CN116081460A - Low-clearance portal crane - Google Patents
Low-clearance portal crane Download PDFInfo
- Publication number
- CN116081460A CN116081460A CN202310366347.7A CN202310366347A CN116081460A CN 116081460 A CN116081460 A CN 116081460A CN 202310366347 A CN202310366347 A CN 202310366347A CN 116081460 A CN116081460 A CN 116081460A
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- Prior art keywords
- track
- water
- hollow tube
- block
- rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/08—Constructional features of runway rails or rail mountings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/10—Undercarriages or bogies, e.g. end carriages, end bogies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a low-clearance portal crane, which comprises a crane body and a track part, wherein the track part comprises a segment track, the interior of the segment track is detachably arranged with an external roadbed through a pre-buried bolt group, the bottom of the crane body is in rolling installation with the upper surface of the segment track through a steel wheel, the outer surface of the segment track is tightly attached with track clamping plates, and two pairs of track clamping plates are symmetrically distributed by taking the segment track as a center. This low headroom gantry crane can solve among the prior art effectively, when the rail is installed, mainly gives the rail through steel sheet and bolt and fixes, then the butt joint of rail mainly carries out both sides locking through track splint, and track splint can't adjust rail joint interval, causes follow-up equipment to operate for a long time after, and rail joint interval is bigger and bigger, and then exists the problem that causes equipment to roll over hidden danger.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a low-clearance portal crane.
Background
With the current larger engineering, the crane plays an important role, and the current development trend of the crane is high speed, large-scale, intelligent and automatic. The portal crane has a larger and larger effect, and needs to be continuously improved, so that the portal crane has better and better performance, and further, the requirements of more clients are met.
The damage of the metal structure part is one of potential safety hazards causing the tipping accident of the portal crane, and the problem of the footed foundation and the track of the portal crane is also an important cause causing the tipping of equipment, such as uneven surface of a concrete foundation, subsidence and subsidence of a foundation, overlarge spacing of rail joints and the like, which can cause the tipping of the equipment. The installation of current rail mainly gives the rail through steel sheet and bolt and fixes, then the butt joint of rail mainly carries out both sides locking through track splint, and track splint can't adjust rail joint interval, causes follow-up equipment to operate for a long time after, rail joint interval is bigger and bigger, and then exists the hidden danger that causes equipment to roll over.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects existing in the prior art, the invention provides a low-clearance portal crane, which can effectively solve the problems that in the prior art, when a steel rail is installed, the steel rail is fixed mainly through a steel sheet and bolts, then the butt joint of the steel rail is locked at two sides mainly through rail clamping plates, the rail clamping plates cannot adjust the distance between rail joints, so that after subsequent equipment operates for a long time, the distance between the rail joints is larger and larger, and the potential problem of equipment rollover is caused.
Technical proposal
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a low-clearance portal crane, which comprises:
a crane body;
the track part comprises a segment track, the interior of the segment track is detachably mounted with an external roadbed through a pre-buried bolt group, the bottom of the crane body is mounted with the upper surface of the segment track in a rolling way through a steel wheel, and a track clamping plate is tightly attached to the outer surface of the segment track;
the pair of track clamping plates are arranged in two and symmetrically distributed by taking the section track as a center, the track clamping plates are slidably connected with a combination block through sliding holes formed in the track clamping plates, screw rods in threaded connection with the inner parts of the combination blocks are rotationally connected to the side surfaces of the section track, and threaded rods in threaded connection with the inner parts of the track clamping plates are rotationally connected to the outer surfaces of the combination blocks.
Further, the device also comprises a protection part, the protection part comprises a walking unit, a walking wheel closely attached to the upper surface of the section track is arranged at the bottom of the walking unit in a transmission way, and the walking unit is rotationally connected with a protection part through a bracket arranged on the outer surface of the walking unit and used for rapidly removing rainwater impurities on the upper surface of the section track.
Further, the lower surface of the walking unit is rotationally connected with a positioning wheel attached to the side surface of the section track, and the positioning wheel is positioned above the track clamping plate.
Further, the protector includes the hollow tube, hollow tube circumference surface and the inside rotation of support are connected, the hollow tube is through seting up the drainage hole fixed intercommunication at its circumference surface and have the open box, the inseparable laminating of open box inner wall has the water permeable tray, the inside piece that absorbs water that is provided with of water permeable tray, the open box outside is provided with the driven gear with hollow tube circumference surface fixed connection, walking unit inside rotation is connected with the driving gear with driven gear surface meshing connection.
