CN117947662A - Working trolley, tamping car and acceleration and deceleration control method of working trolley - Google Patents

Abstract

The application discloses a working trolley, a tamping car and a working trolley acceleration and deceleration control method, wherein the working trolley comprises the following components: the front arm is arranged centrally relative to the framework, and is of a single-arm structure; the running mechanism is arranged on the second installation part and comprises a running driving member and a wheel pair, wherein the running driving member is in transmission connection with an axle of the wheel pair, and wheels of the driving wheel pair run along the steel rail; the supporting and traversing mechanism is movably connected with the front arm and is used for driving the framework to deflect; the accelerating mechanism is arranged on the main vehicle and behind the framework and used for accelerating the trolley by matching with the travelling driving member; the speed reducing mechanism is arranged on one side of the forearm away from the supporting and traversing mechanism and is used for reducing the speed of the trolley by matching with the walking driving member. The application can improve the acceleration and deceleration performance of the working trolley, does not generate wheel set slip, and has high working efficiency.

Description

Working trolley, tamping car and acceleration and deceleration control method of working trolley

Technical Field

The invention relates to the technical field of railway line maintenance, in particular to a working trolley, a tamping car and an acceleration and deceleration control method of the working trolley.

Background

The tamping operation is one of main operations of ballast railway ballast maintenance, can effectively recover line geometric parameters, improves ballast stability, and ensures train running safety. In order to improve the operation comfort, a continuous tamping vehicle is generally adopted for tamping operation, a tamping working device is positioned on a working trolley, a main vehicle stably and continuously moves during the tamping operation, and the working trolley performs acceleration and deceleration movements relative to the main vehicle.

The working trolley of the existing continuous tamping car only utilizes a driving device connected with a wheel shaft to accelerate and decelerate the working trolley, the driving device acts accelerating force and decelerating force on a wheel set, adhesive force is formed between the wheel set and a track, and if the accelerating force and the decelerating force are larger than the adhesive force, wheels can slip, so that a hydraulic walking motor or a driving motor cannot run at a high speed, the accelerating and decelerating capability is poor, and the operation efficiency is low. In addition, because the weight and the focus of the main car and the trolley are different, and the compression amount of the bogie spring is different, the deflection angles of the main car and the working trolley are generally different on an ultrahigh curve, the front arm of the trolley adopts a double-arm structure, and the working trolley forms four-point support, so that the front arm of the trolley is restrained by the main car, the front arm of the trolley is twisted, and the front arm is deformed.

In summary, how to solve the problems of poor acceleration and deceleration capability and torsion of the front arm of the trolley on the ultrahigh road of the existing continuous tamping trolley is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention is to provide a working trolley which has a strong acceleration and deceleration capability and does not generate wheel set slip, so as to improve the working efficiency.

Another object of the present invention is to provide a tamping car including the above-described working carriage and a working carriage acceleration/deceleration control method applied to the above-described working carriage.

In order to achieve the above object, the present invention provides the following technical solutions:

A work trolley comprising:

the front arm is arranged centrally relative to the framework, and is of a single-arm structure;

The running mechanism is arranged on the second installation part and comprises a running driving member and a wheel pair, wherein the running driving member is in transmission connection with an axle of the wheel pair and is used for driving wheels of the wheel pair to run along steel rails;

The supporting and traversing mechanism is movably connected with the front arm and is used for driving the framework to deflect;

the accelerating mechanism is arranged on the main vehicle and behind the framework and used for accelerating the trolley in cooperation with the travelling driving member;

And the speed reducing mechanism is arranged on one side of the forearm away from the supporting and transversely moving mechanism and is used for reducing the speed of the trolley by matching with the walking driving member.

Preferably, the supporting and traversing mechanism comprises a fixed beam, a traversing assembly, a traversing frame and a decelerating and impacting seat, wherein the fixed beam, the traversing assembly, the traversing frame and the decelerating and impacting seat are connected with the main vehicle, the traversing assembly is movably arranged on the fixed beam along the transverse direction of the steel rail, the traversing frame is arranged at the bottom end of the traversing assembly, the front arm is movably inserted in the traversing frame along the longitudinal direction of the steel rail, and the decelerating and impacting seat is arranged on the traversing assembly.

Preferably, the transverse moving assembly comprises a transverse moving driving member, a transverse moving locking member, a transverse moving beam and a fixed frame, wherein the deceleration impact seat and the transverse moving frame are arranged on the transverse moving beam in parallel from top to bottom;

The transverse beam is movably arranged on the fixed beam through a fixed frame, the fixed end of the transverse driving member is arranged on the fixed beam, and the driving end is arranged on the transverse beam and used for driving the transverse beam to transversely move along the steel rail;

the fixed end of the transverse moving locking member is arranged on the fixed frame, and the driving end is used for blocking the transverse moving beam to move.

Preferably, the acceleration mechanism is centrally arranged behind the frame.

Preferably, the accelerating mechanism comprises an accelerating driving member and a tail buffer member which are distributed in parallel along the vertical direction of the steel rail, and the driving ends of the accelerating driving member and the tail buffer member are arranged towards the tail of the framework and are used for being abutted against the tail of the framework.

