Crawler leg module, crawler chassis and tunnel construction trolley

Abstract

The utility model discloses the field of tunnel construction machinery, specifically provides a caterpillar track supporting leg module, caterpillar chassis and tunnel construction trolley. The module includes caterpillar track body and supporting leg, and the supporting leg includes the seat body of hinged caterpillar track body, and the hinging axis extends along the left and right direction, and the top of seat body is connected with telescopic arm through slewing mechanism, and the axis of slewing mechanism extends vertically, and telescopic arm includes the basic arm of being connected with slewing mechanism and the lifting arm of being guided assembled on basic arm, and lifting driving device is connected between lifting arm and basic arm, and the top of lifting arm can be connected with the upper layer platform of car frame, and the both ends can be connected with the longitudinal beam of car frame. The chassis and trolley all include above -mentioned module. The flexible feature of caterpillar track supporting leg module itself can make the tunnel construction trolley when rugged uneven road construction, the attitude of caterpillar track body is adjusted flexibly, and the passability of construction trolley is promoted. For large -scale equipment, can through lifting arm jacking frame to certain height, satisfies large -scale equipment traffic.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel construction machinery, and in particular relates to a tracked outrigger module, a tracked chassis and a tunnel construction trolley. Background Technology

[0002] Tunnel excavation and initial support are crucial stages in tunnel construction. For tunnels constructed using the drill-and-blast method, construction equipment compatible with each stage of the process is required. For small-to-medium cross-section tunnels, the internal space is confined, and the variety and quantity of internal equipment are numerous, resulting in longer timeframes for passing and scheduling, making construction organization more challenging.

[0003] To address the aforementioned issues, existing technologies have begun to include multi-functional trolleys integrating various functions. Examples include the multi-functional work platform disclosed in patent application CN113074001A and the multi-functional trolley disclosed in patent application CN110107302A. These multi-functional trolleys are characterized by integrating multiple construction devices onto their chassis (frame), with different devices responsible for different construction procedures. Furthermore, the chassis is configured as a portal frame structure, allowing for the passage of other construction trolleys within the frame.

[0004] The aforementioned multi-functional trolleys are typically equipped with a tracked walking mechanism, connected to outriggers whose tops are directly connected to the bottom of the chassis. However, when traversing uneven terrain, one track can easily become suspended in the air, and steering becomes less agile, resulting in poor maneuverability. Furthermore, the outrigger height is fixed, and some large construction trolleys are quite tall, potentially preventing them from passing through the internal space of the chassis. Utility Model Content

[0005] The purpose of this utility model is to provide a tracked outrigger module to solve the technical problems of poor maneuverability and insufficient internal space height for large construction trolleys in existing tunnel construction trolleys with gantry-type frames. Another purpose of this utility model is to provide a tracked chassis to solve the same technical problems. Furthermore, this utility model also aims to provide a tunnel construction trolley using the aforementioned tracked chassis to solve the same technical problems.

[0006] To achieve the above objectives, the technical solution for the tracked outrigger module provided by this utility model is as follows: A track support leg module includes a track body and a support leg mounted on the track body. The support leg includes a seat hinged to the track body, with the hinge axis extending in the left-right direction. A telescopic arm is connected to the top of the seat via a slewing mechanism, allowing the seat to rotate relative to the telescopic arm. The axis of the slewing mechanism extends vertically. The telescopic arm includes a base arm connected to the slewing mechanism and a lifting arm guided and mounted on the base arm. A lifting drive device is connected between the lifting arm and the base arm. A platform connection structure for connecting to the upper platform of the vehicle frame is provided at the top of the lifting arm, and longitudinal beam connection structures for connecting to longitudinal beams of the vehicle frame located below the upper platform are provided at both the front and rear ends, so as to connect the track support leg module to the upper platform and longitudinal beams of the vehicle frame via the lifting arm.

