CN219449078U - Hydraulic supporting leg lifting device of gantry crane - Google Patents

Abstract

The utility model discloses a hydraulic support leg lifting device of a gantry crane, which comprises a moving mechanism, a first support frame and a fixed frame, wherein the first support frame is arranged at the top of the moving mechanism, a hydraulic lifting rod is arranged in the first support frame, two support sliding rods are arranged in the first support frame, a second support frame is movably arranged in the first support frame, limit posts are movably arranged in the fixed frame, limit grooves are formed in two sides of the second support frame, a plurality of limit blocks are arranged in the limit grooves at equal intervals, and the limit posts are arranged in a matched mode with the limit blocks. According to the utility model, the pressure born by the hydraulic lifting rod can be reduced through the limiting installation between the limiting column and the limiting block, and the situation that the crane suddenly falls from high altitude can be avoided through the supporting effect of the limiting column on the limiting block when the hydraulic lifting rod suddenly fails in a pressure loss manner during use, so that the safety of the crane during use is ensured.

Description

Hydraulic supporting leg lifting device of gantry crane

Technical Field

The utility model relates to the technical field of portal cranes, in particular to a hydraulic supporting leg lifting device of a portal crane.

Background

Gantry cranes are a variant of bridge cranes, also called gantry cranes. The device is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk cargoes. The portal crane has the characteristics of high field utilization rate, large operation range, wide application range, strong universality and the like, is widely used in port cargo yards, has a metal structure like a portal frame, is provided with two supporting legs below a bearing main beam, can directly walk on a track on the ground, and can be provided with overhanging cantilever beams at two ends of the main beam.

When the existing portal crane is used, in order to flexibly change the lifting height, hydraulic lifting supporting legs are adopted, and in the use process of the existing hydraulic supporting legs, the internal hydraulic structure of the existing hydraulic supporting legs bears a large weight for a long time, so that oil leakage and pressure loss occur when the hydraulic structure stretches out and draws back, the crane suddenly falls from the high altitude, and the use effect of the whole portal crane is huge.

Therefore, a hydraulic supporting leg lifting device of a gantry crane is specially provided.

Disclosure of Invention

The utility model aims to provide a hydraulic support leg lifting device of a gantry crane, which aims to solve the problems in the background art, and in order to achieve the purposes, the utility model provides the following technical scheme: the utility model provides a hydraulic support leg elevating gear of gantry crane, includes moving mechanism, first support frame and mount, first support frame is installed at moving mechanism's top, the internally mounted of first support frame has hydraulic lifting rod, the internally mounted of first support frame has two support slide bars, the inside movable mounting of first support frame has the second support frame, the mounting bracket is installed to the both sides of first support frame, the inside articulated mount that has of mounting bracket, the inside movable mounting of mount has spacing post, the spacing groove has been seted up to the both sides of second support frame, a plurality of stoppers are installed to the inside equidistance in spacing groove, cooperation installation between spacing post and the stopper, electric putter is surmounted on the top of first support frame, electric putter's top is articulated with one side of mount, the walking wheel is installed to moving mechanism's bottom.

Preferably, the support slide bar is located the both sides of hydraulic lifting rod, the output of hydraulic lifting rod is connected with the second support frame bottom.

Preferably, the supporting slide bars are equal in size, and the top ends of the two supporting slide bars extend into the second supporting frame.

Preferably, the first sliding groove is formed in the first supporting frame, supporting sliding blocks are mounted on two sides of the second supporting frame, and the supporting sliding blocks are slidably mounted in the first sliding groove.

Preferably, the inner wall of the fixing frame is provided with a second chute, and one end of the electric push rod is slidably arranged in the second chute.

Preferably, a motor is arranged at the top end of the moving mechanism, and the output end of the motor is in transmission connection with the travelling wheel.

Preferably, one side of the first support frame is hinged with an access door, and the access door is communicated with the inside of the first support frame.

Preferably, the movable groove is formed in the fixing frame, a spring is mounted in the movable groove, and the spring is connected with one end of the limiting column.

Compared with the prior art, the utility model provides the hydraulic support leg lifting device of the portal crane, which has the following beneficial effects:

through being provided with mount, spacing post, spacing groove and stopper, spacing installation can reduce the pressure that hydraulic lifting rod received between spacing post and the stopper, can avoid the hoist to take place from the condition that the high altitude falls suddenly through the supporting role of spacing post to the stopper when the hydraulic lifting rod takes place the decompression trouble suddenly when using, has ensured the security of hoist in the use.

