Rack rail clamping locomotive

Abstract

The utility model provides a rack rail clamping locomotive. The rack rail clamping locomotive comprises a main cab, an auxiliary cab, a hydraulic chamber, a battery pack, an electrical chamber, a steering wheel set, a driving mechanism and a chassis, the driving mechanism and the steering wheel set are arranged on the chassis; the chassis comprises a first frame, a second frame and a third frame which are connected in sequence, the main cab is arranged on the first frame, the battery pack and the electrical room are arranged on the second frame, and the auxiliary cab is arranged on the third frame; the driving mechanism is electrically connected with the battery pack so as to drive the rack rail clamping locomotive to move on the rail; and the hydraulic chamber is arranged on the first frame and / or the third frame. According to the rack rail trapped rail locomotive, the use quality of the rack rail trapped rail locomotive is improved by optimizing the layout of the locomotive.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary transportation technology, and in particular to a rack rail locomotive. Background Technology

[0002] As an important auxiliary transportation equipment in scenarios such as underground mining and mountain rail transport, rack and pinion locomotives play an irreplaceable role under specific working conditions due to their unique working principle. These locomotives use a drive mechanism to drive the drive wheels, which mesh with the rack and pinion rails on the track, thereby enabling the locomotive to travel stably on the track.

[0003] However, existing rack rail locomotives have revealed numerous problems that urgently need to be addressed in practical applications. On the one hand, their large size occupies a significant amount of space, increasing manufacturing and transportation costs and imposing high demands on installation and storage space. On the other hand, the excessive height of existing locomotives makes them extremely demanding in terms of tunnel height, width, and flatness. In some tunnels with limited space and complex geological conditions, existing rack rail locomotives cannot be used at all because they cannot meet the installation and operation requirements. This not only severely limits the equipment's applicability, making it difficult for it to function in many scenarios, but also increases the difficulty and cost of construction.

[0004] Furthermore, in some mine roadways or old mining areas, the existing rack rail locomotives cannot be used due to unsuitable roadway conditions, and other transportation methods must be adopted. This seriously affects transportation efficiency, reduces the stability and reliability of the entire production system, and is not conducive to improving the quality of rack rail locomotive use. Utility Model Content

[0005] In view of this, the present invention aims to propose a rack rail locomotive to improve the service quality of rack rail locomotives.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A rack rail locomotive includes a main driver's cab, a co-driver's cab, a hydraulic compartment, a battery pack, an electrical compartment, a steering wheel assembly, a drive mechanism, and a chassis;

[0008] The drive mechanism and the steering wheel assembly are both mounted on the chassis;

[0009] The chassis includes a first frame, a second frame, and a third frame connected in sequence. The main driver's cab is located on the first frame, the battery pack and the electrical compartment are located on the second frame, and the co-driver's cab is located on the third frame.

[0010] The drive mechanism is electrically connected to the battery pack to drive the rack rail locomotive to move on the track.

[0011] The hydraulic chamber is located on the first frame and / or the third frame.

[0012] Furthermore, the steering wheel assembly includes two steering wheel assemblies respectively disposed on the first frame and on the second frame.

[0013] Furthermore, the steering wheel assembly includes a steering part disposed on the chassis, a support part disposed on the steering part, and a first wheel assembly symmetrically disposed on the support part; the first wheel assembly includes a first traveling wheel and a first rail-clamping wheel symmetrically disposed on both sides of the support part, the first traveling wheel being able to roll on the track, the first rail-clamping wheel being able to roll on the side of the track, and constraining the steering wheel assembly on the track.

[0014] Furthermore, the steering unit includes a friction disc rotatably mounted on the chassis, and a connecting frame mounted on the friction disc; the connecting frame is mounted on the support unit.

[0015] Furthermore, the support portion includes a support shaft and a connecting pin disposed on the support shaft;

[0016] The steering part is provided with a connecting hole, and the connecting pin passes through the connecting hole to assemble the support shaft onto the steering part.

[0017] Furthermore, the electrical compartment is located in the middle of the second frame, and the two battery packs are respectively located on the second frame and on both sides of the electrical compartment.

