Mechanical rail control system based on gear rack transmission under fault dislocation

Abstract

The present invention provides a mechanical track control system based on gear rack transmission under fault dislocation. Through this system, after the fault dislocation occurs, the tunnel is deformed, the lining is dislocated, and the roadbed is driven to move. The lining outside the fault dislocation zone that is not affected by the dislocation is used as a reference (immovable lining). Through gear transmission, on the one hand, the bevel gear is driven to rotate, so that the lead screw is rotated to achieve track plate dislocation compensation (equal to the dislocation displacement); on the other hand, by setting a specific transmission ratio, the absolute displacement of the rack does not change, which is used as the reference for the next lining to ensure that the track plate is finally restored to the initial position during the real-time adjustment process, and the relative position of the track remains unchanged, so as to achieve the purpose of safe operation of the train.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel engineering construction, and in particular relates to a track mechanical control system based on gear rack transmission under fault dislocation. Background Art

[0002] It is inevitable for a tunnel to cross an active fault. As far as high-speed railway tunnels are concerned, fault movement has a significant impact on the tunnel and the facilities inside the tunnel. Since trains have very high requirements for track deformation, relevant measures need to be adopted when the tunnel crosses an active fault to achieve real-time adjustment of the track structure deformation.

[0003] That is, there is still the problem of track unevenness caused by tunnel slippage under the action of fault slippage, which in turn poses a safety risk to train operation;

[0004] It can be seen that how to optimize the reset measures of train tracks after being disturbed and misaligned, thereby improving the safety of train travel, is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The present invention provides a rail mechanical control system based on gear rack transmission under fault dislocation to at least solve the above technical problems;

[0006] In order to solve the above problems, the first aspect of the present invention provides a mechanical track control system based on gear rack transmission under fault dislocation, the track includes several sections of movable lining and fixed lining, the control system includes: an automatic adjustment device arranged between the movable lining and the track plate, the automatic adjustment device includes: a gear group arranged on each section of the movable lining, and a rack connected to the fixed lining, the gear group is meshed with the rack; the gear group is also transmitted by a bevel gear transmission mechanism; the bevel gear transmission mechanism is connected to the bottom of the track plate; wherein, when dislocation occurs, the gear group and the rack undergo a first meshing transmission, and drive the bevel gear transmission mechanism to undergo a second meshing transmission, the second meshing transmission causes the bevel gear transmission mechanism to displace relative to the track plate, and the displacement of the track plate is 0.

[0007] In the first aspect, the bevel gear transmission mechanism includes: a large bevel gear, a small gear is coaxially arranged on the axis of the large bevel gear, and the small gear is meshed with the gear set; a push rod, the two ends of the push rod are correspondingly connected to the opposite ends of the movable lining, a small bevel gear is fixed on the push rod, and the small bevel gear is meshed with the large bevel gear for transmission, and a transmission nut is also arranged on the push rod, and the transmission nut is adapted to the thread on the push rod, and the outer side wall of the transmission nut is connected to the track plate.

[0008] In the first aspect, a transmission ratio between the gear and the rack is 1:1.

[0009] In the first aspect, a latch is provided at the position where the push rod is connected to the movable lining, and the push rod can rotate freely relative to the latch.

[0010] In the first aspect, the movable lining is arranged on a track foundation by a pair of slide rails; the movable lining can slide freely relative to the slide rails.

[0011] In the first aspect, the control system further comprises a pin; the pin is arranged on the movable lining, and the arrangement direction of the pin is consistent with the arrangement direction of the slide rail.

[0012] In the first aspect, the push rod is a lead screw.

[0013] In the first aspect, the pitch of the thread on the push rod is a fixed pitch.

[0014] In the first aspect, the pitch of the thread on the push rod is a gradual pitch.