[0007] As a further improvement, the lifting arm is an inverted T-shaped structure that is integrally fitted outside the basic arm. It includes a vertical section and a horizontal section connected to the lower end of the vertical section. The platform connecting structure is located at the top of the vertical section, and the longitudinal beam connecting structures are located at the front and rear ends of the horizontal section, respectively.

[0008] As a further improvement, the platform connection structure is a flange located at the top of the vertical section, and the longitudinal beam connection structure is a flange located at both ends of the horizontal section.

[0009] As a further improvement, the base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, and a pinion is connected to the output shaft of the power head and connected to the slewing ring through the pinion.

[0010] As a further improvement, the power head is located below the top plate, and its output shaft passes through the top plate and connects to the pinion.

[0011] As a further improvement, the base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, a pinion gear connected to the output shaft of the power head, and a slewing ring connected to the pinion gear. A limit member is fixed in the horizontal section, and a stop member is provided on the top plate. When the track body is in the return-to-center state, the limit member and the stop member stop and cooperate.

[0012] This utility model is a pioneering invention, and its beneficial effects are as follows: When the track support leg module provided by this utility model is applied to a vehicle frame, the top of the telescopic arm can be connected to the upper platform of the vehicle frame, and the front and rear ends can be connected to the longitudinal beams, thus forming a stable three-point connection structure. At the same time, the track support leg module itself is relatively flexible. Specifically, the seat of the track support leg module is hinged to the track body, which allows the track body and the seat to have the freedom of pitch and swing; the seat and the telescopic arm are connected through a rotary mechanism, allowing the seat to rotate relative to the telescopic arm, thereby enabling the track body to swing relative to the vehicle frame; the lifting arm can move up and down, thus driving the track body to move up and down while the vehicle frame remains stationary, or driving the vehicle frame to move up and down while the track body remains stationary.

[0013] In summary, the inherent flexibility of the tracked outrigger module allows the tunnel construction trolley to adjust the track body's posture flexibly when working on uneven terrain, improving the trolley's passability. For large equipment, the frame can be raised to a certain height using a lifting arm to allow for its passage.

[0014] To achieve the above objectives, the technical solution for the tracked chassis provided by this utility model is as follows: A tracked chassis includes a frame, which includes an upper platform. Each of the four corners of the upper platform has a support leg. A longitudinal beam located below the upper platform connects the front and rear support legs on the same side. At least one tracked leg module is connected to each of the left and right sides of the frame. Each tracked leg module includes a track body and a leg mounted on the track body. The leg includes a seat hinged to the track body, with the hinge axis extending in the left-right direction. A telescopic arm is connected to the top of the seat via a slewing mechanism, allowing the seat to rotate relative to the telescopic arm. The axis of the slewing mechanism extends vertically. The telescopic arm includes a base arm connected to the slewing mechanism and a lifting arm guided and mounted on the base arm. A lifting drive device connects the lifting arm and the base arm. The top of the lifting arm is connected to the upper platform via a platform connection structure, and its front and rear ends are connected to the longitudinal beam via longitudinal beam connection structures.

[0015] As a further improvement, a vertical beam connects the longitudinal beam and the upper platform.

[0016] As a further improvement, the lifting arm is an inverted T-shaped structure that is integrally fitted outside the basic arm. It includes a vertical section and a horizontal section connected to the lower end of the vertical section. The platform connecting structure is located at the top of the vertical section, and the longitudinal beam connecting structures are located at the front and rear ends of the horizontal section, respectively.

[0017] As a further improvement, the platform connection structure is a flange located at the top of the vertical section, and the longitudinal beam connection structure is a flange located at both ends of the horizontal section.

[0018] As a further improvement, the base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, and a pinion is connected to the output shaft of the power head and connected to the slewing ring through the pinion.

[0019] As a further improvement, the power head is located below the top plate, and its output shaft passes through the top plate and connects to the pinion.

[0020] As a further improvement, the base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, a pinion gear connected to the output shaft of the power head, and a slewing ring connected to the pinion gear. A limit member is fixed in the horizontal section, and a stop member is provided on the top plate. When the track body is in the return-to-center state, the limit member and the stop member stop and cooperate.

