CN108327734B

CN108327734B - Traction method of track tractor

Info

Publication number: CN108327734B
Application number: CN201810468455.4A
Authority: CN
Inventors: 李勇智; 刘恩怀; 洪斌; 王磊; 孙晖; 金蕾
Original assignee: Wuhan K Crane Ocean Lifting Technology Co ltd; Zhanjiang Port Group Co Ltd
Current assignee: Wuhan K Crane Ocean Lifting Technology Co ltd; Zhanjiang Port Group Co Ltd
Priority date: 2018-05-16
Filing date: 2018-05-16
Publication date: 2020-04-28
Anticipated expiration: 2038-05-16
Also published as: CN108327734A

Abstract

The invention provides a traction method of a track tractor, wherein a first traction trolley of the tractor for providing traction force is clamped on a track, and the first traction trolley locks a first chain transmission mechanism or the second traction trolley locks a second chain transmission mechanism at the same time, so that the position of one point on a chain in the chain transmission mechanism relative to the corresponding traction trolley is not changed, and the tractor is driven to move forwards; and releasing the clamping state of the first traction trolley on the track, clamping a second traction trolley of the tractor on the track, and correspondingly changing the locking state of the first chain transmission mechanism and the second chain transmission mechanism so as to drive the tractor to move forwards continuously. The track tractor traction method provided by the invention has the advantages that the adopted tractor has lighter self weight and low energy consumption, and has good adaptability to heavy-load traction working conditions.

Description

Traction method of track tractor

Technical Field

The present invention relates to a traction apparatus for a track system, and more particularly, to a traction method of a track tractor.

Background

Bulk production materials such as coal, ore, grain, petroleum and the like are generally transported by a freight train, and the power for the operation of the freight train is provided by a locomotive. In ports, mines and cargo yards, cargo handling operations are required for freight trains, and during the operation, the freight trains are required to move slowly in handling areas. Because the manufacturing cost and the use cost of the locomotive are both high, in order to improve the utilization rate of the locomotive and reduce the use cost, the locomotive pulls the freight train to the area and then separates from the train, and the unpowered freight train moves in the loading and unloading area and is handed over to other traction equipment to finish. At present, common train traction modes include steel wire rope shunting winch traction and conventional tractor traction.

The shunting winch pulls the winch capable of sliding on the rail by using the winch and the steel wire rope, and the winch pulls the train to run. The disadvantages of this approach are: 1) the occupied area is large, and the requirement on the basic bearing is high; 2) the utilization rate is low for using the system at fixed points; 3) the maintenance workload is large and the cost is high.

The conventional tractor is a small rail-mounted vehicle device similar to a locomotive, the self weight of the tractor provides positive pressure required by friction driving of wheels and a rail, and the maximum traction force provided by the tractor depends on the self weight of the conventional tractor and the friction coefficient of the wheels and the steel rail of the conventional tractor. Because the friction coefficient between the wheels and the steel rail is difficult to improve, the traction can be improved only by increasing the dead weight of the tractor, and under the requirement of high traction, the manufacturing cost and the use cost of the tractor are inevitably higher in such a way.

Therefore, how to reduce the manufacturing and using cost of the train traction equipment and effectively improve the traction capacity of the traction equipment is a technical problem to be solved by the technical personnel in the field at present.

Disclosure of Invention

To overcome or at least partially solve the above problems, the present invention provides a method of towing a rail tractor.

According to one aspect of the invention, a traction method of a rail tractor is provided, wherein the rail tractor comprises a frame capable of sliding along a rail, and a first traction trolley and a second traction trolley which are arranged on the frame in a sliding mode along the extension direction of the rail; the frame, the first traction trolley and the second traction trolley are linked through a first chain transmission mechanism and a second chain transmission mechanism; the traction method specifically comprises the following steps:

step 1: the first traction trolley is clamped on a track from the side of the track, and the first traction trolley locks the first chain transmission mechanism or the second traction trolley locks the second chain transmission mechanism at the same time, so that the position of one point on a chain of the first chain transmission mechanism relative to the first traction trolley is unchanged, or the position of one point on a chain of the second chain transmission mechanism relative to the second traction trolley is unchanged, the first chain transmission mechanism and the second chain transmission mechanism continue to operate, and the frame and the second traction trolley are driven to move together in the same direction, so that the track tractor moves along the track;

step 2: when the distance between the first traction trolley and the second traction trolley or the distance between the first traction trolley and one end of the frame is reduced to a preset threshold value, the clamping state of the first traction trolley on the track is released, the second traction trolley is clamped on the track from the side of the track, the locking state of the first traction trolley on the first chain transmission mechanism and the locking state of the second traction trolley on the second chain transmission mechanism are correspondingly changed, the first chain transmission mechanism and the second chain transmission mechanism continue to operate, and the frame and the first traction trolley are driven to move in the same direction as that of the tractor in the step 1, so that the track continues to move forwards along the track;

and step 3: when the distance between the second traction trolley and the other end of the frame or the distance between the second traction trolley and the first traction trolley is reduced to the threshold value, the clamping state of the second traction trolley on the track and the locking state of the second chain transmission mechanism are released;

and circularly executing the steps 1-3, and enabling the track tractor to continuously move forwards along the track in the same direction until the destination is reached.

The beneficial effects of the invention are mainly reflected in the following aspects:

the first traction trolley and the second traction trolley which can slide along the frame are arranged on the tractor for providing traction force, the first traction trolley, the second traction trolley and the frame are connected through the first chain transmission mechanism and the second chain transmission mechanism, and meanwhile, the purpose that the tractor pulls other devices to move along the extending direction of the track is achieved by the alternative matching action of the first traction trolley on the locking state of the track and the first chain transmission mechanism and the second traction trolley on the locking state of the track and the second chain transmission mechanism. And the rail is clamped by the side of the rail, the traction force is derived from the friction between the first or second carriage and the side of the rail, which is dependent on the applied positive pressure and the coefficient of friction between the clamp and the rail side. Because the importance of the outer side face of the rail relative to the top face of the rail is low, the clamping force which is required to be applied to the rail by the corresponding required friction force clamp can be designed according to the working condition requirement during design, and the friction coefficient between the clamp and the outer side face of the rail can be improved by properly processing the clamp jaws. Compared with a traction mode of providing positive pressure required by traction by increasing the self weight, the tractor provided by the invention has lighter self weight and lower manufacturing cost, avoids the limitation of the maximum bearing capacity of a track foundation, and has lower operation energy consumption due to lighter self weight. Because the convenient two-way traction function of tractor has push-and-pull characteristic concurrently, various loading operation operating mode of adaptation that can be fine. The traction transmission system provided by the invention adopts chain transmission, and the tractor provided by the invention has good adaptability to heavy-load traction working conditions due to the excellent characteristic of the chain under the traction working conditions. The power output of the tractor is all from the driving device, and the frequency modulation motor is arranged, so that the speed of the tractor can be well adjusted.

Drawings

Fig. 1 is a schematic structural view of a tractor of a traction method of a track tractor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a tractor frame of a traction method of a rail tractor according to an embodiment of the invention;

fig. 3 is a schematic structural view of a traction trolley of a tractor according to a traction method of a track tractor in an embodiment of the invention;

fig. 4 is a schematic structural diagram of a locking mechanism of a tractor according to a traction method of a railway tractor according to an embodiment of the invention;

fig. 5 is a schematic structural view of a gripping mechanism of a tractor according to a traction method of a railway tractor in an embodiment of the present invention;

fig. 6 is a schematic structural view of a gripping mechanism of a tractor according to a traction method of a railway tractor according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a chain drive mechanism of a tractor according to a method of towing a railroad tractor according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a tensioning mechanism of a tractor according to a traction method of a railway tractor according to an embodiment of the invention.

