CN108725505B

CN108725505B - Tractor vehicle

Info

Publication number: CN108725505B
Application number: CN201810469874.XA
Authority: CN
Inventors: 李勇智; 刘恩怀; 方俊; 韦浩; 胡志辉; 代宗霖
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: 2023-09-01
Anticipated expiration: 2038-05-16
Also published as: CN108725505A

Abstract

The present invention provides a tractor comprising: a frame capable of sliding along a track, the frame comprising a first beam column and a second beam column; the frame main beam is provided with a first traction trolley and a second traction trolley which can slide, and the first traction trolley and the second traction trolley are positioned between the first beam column and the second beam column; the first traction trolley is respectively linked with the first beam column and the second traction trolley through a first chain transmission mechanism, the second traction trolley is respectively linked with the second beam column and the first traction trolley through a second chain transmission mechanism, and the first traction trolley and the second traction trolley both comprise two sets of clamping mechanisms capable of being locked on a track through two sides of the track and a locking mechanism used for locking any point position on the first chain transmission mechanism/the second chain transmission mechanism. The tractor has lighter dead weight, low energy consumption and good adaptability to heavy-load traction working conditions.

Description

Tractor vehicle

Technical Field

The present invention relates to traction devices for track systems, and more particularly to a tractor.

Background

Large quantities of production materials such as coal, ore, grain, petroleum and the like are usually transported by a freight train, and the power for running the freight train is provided by a locomotive. In ports, mines and freight yards, cargo handling operations are required for freight trains, and during the operations, freight trains are required to move slowly in the handling areas. Because the locomotive has higher manufacturing cost and use cost, the locomotive is used for separating the freight train from the locomotive after the locomotive pulls the freight train to the area, and the unpowered freight train moves in the loading and unloading area and is completed by other traction equipment in order to improve the utilization rate of the locomotive and reduce the use cost. At present, the common train traction mode is wire rope shunting winch traction and conventional tractor traction.

The shunting winch pulls a winch which can slide on a track by utilizing a winch and a steel wire rope, and the winch pulls a train to run. The disadvantages of this approach are: 1) The occupied area is large, and the requirement on basic bearing is high; 2) The utilization rate is low for a fixed-point use system; 3) The maintenance workload is large and the cost is high.

Conventional tractors are small rail-mounted vehicle equipment similar to locomotives, and the self weight of the tractors provides positive pressure required by friction driving of wheels and rails, and the maximum traction force capable of being provided by the tractors depends on the self weight of the whole tractor of the conventional tractors and the friction coefficient of wheels and rails of the conventional tractors. Because the friction coefficient of the wheels and the steel rail is difficult to improve, the traction force can be improved only by increasing the dead weight of the tractor, and the mode inevitably leads to higher manufacturing cost and use cost of the tractor under the requirement of high traction force.

Therefore, how to reduce the manufacturing and use costs of the train traction equipment and effectively improve the traction capability of the traction equipment is a technical problem that needs to be solved by those skilled in the art at present.

Disclosure of Invention

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

According to one aspect of the present invention, there is provided a tractor comprising: the frame capable of sliding along the track comprises a first beam column and a second beam column which are vertically arranged at two ends of a main beam of the frame;

the frame main beam is provided with a first traction trolley and a second traction trolley which can slide, the first traction trolley and the second traction trolley are arranged along the extending direction of the track, and the first traction trolley and the second traction trolley are positioned between the first beam column and the second beam column;

the first traction trolley is respectively linked with the first beam column and the second traction trolley through a first chain transmission mechanism, the second traction trolley is respectively linked with the second beam column and the first traction trolley through a second chain transmission mechanism, and the first traction trolley and the second traction trolley both comprise two sets of clamping mechanisms which can be locked on the track through two sides of the track, and a locking mechanism for locking any chain of the first chain transmission mechanism and the second chain transmission mechanism which reach a locking position point.

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

the traction force is derived from the friction between the clamping mechanism and the rail side, which is dependent on the positive pressure applied by the clamp and the coefficient of friction between the clamp and the rail side. Because the importance of the outer side surface of the rail relative to the rail top surface is lower, the clamping force required by the clamp with the corresponding required friction force can be designed according to the working condition requirements during design, and the friction coefficient between the clamp and the outer side surface of the rail can be improved by proper treatment of the clamp jaw. Compared with the traction mode of providing positive pressure required by traction by increasing the dead weight, the traction vehicle provided by the invention has lighter dead weight and lower manufacturing cost, avoids the limitation of the maximum bearing capacity of the track foundation, and has lower running energy consumption due to lighter dead weight. Because the convenient bidirectional traction function of the tractor has push-pull characteristics, the tractor can be well adapted to various loading operation conditions. The traction transmission system provided by the invention adopts chain transmission, and the traction vehicle provided by the invention has good adaptability to heavy-load traction working conditions due to the excellent characteristics of the chain under the traction working conditions. The power output of the tractor comes from the driving device, and the speed of the tractor can be well regulated by being provided with the frequency modulation motor.

Drawings

FIG. 1 is a schematic illustration of a tractor in accordance with an embodiment of the present invention;

FIG. 2 is a schematic illustration of a frame of a tractor according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a tractor according to an embodiment of the present invention;

FIG. 4 is a schematic view of a locking mechanism of a tractor according to an embodiment of the present invention;

FIG. 5 is a schematic view of a clamping mechanism of a tractor according to an embodiment of the invention;

FIG. 6 is a schematic diagram of a clamping mechanism of a tractor according to an embodiment of the invention;

FIG. 7 is a schematic diagram of a chain drive mechanism of a tractor in accordance with an embodiment of the invention;

fig. 8 is a schematic structural view of a tensioning mechanism of a tractor according to an embodiment of the present invention.