[0018] Furthermore, the drive mechanism includes a bracket, a traction motor, a braking device, a drive wheel, a reducer, and a second wheel set; the traction motor is mounted on the bracket and is connected to the drive wheel via the reducer to drive the drive wheel to rotate; the braking device is mounted on the bracket and has a braking end that can abut against the drive wheel to prevent the drive wheel from rotating; the second wheel set includes a second traveling wheel and a second rail-clamping wheel symmetrically arranged on both sides of the bracket, the second traveling wheel can roll on the track, and the second rail-clamping wheel can roll on the side of the track, constraining the drive mechanism on the track.

[0019] Furthermore, the first frame and the third frame are each provided with a drive mechanism, and the second frame is provided with two drive mechanisms; viewed along the extension direction of the track, the drive mechanism on the first frame is located at the end of the first frame closer to the second frame, the drive mechanism on the third frame is located at the end of the third frame closer to the second frame, and the two drive mechanisms on the second frame are respectively located at both ends of the second frame.

[0020] Furthermore, the first frame has one drive mechanism, and the second frame has two drive mechanisms; viewed along the extension direction of the track, the drive mechanism on the first frame is located at one end of the first frame near the second frame, and the two drive mechanisms on the second frame are respectively located at both ends of the second frame.

[0021] Furthermore, the second frame is provided with two drive mechanisms; viewed along the extension direction of the track, the two drive mechanisms on the second frame are respectively located at both ends of the second frame.

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] The rack rail locomotive of this utility model adopts a configuration in which a first frame, a second frame, and a third frame are connected in sequence. The main driver's cab is located on the first frame, the battery pack and electrical room are located on the second frame, the co-driver's cab is located on the third frame, and the drive mechanism and steering wheel assembly are located on the chassis. This optimizes the arrangement of the various structures of the rack rail locomotive, making it more adaptable to roadways and facilitating its operation within roadways, thereby improving the overall quality of the rack rail locomotive.

[0024] Furthermore, the inclusion of steering wheel sets on both the first and second frames facilitates forward and reverse steering of the rack-and-rail locomotive while it travels along the track, simplifying the design and implementation. The arrangement of the steering unit, support unit, and first wheel sets results in a simple structure that facilitates steering operations. The first traveling wheel and first rail-clamping wheel enhance the steering and operation of the rack-and-rail locomotive and prevent derailment of the steering wheel sets, further facilitating design implementation. The friction disc facilitates steering operations, and the connecting frame allows for easy placement of the steering unit on the support unit, again simplifying the design and implementation. The support shaft and connecting pins facilitate the installation and placement of the steering unit on the support unit, aiding in maintenance and installation, and further simplifying the design and implementation.

[0025] Furthermore, by arranging the electrical compartment in the middle of the second frame and placing battery packs on both sides of the electrical compartment, space is saved, and electrical connection between the battery packs and the electrical compartment is facilitated, thus simplifying design and implementation. The bracket arrangement facilitates the placement of the traction motor, braking device, and second wheel set. The braking device effectively prevents the drive wheels from rotating, thus braking the rack-and-rail locomotive. The second wheel set facilitates the rack-and-rail locomotive's operation on the track, and the second rail-clamping wheel helps prevent derailment. The structure is simple and easy to design and implement. By placing one drive mechanism on each of the first and third frames, and two drive mechanisms on the second frame, a four-wheel drive layout is possible, which helps adapt to heavy-load transportation. Alternatively, by placing one drive mechanism on the first frame and two drive mechanisms on the second frame, a three-wheel drive layout is possible, which also helps adapt to heavy-load transportation and facilitates design and implementation. By setting two drive mechanisms on the second frame, a two-wheel drive layout can be easily realized. The fact that the two drive mechanisms are located on the second frame also facilitates the electrical connection between the battery pack and the electrical compartment and the drive mechanism. The structure is simple and easy to design and implement. Attached Figure Description

[0026] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0027] Figure 1 This is a schematic diagram of the four-wheel drive structure of the rack rail locomotive described in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the three-drive structure of the rack rail locomotive described in this embodiment of the utility model;

