CN109573865B

CN109573865B - Railway crane and auxiliary supporting device thereof

Info

Publication number: CN109573865B
Application number: CN201710910862.1A
Authority: CN
Inventors: 于跃; 孙凯; 刘永; 白圣男
Original assignee: CRRC Qiqihar Rolling Stock Co Ltd; China Railway Corp
Current assignee: CRRC Qiqihar Rolling Stock Co Ltd; China State Railway Group Co Ltd
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2024-06-07
Anticipated expiration: 2037-09-29
Also published as: CN109573865A

Abstract

The invention discloses a railway crane and an auxiliary supporting device thereof, wherein the auxiliary supporting device comprises a cross beam, a longitudinal beam and a plurality of wheel assemblies which are arranged at intervals along the longitudinal direction, the wheel assemblies can run on a railway track, and the longitudinal beam is connected with an axle of each wheel assembly; the cross beam is arranged on the longitudinal beam, can be used for being inserted into a supporting leg supporting oil cylinder of a crane body of the railway crane, and can rotate in a vertical plane relative to the longitudinal beam. The auxiliary supporting device provided by the invention is independent of the crane body, and the structure of the existing railway crane, especially the bogie part, is not required to be changed, so that the structure of the bogie is greatly simplified; when the crane is used, partial load of the crane body can be shared, so that the pressure of a single wheel to a railway track is reduced, and the service life of the railway track is prolonged; the beam of the auxiliary supporting device also has a passive leveling function, and can effectively prevent rollover and overturning phenomena in the running process.

Description

Railway crane and auxiliary supporting device thereof

Technical Field

The invention relates to the technical field of railway cranes, in particular to a railway crane and an auxiliary supporting device thereof.

Background

The railway crane is rescue equipment for guaranteeing the safe operation of a railway, and is mainly used for rescue of accidents such as derailment or rollover of locomotives and vehicles.

However, when the railway crane hangs a heavy object, the whole weight of the railway crane is large, and the railway crane can generate large pressure on a railway track when running on a railway, so that the service life of the railway track is influenced, and particularly when a rescue task is executed on a railway bridge, the railway bridge is extremely likely to be broken when the railway crane hangs the heavy object to run because the bearing capacity of the railway bridge is far smaller than that of a roadbed, so that a new safety accident is caused.

Aiming at the technical problems, the prior art adopts the scheme that the number of wheels of the railway crane is increased, so that the pressure of a single wheel to a railway track is reduced. However, under the condition that the number of bogie shafts is unchanged, increasing the number of wheels inevitably increases the complexity of bogie structure, so that the length of the bogie is overlong and the weight is large, and further the dead weight of the railway crane is overlarge, the whole length of the railway crane is longer, the difficulty of operation and operation is increased, and meanwhile, the cost of the railway crane is higher.

Therefore, how to provide a railway crane, which reduces the pressure of a single wheel to a railway track on the basis of not changing the structure of the existing bogie, is still a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a railway crane and an auxiliary supporting device thereof, wherein the auxiliary supporting device can share part of the load of a crane body so as to reduce the pressure of a single wheel of the crane body and the auxiliary supporting device on a railway track.

In order to solve the technical problems, the invention provides an auxiliary supporting device for a railway crane, which comprises a cross beam, a longitudinal beam and a plurality of wheel assemblies arranged at intervals along the longitudinal direction, wherein the wheel assemblies can run on a railway track, and the longitudinal beam is connected with an axle of each wheel assembly; the cross beam is arranged on the longitudinal beam, can be used for being inserted into a supporting leg supporting oil cylinder of a crane body of the railway crane, and can rotate in a vertical plane relative to the longitudinal beam.

When the auxiliary supporting device is used, the auxiliary supporting device can be arranged on a railway track in front of or behind the crane body, the supporting leg supporting oil cylinder of the crane body can be inserted on the cross beam of the auxiliary supporting device, and the auxiliary supporting device is driven to synchronously operate, so that the auxiliary supporting device can share part of the load of the crane body, the pressure of a single wheel of the crane body and the auxiliary supporting device on the railway track can be reduced, and the service life of the railway track is prolonged.