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

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

300-a first traction cart; 301-a first support plate; 302-a third trolley sprocket; 303-pulley; 304-a locking mechanism; 305-a clamping mechanism; 306-first drive means; 307-support; 308-insert plate beams; 309 tooth insert plate; 310-a first fixing seat; 311-a second drive device; 312-a first link; 313-a first mount; 314—a first jawarm; 315-first roller a; 316-a second support; 317-an elastic member; 318-first roller B; 319-first roller C; 320-a first trolley frame; 321-a second support plate; 322-a second link; 323-second jawarms; 324-a second roller B; 325-second roller a; 326-a second roller C;

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

500-a driving mechanism; 600-travelling wheels; 700-hydraulic system.

Detailed Description

The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.

First, second, etc. before the names of components in the present invention are just distinguished names unless otherwise specified.

Referring to fig. 1, a tractor is shown that can be used in a track system; the tractor includes a frame 100, the frame 100 being mounted on a track, and the frame 100 being movable along the track. Referring to fig. 2, the frame 100 includes a frame main beam 101, a first beam column 102, and a second beam column 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 rail, and are located at opposite ends of the frame main beam 101, respectively.

In order to make the structure of the frame 100 more stable, 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 four-sided column frame structure. It will be appreciated that the first beam 102, the second beam 106 and/or the side truss structure 103 may be formed as frames in a "field" configuration, or may be formed as other frame configurations, as long as it facilitates the formation of a stable vehicle frame 100 and the mounting of other components thereon.

Meanwhile, coupler connecting structures 104 are further arranged at two ends of the frame main beam 101, and couplers 105 are linked at the ends of the coupler connecting structures 104. The coupler 105 is adapted to be fixedly coupled to other devices that require traction by the tractor. It will be appreciated that the coupling structure 104 may also be a frame structure, as long as coupling 105 is facilitated.

Referring to fig. 1, a first traction cart 300 and a second traction cart are slidably mounted on a frame main 101. The first traction cart 300 and the second traction cart are arranged on the frame main beam 101 along the extending direction of the track, and the first traction cart 300 and the second traction cart are positioned between the first beam column 102 and the second beam column 106. Both the first traction cart 300 and the second traction cart are capable of sliding on the frame main beam 101, i.e. moving position relative to the frame 100.

The tractor further includes 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 linked through a first chain transmission mechanism 400; the second beam column 106, the second traction trolley and the first traction trolley are linked through a second chain transmission mechanism. Specifically, during the linking process, the first traction cart 300 is positioned between the first beam column 102 and the second traction cart, which is positioned between the first traction cart and the second beam column 106. In the above-mentioned linking process, the first traction cart 300 is not necessarily specifically located between the first beam 102 and the second traction cart, and the first traction cart 300 and the second traction cart may be interchanged and linked in the same linking manner.

To achieve the drive tractor movement position relative to the track, each of the first and second tractor 300, 304 includes a clamping mechanism 305 and a locking mechanism. The clamping mechanism 305 is capable of clamping the track from both sides of the track, thereby achieving the purpose of securing the first traction cart 300 and/or the second traction cart relative to the track. Meanwhile, since the first traction trolley 300 and the second traction trolley can both move in position relative to the frame 100, when the first traction trolley 300 or the second traction trolley is clamped on the track, the position of the first traction trolley 300 or the second traction trolley relative to the track is unchanged.

To cooperate with the first traction cart 300/the second traction cart to achieve the purpose of driving the traction cart to move, locking mechanisms 304 are arranged on both the first traction cart 300 and the second traction cart. The locking mechanism 304 is used to lock the chain on either of the first chain drive mechanism 400/the second chain drive mechanism that reaches the lock position point. For example, the locking mechanism 304 of the first traction cart 300 locks the first chain drive mechanism 400 chain. When a point of the first chain drive mechanism is locked by the locking mechanism 304, no change in position of the point of the first chain drive mechanism 400 occurs with respect to the first traction cart 300.

Referring to fig. 1, the operation state of the first traction cart 300 is exemplified by the state in which the clamping mechanism 305 of the first traction cart 300 is clamped to the rail and the locking mechanism 304 of the first traction cart 300 locks the first chain transmission mechanism 400. The clamping mechanism 305 of the first traction cart 300 is clamped on the track, so that the position of the first traction cart 300 relative to the track is unchanged; meanwhile, when the first chain transmission mechanism rotates clockwise, the locking mechanism 304 correspondingly locks the position of a certain point of the first chain transmission mechanism 400. When the first chain transmission mechanism 400 continues to operate, the first beam column 102 is driven to move in a direction away from the first traction cart 300, i.e. 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 with the frame 100 to move in a lower right direction in fig. 1; at the same time, the second traction cart moves on the frame 100 toward the first beam 102 at the same rate of movement relative to the first beam 102 as the second beam 106 moves toward the first traction cart 300.

When the clamping mechanism and the locking mechanism of the second traction trolley adopt the same operation mode as the clamping mechanism and the locking mechanism of 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 in the original direction, so that the traction trolley continuously moves in a certain direction. It will be appreciated that the direction of travel of the first chain drive/second chain drive is adjusted, i.e. the direction of travel of the tractor can be adjusted.

As the frame 100 moves downward and to the right in fig. 1, the first beam 102 moves away from the first traction cart 300, and at the same time, the second traction cart approaches the first traction cart. To continuously move the frame 100 forward, the tractor is continuously moved forward. When the second traction trolley approaches to the first traction trolley 300 to a certain distance and is reduced to a preset threshold value, the clamping mechanism and the locking mechanism of the first traction trolley 300 are loosened, the clamping mechanism of the second traction trolley is clamped on the track, the second traction trolley does not change in position relative to the track, and meanwhile the locking mechanism of 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; at the same time, the distance between the second beam column 106 and the second traction cart is reduced, and the second traction cart drives the frame 100 to continue to advance 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 on the track is released, and the locking state of the second chain transmission mechanism is released. The movement modes of the first traction trolley and the second traction trolley are circularly and alternately performed so as to draw other devices to continuously move forward together.