[0029] Figure 3 This is a schematic diagram of the two-drive structure of the rack rail locomotive described in this embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram of the drive mechanism of the rack rail locomotive described in an embodiment of the present utility model;

[0031] Figure 5 This is a schematic diagram of the steering wheel assembly of the rack rail locomotive described in an embodiment of the present invention;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Main driver's cab; 2. Co-driver's cab; 3. Hydraulic compartment; 4. Battery pack; 5. Electrical compartment;

[0034] 6. Steering wheel assembly;

[0035] 601. Steering unit; 602. Support unit; 603. First wheel assembly;

[0036] 6011 Friction disc; 6012 Connecting frame; 6021 Support shaft; 6022 Connecting pin; 6031 First traveling wheel; 6032 First rail-mounted wheel;

[0037] 7. Drive mechanism;

[0038] 701. Brake support; 702. Traction motor; 703. Braking device; 704. Drive wheel; 705. Reducer; 706. Second wheel set;

[0039] 7061, Second traveling wheel; 7062, Second rail-mounted wheel;

[0040] 8. Chassis;

[0041] 801. First frame; 802. Second frame; 803. Third frame. Detailed Implementation

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Taking the rack rail clamping locomotive described in this utility model as an example, the directional terms used in the embodiments, such as "up," "down," "left," "right," "front," and "rear," are defined based on the rack rail clamping locomotive's vertical direction (also known as the height direction), horizontal direction (also known as the width direction), and front-back direction (also known as the length direction). "Inner" and "outer" are defined based on the outline of the corresponding components. For example, "inner" and "outer" are defined based on the outline of the rack rail clamping locomotive. The side of the rack rail clamping locomotive outline closer to the middle of the rack rail clamping locomotive is "inner," and the opposite side is "outer."

[0045] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0046] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] Example 1

[0048] This embodiment relates to a rack rail locomotive, which aims to improve the service quality of the rack rail locomotive by optimizing its structural layout.

[0049] The rack rail locomotive in this embodiment can be used as an auxiliary transportation device in transportation scenarios where rack rails are laid, such as underground mines and mountain rail transportation.

[0050] In terms of overall structure, such as Figures 1 to 5 As shown, the rack rail locomotive in this embodiment includes a main driver's cab 1, a co-driver's cab 2, a hydraulic chamber 3, a battery pack 4, an electrical chamber 5, a drive mechanism 7, a steering wheel set 6, and a chassis 8.

[0051] The drive mechanism 7 and the steering wheel assembly 6 are both mounted on the chassis 8. The chassis 8 includes a first frame 801, a second frame 802 and a third frame 803 connected in sequence. The main driver's cab 1 is mounted on the first frame 801, the battery pack 4 and the electrical room 5 are mounted on the second frame 802, and the co-driver's cab 2 is mounted on the third frame 803. The drive mechanism 7 is electrically connected to the battery pack 4 to drive the rack rail locomotive to move on the track. Two hydraulic chambers 3 are mounted on the first frame 801 and the third frame 803.

[0052] As described above, the rack rail locomotive in this embodiment adopts a configuration in which the first frame 801, the second frame 802, and the third frame 803 are connected in sequence. The main driver's cab 1 is arranged on the first frame 801, the battery pack 4 and the electrical room 5 are arranged on the second frame 802, the co-driver's cab 2 is arranged on the third frame 803, and the drive mechanism 7 and the steering wheel set 6 are arranged on the chassis 8. This optimizes the arrangement of the rack rail locomotive's various structures, making it easier to adapt to roadways and facilitate the operation of the rack rail locomotive in roadways, thereby improving the service quality of the rack rail locomotive.

[0053] In this embodiment, the main driver's cab 1 and a hydraulic chamber 3 are jointly mounted on the first frame 801, and the co-driver's cab 2 and another hydraulic chamber 3 are jointly mounted on the third frame 803. The first frame 801, the second frame 802, and the third frame 803 are connected in sequence by a pull rod and a chain. The main driver's cab 1 and the co-driver's cab 2 provide operating spaces for the driver and both include seats, displays, control boxes, and other equipment required for operation. In this embodiment, the operating equipment in the main driver's cab 1 and the co-driver's cab 2 can be, for example, the operating equipment known to those skilled in the art for the use of main driver's cab 1 and co-driver's cab 2, and will not be described in detail in this embodiment.