Further, the water permeable disc is installed through the inside block of locating pin and the open box of setting in its side, open box surface fixedly connected with U type piece, U type piece inner wall sliding connection has the counter weight pole that laminates mutually with the water absorption piece surface, open box and water permeable disc all set up with counter weight pole circumference surface sliding connection's U type groove.
Further, the walking unit is close to support one side fixedly connected with waterproof board, waterproof board inside rotates to be connected with the polished rod that extrudees mutually with the water absorption piece surface.
Furthermore, the end face of the hollow pipe is sleeved with an eduction pipe, and the hollow pipe is fixedly connected with a spindle rod through a cross partition plate arranged on the inner wall of the hollow pipe.
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention is provided with a track part, the segment track is preliminarily fixed by virtue of the embedded bolt group and the steel sheet, then the combination block is aligned with the screw rod, the screw rod is rotated by the screwdriver to drive the combination block to be continuously close to the segment track, the track clamping plates are driven to be tightly attached to the side surfaces of the segment track, and then the two groups of track clamping plates are used for correcting, clamping and fixing the joint of the segment track. Through rotatory threaded rod, promote the joint piece and slide along the sliding hole inner wall, two sets of joint pieces are constantly drawn together, and then drive adjacent section track and constantly be close to, realize seamless connection between the section track, until the two closely laminating together, lock lead screw and pre-buried bolt group at last. By utilizing the matching of the track clamping plates and the combining blocks, the segment track can be corrected and aligned, the fixed clamping effect on the segment track can be achieved, and the problem that after the equipment operates for a long time, the joint space of the segment track is larger and larger, so that the equipment is overturned is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of a three-dimensional structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a three-dimensional combination of a track portion and a guard portion according to an embodiment of the present invention;
FIG. 3 is a schematic view of a track portion three-dimensional separation structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a perspective structure of a guard portion according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a three-dimensional separation structure of a bracket and a guard according to an embodiment of the present invention;
FIG. 6 is a schematic view of a partial perspective separation of a guard according to an embodiment of the present invention;
FIG. 7 is a schematic view showing a three-dimensional separation structure of a hollow tube and a cross partition plate according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a three-dimensional combination structure of a polish rod and a water absorbing block according to an embodiment of the present invention.
Reference numerals in the drawings represent respectively: 1. a crane body; 2. a rail portion; 21. a segment track; 22. track clamping plates; 23. a slide hole; 24. a combining block; 25. a screw rod; 26. a threaded rod; 3. a protective part; 31. a walking unit; 32. a walking wheel; 33. a bracket; 34. a guard; 341. a hollow tube; 3411. an eduction tube; 3412. a cross partition; 3413. a spindle lever; 342. drainage holes; 343. an open box; 3431. a U-shaped block; 3432. a U-shaped groove; 344. a water permeable disc; 3441. a positioning pin; 345. a water absorption block; 346. a driven gear; 347. a weight bar; 35. a positioning wheel; 36. a drive gear; 37. a waterproof board; 371. and (5) a polish rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples:
referring to fig. 1-8, the present invention provides a technical solution: a low clearance gantry crane comprising:
a crane body 1;
the track part 2 comprises a segment track 21, wherein the segment track 21 is detachably arranged with an external roadbed through a pre-buried bolt group, the bottom of the crane body 1 is in rolling installation with the upper surface of the segment track 21 through a steel wheel, and a track clamping plate 22 is tightly attached to the outer surface of the segment track 21;
the pair of track clamping plates 22 are arranged in two and symmetrically distributed by taking the segment track 21 as a center, the track clamping plates 22 are slidably connected with a combining block 24 through a sliding hole 23 formed in the track clamping plates, a screw rod 25 in threaded connection with the inside of the combining block 24 is rotatably connected to the side surface of the segment track 21, and a threaded rod 26 in threaded connection with the inside of the track clamping plates 22 is rotatably connected to the outer surface of the combining block 24. The segment rail 21 is preliminarily fixed by means of the embedded bolt groups and the steel sheets, the combining block 24 is aligned to the screw rod 25, the screw rod 25 is rotated by the screw driver to drive the combining block 24 to be continuously close to the segment rail 21, the rail clamping plates 22 are driven to be tightly attached to the side surfaces of the segment rail 21, and then the two groups of rail clamping plates 22 are used for correcting, clamping and fixing the joint of the segment rail 21. Through rotatory threaded rod 26, promote the joint piece 24 and slide along slide hole 23 inner wall, two sets of joint pieces 24 are continuous to draw close, and then drive adjacent section track 21 and be continuous to be close to, realize seamless connection between the section track 21, until the two closely laminate together, lock lead screw 25 and pre-buried bolt group at last.