In the figures, 100-frame; 101-a main beam; 102-a first beam column; 103-side truss structure; 104-coupler connection structure; 105-a coupler; 106-second beam column;

200-a tensioning mechanism; 201-a backing plate; 202-a first bearing support; 203-a first lead screw; 204-a second lead screw; 205-a first cart sprocket; 206-a first tensioning frame; 207-a second tensioning frame;

300-a first tractor cart; 301-a first plate; 302-third trolley sprocket; 303-a pulley; 304-a locking mechanism; 305-a clamping mechanism; 306-a first drive; 307-a support; 308-a pallet beam; 309-a toothed insert plate; 310-a first holder; 311-second driving means; 312-a first link; 313-a first support; 314-a first jawarm; 315-first wheel a; 316-second seat; 317-an elastic member; 318-first roller B; 319-first roller C; 320-a first cart frame; 321-a second plate; 322-a second link; 323-a second jawarm; 324-second roller B; 325-second roller A; 326-second roller C;

400-a first chain transmission; 401-first chain a; 402-first chain B; 403-a second chain a; 404-a second chain B;

500-a drive mechanism; 600-a traveling wheel; 700-hydraulic system.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The first, second, etc. before the component name in the present invention are only distinguished names if there is no special description.

The traction method of the track tractor comprises the steps that the track tractor comprises a frame capable of sliding along a track, and a first traction trolley and a second traction trolley which are arranged on the frame in a sliding mode along the extending direction of the track; the frame, the first traction trolley and the second traction trolley are linked through a first chain transmission mechanism and a second chain transmission mechanism; the traction method specifically comprises the following steps:

Referring to fig. 1, the tractor can be used in a track system; the tractor includes a carriage 100, the carriage 100 being mounted on a rail, and the carriage 100 being capable of moving positions along the rail. Referring to fig. 2, the frame 100 includes a frame main rail 101, a first rail 102, and a second rail 106. The frame main beam 101 is a frame structure arranged parallel to the ground; the first beam column 102 and the second beam column 106 are arranged on the upper side of the frame main beam 101 in the extending direction of the rails, and are respectively located at opposite ends of the frame main beam 101.

In order to stabilize the structure of the vehicle frame 100, two side truss structures 103 are further disposed between the first beam column 102 and the second beam column 106, and the two side truss structures 103, the first beam column 102 and the second beam column 106 form a framework structure of a four-sided column. It will be appreciated that first beam column 102, second beam column 106, and/or side truss structure 103 may be constructed of frames in a "field" configuration, or may be constructed of frames having other shapes, so long as it facilitates the formation of stable frame 100 and the installation of other components thereon.

Meanwhile, coupler connection structures 104 are further provided at both ends of the frame main beam 101, and a coupler 105 is linked to an end of the coupler connection structure 104. The coupler 105 is used to make a fixed connection with other devices that the tractor needs to pull. It is understood that coupler coupling structure 104 may also be a frame structure, so long as coupling 105 is facilitated.

Referring to fig. 1, a first traction trolley 300 and a second traction trolley are slidably mounted on the frame main beam 101. The first traction trolley 300 and the second traction trolley are arranged on the frame main beam 101 along the extending direction of the track, and the first traction trolley 300 and the second traction trolley are positioned between the first beam column 102 and the second beam column 106. Both the first wagon 300 and the second wagon are able to slide on the frame rail 101, i.e. to move position relative to the frame 100.

The tractor further comprises a first chain drive 400 and a second chain drive. The first beam column 102, the first traction trolley 300 and the second traction trolley are connected through a first chain transmission mechanism 400; the second beam column 106, the second traction trolley and the first traction trolley are connected through a second chain transmission mechanism. Specifically, during the linking process, the first wagon 300 is positioned between the first beam column 102 and the second wagon, and the second wagon is positioned between the first wagon and the second beam column 106. In the above-mentioned linking process, the first tractor 300 is not necessarily specifically located between the first beam column 102 and the second tractor, and the first tractor 300 and the second tractor may also exchange positions and be linked by using the same linking method.

Referring to fig. 1, the operation state of the tractor is taken as an example when the first traction trolley 300 is clamped on the track and the first traction trolley 300 locks the first chain transmission mechanism 400. The first traction trolley 300 is clamped on the track, so that the position of the first traction trolley 300 relative to the track is not changed; at the same time, when the first chain drive rotates clockwise, the first traction sheave is correspondingly locked in position at a certain point of the first chain drive 400. When the first chain transmission mechanism 400 continues to operate, the first beam column 102 is driven to move away from the first traction trolley 300, i.e. to move in a lower right direction in fig. 1, so as to drive the frame 100 to move in a lower right direction, so as to drive other vehicle bodies or devices connected to the frame 100 to move in a lower right direction in fig. 1; at the same time, the second wagon moves on the frame 100 towards the first beam 102 at the same speed relative to the first beam 102 as the second beam 106 towards the first wagon 300.

When the second traction trolley adopts the same operation mode as the first traction trolley and the operation direction of the chain transmission mechanism is not changed, the frame and the second traction trolley can continuously move along the original direction, so that the tractor continuously moves along a certain direction, and the aim of continuously driving other devices to continuously operate along a certain direction is fulfilled. It is understood that the direction of travel of the first/second chain drive, i.e. of the tractor, can be adjusted.

As the frame 100 moves to the lower right in fig. 1, the first beam column 102 moves away from the first wagon 300, while the second wagon approaches the first wagon. To continuously move the carriage 100 forward, the tractor is continuously moved forward. When the second traction trolley approaches to the first traction trolley 300 for a certain distance and is reduced to a preset threshold value, the clamping of the first traction trolley 300 to the track and the locking state of the first chain transmission mechanism are released, the second traction trolley is clamped on the track, the position of the second traction trolley relative to the track is not changed, and meanwhile, the second traction trolley locks the position of a certain point of the second chain transmission mechanism. When the first chain transmission mechanism 400 and the second chain transmission mechanism continue to run along the same direction, the first traction trolley 300 and the second traction trolley can be driven to be away from each other, and the distance between the first traction trolley and the second traction trolley is pulled; meanwhile, the distance between the second beam column 106 and the second tractor is reduced, and the second tractor drives the frame 100 to move forward continuously along the original direction. When the distance between the second beam column 106 and the second traction trolley is reduced to a preset threshold value, the clamping state of the second traction trolley to the track is released, and the locking state of the second chain transmission mechanism is released. And (3) circularly and alternately carrying out the motion modes of the first traction trolley and the second traction trolley to pull other devices to continuously advance.

In a specific embodiment, two sliding rails are disposed on the frame main beam 101 of the frame 100, and the extending direction of the two parallel sliding rails is the same as the extending direction of the rails. Correspondingly, pulleys 303 are arranged at the bottoms or the sides of the first traction trolley and the second traction trolley; the pulley 303 is positioned to correspond to the position of the rail, such that the pulley 303 can slide or rotate on the rail to allow the first wagon and/or the second wagon to move relative to the frame 100. The pulley 303 may be one or more; the plurality of pulleys 303 form one or two rows as long as the first and second bogies can be moved in position relative to the frame 100.

It will be appreciated that a hydraulic system 700 may also be provided on the frame rails 101.

In one particular embodiment, referring to FIG. 3, the first wagon 300 includes a first wagon frame 320 and at least one first set of brackets. The first wagon 300 preferably comprises two sets of first brackets, which are arranged parallel to each other. It is understood that the first support may be three or more.

The second traction trolley comprises a second trolley frame and at least one group of second supports. The second traction trolley preferably comprises two groups of second supports, and the two groups of second supports are arranged in parallel. The first cart frame 320 has the same structure as the second cart frame, and the first bracket has the same structure as the second bracket. It is understood that the second brackets may be three or more.

