CN219137424U - Middle supporting leg and bridge girder erection machine - Google Patents

Abstract

The utility model provides a middle supporting leg and a bridge girder erection machine, and relates to the technical field of bridge erection equipment. Compared with the prior art, the middle supporting leg can avoid construction accidents to a certain extent.

Description

Middle supporting leg and bridge girder erection machine

Technical Field

The utility model relates to the technical field of bridge girder erection equipment, in particular to a middle supporting leg and a bridge girder erection machine.

Background

In the railway or highway construction process, the bridge girder erection machine is an indispensable machine, and the bridge girder erection machine is used for completing the work of placing prefabricated girder segments on prefabricated piers. The middle supporting leg is a main structure for supporting the bridge girder erection machine, enables the bridge girder erection machine to finish transverse girder erection, and is one of the most important bearing structure and running mechanism for the girder to longitudinally move through the hole.

When the bridge girder erection machine is used for erecting a fluctuating road section, height adjustment needs to be carried out through each supporting leg, the gravity center of the bridge girder erection machine is offset, the middle supporting leg is subjected to unbalanced force from the bridge girder erection machine, and the bridge girder erection machine can be overturned when the middle supporting leg is severe (for example, a supporting leg cylinder is exploded).

Disclosure of Invention

The utility model aims to solve the problems that: how to improve the construction safety of the bridge girder erection machine.

The utility model provides a middle supporting leg, comprising: the lower part component, well crossbeam and upper portion component, the lower part interval of well crossbeam is provided with two the lower part component, the upper portion interval of well crossbeam is provided with two the upper portion component, the lower part component is used for the butt in prefabricated mound, the upper portion component is used for being connected in the girder of bridge crane, the lower part component includes sideslip frame, indulges and moves the roof beam, sideslip hydro-cylinder and indulges and move the hydro-cylinder, sideslip frame sliding connection in indulge and move the roof beam, well crossbeam sliding connection in indulge and move the roof beam, the stiff end of sideslip hydro-cylinder articulate in sideslip frame, the flexible end of sideslip hydro-cylinder articulate in indulge and move the roof beam, indulge the stiff end of moving the hydro-cylinder connect in indulge and move the roof beam, indulge the flexible end of moving the hydro-cylinder connect in well crossbeam.

The middle supporting leg provided by the utility model has the following advantages compared with the prior art

The beneficial effects are that:

when the middle supporting leg disclosed by the utility model is used, the lower end of the lower component can be abutted against the prefabricated pier, the upper component is used for supporting the main beam of the bridge girder erection machine, the transverse moving oil cylinder is arranged in parallel relative to the middle cross beam, the longitudinal moving oil cylinder is vertically arranged relative to the middle cross beam, the longitudinal moving beam is longitudinally moved relative to the transverse moving frame through the telescopic adjustment of the transverse moving oil cylinder, and the middle cross beam is longitudinally moved relative to the longitudinal moving beam through the telescopic adjustment of the longitudinal moving oil cylinder, namely the supporting position of the middle supporting leg relative to the main beam of the bridge girder erection machine can be transversely or longitudinally changed, and further, the supporting position of the middle supporting leg assembly can be adjusted according to the gravity center position of the main beam of the bridge girder erection machine, so that the middle supporting leg and other supporting legs (front supporting leg and rear supporting leg and the like) can be matched to more uniformly support the gravity of the main beam of the bridge girder erection machine, the stress borne by different supporting legs is more balanced, and the situation of side turning over of the bridge girder erection machine can be avoided. For example, the main beam of the bridge girder erection machine is inclined, the gravity center position of the main beam is close to the rear supporting leg, the position of the middle cross beam relative to the longitudinal moving beam can be adjusted through the longitudinal moving oil cylinder, and the position of the longitudinal moving beam relative to the transverse moving frame can be adjusted through the transverse moving oil cylinder, namely, the supporting position of the middle supporting leg is enabled to move towards the direction close to the rear supporting leg through the longitudinal moving oil cylinder and the transverse moving oil cylinder, so that the main beam of the bridge girder erection machine is stressed uniformly, and the bridge girder erection machine is prevented from being turned over. Compared with the prior art, the middle supporting leg has the function of adjusting the supporting position, and construction accidents can be avoided to a certain extent.