In addition, the auxiliary supporting device is independent of the crane body, that is, the structure of the existing railway crane, particularly the bogie part, is not required to be changed, so that the structure of the bogie is greatly simplified, the cost of the railway crane is favorably controlled, and the running and operation difficulties of the railway crane are reduced.

More importantly, the auxiliary supporting device also has a passive leveling function, when external force acts on the cross beam, the cross beam can rotate in a vertical plane relative to the longitudinal beam, so that the cross beam can be always kept at a substantially horizontal position in the movement process, and rollover and overturning phenomena in the operation process are effectively prevented.

Optionally, the device further comprises a guide beam, wherein the guide beam is arranged between the cross beam and the longitudinal beam, one of the lower end surface of the cross beam and the upper end surface of the guide beam is provided with a guide block, the other guide block is provided with a guide surface, the guide block can be abutted with the guide surface, and when the cross beam is driven by external force to rotate in a vertical surface, the guide block can slide on the guide surface; and a limiting mechanism is further arranged between the cross beam and the guide beam so as to limit the longitudinal relative displacement between the cross beam and the guide beam.

Optionally, the number of the guide blocks and the number of the guide surfaces are two; the two guide surfaces are respectively arranged at the two transverse end parts of the guide beam and extend downwards in an inclined mode, the two guide blocks are transversely arranged on the lower end face of the cross beam at intervals, and the two guide blocks are in butt joint with the two guide surfaces in a one-to-one correspondence mode.

Optionally, one of the lower end part of the cross beam and the upper end part of the guide beam is provided with a limit column, the other is provided with a limit hole, and the limit column and the limit hole form the limit mechanism; when the limiting column and the limiting hole are in an inserting state, the longitudinal relative displacement of the cross beam and the guide beam can be limited, and the limiting column can also move in the limiting hole along the transverse direction.

Optionally, the device further comprises a positioning pin, wherein the positioning pin can position one end of the limiting column inserted into the limiting hole so as to limit the vertical relative displacement of the cross beam and the guide beam.

Optionally, the guide beam is rotatable relative to the wheel assembly in a plane of the railway track.

Optionally, the guide beam is mounted on the bottom beam through a center plate.

Optionally, supporting seats are arranged at two end parts of the cross beam, and the installation height of the supporting seats is lower than the top of the cross beam; the support seat is internally provided with a slot, and the supporting leg supporting cylinder of the crane body can be inserted into the slot.

Optionally, the support base is hinged to the cross beam and can rotate along a hinge shaft between the support base and the cross beam, so that the support base can be switched between a use position and a folding position.

The invention also provides a railway crane, which comprises a crane body and the auxiliary supporting device; when the auxiliary supporting device is used, the auxiliary supporting device is positioned on a railway track in front of or behind the crane body, the supporting leg supporting oil cylinder of the crane body is inserted into the cross beam, and the crane body can drive the auxiliary supporting device to synchronously run on the railway track and can drive the cross beam to rotate in a vertical plane so as to level the cross beam.

Since the auxiliary supporting device has the technical effects as described above, the railway crane with the auxiliary supporting device has similar technical effects, and thus, the description thereof is omitted herein.

Drawings

FIG. 1 is a schematic view of a first embodiment of an auxiliary supporting device according to the present invention;

FIG. 2 is a view in the direction A-A of FIG. 1

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a view of FIG. 3 in the direction B-B;

FIG. 5 is a view of FIG. 3 in the direction C-C;

FIG. 6 is a schematic view of a second embodiment of the auxiliary supporting device according to the present invention;

FIG. 7 is a schematic view of a connection structure between the support base and the cross beam in FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a schematic view of the auxiliary supporting device in FIG. 8 in a retracted position of the supporting seat;

FIG. 10 is a schematic view of a third embodiment of an auxiliary supporting device according to the present invention;

FIG. 11 is a schematic view of the auxiliary supporting device in FIG. 10 in a retracted position of the supporting seat;

FIG. 12 is a top view of FIG. 10;

Fig. 13 is a schematic structural view of the railway crane in a use position.

