CN214422111U

CN214422111U - Portable gantry crane

Info

Publication number: CN214422111U
Application number: CN202120271088.6U
Authority: CN
Inventors: 曾夏平; 李奭训
Original assignee: Central Grain Reserve Taihe Warehouse Co ltd
Current assignee: Central Grain Reserve Taihe Warehouse Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-10-19
Anticipated expiration: 2031-02-01

Abstract

The utility model belongs to the field of hoisting devices, and relates to a portable gantry crane, which comprises a base, a stand column and a crossbeam, wherein the base is provided with rollers at the bottom, the stand column is respectively arranged on the base, the crossbeam is arranged on the stand column, the stand column comprises a lower stand column with a hollow interior and a telescopic column arranged in the lower stand column, a locking mechanism is arranged between the lower stand column and the telescopic column, the portable gantry crane also comprises a telescopic column lifting mechanism for lifting and lowering the telescopic column, the lower stand column is provided with a holding mechanism for holding the telescopic column tightly, the holding mechanism comprises a fixed seat fixedly arranged on the side wall at the upper end of the lower stand column, the fixed seat is provided with a holding claw, the holding claw is provided with a locking mechanism for holding the holding claw tightly on the outer surface of the telescopic column, the problem that a space exists between the telescopic column and the lower stand column of the gantry crane in the prior art is solved, when the gantry crane is used as a safety operation device for people needing to climb, or when the hoisted object moves, the hoisted object is easy to shake, so that the problem of danger is caused.

Description

Portable gantry crane

Technical Field

The utility model relates to a hoisting accessory field especially relates to a portable portal crane.

Background

Some small gantry cranes, as of filing date: 20150601, patent No.: 201520366412.7, patent name: the utility model provides a height-adjustable's removal portal frame, includes that two bottoms are provided with the base of gyro wheel and set up the stand on the base and set up the crossbeam on the stand respectively, and the stand is including setting up the hollow lower stand of inside on the base and setting up the flexible post in the stand down, is provided with evenly distributed's locating hole on a set of relative lateral wall of stand down, is provided with the locating pin in the locating hole, and the end of flexible post is provided with the pinhole that uses with the locating hole is supporting, and the locating pin can run through the pinhole. A stay bar is arranged between the lower upright post and the base, a steel wire rope reel is arranged on the stay bar at one side of the lower upright post, a steel wire rope is arranged on the steel wire rope reel, a rotating handle is also arranged on the steel wire rope reel, a fixed pulley and a vertical slotted hole are arranged at the top end of the lower upright post, the fixed pulley and the slotted hole are arranged on the same side wall of the lower upright post and are positioned at the same side of the lower upright post as the steel wire rope reel, the radial direction of the fixed pulley is perpendicular to the side wall of the lower upright post, the fixed pulley is embedded in the slotted hole, and the axis of the fixed pulley is positioned outside the lower upright post; the bottom of flexible post is provided with the lifting pulley, and wire rope's one end sets up on the wire rope reel, and the other end once is fixed on the top of the lateral wall of the opposite side of lower stand behind fixed pulley and lifting pulley.

Although the gantry crane with the structure can adjust the height of the gantry crane, a space exists between the telescopic column and the lower upright column, and when the gantry crane is used as a safe operation device for people needing to climb up or hoisted objects move, the gantry crane is easy to shake, so that danger is caused. And this portal crane supports the downforce of crossbeam only through locating pin and wire rope to the power of propping up the lift pulley, causes danger such as rope-off easily when bearing the weight of thing safely.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a portable portal crane, has the space between the flexible post of portal crane among the solution prior art and the lower stand, when the portal crane is as the personnel's of need climbing safety operation device, or when hoist and mount article remove, rocks easily, causes dangerous problem.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a portable gantry crane, be provided with the base of gyro wheel including the bottom and set up the stand on the base and set up the crossbeam on the stand respectively, the stand includes inside hollow lower stand and sets up the flexible post in the stand down, be provided with locking mechanical system between lower stand and the flexible post, portable gantry crane is still including being used for promoting and transferring the flexible post hoist mechanism of stretching out and drawing back, be provided with on the stand down with the mechanism of holding tightly of flexible post, hold tightly the mechanism including fixed setting up the fixing base of stand upper end lateral wall under, be provided with on the fixing base and hold tightly the claw, it is used for holding tightly the claw tightly to hold tightly to be provided with on the claw the locking mechanical system of flexible post surface.