The device further comprises a protection part 3, wherein the protection part 3 comprises a walking unit 31, a walking wheel 32 closely attached to the upper surface of the section track 21 is arranged at the bottom of the walking unit 31 in a transmission manner, and the walking unit 31 is rotatably connected with a protection piece 34 through a bracket 33 arranged on the outer surface of the walking unit 31 and used for rapidly removing rainwater impurities on the upper surface of the section track 21.
The lower surface of the walking unit 31 is rotationally connected with positioning wheels 35 attached to the side surfaces of the section tracks 21, the positioning wheels 35 are positioned above the track clamping plates 22, the positioning wheels 35 on two sides play an auxiliary role, the whole stable running of the protection part 3 is maintained, and the protection part 3 is prevented from being offset and turned on one's side.
The guard 34 includes hollow tube 341, and hollow tube 341 circumference surface and the inside rotation connection of support 33, hollow tube 341 is through seting up the drainage hole 342 fixed intercommunication at its circumference surface and is had open box 343, and open box 343 inner wall closely laminating has the dish 344 that permeates water, and the inside water-absorbing block 345 that is provided with of dish 344, open box 343 outside be provided with hollow tube 341 circumference surface fixed connection's driven gear 346, walking unit 31 inside rotation connection have with driven gear 346 surface meshing connection's driving gear 36.
The water permeable disc 344 is mounted in a clamping manner with the inside of the open box 343 through a positioning pin 3441 arranged on the side surface of the water permeable disc 344, a U-shaped block 3431 is fixedly connected to the outer surface of the open box 343, a counterweight rod 347 attached to the outer surface of the water absorbent block 345 is slidably connected to the inner wall of the U-shaped block 3431, U-shaped grooves 3432 slidably connected to the circumferential outer surface of the counterweight rod 347 are formed in the open box 343 and the water permeable disc 344, the counterweight rod 347 is composed of a steel rod and a bolt, the water absorbent block 345 is placed into the water permeable disc 344, the steel rod in the counterweight rod 347 is attached to the middle of the water absorbent block, the water absorbent block 345 and the water permeable disc 344 are locked by the bolts at two ends, the worn water absorbent block 345 is prevented from being replaced quickly, and meanwhile the steel rod plays a blocking role to prevent the water absorbent block 345 from being separated from the water permeable disc 344 under the centrifugal effect.
The walking unit 31 is close to support 33 one side fixedly connected with waterproof board 37, and waterproof board 37 inside rotates to be connected with the polished rod 371 that extrudees mutually with the water absorption piece 345 surface.
The hollow tube 341 is provided with an outlet tube 3411 in a sleeve manner at an end face thereof, the outlet tube 3411 extending a water discharge distance of the hollow tube 341, and the hollow tube 341 is fixedly connected with a spindle 3413 through a cross partition plate 3412 provided on an inner wall thereof. The cross partition 3412 equally divides the hollow tube 341 into four equal parts, the hollow tube 341 is not communicated with each other, the middle of the spindle 3413 is thick, the two ends of the spindle are thin, and an inclined cambered surface is formed, when rainwater in the water suction block 345 is discharged into the drainage hole 342 under pressure and falls into the outer surface of the spindle 3413, the cross partition 3412 can well separate rainwater (prevent the rainwater from flowing out of other water suction blocks 345), and the inclined cambered surface of the spindle 3413 is matched to accelerate the rainwater to be discharged from the port of the hollow tube 341.
Referring to fig. 1-8, the destruction of the metal structural part is one of the safety hazards causing the tipping accident of the gantry crane, and the problem of the foothold foundation and the rail of the gantry crane is also an important cause of the tipping of the equipment. The existing steel rail is installed, the steel rail is fixed mainly through steel sheets and bolts, then the butt joint of the steel rail is locked on two sides mainly through rail clamping plates, the rail clamping plates cannot adjust the distance between the steel rail joints, so that after the follow-up equipment operates for a long time, the distance between the steel rail joints is larger and larger, and further the hidden danger of equipment tipping exists;
in order to overcome the defects, the invention designs a low-clearance portal crane.