The reference numerals in fig. 1-13 are illustrated as follows:

The auxiliary supporting device, the 11 cross beam, the 111 guide block, the 112 limit column, the 12 longitudinal beam, the 13 wheel assembly, the 131 wheel, the 132 axle, the 14 guide beam, the 141 guide surface, the 142 locating pin, the 15 bottom beam, the 16 center plate, the 17 supporting seat and the 171 slot are arranged in the auxiliary supporting device;

2, a crane body and a 21-leg supporting oil cylinder;

S railway track.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

The term "plurality" as used herein refers to a plurality, typically two or more, of indefinite quantities; and when "a number" is used to denote the number of a certain number of components, it does not necessarily denote the same number of components.

Here, the running direction of the railway crane or the extending direction of the railway track is taken as the longitudinal direction, the direction close to the head is the front, and the direction close to the tail is the rear in the longitudinal direction; in the horizontal plane, the direction perpendicular to the longitudinal direction is transverse, in the transverse direction, the direction of the left hand of the driver is left, and the direction of the right hand of the driver is right by taking the driver as a reference; in the vertical plane, the direction away from the ground is upward, the direction close to the ground is downward, and the up-down direction is also called vertical.

Referring to fig. 1-5, fig. 1 is a schematic structural diagram of a first embodiment of an auxiliary supporting device according to the present invention, fig. 2 is a view in A-A direction of fig. 1, fig. 3 is a top view of fig. 1, fig. 4 is a view in B-B direction of fig. 3, and fig. 5 is a view in C-C direction of fig. 3.

As shown in fig. 1, the present invention provides an auxiliary supporting device for a railway crane, comprising a cross beam 11, a longitudinal beam 12 and a plurality of wheel assemblies 13 arranged at intervals in a longitudinal direction, wherein the wheel assemblies 13 comprise an axle 132 and wheels 131 arranged at two ends of the axle 132; the number of the longitudinal beams 12 may be two or more, and the longitudinal beams 12 may be connected to the axles 132 of the respective wheel assemblies 13, specifically, may be connected via bearings 133; the cross member 11 is attached to the side member 12 and is rotatable in a vertical plane with respect to the side member 12.

When the auxiliary supporting device 1 is used, the auxiliary supporting device 1 can be positioned on a railway track S in front of or behind a crane body 2 of a railway crane, a supporting leg supporting oil cylinder 21 of the crane body 2 can be inserted into a cross beam 11 and drive the auxiliary supporting device 1 to synchronously run, so that the auxiliary supporting device 1 can share part of the load of the crane body 2, the pressure of single wheels of the crane body 2 and the auxiliary supporting device 1 on the railway track S is reduced, and the service life of the railway track S is prolonged.

Especially when the railway crane runs on the railway bridge, the auxiliary supporting device 1 can disperse the concentrated load of the crane body 2, so that the pressure of a single wheel to the railway track S and the railway bridge is reduced, the railway track S and the railway bridge are effectively protected, and the risk of new safety accidents in the rescue process is reduced.

In addition, since the auxiliary supporting device 1 exists independently of the crane body 2, that is, the structure of the existing railway crane, particularly the bogie part, is not required to be changed, the structure of the bogie is greatly simplified, the cost of the railway crane is favorably controlled, and the running and operation difficulties of the railway crane are reduced.

More importantly, the auxiliary supporting device 1 also has a passive leveling function, when external force acts on the cross beam 11, the cross beam 11 can rotate in a vertical plane relative to the longitudinal beam 12, so that the cross beam 11 can be always kept at a substantially horizontal position in the running process, and rollover and overturning phenomena in the running process can be effectively prevented.

