阅读说明：本技术 一种具有升降功能的龙门吊支架 (Gantry crane support with lifting function ) 是由 王治斌 王清明 杨岳勤 周光忠 梁志新 蒋中明 于 2019-11-26 设计创作，主要内容包括：本发明涉及桥梁的换梁施工设备,特别涉及一种具有升降功能的龙门吊支架。包括基座部以及设置在基座部上方并用于架设龙门吊的支撑部,基座部上设有用于供支撑部升降的连接部,支撑部通过限位部固定其升降高度,基座部的下端设有行走部。本发明中,龙门吊支架的支撑部具有升降功能,在对龙门吊的支撑过程中,支撑部位于低位,从而有效避免出现超过铁路高度限界的问题,当需要将龙门吊下放至导梁上时,支撑部位于高位,从而便于龙门吊的下放。(The invention relates to a beam replacing construction device of a bridge, in particular to a gantry crane support with a lifting function. The gantry crane comprises a base part and a supporting part arranged above the base part and used for erecting a gantry crane, wherein the base part is provided with a connecting part for lifting the supporting part, the lifting height of the supporting part is fixed by a limiting part, and the lower end of the base part is provided with a walking part. According to the invention, the supporting part of the gantry crane bracket has a lifting function, and is positioned at a low position in the supporting process of the gantry crane, so that the problem of exceeding a railway height limit is effectively avoided, and when the gantry crane needs to be lowered onto the guide beam, the supporting part is positioned at a high position, so that the gantry crane is conveniently lowered.)

1. A gantry crane support with a lifting function comprises a base part (100) and a supporting part (200) which is arranged above the base part (100) and used for erecting a gantry crane, and is characterized in that a connecting part (300) used for lifting the supporting part (200) is arranged on the base part (100), the lifting height of the supporting part (200) is fixed through a limiting part (400), and a walking part (500) is arranged at the lower end of the base part (100).

2. The gantry crane support with the lifting function as claimed in claim 1, wherein the supporting portion (200) is provided with a longitudinal through hole and movably sleeved on the connecting portion (300) through the through hole.

3. The gantry crane support with the lifting function according to claim 2, wherein the limiting part (400) is arranged at the top end of the supporting part (200), the limiting part (400) is provided with a first limiting end (401) movably connected with the supporting part (200) and a second limiting end (402) detachably connected with the supporting part (200), and the limiting part (400) is used for avoiding or limiting the connecting part (300) through the matching of the first limiting end (401) and the second limiting end (402).

4. The gantry crane support with the lifting function according to claim 3, wherein the limiting part (400) comprises a pair of limiting blocks (403) arranged on two radial sides of the through hole, one end of each limiting block (403) far away from the through hole is hinged to the supporting part (200), one end of each limiting block (403) close to the through hole is in pin connection with the supporting part (200), a first connecting block (203) is arranged at the top end of the supporting part (200) corresponding to the pin connection end of the limiting block (403), transverse pin holes are formed in the limiting blocks (403) and the first connecting blocks (203), and a telescopic pin shaft is arranged in the transverse pin hole of each limiting block (403).

5. The gantry crane support with the lifting function as claimed in claim 4, wherein the end of the limiting block (403) close to the through hole is provided with a thickening layer (404).

6. The gantry crane support with the lifting function according to claim 5, wherein the thickening layer (404) is disposed on a side of the limiting block (403) far away from the connecting part (300).

7. The gantry crane support with the lifting function according to claim 4, wherein the support portion (200) comprises a support block (201), the through hole, the limit block (403) and the first connection block (203) are all disposed on the support block (201), the support portion (200) further comprises a support arm (202) hinged to two sides of the support block (201) and capable of being turned upwards, a second connection block (204) is disposed on the support arm (202), and the retractable pin is in pin connection with a pin hole of the second connection block (204) in a state that the support arm (202) is turned upwards.

8. The gantry crane support with lifting function according to any one of claims 2-7, wherein the connecting part (300) is a cylindrical structure and is matched with the shape of the through hole.

9. The gantry crane support with the lifting function according to claim 8, wherein the top end of the connecting part (300) is provided with a flat cylindrical spacer (301), and the diameter of the spacer (301) is smaller than that of the connecting part (300).

10. Gantry crane carriage with lifting function according to claim 9, characterized in that the walking part (500) comprises walking wheels (501) for running on the track, and anti-tip wheels (502) arranged outside the track for preventing the base part (100) from tipping over.