[0021] This utility model is a pioneering invention, and its beneficial effects are as follows: the tracked chassis frame is also a portal frame structure. Specifically, the upper platform can be used to carry supporting equipment used during tunnel construction. The support legs at the four corners of the upper platform can support the ground when the chassis is not moving forward or backward (corresponding to the construction state), ensuring stability during construction. The space below the upper platform can be used for the passage of other construction equipment.

[0022] The top of the telescopic arm of the tracked outrigger module is connected to the upper platform of the chassis, and the front and rear ends are connected to the longitudinal beams, thus forming a stable three-point connection structure to ensure the stability of the chassis during movement and lifting.

[0023] Meanwhile, the track outrigger module itself is quite flexible. Specifically, the base of the track outrigger module is hinged to the track body, which gives the track body and the base a degree of freedom to pitch and swing. The base and the telescopic arm are connected by a slewing mechanism, and the base can rotate relative to the telescopic arm, thereby enabling the track body to swing relative to the chassis. The lifting arm can be raised and lowered, thereby driving the track body to rise and fall while the chassis is stationary, or driving the chassis to rise and fall while the track body is stationary.

[0024] In summary, the inherent flexibility of the tracked outrigger module allows the tunnel construction trolley to adjust the track body's posture flexibly when working on uneven terrain, improving the trolley's passability. For large equipment, the frame can be raised to a certain height using a lifting arm to allow for its passage.

[0025] To achieve the above objectives, the technical solution of the tunnel construction trolley provided by this utility model is as follows: A tunnel construction trolley includes a tracked chassis with supporting equipment for tunnel construction mounted on it. The tracked chassis includes a frame, which includes an upper platform. Each of the four corners of the upper platform has a support leg. A longitudinal beam located below the upper platform connects the front and rear support legs on the same side. At least one tracked leg module is connected to each of the left and right sides of the frame. Each tracked leg module includes a track body and a leg mounted on the track body. The leg includes a seat hinged to the track body, with the hinge axis extending in the left-right direction. The top of the seat is connected to a telescopic arm via a slewing mechanism, allowing the seat to rotate relative to the telescopic arm. The axis of the slewing mechanism extends vertically. The telescopic arm includes a basic arm connected to the slewing mechanism and a lifting arm guided and mounted on the basic arm. A lifting drive device connects the lifting arm and the basic arm. The top of the lifting arm is connected to the upper platform via a platform connection structure, and the front and rear ends are connected to the longitudinal beam via longitudinal beam connection structures.

[0026] As a further improvement, a vertical beam connects the longitudinal beam and the upper platform.

[0027] As a further improvement, the lifting arm is an inverted T-shaped structure that is integrally fitted outside the basic arm. It includes a vertical section and a horizontal section connected to the lower end of the vertical section. The platform connecting structure is located at the top of the vertical section, and the longitudinal beam connecting structures are located at the front and rear ends of the horizontal section, respectively.

[0028] As a further improvement, the platform connection structure is a flange located at the top of the vertical section, and the longitudinal beam connection structure is a flange located at both ends of the horizontal section.

[0029] As a further improvement, the base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, and a pinion is connected to the output shaft of the power head and connected to the slewing ring through the pinion.

[0030] As a further improvement, the power head is located below the top plate, and its output shaft passes through the top plate and connects to the pinion.

[0031] As a further improvement, the base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, a pinion gear connected to the output shaft of the power head, and a slewing ring connected to the pinion gear. A limit member is fixed in the horizontal section, and a stop member is provided on the top plate. When the track body is in the return-to-center state, the limit member and the stop member stop and cooperate.

[0032] This utility model is a pioneering invention, and its beneficial effects are as follows: the tracked chassis frame is also a portal frame structure. Specifically, the upper platform can be used to carry supporting equipment used during tunnel construction. The support legs at the four corners of the upper platform can support the ground when the chassis is not moving forward or backward (corresponding to the construction state), ensuring stability during construction. The space below the upper platform can be used for the passage of other construction equipment.