Optionally, the landing leg in this still includes shakes the roll subassembly, shake the roll subassembly including support body, motor, flat gyro wheel and shake the gyro wheel, the support body connect in upper portion component is kept away from the tip of well crossbeam direction, flat gyro wheel with rock the gyro wheel interval connect in the support body, flat gyro wheel with rock the gyro wheel be used for the butt in bridge crane's girder, the motor connect in the support body, just the motor with flat gyro wheel with rock the gyro wheel drive connection.

Optionally, the rocking and rolling assembly further comprises a transmission shaft, a rolling gear, a rock gear and a carrier gear, wherein the transmission shaft is connected with the output end of the motor, the rolling gear is connected with the transmission shaft, the rolling wheel is connected with the rolling gear, the rock gear is connected with the rock gear, the carrier gear is connected with the frame body, and the carrier gear is in driving connection with the rolling gear and the rock gear.

Optionally, the upper component includes adjusts landing leg, upper bracket, jacking cylinder, adjust the landing leg connect in the middle cross beam, the upper bracket cover is located adjust the landing leg, the upper end of upper bracket connect in the support body, the stiff end of jacking cylinder connect in the upper bracket, the flexible end of jacking cylinder connect in the middle cross beam.

Optionally, a first pin hole is formed in the upper end of the upper support, a second pin hole with a shape matched with that of the first pin hole is formed in the bottom of the frame body, and the first pin hole is connected with the second pin hole through a pin shaft.

Optionally, a balance valve is arranged on the jacking cylinder, and the balance valve is used for locking the jacking cylinder.

Optionally, the lower part component still includes cushion and adjusting screw, adjusting screw threaded connection in the bottom of sideslip frame, the cushion connect in adjusting screw keeps away from the tip of sideslip frame direction, the cushion be used for with prefabricated mound butt.

Optionally, the lower member further comprises a connecting structure, wherein the lower end of the connecting structure is connected to the longitudinally moving beam, and the upper end of the connecting structure is used for being connected with the middle cross beam through a pin shaft.

Optionally, a hydraulic lock is arranged on the traversing oil cylinder, and the hydraulic lock is used for locking the traversing oil cylinder when the traversing oil cylinder does not act.

In addition, the utility model also provides a bridge girder erection machine which comprises the middle supporting leg.

Because the technical improvement and the obtained technical effect of the bridge girder erection machine are the same as those of the middle supporting leg, the technical effect of the bridge girder erection machine is not described in detail.

Drawings

FIG. 1 is a front view of a middle leg of an embodiment of the present utility model;

FIG. 2 is a side view of a middle leg of an embodiment of the present utility model;

FIG. 3 is a front view of a pan and roll assembly according to an embodiment of the present utility model;

FIG. 4 is a side view of a pan and roll assembly of an embodiment of the present utility model;

FIG. 5 is a schematic view of an adjusting leg according to an embodiment of the present utility model;