Further preferably, the fixing base comprises a left fixing base and a right fixing base, an upper groove base is arranged on the upper side wall of the lower upright post, an upper supporting base is arranged in a groove of the upper groove base, an upper left dovetail groove and an upper right dovetail groove are respectively arranged on the left side and the right side of the upper supporting base, a lower groove base is arranged on the lower side wall of the lower upright post, a lower supporting base is arranged in a groove of the lower groove base, a lower left dovetail groove and a lower right dovetail groove are respectively arranged on the left side and the right side of the lower supporting base, the upper end and the lower end of the left fixing base are respectively arranged in the upper left dovetail groove and the lower left dovetail groove in a spanning manner, the left fixing base can move left and right, the upper end and the lower end of the right fixing base are respectively arranged in the upper right dovetail groove and the lower right dovetail groove in a spanning manner, the right fixing base can move left and right, the clasping claw comprises a left clasping claw and a right clasping claw, the left clasping claw is arranged on the left fixing base, the right clamping claw is arranged on the right fixing base, the locking mechanism comprises bolt-nut assemblies correspondingly arranged at the two ends of the left fixing base and the two ends of the right fixing base respectively, the right groove walls of the upper left dovetail groove and the lower left dovetail groove are blocking surfaces for blocking the left fixing seat when the left fixing seat and the right fixing seat are locked, and the left groove walls of the upper right dovetail groove and the lower right dovetail groove are blocking surfaces for blocking the right fixing seat when the left fixing seat and the right fixing seat are locked.

Further preferably, be provided with the left dead lever on the fixing base of a left side, the inside portion cover that the left dead lever is located left fixing base is equipped with left spring, the left side is embraced tight claw and is overlapped on left dead lever through the left sleeve that sets up, the fixed setting of one end of left spring is on left dead lever, the other end is fixed to be set up in left sleeve, be provided with right dead lever on the fixing base of the right side, the inside portion cover that right dead lever is located right fixing base is equipped with right spring, the right side is embraced tight claw and is overlapped on right dead lever through the right sleeve that sets up, the one end of right spring is fixed to be set up on right dead lever, the other end is fixed to be set up in right sleeve.

In other embodiments, the fixing base includes left fixing base and right fixing base, be provided with the recess seat on the last lateral wall of lower stand, be provided with in the recess of going up the recess seat and prop the seat, be provided with down the recess seat on the lower lateral wall of lower stand, be provided with down in the recess of lower recess seat and prop the seat, the both ends of left fixing base are fixed respectively and are striden the left side of establishing at last seat and propping the seat down, the both ends of right fixing base are fixed respectively and are striden the right side of establishing at last seat and propping the seat down, it includes that left holding claw and right holding claw tightly to hold the claw tightly, left holding claw wears to establish on left fixing base through left screw rod, the both sides that lie in left fixing base on the left screw rod are provided with the nut respectively, right holding claw wears to establish on right fixing base through right screw rod, it is provided with the nut respectively to lie in right fixing base both sides on the right screw rod.

Above-mentioned further preferred, the recess diapire of going up the recess seat is provided with the screw thread blind hole, it is provided with the through-hole with the position that last screw thread blind hole corresponds to prop the seat on, it is provided with the threaded rod on the seat to prop on, go up threaded rod and last screw thread blind hole screw-thread fit, it is equipped with the pressure spring to go up the cover on the threaded rod, it contradicts on the recess diapire of last recess seat to go up pressure spring one end, the recess diapire of lower recess seat is provided with down the screw thread blind hole, the position that props down the seat and corresponds with lower screw thread blind hole is provided with down the through-hole, prop down and be provided with down the threaded rod on the seat, lower threaded rod and lower screw thread blind hole screw-thread fit, the cover is equipped with down the pressure spring on the threaded rod down, it contradicts the recess diapire of recess seat under to push down spring one end, the other end is contradicted at the diapire of propping the seat down.

Further preferably, the telescopic column lifting mechanism comprises a lower upright column, wherein a supporting fixed pulley is arranged at the top of the lower upright column, a steel wire rope turntable is arranged below the supporting fixed pulley, a lifting movable pulley is arranged at the bottom of the telescopic column, and one end of a steel wire rope is fixed at the top of the lower upright column, bypasses the lifting movable pulley downwards and then is wound on the steel wire rope turntable through the supporting fixed pulley.

The utility model has the advantages that: the utility model discloses a lower stand holds flexible post through holding the claw tightly, when the portal crane as the personnel's of need climbing safety operation device, or when hoist and mount article remove, can not rock, has avoided because there is the space between flexible post and the lower stand, rocks easily, causes dangerous problem.

