CN111439671A

CN111439671A - Hoisting and transporting equipment

Info

Publication number: CN111439671A
Application number: CN202010376335.9A
Authority: CN
Inventors: 李杰杰; 张程; 袁春兰
Original assignee: Eurocrane Co ltd
Current assignee: Eurocrane Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-07-24

Abstract

The invention relates to the technical field of rail engineering, and particularly discloses lifting transportation equipment. The segment crane comprises a first trolley and a second trolley, and the first trolley and the second trolley are both provided with driving mechanisms. The track system comprises a first straight track area, a transition track area and a second straight track area which are sequentially connected. And linear transmission mechanisms are respectively paved along the first straight track area and the second straight track area, and the driving mechanism is in transmission connection with the linear transmission mechanisms so as to drive the trolley to move along the track system. When the segment crane passes through the transition track area, at least one group of driving mechanisms can be in transmission connection with the linear transmission mechanism, so that driving force is provided for the segment crane, and the segment crane passes through the transition track area. The hoisting and transporting equipment provided by the invention enables the segment crane to pass through the track with a larger bending angle, and simultaneously enhances the smoothness during bending.

Description

Hoisting and transporting equipment

Technical Field

The invention relates to the technical field of rail engineering, in particular to lifting and transporting equipment.

Background

Segment cranes are commonly used in the construction and transportation of rails. In the prior art, the segment crane mainly comprises a running trolley, a driven trolley and a lifting hoist, wherein the lifting hoist is connected to the driven trolley, and the running trolley drives the driven trolley to move. Generally, a chain wheel is installed on the running trolley, a chain is arranged on the track, and the running trolley finishes moving on the track by driving the chain wheel to rotate on the chain. However, for the track with a large turning angle, the chain wheel is often separated from the slotted hole on the chain, so that the running stability of the running trolley is poor, even the running trolley is derailed, and the life safety of workers is threatened.

Disclosure of Invention

The invention aims to provide lifting and transporting equipment to solve the problems of poor stability and easiness in derailment when a segment crane turns.

In order to achieve the purpose, the invention adopts the following technical scheme:

a lift transport apparatus comprising:

the segment crane comprises a first trolley and a second trolley, wherein the first trolley is connected with the second trolley, and the first trolley and the second trolley are both provided with driving mechanisms;

the track system comprises a first straight track area and a second straight track area which are arranged at an included angle, and a transition track area is arranged between the first straight track area and the second straight track area; linear transmission mechanisms are respectively paved along the length direction of the first straight track area and the second straight track area, and both groups of driving mechanisms can be in transmission connection with the linear transmission mechanisms so as to drive the first trolley and the second trolley to move along the track system;

the distance between the drive mechanism of the first trolley and the drive mechanism of the second trolley is greater than or equal to the length of the transition track area.

Preferably, the transition track area is arc-shaped, the extending direction of the first straight track area is tangent to one end of the transition track area, and the extending direction of the second straight track area is tangent to the other end of the transition track area.

Preferably, the transition track area comprises a first straight transition track area and a second straight transition track area which are connected in a zigzag manner, and the first straight transition track area and the first straight track area are connected into a straight line; the second straight transition track area and the second straight track area are connected into a straight line.

Preferably, the driving mechanism includes a first driving motor and a sprocket, the linear transmission mechanism is a chain, and the first driving motor drives the sprocket to rotate on the chain.

Preferably, the driving mechanism includes a second driving motor and a gear, the linear transmission mechanism is a rack, and the second driving motor drives the gear to rotate on the rack.

Preferably, the first straight track area, the transition track area and the second straight track area each include two tracks, and the chain is disposed between the two tracks in the first straight track area and the second straight track area.

Preferably, the hoisting and transporting equipment further comprises a detection assembly, and the detection assembly is used for detecting whether the first trolley or the second trolley is located at a first preset position and a second preset position.

Preferably, the detection assembly is a shift lever and a cross limit switch, the shift lever is provided with two shift levers and arranged on the rail system at intervals, the cross limit switch is provided with two cross limit switches and arranged on the first trolley and the second trolley respectively, the cross limit switch is electrically connected with the first driving motor, the first trolley moves to the first preset position and the second preset position, and the cross limit switch on the first trolley can touch the shift lever; the second trolley moves to the first preset position and the second preset position, the cross limit switch on the second trolley can touch the shifting lever, and the shifting lever can shift the cross limit switch to change the opening and closing state of the first driving motor.