Preferably, the accelerating mechanism further comprises two locking tensioning elastic pieces which are connected between the main vehicle and the tail of the member, and the two locking tensioning elastic pieces are symmetrically arranged on two sides of the accelerating driving member or two sides of the tail buffering member.

Preferably, the speed reducing mechanism comprises a speed reducing driving member and a front buffer member, wherein the driving ends of the speed reducing driving member and the front buffer member are arranged towards the speed reducing impact seat and are used for being abutted against the speed reducing impact seat.

Preferably, the travel drive member comprises a hydraulic motor and a drive system thereof, or the travel drive member comprises an electric motor and a drive system thereof.

Preferably, the automobile lifting device further comprises a front top automobile mechanism and a rear top automobile mechanism, wherein the fixed end of the front top automobile mechanism is connected with the main automobile and is in sliding butt joint with the top end of the first installation part, and the fixed end of the rear top automobile mechanism is connected with the top end of the second installation part and is in sliding butt joint with the main automobile.

A tamping car comprising a main car and a working car according to any one of the preceding claims, the working car performing an acceleration and deceleration movement relative to the main car.

Preferably, a stay wire sensor is arranged between the main vehicle and the working trolley and used for detecting the distance between the main vehicle and the working trolley in real time.

An operation trolley acceleration and deceleration control method applied to the operation trolley described in any one of the above, and further including a shoe brake mechanism for stopping movement thereof, the operation trolley acceleration and deceleration control method comprising:

the working trolley accelerates, the driving member is controlled to provide forward thrust for the wheel set, meanwhile, the driving end of the accelerating mechanism is controlled to move to the tail part of the framework, and forward thrust is provided for the tail part of the framework, and the working trolley accelerates forwards;

the working trolley is decelerated, the travelling driving member is controlled to brake reversely, backward thrust is provided for the wheel set, meanwhile, the driving end of the deceleration mechanism is controlled to move to the supporting transverse movement mechanism, backward thrust is provided for the working trolley, and the working trolley is decelerated;

and the working trolley brakes, the shoe brake mechanism is started, the shoe brake mechanism is controlled to hold the wheels of the wheel set tightly, and the working trolley stops moving.

Preferably, after the working trolley accelerates for a period of time, the driving end of the accelerating mechanism can be controlled to be far away from the tail part of the framework, and only the running driving component is controlled to provide forward thrust for the tail part of the component;

the shoe brake mechanism can be started in the deceleration process of the working trolley;

In the braking process of the working trolley, the travelling driving component can be controlled to brake reversely.

Compared with the background art, the working trolley comprises a member, a running mechanism, a supporting and traversing mechanism, an accelerating mechanism and a decelerating mechanism, wherein the head part of the framework is provided with a front arm, the middle part of the framework is provided with a working device such as a track lifting device, a measuring device, a tamping device and a tamping device, and the tail part of the member is provided with the running mechanism; the running driving component in the running mechanism is in transmission connection with the trolley of the wheel pair, so that the wheels of the driving wheel pair run along the steel rail, namely the working trolley is driven to move; the top of the supporting and transversely moving mechanism is fixedly connected with the main vehicle, the bottom of the supporting and transversely moving mechanism is movably connected with the front arm and is used for driving the front arm to transversely deflect so as to realize that the front arm deflects to drive a tamping device on the working trolley to align to the position of a steel rail when the working trolley works in a curve; the accelerating mechanism is arranged on the main vehicle and is arranged at the tail part of the framework, so that the driving end of the accelerating mechanism can directly act on the tail part of the framework to push the working trolley forwards; the speed reducing mechanism is arranged on one side of the forearm far away from the supporting and traversing mechanism, so that the driving end of the speed reducing mechanism directly acts on the supporting and traversing mechanism, and the supporting and traversing mechanism can provide backward thrust for the working trolley through the speed reducing driving component due to the longitudinal limiting effect of the supporting and traversing mechanism on the main trolley along the steel rail.

Therefore, when the working trolley is required to accelerate, the running driving member provides forward thrust for the wheel set, the forward thrust provided by the running driving member is smaller than the adhesive force of the trolley so as to avoid slipping of the wheel set, meanwhile, the accelerating mechanism directly acts on the tail part of the framework so as to provide forward thrust for the working trolley to push the working trolley to move forwards, and the thrust does not act on the wheel set, so that the thrust provided by the accelerating mechanism is not limited by the adhesive force of the trolley, the accelerating mechanism is matched with the running driving member to accelerate, the accelerating performance of the working trolley can be effectively improved, and in addition, the high-speed running driving member can be adopted, so that the maximum rotating speed of the running driving member can meet the maximum speed of the working trolley, the running driving member is prevented from being forcedly dragged and damaged, and the maximum speed of the working trolley is improved; when the working trolley is required to be decelerated, the running driving member is braked reversely to provide backward thrust for the wheel set, the backward thrust provided by the running driving member is smaller than the adhesive force of the trolley to avoid slipping of the wheel set, meanwhile, the decelerating mechanism directly acts on the supporting transverse moving mechanism to provide backward thrust for the working trolley to push the working trolley to move backwards, the thrust does not act on the wheel set, so that the thrust provided by the decelerating mechanism is not limited by the adhesive force of the trolley, and the decelerating mechanism is matched with the running driving member to decelerate, so that the decelerating performance of the working trolley can be effectively improved.