The external force mainly comes from a supporting leg supporting cylinder 21 of the crane body 2, and in operation, the crane body 2 is a power component and acts on the cross beam 11 through the supporting leg supporting cylinder 21 so as to push the auxiliary supporting device 1 to synchronously operate; when the crane passes through a curve, the crane body 2 is provided with a leveling function, so that the supporting leg supporting oil cylinders 21 can shift in the vertical plane, and the supporting leg supporting oil cylinders 21 can drive the cross beam 11 to rotate in the vertical plane so as to level the cross beam 11.

The "vertical plane" on which the beam 11 rotates, specifically, a vertical plane perpendicular to the longitudinal direction; in addition, in the embodiment of the present invention, the number of the wheel assemblies 13 is not limited, and may be two or more, and the more the number of the wheel assemblies 13 is, the more beneficial to reduce the pressure of the single wheel 131 on the railway track S, and the less the number of the wheel assemblies 13 is, the more beneficial to reduce the complexity of the structure of the auxiliary supporting device 1, and at the same time, the more easily the wheels 131 of the auxiliary supporting device 1 are ensured to be on the same plane, so as to balance the stress of the wheels 131.

With continued reference to fig. 1, the auxiliary supporting device 1 may further include a guide beam 14, where the guide beam 14 may be disposed between the cross beam 11 and the longitudinal beam 12, and in practice, the cross beam 11 is mounted on the longitudinal beam 12 through the guide beam 14.

One of the lower end surface of the cross member 11 and the upper end surface of the guide beam 14 may be provided with a guide block 111, and the other may be provided with a guide surface 141, the guide block 111 being capable of abutting against the guide surface 141, and when the cross member 11 rotates in a vertical plane by an external force, the guide block 111 being capable of sliding on the guide surface 141 to guide the rotation of the cross member 11.

In the embodiment of the present invention, the connection structure between the beam 11 and the beam 14 is described mainly by taking the case that the guide surface 141 is disposed on the beam 14 and the guide block 111 is disposed on the beam 11 as an example, and the scheme that the guide surface 141 is disposed on the beam 11 and the guide block 111 is disposed on the beam 14 is similar to that, and will not be described herein.

The number of the guide blocks 111 and the number of the guide surfaces 141 can be one or two or more, and when the number of the guide blocks is one, the guide blocks 111 need to have a larger transverse dimension so as to ensure that the cross beam 11 can be stably placed on the guide beam 14 through the guide blocks 111; in the mounting, the guide blocks 111 may be arranged in a one-to-one correspondence with the guide surfaces 141, i.e., one guide block 111 slides on a corresponding one of the guide surfaces 141, or a plurality of guide blocks 111 may slide on one guide surface 141 at the same time.

In particular, according to the embodiment of the present invention, the number of the guide blocks 111 and the number of the guide surfaces 141 may be two, the two guide blocks 111 may be laterally disposed at intervals on the lower end surface of the beam 11, the two guide surfaces 141 may be respectively disposed at two lateral end portions of the beam 14, and the two guide surfaces 141 extend obliquely downward, and the two guide blocks 111 are in one-to-one correspondence and abut against the two guide surfaces 141, i.e., the guide block 111 located on the left side may abut against the guide surface 141 located on the left end of the beam 14, and the guide block 111 located on the right side may abut against the guide surface 141 located on the right end of the beam 14, so that the beam 11 may be stably disposed on the beam 14.

When the cross beam 11 is driven to rotate in a vertical plane by an external force, each guide block 111 can slide on the corresponding guide surface 141 to guide the rotation of the cross beam 11, for example, still taking fig. 1 as a view angle, when the cross beam 11 rotates clockwise, the guide block 111 located at the left side can slide obliquely upward along the guide surface 141 at the left end of the guide beam 14, and the guide block 111 located at the right side can slide obliquely downward along the guide surface 141 at the right end of the guide beam 14.