The first cart frame 320 of the first wagon 300 has two sets of first brackets. Either set of first brackets includes a first leg 301 and a second leg 321. The first and

second brackets

301 and 321 are mounted on the upper side of the first carriage frame 320. The first leg plate 301 and the second leg plate 321 are parallel to each other and vertically installed on the upper side of the first carriage frame 320. The plate surfaces of the first and

second support plates

301, 321 are parallel to the extension direction of the rail, which facilitates the installation of the first and second chain drives, enables the connection between the first and second bogies, the frame 100 and the first/second chain drive, and ensures that the transmission direction of the chain drive is parallel to the extension direction of the rail. The upper end of the first cart frame 320 may or may not have a planar structure, as long as two sets of first brackets of the first cart frame 300 can be fixedly mounted.

When the first traction trolley 300 is provided with two groups of first supports, two groups of first trolley chain wheel mechanisms are correspondingly arranged on the first traction trolley 300; the two sets of first trolley chain wheel mechanisms are respectively a first trolley chain wheel mechanism A and a first trolley chain wheel mechanism B. A first trolley chain wheel mechanism A is arranged between the first support plate 301 and the second support plate 321 of the first trolley frame 320; a first trolley chain wheel mechanism B is correspondingly arranged between the two support plates of the other group of the first supports. The first trolley chain wheel mechanism A and the first trolley chain wheel mechanism B are distinguished only by names, have the same structure and are both the first trolley chain wheel mechanism positioned on the first traction trolley. The first trolley sprocket mechanism is used for the link between the first traction trolley 300, the second traction trolley, the first beam column 102 and the first/second chain drive 400/mechanism. When the first chain drive 400 and the second chain drive are operated, the first traction trolley 300 can move together with the frame 100 or the first traction trolley 300 can move relative to the frame 100 under the cooperation of the first traction trolley 300 and the second traction trolley.

Similarly, when there are two sets of the second brackets of the second traction trolley, the two sets of the second brackets are parallel to each other and vertically installed on the upper side of the frame of the second trolley. The second bracket has the same structure as the first bracket. Any group of second brackets comprises a first support plate and a second support plate which are parallel to each other and are vertically arranged.

When two groups of second supports of the second traction trolley are arranged, two groups of second trolley chain wheel mechanisms are correspondingly arranged on the second traction trolley; the two sets of second trolley chain wheel mechanisms are respectively a second trolley chain wheel mechanism A and a second trolley chain wheel mechanism B. A second trolley chain wheel mechanism A is arranged between the two support plates of one group of the second supports; and a second trolley chain wheel mechanism B is arranged between the two support plates of the other group of second supports. The second trolley chain wheel mechanism A and the second trolley chain wheel mechanism B are distinguished only by names, have the same structure and are both second trolley chain wheel mechanisms positioned on the second traction trolley. The second trolley chain wheel mechanism and the first trolley chain wheel mechanism have the same or corresponding structures. The second trolley sprocket mechanism is used for the link between the first traction trolley 300, the second traction trolley, the second beam column 106 and the first/second chain drive.

It is understood that the plate surfaces of the two support plates of the first/second support are perpendicular to the first/second beam column and parallel to the extending direction of the track, so that the chain wheel mechanism arranged between the two support plates facilitates the linking of the first/second chain drive 400/400 with other structures.

In a specific embodiment, the first trolley link mechanism and the second trolley chain wheel mechanism have the same or corresponding structures. Any trolley chain wheel mechanism comprises a first chain wheel structure, a second chain wheel structure and a third chain wheel structure. The first chain wheel structure comprises a first central shaft and a first trolley chain wheel sleeved on the first central shaft; the second chain wheel structure comprises a second central shaft and a second trolley chain wheel sleeved on the second central shaft; the third chain wheel structure includes a third central shaft and a third trolley chain wheel 302 sleeved on the third central shaft.

And the first chain wheel structure and the second chain wheel structure have the same structure, the first trolley chain wheel and the second trolley chain wheel are arranged in the vertical direction, and the chain wheel end surface of the first trolley chain wheel and the chain wheel end surface of the second trolley chain wheel are positioned in the same plane. The end face of the chain wheel of the third trolley chain wheel and the end face of the chain wheel of the first trolley chain wheel are positioned in different planes; the end face of the chain wheel of the third trolley chain wheel and the end face of the chain wheel of the second trolley chain wheel are also positioned in different planes. The sprocket end face of the third trolley sprocket and the sprocket end faces of the first/second trolley sprockets are located in different planes, which facilitates the linking of the first/second chain drive 400/300 to the first and second traction trolleys.

Specifically, the third cart sprocket may be located near the first support plate 301 or near the second support plate 321, as long as the sprocket structure in the first cart sprocket mechanism a of the first tractor cart 300 is matched with the sprocket structure in the second cart sprocket mechanism a of the second tractor cart, and the sprocket structure in the first cart sprocket mechanism B of the first tractor cart 300 is matched with the sprocket structure in the second cart sprocket mechanism B of the second tractor cart, so as to facilitate the linking of the first chain transmission mechanism 400/the second chain transmission mechanism. For the sake of simplicity of construction, it is preferable that the first cart sprocket mechanism of the first traction cart 300 is identical in construction to the second cart sprocket mechanism of the second traction cart.

The above description indicates that the first traction trolley and the second traction trolley have the same or corresponding structures, that is: when a third trolley chain wheel of the first traction trolley is close to the first support plate of the first traction trolley first support and a third trolley chain wheel of the second traction trolley is close to the first support plate of the second traction trolley first support, the first traction trolley and the second traction trolley are of the same structure; when the third trolley chain wheel of the first traction trolley is close to the first support plate of the first traction trolley first support and the third trolley chain wheel of the second traction trolley is close to the second support plate of the second traction trolley first support, the first traction trolley and the second traction trolley are corresponding structures.

In a specific embodiment, when the first chain drive or the second chain drive needs to be locked, the first traction sheave or the second traction sheave uses the locking mechanism 304 to lock the first chain drive or the second chain drive. Referring to figure 4, the locking mechanism 304 comprises a first actuator 306, a fork strap beam 308 and a castellated fork strap 309. The first driving device 306 may be hydraulically driven, pneumatically driven or driven by other driving means, such as a hydraulic cylinder or a pneumatic cylinder, as long as it is sufficient to drive the pallet beam 308 to reciprocate in a certain direction. Taking the first towing trolley 300 as an example, one end of the first driving device 306 is fixedly connected to the trolley frame, and the other end thereof can be fixed to the flashboard beam 308 through the support 307.

A toothed fork strap 309 is fixed to one side of the fork strap beam 308. The castellated gate 309 has a castellated structure towards the chain in the first/second chain drive 400/400. Take the locking mechanism 304 of the first wagon 300 as an example. When the first chain transmission 400 needs to be locked, the first driving device 306 drives the fork strap beam 308 to move towards the chain direction of the first chain transmission 400, so as to drive the tooth-shaped structure of the tooth-shaped fork strap 309 to be inserted into the gap of the chain, so that the position of the gap of the chain of the first chain transmission 400 does not change relative to the position of the first traction trolley 300. When the clamping mechanism 305 of the first traction carriage 300 is clamped on the rail, the first chain transmission mechanism 400 can drive the first beam column 102 to move towards/away from the first traction carriage 300, so as to drive the relative position change of other devices connected with the tractor.

In particular, the number of the toothed insert plates 309 fixedly arranged on the insert plate beam 308 may be one or more, and the number thereof is matched with the number of the chains in the transmission structure of the first chain transmission mechanism 400/the second chain transmission mechanism. The driving device for driving the inserting plate beam 308 to move may be one set or multiple sets, as long as the operation state of the inserting plate beam 308 can be satisfied. Meanwhile, the toothed insert plate 309 may be provided on the upper side of the insert plate beam 308, or may be provided on the lower side of the insert plate beam 308, as long as the locking function of the first chain transmission mechanism 400/the second chain transmission mechanism can be achieved.