In summary, the application has the following effective effects:

(1) An accelerating mechanism and a decelerating mechanism which are not limited by the adhesive force of the trolley are added to effectively improve the acceleration and deceleration performance of the working trolley, and a high-speed running driving member can be adopted to improve the highest speed of the working trolley.

(2) The forearm adopts a single-arm structure, and the torsion deformation can not be caused.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a front view of a work cart according to the present invention;

FIG. 2 is a top view of a work cart according to the present invention;

FIG. 3 is a schematic view of a loading device on a work cart according to the present invention;

FIG. 4 is a schematic view of a structure of a supporting and traversing mechanism according to the present invention;

FIG. 5 is a schematic diagram of an acceleration mechanism according to the present invention;

Fig. 6 is a schematic structural diagram of a speed reducing mechanism according to the present invention;

FIG. 7 is a schematic diagram of an acceleration/deceleration curve of the working vehicle provided by the invention in an acceleration/deceleration cycle (through two sleepers);

Fig. 8 is a schematic structural view of a tamping car provided by the present invention;

fig. 9 is a forearm torsion schematic of a work cart provided by the invention.

In the figure:

01 is a working trolley, 02 is a main trolley, 03 is a steel rail, and 04 is a sleeper;

1 is a framework, 2 is a running mechanism, 3 is a supporting and transversely moving mechanism, 4 is an accelerating mechanism, 5 is a decelerating mechanism, 6 is a brake shoe braking mechanism, 7 is a front car jacking mechanism, 8 is a rear car jacking mechanism, and 9 is a limiting mechanism;

11 is a forearm, 12 is a first mounting part, 13 is a second mounting part, 121 is a track lifting device, 122 is a measuring device, 123 is a tamping device, 124 is a tamping device, and 125 is a hydraulic system;

21 is a running driving member, 22 is a wheel set, 211 is a hydraulic motor, and 212 is a gear box;

31 is a fixed beam, 32 is a fixed frame, 33 is a transverse beam, 34 is a transverse frame, 35 is a deceleration impact seat, 36 is a transverse driving member, 37 is a transverse locking member, and 38 is a supporting roller;

41 is an acceleration driving member, 42 is a tail buffer member, 43 is a locking tensioning elastic piece;

Reference numeral 51 denotes a deceleration driving member, and 52 denotes a front buffer member.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention provides a working trolley which has strong acceleration and deceleration capability and does not generate wheel set slipping so as to improve the working efficiency.

The invention further provides a tamping car comprising the working trolley and a working trolley acceleration and deceleration control method applied to the working trolley.

In this embodiment, the longitudinal direction is a running direction of the train, that is, a rail extending direction, the vertical direction is a direction perpendicular to a horizontal plane, and the lateral direction is a direction perpendicular to the rail on the horizontal plane. And references to "upper", "lower", "front", "rear", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Referring to fig. 1, the present application provides a work carriage 01, which includes a frame 1, a running mechanism 2, a supporting traversing mechanism 3, an accelerating mechanism 4, and a decelerating mechanism 5.

The frame 1 comprises, from front to rear, a forearm 11, a first mounting portion 12 and a second mounting portion 13 for mounting the working device, which are integrally connected in sequence.

Specifically, referring to fig. 3, the front arm 11 is located at the head of the frame 1, the first mounting portion 12 is located at the middle of the frame 1, the second mounting portion 13 is located at the tail of the frame 1, the front arm 11 is connected with the supporting traversing mechanism 3 by adopting a single-arm structure, the first mounting portion 12 includes a track lifting device 121 and a measuring device 122 mounting area, a tamping device 123 and a tamping device 124 mounting area, the track lifting device 121 and the measuring device 122 mounting area are internally provided with the track lifting device 121 and the measuring device 122, the tamping device 123 and the tamping device 124 mounting area are internally provided with the tamping device 123 and the tamping device 124, the second mounting portion 13 is used for mounting the running mechanism 2, and a hydraulic system 125 is further arranged on the frame 1 for driving the hydraulic driving device.

The running gear 2 is provided in the second mounting portion 13, the running gear 2 comprising a running drive member 21 and a wheel set 21, the running drive member 21 being in driving connection with the axle of the wheel set 21 for driving the wheels of the wheel set 21 along the rail 03.