Furthermore, an upper pressure spring is arranged between the upper groove seat and the upper supporting seat, a lower pressure spring is arranged between the lower groove seat and the lower supporting seat, the upper pressure spring and the lower pressure spring simultaneously provide an upward supporting force for the upper supporting seat, the lower pulling force of a hoisting object on the telescopic column lifting mechanism can be reduced, and the hoisting safety is further ensured.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a telescopic column lifting mechanism according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a clasping mechanism according to a first embodiment of the present invention;

fig. 4 is a top view of a first embodiment of the present invention;

fig. 5 is a portion of fig. 4 in an embodiment of the invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example one

As shown in fig. 1, the structural schematic diagram of this embodiment includes a base 2 having a roller 1 at the bottom, an upright column 3 respectively disposed on the base 2, and a cross beam 4 disposed on the upright column 3, where the upright column 3 includes a lower upright column 31 having a hollow interior and a telescopic column 32 disposed in the lower upright column 31, and a locking mechanism is disposed between the lower upright column 31 and the telescopic column 32, and the locking mechanism in this embodiment may adopt a latch mechanism in the prior art, and a pin hole is disposed between the lower upright column 31 and the telescopic column 32, and when the telescopic column 32 is adjusted to a required height, the lower upright column and the telescopic column are locked by inserting the pin into the pin hole.

The present embodiment further includes a telescopic column lifting mechanism for lifting and lowering the telescopic column 32, and in the present embodiment, preferably, the structure of the telescopic column lifting mechanism includes, as shown in fig. 1 and fig. 2, a lower column 31 having a supporting fixed pulley 33 at the top, a steel cable turntable 34 below the supporting fixed pulley 33, a lifting movable pulley 35 at the bottom of the telescopic column 32, and one end of a steel cable fixed at the top of the lower column 31 and passing downwards around the lifting movable pulley 35 and then being wound on the steel cable turntable 34 via the supporting fixed pulley 33.

The embodiment of the utility model provides a be provided with on lower stand 31 and hold the mechanism of holding tightly of flexible post 32, the mechanism of holding tightly in this embodiment is as shown in fig. 3 and fig. 4, including the fixed fixing base that sets up stand 31 upper end lateral wall down, the fixing base includes left fixing base 5 and right fixing base 6.

An upper groove seat is arranged on the upper side wall of the lower upright column 31, an upper supporting seat 7 is arranged in a groove of the upper groove seat, an upper left dovetail groove 71 and an upper right dovetail groove 72 are respectively arranged on the left side and the right side of the upper supporting seat 7, a lower groove seat is arranged on the lower side wall of the lower upright column 31, a lower supporting seat 8 is arranged in a groove of the lower groove seat, a lower left dovetail groove 81 and a lower right dovetail groove 82 are respectively arranged on the left side and the right side of the lower supporting seat 8, the upper end and the lower end of the left fixing seat 5 are respectively arranged in the upper left dovetail groove 71 and the lower left dovetail groove 81 in a striding manner, the left fixing seat 5 can move left and right, the upper end and the lower end of the right fixing seat 6 are respectively arranged in the upper right dovetail groove 72 and the lower right dovetail groove 82 in a striding manner, and the right fixing seat 6 can move left and right.

The fixing seats are provided with the holding claws, each holding claw comprises a left holding claw 9 and a right holding claw 10, the left holding claw 9 is arranged on the left fixing seat 5, the right holding claw 10 is arranged on the right fixing seat 6, the holding claws are provided with locking mechanisms for holding the holding claws tightly on the outer surface of the telescopic column, as shown in fig. 3 and 4, each locking mechanism comprises an upper bolt-nut assembly 11 and a lower bolt-nut assembly 12, the two ends of the left fixing seat 5 and the two ends of the right fixing seat 6 are correspondingly arranged, the right groove walls of the upper left dovetail groove 71 and the lower left dovetail groove 81 are blocking surfaces for blocking the left fixing seat 5 when the left fixing seat 5 and the right fixing seat 6 are locked, and the left groove walls of the upper right dovetail groove 72 and the lower right dovetail groove 82 are blocking surfaces for blocking the right fixing seat 6 when the left fixing seat 5 and the right fixing seat 6 are locked.

