CN112096798A

CN112096798A - Track slab adjusting transmission case

Info

Publication number: CN112096798A
Application number: CN202010713077.9A
Authority: CN
Inventors: 张伟; 黄崇富; 林雪峰; 李�诚; 傅剑锋; 王家胜
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2020-12-18
Anticipated expiration: 2040-07-22
Also published as: CN112096798B

Abstract

The invention discloses a track slab adjusting transmission case which comprises a case body, a driving mechanism, a first output shaft, a second output shaft, a third output shaft and a shifting fork mechanism, wherein the case body is provided with a first transmission mechanism and a second transmission mechanism; the driving mechanism comprises a driving motor, a driving shaft, a driving gear, a first driven gear and a second driven gear, wherein the driving shaft is provided with a first driving medium gear, the first driven gear is provided with a second driving medium gear, and the second driven gear is provided with a third driving medium gear; a first driven gear is arranged on the first output shaft; a second driven intermediate gear is arranged on the second output shaft; a third driven intermediate gear is arranged on the third output shaft; and a shifting fork mechanism is arranged between the driving shaft and the first output shaft, between the first driven gear and the second output shaft, and between the second driven gear and the third output shaft. The shifting fork mechanism is used for realizing that one driving motor respectively transmits three output shafts, so that the number of the driving motors, electric control equipment and systems is reduced, the investment cost is reduced, a large amount of construction space is saved, and the electric control is relatively simple.

Description

Track slab adjusting transmission case

Technical Field

The invention belongs to the technical field of rail installation, and particularly relates to a rail plate adjusting transmission case.

Background

With the rapid development of domestic high-speed railways, the demand for a fine adjustment measuring system of a slab track is increasing day by day, and no matter what type and specification of the slab ballastless track, the shape and performance of a specific measuring frame are different, but the precise measurement and adjustment and positioning principles of the track slab are basically the same. At present, the track slab of a high-speed rail system mostly adopts a CRTS III type track slab, and the track slab becomes a main roadbed of a newly-built high-speed rail circuit. The CRTS III type track slab is paved mechanically, but the pavement precision requirement of the track slab is very high, the precision requirements of upper and lower, left and right, front and back pavement are less than or equal to 3mm, and the weight of a precast slab with the size of 2.5m multiplied by 5m of the CRTS III track slab reaches about 10 tons, so that the adjustment is difficult.

At present, the regulation of the CRTS III track plate is realized by rough regulation through mechanical hoisting, and then the track plate is driven by manpower or mechanical equipment to do micro-motion in the horizontal direction and the vertical direction so as to realize fine regulation, one track plate is finely regulated by manpower, 5 workers need to operate for 2-3 hours at the same time, and the labor and the time are wasted; the fine adjustment is carried out by depending on mechanical equipment, so that the working efficiency can be greatly improved, and a large amount of time and labor can be saved.

When relying on mechanical equipment fine tuning, all need to set up mechanical equipment in four corners of III track boards of CRTS, every mechanical equipment all need to set up driving motor in the XYZ direction of III track boards of CRTS, and every mechanical equipment all needs to be provided with three driving motor promptly, and every motor all needs to be equipped with automatically controlled equipment and system, need to be equipped with three sets of automatically controlled equipment and system promptly, and investment cost is high, has occupied a large amount of construction space, and electrical control is also fairly complicated.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a track slab adjusting transmission case to solve the problems that the existing mechanical equipment for precisely adjusting each CRTS III track slab is provided with three driving motors and three sets of electric control equipment and systems, so that the investment cost is high, a large amount of construction space is occupied, and the electric control is quite complicated.