The two guide surfaces 141 may be respectively and independently disposed, i.e. have no connection relationship with each other, and are respectively disposed at two lateral ends of the guide beam 14, as shown in fig. 1, at this time, a plane transition area is disposed in the middle of the upper end surface of the guide beam 14 to connect the two guide surfaces 141, and other connection structures between the cross beam 11 and the guide beam 14 can be conveniently disposed due to the flat surface of the plane transition area; the inner ends of the two guide surfaces 141 may be connected, and in this case, the entire upper end surface of the guide beam 14 may be the guide surface 141, for example, the upper end surface of the guide beam 14 may be a complete arc surface.

Taking the embodiment with a plane transition area (as shown in fig. 1) as an example, the two transverse end faces of the guide beam 14 are guide faces 141, during processing, the whole two transverse end faces of the guide beam 14 can be processed into a plane or a curved surface extending obliquely downwards, i.e. the whole two transverse end faces of the guide beam 14 are guide faces 141, which is convenient for processing; a slide groove for sliding the guide block 111 may be provided at both lateral ends of the guide beam 14, and a bottom wall of the slide groove corresponds to the guide surface 141.

The guide surface 141 may be an arc surface to match with a rotation track of the beam 11 during leveling, which is more beneficial to ensure the contact between the guide block 111 and the guide surface 141. Alternatively, the guide surface 141 may have another curved surface structure, and no matter what curved surface structure is adopted, it is only required to ensure that the cross beam 11 can be leveled to a completely horizontal state.

A limiting mechanism can be further arranged between the cross beam 11 and the guide beam 14 to limit the longitudinal relative displacement between the two, and the limiting mechanism is also a transmission mechanism, so that the driving force of the crane body 2 acting on the cross beam 11 can be transmitted to the guide beam 14 and finally transmitted to the wheel assembly 13 to drive the auxiliary supporting device 1 to synchronously operate.

In fact, in the above-mentioned scheme of setting up the chute and the guide block 111 to cooperate, since the side wall of the chute can be abutted against the guide block 111 to limit the relative displacement between the cross beam 11 and the guide beam 14, the chute and the guide block 111 can constitute the above-mentioned limiting mechanism.

For the scheme without a chute, the embodiment of the invention also provides another limiting structure, wherein one of the lower end part of the cross beam 11 and the upper end part of the guide beam 14 can be provided with a limiting hole, the other one can be provided with a limiting column 112, the limiting hole and the limiting column 112 can form a limiting mechanism, and when the limiting column 112 and the limiting hole are in an inserting state, the limiting column 112 can be abutted against the two longitudinal side walls of the limiting hole so as to limit the longitudinal relative displacement of the cross beam 11 and the guide beam 14.

Specifically, as shown in fig. 2, a limiting hole (not shown) may be provided at an upper end portion of the guide beam 14, and a limiting post 112 may be provided at a lower end portion of the cross beam 11.

The limiting hole may be a bar-shaped hole extending in the transverse direction, and when the cross beam 11 rotates in the vertical plane, the limiting post 112 may also displace in the transverse direction in the limiting hole, so as to avoid interference with the rotation of the cross beam 11. In fact, the above-mentioned limit hole can also guide the lateral displacement of the limit post 112, that is, the setting of the limit hole can guide the rotation of the beam 11 in the vertical plane, that is, the cooperation structure of the above-mentioned limit post 112 and the limit hole, not only the limit mechanism between the beam 11 and the guide beam 14, but also the transmission mechanism and the guide mechanism.

Further, the positioning pin 142 may be further included, when the limiting post 112 is disposed on the cross beam 11, one end of the limiting post 112 inserted into the limiting hole and the front and rear side walls of the guide beam 14 may be provided with positioning pin holes, and the positioning pin 142 may pass through the positioning pin holes disposed on the limiting post 112 and the guide beam 14 to limit the vertical displacement of the cross beam 11 and the guide beam 14.

The positioning pins 142 may make the cross beam 11 and the guide beam 14 form a whole, so as to facilitate the carrying of the auxiliary supporting device 1 provided by the embodiment of the invention; when the auxiliary supporting device 1 works in cooperation with the crane body 2, the positioning pin 142 can be pulled out to avoid interference with the rotation of the beam 11.