Technical Field

The invention relates to a beam replacing construction device of a bridge, in particular to a gantry crane support with a lifting function.

Background

Due to the fact that the design age is long and the opening operation time is long, a large number of service beam bridges with diseases exist in the existing railway bridge. The bridge frame changing operation can be implemented on the existing line by adjusting a train operation diagram or a train operation gap and utilizing the schemes of gantry crane or bracket transverse movement and the like, and the operation mode has the advantages of no need of constructing an existing line, low cost, no environmental pollution, short construction period and the like.

When the gantry crane is in construction operation, a guide beam is arranged at a position, to be changed, of the railway, and the gantry crane can be supported through the guide beam, so that the gantry crane can conveniently detach an old beam and install a new beam.

The gantry crane supports the gantry crane through the gantry crane support and conveys the gantry crane to the guide beam, the bottom end of the gantry crane can reach the top end of the guide beam when the gantry crane supports the gantry crane, so that the gantry crane can be conveniently placed on the guide beam, the gantry crane has a certain height, and the problem that the height of the gantry crane exceeds a railway height limit can possibly occur when the gantry crane is transported.

Therefore, a gantry crane support with a lifting function is provided.

Disclosure of Invention

The invention aims to provide a gantry crane support with a lifting function, and aims to solve the technical problem that a gantry crane possibly exceeds a railway height limit in the transportation process.

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

a gantry crane support with a lifting function comprises a base part and a supporting part arranged above the base part and used for erecting a gantry crane, wherein the base part is provided with a connecting part for lifting the supporting part, the lifting height of the supporting part is fixed through a limiting part, and the lower end of the base part is provided with a walking part.

The supporting part is provided with a longitudinal through hole and is movably sleeved on the connecting part through the through hole.

Preferably, spacing portion sets up on the top of supporting part, and spacing portion has the first spacing end of being connected with supporting part swing joint and can dismantle the spacing end of second of being connected with the supporting part, and spacing portion realizes dodging or spacing to connecting portion through the cooperation of the spacing end of first spacing end and second.

Preferably, spacing portion includes a pair of stopper that sets up in two radial sides of through-hole, and the one end that the through-hole was kept away from to the stopper is articulated with the supporting part, and the one end and the supporting part pin joint that the stopper is close to the through-hole are equipped with first connecting block, and the stopper has all been seted up with first connecting block horizontal pinhole, is equipped with scalable round pin axle in the horizontal pinhole of stopper.

Preferably, one end of the limiting block, which is close to the through hole, is provided with a thickening layer.

Preferably, the thickening layer is arranged on one side of the limiting block, which is far away from the connecting part.

Preferably, the supporting part includes the supporting shoe, and through-hole, stopper and first connecting block all set up on the supporting shoe, and the supporting part still includes the support arm that articulates in the supporting shoe both sides and can upwards overturn, is provided with the second connecting block on the support arm, and under the state that the support arm upwards overturns, the pinhole pin junction of scalable round pin axle and second connecting block.

Preferably, the connecting part is of a cylindrical structure and is matched with the shape of the through hole.

Preferably, the top end of the connecting part is provided with a flat cylindrical cushion block, and the diameter of the cushion block is smaller than that of the connecting part.

Preferably, the walking part comprises walking wheels for running on the track, and anti-rollover wheels arranged outside the track for preventing the base part from rolling over.

Has the advantages that: in this application, the supporting part of portal crane support has raising and lowering functions, and at the support in-process to the portal crane, the supporting part is located the low level to effectively avoid appearing exceeding the problem of railway height gauge, when needs transfer the portal crane to the nose girder on, the supporting part is located the high level, thereby the transfer of the portal crane of being convenient for.

Drawings

Fig. 1 is a schematic structural view of a guide beam according to the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural view of the support arm of the present invention in an upturned state.

Fig. 4 is a schematic structural diagram of a gantry crane in the invention.

Fig. 5 is a schematic view showing a state where a gantry crane is transported in a railway direction in the present invention.