[0054] Specifically, in this embodiment, as an exemplary structure, combined with Figures 1 to 3 As shown, in order to facilitate the turning of the rack rail locomotive in both forward and backward directions, the rack rail locomotive in this embodiment includes two steering wheel sets 6, which are respectively mounted on the first frame 801 and the second frame 802. By providing steering wheel sets 6 on both the first frame 801 and the second frame 802, it is convenient for the rack rail locomotive to turn forward and backward when running along the track, which is beneficial to the design and implementation.

[0055] In more detail, combined Figure 4 As shown, the steering wheel assembly 6 in this embodiment includes a steering part 601 mounted on the chassis 8, a support part 602 mounted on the steering part 601, and a first wheel assembly 603 symmetrically mounted on the support part 602. The first wheel assembly 603 includes first traveling wheels 6031 and first rail-clamping wheels 6032 symmetrically mounted on both sides of the support part 602. The first traveling wheels 6031 can roll on the track, and the first rail-clamping wheels 6032 can roll on the side of the track, thus constraining the steering wheel assembly 6 to the track. The arrangement of the steering part 601, support part 602, and first wheel assembly 603 results in a simple structure that facilitates steering operations. The arrangement of the first traveling wheels 6031 and first rail-clamping wheels 6032 facilitates the steering and operation of the rack rail locomotive and prevents the steering wheel assembly 6 from derailing, thus simplifying design and implementation.

[0056] To better arrange the steering unit 601, the steering unit 601 of the rack rail locomotive in this embodiment includes a friction disc 6011 rotatably mounted on the chassis 8, and a connecting frame 6012 mounted on the friction disc 6011. The connecting frame 6012 is mounted on the support unit 602. The setting of the friction disc 6011 facilitates steering operation, and the setting of the connecting frame 6012 facilitates the arrangement of the steering unit 601 on the support unit 602, which is beneficial to design and implementation.

[0057] To facilitate the connection between the support part 602 and the steering part 601, the support part 602 of the rack rail locomotive in this embodiment includes a support shaft 6021 and a connecting pin 6022 provided on the support shaft 6021. The steering part 601 is provided with a connecting hole, and the connecting pin 6022 passes through the connecting hole to assemble the support shaft 6021 onto the steering part 601. The cooperation between the support shaft 6021 and the connecting pin 6022 facilitates the installation and arrangement of the steering part 601 on the support part 602, which is helpful for maintenance and installation and facilitates design and implementation.

[0058] To improve the range of rack-and-pinion locomotives and optimize their layout, in conjunction with... Figures 1 to 3 As shown, in this embodiment, the electrical compartment 5 of the rack rail locomotive is located in the middle of the second frame 802, and two battery packs 4 are respectively located on both sides of the electrical compartment 5 and on the second frame 802. By arranging the electrical compartment 5 in the middle of the second frame 802 and arranging the battery packs 4 on both sides of the electrical compartment 5, it is beneficial to save layout space and facilitate the electrical connection between the battery packs 4 and the electrical compartment 5, which is beneficial to design and implementation. The battery packs 4 of the rack rail locomotive in this embodiment can be, for example, explosion-proof lithium batteries.

[0059] Combination Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, the rack rail locomotive is driven along the track by the drive mechanism 7. The drive mechanism 7 in this embodiment includes a bracket 701, a traction motor 702, a braking device 703, a drive wheel 704, a reducer 705, and a second wheel set 706. The traction motor 702 is mounted on the bracket 701 and is connected to the drive wheel 704 via the reducer 705 to drive the drive wheel 704 to rotate. The braking device 703 is mounted on the bracket 701 and has a braking end that can abut against the drive wheel 704 to prevent the drive wheel 704 from rotating. The second wheel set 706 includes wheels symmetrically arranged on both sides of the support portion 602. The second traveling wheel 7061 and the second rail-clamping wheel 7062 are designed to roll on the track and roll on the side of the track, thus securing the steering wheel assembly 6 to the track. The bracket 701 facilitates the arrangement of the traction motor 702, the braking device 703, and the second wheel assembly 706. The braking device 703 helps to prevent the drive wheel 704 from rotating to brake the rack rail locomotive. The second wheel assembly 706 facilitates the operation of the rack rail locomotive on the track, and the second rail-clamping wheel 7062 helps to prevent derailment. The structure is simple and easy to design and implement.