Specifically, the track section 2 is laid and mounted:
firstly, the segment track 21 on the track part 2 is placed on an external roadbed, then the segment track 21 is preliminarily fixed by means of the embedded bolt groups and the steel sheets, then the combining block 24 is aligned to the screw rod 25, the screw rod 25 is rotated by the screw driver to drive the combining block 24 to be continuously close to the segment track 21 (the screw driver on the left side and the screw driver on the right side are alternately rotated), the track clamping plates 22 are driven to be tightly attached to the side surfaces of the segment track 21, and then the joint of the segment track 21 is corrected, clamped and fixed by the two groups of track clamping plates 22. At first, because the combining blocks 24 can slide in the sliding holes 23, when the adjacent segment tracks 21 are in butt joint, the matching of the combining blocks 24 and the screw rods 25 is not affected by the distance between the adjacent segment tracks 21, the combining blocks 24 are pushed to slide along the inner walls of the sliding holes 23 by rotating the threaded rods 26, the two groups of combining blocks 24 are continuously closed, the adjacent segment tracks 21 are further driven to be continuously close, seamless connection between the segment tracks 21 is realized, the adjacent segment tracks are tightly attached together, and finally the screw rods 25 and the embedded bolt groups are locked. By utilizing the matching of the track clamping plates 22 and the combining blocks 24, not only can the segment track 21 be corrected and aligned, but also the fixed clamping effect on the segment track 21 can be achieved, and the problem that after the equipment operates for a long time, the joint spacing of the segment track 21 is larger and larger, so that the equipment is overturned is avoided.
The invention also provides a protection part 3 for quickly removing the rainwater on the upper surface of the segment track 21 after the rain, thereby greatly shortening the erosion time of the rainwater and prolonging the service life of the segment track 21.
Specifically, the running gear 31 on the protecting part 3 mainly includes a housing and a driving device (the driving device includes three parts of a prime mover, a transmission device and a brake), the prime mover driving running wheel 32 inside the running gear 31 rolls on the upper surface of the segment track 21 to drive the protecting part 3 to integrally advance or retreat, and meanwhile, the positioning wheels 35 on two sides play an auxiliary role to maintain the integral stable running of the protecting part 3 and avoid the protecting part 3 from shifting and turning on one side. During the slow movement of the traveling unit 31, the driving gear 36 (the prime mover drives the driving gear 36 to rotate through the transmission device) inside the traveling unit 31 synchronously rotates by engaging the driven gear 346 on the transmission guard 34, and then drives the hollow tube 341 to synchronously rotate, so as to drive the open box 343, the water permeable disc 344, the water absorbing block 345 and the counterweight rod 347 to synchronously rotate; because the inside of the water absorption block 345 is mainly filled with sponge, the water absorption block has good water absorption and elasticity, the outside is wrapped with a wear-resistant air permeable layer (such as nylon, terylene and the like), the opening box 343, the water absorption disc 344 and the outer outline of the water absorption block 345 are all circular arc-shaped, the water absorption block 345 is subjected to self-elastic action, a part of the water absorption disc 344 protrudes, when the water absorption block 345 rotates downwards, the water absorption block 345 contacts with rainwater on the upper surface of the segment track 21 (the counterweight rod 347 is influenced by self gravity and slides to the lowest along the inner wall of the U-shaped block 3431, at the moment, the counterweight rod 347 still does not contact with the segment track 21), the segment track 21 extrudes the water absorption block 345 (the contact area is increased), the water absorption block 345 starts to rapidly absorb the rainwater on the upper surface of the segment track 21, after the water absorption block 345 finishes water absorption, the water absorption block 345 starts to rotate upwards (the counterweight rod 347 and the inner wall of the U-shaped block 3432 is prevented from collision with the polish rod 371), the water absorption block 345 contacts with the polish rod 371, the polish rod 371 can rotate automatically, the polish rod 371 reduces the self-rotation, the polish rod 371 and the water absorption block 345 slides to the two sides along the inner wall of the U-shaped block 3432, the water absorption block 345 is completely rotates to the two adjacent to the water absorption block (the two sides of the water absorption block is completely and completely removed by the water absorption block 31), the water absorption block is completely flows into the water absorption block 31, and then flows into the water absorption block 31, and flows into the water absorption block 345, and flows into the water block and enters into the water pump unit through the water absorption block and is completely through the water absorption block groove 31, and is completely through the water absorption block 3, and is completely through the water absorption pipe. The rainwater on the upper surface of the segment track 21 is quickly removed (including dust impurities and the like), so that the erosion time of the rainwater is shortened.