In a specific embodiment, two sliding rails are disposed on the main frame 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 at the sides of the first traction trolley and the second traction trolley; further, the pulley 303 corresponds to the position of the rail, enabling the pulley 303 to slide or rotate on the rail to enable the first and/or second traction dollies to move position relative to the frame 100. Pulley 303 may be one or more; the plurality of pulleys 303 may be formed in one or two rows as long as the first and second traction dollies 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 rail 101.

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

The second traction cart includes a second cart frame and at least one set of second brackets. The second traction trolley preferably comprises two groups of second brackets, and the two groups of second brackets are arranged in parallel with each other. The first carriage frame 320 has the same structure as the second carriage 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 groups.

The first carriage frame 320 of the first traction carriage 300 is exemplified by a structure having two sets of first brackets. Either set of first brackets includes a first bracket 301 and a second bracket 321. The first and second brackets 301 and 321 are mounted on the upper side of the first cart frame 320. The first and second stay 301 and 321 are parallel to each other and vertically installed at the upper side of the first cart frame 320. The plate surfaces of the first and second support plates 301 and 321 are parallel to the extending direction of the rail, facilitating the installation of the first and second chain transmission mechanisms, enabling connection between the first and second traction dollies, the frame 100 and the first/second chain transmission mechanisms, and ensuring that the transmission direction of the chain transmission mechanism is parallel to the extending direction of the rail. The upper end of the first cart frame 320 may or may not have a planar structure, so long as two sets of first brackets of the first cart frame 320 can be fixedly mounted.

When two sets of first brackets are arranged on the first traction trolley 300, two sets of first trolley chain wheel mechanisms are correspondingly arranged on the first traction trolley 300; the two sets of first trolley chain mechanisms are a first trolley chain mechanism A and a first trolley chain mechanism B respectively. 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 first supports. The first trolley chain wheel mechanism A and the first trolley chain wheel mechanism B are only distinguished by names, have the same structure and are both first trolley chain wheel mechanisms positioned on the first traction trolley. The first trolley chain wheel mechanism is used for linking the first traction trolley 300, the second traction trolley, the first beam column 102 and the first chain transmission mechanism 400/the second chain transmission mechanism. When the first chain transmission 400 and the second chain transmission are operated, the first traction cart 300 can be moved together with the frame 100 or the first traction cart 300 can be moved relative to the frame 100 with the cooperation of the first traction cart 300 and the second traction cart.

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

When two groups of second brackets of the second traction trolley are arranged, two sets 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 two support plates of one group of second brackets; a second trolley chain wheel mechanism B is arranged between the two support plates of the other group of second supports. The second trolley sprocket mechanism a and the second trolley sprocket mechanism B are only name-differentiated, and have the same structure and are both second trolley sprocket mechanisms positioned on the second traction trolley. The second trolley chain wheel mechanism has the same or corresponding structure with the first trolley chain wheel mechanism. The second trolley chain wheel mechanism is used for linking the first traction trolley 300, the second traction trolley, the second beam column 106 and the first chain transmission mechanism/the second chain transmission mechanism.

It can be appreciated that the plate surfaces of the two support plates of the first support/second support are perpendicular to the first beam column/second beam column and parallel to the extending direction of the track, so that the sprocket mechanism arranged between the two support plates is convenient for realizing the linkage of the first chain transmission mechanism 400/second chain transmission mechanism with other structures.

In a specific embodiment, the first and second trolley chain mechanisms have the same or corresponding structure. Any of the trolley chain mechanisms includes a first sprocket structure, a second sprocket structure, and a third sprocket 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 sprocket structure includes a third center shaft and a third trolley sprocket 302 sleeved on the third center 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 an up-down direction, and the chain wheel end face of the first trolley chain wheel and the chain wheel end face of the second trolley chain wheel are positioned in the same plane. The chain wheel end face of the third trolley chain wheel and the chain wheel end face of the first trolley chain wheel are positioned in different planes; the sprocket end face of the third trolley sprocket is also located in a different plane than the sprocket end face of the second trolley sprocket. The sprocket end face of the third trolley sprocket is located in a different plane than the sprocket end faces of the first trolley sprocket/second trolley sprocket, facilitating the linking of the first chain drive 400/second chain drive to the first traction trolley 300 and the second traction trolley.

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

The first traction trolley and the second traction trolley have the same or corresponding structure, namely: when the third trolley chain wheel of the first traction trolley is close to the first support plate of the first support of the first traction trolley and the third trolley chain wheel of the second traction trolley is close to the first support plate of the first support of the second traction trolley, 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 support of the first traction trolley and the third trolley chain wheel of the second traction trolley is close to the second support plate of the first support of the second traction trolley, the first traction trolley and the second traction trolley are of corresponding structures.

In one particular embodiment, referring to FIG. 4, locking mechanism 304 includes a first drive 306, a fork strap beam 308, and a toothed fork 309. The first driving device 306 may be hydraulically driven, pneumatically driven, or driven, for example, a hydraulic cylinder or a pneumatic cylinder, so long as the reciprocating motion of the blade beam 308 in a certain direction is satisfied. Taking the first traction cart 300 as an example, one end of the first driving device 306 is fixedly connected with the cart frame, and the other end of the first driving device can be fixed with the spile beam 308 through the support 307.