Preferably, the first trolley and the second trolley are both provided with guide rollers, and the guide rollers are arranged on the track system in a rolling manner.

Preferably, a connecting trolley is connected between the first trolley and the second trolley, and the connecting trolley is connected with a lifting hoist.

The invention has the beneficial effects that: the transition track district is last not to set up sharp drive mechanism, when the section of jurisdiction loop wheel machine is through the transition track district, actuating mechanism is not connected with the transmission of sharp drive mechanism, actuating mechanism's the condition that breaks away from sharp drive mechanism can not take place, guarantee simultaneously to have at least a set of actuating mechanism can be connected with the transmission of sharp drive mechanism, for the section of jurisdiction loop wheel machine provides drive power, make the section of jurisdiction loop wheel machine pass through the transition track district, and then make the section of jurisdiction loop wheel machine pass through the great track of bending angle, the ride comfort when crossing the curve has been strengthened simultaneously.

Drawings

FIG. 1 is a schematic structural diagram of a track system provided by an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a driving mechanism provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a pipe piece crane provided in an embodiment of the present invention.

In the figure:

100-track;

1-a first trolley; 11-a first drive motor; 12-a sprocket;

2-connecting a trolley;

3-a second trolley; 31-guide rollers;

4-lifting the hoist;

51-a first straight track area; 511-a chain; 52-transition track area; 53-second straight track area;

61-cross limit switch; 62-deflector rod.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the present invention, orientation words such as "upper", "lower", "left" and "right" are defined, and in the case where no description is given to the contrary, the orientation words such as "upper", "lower", "left" and "right" are defined in the normal use of the pipe crane provided in the present invention, and correspond to the up, down, left and right directions shown in the drawings, and "inner" and "outer" refer to the inside and outside with respect to the contour of each part itself. These directional terms are used for ease of understanding and are not intended to limit the scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a pipe piece crane which is used for rail running, but not limited to rail running, so that smoothness during overbending is improved.

As shown in fig. 1, the hoisting and transporting equipment provided by the embodiment includes a segment crane and a rail system, the segment crane includes a first trolley 1 and a second trolley 3, the first trolley 1 is connected with the second trolley 3, and the first trolley 1 and the second trolley 3 are both provided with driving mechanisms. The track system comprises a first straight track area 51 and a second straight track area 53, between which first straight track area 51 and second straight track area 53 a transition track area 52 is arranged. Linear transmission mechanisms are respectively paved along the length direction of the first linear track area 51 and the second linear track area 53, and at least one group of driving mechanisms can be in transmission connection with the linear transmission mechanisms so as to drive the trolley to move along the track system. The distance between the driving mechanism of the first trolley 1 and the driving mechanism of the second trolley 3 is greater than or equal to the length of the transition track area 52, so that the driving mechanism on at least one trolley can be connected to a linear transmission mechanism for transmission, and the forward movement of the power-driven segment crane is ensured.

When the first trolley 1 and the second trolley 3 are both on the first straight track area 51 or the second straight track area 53, the driving mechanisms of the first trolley 1 and the second trolley 3 are in transmission connection with the straight transmission mechanism, and at the moment, the two trolleys both generate driving force to drive the two trolleys to move. The transition track district 52 is last not to set up sharp drive mechanism, and naturally when the section of jurisdiction loop wheel machine was through transition track district 52, the condition that actuating mechanism breaks away from sharp drive mechanism can not take place, guarantees simultaneously that a set of actuating mechanism can be connected with the transmission of sharp drive mechanism, for the section of jurisdiction loop wheel machine provides drive power, makes the section of jurisdiction loop wheel machine pass through transition track district. And then make the great track of segment crane through bend angle, strengthened the ride comfort when bending over simultaneously.

Preferably, as shown in fig. 1-2, the driving mechanism includes a first driving motor 11 and a chain wheel 12, the linear transmission mechanism is a chain 511, and the first driving motor 11 drives the chain wheel 12 to rotate on the chain 511. The first trolley 1 and the second trolley 3 are both provided with guide rollers 31, and the guide rollers 31 are arranged on the tracks in a rolling manner. The sprocket 12 rotates on the chain 511 to drive the guide roller 31 to roll along the rail, so that the cart can move forward and backward. Under the condition that the first driving motor 11 is turned off, the chain wheel 12 can also rotate freely, the impact generated when the chain wheel 12 capable of rotating freely is meshed with the chain 511 is small, and after the chain wheel 12 is meshed with the chain 511, the first driving motor 11 is started, so that the design can effectively reduce the impact when the chain wheel 12 is meshed with the chain 511, and is favorable for improving the stability of turning.