The cross partition 3412 and the spindle 3413 cooperate with each other to provide the following design advantages:
1. firstly, the cross partition plate 3412 equally divides the hollow tube 341 into four equal parts, which are not communicated with each other, secondly, the spindle 3413 is thick in the middle and thin at two ends, so as to form an inclined cambered surface, when rainwater in the water suction block 345 is discharged into the drainage hole 342 under pressure and falls into the outer surface of the spindle 3413, the cross partition plate 3412 can well separate the rainwater (prevent the rainwater from flowing out of other water suction blocks 345), and the inclined cambered surface of the spindle 3413 is matched to accelerate the drainage of the rainwater from the port of the hollow tube 341 (the drainage pipe 3411 prolongs the drainage distance of the hollow tube 341).
2. Before the upper water absorbing block 345 rotates to the lower side, the inclined cambered surfaces of the spindle rods 3413 are beneficial to discharging rainwater, and a small amount of raindrops fall to the outer surface of the water absorbing block 345 rotating to the lower side, so that the water absorbing block 345 can absorb the raindrops again, and the raindrops are prevented from falling to the outer surface of the segment track 21.
The counterweight rod 347, the U-shaped block 3431 and the U-shaped groove 3432 cooperate with design advantages:
1. firstly, the counterweight rod 347 consists of a steel rod and bolts, the water absorption block 345 is placed in the water permeable disc 344, the steel rod in the counterweight rod 347 is attached and pressed from the middle, the water absorption block 345 and the water permeable disc 344 are combined into a whole by utilizing the locking of the bolts at two ends, the worn water absorption block 345 is prevented from being replaced quickly, meanwhile, the steel rod plays a blocking role, and the water absorption block 345 after water absorption is prevented from being separated from the water permeable disc 344 by centrifugal action.
2. The variability of the position of the weight 347, when the weight 347 rotates to the lowest, the weight 347 presses the water-absorbing block 345 to the lowest amount, so that the normal absorption of the water-absorbing block 345 is not disturbed; when the counterweight rod 347 rotates to the uppermost position, firstly, the pressure of the counterweight rod 347 is not only favorable for draining rainwater in the water absorption block 345, secondly, the pressure of the counterweight rod 347 plays a role in fixing the water absorption block 345, so that a great amount of deflection of the water absorption block 345 is avoided in the process of mutually extruding and sliding the water absorption block 345 and the polished rod 371, and secondly, the counterweight rod 347 presses from the middle part of the water absorption block 345, the water absorption block 345 is stressed to elastically deform, two side surfaces of the water absorption block 345 are separated from the inner wall of the water permeable disc 344 and are close to the middle part of the water permeable disc 344, and rainwater leakage during extrusion of the polished rod 371 is effectively prevented.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A low clearance gantry crane, comprising:
a crane body (1);
the track part (2), the track part (2) comprises a section track (21), the section track (21) is detachably mounted with an external roadbed through a pre-buried bolt group, the bottom of the crane body (1) is mounted with the upper surface of the section track (21) in a rolling way through a steel wheel, and a track clamping plate (22) is tightly attached to the outer surface of the section track (21);
the pair of track clamping plates (22) are arranged in two and symmetrically distributed by taking a section track (21) as a center, the track clamping plates (22) are slidably connected with a combination block (24) through sliding holes (23) formed in the track clamping plates, screw rods (25) in threaded connection with the inner parts of the combination blocks (24) are rotatably connected to the side surfaces of the section track (21), and threaded rods (26) in threaded connection with the inner parts of the track clamping plates (22) are rotatably connected to the outer surfaces of the combination blocks (24).
2. A low clearance gantry crane according to claim 1, characterized in that: the novel rain water treatment device is characterized by further comprising a protection part (3), wherein the protection part (3) comprises a walking unit (31), a walking wheel (32) tightly attached to the upper surface of the section track (21) is arranged at the bottom of the walking unit (31) in a transmission manner, and the walking unit (31) is rotationally connected with a protection piece (34) through a bracket (33) arranged on the outer surface of the walking unit, so that rain water impurities on the upper surface of the section track (21) are rapidly removed.
3. A low clearance gantry crane according to claim 2, characterized in that: the lower surface of the walking unit (31) is rotationally connected with a positioning wheel (35) attached to the side surface of the section track (21), and the positioning wheel (35) is positioned above the track clamping plate (22).