In order to solve the technical problem, the technical scheme adopted by the invention is as follows:

a track plate adjustment gear box comprising:

a box body;

the driving mechanism comprises a driving motor, a driving shaft, a driving gear, a first driven gear and a second driven gear, and the driving motor is fixedly arranged on one outer side surface of the box body; the driving shaft is rotatably arranged in the box body, one end of the driving shaft is connected with the driving motor, and the other end of the driving shaft is provided with a first driving intervening tooth; the driving gear is fixedly sleeved on the driving shaft; the first driven gear and the second driven gear are rotatably arranged in the box body, are positioned at two sides of the driving shaft and are in meshed transmission with the driving gear, a second driving medium tooth is arranged on the first driven gear, and a third driving medium tooth is arranged on the second driven gear;

the first output shaft is rotatably arranged in the box body and is coaxial with the driving shaft, one end of the first output shaft is provided with a first driven medium tooth with the same specification as the first driving medium tooth, and the other end of the first output shaft is an output end and extends out of the box body;

one end of the second output shaft is coaxially and rotatably arranged in the first driven gear, second driven medium teeth with the same specification as the second driving medium teeth are arranged on the second output shaft, the middle part of the second output shaft is rotatably arranged in the box body, and the other end of the second output shaft is an output end and extends out of the box body;

one end of the third output shaft is coaxially and rotatably arranged in the second driven gear, a third driven medium tooth with the same specification as the third driving medium tooth is arranged on the third output shaft, the middle part of the third output shaft is rotatably arranged in the box body, and the other end of the third output shaft is an output end and extends out of the box body; and

the shifting fork mechanism is arranged on the box body, and the shifting fork mechanism is arranged between the driving shaft and the first output shaft and can enable the first driving intermediate gear and the first driven intermediate gear to be connected and disconnected; the shifting fork mechanism is arranged between the first driven gear and the second output shaft, so that the second driving intermediate gear and the second driven intermediate gear can be connected and disconnected; and the shifting fork mechanism is arranged between the second driven gear and the third output shaft, so that the third driving medium gear and the third driven medium gear can be connected and disconnected.

The driving mechanism is connected with and disconnected from the first output shaft, the second output shaft and the third output shaft respectively through the shifting fork mechanism, the three output shafts are respectively driven through one driving motor, three driving motors do not need to be arranged for each mechanical device, three sets of electric control devices and systems do not need to be equipped, only one driving motor and one set of electric control device and system need to be arranged for each mechanical device, the investment cost is greatly reduced, a large amount of construction space is saved, and the electric control is relatively simple.

Furthermore, the shifting fork mechanism comprises a gear sleeve, a shifting block, a shifting fork arm and a shaft seat, wherein a circumferential surface of the gear sleeve is provided with a circumferential guide groove, and a circumferential inner ring of the gear sleeve is provided with inner teeth along the circumferential direction;

the gear sleeve is sleeved on the first driving medium gear and the first driven medium gear, the inner teeth are meshed with the first driving medium gear and the first driven medium gear, and the gear sleeve can axially slide to enable the inner teeth to be separated from the first driving medium gear;

the gear sleeve is sleeved on the second driving intervening gear and the second driven intervening gear, the inner teeth are meshed with the second driving intervening gear and the second driven intervening gear, and the gear sleeve can axially slide to enable the inner teeth to be separated from the second driving intervening gear;

the gear sleeve is sleeved on the third driving intervening gear and the third driven intervening gear, the inner teeth are meshed with the third driving intervening gear and the third driven intervening gear, and the gear sleeve can axially slide to enable the inner teeth to be separated from the third driving intervening gear;

the shifting block is connected with the gear sleeve in a sliding mode through the guide groove, the shifting block is hinged to one end of the shifting fork arm, a mounting hole is formed in the shaft seat, the middle of the shifting fork arm is connected with the shaft seat in a rotating mode through the mounting hole, and the shaft seat is fixedly arranged in the box body.

The shifting block is shifted through the shifting fork arm, the shifting block drives the gear sleeve to slide along the axial direction, so that the first driving medium gear and the first driven medium gear, the second driving medium gear and the second driven medium gear, and the third driving medium gear and the third driven medium gear are connected or disconnected, and the first output shaft, the second output shaft and the third output shaft are driven to rotate to output power.