Specifically, referring to fig. 2, the running mechanism 2 is used for supporting the working trolley 01 to move on the steel rail 03, the running mechanism 2 mainly comprises a wheel set 21 and a running driving member 21, the wheel set 21 is formed by firmly pressing left and right wheels on the same axle, the running driving member 21 is optionally composed of a gear box 212 and a hydraulic motor 211, an output shaft of the gear box 212 is connected with the axle of the wheel set 21, the hydraulic motor 211 is connected with an input shaft of the gear box 212 and is used for driving the axle to rotate so as to drive the working trolley 01 to move along the steel rail 03, and the running driving member is also optionally composed of a coupling and a motor and is used for driving the axle to rotate so as to drive the working trolley 01 to move along the steel rail 03. Preferably, the running mechanism 2 is provided with a limiting mechanism 9, which is not used when the working trolley 01 runs at a high speed, so that the high-speed performance of the working trolley 01 is ensured, and is used when the working trolley 01 runs at an acceleration and deceleration, so as to avoid the influence on the operation quality caused by excessive movement of the working trolley 01 during acceleration and deceleration, and the specific structure of the limiting mechanism 9 can refer to the prior art and is not repeated herein.

The supporting and traversing mechanism 3 is movably connected with the front arm 11 and is used for driving the framework 1 to deflect.

Specifically, referring to fig. 1 and 4, the top of the supporting and traversing mechanism 3 is fixedly connected with the main vehicle 02, the bottom of the supporting and traversing mechanism is movably connected with the front arm 11, when the working vehicle 01 accelerates and decelerates, the front arm 11 can accelerate and decelerate along the longitudinal direction of the steel rail 03 relative to the supporting and traversing mechanism 3, and the supporting and traversing mechanism 3 drives the front arm 11 to deflect transversely when moving transversely, so that when the working vehicle 01 works in a curve, the front arm 11 deflects to drive the tamping device 123 on the working vehicle 01 to align with the steel rail 03, and the supporting and traversing mechanism 3 serves as an acting point of the driving end of the decelerating mechanism 5. In addition, referring to fig. 9, the forearm 11 is of a single-arm structure, forming only three-point support, and the front portion of the forearm 11 is rotatable, so that the forearm 11 is released without causing torsional deformation of the forearm 11.

The acceleration mechanism 4 is intended to be provided on the main vehicle 02 and is arranged behind the frame 1 for accelerating the trolley in cooperation with the travelling drive member 21.

Specifically, referring to fig. 1 and 5, the acceleration mechanism 4 is provided on the host vehicle 02 and arranged at the rear of the frame 1 such that the thrust provided by the acceleration mechanism 4 acts on the rear of the frame 1.

The speed reducing mechanism 5 is arranged on one side of the forearm 11 away from the supporting and traversing mechanism 3 and is used for reducing the speed of the trolley by matching with the walking driving member 21.

Specifically, referring to fig. 1 and 6, the speed reducing mechanism 5 is disposed on the forearm 11 and located behind the supporting and traversing mechanism 3, and the driving end of the speed reducing mechanism 5 movably abuts against the supporting and traversing mechanism 3, and the supporting and traversing mechanism 3 will push the working trolley 01 backward through the speed reducing mechanism 5 due to the longitudinal limiting effect of the main trolley 02 on the rail 03.

Therefore, when the working trolley 01 needs to accelerate, the hydraulic motor 211 provides forward thrust to the wheel set 21, and the forward thrust provided by the hydraulic motor 211 is that the traction force is smaller than the adhesion force of the trolley so as to avoid slipping of the wheel set 21, meanwhile, the accelerating mechanism 4 directly acts on the tail of the framework 1 so as to provide forward thrust to the working trolley 01, so that the working trolley 01 is pushed to move forward, and the thrust does not act on the wheel set 21, so that the thrust provided by the accelerating mechanism 4 is not limited by the adhesion force of the trolley, the accelerating mechanism 4 is matched with the hydraulic motor 211 to accelerate, the accelerating performance of the working trolley 01 can be effectively improved, and in addition, the high-speed hydraulic motor 211 can be adopted, so that the maximum rotation speed of the hydraulic motor 211 can meet the maximum speed of the working trolley 01 so as to avoid forced dragging damage of the travelling driving member 21, and the maximum speed of the working trolley 01 is improved; when the working trolley 01 needs to be decelerated, the hydraulic motor 211 is used for braking reversely, namely the direction of an oil port of the working trolley is changed, if the running driving member 21 is a motor, the hydraulic reverse braking is replaced by resistance braking so as to provide backward thrust for the wheel set 21, the backward thrust provided by the hydraulic motor 211 is smaller than the adhesion force of the trolley so as to avoid slipping of the wheel set 21, meanwhile, the decelerating mechanism 5 directly acts on the supporting transverse moving mechanism 3 so as to provide backward thrust for the working trolley 01, the working trolley 01 is pushed to move backward, the thrust does not act on the wheel set 21, so that the thrust provided by the decelerating mechanism 5 is not limited by the adhesion force of the trolley, and the decelerating cylinder is matched with the hydraulic motor 211 to decelerate, so that the decelerating performance of the working trolley 01 can be effectively improved.

In summary, the application has the following effective effects:

(1) The accelerating mechanism 4 and the decelerating mechanism 5 which are not limited by the adhesive force of the trolley are added to effectively improve the acceleration and deceleration performance of the working trolley 01, and meanwhile, the high-speed running driving member 21 can be adopted to improve the highest speed of the working trolley 01.