[0015] Beneficial effects: The present invention proposes a mechanical track control system based on gear rack transmission under fault dislocation. When the track displaces, the automatic adjustment device is used to ensure that the track does not move when the movable lining moves. Specifically, a gear set is arranged on each movable lining, and the gear set is meshed with a rack connected to the fixed lining. The gear set is further transmitted to a bevel gear transmission mechanism, and the bevel gear transmission mechanism is connected to the track plate. When dislocation occurs, the gear set and the rack undergo a first meshing transmission, and drive the bevel gear transmission mechanism to undergo a second meshing transmission. The second meshing transmission causes the bevel gear transmission mechanism to move relative to the track plate, so that the track plate does not move, thereby ensuring the smooth passage and safety of trains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a mechanical adaptive control device for track under fault displacement provided in the first embodiment of the present invention Figure 1 ;

[0018] Figure 2 A schematic diagram of the structure of a mechanical adaptive control device for track under fault displacement provided in the first embodiment of the present invention Figure 2;

[0019] Figure 3 A schematic diagram of the structure of a mechanical adaptive control device for track under fault displacement provided in the first embodiment of the present invention Figure 3 ;

[0020] Figure 4 A schematic diagram of the structure of a mechanical adaptive control device for track under fault displacement provided in the first embodiment of the present invention Figure 4 .

[0021] Numbers in the figure:

[0022] 1- Movable lining;

[0023] 2-bevel gear transmission mechanism; 201-large bevel gear; 202-push rod; 203-transmission nut; 204-small bevel gear;

[0024] 3- latch;

[0025] 4-Track plate;

[0026] 5-track;

[0027] 6- Slide rail;

[0028] 7- Gear set;

[0029] 8- Rack. DETAILED DESCRIPTION

[0030] The technical scheme of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0031] At the same time, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the present invention.

[0032] Embodiment 1:

[0033] like Figure 1-4As shown, the first embodiment provides a mechanical rail control system based on gear rack 8 transmission under fault dislocation, the rail includes several sections of movable lining 1 and fixed lining, and the control system includes: an automatic adjustment device arranged between the movable lining 1 and the track plate 4;

[0034] Specifically, the automatic adjustment device includes: a gear set 7 arranged on each section of the movable lining 1, and a rack 8 arranged and connected to the stationary lining, the gear set 7 is meshed with the rack 8; the gear set 7 is also transmitted with a bevel gear transmission mechanism 2; the bevel gear transmission mechanism 2 is connected to the bottom of the track plate 4; wherein, when a misalignment occurs, the gear set 7 and the rack 8 undergo a first meshing transmission, and drive the bevel gear transmission mechanism 2 to undergo a second meshing transmission, and the second meshing transmission causes the bevel gear transmission mechanism 2 to displace relative to the track plate 4, and the displacement of the track plate 4 is 0.

[0035] Specifically, the mechanical track control system based on the gear rack 8 transmission under fault displacement provided in the first embodiment, when the track is displaced, the automatic adjustment device is used to prevent the track from being displaced when the movable lining 1 is displaced; specifically, the gear set 7 is provided on each movable lining 1, and the gear set 7 is meshed with the rack 8 connected to the fixed lining; the gear set 7 is also transmitted with a bevel gear transmission mechanism 2, and the bevel gear transmission mechanism 2 is connected to the track plate 4. When the displacement occurs, the gear set 7 and the rack 8 are meshed for the first time, and the bevel gear transmission mechanism 2 is driven to be meshed for the second time, and the second meshing transmission causes the bevel gear transmission mechanism 2 to be displaced relative to the track plate 4, so that the track plate 4 does not displace, thereby ensuring the smoothness and safety of the train passage. The track 5 is provided on the track plate 4.

[0036] It should be noted that the stationary lining is a lining structure that will not shift within a certain distance;

[0037] In some possible embodiments, the bevel gear transmission mechanism 2 includes: a large bevel gear 201, a small gear is coaxially arranged on the axis of the large bevel gear 201, and the small gear is meshed with the gear set 7; a push rod 202, the two ends of the push rod 202 are correspondingly connected to the opposite ends of the movable lining 1, a small bevel gear 204 is fixed on the push rod 202, the small bevel gear 204 is meshed with the large bevel gear 201 for transmission, and a transmission nut 203 is also provided on the push rod 202, the transmission nut 203 is adapted to the thread on the push rod 202, and the outer wall of the transmission nut 203 is connected to the track plate 4.