[0060] To better adapt to different drive layout requirements, combined with Figures 1 to 3As shown, the rack rail locomotive in this embodiment can be configured in four-wheel drive, three-wheel drive, or two-wheel drive configurations to adapt to different load requirements. Of course, in this embodiment, the steering wheel sets 6 are always respectively arranged on the first frame 801 and the third frame 803 to facilitate steering of the rack rail locomotive when moving forward and backward.

[0061] Specifically, in combination Figure 1 As shown, when the rack rail locomotive in this embodiment adopts a four-wheel drive arrangement, a drive mechanism 7 is provided on the first frame 801 and the third frame 803 respectively, and two drive mechanisms 7 are provided on the second frame 802. Looking along the track extension direction, the drive mechanism 7 on the first frame 801 is located at the end of the first frame 801 near the second frame 802, the drive mechanism 7 on the third frame 803 is located at the end of the third frame 803 near the second frame 802, and the two drive mechanisms 7 on the second frame 802 are respectively located at both ends of the second frame 802. By providing one drive mechanism 7 on each of the first frame 801 and the third frame 803, and providing two drive mechanisms 7 on the second frame 802, it is beneficial to realize a four-wheel drive layout, which helps to adapt to heavy load transportation conditions.

[0062] In addition, combined Figure 2 As shown, in this embodiment, when the rack rail locomotive adopts a three-drive layout, a drive mechanism 7 is provided on the first frame 801 and two drive mechanisms 7 are provided on the second frame 802. Looking along the track extension direction, the drive mechanism 7 on the first frame 801 is located at one end of the first frame 801 near the second frame 802, and the two drive mechanisms 7 on the second frame 802 are respectively located at both ends of the second frame 802. By setting one drive mechanism 7 on the first frame 801 and two drive mechanisms 7 on the second frame 802, it is easy to realize a three-drive layout, which is conducive to adapting to transportation situations with larger loads and facilitates design and implementation.

[0063] In addition, combined Figure 3 As shown, when the rack rail locomotive in this embodiment adopts a two-drive layout, two drive mechanisms 7 are provided on the second frame 802. Looking along the track extension direction, the two drive mechanisms 7 on the second frame 802 are respectively located at both ends of the second frame 802. By setting two drive mechanisms 7 on the second frame 802, it is easy to realize the two-drive layout. Moreover, the two drive mechanisms 7 are located on the second frame 802, which facilitates the electrical connection between the battery pack 4 and the electrical room 5 and the drive mechanism 7. The structure is simple and easy to design and implement.

[0064] In this embodiment, the rack rail locomotive needs to be configured with four-wheel drive, three-wheel drive or two-wheel drive according to the requirements of the roadway and the transportation requirements. When running, the traction motor 702 drives the reducer 705 to rotate, which drives the drive wheel 704 to rotate. The drive wheel 704 meshes with the rack rail, thereby realizing the operation of the rack rail locomotive on the track.

[0065] The rack rail locomotive of this embodiment can be used as an auxiliary transportation equipment in transportation scenarios where rack rails are laid, such as underground mines and mountain rail transportation. By optimizing the layout of the various structures of the rack rail locomotive, it is easier to adapt to roadways and facilitate the operation of the rack rail locomotive in roadways, thereby improving the service quality of the rack rail locomotive.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rack-and-pinion locomotive, characterized in that: It includes the main driver's cab (1), the co-driver's cab (2), the hydraulic chamber (3), the battery pack (4), the electrical chamber (5), the steering wheel assembly (6), the drive mechanism (7), and the chassis (8); The drive mechanism (7) and the steering wheel assembly (6) are both mounted on the chassis (8); The chassis (8) includes a first frame (801), a second frame (802) and a third frame (803) connected in sequence. The main driver's cab (1) is located on the first frame (801), the battery pack (4) and the electrical room (5) are located on the second frame (802), and the co-driver's cab (2) is located on the third frame (803). The drive mechanism (7) is electrically connected to the battery pack (4) to drive the rack rail locomotive to move on the track; The hydraulic chamber (3) is located on the first frame (801) and / or the third frame (803).