A toothed insert 309 is fixed to one side of the insert beam 308. The toothed structure of the toothed insert 309 faces the chain in the first chain drive 400/second chain drive. Taking the locking mechanism 304 of the first traction cart 300 as an example. When the first chain transmission mechanism 400 needs to be locked, the first driving device 306 drives the insert plate beam 308 to move towards the chain direction of the first chain transmission mechanism 400, so that the tooth-shaped structure of the tooth-shaped insert plate 309 is driven to be inserted into the gap of the chain, and the position of the gap of the chain of the first chain transmission mechanism 400 is not changed relative to the first traction trolley 300. When the clamping mechanism 305 of the first tractor 300 is clamped on the rail, the first beam 102 can be driven to move towards/away from the first tractor 300 when the first chain transmission mechanism 400 continues to operate, so as to drive the relative positions of other devices connected with the tractor to change.

Specifically, the toothed insert plates 309 fixedly arranged on the insert plate beam 308 may be one or a plurality of, and the number of the toothed insert plates is matched with the number of chains in the transmission structure of the first chain transmission mechanism 400/the second chain transmission mechanism. The driving means for driving the blade beam 308 may be one set or may be multiple sets, as long as the operation state of the blade beam 308 can be satisfied. Meanwhile, the tooth form 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 tractor is identical in construction to the locking mechanism 304 of the first tractor. The locking mechanism 304 of the first traction cart is used to lock the first chain drive 400 and the locking mechanism 304 of the second traction cart is used to lock the second chain drive.

In a specific embodiment, referring to fig. 5, a clamping mechanism 305 for clamping a rail laterally of the rail includes a first mount 310, a clamp driving unit, and a clamp unit. The clamp driving unit and the clamp unit are located inside the first fixing frame 310; the clamp unit is located laterally 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; and, the lower side of the first fixing frame 310 has an opening facing the rail.

The clamping unit comprises a first clamping subunit and a second clamping subunit. The first clamp subunit and the second clamp subunit are disposed on opposite sides of the clamp drive unit. The first clamp subunit and the second clamp subunit have the same structure.

The first clamp subunit includes a first clamp arm 314; the second clamp subunit includes a second clamp 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 to drive the lower end of the first clamp arm 314 and the lower end of the second clamp arm 323 to move in a direction approaching or separating from the rail.

When the clamp driving unit drives the lower end part of the first clamp arm 314 and the lower end part of the second clamp arm 323 to move in a direction approaching to the track, the clamp driving unit can be clamped on the track, so that 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 clamping mechanism to the rail can be released.

In a specific embodiment, referring to fig. 5, the clamp driving unit includes a second driving device 311, a first support 313, and an elastic member 317. The second driving device 311, the first support 313 and the elastic member 317 are all located inside the first fixing frame 310.

The elastic member 317 is supported at the bottom of the first fixing frame 310; the first support 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 reciprocation of the first support 313 in the vertical direction. In addition, the elastic member 317 may be directly supported on the bottom of the first fixing frame 310; a second support 316 may also be fixedly disposed at the bottom of the first fixing frame 310; the second support 316 is located inside the first fixing frame 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 the upper side of the first support 313. The lower end of the second driving device 311 is connected with the first support 313, and the upper end of the second driving device 311 is fixed at 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 means 311 may be hydraulically driven, pneumatically driven, or otherwise driven, as long as it is sufficient to drive the first support 313 to reciprocate in the vertical direction.

Taking the structure of the first clamp subunit 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 by 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. And, the first link 312 is located above the first jawarm 314. The lower end of the first jawarm 314 extends to the side of the rail through the opening at the bottom of the first fixing frame 310.

Likewise, referring to fig. 6, the second clamping subunit includes a second link 322, a second clamping arm 323, a second roller a325, a second roller B324, and a second roller C326. The upper end of the second link 322 is hinged to the other side of the first support 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 with the upper end of the second jawarm 323 by a second roller a 325. And, the second link 322 is located above the second jawarm 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 support 313 and are symmetrical with respect to the first support 313; the first and second jawarms 314, 323 are located on either side 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 same track.

When the second driving device 311 drives the first support 313 to move downwards, both 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 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 in a direction away from the first support 313; that is, the upper end portion of the first jawarm 314 moves in a direction away from the first support 313, thereby moving the lower end portion of the first jawarm 314 in a direction approaching the rail; at the same time, the position where the second link 322 is connected to the second jawarm 323 is also moved in a direction away from the first support 313; that is, the upper end portion of the second clamp arm 323 moves in a direction away from the first support 313, thereby moving the lower end portion of the second clamp arm 323 in a direction approaching the rail.

That is, the lower end portion of the first jawarm 314 and the lower end portion of the second jawarm 323 are both moved in a direction approaching the rail. Since the lower end of the first jawarm 314 and the lower end of the second jawarm 323 are both located laterally of the track and on 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 be close to the track, the purpose of clamping the track from the side of the track is achieved.

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, driving the upper end of the first clamp arm 314 and the upper end of the second clamp arm to move in a direction approaching the first support 313, so that the lower end of the first clamp arm 314 and the lower end of the second clamp arm 323 both move in a direction away from the rail, thereby releasing the clamping state of the rail.

It will be appreciated that the first traction cart 300 and the second traction cart each include two sets of gripping mechanisms 305. Taking the structure of the first traction cart 300 as an example, two sets of clamping mechanisms are a first clamping mechanism a and a 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 track. It will be appreciated that the tractor may also be used in a monorail system; when used in a monorail system, each of the first traction cart 300/the second traction cart is provided with a set of gripping mechanisms 305.

When the first traction cart 300/the second traction cart needs to be clamped on the track, the second driving device 311 of the clamping mechanism 305 on any traction cart drives the first support 313 to move downwards, and then drives the lower end part of the first clamp arm 314 and the lower end part of the second clamp arm 323 to move towards the direction approaching to the track so as to be clamped on the track from the side of the track, and the first traction cart 300/the second traction cart cannot change in 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 away from the track, so as to drive the first clamp subunit to move away from the track and release the clamping state of the track.