[0033] The top of the telescopic arm of the tracked outrigger module is connected to the upper platform of the chassis, and the front and rear ends are connected to the longitudinal beams, thus forming a stable three-point connection structure to ensure the stability of the chassis during movement and lifting.

[0034] Meanwhile, the track outrigger module itself is quite flexible. Specifically, the base of the track outrigger module is hinged to the track body, which gives the track body and the base a degree of freedom to pitch and swing. The base and the telescopic arm are connected by a slewing mechanism, and the base can rotate relative to the telescopic arm, thereby enabling the track body to swing relative to the chassis. The lifting arm can be raised and lowered, thereby driving the track body to rise and fall while the chassis is stationary, or driving the chassis to rise and fall while the track body is stationary.

[0035] In summary, the inherent flexibility of the tracked outrigger module allows the tunnel construction trolley to adjust the track body's posture flexibly when working on uneven terrain, improving the trolley's passability. For large equipment, the frame can be raised to a certain height using a lifting arm to allow for its passage. Attached Figure Description

[0036] Figure 1 This is a structural schematic diagram of an embodiment of the tracked outrigger module in this utility model; Figure 2 for Figure 1 Schematic diagram of the structure of the central support and the rotary mechanism; Figure 3 for Figure 1 Schematic diagram of the telescopic boom; Figure 4 for Figure 1 Cross-sectional view of the telescopic boom; Figure 5 This is a structural schematic diagram of the tracked chassis embodiment of this utility model.

[0037] Explanation of reference numerals in the attached figures: 1. Track body; 2. Top plate; 3. Slewing bearing; 4. Front flange; 5. Lifting arm; 6. Top flange; 7. Rear flange; 8. Main arm; 9. Pinion; 10. Power head; 11. Vertical plate; 12. Articulated shaft; 13. Encoder; 14. Stop; 15. Limiting component; 16. Rib; 17. Upper pin; 18. Lower pin; 19. Lifting cylinder; 100. Upper platform; 200. Support leg; 300. Longitudinal beam; 400. Vertical beam. Detailed Implementation

[0038] For tunnels with small to medium cross-sections, using a construction trolley equipped with a gantry frame is a feasible option. The space inside the frame allows other equipment to pass through, eliminating the problem of vehicles being unable to pass each other in narrow spaces. However, the ground at the bottom of the tunnel is not a completely flat surface, and there is still room for improvement in the maneuverability of the construction trolley during actual construction.

[0039] To improve the passability of construction trolleys, the basic concept of this utility model is to provide a tracked outrigger module that can be connected to the upper platform of the frame at the top and to the longitudinal beams of the frame at the front and rear ends, and has flexible degrees of freedom. The tracked outrigger module has at least the degrees of freedom of lifting, pitching, and rotating, so that the tracks can be adjusted to make corresponding movements for different ground surfaces, thereby flexibly passing through different ground surfaces.

[0040] Based on the above concept, the present invention will be further described in detail below with reference to the embodiments.

[0041] Specific implementation of the track support leg module provided by this utility model: The tracked leg module provided in this embodiment is as follows: Figure 1 As shown, it consists of two main parts: the outriggers and the track body 1. The outriggers are mounted on the track body 1. The track body 1 is specifically consistent with the tracked walking mechanism in the prior art, including a frame, track chain, drive wheel, guide wheel, tensioning device, drag chain wheel, etc., which will not be described in detail here.

[0042] The outriggers are hinged to the track body 1, with the hinge axis 12 extending in the left-right direction, meaning the outriggers can pitch and swing relative to the track body 1. Specifically, as shown... Figure 1 and Figure 2As shown, the outrigger includes a base, which is hinged to the track body 1. More specifically, the base includes two vertical plates 11 spaced apart on the left and right, and a top plate 2 connected to the top of the two vertical plates 11. The top plate 2 is supported by the vertical plates 11, and the base is hinged to the track body 1 through the two vertical plates 11. The two vertical plates 11 can be connected to the same hinge shaft 12, in which case the hinge shaft 12 extends through the track body 1 from left to right, ensuring the coaxiality of the two vertical plates 11. Of course, it is also possible that the two vertical plates 11 are hinged to the track body 1 through different pins, in which case the axes of the two pins still coincide.