(2) The forearm 11 has a single-arm structure, and is free from torsional deformation.

On the basis of the above embodiment, please refer to fig. 1 and 4, the supporting and traversing mechanism 3 includes a fixed beam 31 for connecting with the main vehicle 02, a traversing assembly movably disposed on the fixed beam 31 along the transverse direction of the rail 03, a traversing frame 34 disposed at the bottom end of the traversing assembly, a forearm 11 movably inserted into the traversing frame 34 along the longitudinal direction of the rail 03, and a decelerating and impacting seat 35 disposed on the traversing assembly.

Specifically, the fixed beam 31 is connected with the main car 02, the traversing assembly is movably arranged on the fixed beam 31 along the transverse direction of the steel rail 03, the traversing frame 34 is arranged at the bottom end of the traversing assembly, the front arm 11 can longitudinally accelerate and decelerate along the steel rail 03 in the traversing frame 34 when the working car 01 accelerates and decelerates, and the traversing frame 34 transversely moves to drive the front arm 11 to transversely deflect, so that the front arm 11 deflects to drive the tamping device 123 on the working car 01 to align with the steel rail 03 when the working car 01 works in a curve mode, and the deceleration impact seat 35 is arranged on the traversing frame 34 to serve as an acting point of the driving end of the acceleration driving member 41.

Further, referring to fig. 4, the traverse assembly includes a traverse driving member 36, a traverse locking member 37, a traverse beam 33 and a fixed frame 32, and a deceleration impact seat 35 and a traverse frame 34 are juxtaposed from top to bottom on the traverse beam 33; the transverse beam 33 is movably arranged on the fixed beam 31 through the fixed frame 32, the fixed end of the transverse driving member 36 is arranged on the fixed beam 31, and the driving end is arranged on the transverse beam 33 for driving the transverse beam 33 to move along the transverse direction of the steel rail 03; the fixed end of the traversing locking member 37 is provided on the fixed frame 32, and the driving end is used for blocking the traversing beam 33 from moving.

Specifically, the fixed beam 31 is connected with the main vehicle 02, the two fixed frames 32 are respectively fixed on two sides of the front side surface of the fixed beam 31, two ends of the transverse beam 33 are respectively inserted into the two fixed frames 32, the fixed beam 31 and the transverse beam 33 are parallel to each other and are transversely arranged along the steel rail 03, the transverse driving member 36 is preferably an oil cylinder, the fixed end of the transverse driving member is connected with the fixed beam 31, the driving end of the transverse driving member is connected with the transverse beam 33 so as to drive the transverse beam 33 to transversely move relative to the fixed beam 31, the transverse locking member 37 adopts a stop structure, the transverse locking member is generally composed of an air cylinder and a stop block, the fixed end of the air cylinder is fixed on the fixed frame 32, the driving end of the air cylinder is connected with the stop block, and the air cylinder pushes the stop block to stop the transverse beam 33 when locking is needed, so that the transverse beam 33 is locked relative to the fixed beam 31. In addition, the transverse moving frame 34 is arranged at the bottom end of the transverse moving beam 33, the deceleration impact seat 35 is arranged on the front side surface of the transverse moving beam 33 and above the transverse moving frame 34, the front arm 11 is arranged in the transverse moving frame 34, the transverse moving frame 34 limits the left and right movement of the front arm 11, so that the front arm 11 is driven to transversely deflect when the transverse moving frame 34 transversely moves, the tamping device 123 in the first installation part 12 is driven to align with the position of the steel rail 03 through the deflection of the front arm 11 when the working trolley 01 is in curve operation, and the transverse moving frame 34 does not limit the front arm 11 to move forwards and backwards, so that the front arm 11 can longitudinally accelerate and decelerate along the steel rail 03 in the transverse moving frame 34 when the working trolley 01 is accelerated and decelerated; in addition, the deceleration impact seat 35 is juxtaposed with the traversing frame 34 to ensure that the driving end of the deceleration mechanism 5 mounted on the forearm 11 is urged against the deceleration impact seat 35.

Optionally, support rollers 38 are provided around the lateral frame 34 to provide smooth sliding support for the forearm 11.

In addition, optionally, sliding plates are arranged around the transverse moving frame 34, and the sliding plates are made of wear-resistant materials, so that the forearms 11 can be more stably and slidingly arranged in the transverse moving frame 34, and meanwhile friction of the forearms 11 is reduced; in addition, the transverse moving frame 34, the supporting roller 38 and the deceleration impact base 35 are integrally arranged on the transverse moving beam 33, so that the processing is convenient, and the structural stability is enhanced.

On the basis of the embodiment, the accelerating mechanism 4 is centrally arranged behind the frame 1, so that the thrust provided by the accelerating mechanism 4 acts on the central position of the tail of the frame 1, namely the central position of the tail of the working trolley 01, and unbalanced load can be prevented, so that the working trolley 01 moves more stably.