In one particular embodiment, referring to FIG. 7, at least one set of cart sprocket mechanisms is fixedly disposed on the side walls of both the first beam 102 and the second beam 106 in coordination with the linking of the frame 100 to the first tractor 300/second tractor. Two sets of cart sprocket mechanisms are preferably fixedly disposed on the side walls of both the first beam column 102 and the second beam column 106.

The cart chain wheel mechanisms on the frame 100 are matched with and arranged in one-to-one correspondence with the cart chain wheel mechanisms on the traction cart 300/the second traction cart. The number of cart sprocket mechanisms on the first beam 102 or the second beam 106 is the same as the number of chains in the first chain drive/second chain drive. Preferably, two sets of cart sprocket mechanisms are provided on each of 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 or the two sets of cart chain wheel mechanisms on the second beam column 106 are arranged in parallel.

Specifically, when two sets of trolley sprocket mechanisms are respectively disposed on the first traction trolley 300 and the second traction trolley, and two sets of cart sprocket mechanisms are respectively disposed 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 are respectively a first cart sprocket mechanism a and a first cart sprocket mechanism B, and the two sets of cart sprocket mechanisms on the second beam column 106 are respectively a second cart sprocket mechanism a and a second cart sprocket mechanism B. The first cart sprocket mechanism A, the first trolley sprocket mechanism A, the second trolley sprocket mechanism A and the second cart sprocket mechanism A are arranged along the same straight line direction; the first cart sprocket mechanism B, the second cart sprocket mechanism B and the second cart sprocket mechanism B are arranged in the same straight line direction.

Each cart chain wheel mechanism has 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 large sprocket 205 and the second large sprocket are arranged in an up-down orientation. The sprocket end face of the first cart sprocket 205 and the sprocket end face of the second cart sprocket are located in the same plane, and the sprocket end faces of the first cart sprocket 205 and the second cart sprocket are located in the same plane as the sprocket end faces of the corresponding first cart sprocket and second cart sprocket, or the sprocket end faces of the first cart sprocket 205 and the second cart sprocket are located in the same plane as the sprocket end faces of the corresponding third cart sprocket. 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 linking between the first beam column 102/second beam column 106 and the first tractor 300/second tractor.

Specifically, the first traction trolley and the second traction trolley are linked with the cart chain wheel mechanisms on the first beam column 102 and the second beam column 106 through chains in the first chain transmission mechanism and the second chain transmission mechanism.

In a specific embodiment, referring to fig. 7, the first chain drive 400 and the second chain drive for connecting the frame 100 to the first traction cart/the second traction cart have the same structure. Taking the structure of the first chain transmission mechanism 400 as an example. The first chain drive 400 includes at least one chain in a closed loop. The first chain transmission mechanism 400 preferably has two chains in a closed loop; the winding structures of the two chains are identical.

When the first chain transmission mechanism 400 includes two chains, it is a first chain a401 and a first chain B402. Taking the first chain a as an example. The first end of the first chain a401 is linked to a second trolley chain mechanism a of a second traction trolley; the second end of the first chain a401 is first U-shaped and bypasses the first cart sprocket of the first cart sprocket mechanism a, then is U-shaped and bypasses the third cart sprocket of the first cart sprocket mechanism a, then is U-shaped and bypasses the second cart sprocket of the first cart sprocket mechanism a, and finally is linked to the second traction cart, and is connected with the first end of the first chain a401 to form a closed loop structure. Likewise, the first cart sprocket mechanism B on the first beam column 102, the first cart sprocket mechanism B on the first tractor 300, and the second cart sprocket mechanism B on the second tractor are linked in the same manner by the second chain B404 in a closed loop.

Likewise, the second chain drive is connected to link the second beam 106, the second traction cart, and the first traction cart in the same manner as the chain in the first chain drive 400 is wound. When the second chain transmission mechanism includes two chains, it is a second chain a403 and a second chain B404. Take the second chain a403 as an example. The first end of the second chain a403 is linked to the first trolley chain mechanism a of the first traction trolley; the second end of the second chain a403 is first U-shaped and bypasses the first cart sprocket of the second cart sprocket mechanism a, then is U-shaped and bypasses the third cart sprocket of the second cart sprocket mechanism a, then is U-shaped and bypasses the second cart sprocket of the second cart sprocket mechanism a, and finally is linked to the first traction cart and is connected with the first end of the second chain a403 to form a closed loop structure. Likewise, the second cart sprocket mechanism B on the second beam column 106, the second cart sprocket mechanism B on the second traction cart, the first cart sprocket mechanism B on the first traction cart are linked in the same manner by the second chain B404 in a closed loop.

For a complete description of the linking status of the first chain drive 400 and the second chain drive to the frame 100, the first traction cart 300, and the second traction cart, a specific linking manner is exemplified below. Wherein, the first traction trolley 300 and the second traction trolley are provided with two sets of trolley chain wheel mechanisms; two sets of cart sprocket mechanisms are arranged on the first beam column 102 and the second beam column 106; the first chain drive 400 and the second chain drive each have two chains as an example. With the first cart sprocket positioned above the second cart sprocket.

Taking the example of the first trolley sprocket being located above the second trolley sprocket. A first end of a first chain a in the first chain drive mechanism 400 bypasses a first trolley sprocket of a corresponding second trolley sprocket mechanism a of the second traction trolley; the second end of the first chain a is first U-shaped to bypass a first cart sprocket corresponding to the first cart sprocket mechanism a on the first beam column 102, then U-shaped to bypass a third cart sprocket corresponding to the first cart sprocket mechanism a of the first traction cart 300, then U-shaped to bypass a second cart sprocket corresponding to the second cart sprocket mechanism a of the first cart sprocket mechanism a, and then to bypass a second cart sprocket corresponding to the second cart sprocket mechanism a of the second traction cart, and is connected with the first end of the first chain a to form a closed loop.