In the present embodiment, the transition track area 52 includes a first straight transition track area and a second straight transition track area connected in a zigzag shape. The first rectilinear transition track area is connected to the first rectilinear track area 51 in a straight line, and the second rectilinear transition track area is connected to the second rectilinear track area 53 in a straight line. The carriage travels in a straight line to ensure that the sprocket 12 and chain 511 are aligned and thus ensure that the sprocket 12 engages the chain 511.

In other embodiments, the transition track area 52 may also be arc-shaped, and the first straight track area 51 extends tangentially to one end of the transition track area 52, and the second straight track area 53 extends tangentially to the other end of the transition track area 52, so as to ensure that the chain wheel 12 of the trolley is aligned with the chain 511 of the track system when the trolley drives into the transition track area 52, thereby ensuring that the chain wheel 12 is meshed with the chain 511. Of course, the transition track area 52 can have other shapes as long as it is ensured that the sprocket 12 and the chain 511 are facing each other when the sprocket 12 is engaged with the chain 511.

Preferably, two tracks 100 are provided on the track system, i.e. the first straight track area 51, the transition track area 52 and the second straight track area 53 each comprise two tracks 100. The chain 511 is disposed between the two rails 100 of the first and second

straight rail areas

51 and 53. Fixing the chain 511 between the two rails 100 also reduces the play of the chain 511, thereby making the cart more stable during operation.

Preferably, the hoisting and transporting equipment further comprises a detection assembly, and the detection assembly is used for detecting whether the first trolley 1 or the second trolley 3 is located at a first preset position and a second preset position.

Specifically, as shown in fig. 1 and 2, in the present embodiment, the detecting elements are a shift lever 62 and a cross limit switch 61, the shift lever 62 is provided with two shift levers and is disposed on the track system at an interval, the cross limit switch 61 is provided with two shift levers and is disposed on the first trolley 1 and the second trolley 3 respectively, the cross limit switch 61 is electrically connected to the first driving motor 11, and preferably, the cross limit switch 61 is located on one side of the first driving motor 11. The cross limit switch 61 can control the first driving motor 11 to be turned on or turned off, and the shift lever 62 can shift the cross limit switch 61 to change the on-off state of the first driving motor 11, that is, the cross limit switch 61 is shifted by the shift lever 62 once, and the first driving motor 11 is turned from the on state to the off state, or turned from the off state to the on state. When the first trolley 1 moves to the first preset position or the second preset position, the cross limit switch 61 on the first trolley 1 can touch the shift lever 62, so that the first driving motor 11 of the first trolley 1 is turned on or turned off at the first preset position or the second preset position. The second trolley 3 moves to the first preset position or the second preset position, and the cross limit switch 61 on the second trolley 3 can touch the shift lever 62, so that the first driving motor 11 of the second trolley 3 is turned on or turned off at the first preset position or the second preset position. The first drive motor 11 is switched off between the first preset position and the second preset position, which on the one hand saves energy and on the other hand reduces the impact when the sprocket 12 is re-engaged with the chain 511.

In the present embodiment, the segment crane will be described by taking an example in which the segment crane travels from the first straight track area 51 to the second straight track area 53, the second carriage 3 is in front, and the first carriage 1 is in the rear. Of course, in other embodiments, the segment crane may travel from the second straight track area 53 to the first straight track area 51, with the first cart 1 in front and the second cart 3 in back.

In the present embodiment, two shift levers 62 are respectively disposed on the first rectilinear track area 51 at an end close to the transition track area 52 and the second rectilinear track area 53 at an end close to the transition track area 52.

Alternatively, for convenience of explanation, the position where the sprocket 12 of the first carriage 1 or the second carriage 3 is located is set as the position where the carriage is located with reference to the sprocket 12 of a single carriage. The position of the shift lever 62 on the first straight track area 51 is a first interval starting point, and a preset length forward from the first interval starting point along the track 100 is a first interval end point, which is a connection point of the first straight track area 51 and the transition track area 52, and the first preset position may be any position between the first interval starting point and the first interval end point. The joint of the transition track area 52 and the second straight track area 53 is a second interval starting point, the distance between the shift lever 62 on the second straight track area 53 and the joint of the transition track area 52 and the second straight track area 53 is a preset length, the position of the shift lever 62 on the second straight track area 53 is a second interval end point, and the second preset position can be any position between the second interval starting point and the second interval end point.