[0043] A telescopic arm is connected to the top of the base. The telescopic arm is a support boom structure that can extend and retract vertically. Specifically, the telescopic arm and the top of the base are connected by a slewing mechanism. The axis of the slewing mechanism extends vertically, allowing the telescopic arm to rotate relative to the base, thereby enabling the support arm and the track body 1 to swing relative to each other (left and right). In other words, the track body 1 can achieve independent steering, improving the chassis's steering capability.

[0044] The telescopic boom consists of two main parts: the base boom 8 and the lifting boom 5. The base boom 8 is connected to the slewing mechanism, and the lifting boom 5 is guided and mounted on the base boom 8. In other words, the lifting boom 5 and the base boom 8 are guided and coordinated vertically. Of course, in order to meet the lifting and lowering of the lifting boom 5, a lifting drive device is also connected between the lifting boom 5 and the base boom 8. The operation of the lifting drive device can drive the lifting boom 5 to rise and fall.

[0045] The lifting boom 5 is connected to the chassis. The movement of the lifting boom 5 can then be converted into relative movement between the track body 1 and the chassis, effectively creating a floating chassis. For example, with the chassis stationary, the movement of the lifting boom 5 can raise and lower the track body 1, allowing for flexible adjustment of its position to accommodate different road surfaces and prevent one side of the track body 1 from being suspended in the air. Alternatively, with the track body 1 stationary, the movement of the lifting boom 5 can raise and lower the chassis, allowing for adjustment of the chassis height to accommodate tunnel construction machinery of varying heights, ensuring that taller equipment can pass normally through the gantry's interior space.

[0046] Tracked outrigger modules can be adapted to the following frame structures: Figure 5 As shown, the overall structure is a portal frame, including an upper platform 100. Each of the four corners of the upper platform 100 is equipped with a support leg 200. The support legs 200 can be hydraulic outriggers. During construction, after the tunnel construction trolley is moved into place, the support legs 200 can brace against the ground to withstand the reaction force during construction, thereby improving the stability of the tunnel construction trolley.

[0047] To ensure the strength and stability of the frame, a longitudinal beam 300 is connected between the front and rear support legs 200 on the left and right sides, and the longitudinal beam 300 is located below the upper platform 100.

[0048] It should be noted that the upper platform 100 refers to the platform located above the longitudinal beam 300, and its height determines the height of tunnel construction equipment that can pass through inside the chassis. The upper platform 100 can be used to mount supporting construction equipment, such as anchor drilling rigs, arch frame assembly arms, and wet spraying equipment. To facilitate the normal installation of different construction equipment, an additional mounting frame can actually be installed at the top of the upper platform 100.

[0049] The top of the lifting arm 5 is connected to the upper platform 100, and the front and rear ends are connected to the longitudinal beams 300, as shown below. Figure 5 As shown, in other words, the top of the lifting arm 5 is provided with a platform connection structure for connecting with the upper platform 100, and the front and rear ends are respectively provided with longitudinal beam 300 connection structures for connecting with the longitudinal beam 300.

[0050] In this embodiment, the track outrigger module has three fixed connections with the frame at its middle and top positions, ensuring a stable and reliable connection between the track outrigger module and the frame. The lifting arm 5 connects the upper platform 100 and the longitudinal beam 300, ensuring the overall strength of the frame. The track outrigger module can be flexibly adjusted to adjust the track body 1 for different terrains or different tunnel construction equipment, enabling the lifting and turning of the track body 1 or the frame, thereby improving the passability of the construction trolley and accommodating the passage of large equipment.