At the same time, the first end of the second chain A403 of the second chain transmission mechanism bypasses the first trolley sprocket of the first trolley sprocket mechanism A corresponding to the first traction trolley; the second end of the second chain a403 is first U-shaped to bypass the first cart sprocket on the second beam 106 corresponding to the second cart sprocket mechanism a, then U-shaped to bypass the third cart sprocket of the second cart sprocket mechanism a corresponding to the second traction cart, then U-shaped to bypass the second cart sprocket of the second cart sprocket mechanism a, then bypass the second cart sprocket of the first cart sprocket mechanism a corresponding to the first cart sprocket, and is connected to the first end of the second chain a403 to form a closed loop.

Likewise, a first end of a first chain B in the first chain drive mechanism 400 bypasses a first trolley sprocket of a second trolley chain mechanism B corresponding to the second traction trolley; the second end of the first chain B is first U-shaped to bypass the first cart sprocket of the first beam column 102 corresponding to the first cart sprocket mechanism B, then U-shaped to bypass the third cart sprocket of the first cart sprocket mechanism B corresponding to the first traction cart 300, then U-shaped to bypass the second cart sprocket of the first cart sprocket mechanism B, then bypass the second cart sprocket of the second cart sprocket mechanism B corresponding to the second traction cart, and connected to the first end of the first chain B to form a closed loop.

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

Referring to fig. 7, for example, the first chain transmission 400 and the second chain transmission operate in the same driving direction to the right. When the clamping mechanism 305 of the first traction trolley 300 is clamped on the track, the locking mechanism 304 of the first traction trolley 300 locks a certain point on the chain in the first chain transmission mechanism 400, so that the position of the first traction trolley 300 relative to the track is not changed, meanwhile, as the chain of the first chain transmission mechanism 400 is driven to the right, the whole chain in the first chain transmission mechanism 400 continuously operates, so that the distance between the first traction trolley 300 and the second beam column 106 is reduced, the distance between the first chain transmission mechanism 400 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 frame 100 to move to the right as a whole; meanwhile, since the frame 100 moves rightward, the second traction cart moves rightward together with the frame 100, thereby driving other devices connected to the frame 100 to move rightward together.

When the second traction trolley approaches the first traction trolley 300, and the distance between the second traction trolley and the first traction trolley is reduced to a preset threshold value, the clamping mechanism 305 of the first traction trolley 300 clamps 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 traction cart is clamped to both sides of the track, and the locking mechanism 304 of the second traction cart locks the chain of the second chain drive mechanism. At this time, the position of the second traction cart relative to the track is not changed, and because 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 rightward, so as to drive the frame 100 to move continuously rightward, and then the first traction cart 300 and the frame 100 move continuously rightward together, so that the frame 100 can move continuously in the same direction.

Similarly, when the purpose of left traction is required, only the driving directions of the first chain transmission mechanism 400 and the second chain transmission mechanism need be changed. Specifically, by the action of the clamping mechanism 305 and the locking mechanism 304 of the first traction trolley 300 and the action of the clamping mechanism 305 and the locking mechanism 304 of the second traction trolley, the two traction trolleys are alternately matched, so that the frame 100 can continuously move towards a certain direction, and the purpose of traction is achieved.

It will be appreciated that when the first chain transmission mechanism 400 includes two chains, the second chain transmission mechanism also includes two chains, the first traction cart includes two sets of first brackets and two sets of first cart sprocket mechanisms, the second traction cart includes two sets of second brackets and two sets of second cart sprocket mechanisms, two sets of cart sprocket mechanisms and at least two sets of tensioning mechanisms are correspondingly disposed on the first beam column, two sets of sprocket mechanisms and at least two sets of tensioning mechanisms are disposed on the second beam column, and simultaneously, two toothed spiles are disposed on the spigot beam of the first traction cart, and two toothed spiles are disposed on the spigot beam of the second traction cart.

In a specific embodiment, referring to fig. 8, to increase the efficiency of operation of the first chain drive mechanism 400/the second chain drive mechanism, at least one set of tensioning mechanisms 200 are provided at respective positions on the first beam 102 and the second beam 106 that correspond to the sprocket mechanisms. Preferably, two sets of first beam 102 and second beam 106 are each provided. 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 chain wheel mechanisms; each tensioning mechanism 200 is located between the first beam 102 and the second beam 106. The structure of each set of tensioning mechanisms 200 is identical.

Any one of the 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 beam column 102/second beam column 106, and one side of the second tensioning frame 207 is also fixed to the side wall of the first beam column 102/second beam column 106.

The first tensioning frame 206 and the second tensioning frame 207 each have a hollow slideway. The hollow slideway is arranged along the horizontal direction, and the extending direction of the hollow slideway is parallel to the extending direction of the track. Specifically, the hollow sliding structure may have an opening at a side of the first tension frame 206/the second tension frame 207, and a sliding rail is disposed at a top and/or a bottom of the opening of the first tension frame 206/the second tension frame 207. A first bearing support 202 is engaged in the hollow slideway of the first tensioning frame 206, and a second bearing support is engaged in the hollow slideway of the second tensioning frame 207; the first bearing support 202 is capable of sliding in position along the extending direction of the rail within the hollow runner of the first tension frame 206, and the second bearing support is capable of sliding in position along the extending direction of the rail within the hollow runner of the second tension frame 207. The top and/or bottom of the first/second bearing support 202/202 is provided with a slideway, respectively, so that the first/second bearing support 202/202 is able to slide in position with respect to the first/second tensioning frame 206/207.