On the basis of the above embodiment, referring to fig. 5, the acceleration mechanism 4 includes an acceleration driving member 41 and a tail buffering member 42 which are arranged in parallel along the vertical direction of the steel rail 03, and both driving ends are disposed towards the tail of the frame 1 for abutting against the tail of the frame 1.

Specifically, the types of the acceleration driving member 41 and the tail buffering member 42 are not unique, and an oil cylinder, an air cylinder, an electric push rod, and the like can be adopted, so that the acceleration driving member 41 and the tail buffering member 42 are respectively described by taking an acceleration oil cylinder and a buffering acceleration oil cylinder as examples, and piston rods of the acceleration oil cylinder and the buffering acceleration oil cylinder are arranged towards the tail of the framework 1 so as to be telescopically moved between the main vehicle 02 and the tail of the framework 1. In addition, the buffer accelerating cylinder is arranged above or below the accelerating cylinder, and the buffer accelerating cylinder are arranged in parallel along the vertical direction of the steel rail 03, so that the buffer force of the buffer accelerating cylinder acting on the tail of the framework 1 is located at the center of the tail of the framework 1, the situation that the unbalanced load of the working trolley 01 cannot occur is ensured, the piston rod of the buffer accelerating cylinder moves to the tail of a component and abuts against the tail of the component when the accelerating cylinder is in a non-journey state or the program control is wrong, and the buffer accelerating cylinder forms buffer between the main trolley 02 and the working trolley 01 when the buffer accelerating cylinder collides, so that the damage of a mechanical structure is avoided.

On the basis of the above embodiment, please refer to fig. 5, the accelerating mechanism 4 further includes two locking tensioning elastic pieces 43 which are both connected between the main vehicle 02 and the tail portion of the member, and the two locking tensioning elastic pieces are symmetrically located at two sides of the accelerating driving member 41 or two sides of the tail buffering member 42, so as to ensure that the tensioning force borne by the tail portion of the frame 1 is centered, avoid the unbalanced load of the working vehicle 01, and provide the pretightening force when the locking tensioning elastic pieces 43 are used in the locking state of the working vehicle 01, so that the main vehicle 02 and the working vehicle 01 form flexible connection, and avoid mutual collision during high-speed running of the two.

On the basis of the above embodiment, referring to fig. 6, the reduction mechanism 5 includes a reduction driving member 51 and a front cushioning member 52, both of which have driving ends disposed toward the reduction impact seat 35 for abutting against the reduction impact seat 35.

Specifically, the types of the deceleration driving member 51 and the front buffer member 52 are not unique, and an oil cylinder, an air cylinder, an electric push rod, and the like can be used for explaining the deceleration driving member 51 and the front buffer member 52 by taking the deceleration oil cylinder and the buffering deceleration oil cylinder as examples, wherein the buffering deceleration oil cylinder and the deceleration oil cylinder are arranged on the front arm 11 side by side, and the piston rod of the buffering deceleration oil cylinder moves to the deceleration impact seat 35 and abuts against the deceleration impact seat when the deceleration oil cylinder is in the journey or the program control is wrong, and the buffering is formed between the main vehicle 02 and the working trolley 01 by the buffering deceleration oil cylinder when the collision occurs, so that the damage of a mechanical structure is avoided.

On the basis of the embodiment, the application further comprises a front jack mechanism 7 and a rear jack mechanism 8, wherein the fixed end of the front jack mechanism 7 is connected with the main vehicle 02, the driving end is slidably abutted to the top end of the first mounting part 12, and the fixed end of the rear jack mechanism 8 is connected with the top end of the second mounting part 13, and the driving end is slidably abutted to the main vehicle 02.

Specifically, as shown in fig. 1, the front top cart mechanism 7 and the rear top cart mechanism 8 are both composed of a pressing driving member and a connecting rod, the pressing driving member is an oil cylinder, one end of the oil cylinder of the front top cart mechanism 7 is connected with the main cart 02, the other end of the oil cylinder is connected with the top end of the connecting rod, a pulley is arranged at the bottom end of the connecting rod, and the pulley of the front top cart mechanism 7 is slidably arranged at the top end of the first installation part 12; one end of an oil cylinder of the rear jack mechanism 8 is connected with the top end of the second installation part 13, the other end of the oil cylinder is connected with the bottom end of a connecting rod, and the top end of the connecting rod is slidably arranged on the main car 02 so that the main car can move along with the acceleration and deceleration of the working trolley 01. Like this, roof car mechanism utilizes the hydro-cylinder to provide certain down force for framework 1 through the connecting rod, increases work dolly 01 overall weight to promote work dolly 01 adhesive force, be favorable to work dolly 01 acceleration and deceleration control, avoid work dolly 01 to be jacked by the tamping reaction force when tamping operation simultaneously.

On the basis of the above embodiment, please refer to fig. 1, the present application further comprises a shoe brake mechanism 6 provided at the second mounting portion 13, preferably using hydraulic lever brake, also using wind lever brake, or unit brake, to directly act on the wheel set 21 so as to stop the movement of the working carriage 01.