It will be appreciated that the locking mechanism 304 of the second wagon is of the same construction as the locking mechanism 304 of the first wagon. The locking mechanism 304 of the first traction carriage is used to lock the first chain drive 400 and the locking mechanism 304 of the second traction carriage is used to lock the second chain drive.

In a specific embodiment, the first or second wagon is clamped to the rail from both sides of the rail using a clamping mechanism. Referring to fig. 5, the clamping mechanism 305 for clamping the rail by the side of the rail includes a first fixing frame 310, a clamp driving unit, and a clamping unit. The clamp driving unit and the clamp unit are positioned inside the first fixing frame 310; the clamp unit is located on the side of the clamp driving unit. The first fixing frame 310 is a hollow frame structure, and the upper end of the first fixing frame is fixed on the lower side of the first trolley frame 320; also, the lower side of the first fixing frame 310 has an opening facing the rail.

The clamp unit includes a first clamp subunit and a second clamp subunit. The first and second clamp sub-units are disposed on opposite sides of the clamp drive unit. The first and second clamp sub-units have the same structure.

The first jaw subunit includes a first jaw arm 314; the second gripper sub-unit comprises a second gripper arm 323. The lower end of the first jawarm 314 and the lower end of the second jawarm 323 are on opposite sides of the track. The clamp driving unit is used for driving the lower end part of the first clamp arm 314 and the lower end part of the second clamp arm 323 to move towards or away from the track.

When the clamp driving unit drives the lower end of the first clamp arm 314 and the lower end of the second clamp arm 323 to move towards the direction close to the track, the clamp can be clamped on the track, and the position of the first traction trolley 300 or the second traction trolley is fixed; when the clamp driving unit drives the lower end portion of the first clamp arm 314 and the lower end portion of the second clamp arm 323 to move in a direction away from the rail, the clamping state of the rail by the clamping mechanism can be released.

In a particular embodiment, as shown in fig. 5, the clamp driving unit includes a second driving means 311, a first holder 313 and an elastic member 317. The second driving device 311, the first support 313 and the elastic member 317 are located inside the first fixing frame 310.

The elastic member 317 is supported at the bottom of the first fixing frame 310; the first seat 313 is located on the upper side of the elastic member 317. The elastic member 317 may employ a spring or other elastic member to achieve the reciprocating motion of the first holder 313 in the vertical direction. In addition, the elastic member 317 may be directly supported at the bottom of the first fixing frame 310; a second support 316 can also be fixedly arranged at the bottom of the first fixing frame 310; the second support 316 is located inside the first holder 310. One end of the elastic member 317 is fixed to the upper end of the second support 316, and the other end is fixed to the bottom of the first support 313.

A second driving device 311 is connected to an upper side of the first support 313. The lower end of the second driving device 311 is connected to the first support 313, and the upper end of the second driving device 311 is fixed to the top of the first fixing frame 310. The second driving means 311 serves to drive the first support 313 to reciprocate in the vertical direction. The second driving device 311 may be driven by hydraulic pressure, pneumatic pressure, or other driving methods, as long as it can drive the first support 313 to reciprocate in the vertical direction.

Take the structure of the first gripper unit as an example. The first clamp subunit includes a first link 312, a first clamp arm 314 and a first roller a315, a first roller B318 and a first roller C319. The upper end of the first link 312 is hinged to one side of the first support 313 through a first roller B318; the lower end of the first clamp arm 314 is hinged to the bottom of the first fixing frame 310 or one side of the second support 316 through a first roller C319; the lower end of the first link 312 is hinged to the upper end of the first jawarm 314 by a first roller a 315. Also, the first link 312 is positioned above the first jawarm 314. The lower end of the first clamp arm 314 passes through the opening at the bottom of the first fixing frame 310 and extends to the side of the rail.

Similarly, referring to fig. 6, the second caliper subunit includes a second link 322, a second caliper arm 323, a second roller a325, a second roller B324, and a second roller C326. The upper end of the second connecting rod 322 is hinged to the other side of the first supporting seat 313 through a second roller B324; the lower end of the second clamp arm 323 is hinged to the bottom of the first fixing frame 310 or the other side of the second support 316 through a second roller C326; the lower end of the second link 322 is hinged to the upper end of the second caliper arm 323 via a second roller a 325. The second link 322 is located above the second caliper arm 323. The lower end of the second clamp arm 323 passes through the opening at the bottom of the first fixing frame 310 and extends to the side of the rail.

The first link 312 and the second link 322 are located at opposite sides of the first bracket 313 and are symmetrical with respect to the first bracket 313; the first and

second jawarms

314, 323 are positioned on opposite sides of the first support 313 and are symmetrical about the first support 313. The lower end of the first jawarm 314 and the lower end of the second jawarm 323 are on opposite sides of the track.

When the second driving device 311 drives the first support 313 to move downwards, the position where the first link 312 is hinged to the first support 313 and the position where the second link 322 is hinged to the first support 313 both move downwards along with the first support 313, so that the position where the first link 312 is hinged to the first jawarm 314 moves away from the first support 313; that is, the upper end of the first clamp arm 314 moves away from the first support 313, so that the lower end of the first clamp arm 314 moves closer to the track; meanwhile, the position where the second connecting rod 322 is connected with the second forceps arm 323 also moves away from the first support 313; that is, the upper end portion of the second forceps arm 323 moves away from the first support 313, so that the lower end portion of the second forceps arm 323 moves closer to the rail.

That is, the lower end of the first jawarm 314 and the lower end of the second jawarm 323 move closer to the track. The lower end of the first clamp arm 314 and the lower end of the second clamp arm 323 are both located at the sides of the track and at opposite sides of the same track. When the lower end of the first clamp arm 314 and the lower end of the second clamp arm 323 move to the side close to the rail, the rail is clamped by the side of the rail.

When the clamping state of the rail needs to be released, the second driving device 311 and the elastic member 317 drive the first support 313 to move upwards, so that the upper end portion of the first clamp arm 314 and the upper end portion of the second clamp arm are driven to move towards the direction close to the first support 313, the lower end portion of the first clamp arm 314 and the lower end portion of the second clamp arm 323 both move towards the direction away from the rail, and the clamping state of the rail is released.

It will be appreciated that the first cart 300 and the second cart each include two sets of clamping mechanisms 305. Taking the structure of the first tractor 300 as an example, the two sets of clamping mechanisms are the first clamping mechanism a and the first clamping mechanism B, respectively. The two sets of clamping mechanisms are symmetrically arranged on the lower side of the first traction trolley 300; each set of clamping mechanisms is arranged corresponding to one rail. It will be appreciated that the tractor may also be used in a monorail system; when used in a monorail system, the first/

second bogies

300, 300 may each be provided with a set of clamping mechanisms 305.

When the first tractor 300/the second tractor needs to be clamped on the track, the second driving device 311 of the clamping mechanism 305 on any tractor drives the first support 313 to move downwards, and further drives the lower end of the first clamp arm 314 and the lower end of the second clamp arm 323 to move towards the direction close to the track so as to be clamped on the track from the side of the track, and therefore the first tractor 300/the second tractor cannot change the position relative to the track. When the clamping state needs to be released, the second driving device 311 drives the first support 313 to move upwards, and drives the first connecting rod 312 to move in the direction away from the rail, so as to drive the first clamp 314 to move in the direction away from the rail, thereby releasing the clamping state of the rail.

In one embodiment, referring to fig. 7, at least one set of cart sprocket mechanisms is fixedly disposed on the sidewalls of the first beam column 102 and the second beam column 106 to match the linking state between the frame 100 and the first/second cart 300/106. Two sets of cart sprocket mechanisms are preferably fixedly disposed on the side walls of the first beam column 102 and the second beam column 106.