Fig. 6 is a schematic view illustrating a state in which the gantry crane is lowered to the end of the arm of the guide beam in the embodiment of the present invention. Reference numerals:

100. a base part; 200. a support portion; 201. a support block; 202. a support arm; 203. a first connection block; 204. a second connecting block; 300. a connecting portion; 301. cushion blocks; 400. a limiting part; 401. a first limit end; 402. a second limit end; 403. a limiting block; 404. thickening the layer; 500. a traveling section; 501. a traveling wheel; 502. anti-overturning wheels; 601. the middle part of the nose girder machine arm; 602. a cross bolster; 603. the end part of the nose girder machine arm; 701. a load-bearing main beam; 702. a first leg; 703. a clamping block; 704. a traveling wheel train; 705. a second leg; 706. reinforcing ribs; 707. and (4) a jacking oil cylinder.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

As shown in fig. 1, a guide girder is erected on an existing railway line, the guide girder has a guide girder arm middle part 601 along a railway traveling direction and a pad cross beam 602 along a pier direction, the guide girder arm middle part 601 and the pad cross beam 602 form a rectangle, wherein the guide girder arm middle part 601 is used for providing a running track for a gantry crane so that the gantry crane can move on the guide girder arm middle part 601 and hoist a new and old girder, the pad cross beam 602 is erected on the pier and is used for supporting the guide girder arm middle part 601, in addition, both ends of the guide girder arm middle part 601 extend out of a guide girder arm end part 603, and the guide girder arm end part 603 is used for providing a certain working space for the gantry crane to enter the guide girder arm middle part 601, i.e. the gantry crane is guided to run on the guide girder arm middle part 601 through the guide girder arm end part 603.

As shown in fig. 2, the gantry crane is installed on the support part 200 of the gantry crane support, and the support part 200 is in a low position state, that is, the bottom end of the gantry crane is in a state close to the rail, and in this state, the height of the gantry crane is low, so that the height limit of the railway can be easily avoided. When the portal crane was transported to nose girder department, operating personnel needed to operate supporting part 200 and raised on connecting portion 300 to fix supporting part 200 through spacing portion 400, the height that the portal crane bottom was then accorded with and can transfer smoothly to the height on the nose girder this moment, thereby is convenient for transfer the portal crane fast. In the process of lifting the supporting portion 200, the supporting portion can be lifted by an external force, or the structure itself may be provided with a lifting system, for example, the connecting portion 300 includes a hydraulic device disposed at the top end of the base portion 100 and a hydraulic output shaft rotatably connected to the supporting portion 200, and a circular groove for inserting the hydraulic output shaft is correspondingly formed in the center of the bottom end of the supporting portion 200. The lifting of the support part 200 can be easily realized by the hydraulic device and the hydraulic output shaft, and the limit function of the limit part 400, that is, the height of the support part 200 can be fixed by the hydraulic device by controlling the movement of the liquid in the hydraulic device. The lower end of the base part 100 is provided with a walking part 500, and the walking part 500 is provided for regular movement of the structure.

As shown in fig. 2, the supporting portion 200 is formed with a longitudinal through hole and movably sleeved on the connecting portion 300 through the through hole. In this embodiment, the supporting portion 200 is sleeved on the connecting portion 300 through the through hole, and by adopting the movable connection manner, firstly, the relative movement between the supporting portion 200 and the connecting portion 300 can be realized, so as to guide the lifting of the supporting portion 200, and on the other hand, the movable range of the lifting of the supporting portion 200 can be larger through the structure, namely, the supporting portion 200 can be lowered to the surface of the base portion 100, so that the gantry crane supported by the supporting portion 200 can also be lowered to the lowest height, thereby further avoiding the problem that the gantry crane exceeds the height limit of the railway.

As shown in fig. 2, the limiting portion 400 is disposed at the top end of the supporting portion 200, the limiting portion 400 has a first limiting end 401 movably connected to the supporting portion 200 and a second limiting end 402 detachably connected to the supporting portion 200, and the limiting portion 400 avoids or limits the connecting portion 300 by the cooperation of the first limiting end 401 and the second limiting end 402. In this embodiment, the limiting part 400 is optimized, and the supporting part 200 is sleeved on the connecting part 300 through the through hole, so that the limiting part 400 is arranged at the top end of the supporting part 200, the through hole is limited or avoided through the limiting part 400 to limit or avoid the connecting part 300, when the connecting part 300 needs to be avoided, only the second limiting end 402 needs to be separated from the supporting part 200, and then the second limiting end 402 is far away from the through hole through the relative motion between the first limiting end 401 and the supporting part 200 to avoid the connecting part 300, and the connecting part 300 can realize the relative motion with the through hole; when the connection portion 300 needs to be avoided, only the second limiting end 402 needs to be fixed with the support portion 200, and the limiting portion 400 is fixed, so that the limiting portion 400 limits the connection portion 300 and can prevent the support portion 200 from descending. The supporting portion 200 may be connected to the first position-limiting end 401 through a hinge, a slide rail, or other conventional connection means, and the supporting portion 200 may also be connected to the second position-limiting end 402 through a snap, an overlap, a pin, or other conventional connection means.