Of course, when in use, the positioning pin 142 may not be pulled out, the positioning pin 142 and the limiting post 112 are in a hinged relationship, and the limiting post 112 can drive the beam 11 to rotate around the positioning pin 142, so that when in product design, the center of a circle of the beam 11 in the process of rotating and leveling is located on the axis of the positioning pin 142, and the positioning pin 142, the limiting post 112 and the beam 11 are combined to form a simple pendulum structure, so that the beam 11 can also be rotated and leveled.

Further, the guide beam 14 is also able to rotate relative to the wheel assembly 13 in the plane of the railway track S to coordinate the direction of travel of the auxiliary support device 1.

It should be appreciated that when driving on a curve, the wheel assembly 13 is forced to the railway track S, the running direction can be changed at the first time, and the vehicle body is of a rigid structure, which cannot rotate correspondingly with the railway track S, so that torsion is generated between the wheel assembly 13 and the vehicle body, and if the vehicle body is rigidly connected with the wheel assembly 13, the torsion may cause torsion of the connecting structure between the two, so that the vehicle body can rotate relative to the wheel assembly 13 in the plane of the railway track S to absorb the torsion, so that the vehicle body can smoothly pass through the curve.

In particular, referring to fig. 2 as a view angle, and referring to fig. 1, the auxiliary supporting device 1 provided by the embodiment of the present invention may further include a bottom beam 15 connecting two adjacent longitudinal beams 12, and the guide beam 14 is mounted on the bottom beam 15 through a center plate 16, so as to implement relative rotation between the guide beam 14 and the wheel assembly 13.

In production, the longitudinal beams 12 and the bottom beams 15 form a chassis of the auxiliary support device 1, which is mounted to the wheel assembly 13, and the guide beams 14 and the cross beams 11 are in turn mounted to the chassis.

As shown in fig. 3-5, and referring to fig. 1, two end portions of the cross beam 11 may be provided with supporting seats 17, and two supporting leg supporting cylinders 21 of the crane body 2 may be inserted into the two supporting seats 17, that is, the auxiliary supporting device 1 provided by the embodiment of the present invention supports the crane body 2 in a two-point supporting manner, so as to ensure balance of stress of each supporting point, and further ensure connection reliability of the crane body 2 and the auxiliary supporting device 1 and stability of power transmission therebetween in the running process.

The beam 11 and the crane body 2 can also adopt a mode of one-point support or multi-point support, correspondingly, one or more supporting seats 17 are required to be arranged on the beam 11 to be matched with the supporting leg supporting cylinders 21 of the crane body 2, no matter what mode is adopted, as long as the auxiliary supporting device 1 can be ensured to reliably support the crane body 2, and the auxiliary supporting device 1 can be passively leveled under the action of the crane body 2.

The above-mentioned supporting seats 17 may be provided with slots 171, the leg supporting cylinders 21 may be inserted into the slots 171, and the mounting height of each supporting seat 17 may be lower than the top of the cross beam 11, that is, relatively speaking, the mounting height of the supporting seat 17 is lower, so as to meet the supporting requirement of the leg supporting cylinders 21.

Thus, the beam 11 may be designed to have a structure with low ends and high middle, for example, a structure in a shape like a Chinese character 'ji' as shown in fig. 1, the middle of the beam 11 is convex to form a groove, two ends form wing plates, the aforementioned structures such as the guide beam 14 and the guide block 111 may be located in the groove, and the supporting seat 17 may be disposed on the two wing plates of the beam 11.

With continued reference to fig. 3, and in conjunction with fig. 1, each of the stringers 12 may be located inboard of the two wheels 131 of the wheel assembly 13, in such a configuration that the risk of the cross-beam 11 striking the stringers 12 is reduced as the cross-beam 11 rotates in the vertical plane. Of course, the longitudinal beam 12 may also be provided outside the wheel 131, in which case the transverse beam 11 needs to have a larger transverse dimension to avoid impact with the longitudinal beam 12 during rotation.