[0051] For tracked chassis comprising a frame and tracked leg modules, the tracked leg modules are connected to the left and right sides of the frame. To ensure normal movement of the tracked chassis, at least one tracked leg module should be connected to each of the left and right sides of the frame. For larger construction trolleys, two tracked leg modules can be connected to each of the left and right sides of the frame; see reference [reference needed]. Figure 5 .

[0052] In addition, such as Figure 5 As shown, to further enhance the strength of the frame, vertical beams 400 (i.e., vertically extending support columns) can be connected before the upper platform 100 and the longitudinal beams 300. The number of vertical beams 400 is not specifically limited. Without affecting the normal operation of the supporting equipment during tunnel construction, the number of vertical beams 400 can be increased appropriately.

[0053] In a preferred embodiment, such as Figure 1 , Figure 3 and Figure 4As shown, the lifting arm 5 is fitted over the basic arm 8, meaning the inner circumferential surface of the lifting arm 5 is aligned with the outer circumferential surface of the basic arm 8 for lifting guidance. The lifting arm 5 has an inverted T-shaped structure, specifically comprising a vertical section and a horizontal section connected to the lower end of the vertical section. The inverted T-shaped structure refers to its overall shape resembling an inverted letter T. In practice, to ensure the strength of the lifting arm 5, a rib plate 16 can be connected between the vertical and horizontal sections.

[0054] The lifting arm 5 is connected to the upper platform 100 via a vertical section and to the longitudinal beam 300 via a horizontal section. In other words, the top of the vertical section has a platform connection structure, and the front and rear ends of the horizontal section have longitudinal beam 300 connection structures.

[0055] In this preferred embodiment, the lifting arm 5 extends longitudinally (front and back) with a horizontal section, which, after being connected to the longitudinal beam 300, can be considered as part of the longitudinal beam 300. Compared to the embodiment where the horizontal section is not provided and the front and rear end faces of the vertical section are directly connected to the longitudinal beam 300, the preferred embodiment is obviously more convenient to connect to the longitudinal beam 300 via the horizontal section.

[0056] Specifically, the top of the vertical section can be connected to the upper platform 100 via a flange, and the front and rear ends of the horizontal section can also be connected to the longitudinal beam 300 via flanges. In other words, the platform connection structure is a flange located at the top of the vertical section, which can be defined as the top flange 6. The longitudinal beam 300 connection structure consists of flanges located at the front and rear ends of the horizontal section, which can be defined as the front flange 4 and the rear flange 7, respectively.

[0057] When assembling tracked outrigger modules on the chassis, flanges can be directly bolted together, which is convenient, efficient, and requires no welding.

[0058] The lifting drive device connecting the lifting arm 5 and the basic arm 8 can be a lifting cylinder 19, such as... Figure 4 As shown, the basic arm 8 can also be configured as a hollow structure, and the lifting cylinder 19 can be located inside the basic arm 8. In this case, both ends of the lifting cylinder 19 can be connected to the lifting arm 5 and the basic arm 8 respectively through pins. For ease of description, the two pins can be defined as the upper pin 17 and the lower pin 18. The upper end of the lifting cylinder 19 is connected to the lifting arm 5 through the upper pin 17, and the lower end of the lifting cylinder 19 is connected to the basic arm 8 through the lower pin 18.

[0059] It should be noted that in other embodiments, the lifting arm 5 can also be guided and cooperated with the basic arm 8 in other ways. For example, a dovetail groove can be provided on the lifting arm 5, and the basic arm 8 can have a shape that matches the dovetail groove. The opening of the dovetail groove can face left or right without affecting the connection between the front and rear ends of the lifting arm 5 and the longitudinal beam 300, and the connection between the top end and the upper platform 100. At the same time, the lifting drive device can also be replaced with an electric cylinder.