In this embodiment, the distance traveled by the cart when the sprocket 12 of the cart rotates on the chain 511 through three teeth of the three sprockets 12 is a predetermined length. When the chain wheel 12 is re-engaged with the chain 511, the chain wheel 12 of the trolley rotates on the chain 511 by 3 teeth of the chain wheel 12, the first driving motor 11 is started, and at the moment, after the first driving motor 11 is started again, the impact between the chain wheel 12 and the chain 511 is small, and the smoothness is high. Before the chain wheel 12 is separated from the chain 511, the first driving motor 11 is turned off to prevent the trolley chain wheel 12 from slipping when being separated from the chain 511.

In this embodiment, the chain wheel 12 and the cross limit switch 61 on a single trolley are located in the same vertical direction, and when the trolley is located at the starting point of the first interval and the ending point of the second interval, the first driving motor 11 changes the on-off state.

Of course, the first preset position and the second preset position established by using the trolley chain wheel 12 as a reference point in the present embodiment may also be referred to positions of other components of the trolley in other embodiments, or may also be referred to a track system, and the distance between the starting point and the ending point of the preset position may also be other values, which is not specifically limited herein.

The reasonable arrangement of the installation positions of the two cross limit switches 61 and the shift lever 62 and the length of the transition track 52 can ensure that the chain wheel 12 on at least one trolley can be connected with the chain 511, can also enhance the smoothness of the over-bending,

as long as the first trolley 1 or the second trolley 3 enters the transition track 52, enters the transition track 52 or leaves the first straight track area 51 within a certain distance, the first driving motor 11 is turned off; the first driving motor 11 is started within a distance after the first trolley 1 or the second trolley 3 leaves the transition track area 2 and enters the second straight track area 53 or enters the second straight track area 53.

Specifically, when the trolley of the embodiment is at the starting point of the first interval, the first driving motor 11 is turned off; when the trolley is at the end of the second interval, the first driving motor 11 is started. In this embodiment, the distance between the drive mechanism of the first carriage 1 and the drive mechanism of the second carriage 3 is greater than the length of the transition track region 52. The driving process of the segment crane is further described as follows:

as shown in the schematic view of figure 1,

1) the first trolley 1 and the second trolley 3 are both arranged on the first straight track area 51, the driving mechanisms of the first trolley 1 and the second trolley 3 are both in transmission connection with the straight transmission mechanism, and at the moment, the two trolleys both generate driving force to drive the two trolleys to move.

2) When the second trolley 3 runs to the starting point of the first interval, the cross limit switch 61 on the second trolley 3 is shifted by the shift lever 62 on the first straight track area 51, the first driving motor 11 on the second trolley 3 is turned off, at this time, the first trolley 1 pushes the second trolley 3 to advance, and when the second trolley 3 runs to the ending point of the first interval, the chain wheel 12 on the second trolley 3 is separated from the chain 511 on the first straight track area 51.

3) When the second trolley 3 runs to the starting point of the second interval, the chain wheel 12 on the second trolley 3 is meshed with the chain 511 on the second straight track area 53 to continue running, and when the second trolley 3 runs to the ending point of the second interval, the cross limit switch 61 on the second trolley 3 is shifted by the shift lever 62 on the second straight track area 53, the first driving motor 11 on the second trolley 3 is started, and the second trolley 3 generates driving force. Since the distance between the drive of the first carriage 1 and the drive of the second carriage 3 is greater than the length of the transition track region 52, the first carriage 1 has not yet reached the start of the first region when the third carriage 3 again generates drive.

4) When the trolley moves forwards until the first trolley 1 reaches the starting point of the first interval, the cross limit switch 61 on the first trolley 1 is shifted by the shift lever 62 on the first straight track area 51, the first driving motor 11 on the first trolley 1 is turned off, and at the moment, the second trolley 3 drives the first trolley 1 to move forwards continuously. The first trolley 1 reaches the first zone end and the chain wheel 12 on the first trolley 1 disengages from the chain 511 on the first straight track area 51.

5) The first trolley 1 reaches the second zone start and the sprocket 12 on the first trolley 1 meshes with the chain 511 on the second straight track zone 53. The first trolley 1 reaches the end point of the second interval, the cross limit switch 61 on the first trolley 1 is shifted by the shift lever 62 on the second straight track area 53, the first driving motor 11 on the first trolley 1 is started, at the moment, the first trolley 1 and the second trolley 3 are both on the second straight track area 53, the driving mechanisms of the first trolley 1 and the second trolley 3 are both in transmission connection with the straight transmission mechanism, and at the moment, the two trolleys all generate driving force to drive the two trolleys to move.