Referring to fig. 8, the invention further provides a tamping machine, which comprises a main machine 02 and the working trolley 01, wherein the working trolley 01 performs acceleration and deceleration movements relative to the main machine 02.

In addition, a wire pulling sensor is arranged between the main vehicle 02 and the working trolley 01 and used for detecting the distance between the main vehicle 02 and the working trolley 01 in real time. When the detection distance reaches a certain preset value, the running mechanism 2, the accelerating mechanism 4 or the decelerating mechanism 5 are started to be mutually matched and switched, so that the working trolley 01 moves at a reasonable distance relative to the main trolley 02, and the two are prevented from collision.

The working trolley acceleration and deceleration control method is applied to any one of the working trolleys, and the working trolley further comprises a brake shoe braking mechanism for stopping movement of the working trolley, and the working trolley acceleration and deceleration control method comprises the following steps:

The working trolley accelerates, controls the travelling driving member to provide forward thrust for the wheel set, simultaneously controls the driving end of the accelerating driving member to move to the tail part of the member, provides forward thrust for the tail part of the member, and accelerates the working trolley forwards;

the working trolley is decelerated, the running driving member is controlled to brake reversely, backward thrust is provided for the wheel set, meanwhile, the driving end of the deceleration driving member is controlled to move to the deceleration impact seat, backward thrust is provided for the working trolley, and the working trolley is decelerated;

The working trolley brakes, the shoe brake mechanism is started, the shoe brake mechanism is controlled to clamp the wheels of the wheel set, and the working trolley stops moving.

Specifically, referring to fig. 7, the working trolley 01 can be specifically divided into A, B, C, D, E stages by two sleepers 04 in one acceleration and deceleration period. The control valve element of the working trolley 01 in the A stage is not responded, and the speed of the working trolley 01 is unchanged. The B-stage working trolley 01 accelerates under the combined action of the hydraulic motor 211 and the accelerating cylinder, the hydraulic motor 211 provides forward thrust for the wheel set 21, and the forward thrust provided by the hydraulic motor 211 is that the traction force is smaller than the adhesion force of the trolley so as to avoid slipping of the wheel set 21, meanwhile, the accelerating cylinder directly acts on the tail part of the framework 1 so as to provide forward thrust for the working trolley 01 to push the working trolley 01 to move forward, and the thrust does not act on the wheel set 21, so that the thrust provided by the accelerating driving member 41 is not limited by the adhesion force of the trolley, and the accelerating cylinder is matched with the hydraulic motor 211 to accelerate, so that the accelerating performance of the working trolley 01 can be effectively improved. Stage C is the response time of the deceleration actuated valve member. The hydraulic motor 211 in the D stage is used for reverse braking, that is, the direction of the oil port is exchanged, if the running driving member 21 is a motor, the hydraulic reverse braking is replaced by resistance braking so as to provide backward thrust for the wheel set 21, the backward thrust provided by the hydraulic motor 211 is smaller than the adhesion force of the trolley so as to avoid slipping of the wheel set 21, meanwhile, the decelerating cylinder directly acts on the decelerating impact seat 35 so as to provide backward thrust for the working trolley 01, so that the working trolley 01 is pushed to move backward, and the thrust does not act on the wheel set 21, therefore, the thrust provided by the decelerating driving member 51 is not limited by the adhesion force of the trolley, and the decelerating cylinder is matched with the hydraulic motor 211 to decelerate, so that the decelerating performance of the working trolley 01 can be effectively improved. And in the E stage, the trolley is continuously decelerated to be stationary under the action of the brake shoe braking mechanism 6, and the braking force is smaller than the adhesion force of the trolley, so that the trolley wheel pair 21 is prevented from slipping.

On the basis of the embodiment, after the working trolley accelerates for a period of time, the driving end of the accelerating mechanism can be controlled to be far away from the tail part of the framework, and only the running driving component is controlled to provide forward thrust for the tail part of the component; in the process of decelerating the working trolley, a shoe brake mechanism can be started; in the braking process of the working trolley, the travelling driving component can be controlled to brake reversely.

Specifically, the acceleration cylinder may be closed in stage B to enable the acceleration cylinder to withdraw in advance, the hydraulic motor 211 drives the working trolley 01 to accelerate to a target, in addition, the shoe brake structure may be started in stage D, and the hydraulic motor 211 may be continuously started in stage E to reversely brake or decelerate the cylinder.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The working trolley, the tamping vehicle and the method for controlling acceleration and deceleration of the working trolley provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims (13)

1. A work trolley (01), characterized in that it comprises:

the device comprises a framework (1), a front arm (11), a first mounting part (12) and a second mounting part (13) which are sequentially connected into a whole from front to back, wherein the front arm (11) is arranged centrally relative to the framework (1), and the front arm (11) is of a single-arm structure;

The running mechanism (2) is arranged on the second installation part (13), the running mechanism (2) comprises a running driving member (21) and a wheel pair (21), and the running driving member (21) is in transmission connection with an axle of the wheel pair (21) and is used for driving wheels of the wheel pair (21) to run along a steel rail (03);

the supporting and traversing mechanism (3) is movably connected with the front arm (11) and is used for driving the framework (1) to deflect;

an acceleration mechanism (4) arranged on the main vehicle (02) and behind the framework (1) for accelerating the trolley in cooperation with the travelling driving member (21);

And the speed reducing mechanism (5) is arranged on one side of the forearm (11) far away from the supporting and traversing mechanism (3) and is used for reducing the speed of the trolley by matching with the walking driving member (21).