fig. 6 is a schematic structural view of an upper support according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a lower member; 11. a transverse moving frame; 12. a longitudinally moving beam; 13. a traversing oil cylinder; 14. a longitudinally moving oil cylinder; 15. a cushion block; 16. adjusting a screw; 17. a connection structure; 2. a middle cross beam; 3. an upper member; 31. adjusting the support leg; 32. an upper support; 33. jacking the oil cylinder; 4. a roll-off assembly; 41. a frame body; 42. a motor; 43. a flat roller; 44. a rocking roller; 45. a transmission shaft; 46. a flat rolling gear; 47. a rock gear; 48. a carrier gear; 100. and (5) a girder of the bridge girder erection machine.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Moreover, in the drawings, the Z axis represents vertical, i.e., up and down, and the positive direction of the Z axis (i.e., the arrow of the Z axis points) represents up, and the negative direction of the Z axis (i.e., the direction opposite to the positive direction of the Z axis) represents down; the X-axis in the drawing represents the lateral direction, i.e., the left-right position, and the positive direction of the X-axis (i.e., the arrow of the X-axis points) represents the right, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the left; the Y-axis in the drawing shows the longitudinal direction, i.e., the front-to-back position, and the positive direction of the Y-axis (i.e., the arrow pointing in the Y-axis) shows the front, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) shows the back.

It should also be noted that the foregoing Z-axis, X-axis, and Y-axis are meant to be illustrative only and to simplify the description of the present utility model, and are not meant to indicate or imply that the devices or elements referred to must be in a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

As shown in fig. 1 to 2, the middle leg of the embodiment of the present utility model includes: the lower part component 1, middle cross beam 2 and upper part component 3, the lower part interval of middle cross beam 2 is provided with two lower part components 1, the upper part interval of middle cross beam 2 is provided with two upper part components 3, lower part component 1 is used for the butt in prefabricated mound, upper part component 3 is used for being connected in girder 100 of bridge crane, lower part component 1 includes sideslip frame 11, indulge and move roof beam 12, sideslip cylinder 13 and indulge and move hydro-cylinder 14, sideslip frame 11 sliding connection is in indulge and move roof beam 12, middle cross beam 2 sliding connection is in indulging and move roof beam 12, sideslip cylinder 13's stiff end articulates in sideslip frame 11, sideslip cylinder 13's flexible end articulates in indulging and moves roof beam 12, indulge and move hydro-cylinder 14's stiff end and be connected in indulging and move roof beam 12, indulge the flexible end of moving hydro-cylinder 14 and be connected in middle cross beam 2.

In this embodiment, as shown in fig. 1 and fig. 2, when in use, the lower end of the lower member 1 may be abutted against the prefabricated pier, the upper member 3 is used for supporting the main beam 100 of the bridge girder erection machine, the traversing cylinder 13 is disposed parallel to the middle beam 2, the longitudinal moving cylinder 14 is disposed vertically to the middle beam 2, the traversing cylinder 13 is used for telescopically adjusting the longitudinal moving beam 12 to move transversely (X axis direction in fig. 1) relative to the traversing frame 11, the traversing cylinder 14 is used for telescopically adjusting the middle beam 2 to move longitudinally (Y axis direction in fig. 2) relative to the longitudinal moving beam 12, that is, the supporting positions of the middle leg relative to the main beam 100 of the bridge girder erection machine may be changed transversely (X axis direction in fig. 1) or longitudinally (Y axis direction in fig. 2), and further, the supporting positions of the middle supporting leg assembly may be adjusted according to the gravity center position of the main beam 100 of the bridge girder erection machine, so that the middle leg and other legs (front and rear legs and the like) cooperate to more uniformly support the gravity of the main beam 100 of the bridge girder erection machine, so that different supporting legs are stressed, and the bridge girder erection machine may be more uniformly, and the bridge girder erection machine may be supported from the side-overturning condition of the bridge girder erection machine may be avoided. For example, the main beam 100 of the bridge girder erection machine is inclined, the gravity center position of the main beam 100 is close to the rear supporting leg, at this time, the position of the middle cross beam 2 relative to the longitudinal moving beam 12 can be adjusted through the longitudinal moving oil cylinder 14, and the position of the longitudinal moving beam 12 relative to the transverse moving frame 11 can be adjusted through the transverse moving oil cylinder 13, namely, the supporting position of the middle supporting leg is moved towards the direction close to the rear supporting leg through the longitudinal moving oil cylinder 14 and the transverse moving oil cylinder 13, so that the main beam 100 of the bridge girder erection machine is stressed uniformly, and the side turning of the bridge girder erection machine is avoided. Compared with the prior art, the middle supporting leg has the function of adjusting the supporting position, and construction accidents can be avoided to a certain extent.