[0038] This arrangement ensures that when the large bevel gear 201 is engaged and driven, the rotational force can be transmitted to the push rod 202 through the small bevel gear 204, thereby causing the push rod 202 to be driven, so that the two ends of the push rod 202 rotate relative to the movable lining 1, and at the same time, the thread on the push rod 202 and the transmission nut 203 are synchronously driven, so that the track plate 4 always remains stationary in the original position without displacement, thereby ensuring the safety and stability of the train during passage.

[0039] In the technical solution of the above-mentioned embodiment 1, regarding the transmission ratio setting of the gear set 7 and the rack 8, this embodiment 1 proposes an implementation method, which is: the transmission ratio of the gear set 7 and the rack 8 is 1:1.

[0040] In the technical solution of the first embodiment, a latch 3 is provided at the position where the push rod 202 is connected to the movable lining 1 , and the push rod 202 can rotate freely relative to the latch 3 .

[0041] In this way, the push rod 202 is restricted within a pair of latch pins 3 and can rotate freely along the axis of the latch pins 3.

[0042] In some possible implementations, the movable lining 1 is arranged on a track foundation via a pair of slide rails 6 ; the movable lining 1 can slide freely relative to the slide rails 6 .

[0043] In some possible implementations, the control system further includes a pin; the pin is disposed on the movable lining 1 , and the orientation of the pin is consistent with the orientation of the slide rail 6 .

[0044] Specifically, for the push rod 202, this embodiment 1 proposes an implementation method, where the push rod 202 is a lead screw.

[0045] Furthermore, the pitch of the thread on the push rod 202 is a fixed pitch.

[0046] Specifically, for the push rod 202, this first embodiment further proposes an implementation method, in which the pitch on the push rod is a gradual pitch.

[0047] Since the second embodiment and the first embodiment are embodiments of the same inventive concept and some of their structures are exactly the same, the structures in the second embodiment that are substantially the same as those in the first embodiment will not be elaborated in detail. For the parts not elaborated in detail, please refer to the first embodiment.

[0048] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. They should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

[0049] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A mechanical rail control system based on gear rack transmission under fault dislocation, wherein the rail includes several sections of movable lining and fixed lining, characterized in that: The control system comprises: an automatic adjustment device arranged between the movable lining and the track plate, the automatic adjustment device comprises: a gear set arranged on each section of the movable lining, and a rack connected to the fixed lining, the gear set meshing with the rack; the gear set is also transmitted by a bevel gear transmission mechanism; the bevel gear transmission mechanism is connected to the bottom of the track plate; Wherein, when the displacement occurs, the gear set and the rack undergo a first meshing transmission, and drive the bevel gear transmission mechanism to undergo a second meshing transmission, and the second meshing transmission causes the bevel gear transmission mechanism to be displaced relative to the track plate; The bevel gear transmission mechanism comprises: A large bevel gear, a small gear is coaxially arranged on the axis of the large bevel gear, and the small gear is meshed with the gear set; A push rod, both ends of which are correspondingly connected to the opposite ends of the movable lining, a small bevel gear is fixed on the push rod, the small bevel gear is meshed with the large bevel gear for transmission, and a transmission nut is also provided on the push rod, the transmission nut is adapted to the thread on the push rod, and the outer side wall of the transmission nut is connected to the track plate.

2. The rail mechanical control system based on gear rack transmission under fault dislocation according to claim 1 is characterized by: The transmission ratio between the gear set and the rack is 1:

1.

3. The rail mechanical control system based on gear rack transmission under fault dislocation according to claim 1 is characterized by: A latch is provided at the position where the push rod is connected to the movable lining, and the push rod can rotate freely relative to the latch.

4. The rail mechanical control system based on gear rack transmission under fault dislocation according to claim 1 is characterized by: The movable lining is arranged on a track base through a pair of slide rails; the movable lining can slide freely relative to the slide rails.

5. The rail mechanical control system based on gear rack transmission under fault dislocation according to claim 4 is characterized in that: The control system also includes a pin; The pin is arranged on the movable lining, and the arrangement direction is consistent with the arrangement direction of the slide rail.

6. The rail mechanical control system based on gear rack transmission under fault dislocation according to claim 1 is characterized in that: The push rod is a lead screw.

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