Specifically, a first screw 203 is fixed to a side of the first bearing support 202, which is close to the first beam column 102/the second beam column 106. The first screw 203 passes through the side wall of the first beam column 102/second beam column 106 and is screwed on the first beam column 102/second beam column 106 by bolts. A second lead screw 204 is fixed to the second bearing support on a side of the second bearing support adjacent to the first beam column 102/second beam column 106. The second screw 204 passes through the side wall of the first beam column 102/second beam column 106 and is screwed to the first beam column 102/second beam column 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 rotational shaft. The first screw 203 and the second screw 204 are driven to move in the horizontal direction by turning the corresponding screws, 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 exemplified. The first tensioning frame 206 and the second tensioning frame 207 are both vertically arranged, and one side of the first tensioning frame 206 is fixed on the side wall of the first beam column 102 through a first screw 203, and one side of the second tensioning frame 207 is also fixed on the side wall of the first beam column 102 through a second screw 204. A first bearing support 202 is engaged in the hollow slideway of the first tension frame 206, a second bearing support is engaged in the hollow slideway of the second tension frame 207, and a first cart sprocket 205/second cart sprocket is arranged between the first bearing support 202 and the second bearing support through a rotating shaft. As 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 backing plate 201 may be added between the first tension frame 206/second tension frame 207 and the first beam column 102/second beam column 106. When the tightness state 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 rotating bolts for screwing the first screw rod 203 and the second screw rod 204 to enable the first screw rod 203 and the second screw rod 204 to move towards or away from the first traction trolley.

In a specific 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 drive mechanism is located between the first traction cart and the second traction cart. 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 the output shaft of the motor. The output shaft of the motor is perpendicular to the extending direction of the rail. And the four driving wheels are symmetrically arranged on two sides of the motor in pairs. 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 a chain linked with the driving wheel to rotate, so that the traction trolley is driven to move.

In a specific embodiment, the bottom of the frame 100 is provided with road wheels. Specifically, two rows of running wheels 600 are provided at the bottom of the frame 100, and the positions of the two rows of running wheels 600 are respectively corresponding to the two rails. Namely, a row of walking wheels are correspondingly arranged above each track, the walking wheels are clamped on the tracks, and the walking wheels slide or roll along the tracks, so that the frame 100 can move relative to the tracks.

According to the tractor disclosed by the invention, two traction trolleys capable of sliding relative to the frame 100 are arranged on the frame 100 along the extending direction of the track, each traction trolley is provided with the corresponding clamping mechanism 305 and the 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 are matched with the clamping mechanism 305 and the locking mechanism 304 of the second traction trolley to drive the frame to move along the extending direction of the track, so that other devices connected with the traction trolley are pulled to move along the extending direction of the track.

The invention also provides a traction method of the tractor, wherein the tractor comprises a frame capable of sliding along the track, and a first traction trolley and a second traction trolley which are arranged on the frame in a sliding manner along the extending direction of the track; the frame, the first traction trolley and the second traction trolley are connected 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 the track from the side of the track, the first traction trolley simultaneously locks the first chain transmission mechanism or the second traction trolley locks the second chain transmission mechanism, 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 part of the frame is reduced to a preset threshold value, releasing the clamping state of the first traction trolley on the track, enabling the second traction trolley to be clamped on the track from the side of the track, correspondingly changing 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, enabling the first chain transmission mechanism and the second chain transmission mechanism to continue to operate, and driving the frame and the first traction trolley to move in the same direction as in the step 1 so as to enable the track tractor to continue to move forwards along the track;

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

the steps 1-3 are circularly executed, so that the rail tractor continuously moves forwards along the rail in the same direction until reaching the destination.

For a complete description of the traction method of the tractor, the complete linking and driving method of the tractor is exemplified below. Wherein, the first traction trolley 300 and the second traction trolley are provided with two sets of trolley chain wheel mechanisms; two sets of cart sprocket mechanisms are arranged on the first beam column 102 and the second beam column 106; the first chain drive 400 and the second chain drive each have two chains as an example. With the first cart sprocket positioned above the second cart sprocket.

Taking the example of the first trolley sprocket being located above the second trolley sprocket. A first end of a first chain a401 in the first chain drive mechanism 400 bypasses a first trolley sprocket of a corresponding second trolley sprocket wheel a of the second traction trolley; the second end of the first chain a401 is first U-shaped and bypasses the first cart sprocket corresponding to the first cart sprocket mechanism a on the first beam column 102, then is U-shaped and bypasses the third cart sprocket corresponding to the first cart sprocket mechanism a of the first traction cart 300, then is U-shaped and bypasses the second cart sprocket corresponding to the second cart sprocket mechanism a of the first cart sprocket mechanism a, and then bypasses the second cart sprocket corresponding to the second cart sprocket mechanism a of the second traction cart, and is connected with the first end of the first chain a401 to form a closed loop.

Likewise, a first end of a first chain B402 in the first chain drive 400 bypasses a first trolley sprocket of a corresponding second trolley sprocket of the second traction trolley; the second end of the first chain B402 is first U-shaped to bypass the first cart sprocket of the first beam column 102 corresponding to the first cart sprocket mechanism B, then U-shaped to bypass the third cart sprocket of the first cart sprocket mechanism B corresponding to the first traction cart 300, then U-shaped to bypass the second cart sprocket of the first cart sprocket mechanism B, then bypass the second cart sprocket of the second cart sprocket mechanism B corresponding to the second traction cart, and is connected to the first end of the first chain B402 to form a closed loop.