The installation positions of the cross limit switch 61 and the shift lever 62 and the length of the transition rail 52 can be designed according to actual field conditions, and are not particularly limited herein. The cross limit switch 61 and the shift lever 62 are conventional technologies, and the structure thereof is not described herein.

In this embodiment, as shown in fig. 3, a connection trolley 2 is connected between the first trolley 1 and the second trolley 3, and the connection trolley 2 is connected with a lifting hoist 4.

In other embodiments, the driving mechanism may include a second driving motor and a gear, the linear transmission mechanism is a rack, and the second driving motor drives the gear to rotate on the rack.

In other embodiments, the detecting element may be a position sensor, for example, infrared recognition positioning may also be used. Of course, other detection assemblies can be used as long as whether the trolley is located at the first preset position or the second preset position can be identified. Compared with other types of detection assemblies, the shifting rod 62 and the cross limit switch 61 are lower in cost and higher in benefit. Of course, the detecting component may also be connected to the control unit, and the control unit controls the on/off of the first driving motor 11, which is not limited herein.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lifting transport apparatus, comprising:

the segment crane comprises a first trolley (1) and a second trolley (3), wherein the first trolley (1) is connected with the second trolley (3), and the first trolley (1) and the second trolley (3) are both provided with driving mechanisms;

the track system comprises a first straight track area (51) and a second straight track area (53) which are arranged at an included angle, and a transition track area (52) is arranged between the first straight track area (51) and the second straight track area (53); linear transmission mechanisms are respectively paved along the length directions of the first linear track area (51) and the second linear track area (53), and both groups of driving mechanisms can be in transmission connection with the linear transmission mechanisms so as to drive the first trolley (1) and the second trolley (3) to move along the track system;

the distance between the drive mechanism of the first trolley (1) and the drive mechanism of the second trolley (3) is greater than or equal to the length of the transition track section (52).

2. A hoisting transportation device as claimed in claim 1, characterized in that the transition track area (52) is arc-shaped, the first straight track area (51) extending tangentially to one end of the transition track area (52) and the second straight track area (53) extending tangentially to the other end of the transition track area (52).

3. A hoisting transportation device as claimed in claim 1, wherein the transition track area (52) comprises a first straight transition track area and a second straight transition track area connected in a zigzag shape, the first straight transition track area being connected in a straight line with the first straight track area (51); the second straight transition track area and the second straight track area (53) are connected into a straight line.

4. A hoisting transportation apparatus as claimed in claim 1, wherein the drive mechanism comprises a first drive motor (11) and a sprocket (12), the linear transmission mechanism is a chain (511), and the first drive motor (11) drives the sprocket (12) to rotate on the chain (511).

5. The hoisting transportation apparatus of claim 1, wherein the driving mechanism comprises a second driving motor and a gear, the linear transmission mechanism is a rack, and the second driving motor drives the gear to rotate on the rack.

6. A hoisting transport apparatus as claimed in claim 4, characterized in that the first straight track area (51), the transition track area (52) and the second straight track area (53) each comprise two tracks (100), the chain (511) being arranged between the two tracks (100) of the first straight track area (51) and the second straight track area (53).

7. The hoisting transportation device of claim 4, further comprising a detection assembly for detecting whether the first trolley (1) or the second trolley (3) is located at a first preset position and a second preset position.

8. The hoisting transportation equipment according to claim 7, wherein the detection assembly is a shift lever (62) and a cross limit switch (61), two shift levers (62) are arranged and arranged on the rail system at intervals, two cross limit switches (61) are arranged and arranged on the first trolley (1) and the second trolley (3) respectively, the cross limit switch (61) is electrically connected with the first driving motor (11), the first trolley (1) moves to the first preset position and the second preset position, and the cross limit switch (61) on the first trolley (1) can touch the shift lever (62); the second trolley (3) moves to the first preset position and the second preset position, the cross limit switch (61) on the second trolley (3) can touch the shifting lever (62), and the shifting lever (62) can shift the cross limit switch (61) to change the opening and closing state of the first driving motor (11).

9. Hoisting transportation device according to claim 1, wherein the first trolley (1) and the second trolley (3) are each provided with a guide roller (31), the guide rollers (31) being arranged rolling on the rail system.

10. A hoisting transportation device according to claim 1, characterized in that a connection trolley (2) is connected between the first trolley (1) and the second trolley (3), and a hoisting hoist (4) is connected to the connection trolley (2).