The big chain wheel mechanism on the frame 100 is matched with the small chain wheel mechanism on the traction trolley 300/the second traction trolley and is arranged correspondingly one by one. The number of large chain wheel mechanisms on the first beam column 102 or the second beam column 106 is the same as the number of chains in the first/second chain drive. Preferably, two sets of cart chain wheel mechanisms are respectively arranged on the first beam column 102 and the second beam column 106; the two sets of cart sprocket mechanisms on the first beam column 102 or the two sets of cart sprocket mechanisms on the second beam column 106 are arranged in parallel with each other.

Specifically, when two sets of trolley chain wheel mechanisms are respectively arranged on the first traction trolley 300 and the second traction trolley, and two sets of cart chain wheel mechanisms are respectively arranged on the first beam column 102 and the second beam column 106, the two sets of cart chain wheel mechanisms on the first beam column 102 are respectively a first cart chain wheel mechanism a and a first cart chain wheel mechanism B, and the two sets of cart chain wheel mechanisms on the second beam column 106 are respectively a second cart chain wheel mechanism a and a second cart chain wheel mechanism B. The first big vehicle chain wheel mechanism A, the first small vehicle chain wheel mechanism A, the second small vehicle chain wheel mechanism A and the second big vehicle chain wheel mechanism A are arranged along the same straight line direction; the first big vehicle chain wheel mechanism B, the first small vehicle chain wheel mechanism B, the second small vehicle chain wheel mechanism B and the second big vehicle chain wheel mechanism B are arranged along the same straight line direction.

The chain wheel mechanisms of the big vehicles have the same structure. The cart sprocket mechanism includes a first cart sprocket 205 and a second cart sprocket, and the first cart sprocket 205 and the second cart sprocket are located in the same vertical direction. That is, the first cart sprocket 205 is disposed in an up-down orientation with the second cart sprocket. Moreover, the end face of the sprocket of the first cart sprocket 205 and the end face of the sprocket of the second cart sprocket are located in the same plane, and the end faces of the sprockets of the first cart sprocket 205 and the second cart sprocket and the corresponding end faces of the sprockets of the first cart sprocket and the second cart sprocket are located in the same plane, or the end faces of the sprockets of the first cart sprocket 205 and the second cart sprocket and the corresponding end face of the sprocket of the third cart sprocket are located in the same plane. That is, the end faces of the first cart sprocket 205, the second cart sprocket, the first cart sprocket and the second cart sprocket are all in the same plane, or the end faces of the first cart sprocket 205, the second cart sprocket and the third cart sprocket are all in the same plane. The spacing between the first cart sprocket 205 and the second cart sprocket is the same as the spacing between the first cart sprocket and the second cart sprocket to facilitate the linkage between the first beam column 102/second beam column 106 and the first tractor 300/second tractor.

Specifically, the first and second bogies are linked with the cart sprocket mechanisms on the first and

second columns

102 and 106 by chains in the first and second chain drives.

In a particular embodiment, the first 400 and second 400 chain drives for connecting the frame 100 with the first/second traction trolley have the same construction, see fig. 7. Take the structure of the first chain transmission 400 as an example. The first chain drive 400 comprises at least one chain in a closed loop. The first chain drive 400 preferably has two chains in a closed loop; the winding structure of the two chains is the same.

When the first chain transmission 400 comprises two chains, it is a first chain a and a first chain B. Take the first chain a as an example. The first end of the first chain A is linked to a second trolley chain wheel mechanism A of a second traction trolley; the second end of the first chain A is firstly in a U shape and bypasses a first cart chain wheel of the first cart chain wheel mechanism A, then is in a U shape and bypasses a third cart chain wheel of the first cart chain wheel mechanism A, then is in a U shape and bypasses a second cart chain wheel of the first cart chain wheel mechanism A, and finally is linked to a second traction trolley and is connected with the first end of the first chain A to form a closed-loop structure. Similarly, a first cart sprocket mechanism B on the first beam column 102, a first cart sprocket mechanism B on the first tractor cart 300, and a second cart sprocket mechanism B on the second tractor cart are linked by a second chain B in a closed loop in the same manner.

Similarly, the second chain drive is connected to link the second beam column 106, the second cart and the first cart in the same manner as the chain is wound in the first chain drive 400. When the second chain drive comprises two chains, it is a second chain a and a second chain B. Take the second chain a as an example. The first end of the second chain A is linked to a first trolley chain wheel mechanism A of the first traction trolley; the second end of the second chain A is a first cart chain wheel which is U-shaped and bypasses the second cart chain wheel mechanism A, then is a third cart chain wheel which is U-shaped and bypasses the second cart chain wheel mechanism A, then is a second cart chain wheel which is U-shaped and bypasses the second cart chain wheel mechanism A, and finally is linked to the first traction cart and is connected with the first end of the second chain A to form a closed-loop structure. Similarly, the second cart sprocket mechanism B on the second beam column 106, the second cart sprocket mechanism B on the second wagon 300, and the first cart sprocket mechanism B on the first wagon are linked by the second chain B in a closed loop in the same manner.

For a complete description of the linking state of the first chain transmission 400 and the second chain transmission to the frame 100, the first traction trolley 300 and the second traction trolley, a specific linking mode is taken as an example below. Wherein, the first traction trolley 300 and the second traction trolley are respectively provided with two sets of trolley chain wheel mechanisms; the first beam column 102 and the second beam column 106 are provided with two sets of cart chain wheel mechanisms; the first chain drive 400 and the second chain drive each have two chains as an example. The first cart chain wheel is positioned above the second cart chain wheel.

Take the first trolley sprocket over the second trolley sprocket as an example. A first end of a first chain a in the first chain transmission mechanism 400 bypasses a first trolley chain wheel of the second traction trolley corresponding to the second trolley chain wheel mechanism a; the second end of the first chain A is firstly in a U shape and bypasses a first big car chain wheel corresponding to the first big car chain wheel mechanism A on the first beam column 102, and then is in a U shape and bypasses a third car chain wheel corresponding to the first small car chain wheel mechanism A of the first traction car 300, and then is in a U shape and bypasses a second big car chain wheel corresponding to the first big car chain wheel mechanism A, and bypasses a second car chain wheel corresponding to the second small car chain wheel mechanism A of the second traction car, and is connected with the first end of the first chain A to form a closed loop.

Meanwhile, a first end of a second chain A of the second chain transmission mechanism bypasses a first trolley chain wheel of the first traction trolley corresponding to the first trolley chain wheel mechanism A; the second end of the second chain A is firstly in a U shape and bypasses a first cart chain wheel corresponding to the second cart chain wheel mechanism A on the second beam column 106, then is in a U shape and bypasses a third cart chain wheel corresponding to the second cart chain wheel mechanism A of the second traction cart, then is in a U shape and bypasses a second cart chain wheel corresponding to the second cart chain wheel mechanism A of the second cart chain wheel mechanism A, and bypasses a second cart chain wheel corresponding to the first cart chain wheel mechanism A of the first traction cart and is connected with the first end of the second chain A to form a closed loop.

Likewise, the first end of the first chain B in the first chain drive 400 passes around the first trolley sprocket of the second traction trolley corresponding to the second trolley sprocket mechanism B; the second end of the first chain B firstly takes the shape of a U and bypasses a first cart chain wheel corresponding to the first cart chain wheel mechanism B on the first beam column 102, then takes the shape of a U and bypasses a third cart chain wheel corresponding to the first cart chain wheel mechanism B of the first traction cart 300, then takes the shape of a U and bypasses a second cart chain wheel corresponding to the first cart chain wheel mechanism B, and bypasses a second cart chain wheel corresponding to the second cart chain wheel mechanism B of the second traction cart, and is connected with the first end of the first chain B to form a closed loop.