2. The working trolley (01) according to claim 1, wherein the supporting and traversing mechanism (3) comprises a fixed beam (31) for connecting with the main trolley (02), a traversing assembly, a traversing frame (34) and a decelerating and impacting seat (35), wherein the traversing assembly is movably arranged on the fixed beam (31) along the transverse direction of the steel rail (03), the traversing frame (34) is arranged at the bottom end of the traversing assembly, the front arm (11) is movably inserted into the traversing frame (34) along the longitudinal direction of the steel rail (03), and the decelerating and impacting seat (35) is arranged on the traversing assembly.

3. The work carriage (01) according to claim 2, wherein the traverse assembly includes a traverse driving member (36), a traverse locking member (37), a traverse beam (33) and a fixed frame (32), the deceleration impact seat (35) and the traverse frame (34) being juxtaposed from top to bottom to the traverse beam (33);

the transverse beam (33) is movably arranged on the fixed beam (31) through a fixed frame (32), and the fixed end of the transverse driving member (36) is arranged on the fixed beam (31), and the driving end is arranged on the transverse beam (33) and used for driving the transverse beam (33) to transversely move along the steel rail (03);

The fixed end of the transverse moving locking member (37) is arranged on the fixed frame (32), and the driving end is used for blocking the transverse moving beam (33) from moving.

4. The working trolley (01) according to claim 1, characterized in that the acceleration mechanism (4) is arranged centrally behind the frame (1).

5. The working trolley (01) according to claim 4, characterized in that the acceleration mechanism (4) comprises an acceleration driving member (41) and a tail cushioning member (42) which are arranged in parallel along the vertical direction of the steel rail (03), and both driving ends are arranged towards the tail of the frame (1) for abutting against the tail of the frame (1).

6. The working trolley (01) according to claim 5, characterized in that the acceleration mechanism (4) further comprises two locking tensioning springs (43) both connected between the main trolley (02) and the tail of the member, symmetrically located on either side of the acceleration driving member (41) or on either side of the cushioning member (42).

7. The working trolley (01) according to claim 2, characterized in that the reduction mechanism (5) comprises a reduction drive member (51) and a front cushioning member (52), both drive ends being arranged towards the reduction impact seat (35) for abutment against the reduction impact seat (35).

8. The working trolley (01) according to claim 1, characterized in that the running drive member (21) comprises a hydraulic motor (211) and its drive system, or the running drive member (21) comprises an electric motor and its drive system.

9. The working trolley (01) according to any one of claims 1 to 8, further comprising a front jack mechanism (7) and a rear jack mechanism (8), wherein a fixed end of the front jack mechanism (7) is connected to the main vehicle (02) and a driving end is slidably abutted to a top end of the first mounting portion (12), and a fixed end of the rear jack mechanism (8) is connected to a top end of the second mounting portion (13) and a driving end is slidably abutted to the main vehicle (02).

10. A tamping vehicle, characterized by comprising a main vehicle (02) and a working trolley (01) according to any one of the preceding claims 1 to 9, said working trolley (01) being subjected to an acceleration and deceleration movement with respect to said main vehicle (02).

11. The tamping car of claim 10, characterized in that a wire sensor is arranged between the main car (02) and the working trolley (01) for detecting the distance between the two in real time.

12. A method for controlling acceleration and deceleration of a work vehicle, which is applied to the work vehicle according to any one of claims 1 to 9, and further includes a shoe brake mechanism for stopping movement thereof, the method comprising:

the working trolley accelerates, the driving member is controlled to provide forward thrust for the wheel set, meanwhile, the driving end of the accelerating mechanism is controlled to move to the tail part of the framework, and forward thrust is provided for the tail part of the framework, and the working trolley accelerates forwards;

the working trolley is decelerated, the travelling driving member is controlled to brake reversely, backward thrust is provided for the wheel set, meanwhile, the driving end of the deceleration mechanism is controlled to move to the supporting transverse movement mechanism, backward thrust is provided for the working trolley, and the working trolley is decelerated;

and the working trolley brakes, the shoe brake mechanism is started, the shoe brake mechanism is controlled to hold the wheels of the wheel set tightly, and the working trolley stops moving.

13. The method of claim 12, wherein after the working vehicle accelerates for a period of time, the driving end of the acceleration mechanism is controlled to be far away from the tail of the frame, and only the travelling driving member is controlled to provide forward thrust to the tail of the member;

the shoe brake mechanism can be started in the deceleration process of the working trolley;

In the braking process of the working trolley, the travelling driving component can be controlled to brake reversely.