As shown in fig. 2, the limiting portion 400 includes a pair of limiting blocks 403 arranged on two radial sides of the through hole, one end of each limiting block 403 far away from the through hole is hinged to the supporting portion 200, one end of each limiting block 403 close to the through hole is in pin connection with the supporting portion 200, a first connecting block 203 is arranged at the top end of the supporting portion 200 corresponding to the pin connection end of the limiting block 403, transverse pin holes are formed in the limiting blocks 403 and the first connecting blocks 203, and a telescopic pin shaft is arranged in the transverse pin holes of the limiting blocks 403. In this embodiment, the limiting portion 400 includes a pair of limiting blocks 403, the first limiting end 401 thereof is hinged to the supporting portion 200, the second limiting end 402 thereof is pin-connected to the supporting portion 200, the pin-connected end of the limiting blocks 403 is used as the main stress portion limited by the connecting portion 300, and the limiting blocks 403 are provided in a pair, so that the stress between the limiting process and the connecting portion 300 is more uniform, the loss of the structure is reduced, and the occupied space of the limiting blocks 403 in the process of avoiding the connecting portion 300 can be effectively reduced. The retractable pin shaft in the transverse pin hole of the limiting block 403 comprises end shafts with polarities at two ends and an electromagnet at the middle part, and an operator can control the on-off of the current inside the electromagnet to change a magnetic field, so that the end shafts are attracted or repelled, and the end shafts can be conveniently inserted into or withdrawn from the transverse pin hole of the first connecting block 203. The retractable pin is not limited to the above embodiment, and a rod-shaped structure having a retractable capability, such as an electric retractable rod, may be used.

As shown in fig. 2, a thickened layer 404 is disposed at one end of the limiting block 403 close to the through hole. In this embodiment, the end of the limiting block 403 close to the through hole is the end stressed by the connecting portion 300, so that the thickening layer 404 can be arranged, the stress intensity of the limiting block 403 can be effectively increased by arranging the thickening layer 404, the stability of limiting with the connecting portion 300 is ensured, and as a more optimized scheme, the thickening layer 404 can be integrally formed with the limiting block 403.

The thickened layer 404 is arranged on the side of the limiting block 403 far away from the connecting part 300. In this embodiment, the position of the thickening layer 404 is further limited to change the gravity center of the limiting block 403 during avoiding the connecting portion 300, that is, when the second limiting end 402 is separated from the supporting portion 200, the limiting block 403 is away from the connecting portion 300 under the action of the gravity center under the action of the thickening layer 404, so that the movement of the limiting block 403 is limited, the function of fixing the limiting block 403 is changed, and the equipment abrasion caused by the contact between the limiting block 403 and the connecting portion 300 is avoided.

As shown in fig. 3, the supporting portion 200 includes a supporting block 201, a through hole, a limiting block 403 and a first connecting block 203 are all disposed on the supporting block 201, the supporting portion 200 further includes a supporting arm 202 hinged on two sides of the supporting block 201 and capable of being turned upwards, a second connecting block 204 is disposed on the supporting arm 202, and in a state that the supporting arm 202 is turned upwards, the retractable pin shaft is connected with a pin hole of the second connecting block 204 by a pin. In this embodiment, set up support arm 202, when stacking the portal crane support one end that moves to fortune roof beam special column, can upwards overturn support arm 202 to the horizontal length of effectual reduction portal crane support, consequently can effectively save the space in the horizontal direction, thereby provide more space and the operating space of putting for other equipment. In order to ensure that the supporting arm 202 can be vertically placed stably, after the supporting arm 202 is turned upwards, the telescopic pin shaft inside the limiting block 403 is controlled to be connected with the pin hole formed in the second connecting block 204, so that the limiting block 403 and the supporting arm 202 are mutually matched and limited, the limiting block 403 cannot be contacted with the connecting part 300, the supporting arm 202 is prevented from being turned downwards, the telescopic pin shaft is further utilized, and the utilization rate of the telescopic pin shaft is maximized. For better structural optimization, the stoppers 403 may be in the form of split doors, and the support arms 202 are also in the form of split doors and are respectively disposed on the extension lines of the stoppers 403.