Meanwhile, a first end of a second chain B of the second chain transmission mechanism bypasses a first trolley chain wheel of the first traction trolley corresponding to the first trolley chain wheel mechanism B; the second end of the second chain B is firstly U-shaped and bypasses a first cart chain wheel corresponding to a second cart chain wheel mechanism B on the second beam column 106, then is U-shaped and bypasses a third cart chain wheel corresponding to the second cart chain wheel mechanism B of the second traction cart, then is U-shaped and bypasses a second cart chain wheel corresponding to the second cart chain wheel mechanism B of the second cart chain wheel mechanism B, and bypasses a second cart chain wheel corresponding to the first cart chain wheel mechanism B of the first traction cart and is connected with the first end of the second chain B to form a closed loop.

As shown in fig. 7, for example, the first chain drive 400 and the second chain drive operate in the same drive direction to the right. When the clamping mechanism 305 of the first traction trolley 300 is clamped on the rail and the locking mechanism 304 of the first traction trolley 300 locks a certain point on the chain in the first chain transmission mechanism 400, the position of the first traction trolley 300 relative to the rail does not change, and simultaneously, as the chain of the first chain transmission mechanism 400 is driven to the right, the chain in the first chain transmission mechanism 400 integrally continues to operate, so that the distance between the first traction trolley 300 and the second beam column 106 is reduced, the distance between the first traction trolley 300 and the first beam column 102 is increased, and the first chain transmission mechanism 400 drives the second beam column 106 to move towards the direction close to the first traction trolley 300, thereby driving the vehicle frame 100 to integrally move to the right; meanwhile, as the frame 100 moves to the right, the second traction trolley moves to the right together with the frame 100, thereby driving other devices connected to the frame 100 to move to the right together.

When the second traction trolley approaches the first traction trolley 300 and the distance between the first traction trolley and the second traction trolley is reduced to a set threshold value, the clamping mechanism 305 of the first traction trolley 300 is loosened to clamp the track, the clamping state of the first traction trolley 300 is released, and meanwhile, the locking state of the locking mechanism 304 of the first traction trolley 300 to the first chain transmission mechanism 400 is released.

At the same time, the clamping mechanism 305 of the second wagon is clamped to both sides of the rail, and the locking mechanism 304 of the second wagon locks the chain of the second chain drive. At this time, the position of the second traction trolley relative to the track does not change, and since the driving directions of the first chain transmission mechanism 400 and the second chain transmission mechanism are the same, the second chain transmission mechanism drives the second beam column 106 to move rightwards, so as to drive the whole frame 100 to move rightwards continuously, the first traction trolley 300 and the frame 100 move rightwards continuously, so that the frame 100 can move rightwards continuously, and further other devices can be pulled to move towards the same direction continuously.

Likewise, when left traction is desired, only the drive direction of the first chain drive 400 and the second chain drive needs to be changed. Specifically, the clamping mechanism 305 and the locking mechanism 304 of the first traction trolley 300, and the clamping mechanism 305 and the locking mechanism 304 of the second traction trolley cooperate alternately, so that the frame 100 can move continuously in a certain direction, and the purpose of traction is achieved.

It can be understood that, when the first chain transmission mechanism 400 includes two chains, the second chain transmission mechanism also includes two chains, the first traction trolley includes two sets of first supports and two sets of first trolley chain wheel mechanisms, the second traction trolley includes two sets of second supports and two sets of second trolley chain wheel mechanisms, two sets of cart chain wheel mechanisms and at least two sets of tensioning mechanisms are correspondingly arranged on the first beam column, two sets of chain wheel mechanisms and at least two sets of tensioning mechanisms are arranged on the second beam column, meanwhile, two tooth-shaped inserting plates are arranged on the inserting plate beam of the first traction trolley, and two tooth-shaped inserting plates are arranged on the inserting plate beam of the second traction trolley.

In one specific embodiment, referring to fig. 8, to improve the operating efficiency of the first/second chain drive 400/106, at least one set of tensioning mechanisms 200 is provided at each location corresponding to the sprocket mechanisms on the first and

second columns

102, 106. There are preferably two sets of each of the first beam 102 and the second beam 106. The two sets of tensioning mechanisms arranged on the first beam column 102 are a first tensioning mechanism A and a first tensioning mechanism B respectively; the two sets of tensioning mechanisms arranged on the second beam column 106 are a second tensioning mechanism a and a second tensioning mechanism B respectively. The tensioning mechanisms 200 are arranged in one-to-one correspondence with the sprocket mechanisms; each tensioning mechanism 200 is located between the first beam column 102 and the second beam column 106. The structure of each set of tensioning mechanisms 200 is identical.

Either set of tensioning mechanisms 200 includes a first tensioning frame 206, a second tensioning frame 207, a first bearing support 202, a second bearing support, a first lead screw 203, and a second lead screw 204. The first and second tension frames 206 and 207 are vertically disposed, and the first and second tension frames 206 and 207 are parallel to each other. One side of the first tensioning frame 206 is fixed to the side wall of the first/second beam/column 102/106 and one side of the second tensioning frame 207 is also fixed to the side wall of the first/second beam/column 102/106.

The first tensioning frame 206 and the second tensioning frame 207 each have a hollow slide. The hollow slide way is arranged along the horizontal direction, and the extending direction of the hollow slide way is parallel to the extending direction of the track. Specifically, the hollow sliding structure may have an opening at the side of the first tensioning frame 206/the second tensioning frame 207, and the top and/or the bottom of the opening on the first tensioning frame 206/the second tensioning frame 207 is provided with a sliding rail. A first bearing support 202 is clamped in a hollow slideway of the first tensioning frame 206, and a second bearing support is clamped in a hollow slideway of the second tensioning frame 207; the first bearing support 202 is slidably positioned in the hollow slide of the first tensioning frame 206 along the extension direction of the rail, and the second bearing support is slidably positioned in the hollow slide of the second tensioning frame 207 along the extension direction of the rail. The top and/or bottom of the first bearing support 202/second bearing support are provided with slides, respectively, so that the first bearing support 202/second bearing support can slide in position relative to the first tensioning frame 206/second tensioning frame 207.

Specifically, a first lead screw 203 is fixed on the first bearing support 206 on a side close to the first/second beam column 102/106. The first screw 203 penetrates through the side wall of the first beam/column 102/106 and is screwed on the first beam/column 102/106 through a bolt. A second screw 204 is fixed on the second bearing support 207 at a side close to the first beam column 102/the second beam column 106. The second screw 204 passes through the side wall of the first/second beam/column 102/106 and is screwed to the first/second beam/column 102/106 by bolts. The first cart sprocket/second cart sprocket is rotatably coupled between the first bearing support 202 and the second bearing support via a shaft. By rotating the corresponding screws, the first lead screw 203 and the second lead screw 204 are driven to move in the horizontal direction, so as to adjust the tightness state of the first chain transmission mechanism 400/the second chain transmission mechanism.

For example, the structure of the first tensioning mechanism a provided on the side wall of the first beam column 102 is taken as an example. The first tensioning frame 206 and the second tensioning frame 207 are vertically arranged, and one side of the first tensioning frame 206 is fixed on the side wall of the first beam column 102 through the first screw rod 203, and one side of the second tensioning frame 207 is also fixed on the side wall of the first beam column 102 through the second screw rod 204. A first bearing support 202 is engaged in the hollow slide of the first tension frame 206, a second bearing support is engaged in the hollow slide of the second tension frame 207, and a first cart sprocket 205/a second cart sprocket are provided between the first bearing support 202 and the second bearing support through a rotating shaft. When the first cart sprocket 205/second cart sprocket rotates with the first chain drive 400, the shaft rotates with the sprocket relative to the first bearing support 202 and the second bearing support.