Optionally, the middle supporting leg further comprises a rocking and rolling assembly 4, the rocking and rolling assembly 4 comprises a frame 41, a motor 42, a flat roller 43 and a rocking roller 44, the frame 41 is connected to the end portion, far away from the middle cross beam 2, of the upper component 3, the flat roller 43 and the rocking roller 44 are connected to the frame 41 at intervals, the flat roller 43 and the rocking roller 44 are used for being abutted to a girder 100 of the bridge girder erection machine, the motor 42 is connected to the frame 41, and the motor 42 is in driving connection with the flat roller 43 and the rocking roller 44.

In this embodiment, referring to fig. 3, the frame 41 may be a symmetrical structure of two separate bodies, the lower ends (opposite to the Z axis in fig. 3) of the two frame 41 may be connected to the upper end (positive direction of the Z axis in fig. 1 or fig. 2) of the upper member 3 through a pin, the girder 100 of the bridge girder erection machine may be disposed between the two frame 41, the flat roller 43 and the rocker roller 44 are connected to the frame 41 at intervals along the Z axis in fig. 3, the rocker roller 44 is located above the flat roller 43, the girder 100 of the bridge girder erection machine is located between the flat roller 43 and the rocker roller 44, when the rocker roller assembly 4 is used for supporting the girder 100 of the bridge girder erection machine, the lower part of the girder 100 of the bridge girder erection machine is supported by the flat roller 43, at this time, the upper part of the girder 100 of the bridge girder erection machine is not contacted with the rocker roller 44, when the girder 100 of the bridge girder erection machine is required to be transferred, the flat roller 43 is driven by the motor 42, the support leg 43 can be driven by the girder 100 of the bridge girder of the bridge erection machine, when the whole transfer is required, the lower member 1 is first separated from the hollow (for example, the lower member 1 and the rocker roller 1 is removed from the lower member is removed from the flat roller assembly 4), and the girder 100 is driven by the lower part of the rocker roller assembly by the whole bridge girder assembly by the lower member, and the upper part of the bridge girder 44 is driven by the lower part by the action of the support roller, and the support roller by the support roller _。 In summary, when it is desired to transfer the main girder 100 of the bridge girder erection machineThe main beam 100 of the support frame bridge machine is in contact with the flat roller 43, and the main beam 100 of the support frame bridge machine is separated from the rocking roller 44; when the middle leg is required to be transferred, the main girder 100 of the support frame bridge machine is in contact with the rocking roller 44, and the main girder 100 of the support frame bridge machine is separated from the flat roller 43.

Optionally, the rocking and rolling assembly 4 further includes a transmission shaft 45, a flat gear 46, a rocking gear 47 and a carrier gear 48, the transmission shaft 45 is connected with an output end of the motor 42, the flat gear 46 is connected with the transmission shaft 45, the flat roller 43 is connected with the flat gear 46, the rocking gear 44 is connected with the rocking gear 47, the carrier gear 48 is connected with the frame 41, and the carrier gear 48 is in driving connection with the flat gear 46 and the rocking gear 47.

In this embodiment, as shown in fig. 4, the frame 41 may be a plate structure, the motor 42 is used to drive the flat gear 46 to rotate, and the flat gear 46 transmits power to the rock gear 47 through the carrier gear 48, that is, the motor 42 may drive the flat roller 43 and the rock roller 44 to rotate simultaneously.

Optionally, the upper member 3 includes an adjusting leg 31, an upper support 32, and a jacking cylinder 33, where the adjusting leg 31 is connected to the middle beam 2, the upper support 32 is sleeved on the adjusting leg 31, the upper end of the upper support 32 is connected to the frame 41, the fixed end of the jacking cylinder 33 is connected to the upper support 32, and the telescopic end of the jacking cylinder 33 is connected to the middle beam 2.