Furthermore, the shifting fork arm comprises a connecting arm, a rotating shaft and a handle, two ends of the rotating shaft are rotatably connected with the box body through the shaft seat, one end of the connecting arm is fixedly connected with the rotating shaft, the other end of the connecting arm is hinged with the shifting block, one end of the handle is fixedly connected with the rotating shaft, and the other end of the handle extends out of the box body. The handle extends out of the box body so as to be held and operated by people.

Further, above-mentioned track board adjustment transmission case still includes tooth cover anti-skidding mechanism, tooth cover anti-skidding mechanism includes first elastic element and prevents changeing the subassembly, first elastic element is located in the mounting hole of axle bed and both ends respectively with the axle bed reaches the axis of rotation is connected, prevent changeing the subassembly and locate shift fork arm go up and with the axle bed is connected, thereby prevent changeing the subassembly and can prevent that the axis of rotation from rotating and prevent tooth cover endwise slip. The first elastic element can enable the rotating shaft to be always in a tightened state, the rotating shaft cannot shake due to vibration of the driving mechanism, and the anti-rotation assembly can enable the rotating shaft to be locked and cannot rotate when the gear sleeve is in two states of connection and disconnection, so that the gear sleeve is prevented from sliding axially.

Furthermore, the rotation-preventing assembly comprises a ratchet, a non-return pawl, a pawl seat, a second elastic element and a pawl telescopic member, the ratchet is arranged in the mounting hole of the shaft seat, one end of the non-return pawl is hinged with the pawl seat, the other end of the non-return pawl is meshed with the ratchet, two ends of the second elastic element are respectively connected with the non-return pawl and the pawl seat, the pawl seat is connected with the rotating shaft in a sliding manner, and the pawl telescopic member drives the pawl seat to slide relative to the rotating shaft. The ratchet and the non-return pawl are adopted for preventing rotation, the structure is reliable, the pawl telescopic component can enable the non-return pawl to be separated from the ratchet, and therefore the rotating shaft can rotate when the two states of connection and disconnection of the tooth sleeve are switched.

Furthermore, the pawl telescopic member comprises a third elastic element, a fixed seat, a fixed pulley, a steel wire rope and a connecting rod, wherein the fixed seat is fixedly arranged at one end of the rotating shaft; the pawl seat is connected with the fixed seat in a sliding way; two ends of the third elastic element are respectively connected with the pawl seat and the fixed seat; the fixed pulley is rotatably connected with the fixed seat; the rotating shaft is provided with a first through hole along the axial direction, the handle is provided with a second through hole along the axial direction, the first through hole is communicated with the second through hole, the connecting rod is arranged in the second through hole, and the middle part of the connecting rod is hinged with the handle; the steel wire rope penetrates through the first through hole, bypasses the fixed pulley, and is fixedly connected with one end of the connecting rod and the pawl seat at two ends respectively. The steel wire rope is arranged in a tightened state, and when the connecting rod is driven to rotate, the steel wire rope pulls the pawl seat to slide along the fixed seat, so that the non-return pawl is separated from the ratchet.

Furthermore, the other end of the connecting rod is provided with a handle, and the handle extends out of the handle. One end of the connecting rod of the pawl telescopic component is arranged on the handle and extends out of the handle, so that manual operation is facilitated.

Compared with the prior art, the invention has the beneficial effects that:

1. the driving mechanism is connected with and disconnected from the first output shaft, the second output shaft and the third output shaft respectively through the shifting fork mechanism, the three output shafts are respectively driven through one driving motor, three driving motors do not need to be arranged for each mechanical device, three sets of electric control devices and systems do not need to be equipped, only one driving motor and one set of electric control device and system need to be arranged for each mechanical device, the investment cost is greatly reduced, a large amount of construction space is saved, and the electric control is relatively simple.

2. Through setting up tooth cover anti-skidding mechanism to fork mechanism for the tooth cover remains stable and reliable throughout when connecting with two states of disconnection, and has reduced rocking of tooth cover.