A tie plate 201 may be added between the first 206/second 207 tensioning frames and the first 102/second 106 beam columns. When the tightness of the first chain transmission mechanism 400/the second chain transmission mechanism needs to be adjusted, the tightness of the chain can be adjusted only by screwing the bolts screwing the first screw rod 203 and the second screw rod 204 to move the first screw rod 203 and the second screw rod 204 towards or away from the first traction trolley.

In a particular embodiment, the tractor further comprises a drive mechanism 500, the drive mechanism 500 being used to drive the first chain drive 400 and the second chain drive. The driving mechanism is positioned between the first traction trolley and the second traction trolley. The drive mechanism includes a motor and at least two drive wheels. The drive mechanism preferably comprises four drive wheels; the four driving wheels are coaxially arranged and are all connected with an output shaft of the motor. The output shaft of the motor is perpendicular to the extending direction of the track. And, four drive wheels bisymmetry sets up in the both sides of motor. Specifically, each driving wheel is correspondingly linked with one chain; when the driving wheel is driven by the motor to rotate, the driving wheel drives the chain connected with the driving wheel to rotate, so that the traction trolley is driven to move.

In one particular embodiment, the bottom of the frame 100 is provided with road wheels. Specifically, two rows of road wheels 600 are arranged at the bottom of the frame 100, and the positions of the two rows of road wheels 600 are respectively arranged corresponding to the two tracks. That is, a row of traveling wheels is correspondingly disposed above each track, the traveling wheels are engaged with the tracks, and the traveling wheels slide or roll along the tracks, so that the carriage 100 can move relative to the tracks.

According to the traction method of the track tractor, two traction trolleys capable of sliding relative to the frame 100 are arranged on the frame 100 along the track extending direction, each traction trolley is provided with a corresponding clamping mechanism 305 and a corresponding locking mechanism 304, the frame 100, the first traction trolley 300 and the second traction trolley are linked through the first chain transmission mechanism 400 and the second chain transmission mechanism, and the clamping mechanism 305 and the locking mechanism 304 of the first traction trolley and the clamping mechanism 305 and the locking mechanism 304 of the second traction trolley are matched to run, so that the purpose of driving the frame to move along the track extending direction is achieved, and the purpose of dragging other devices connected with the tractor to move along the track extending direction is achieved.

To fully illustrate the towing method of the towing vehicle, the following is an example of the towing vehicle's complete linkage and driving method. Wherein, the first traction trolley 300 and the second traction trolley are respectively provided with two sets of trolley chain wheel mechanisms; the first beam column 102 and the second beam column 106 are provided with two sets of cart chain wheel mechanisms; the first chain drive 400 and the second chain drive each have two chains as an example. The first cart chain wheel is positioned above the second cart chain wheel.

Meanwhile, a first end of a second chain B of the second chain transmission mechanism bypasses a first trolley chain wheel of the first traction trolley corresponding to the first trolley chain wheel mechanism B; the second end of the second chain B is firstly in a U shape and bypasses a first cart chain wheel corresponding to a second cart chain wheel mechanism B on the second beam column 106, then is in a U shape and bypasses a third cart chain wheel corresponding to the second cart chain wheel mechanism B of the second traction cart, then is in a U shape and bypasses a second cart chain wheel corresponding to the second cart chain wheel mechanism B of the second cart chain wheel mechanism B, and bypasses a second cart chain wheel corresponding to the first cart chain wheel mechanism B of the first traction cart, and is connected with the first end of the second chain B to form a closed loop.

The tractor can be controlled in various ways, and when the transmission directions of the chain transmission mechanisms are different, the movement direction of the tractor can be correspondingly changed. Take a clockwise rotation of the chain drive as an example.

For example, the movement mode one

A1, when only the clamp mechanism of the first traction trolley is clamped on the track and the locking mechanism of the first traction trolley locks the first chain transmission mechanism, the tractor advances to the right in figure 1;

a2, when the distance between the first traction trolley and the second traction trolley is reduced to a preset threshold value, releasing the locking state of the first traction trolley on the track and the first chain transmission mechanism, enabling the clamping mechanism of the second traction trolley to be clamped on the track, and enabling the locking mechanism of the second traction trolley to lock the second chain transmission mechanism to enable the tractor to continue moving rightwards;

a3, when the distance between the second traction trolley and the second beam column is reduced to a preset threshold value, releasing the locking state of the second traction trolley to the track and the second chain transmission mechanism;

and circularly executing A1-3 to make the tractor move forward continuously until the destination is reached.

Exercise mode two

B1, when only the clamp mechanism of the first traction trolley is clamped on the track and the locking mechanism of the second traction trolley locks the second chain transmission mechanism, the tractor advances to the left in the figure 1;

b2, when the distance between the first traction trolley and the first beam column is reduced to a preset threshold value, releasing the clamping state of the first traction trolley on the track and the locking state of the second traction trolley on the second chain transmission mechanism, clamping the clamping mechanism of the second traction trolley on the track, locking the first chain transmission mechanism by the locking mechanism of the first traction trolley, and enabling the tractor to continuously move leftwards;

b3, when the distance between the first traction trolley and the second traction trolley is reduced to a preset threshold value, the clamping state of the second traction trolley to the track and the locking state of the first traction trolley to the first chain transmission mechanism are released;

and B1-3 is executed circularly, so that the tractor continuously moves forwards until the destination is reached.

Mode of motion three

When the locking mechanisms of the first traction trolley and the second traction trolley do not lock the corresponding chain transmission mechanisms, and the clamping mechanisms of the first traction trolley and the second traction trolley are not clamped on the track, or only one clamping mechanism of one traction trolley is clamped on the track, the relative position of the tractor, the first traction trolley and the second traction trolley cannot be changed.

Exercise mode four

When the clamping mechanisms of the first traction trolley and the second traction trolley are not clamped on the track, and only one locking mechanism locks the corresponding chain transmission mechanism in the locking mechanisms of the first traction trolley and the second traction trolley, the tractor does not change the position relative to the track, but the first traction trolley and the second traction trolley change the relative position and are close to or far away from each other.

The following is an example of the motion mode one. As shown in fig. 7, for example, the first chain drive 400 and the second chain drive run in the same drive direction to the right, i.e. when the chain drives rotate clockwise. When the clamping mechanism 305 of the first traction trolley 300 is clamped on the rail and the locking mechanism 304 of the first traction trolley 300 locks a certain point on the chain in the first chain transmission mechanism 400, the position of the first traction trolley 300 relative to the rail does not change, and simultaneously, as the chain of the first chain transmission mechanism 400 is driven to the right, the chain in the first chain transmission mechanism 400 integrally continues to operate, so that the distance between the first traction trolley 300 and the second beam column 106 is reduced, the distance between the first traction trolley 300 and the first beam column 102 is increased, and the first chain transmission mechanism 400 drives the second beam column 106 to move towards the direction close to the first traction trolley 300, thereby driving the vehicle frame 100 to integrally move to the right; meanwhile, as the frame 100 moves to the right, the second traction trolley moves to the right together with the frame 100, thereby driving other devices connected to the frame 100 to move to the right together.

When the second traction trolley approaches the first traction trolley 300 and the distance between the first traction trolley and the second traction trolley is reduced to a preset threshold value, the clamping mechanism 305 of the first traction trolley 300 is loosened to clamp the track, the clamping state of the first traction trolley 300 is released, and meanwhile, the locking state of the locking mechanism 304 of the first traction trolley 300 to the first chain transmission mechanism 400 is released.

When the distance between the second traction trolley 300 and the second beam column 106 is reduced to a preset threshold value, the clamping state of the second traction trolley 300 clamping mechanism to the track is released, and the locking state of the second traction trolley 300 locking mechanism to the second chain transmission mechanism is released; and according to the operation of the first traction trolley, clamping the first traction trolley on the track again and locking the first chain transmission mechanism.