Drawings

FIG. 1 is a schematic diagram of the main structure of the present utility model;

FIG. 2 is a schematic view of the appearance structure of the present utility model;

FIG. 3 is a schematic side view of the present utility model;

fig. 4 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: 1. a moving mechanism; 2. a first support frame; 3. supporting a slide bar; 4. a first chute; 5. a support slider; 6. a mounting frame; 7. a second chute; 8. a fixing frame; 9. a limit groove; 10. a limiting block; 11. an electric push rod; 12. a second support frame; 13. a hydraulic lifting rod; 14. a motor; 15. a walking wheel; 16. an access door; 17. a movable groove; 18. a spring; 19. and a limit column.

Detailed Description

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

Example 1: the top of mobile mechanism 1 installs first support frame 2, the internally mounted of first support frame 2 has hydraulic lifting rod 13, the internally mounted of first support frame 2 has two support slide bars 3, the inside movable mounting of first support frame 2 has second support frame 12, mounting bracket 6 is installed to the both sides of first support frame 2, the inside of mounting bracket 6 articulates there is mount 8, the inside movable mounting of mount 8 has spacing post 19, spacing groove 9 has been seted up to the both sides of second support frame 12, a plurality of stoppers 10 are installed to the inside equidistance of spacing groove 9, cooperation installation between spacing post 19 and the stopper 10, electric putter 11 is in the top of first support frame 2, electric putter 11's top is articulated with one side of mount 8, walking wheel 15 is installed to the bottom of mobile mechanism 1.

Specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the second support frame 12 can be lifted in the first support frame 2 through the expansion and contraction of the output end of the hydraulic lifting rod 13, so that the height of the second support frame 12 is changed, as the limiting groove 9 is formed in the second support frame 12, the limiting block 10 is installed in the limiting groove 9, the top end of the fixing frame 8 which is hinged inside the mounting frame 6 can be inserted into the limiting groove 9 through the expansion and contraction of the output end of the electric push rod 11, the limiting column 19 which is installed inside the fixing frame 8 can be in limiting installation with the limiting block 10, the supporting force is provided for the second support frame 12, the pressure borne by the hydraulic lifting rod 13 can be reduced through the limiting installation between the limiting column 19 and the limiting block 10, the sudden situation of the crane from the high altitude can be avoided through the supporting action of the limiting column 19 when the hydraulic lifting rod 13 suddenly breaks down in use, and the safety of the crane in the falling process is ensured.

Example 2: the support slide bar 3 is located the both sides of hydraulic lifting rod 13, the output of hydraulic lifting rod 13 is connected with the second support frame 12 bottom, the size of support slide bar 3 equals, and the inside of second support frame 12 is all extended into on two support slide bar 3 tops, first spout 4 has been seted up to the inside of first support frame 2, support slider 5 is all installed to the both sides of second support frame 12, support slider 5 slidable mounting is in the inside of first spout 4, second spout 7 has been seted up to the inner wall of mount 8, electric putter's 11 one end slidable mounting is inside second spout 7, motor 14 is installed on the top of mobile mechanism 1, and the output and the walking wheel 15 transmission of motor 14 are connected, one side of first support frame 2 articulates there is access door 16, and access door 16 is linked together with the inside of first support frame 2, movable groove 17 has been seted up to the inside of movable groove 17, the internally mounted of movable groove 17 has spring 18, spring 18 is connected with the one end of spacing post 19.

Specifically, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, in the process of moving the second support frame 12, the supporting sliding blocks 5 installed at two sides of the second support frame 12 slide inside the first sliding groove 4, meanwhile, the second support frame 12 slides outside the supporting sliding rod 3, stability is provided for the movement of the second support frame 12, when the output end of the electric push rod 11 stretches out and draws back, the output end of the electric push rod 11 slides inside the second sliding groove 7, thereby controlling the fixing frame 8 to rotate inside the mounting frame 6, and controlling the installation state between the limiting columns 19 and the limiting blocks 10, as the movable groove 17 is arranged inside the fixing frame 8, and the spring 18 is installed inside the movable groove 17, the limiting columns 19 can be compressed inside the movable groove 17 and then pop out again through the spring 18, when the second support frame 12 ascends, the limiting blocks 10 installed inside the limiting grooves 9 sequentially compress the limiting columns 19 inside the movable groove 17 and then pop out again until the second support frame 12 stops ascending until the limiting columns 19 can be inserted between the two limiting blocks 10, thereby avoiding the situation that the second support frame 12 is supported by the second support frame 12 due to the sudden descending of the second support frame 13 caused by the sudden descending of the second support frame 13 in the ascending process.