3. The mechanism is flexible and reliable, and the applicability is strong.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a front view of the fork mechanism of the present invention;

FIG. 4 is a view from the P direction in FIG. 3;

FIG. 5 is a view B-B of FIG. 3;

FIG. 6 is a view C-C of FIG. 4;

fig. 7 is a view from D-D in fig. 4.

Reference numerals:

1-a box body;

2-driving mechanism, 21-driving motor, 22-driving shaft, 23-driving gear, 24-first driven gear, 25-second driven gear, 26-first driving intervening tooth, 26 a-first driven intervening tooth, 27-second driving intervening tooth, 27 a-second driven intervening tooth, 28-third driving intervening tooth and 28 a-third driven intervening tooth;

3-a first output shaft;

4-a second output shaft;

5-a third output shaft;

6-shifting fork mechanism, 61-gear sleeve, 62-shifting block, 63-shifting fork arm, 631-connecting arm, 632-rotating shaft, 632H-first through hole, 633-handle, 633H-second through hole and 64-shaft seat;

7-gear sleeve antiskid mechanism, 71-first elastic element, 72-anti-rotation component, 721-ratchet, 722-check pawl, 723-pawl seat, 724-second elastic element, 725-pawl telescopic component, 7251-third elastic element, 7252-fixed seat, 7253-fixed pulley, 7254-steel wire rope, 7255-connecting rod and 7256-grip.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, which indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or structures must have a specific orientation, be constructed in a specific orientation, and be operated, and thus are not to be construed as limiting the present invention.

Referring to fig. 1 and fig. 2, the track slab adjustment transmission box provided in this embodiment includes: the device comprises a box body 1, a driving mechanism 2, a first output shaft 3, a second output shaft 4, a third output shaft 5 and a shifting fork mechanism 6.

The box body 1 is of a cuboid structure and can be fixed on the ground or on special equipment fixed on the ground.

The driving mechanism 2 comprises a driving motor 21, a driving shaft 22, a driving gear 23, a first driven gear 24 and a second driven gear 25, and the driving motor 21 is fixedly arranged on one outer side surface of the box body 1; the driving shaft 22 is rotatably arranged in the box body 1, one end of the driving shaft 22 is connected with the driving motor 21, and the other end of the driving shaft is provided with a first driving intervening tooth 26; the driving gear 23 is fixedly sleeved on the driving shaft 22; the first driven gear 24 and the second driven gear 25 are rotatably disposed in the case 1, located on two sides of the driving shaft 22, and are in meshing transmission with the driving gear 23, the first driven gear 24 is provided with a second driving medium gear 27, and the second driven gear 25 is provided with a third driving medium gear 28. Both ends of the driving shaft 22 are rotatably disposed in the housing 1 through bearings, and the first driven gear 24 and the second driven gear 25 are rotatably disposed in the housing 1 through bearings. In the present embodiment, the driving motor 21 is a servo inverter motor in consideration of high control accuracy.

The first output shaft 3 is rotatably disposed in the case 1 and coaxial with the driving shaft 22, one end of the first output shaft is provided with a first driven intervening tooth 26a having the same specification as the first driving intervening tooth 26, and the other end of the first output shaft is an output end extending out of the case 1. Specifically, the first output shaft 3 is rotatably provided in the case 1 through a bearing.

One end of the second output shaft 4 is coaxially and rotatably arranged in the first driven gear 24, a second driven gear 27a with the same specification as the second driving gear 27 is arranged on the second output shaft 4, the middle part of the second output shaft 4 is rotatably arranged in the box body 1, and the other end of the second output shaft is an output end and extends out of the box body 1. Specifically, one end of the second output shaft 4 is coaxially and rotatably arranged in the first driven gear 24 through a bearing, and the middle part of the second output shaft 4 is rotatably arranged in the box body 1 through a bearing. The other end of the second output shaft 4 extends out of the box body 1.