At the same time, the first end of the second chain B404 of the second chain transmission mechanism bypasses the first trolley sprocket of the first trolley sprocket mechanism B corresponding to the first traction trolley; the second end of the second chain B404 is first U-shaped to bypass the first cart sprocket of the second beam column 106 corresponding to the second cart sprocket mechanism B, then U-shaped to bypass the third cart sprocket of the second cart sprocket mechanism B corresponding to the second traction cart, then U-shaped to bypass the second cart sprocket of the second cart sprocket mechanism B, then bypass the second cart sprocket of the first cart sprocket mechanism B corresponding to the first traction cart, and connected to the first end of the second chain B404 to form a closed loop.

The motion control mode of the tractor can be various, and when the transmission directions of the chain transmission mechanisms are different, the motion direction of the tractor can be correspondingly changed. Taking clockwise rotation of the chain drive as an example.

For example, sports form 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 traction trolley advances to the right in the 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 second chain transmission mechanism to be locked by the locking mechanism of the second traction trolley, so that the traction trolley continues to move 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 on the track and the second chain transmission mechanism;

the cycle A1-3 is executed, causing the tractor to continue moving forward until the destination is reached.

Motion mode II

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 traction trolley 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 first chain transmission mechanism, and enabling the clamping mechanism of the second traction trolley to be clamped on the track, so that the locking mechanism of the first traction trolley locks the first chain transmission mechanism, and the traction trolley continues to move leftwards;

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

The loop execution B1-3 causes the tractor to continue moving to the left until the destination is reached.

Movement pattern three

When the locking mechanisms of the first traction trolley and the second traction trolley are not locked with 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 the clamping mechanism of one traction trolley is clamped on the track, the relative position of the traction trolley, the first traction trolley and the second traction trolley is not changed.

Motion pattern 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 traction trolley cannot change in position relative to the track, but the first traction trolley and the second traction trolley can change in position relatively, and are close to each other or far away from each other.

The following is an illustration of the first motion mode. Referring to fig. 7, for example, the first chain transmission 400 and the second chain transmission operate in the same driving direction to the right. When the clamping mechanism 305 of the first traction trolley 300 is clamped on the track, the locking mechanism 304 of the first traction trolley 300 locks a certain point on the chain in the first chain transmission mechanism 400, so that the position of the first traction trolley 300 relative to the track is not changed, meanwhile, as the chain of the first chain transmission mechanism 400 is driven to the right, the whole chain in the first chain transmission mechanism 400 continuously operates, so that the distance between the first traction trolley 300 and the second beam column 106 is reduced, the distance between the first chain transmission mechanism 400 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 frame 100 to move to the right as a whole; meanwhile, since the frame 100 moves rightward, the second traction cart moves rightward together with the frame 100, thereby driving other devices connected to the frame 100 to move rightward together.

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

The above-described clamping state of the first traction carriage 300 to the rail, the locking state of the first chain transmission mechanism, and the clamping state of the second traction carriage to the rail, and the locking state of the second chain transmission mechanism are cyclically performed, so that the traction carriage is continuously moved in the same direction until reaching the destination.

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, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tractor, comprising: the frame capable of sliding along the track comprises a first beam column and a second beam column which are vertically arranged at two ends of a main beam of the frame;

the first traction trolley is respectively linked with the first beam column and the second traction trolley through a first chain transmission mechanism, the second traction trolley is respectively linked with the second beam column and the first traction trolley through a second chain transmission mechanism, and the first traction trolley and the second traction trolley both comprise two sets of clamping mechanisms capable of being locked on a track from two sides of the track and a locking mechanism for locking any chain of the first chain transmission mechanism and the second chain transmission mechanism reaching a locking position point;

the trolley chain wheel mechanism comprises a first chain wheel structure, a second chain wheel structure and a third chain wheel 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 in the same vertical direction, and the chain wheel end surfaces of the first chain wheel structure and the second chain wheel structure are positioned in different planes with the chain wheel end surface of the third chain wheel structure;

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 mechanism matched with the cart chain wheel mechanism, and the cart chain wheel mechanisms are arranged in one-to-one correspondence;

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 positioned in the same vertical direction;

the first chain transmission mechanism and the second chain transmission mechanism have the same structure;

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

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

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

the bracket 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 used for linking the first chain transmission mechanism/the second chain transmission mechanism is arranged between the first support plate and the second support plate.

3. The tractor of claim 2, wherein the locking mechanism includes a deck beam driven by the first drive to move in a vertical direction; the upper end of the first driving device is fixed on the bracket;

one side of the insert plate beam is fixed with a tooth-shaped insert plate, and the tooth-shaped insert plate faces to a chain in the first chain transmission mechanism/the second chain transmission mechanism.

4. The tractor of claim 2, wherein the clamping mechanism includes a hollow first mount secured to the underside of the trolley frame and a clamp drive unit and clamp unit located inside the first mount; the clamp unit is positioned at the side of the clamp driving unit;

The clamp unit comprises a first clamp subunit and a second clamp subunit which have the same structure, 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 part of the first clamp arm and the lower end part of the second clamp arm are positioned on two opposite sides of a track, and the clamp driving unit is used for driving the lower end part of the first clamp arm and the lower end part of the second clamp arm to move in a direction approaching to or separating from the track.

5. The tractor as claimed in claim 4, wherein the clamp driving unit includes a first support, the first support being supported at the bottom of the first fixing frame by an elastic member, a second driving device for driving the first support to reciprocate in a vertical direction being connected to an upper side of the first support, and an upper end of the second driving device being fixed to a 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 extends to the side of the track through an opening in the bottom of the first fixing frame;

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 extends to the side of the track through an opening in the bottom of the first fixing frame.

6. The tractor of claim 1, wherein the side walls of the first and second beams 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 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 a first cart chain wheel/a second cart chain wheel is arranged between the first bearing support and the second bearing support;

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

7. The tractor of claim 1, wherein a drive mechanism for driving the first and second chain drive mechanisms is disposed between the first and second tractor dollies;

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.