The terms "inner" and "outer" refer to the longitudinal axis of the wheel assembly 13, and the direction closer to the longitudinal axis is referred to as "inner" and the direction farther from the longitudinal axis is referred to as "outer".

Since the transverse ends of the cross beam 11 are required to be provided with the supporting seats 17 to support the crane body 2, the transverse dimension of the auxiliary supporting device 1 is large, and the occupied space of the auxiliary supporting device 1 is large when not in use.

Therefore, the embodiment of the invention also provides a scheme that the supporting seats 17 can be folded in a rotating way, so that each supporting seat 17 can be folded when not in use, and the occupied space of the auxiliary supporting device 1 is reduced.

Referring to fig. 6-12, fig. 6 is a schematic structural diagram of a second embodiment of an auxiliary supporting device according to the present invention, fig. 7 is a schematic structural diagram of a connection between a supporting seat and a cross beam in fig. 6, fig. 8 is a top view of fig. 6, fig. 9 is a schematic structural diagram of the auxiliary supporting device in a folded position of the supporting seat in fig. 8, fig. 10 is a schematic structural diagram of a third embodiment of the auxiliary supporting device according to the present invention, fig. 11 is a schematic structural diagram of the auxiliary supporting device in a folded position of the supporting seat in fig. 10, and fig. 12 is a top view of fig. 10.

As shown in fig. 6 to 9, in a specific embodiment, the supporting seat 17 may be located at the lower end surfaces of two end portions of the beam 11 and hinged to the beam 11 by a hinge shaft, where the hinge shaft is vertically disposed, that is, the supporting seat 17 may rotate forward or backward in a horizontal plane relative to the beam 11, so as to switch the working position of the supporting seat 17.

When the support base 17 is turned to be substantially flush with the cross beam 11, as shown in fig. 8, the support base 17 is in the use position, and can support the leg support cylinder 21 of the crane body 2; when the support seat 17 is turned substantially flush with the stringers 12, as shown in fig. 9, the support seat 17 can be in a collapsed position, the lateral dimensions of the auxiliary support device 1 can be greatly reduced, so as to reduce its space occupation.

A limit stop can be further arranged between the supporting seat 17 and the cross beam 11, and when the supporting seat 17 rotates to a use position, the limit stop can fix the relative position of the supporting seat 17 and the cross beam 11, so that the reliability of the auxiliary supporting device 1 in the use process is ensured.

In another embodiment, as shown in fig. 10-12, the supporting seats 17 may be located at two ends of the cross beam 11 and hinged to the cross beam 11 by a hinge shaft, where the hinge shaft is disposed in the front-rear direction, i.e. the supporting seats 17 may be turned upwards or towards the cross beam 11 in a vertical plane, so as to switch the working positions of the supporting seats 17.

Specifically, the middle part of the supporting seat 17 is hinged to the cross beam 11, the slot 171 is arranged at the outer end part of the supporting seat 17, when the supporting seat 17 rotates downwards to be approximately at the horizontal position, the inner end part of the supporting seat 17 can prop against the lower end of the cross beam 11 to limit the rotation range of the supporting seat 17, and at the moment, the supporting seat 17 is at the use position; when the supporting seat 17 is rotated upward to be in a substantially vertical position, the supporting seat 17 can be in a folded position, and the lateral dimension of the auxiliary supporting device 1 can be reduced.

Referring to fig. 13, fig. 13 is a schematic view of a railway crane in a use position according to the present invention.

The invention also provides a railway crane comprising a crane body 2 and the auxiliary supporting device 1 according to the above embodiments.

When the auxiliary supporting device 1 is used, the auxiliary supporting device 1 can be positioned on a railway track S in front of or behind the crane body 2, the supporting leg supporting oil cylinders 21 of the crane body 2 are inserted into the cross beams 11, and the crane body 2 can drive the auxiliary supporting device 1 to synchronously run on the railway track S and can drive the cross beams 11 to rotate in a vertical plane so as to level the cross beams 11.