In this embodiment, be provided with left dead lever 13 on the left fixing base 5, the inside portion cover that left dead lever 13 is located left fixing base 5 is equipped with left spring 14, the left side is embraced tight claw 9 and is adorned on left dead lever 13 through the left sleeve 15 suit that sets up, be provided with the certain distance between the top of left dead lever 13 and the left sleeve 15 bottom, the fixed setting on left dead lever 13 of one end of left spring 14, the other end is fixed to be set up in left sleeve 15, be provided with right dead lever 16 on the right fixing base 6, the inside portion cover that right dead lever 16 is located right fixing base 6 is equipped with right spring 17, right side is embraced tight claw 10 and is adorned on right dead lever 16 through the right sleeve 18 suit that sets up, be provided with the certain distance between the top of right dead lever 16 and right sleeve 18 bottom, the fixed setting on right dead lever 16 of one end of right spring 17, the other end is fixed to be set up in right sleeve 18.

Certainly in other embodiments, the fixing base includes left fixing base and right fixing base, be provided with the recess seat on the last lateral wall of lower stand, be provided with in the recess of going up the recess seat and prop the seat, be provided with down the recess seat on the lower lateral wall of lower stand, be provided with down in the recess of lower recess seat and prop the seat, the both ends of left fixing base are fixed respectively and are striden the left side of establishing at last seat and propping the seat down, the both ends of right fixing base are fixed respectively and are striden the right side of establishing at last seat and propping the seat down, it includes that left side is embraced claw and right side and is embraced tightly the claw tightly to embrace the claw tightly, left side is embraced tightly the claw and is worn to establish on left fixing base through left screw rod, the both sides that lie in left fixing base on the left screw rod are provided with the nut respectively, right side is embraced tightly the claw and is worn to establish on right fixing base through right screw rod, it is provided with the nut respectively to lie in right fixing base both sides on the right screw rod.

In this embodiment, preferably, as shown in fig. 5, the groove bottom wall of the upper groove seat is provided with an upper blind hole 19, a position of the upper support seat 7 corresponding to the upper blind hole 19 is provided with an upper through hole, the upper support seat 7 is provided with an upper threaded rod 20, the upper threaded rod 20 is in threaded fit with the upper blind hole 19, the upper threaded rod is sleeved with an upper pressure spring 21, one end of the upper pressure spring 21 abuts against the bottom wall of the upper groove seat, the other end abuts against the bottom wall of the upper support seat 7, the lower groove seat has the same structure as the upper groove seat, the groove bottom wall of the lower groove seat is provided with a lower blind hole, the lower support seat is provided with a lower through hole at a position corresponding to the lower blind hole, the lower threaded rod is in threaded fit with the lower blind hole, the lower threaded rod is sleeved with a lower pressure spring, one end of the lower pressure spring abuts against the groove bottom wall of the lower groove seat, and the other end abuts against the bottom wall of the lower support seat. An upper pressure spring is arranged between the upper groove seat and the upper supporting seat, a lower pressure spring is arranged between the lower groove seat and the lower supporting seat, the upper pressure spring and the lower pressure spring simultaneously provide an upward supporting force for the upper supporting seat, the lower pulling force of a lifting object for the telescopic column lifting mechanism can be reduced, and the lifting safety is further guaranteed.

This embodiment is when using, earlier through last threaded rod and lower threaded rod adjust respectively on prop the seat with prop the dynamics of propping tightly of seat down, then adjust flexible post 32 to the height that needs, utilize the pin to insert in the pinhole with down stand 31 and flexible post 32 locking, then bolt-nut subassembly and lower bolt-nut subassembly in the adjustment, make left side hold tightly claw 9 and right side hold tightly claw 10 and hold flexible post 32 tightly, this embodiment is when the personnel's of need climbing up safety operation device, or when hoist and mount article remove, can not rock, avoided because there is the space between flexible post and the lower stand, rock easily, cause dangerous problem.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the protection scope of the present invention.

Claims

1. The utility model provides a portable gantry crane, includes that the bottom is provided with the base of gyro wheel and sets up the stand on the base and set up the crossbeam on the stand respectively, the stand includes inside hollow lower stand and sets up the flexible post in the stand down, is provided with locking mechanical system between lower stand and the flexible post, portable gantry crane is still including being used for promoting and transferring the flexible post hoist mechanism of flexible post, a serial communication port, be provided with on the stand down with flexible post is embraced tightly and is constructed, it is in including fixed the setting to embrace tightly the mechanism the fixing base of stand upper end lateral wall down, be provided with on the fixing base and embrace tightly the claw, it is used for embracing tightly to embrace tightly the claw the locking mechanism of flexible post surface to embrace tightly on the claw.