One end of a third output shaft 5 is coaxially and rotatably arranged in the second driven gear 25, a third driven medium tooth 28a with the same specification as the third driving medium tooth 28 is arranged on the third output shaft 5, the middle part of the third output shaft 5 is rotatably arranged in the box body 1, and the other end of the third output shaft is an output end and extends out of the box body 1. Specifically, one end of the third output shaft 5 is coaxially and rotatably arranged in the second driven gear 25 through a bearing, and the middle part of the third output shaft 5 is rotatably arranged in the box body 1 through a bearing. The other end of the third output shaft 5 extends out of the box body 1.

Referring to fig. 3 and 4, the fork mechanism 6 is disposed on the box 1, and a fork mechanism 6 is disposed between the driving shaft 22 and the first output shaft 3 to connect and disconnect the first driving intervening teeth 26 and the first driven intervening teeth 26 a; a shifting fork mechanism 6 is arranged between the first driven gear 24 and the second output shaft 4, so that the second driving intermediate gear 27 and the second driven intermediate gear 27a can be connected and disconnected; a fork mechanism 6 is provided between the second driven gear 25 and the third output shaft 5, so that the third driving intermediate gear 28 and the third driven intermediate gear 28a can be connected and disconnected.

Specifically, the shifting fork mechanism 6 comprises a gear sleeve 61, a shifting block 62, a shifting fork arm 63 and a shaft seat 64, wherein a circumferential surface of the gear sleeve 61 is provided with a circumferential guide groove, and a circumferential inner ring of the gear sleeve 61 is provided with inner teeth along the circumferential direction; the gear sleeve 61 is sleeved on the first driving intervening tooth 26 and the first driven intervening tooth 26a, the inner teeth are meshed with the first driving intervening tooth 26 and the first driven intervening tooth 26a, and the gear sleeve 61 can axially slide to enable the inner teeth to be separated from the first driving intervening tooth 26; the gear sleeve 61 is sleeved on the second driving intervening tooth 27 and the second driven intervening tooth 27a, the internal teeth are meshed with the second driving intervening tooth 27 and the second driven intervening tooth 27a, and the gear sleeve 61 can axially slide to enable the internal teeth to be separated from the second driving intervening tooth 27; the gear sleeve 61 is sleeved on the third driving intervening tooth 28 and the third driven intervening tooth 28a, the inner teeth are meshed with the third driving intervening tooth 28 and the third driven intervening tooth 28a, and the gear sleeve 61 can axially slide to enable the inner teeth to be separated from the third driving intervening tooth 28; the shifting block 62 is slidably connected with the gear sleeve 61 through a guide groove, the shifting block 62 is hinged with one end of a shifting fork arm 63, a mounting hole is formed in a shaft seat 64, the middle of the shifting fork arm 63 is rotatably connected with the shaft seat 64 through the mounting hole, and the shaft seat 64 is fixedly arranged in the box body 1. The shifting block 62 is shifted by the shifting fork arm 63, and the shifting block 62 drives the gear sleeve 61 to slide along the axial direction, so that the first driving intervening tooth 26 and the first driven intervening tooth 26a, the second driving intervening tooth 27 and the second driven intervening tooth 27a, and the third driving intervening tooth 28 and the third driven intervening tooth 28a are connected or disconnected, and the first output shaft 3, the second output shaft 4 and the third output shaft 5 are driven to rotate to output power.

Preferably, the shifting fork arm 63 includes a connecting arm 631, a rotating shaft 632 and a handle 633, two ends of the rotating shaft 632 are rotatably connected to the box 1 through a shaft seat 64, one end of the connecting arm 631 is fixedly connected to the rotating shaft 632, the other end is hinged to the shifting block 62, one end of the handle 633 is fixedly connected to the rotating shaft 632, and the other end extends out of the box 1. The handle 633 extends out of the case 1 for manual holding operation. In this embodiment, two shifting blocks 62 are arranged on each gear sleeve 61 along the diameter direction, each shifting block 62 is hinged to a connecting arm 631, and the two connecting arms 631 are fixedly connected with a rotating shaft 632 to form a fork shape.