Since the auxiliary supporting device 1 has the technical effects described above, the railway crane having the auxiliary supporting device 1 also has similar technical effects, and thus the description thereof will not be repeated here.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. An auxiliary supporting device for a railway crane, which is characterized by comprising a cross beam (11), longitudinal beams (12) and a plurality of wheel assemblies (13) arranged at intervals along the longitudinal direction, wherein the wheel assemblies (13) are used for running on a railway track (S), and the longitudinal beams (12) are connected with axles (132) of the wheel assemblies (13);

The cross beam (11) is arranged on the longitudinal beam (12), can be used for being inserted into a supporting leg supporting oil cylinder (21) of a crane body (2) of the railway crane and can rotate in a vertical plane relative to the longitudinal beam (12), and the auxiliary supporting device is configured to be capable of being pushed by the supporting leg supporting oil cylinder (21) to displace;

the novel transverse beam structure comprises a transverse beam (11) and a longitudinal beam (12), and is characterized by further comprising guide beams (14), wherein the guide beams (14) are arranged between the transverse beam (11) and the longitudinal beam (12), one of the lower end surface of the transverse beam (11) and the upper end surface of the guide beam (14) is provided with a guide block (111), the other guide block is provided with a guide surface (141), the guide block (111) can be abutted against the guide surface (141), and when the transverse beam (11) is driven by external force to rotate in a vertical plane, the guide block (111) can slide on the guide surface (141); a limiting mechanism is further arranged between the cross beam (11) and the guide beam (14) so as to limit the longitudinal relative displacement between the two;

One of the lower end part of the cross beam (11) and the upper end part of the guide beam (14) is provided with a limit column (112), the other is provided with a limit hole, and the limit column (112) and the limit hole form the limit mechanism; when the limit column (112) and the limit hole are in an inserting state, the longitudinal relative displacement of the cross beam (11) and the guide beam (14) can be limited;

Supporting seats (17) are arranged at two end parts of the cross beam (11), and the installation height of the supporting seats (17) is lower than the top of the cross beam (11); a slot (171) is arranged in the supporting seat (17), and a supporting leg supporting oil cylinder (21) of the crane body (2) can be inserted into the slot (171);

The guide beam (14) is rotatable relative to the wheel assembly (13) in a plane of the railway track (S).

2. Auxiliary support device according to claim 1, characterized in that the number of guide blocks (111), guide surfaces (141) is two;

the two guide surfaces (141) are respectively arranged at two transverse end parts of the guide beam (14), the two guide blocks (111) are transversely arranged at intervals on the lower end surface of the cross beam (11), and the two guide blocks (111) are in butt joint with the two guide surfaces (141) in a one-to-one correspondence.

3. The auxiliary support device according to claim 1, wherein the limit post (112) is further capable of moving laterally within the limit aperture.

4. An auxiliary support device according to claim 3, further comprising a positioning pin (142), said positioning pin (142) being capable of positioning one end of said stop post (112) inserted into said stop hole to limit the vertical relative displacement of said cross beam (11), said guide beam (14).

5. Auxiliary support device according to claim 1, further comprising a bottom girder (15) connecting two adjacent stringers (12), said guide girders (14) being mounted to said bottom girder (15) by means of a heart disk (16).

6. Auxiliary supporting device according to any one of claims 1-5, characterized in that the support seat (17) is hinged to the cross-member (11) and can rotate along a hinge axis between them, so as to switch the support seat (17) between a use position and a collapsed position.

7. Railway crane comprising a crane body (2), characterized by further comprising an auxiliary supporting device (1) according to any one of claims 1-6;

when the crane is used, the auxiliary supporting device (1) is positioned on a railway track (S) in front of or behind the crane body (2), the supporting leg supporting oil cylinder (21) of the crane body (2) is inserted into the cross beam (11), and the crane body (2) can drive the auxiliary supporting device (1) to synchronously run on the railway track (S) and can drive the cross beam (11) to rotate in a vertical plane so as to level the cross beam (11).