Overhead and gantry cranes maintenance tool
The invention belongs to flight-line maintenance technical fields, and in particular to a kind of overhead and gantry cranes maintenance tool.
Bridge crane is that crossbearer carries out the lifting equipment of material handling in workshop, warehouse and stock ground overhead.Due to it
Both ends are located on tall and big concrete column or metallic support, and shape is like bridge.The crane span structure edge of bridge crane is laid on both sides height
Track on frame is longitudinally running, can make full use of the space handling material below crane span structure, not hindered by ground installation.It is
A kind of hoisting machinery that use scope is most wide, quantity is most.To ensure the safe operation of bridge crane, it is often necessary to lifting
The crane span structure of machine is repaired, is maintained.And during crane span structure is repaired, it is often necessary to which crane span structure is sent to eminence by lower.
The method of some current transfers is using driving, during carrying, hooks gantry middle portion with the hook of driving, then makes
Crane span structure rises.This bridge crane structure there are it is certain the defects of：During crane span structure rises, it is unbalance and tilt to be susceptible to crane span structure
Situation, and in case of if unbalance, crane span structure be easy to slide from hook so that it is quick pound to ground, light then damage goods,
It is heavy then cause casualties, increase the security risk in crane span structure maintenance process.
The purpose of the present invention is to provide a kind of overhead and gantry cranes maintenance tools, can effectively reduce crane span structure in uphill process
The middle speed that ground is fallen into when unbalance, improves crane span structure maintenance process safety.
To achieve the above object, the present invention provides following technical solution：Overhead and gantry cranes maintenance tool, including protection
Frame, transmission mechanism, Yin Sheng mechanisms and fixed mechanism；Transmission mechanism includes motor, central gear, first gear and second gear,
The output shaft of motor is connect with central gear, and first gear and second gear are engaged on the both sides of central gear respectively；Draw a liter machine
Structure includes the first screw rod, the second screw rod and drawing lift slab, and the first screw rod is fixedly connected with first gear, the second screw rod and
Second gear is fixedly connected, and the first screw rod, the second screw rod are threadedly coupled with drawing lift slab, and is drawn lift slab and slided with fender bracket
Connection, fender bracket are equipped with the limiting section of sustainable crane span structure；Fixed mechanism includes center convolution bar, spiral plate, support plate and folder
Portion is held, center convolution bar is fixedly connected with central gear, and center convolution bar is threadedly coupled with spiral plate, spiral plate and fender bracket
It is slidably connected, and spiral plate is used to control the opening or closure of clamping part.
The advantageous effect of above-mentioned technical proposal is：
1st, this programme is drawn lift slab and is moved up by the first screw rod, the drive of the second screw rod, so as to move crane span structure, with showing
Have in technology using hook by the way of compare, do not need to not only find crane span structure medium position, but also uphill process central bridge with
The contact area for drawing lift slab is big, it is not easy to the problems such as unbalance occur, crane span structure can be effectively prevent to fall, improve maintenance process safety
2nd, this programme is by limiting section, even if can realize that crane span structure falls, can also be delayed by the supporting role of limiting section
The dropping process of crane span structure is rushed, so as to reduce the speed that crane span structure falls to ground, crane span structure is avoided to drop to ground speed because unexpected
It spends soon, and the safety accident brought, it can further improve maintenance process safety.
3rd, this programme can be realized by center convolution bar, spiral plate, support plate and clamping part when crane span structure is transported to one
Before determining height, clamping part automatically opens, and facilitates crane span structure in uphill process automatically into clamping part, and when crane span structure enters folder
After holding in portion, it is only necessary to rotate backward motor, you can clamping part is allowed to fix crane span structure, crane span structure can be further prevented upper
It is raised to certain altitude and falls grade fortuitous events later, maintenance process safety is good.
4th, this programme can not only reduce the use of power plant by central gear, first gear and second gear, and
And first gear is identical with the rotation direction of second gear, can realize to allow and draw lift slab and rise under the action of two screw rods,
It is more stable to draw lift slab uphill process, and central gear is allowed to be connect with center convolution bar, and realizes the opening and closing process of clamping part simultaneously,
It is compact-sized, ingenious.
Preferred embodiment one, as the preferred embodiment of basic scheme, clamping part includes two and half clamping parts, and half clamping part includes
Oscillating rod and clamping limb, oscillating rod one end are hinged with spiral plate, and the oscillating rod other end is hinged with clamping limb, clamping limb and support plate
It is hinged.It can be realized by simple link mechanism and clamping part allowed to slide up and down to automatically turn on or close with spiral plate
Preferred embodiment two as the preferred embodiment of basic scheme, draws that lift slab includes central plate and two are symmetrically connected to
The side board of the both sides of core, is equipped with sliding slot one and sliding slot two on two opposite side walls of fender bracket, side board
Both ends are slidably connected respectively with the sliding slot one on two opposite side walls of fender bracket, the both ends of another side board respectively with guarantor
Sliding slot two on two opposite side walls of retaining frame is slidably connected.In this way, central plate upward sliding process is more stable.
The preferred embodiment of preferred embodiment three, preferably two, formation two is right between central plate and two side boards
Title is centrally located the limiting slot of plate both sides, and limiting section is pawl, and is equipped with pawl on two opposite side walls of fender bracket,
Pawl can run through limiting slot.For pawl during crane span structure is upward, do not interfere with crane span structure moves up process；And when crane span structure exists
During being transported up because accident from draw be detached from lift slab when, pawl at this time can play a supporting role to crane span structure, so as to slow
Rush the speed that crane span structure falls into ground.