[0060] In some embodiments, the rotary mechanism may employ a slewing bearing 3. As those skilled in the art will understand, the slewing bearing 3 generally includes a rotating body, a fixed body, and rolling elements between the rotating ring and the fixed ring. The rotating ring has a toothed structure; for example, when the inner ring is a rotating ring, the inner circumference of the inner ring has a toothed structure, and when the outer ring is a rotating ring, the outer circumference of the outer ring has a toothed structure (not shown in the figure). The toothed structure can mesh with a pinion 9, and rotate under the drive of the pinion 9.

[0061] Those skilled in the art will understand that the pinion 9 here refers to the gear that drives the rotation of the slewing ring. Because it is smaller than the size of the slewing ring, it is generally referred to as the pinion 9 in the art.

[0062] Specifically, such as Figures 1-4 As shown, the slewing mechanism includes a slewing bearing 3 mounted on the top plate 2 and a slewing drive device that drives the slewing ring of the slewing bearing 3 to rotate. The slewing drive device includes a power head 10, which most basically includes a motor or a hydraulic motor. Of course, a reducer can also be connected to the motor or hydraulic motor. The output shaft of the power head 10 is connected to a pinion 9, which is connected to the slewing ring. Without a reducer, the output shaft of the power head 10 is the power shaft of the motor or hydraulic motor. With a reducer, the output shaft of the power head 10 is the output shaft of the reducer.

[0063] Accordingly, to facilitate the connection between the basic arm 8 and the slewing bearing 3, a circular flange is provided at the lower end of the basic arm 8.

[0064] Compared with other forms of rotary mechanisms, such as using a splined shaft with rolling bearings, using a slewing bearing 3 has the advantages of convenience and higher strength.

[0065] In a preferred embodiment, to avoid interference between the power head 10 and the longitudinal beam 300 or the horizontal section when the track body 1 and the lifting arm 5 move relative to each other, the power head 10 can be located below the top plate 2. Specifically, the output shaft of the power head 10 passes through the top plate 2 and is connected to the pinion 9. In this case, the power head 10 can be connected to the vertical plate 11 through a bracket.

[0066] It is easy to understand that, in most cases except when turning, there is no need to swing the track body 1; the track body 1 only needs to be in the centered state. Therefore, the lifting arm 5 has a limiter 15 fixed in the horizontal section, and a stop 14 fixed on the top plate 2. When the track body 1 is in the centered state, the limiter 15 and the stop 14 engage, thus achieving mechanical limiting of the slewing mechanism and ensuring that the track body 1 can reliably be in the centered state. Both the limiter 15 and the stop 14 can be plate-like structures.

[0067] In order to precisely control the rotation angle of the slewing mechanism, in some embodiments, an encoder 13 can be installed on the pinion 9. The result of the encoder 13 can be fed back to the power head 10 to achieve precise control of the rotation angle.

[0068] Specific embodiments of the tracked chassis provided by this utility model: The tracked chassis includes a frame and tracked leg modules, the specific structure of which is described in the above-described implementation of the tracked leg modules and will not be further explained here.

[0069] Specific implementation method of the tunnel construction trolley provided by this utility model: The tunnel construction trolley includes the tracked chassis mentioned above, and the tracked chassis is equipped with supporting devices used in tunnel construction, such as anchor drilling rigs, wet spraying equipment, arch frame installation devices, and arch frame transfer devices.

[0070] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tracked outrigger module, characterized in that, The system includes a track body and outriggers mounted on the track body. Each outrigger includes a seat hinged to the track body, with the hinge axis extending in the left-right direction. The top of the seat is connected to a telescopic arm via a slewing mechanism, allowing the seat to rotate relative to the telescopic arm. The axis of the slewing mechanism extends vertically. The telescopic arm includes a base arm connected to the slewing mechanism and a lifting arm guided and mounted on the base arm. A lifting drive device is connected between the lifting arm and the base arm. At the top of the lifting arm, there is a platform connection structure for connecting to the upper platform of the chassis. At both the front and rear ends, there are longitudinal beam connection structures for connecting to the longitudinal beams of the chassis located below the upper platform, so that the track outrigger module can be connected to the upper platform and longitudinal beams of the chassis via the lifting arm.