Referring to fig. 6, in order to prevent the gear sleeve 61 from sliding axially, the track slab adjustment transmission box may further include a gear sleeve anti-slip mechanism 7, the gear sleeve anti-slip mechanism 7 includes a first elastic element 71 and an anti-rotation component 72, the first elastic element 71 is disposed in the mounting hole of the shaft seat 64, and two ends of the first elastic element 71 are respectively connected to the shaft seat 64 and the rotating shaft 632, the anti-rotation component 72 is disposed on the shifting fork arm 63 and connected to the shaft seat 64, and the anti-rotation component 72 can prevent the rotating shaft 632 from rotating so as to prevent the gear sleeve 61 from sliding axially. The first elastic element 71 can enable the rotating shaft 632 to be in a tightened state all the time, and cannot shake due to vibration of the driving mechanism 2, and the anti-rotation assembly 72 can enable the rotating shaft 632 to be locked and cannot rotate when the gear sleeve 61 is in a connected state and a disconnected state, so that the gear sleeve 61 is prevented from sliding along the axial direction. In this embodiment, two sets of the rotation preventing components 72 are respectively disposed at two ends of the rotating shaft 632. The first elastic element 71 may be a spring, a torsion spring, etc., as long as the rotating shaft 632 is kept in a tight state with respect to the shaft seat 64, and a spiral spring is used in this embodiment. The inner ring of the spiral spring is fixedly connected with the rotating shaft 632, and the outer ring of the spiral spring is fixedly connected with the inner wall of the mounting hole of the shaft seat 64.

Referring to fig. 7, the rotation preventing assembly 72 includes a ratchet 721, a non-return pawl 722, a pawl seat 723, a second elastic element 724, and a pawl telescoping member 725, the ratchet 721 is disposed in the mounting hole of the shaft seat 64, one end of the non-return pawl 722 is hinged to the pawl seat 723, and one end is meshed with the ratchet 721, two ends of the second elastic element 724 are respectively connected to the non-return pawl 722 and the pawl seat 723, the pawl seat 723 is slidably connected to the rotating shaft 632, and the pawl telescoping member 725 drives the pawl seat 723 to slide relative to the rotating shaft 632. With ratchet 721 and check pawl 722 against rotation, the structure is reliable, pawl telescoping member 725 can disengage check pawl 722 from ratchet 721 to allow rotation of shaft 632 when sleeve 61 is switched between the connected and disconnected states. The second elastic member 724 enables the check pawl 722 to be caught with the ratchet 721. Here, the second elastic member 724 does not set the compression amount when the check pawl 722 is caught at the initial position between the ratchet teeth 721. The second elastic element 724 may be a coil spring, a torsion spring, rubber, or the like, as long as the non-return pawl 722 is pressed by the ratchet 721 to rotate and then returns to the initial position, so that the non-return pawl 722 is always clamped between the ratchet 721. In this embodiment, since the rotation shaft 632 is provided at both ends thereof with the check pawl 722 and the ratchet 721, the rotation shaft 632 is provided at both ends thereof with the pawl retracting member 725.

Referring to fig. 5, the pawl extension member 725 includes a third elastic element 7251, a fixing seat 7252, a fixed pulley 7253, a wire cable 7254 and a connecting rod 7255, wherein the fixing seat 7252 is fixedly disposed at one end of the rotating shaft 632; the pawl seat 723 is connected with the fixed seat 7252 in a sliding way; two ends of the third elastic element 7251 are respectively connected with the pawl seat 723 and the fixed seat 7252; the fixed pulley 7253 is rotatably connected with the fixed seat 7252; the rotating shaft 632 is axially provided with a first through hole 632H, the handle 633 is axially provided with a second through hole 633H, the first through hole 632H is communicated with the second through hole 633H, the connecting rod 7255 is arranged in the second through hole 633H, and the middle part of the connecting rod 7255 is hinged with the handle 633; the wire cable 7254 passes through the first through hole 632H, and passes around the fixed pulley 7253, and both ends thereof are fixedly connected to one end of the link 7255 and the pawl holder 723, respectively. The fixing seat 7252 has an H-shaped cross section and is welded to both ends of the rotating shaft 632. The cable 7254 is placed in tension and, when the link 7255 is driven to rotate, the cable 7254 pulls the pawl holder 723 to slide along the fixed holder 7252, thereby disengaging the check pawl 722 from the ratchet 721. The third resilient member 7251 returns the pawl seat 723 to the original position, thereby locking the check pawl 722 in engagement with the ratchet teeth 721. The third elastic element 7251 may be a coil spring, a torsion spring, rubber, etc., as long as the pawl holder 723 can return to the initial position, in this embodiment, a coil spring is used, one end of the coil spring is fixedly connected to the bottom of the pawl holder 723, and the other end of the coil spring is fixedly connected to the fixing seat 7252.