2. The rack-and-rail locomotive according to claim 1, characterized in that: The steering wheel assembly (6) includes two steering wheel assemblies (6) respectively mounted on the first frame (801) and on the second frame (802).

3. The rack-and-rail locomotive according to claim 2, characterized in that: The steering wheel assembly (6) includes a steering part (601) disposed on the chassis (8), a support part (602) disposed on the steering part (601), and a first wheel assembly (603) symmetrically disposed on the support part (602); The first wheel set (603) includes a first traveling wheel (6031) and a first rail-clamping wheel (6032) symmetrically arranged on both sides of the support (602). The first traveling wheel (6031) can roll on the track, and the first rail-clamping wheel (6032) can roll on the side of the track and constrain the steering wheel set (6) on the track.

4. The rack-and-rail locomotive according to claim 3, characterized in that: The steering unit (601) includes a friction disc (6011) rotatably mounted on the chassis (8) and a connecting frame (6012) mounted on the friction disc (6011); The connecting frame (6012) is mounted on the support (602).

5. The rack-and-rail locomotive according to claim 3, characterized in that: The support portion (602) includes a support shaft (6021) and a connecting pin (6022) disposed on the support shaft (6021); The steering part (601) is provided with a connecting hole, and the connecting pin (6022) passes through the connecting hole to assemble the support shaft (6021) onto the steering part (601).

6. The rack-and-rail locomotive according to claim 1, characterized in that: The electrical compartment (5) is located in the middle of the second frame (802), and the two battery packs (4) are respectively located on the second frame (802) and on both sides of the electrical compartment (5).

7. The rack-rail locomotive according to any one of claims 1-6, characterized in that: The drive mechanism (7) includes a bracket (701), a traction motor (702), a braking device (703), a drive wheel (704), a reducer (705), and a second wheel set (706); The traction motor (702) is mounted on the bracket (701) and is connected to the drive wheel (704) via the reducer (705) to drive the drive wheel (704) to rotate. The braking device (703) is mounted on the bracket (701) and has a braking end that can abut against the drive wheel (704) to prevent the drive wheel (704) from rotating. The second wheel set (706) includes a second traveling wheel (7061) and a second rail-clamping wheel (7062) symmetrically arranged on both sides of the bracket (701). The second traveling wheel (7061) can roll on the track, and the second rail-clamping wheel (7062) can roll on the side of the track and constrain the drive mechanism (7) on the track.

8. The rack-and-rail locomotive according to claim 7, characterized in that: The first frame (801) and the third frame (803) are each provided with a drive mechanism (7), and the second frame (802) is provided with two drive mechanisms (7); Looking along the direction of the track extension, the drive mechanism (7) on the first frame (801) is located at one end of the first frame (801) near the second frame (802), the drive mechanism (7) on the third frame (803) is located at one end of the third frame (803) near the second frame (802), and the two drive mechanisms (7) on the second frame (802) are respectively located at both ends of the second frame (802).

9. The rack-and-rail locomotive according to claim 7, characterized in that: The first frame (801) is provided with a drive mechanism (7), and the second frame (802) is provided with two drive mechanisms (7); Looking along the direction of the track extension, the drive mechanism (7) on the first frame (801) is located at one end of the first frame (801) near the second frame (802), and the two drive mechanisms (7) on the second frame (802) are respectively located at both ends of the second frame (802).

10. The rack-and-rail locomotive according to claim 7, characterized in that: The second frame (802) is equipped with two drive mechanisms (7); Looking along the direction of the track extension, the two drive mechanisms (7) on the second frame (802) are respectively located at both ends of the second frame (802).

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