2. The tracked outrigger module according to claim 1, characterized in that, The lifting arm is an inverted T-shaped structure that is integrally fitted outside the basic arm. It includes a vertical section and a horizontal section connected to the lower end of the vertical section. The platform connecting structure is located at the top of the vertical section, and the longitudinal beam connecting structures are located at the front and rear ends of the horizontal section respectively.

3. The tracked outrigger module according to claim 2, characterized in that, The platform connection structure consists of a flange located at the top of the vertical section, while the longitudinal beam connection structure consists of flanges located at both ends of the horizontal section.

4. The tracked outrigger module according to any one of claims 1-3, characterized in that, The base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, and a pinion is connected to the output shaft of the power head and connected to the slewing ring through the pinion.

5. The tracked outrigger module according to claim 4, characterized in that, The power head is located below the top plate, and its output shaft passes through the top plate and connects to the pinion.

6. The tracked outrigger module according to claim 2 or 3, characterized in that, The base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, a pinion gear connected to the output shaft of the power head, and a slewing ring connected to the pinion gear. A limit member is fixed in the horizontal section, and a stop member is provided on the top plate. When the track body is in the return-to-center state, the limit member and the stop member stop and cooperate.

7. A tracked chassis, characterized in that, The vehicle includes a frame, which includes an upper platform. Each of the four corners of the upper platform has a support leg. A longitudinal beam located below the upper platform connects the front and rear support legs on the same side. At least one track support leg module is connected to each of the left and right sides of the frame. Each track support leg module includes a track body and a support leg mounted on the track body. The support leg includes a seat hinged to the track body, with the hinge axis extending in the left-right direction. The top of the seat is connected to a telescopic arm via a slewing mechanism, allowing the seat to rotate relative to the telescopic arm. The axis of the slewing mechanism extends vertically. The telescopic arm includes a basic arm connected to the slewing mechanism and a lifting arm guided and mounted on the basic arm. A lifting drive device is connected between the lifting arm and the basic arm. The top of the lifting arm is connected to the upper platform via a platform connection structure, and the front and rear ends are connected to the longitudinal beam via longitudinal beam connection structures.

8. The tracked chassis according to claim 7, characterized in that, Vertical beams connect the longitudinal beams and the upper platform.

9. The tracked chassis according to claim 7 or 8, characterized in that, The lifting arm is an inverted T-shaped structure that is integrally fitted outside the basic arm. It includes a vertical section and a horizontal section connected to the lower end of the vertical section. The platform connecting structure is located at the top of the vertical section, and the longitudinal beam connecting structures are located at the front and rear ends of the horizontal section respectively.

10. The tracked chassis according to claim 9, characterized in that, The platform connection structure consists of a flange located at the top of the vertical section, while the longitudinal beam connection structure consists of flanges located at both ends of the horizontal section.

11. The tracked chassis according to claim 7 or 8, characterized in that, The base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, and a pinion is connected to the output shaft of the power head and connected to the slewing ring through the pinion.

12. The tracked chassis according to claim 11, characterized in that, The power head is located below the top plate, and its output shaft passes through the top plate and connects to the pinion.

13. The tracked chassis according to claim 7 or 8, characterized in that, The base includes two vertical plates spaced apart on the left and right, which are hinged to the track body. A top plate is supported at the top of the two vertical plates. The slewing mechanism includes a slewing bearing mounted on the top plate and a slewing drive device that drives the slewing bearing to rotate. The slewing drive device includes a power head, a pinion gear connected to the output shaft of the power head, and a slewing ring connected to the pinion gear. A limit member is fixed in the horizontal section, and a stop member is provided on the top plate. When the track body is in the return-to-center state, the limit member and the stop member stop and cooperate.

14. A tunnel construction trolley, comprising a tracked chassis, on which a set of supporting equipment for tunnel construction is mounted, characterized in that, The tracked chassis is the tracked chassis as described in any one of claims 7-13.

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