a connecting rod coaxially sleeved on the end of the hydraulic rod, the connecting rod and the end of the hydraulic rod being connected via a spring, and the other end of the connecting rod being mounted with the rotating connection.

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