4. A low clearance gantry crane according to claim 2, characterized in that: the protection piece (34) comprises a hollow tube (341), the circumference outer surface of the hollow tube (341) is rotationally connected with the inside of the support (33), an opening box (343) is fixedly communicated with a drainage hole (342) formed in the circumference outer surface of the hollow tube (341), a water permeable disc (344) is tightly attached to the inner wall of the opening box (343), a water absorbing block (345) is arranged inside the water permeable disc (344), a driven gear (346) fixedly connected with the circumference outer surface of the hollow tube (341) is arranged outside the opening box (343), and a driving gear (36) meshed and connected with the outer surface of the driven gear (346) is rotationally connected inside the walking unit (31).
5. A low clearance gantry crane according to claim 4, wherein: the utility model discloses a water-permeable disc (344) is installed through setting up locating pin (3441) and the inside block of open box (343) in its side, open box (343) surface fixedly connected with U type piece (3431), U type piece (3431) inner wall sliding connection has counter weight pole (347) that laminate mutually with water absorption piece (345) surface, open box (343) and water-permeable disc (344) all offer U type groove (3432) with counter weight pole (347) circumference surface sliding connection.
6. A low clearance gantry crane according to claim 4, wherein: the walking unit (31) is close to one side of the support (33) and fixedly connected with a waterproof board (37), and a polish rod (371) extruded with the outer surface of the water absorption block (345) is rotatably connected inside the waterproof board (37).
7. A low clearance gantry crane according to claim 4, wherein: the end face of the hollow tube (341) is sleeved with an eduction tube (3411), and the hollow tube (341) is fixedly connected with a spindle rod (3413) through a cross baffle plate (3412) arranged on the inner wall of the hollow tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310366347.7A CN116081460B (en) | 2023-04-07 | 2023-04-07 | Low-clearance portal crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310366347.7A CN116081460B (en) | 2023-04-07 | 2023-04-07 | Low-clearance portal crane |
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| CN116081460A true CN116081460A (en) | 2023-05-09 |
| CN116081460B CN116081460B (en) | 2023-06-20 |
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| CN202310366347.7A Active CN116081460B (en) | 2023-04-07 | 2023-04-07 | Low-clearance portal crane |
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| CN113565545A (en) * | 2021-09-03 | 2021-10-29 | 河北东风世景轨道有限公司 | Cloth trolley is hung to tunnel waterproof board |
| CN113605172A (en) * | 2021-08-02 | 2021-11-05 | 河南中交路通工程监理咨询有限公司 | Permeable pavement and construction method thereof |
| CN216197379U (en) * | 2021-08-25 | 2022-04-05 | 贵州乌江水电开发有限责任公司 | Can dismantle main room gate track stop device that becomes of hydroelectric power plant |
| CN114541186A (en) * | 2022-02-26 | 2022-05-27 | 山西国华永盛机电设备有限公司 | Composite material fishplate for steel rail connection |
| CN216638695U (en) * | 2022-04-25 | 2022-05-31 | 河南省路港起重机集团有限公司 | Gantry crane with prevent structure of toppling |
| CN114852527A (en) * | 2022-05-17 | 2022-08-05 | 杨文海 | Magnesite building materials production strorage device |
| CN217838145U (en) * | 2022-05-26 | 2022-11-18 | 鞍钢股份有限公司 | Device capable of adjusting telescopic distance of sliding wire of crane |
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2023
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| CN113605172A (en) * | 2021-08-02 | 2021-11-05 | 河南中交路通工程监理咨询有限公司 | Permeable pavement and construction method thereof |
| CN216197379U (en) * | 2021-08-25 | 2022-04-05 | 贵州乌江水电开发有限责任公司 | Can dismantle main room gate track stop device that becomes of hydroelectric power plant |
| CN113565545A (en) * | 2021-09-03 | 2021-10-29 | 河北东风世景轨道有限公司 | Cloth trolley is hung to tunnel waterproof board |
| CN114541186A (en) * | 2022-02-26 | 2022-05-27 | 山西国华永盛机电设备有限公司 | Composite material fishplate for steel rail connection |
| CN216638695U (en) * | 2022-04-25 | 2022-05-31 | 河南省路港起重机集团有限公司 | Gantry crane with prevent structure of toppling |
| CN114852527A (en) * | 2022-05-17 | 2022-08-05 | 杨文海 | Magnesite building materials production strorage device |
| CN217838145U (en) * | 2022-05-26 | 2022-11-18 | 鞍钢股份有限公司 | Device capable of adjusting telescopic distance of sliding wire of crane |
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|---|---|
| CN116081460B (en) | 2023-06-20 |
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