In this embodiment, as shown in fig. 1 to 2 and fig. 5 to 6, a flange plate is disposed at the bottom of the adjusting leg 31 (opposite direction of the Z axis in fig. 1 or fig. 2), the adjusting leg 31 may be connected to the middle beam 2 through the flange plate, the upper support 32 is sleeved on the adjusting leg 31, the upper end of the upper support 32 may be connected to the frame 41 through a pin, an oil cylinder reaction seat is disposed on the outer side wall of the upper support 32, the fixed end of the lifting oil cylinder 33 may be connected to the oil cylinder reaction seat through a bolt, the telescopic end of the lifting oil cylinder 33 may be connected to the middle beam 2 through a pin, and the upper support 32 and the adjusting leg 31 may be moved relatively through the lifting oil cylinder 33.

Optionally, a first pin hole is formed at the upper end of the upper support 32, a second pin hole with a shape matching that of the first pin hole is formed at the bottom of the frame 41, and the first pin hole and the second pin hole are connected through a pin shaft.

In this embodiment, as shown in fig. 3 and fig. 6, the upper end of the upper support 32 is provided with a first pin hole, the bottom of the frame 41 is provided with a second pin hole with a diameter matching the first pin hole, and the first pin hole and the second pin hole can be connected through a pin shaft, so as to connect the upper support 32 and the frame 41 into a whole.

Optionally, a balance valve is provided on the jacking cylinder 33, and the balance valve is used for locking the jacking cylinder 33.

In this embodiment, by providing the balance valve on the jack-up cylinder 33, the jack-up cylinder 33 can be locked at any time, and at the same time, the shaking phenomenon in the load lifting process can be effectively avoided.

Optionally, the lower member 1 further includes a spacer 15 and an adjusting screw 16, the adjusting screw 16 is screwed to the bottom of the traversing frame 11, the spacer 15 is connected to the end of the adjusting screw 16 away from the traversing frame 11, and the spacer 15 is used for abutting with the prefabricated pier.

In this embodiment, referring to fig. 1, the spacer 15 and the adjusting screw 16 are used to support the traversing rack 11, and when the lower member 1 is installed, the height of the lower member 1 is determined, and then the height can be adjusted by the adjusting screw 16.

Optionally, the lower member 1 further comprises a connecting structure 17, wherein the lower end of the connecting structure 17 is connected to the longitudinally moving beam 12, and the upper end of the connecting structure 17 is used for being connected with the middle cross beam 2 through a pin shaft.

In this embodiment, as shown in fig. 1, the connecting structure 17 functions as an intermediate connecting member between the longitudinally moving beam 12 and the middle cross beam 2, and a pin hole is formed in the middle of the connecting structure 17 and can be connected to the middle cross beam 2 through a pin shaft.

Optionally, a hydraulic lock is arranged on the traversing cylinder 13, and the hydraulic lock is used for locking the traversing cylinder 13 when the traversing cylinder 13 does not act.

In this embodiment, by providing the hydraulic lock on the traversing cylinder 13, the loop of the traversing cylinder 13 can be locked, and the loop oil is prevented from flowing, so as to ensure that the traversing cylinder 13 can still keep its position even if there is a certain load from the outside.

In addition, the utility model also provides a bridge girder erection machine which comprises the middle supporting leg.