The clamping state of the first traction trolley 300 to the track, the locking state of the first chain transmission mechanism, the clamping state of the second traction trolley to the track and the locking state of the second chain transmission mechanism are executed in a circulating mode, and the tractor continuously moves towards the same direction until the destination is reached.

Likewise, when left traction is desired, only the drive direction to the first chain drive 400 and the second chain drive needs to be changed. Specifically, the clamping mechanism 305 and the locking mechanism 304 of the first traction trolley 300, and the clamping mechanism 305 and the locking mechanism 304 of the second traction trolley cooperate alternately, so that the frame 100 can move continuously in a certain direction, and the purpose of traction is achieved.

Finally, the method of the present invention is only a preferred embodiment and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The method for towing the rail tractor is characterized in that the rail tractor comprises a frame capable of sliding along a rail, and a first towing trolley and a second towing trolley which are arranged on the frame in a sliding mode along the extension direction of the rail; the frame, the first traction trolley and the second traction trolley are linked through a first chain transmission mechanism and a second chain transmission mechanism; the traction method specifically comprises the following steps:

step 2: when the distance between the first traction trolley and the second traction trolley or the distance between the first traction trolley and one end of the frame is reduced to a preset first threshold value, the clamping state of the first traction trolley on the track is released, the second traction trolley is clamped on the track from the side of the track, the locking state of the first traction trolley on the first chain transmission mechanism and the second traction trolley on the second chain transmission mechanism is correspondingly changed, the first chain transmission mechanism and the second chain transmission mechanism continue to operate, the frame and the first traction trolley are driven to move in the same direction as that in the step 1, and the track tractor continues to move forwards along the track;

and step 3: when the distance between the second traction trolley and the other end of the frame or the distance between the second traction trolley and the first traction trolley is pulled to reach a preset second threshold value, the clamping state of the second traction trolley on the track is released, and the locking state of the first traction trolley on the first chain transmission mechanism and the locking state of the second traction trolley on the second chain transmission mechanism are correspondingly changed;

2. The method of claim 1, wherein the first and second bogies each include a bogie frame and at least one set of brackets secured to an upper side of the bogie frame;

the support comprises a first support plate and a second support plate which are parallel to each other and are vertically arranged, and a trolley chain wheel mechanism for linking the first chain transmission mechanism or the second chain transmission mechanism is arranged between the first support plate and the second support plate.

3. The method of claim 2, wherein the cart sprocket mechanism comprises a first sprocket structure, a second sprocket structure, and a third sprocket structure;

the central shafts of the first chain wheel structure, the second chain wheel structure and the third chain wheel structure are respectively connected with the first support plate and the second support plate, the first chain wheel structure and the second chain wheel structure have the same structure and are positioned on the same vertical direction, and the chain wheel end surfaces of the first chain wheel structure and the second chain wheel structure and the chain wheel end surface of the third chain wheel structure are positioned on different planes.

4. Method according to claim 2, characterized in that the first chain transmission or the second chain transmission is locked with a locking mechanism; the locking mechanism comprises a pallet beam driven by a first driving device to move in a vertical direction; the upper end of the first driving device is fixed on the bracket;

and a toothed inserting plate is fixed on one side of the inserting plate beam and faces towards a chain in the first chain transmission mechanism or the second chain transmission mechanism.

5. The method of claim 2, wherein the first or second wagon is clamped to the rail using a clamping mechanism; the clamping mechanism comprises a hollow first fixing frame fixed on the lower side of the trolley frame, and a clamp driving unit and a clamp unit which are positioned in the first fixing frame; the clamp unit is positioned on the side of the clamp driving unit;

the clamp unit comprises a first clamp subunit and a second clamp subunit, and the first clamp subunit and the second clamp subunit are positioned on two opposite sides of the clamp driving unit; the first clamp subunit comprises a first clamp arm, the second clamp subunit comprises a second clamp arm, the lower end of the first clamp arm and the lower end of the second clamp arm are located on two opposite sides of a track, and the clamp driving unit is used for driving the lower end of the first clamp arm and the lower end of the second clamp arm to move towards or away from the track.

6. The method as claimed in claim 5, wherein the clamp driving unit comprises a first support, the first support is supported at the bottom of the first fixing frame through an elastic member, a second driving device for driving the first support to reciprocate in the vertical direction is connected to the upper side of the first support, and the upper end of the second driving device is fixed at the top of the first fixing frame;

the first clamp subunit further comprises a first connecting rod, and the second clamp subunit further comprises a second connecting rod; the upper end of the first connecting rod is hinged to one side of the first support, the lower end of the first connecting rod is hinged to the upper end of the first clamp arm, the lower end of the first clamp arm is hinged to the bottom of the first fixing frame, and the lower end of the first clamp arm penetrates through an opening in the bottom of the first fixing frame and extends to the side of the track;

the upper end of the second connecting rod is hinged to the other side of the first support, the lower end of the second connecting rod is hinged to the upper end of the second clamp arm, the lower end of the second clamp arm is hinged to the bottom of the first fixing frame, and the lower end of the second clamp arm penetrates through an opening in the bottom of the first fixing frame and extends to the side of the track.

7. The method of claim 3, wherein the frame includes a frame rail and first and second beams and columns vertically established at opposite ends of the frame rail; the side walls of the first beam column and the second beam column are respectively fixed with at least one set of cart chain wheel mechanisms matched with the trolley chain wheel mechanisms, and the cart chain wheel mechanisms and the trolley chain wheel mechanisms are arranged in a one-to-one correspondence manner;

the cart chain wheel mechanism comprises a first cart chain wheel and a second cart chain wheel, and the first cart chain wheel and the second cart chain wheel are located in the same vertical direction.

8. The method according to claim 7, characterized in that the first chain transmission and the second chain transmission have the same structure;

the first chain transmission mechanism comprises at least one first chain in a closed loop, the first end of any one first chain is connected to a trolley chain wheel mechanism corresponding to the second traction trolley, and the second end of the first chain is in a U shape and sequentially bypasses the first trolley chain wheel corresponding to the first beam column, the third chain wheel structure of the first traction trolley and the second trolley chain wheel corresponding to the first beam column, and is connected to the trolley chain wheel mechanism corresponding to the second traction trolley to form the closed loop;

second chain drive includes that at least one is the second chain of closed loop, and the first end of arbitrary second chain is linked extremely the dolly chain wheel mechanism that first traction trolley corresponds, the second end of second chain is the U type and walks around in proper order be located first cart chain wheel that corresponds on the second beam column second traction trolley's third chain wheel structure with be located second cart chain wheel that corresponds on the second beam column, and link extremely dolly chain wheel mechanism that first traction trolley corresponds to form the closed loop.

9. The method of claim 7, wherein the sidewalls of the first and second columns are each provided with at least one set of tensioning mechanisms;

the tensioning mechanism comprises a first tensioning frame and a second tensioning frame which are arranged in parallel, and the first tensioning frame and the second tensioning frame are both vertically arranged;

the first tensioning frame and the second tensioning frame are respectively provided with a hollow slideway, a first bearing support is clamped in the hollow slideway of the first tensioning frame, a second bearing support is clamped in the hollow slideway of the second tensioning frame, and the first cart chain wheel and the second cart chain wheel are arranged between the first bearing support and the second bearing support;

and a first screw rod is fixed on one side of the first bearing support, the first screw rod penetrates through the side wall of the first beam column or the second beam column and is in threaded connection with the first beam column or the second beam column, a second screw rod is fixed on one side of the second bearing support, and the second screw rod penetrates through the side wall of the first beam column or the second beam column and is in threaded connection with the first beam column or the second beam column.

10. Method according to claim 7, characterized in that a drive for driving the first chain drive and the second chain drive is arranged between the first traction carriage and the second traction carriage;

the driving mechanism comprises a motor and at least two driving wheels driven by the motor, and the at least two driving wheels are coaxially arranged.