As a further improvement, the other end of the link 7255 may also be provided with a grip 7256, the grip 7256 extending beyond the handle 633. One end of the connecting rod 7255 of the pawl telescopic member 725 is arranged on the handle 633 and extends out of the handle 633, so that manual operation is facilitated.

Referring to fig. 1 to 7, the specific transmission process of the track plate adjusting transmission box includes:

the driving motor 21 drives the driving shaft 22 to rotate, so that the first driving intermediate gear 26 rotates, the driving gear 23 of the driving shaft 22 drives the first driven gear 24 and the second driven gear 25 to rotate, and the second driving intermediate gear 27 and the third driving intermediate gear 28 rotate; when the shifting fork arm 63 is manually driven, the shifting block 62 drives the gear sleeve 61 to axially slide, so that the first driving intermediate tooth 26 and the first driven intermediate tooth 26a can be connected through the gear sleeve 61 to drive the first output shaft 3 to rotate; the second driving intermediate gear 27 and the second driven intermediate gear 27a are connected through a gear sleeve 61 to drive the second output shaft 4 to rotate; the third driving intermediate gear 28 and the third driven intermediate gear 28a are connected to each other by a gear sleeve 61, and the third output shaft 5 is driven to rotate. When the first output shaft 3 needs to be disconnected, the shifting fork arm 63 is only manually driven, so that the shifting block 62 drives the gear sleeve 61 to axially slide, the first driving intermediate gear 26 and the first driven intermediate gear 26a are disconnected, and the first output shaft 3 does not rotate; the second driving intermediate gear 27 and the second driven intermediate gear 27a are disconnected, and the second output shaft 4 does not rotate; the third output shaft 5 does not rotate when the third driving intervening tooth 28 and the third driven intervening tooth 28a are disengaged.

The working principle of the gear sleeve anti-skid mechanism 7 on the shifting fork mechanism 6 is as follows: the first elastic member 71 keeps the rotating shaft 632 in a tightened state, and the check pawl 722 is caught by the ratchet teeth 721 such that the rotating shaft 632 cannot rotate. When the gear sleeve 61 needs to be axially slid to be in a connected state, the handle 633 is pushed to rotate the rotating shaft 632, the ratchet 721 presses the check pawl 722 to rotate around the hinged point, the second elastic element 724 is compressed, when the check pawl 722 passes over the tooth crest of the ratchet 721, the second elastic element 724 pushes the check pawl 722 to be clamped between the ratchet 721 again, and when the gear sleeve 61 is pushed to the position, the check pawl 722 is clamped into the ratchet 721 again to enable the rotating shaft 632 to be incapable of rotating or shaking, so that the stable connected state of the gear sleeve 61 is maintained. When the gear sleeve 61 needs to be disengaged, the gear sleeve 61 needs to slide axially to be disconnected, the handle 633 is held to press the handle 7256, the connecting rod 7255 rotates along the hinged point to pull the wire rope 7254, the wire rope 7254 pulls the pawl seat 723 through the fixed pulley 7253 to slide along the fixed seat 7252, the third elastic element 7251 is compressed, the check pawl 722 is disengaged from the ratchet 721 at the moment, the rotating shaft 632 can rotate, only the handle 633 is pushed to rotate the rotating shaft 632, after the gear sleeve 61 is completely disengaged, the handle 7256 is released, the third elastic element 7251 pushes the pawl seat 723 to enable the check pawl 722 to be clamped between the ratchet 721, and the rotating shaft 632 is prevented from rotating or shaking to cause the gear sleeve 61 to slide or shake.