Because the technical improvement and the obtained technical effect of the bridge girder erection machine are the same as those of the middle supporting leg, the technical effect of the bridge girder erection machine is not described in detail.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims (10)

1. A middle leg, comprising: lower part component (1), well crossbeam (2) and upper portion component (3), the lower part interval of well crossbeam (2) is provided with two lower part component (1), the upper portion interval of well crossbeam (2) is provided with two upper portion component (3), lower part component (1) are used for the butt in prefabricated mound, upper portion component (3) are used for connecting in girder (100) of bridge crane, lower part component (1) include sideslip frame (11), indulge and move roof beam (12), sideslip cylinder (13) and indulge and move hydro-cylinder (14), sideslip frame (11) sliding connection in indulge and move roof beam (12), well crossbeam (2) sliding connection in indulge and move roof beam (12), the stiff end of hydro-cylinder (13) articulate in sideslip frame (11), the flexible end of sideslip hydro-cylinder (13) articulate in indulge and move roof beam (12), the stiff end of indulge and move hydro-cylinder (14) connect in indulge and move roof beam (12), indulge and move hydro-cylinder (14) sideslip end connect in the flexible crossbeam (2).

2. The middle supporting leg according to claim 1, further comprising a rolling assembly (4), wherein the rolling assembly (4) comprises a frame body (41), a motor (42), a flat roller (43) and a rolling wheel (44), the frame body (41) is connected to the end portion, far away from the middle cross beam (2), of the upper component (3), the Ping Gunlun (43) and the rolling wheel (44) are connected to the frame body (41) at intervals, the Ping Gunlun (43) and the rolling wheel (44) are used for being abutted to a main beam (100) of the bridge girder erection machine, the motor (42) is connected to the frame body (41), and the motor (42) is in driving connection with the Ping Gunlun (43) and the rolling wheel (44).

3. The middle support leg according to claim 2, characterized in that the roll assembly (4) further comprises a drive shaft (45), a flat gear (46), a roll gear (47) and a carrier gear (48), the drive shaft (45) is connected with the output end of the motor (42), the flat gear (46) is connected to the drive shaft (45), the Ping Gunlun (43) is connected to the flat gear (46), the roll gear (44) is connected to the roll gear (47), the carrier gear (48) is connected to the frame (41), and the carrier gear (48) is in driving connection with the flat gear (46) and the roll gear (47).

4. The middle supporting leg according to claim 2, wherein the upper member (3) comprises an adjusting supporting leg (31), an upper support (32) and a jacking cylinder (33), the adjusting supporting leg (31) is connected to the middle cross beam (2), the upper support (32) is sleeved on the adjusting supporting leg (31), the upper end of the upper support (32) is connected to the frame body (41), the fixed end of the jacking cylinder (33) is connected to the upper support (32), and the telescopic end of the jacking cylinder (33) is connected to the middle cross beam (2).

5. The middle supporting leg according to claim 4, wherein a first pin hole is formed in the upper end of the upper support (32), a second pin hole matched with the first pin hole in shape is formed in the bottom of the frame body (41), and the first pin hole and the second pin hole are connected through a pin shaft.

6. The middle leg according to claim 4, characterized in that a balancing valve is provided on the jack-up cylinder (33), which balancing valve is used for locking the jack-up cylinder (33).

7. The middle supporting leg according to claim 1, characterized in that the lower member (1) further comprises a cushion block (15) and an adjusting screw (16), the adjusting screw (16) is in threaded connection with the bottom of the traversing carriage (11), the cushion block (15) is connected with the end of the adjusting screw (16) away from the traversing carriage (11), and the cushion block (15) is used for abutting with a prefabricated pier.

8. The middle leg according to claim 1, characterized in that the lower member (1) further comprises a connecting structure (17), the lower end of the connecting structure (17) being connected to the longitudinally moving beam (12), the upper end of the connecting structure (17) being adapted to be connected to the middle cross beam (2) by means of a pin.

9. The middle support leg according to any one of claims 1-8, characterized in that a hydraulic lock is arranged on the traversing cylinder (13), which hydraulic lock is used for locking the traversing cylinder (13) when the traversing cylinder (13) is not in action.

10. A bridge girder erection machine comprising the middle leg according to any one of claims 1 to 9.

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