The preferred embodiment of preferred embodiment four, preferably three, the first screw rod are threadedly coupled with a side board, the
Two screw rods are threadedly coupled with another side board.Two screw rods can also play position-limiting action to the both sides of crane span structure, effectively
Prevent crane span structure from being slid from side board, crane span structure operational process is more stablized.
Description of the drawings
Fig. 1 is the sectional view of overhead and gantry cranes maintenance tool embodiment of the present invention；
Fig. 2 is the structure diagram of clamping part in Fig. 1；
Fig. 3 is the vertical view for drawing lift slab in Fig. 1；
Fig. 4 is the side view of fender bracket in Fig. 1.
Below by the further details of explanation of specific embodiment：
Reference numeral in Figure of description includes：Fender bracket 1, sliding slot 1, sliding slot 2 11, pawl 12, motor 2, in
Heart gear 20, the first screw rod 30, second gear 4, the second screw rod 40, draws lift slab 5, central plate 50, side at first gear 3
Plate 51, limiting slot 52, center convolution bar 6, spiral plate 60, support plate 61, oscillating rod 7, clamping limb 70, crane span structure 8.
Embodiment is substantially as shown in Figure 1：Overhead and gantry cranes maintenance tool including fender bracket 1, transmission mechanism, draws liter
Mechanism and fixed mechanism.Fender bracket 1 is square.
As shown in Fig. 2, transmission mechanism include motor 2, central gear 20, first gear 3 and second gear 4, motor 2 it is defeated
Shaft is connect with central gear 20, and first gear 3 and second gear 4 are engaged on the both sides of central gear 20 respectively.
Yin Sheng mechanisms include the first screw rod 30, the second screw rod 40 and draw lift slab 5, the first screw rod 30 and first gear
3 are fixedly connected, and the second screw rod 40 is fixedly connected with second gear 4, the first screw rod 30, the second screw rod 40 bottom end with
Draw lift slab 5 to be threadedly coupled.Specifically thread connecting mode is：As shown in figure 3, drawing, lift slab 5 includes central plate 50 and two symmetrically connect
The side board 51 of the both sides of central plate 50 is connected on, central plate 50 and two side boards 51 are integrally formed, and in I-shaped, central plate
Two limiting slots 52 for being symmetrically distributed in 50 both sides of central plate, the first screw rod 30 and one are formed between 50 and two side boards 51
A side board 51 is threadedly coupled, and the second screw rod 40 is threadedly coupled with another side board 51.As shown in figure 4, the two of fender bracket 1
It is equipped with sliding slot 1 and sliding slot 2 11 on a opposite side wall, the both ends of a side board 51 two with fender bracket 1 respectively
Sliding slot 1 on opposite side wall is slidably connected, the both ends of another side board 51 are opposite with two of fender bracket 1 respectively
Sliding slot 2 11 on side wall is slidably connected.And fender bracket 1 is equipped with the limiting section of sustainable crane span structure 8；Limiting in the present embodiment
Portion is pawl 12, and pawl 12 is equipped on two opposite side walls of fender bracket 1, and pawl 12 can run through limiting slot 52.
Fixed mechanism includes center convolution bar 6, spiral plate 60, support plate 61 and clamping part, center convolution bar 6 and centre tooth
Wheel 20 is fixedly connected, and center convolution bar 6 is threadedly coupled with spiral plate 60, and spiral plate 60 is slidably connected with fender bracket 1, support plate
61 are located at 60 lower section of spiral plate, and support plate 61 is welded with fender bracket 1.Clamping part includes two and half clamping parts, half clamping part packet
Oscillating rod 7 and clamping limb 70 are included, 7 upper end of oscillating rod is hinged with spiral plate 60, and 7 lower end of oscillating rod is hinged with clamping limb 70, clamping
Arm 70 is hinged with support plate 61.In this way, when 60 slide downward of spiral plate, two oscillating rods 7 are swung out, two clamping limbs 70
It opens；When 60 upward sliding of spiral plate, two oscillating rods 7 are inwardly swung, and two clamping limbs 70 are closed.
The crane span structure 8 for rising to eminence will be needed to be placed across on the central plate 50 for drawing lift slab 5, then start motor 2.Electricity
Machine 2 drives central gear 20 to rotate, and first gear 3 and second gear 4 and then rotate.Central gear 20 rotates, and drives center spiral shell
Swing arm 6 rotates, and slide downward, clamping limb 70 swing out and open at once spiral plate 60 immediately.First gear 3 and second gear
4 rotations, drive the first screw rod 30 and the second screw rod 40 to rotate, draw 5 slow upward sliding of lift slab, crane span structure 8 is upward at this time
In the process, only it can allow pawl 12 that upward swing occurs, and eventually pass through limiting slot 52, i.e., pawl 12 does not interfere with crane span structure 8
Move up process.After crane span structure 8 enters between the clamping limb 70 opened, motor 2 is rotated backward, center convolution bar 6 is reversed
Rotation, the upward sliding immediately of spiral plate 60, clamping limb 70 inwardly swings and is closed immediately, so as to clamp crane span structure 8.As it can be seen that i.e.
Crane span structure 8 is made, because accident is detached from lift slab 5 from drawing, also to have pawl 12 that can be played to crane span structure 8 below during being transported up
Supporting role, so as to buffer the speed that crane span structure 8 falls into ground.Still more, the crane span structure 8 in this programme, which is located in, draws on lift slab 5
, compared with using the rising manner of hook in the prior art, this programme central bridge 8 is not susceptible to unbalance etc. in uphill process
Situation.And crane span structure 8 is finally after certain altitude is risen to, can also the portion of being clamped fix, crane span structure 8 can be further prevented to exist
It rises to certain altitude and falls grade fortuitous events later, maintenance process safety is good.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented
Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific embodiment can be used for explaining the content of claim.