The track plate adjusting transmission box is adopted, the driving mechanism 2 is respectively connected with and disconnected from the first output shaft 3, the second output shaft 4 and the third output shaft 5 through the shifting fork mechanism 6, the three output shafts are respectively transmitted through the driving motor 21, three driving motors are not required to be arranged for each mechanical device, three sets of electric control equipment and systems are not required to be arranged, only one driving motor and one set of electric control equipment and systems are required to be arranged for each mechanical device, the investment cost is greatly reduced, a large amount of construction space is saved, and the electric control is relatively simple; by arranging the gear sleeve anti-skid mechanism 7 on the shifting fork mechanism 6, the gear sleeve 61 is always kept stable and reliable in two states of connection and disconnection, and the shaking of the gear sleeve 61 is reduced; the mechanism is flexible and reliable, and the applicability is strong.

It should be noted that the above preferred embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.

Claims

1. A track plate adjustment gearbox, comprising:

a box body;

2. The track slab adjusting transmission case according to claim 1, wherein the shifting fork mechanism comprises a gear sleeve, a shifting block, a shifting fork arm and a shaft seat, a circumferential surface of the gear sleeve is provided with a circumferential guide groove, and a circumferential inner ring of the gear sleeve is provided with inner teeth along the circumferential direction;

3. The track plate adjusting transmission case according to claim 2, wherein the shifting fork arm comprises a connecting arm, a rotating shaft and a handle, two ends of the rotating shaft are rotatably connected with the case body through the shaft seat, one end of the connecting arm is fixedly connected with the rotating shaft, the other end of the connecting arm is hinged with the shifting block, one end of the handle is fixedly connected with the rotating shaft, and the other end of the handle extends out of the case body.

4. The track plate adjusting transmission case according to claim 3, further comprising a gear sleeve anti-slip mechanism, wherein the gear sleeve anti-slip mechanism comprises a first elastic element and an anti-rotation component, the first elastic element is disposed in the mounting hole of the shaft seat, two ends of the first elastic element are respectively connected with the shaft seat and the rotating shaft, the anti-rotation component is disposed on the shifting fork arm and connected with the shaft seat, and the anti-rotation component can prevent the rotating shaft from rotating so as to prevent the gear sleeve from sliding axially.

5. The track plate adjusting transmission case according to claim 4, wherein the rotation preventing assembly comprises a ratchet, a check pawl, a pawl seat, a second elastic element and a pawl telescopic member, the ratchet is arranged in the mounting hole of the shaft seat, one end of the check pawl is hinged to the pawl seat, the other end of the check pawl is meshed with the ratchet, two ends of the second elastic element are respectively connected with the check pawl and the pawl seat, the pawl seat is connected with the rotating shaft in a sliding manner, and the pawl telescopic member drives the pawl seat to slide relative to the rotating shaft.

6. The track slab adjusting transmission case according to claim 5, wherein the pawl extension member comprises a third elastic element, a fixed seat, a fixed pulley, a steel wire rope and a connecting rod, and the fixed seat is fixedly arranged at one end of the rotating shaft; the pawl seat is connected with the fixed seat in a sliding way; two ends of the third elastic element are respectively connected with the pawl seat and the fixed seat; the fixed pulley is rotatably connected with the fixed seat; the rotating shaft is provided with a first through hole along the axial direction, the handle is provided with a second through hole along the axial direction, the first through hole is communicated with the second through hole, the connecting rod is arranged in the second through hole, and the middle part of the connecting rod is hinged with the handle; the steel wire rope penetrates through the first through hole, bypasses the fixed pulley, and is fixedly connected with one end of the connecting rod and the pawl seat at two ends respectively.

7. The track plate adjustment gearbox of claim 6, wherein the other end of the connecting rod is provided with a grip extending from the handle.