Working principle: during the use, when rising the hoist height, through the extension of hydraulic lifting rod 13 output, can go out second support frame 12 from the inside propelling movement of first support frame 2, simultaneously through the shrink of electric putter 11 output with the inside articulated mount 8 upset of mounting bracket 6, make mount 8 internally mounted spacing post 19 insert the inside of spacing groove 9, along with the continuous rising of second support frame 12, spacing groove 9 internally mounted's stopper 10 can extrude movable mounting's inside spacing post 19 in movable groove 17 in proper order, and spacing post 19 can be through movable groove 17 internally mounted's spring 18 re-ejection to insert between two stoppers 10 and support second support frame 12, avoid second support frame 12 to rise the in-process because of hydraulic lifting rod 13 trouble leads to the condition emergence of second support frame 12 suddenly to descend, when reducing the height, need take out spacing post 19 from between two stoppers 10, again through electric putter 11 output single propelling movement with mount 8 upset back can, then accomodate second support frame 12 in the inside of first support frame 2 through hydraulic lifting rod 13 output.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. The utility model provides a hydraulic support leg elevating gear of gantry crane, includes moving mechanism (1), first support frame (2) and mount (8), its characterized in that: the utility model discloses a hydraulic lifting mechanism for a bicycle, including moving mechanism (1), including first support frame (1), second support frame (2), spacing post (19), spacing groove (9) are seted up at the inside movable mounting of moving mechanism (1), hydraulic lifting rod (13) are installed at the top of first support frame (2), two support slide bars (3) are installed to the internally mounted of first support frame (2), second support frame (12) are installed to the inside movable mounting of first support frame (2), mounting bracket (6) are installed to the inside articulated of mounting bracket (6), spacing post (19) are installed to the inside movable mounting of mounting bracket (8), spacing groove (9) are seted up to the both sides of second support frame (12), a plurality of stoppers (10) are installed to the inside equidistance of spacing post (19) and stopper (10), electric putter (11) are installed to the top of first support frame (2) and articulated with one side of mounting bracket (8), walking wheel (15) are installed to the bottom of moving mechanism (1).

2. The hydraulic leg lifting device of a gantry crane according to claim 1, wherein: the support slide bars (3) are positioned on two sides of the hydraulic lifting rod (13), and the output end of the hydraulic lifting rod (13) is connected with the bottom end of the second support frame (12).

3. The hydraulic leg lifting device of a gantry crane according to claim 2, wherein: the supporting slide bars (3) are equal in size, and the top ends of the two supporting slide bars (3) extend into the second supporting frame (12).

4. The hydraulic leg lifting device of a gantry crane according to claim 1, wherein: the first sliding groove (4) is formed in the first supporting frame (2), supporting sliding blocks (5) are arranged on two sides of the second supporting frame (12), and the supporting sliding blocks (5) are slidably arranged in the first sliding groove (4).

5. The hydraulic leg lifting device of a gantry crane according to claim 1, wherein: the inner wall of the fixing frame (8) is provided with a second chute (7), and one end of the electric push rod (11) is slidably arranged in the second chute (7).

6. The hydraulic leg lifting device of a gantry crane according to claim 1, wherein: the top end of the moving mechanism (1) is provided with a motor (14), and the output end of the motor (14) is in transmission connection with the travelling wheel (15).

7. The hydraulic leg lifting device of a gantry crane according to claim 1, wherein: one side of the first support frame (2) is hinged with an access door (16), and the access door (16) is communicated with the inside of the first support frame (2).

8. The hydraulic leg lifting device of a gantry crane according to claim 1, wherein: the movable groove (17) is formed in the fixing frame (8), a spring (18) is mounted in the movable groove (17), and the spring (18) is connected with one end of the limiting column (19).