As shown in fig. 2 and 5, the connection part 300 has a cylindrical structure and matches the shape of the through hole. In this embodiment, the shape of the connecting portion 300 and the through hole is defined such that the supporting portion 200 can rotate around the connecting portion 300, which is advantageous in that when the gantry crane is transported, the supporting portion 200 can be rotated such that the length direction of the gantry crane coincides with the railway traveling direction, thereby effectively avoiding the problem that the gantry crane exceeds the railway width clearance. When the gantry crane is transported to the guide beam, the supporting part 200 is rotated.

As shown in fig. 2, a flat cylindrical spacer 301 is provided at the tip of the connecting portion 300, and the diameter of the spacer 301 is smaller than that of the connecting portion 300. Set up the rotation of supporting part 200 of then being convenient for at this embodiment cushion 301, when supporting part 200 rotated, mainly rotate on connecting portion 300 through spacing portion 400, set up cushion 301 and then can effectively reduce the area of contact of the two, thereby reduce the frictional force during rotation, and then make the rotation process become laborsaving, but need notice simultaneously, the area of cushion 301 should not be undersized, otherwise can make frictional force undersize, thereby easily cause supporting part 200 also to rotate under the condition that receives unmanned external force, reduce the stability and the security of structure, and the determination of cushion 301 area size can be calculated by the weight of the portal crane that the staff supported as required, thereby give the most scientific data.

The traveling part 500 includes traveling wheels 501 for traveling on the rail, and rollover prevention wheels 502 provided outside the rail for preventing the base part 100 from rolling over. In the present embodiment, the walking wheels 501 are mainly responsible for the movement of the structure, and the anti-rolling wheels 502 can avoid the adverse conditions of rolling over of the structure.

It should be added that, as shown in fig. 4 and 6, the lifting of the supporting portion 200 can also be realized by a gantry crane having a lifting function. As shown in fig. 4, the gantry crane includes a bearing main beam 701 provided with a hoisting system, four first legs 702 are uniformly and symmetrically fixed at the lower end of the bearing main beam 701, a guide channel is arranged at the bottom end of the first legs 702, second legs 705 with a traveling gear train 704 are movably inserted in the guide channel, a reinforcing rib 706 is connected between the lower ends of the second legs 705 in the width direction of the gantry crane, and the reinforcing rib 706 is connected with the bearing main beam 701 directly above the reinforcing rib through a jacking cylinder 707. The second support leg 705 can be driven to move up and down in the corresponding guide channel of the first support leg 702 by the push-pull force of the jacking cylinder 707, so that the lifting movement of the gantry crane is realized, the inner sides of the first support legs 702 are provided with the fixture blocks 703 for being matched with the support part 200, and the support of the gantry crane by the support part 200 is realized by the support part 200 being pushed against the bottom ends of the fixture blocks 703.

When the gantry crane needs to be conveyed to the end part 603 of the nose girder boom, the supporting part 200 and the fixture block 703 of the gantry crane can be fixed by adopting conventional technologies such as bolts or fasteners, then the jacking cylinder 707 is controlled to extend, at this time, the fixture block 703 of the gantry crane rises to drive the supporting part 200 to rise along the connecting part 300, and then the limiting block 403 and the first connecting block 203 are fixed through the telescopic pin shaft. And then the jacking oil cylinder 707 is contracted, and at the moment, the jacking oil cylinder 707 drives the second supporting leg 705 to ascend through the reinforcing rib 706.

The bottom end of the gantry crane is equal to or slightly higher than the end part 603 of the nose girder horn, if the bottom end of the gantry crane is exactly equal to the end part 603 of the nose girder horn, the gantry crane can be directly lowered onto the end part 603 of the nose girder horn, and unstable lowering of the gantry crane due to height difference can be avoided; if the traveling gear 704 is slightly higher, the lift cylinder 707 needs to be controlled to extend, and the second leg 705 can extend and contact with the end 603 of the arm of the guide beam, so that the vehicle can be smoothly lowered. At this time, the gantry crane is smoothly lowered to the end part 603 of the nose girder horn, and then the gantry crane can smoothly enter the middle part 601 of the nose girder horn.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.