2. The portable gantry crane according to claim 1, wherein the fixing seats comprise a left fixing seat and a right fixing seat, an upper groove seat is arranged on the upper side wall of the lower upright post, an upper supporting seat is arranged in the groove of the upper groove seat, an upper left dovetail groove and an upper right dovetail groove are respectively arranged on the left side and the right side of the upper supporting seat, a lower groove seat is arranged on the lower side wall of the lower upright post, a lower supporting seat is arranged in the groove of the lower groove seat, a lower left dovetail groove and a lower right dovetail groove are respectively arranged on the left side and the right side of the lower supporting seat, the upper end and the lower end of the left fixing seat are respectively arranged in the upper left dovetail groove and the lower left dovetail groove in a spanning manner, the left fixing seat can move left and right, the upper end and the lower end of the right fixing seat are respectively arranged in the upper right dovetail groove and the lower right dovetail groove in a spanning manner, the right fixing seat can move left and right, the clasping claws comprise a left clasping claw and a right clasping claw, the left side is held the claw and is set up on the fixing base of a left side, the right side is held the claw and is set up on the fixing base of the right side, locking mechanism includes the both ends of left side fixing base with the bolt and nut subassembly that the both ends of right side fixing base correspond the setting respectively, go up left dovetail with the right cell wall of lower left dovetail is for when left side fixing base with right side fixing base is when locking will the block face of left side fixing base block, go up right dovetail with the left cell wall of lower right dovetail is for when left side fixing base with right side fixing base is when locking will the block face of right side fixing base block.

3. The portable gantry crane of claim 2, wherein a left fixing rod is arranged on the left fixing seat, a left spring is sleeved on the inner side portion of the left fixing seat, the left clamping claw is sleeved on the left fixing rod through a set left sleeve, one end of the left spring is fixedly arranged on the left fixing rod, the other end of the left spring is fixedly arranged in the left sleeve, a right fixing rod is arranged on the right fixing seat, a right spring is sleeved on the inner side portion of the right fixing seat, the right clamping claw is sleeved on the right fixing rod through a set right sleeve, one end of the right spring is fixedly arranged on the right fixing rod, and the other end of the right spring is fixedly arranged in the right sleeve.

4. The portable gantry crane according to claim 1, wherein the fixing base comprises a left fixing base and a right fixing base, an upper groove base is disposed on an upper sidewall of the lower column, an upper support base is disposed in a groove of the upper groove base, a lower groove base is disposed on a lower sidewall of the lower column, a lower support base is disposed in a groove of the lower groove base, two ends of the left fixing base are respectively and fixedly straddled on left sides of the upper support base and the lower support base, two ends of the right fixing base are respectively and fixedly straddled on right sides of the upper support base and the lower support base, the clasping claw comprises a left clasping claw and a right clasping claw, the left clasping claw is arranged on the left fixing base by a left screw rod in a penetrating manner, nuts are respectively arranged on two sides of the left fixing base on the left screw rod in a penetrating manner by a right screw rod, and nuts are respectively arranged on the right screw rod and positioned on two sides of the right fixed seat.

5. The portable gantry crane according to claim 2, 3 or 4, wherein the bottom wall of the upper groove is provided with an upper blind hole, the upper support seat is provided with an upper through hole at a position corresponding to the upper blind hole, the upper support seat is provided with an upper threaded rod, the upper threaded rod is in threaded fit with the upper blind hole, the upper threaded rod is sleeved with an upper pressure spring, one end of the upper pressure spring abuts against the bottom wall of the upper groove seat, the other end of the upper pressure spring abuts against the bottom wall of the upper support seat, the bottom wall of the lower groove seat is provided with a lower blind hole, the lower support seat is provided with a lower through hole at a position corresponding to the lower blind hole, the lower support seat is internally provided with a lower threaded rod, the lower threaded rod is in threaded fit with the lower blind hole, the lower threaded rod is sleeved with a lower pressure spring, and one end of the lower pressure spring abuts against the bottom wall of the lower groove seat, the other end of the lower support is abutted against the bottom wall of the lower support seat.

6. The portable gantry crane according to claim 5, wherein the lifting mechanism of the telescopic column comprises a fixed supporting pulley mounted on the top of the lower column, a rotating table of a wire rope mounted under the fixed supporting pulley, and a movable lifting pulley mounted on the bottom of the telescopic column, wherein one end of the wire rope is fixed on the top of the lower column, passes through the movable lifting pulley downwards, and then is wound on the rotating table of the wire rope via the fixed supporting pulley.