CN201722081U - Connecting structure of jacking cylinder and upper cross beam of tower crane - Google Patents

Abstract

The utility model discloses a connecting structure of a jack cylinder and an upper cross beam of a tower crane, which comprises a switching piece pivoted with a connecting lug plate of the upper cross beam and the jack cylinder through a first pin shaft and a second pin shaft respectively, wherein the extending direction of the second pin shaft is different from the first pin shaft. By adopting the connecting structure provided by the utility model, the switching piece is connected between the jack cylinder and the upper cross beam, the connecting lug plate is connected to the upper part of the switching piece through one pin shaft, and the lower part of the switching piece is connected with the jack cylinder through the other pin shaft. An included angle is formed between the upper and the lower connecting pin shafts of the switching piece to enable the jack cylinder to deflect along the two pin shafts, so that the processing and manufacture error can be eliminated through the swing of the oil cylinder along the two pin shafts, and force-bearing condition of the jacking system is optimized and potential safety hazards are ruled out. In addition, the connecting lug plate of the upper cross beam can be welded before the pin shaft holes are processed, so as to guarantee coaxiality of the pin shaft holes.

Description

The connection structure of tower crane lifting cylinder and entablatrance

Technical field

The utility model relates to the hoist mechanism field, relates to the jacking cylinder of jack-up system of tower crane and the connection structure of entablatrance.

Background technology

The jacking cylinder of traditional jack-up system adopts a bearing pin to be connected with upper and lower crossbeam respectively, as shown in Figure 1, processing jacking cylinder 15 and entablatrance 11 be connected otic placode 13 time, must assemble climb frame 21, standard knot 19 etc. earlier, jacking cylinder 15 be connected otic placode 13 usefulness bearing pins and assemble, assemble with the frame 21 that climbs, standard knot 19, join again and be welded on the entablatrance 11.

There is following problem in this connection structure:

1, assemble climb frame, standard knot etc., work capacity is very big, inefficiency, processing charges height;

2, welding back deflection is big, and makes error and cause the pin shaft hole center right alignment of two otic placodes poor, has a strong impact on the effect that contacts that cross sill and standard knot are marked time in the jacking process, and there is very big potential safety hazard in the stressing conditions of deterioration jack-up system.

Especially second problem produces very big potential safety hazard to jacking, illustrates with data below:

The centre distance of supposing two otic placodes is 150mm, since distortion of welding back and making error, the pin shaft hole center height difference 0.5mm of two otic placodes, the mounting distance of oil cylinder (being the full reduced length of oil cylinder) is 2100mm, stroke is 1650mm, and the centre distance that standard knot is marked time is 3940mm, then

(1) the cross sill left and right sides discrepancy in elevation is:

$\mathrm{\Δh}=\frac{3940}{150}\×0.5=13.1\mathrm{mm}$

(2) cross sill cross travel deviation is:

$\mathrm{\Δ}1=\frac{2100+1650}{150}\×0.5=12.5\mathrm{mm}$

Computing value is consistent with CAD setting-out value, as shown in Figure 2.

This making and distortion inaccuracy can cause:

1) the cross sill left and right sides can't be suspended on standard knot marks time, and whole jack-up system can not be worked;

2) even the cross sill left and right sides can be suspended on standard knot marks time, but unbalance stress, local pressure is big, causes framing member to damage, and safety misadventure takes place.

The utility model content

The purpose of this utility model is to provide the connection structure of a kind of tower crane lifting cylinder and entablatrance, to simplify work programme, enhances productivity, and eliminates the welding deformation error.

The purpose of this utility model also is to provide the method for attachment of a kind of tower crane lifting cylinder and entablatrance.

For this reason, on the one hand, the utility model provides the connection structure of a kind of tower crane lifting cylinder and entablatrance, it comprises: adaptor, be connected otic placode and jacking cylinder pivot joint by first bearing pin and second bearing pin and entablatrance respectively, wherein, the bearing of trend of second bearing pin is different from first bearing pin.

Preferably, above-mentioned first bearing pin and the mutual vertical extent of second bearing pin.

Preferably, above-mentioned connection otic placode is soldered to entablatrance.

Preferably, connect otic placode and comprise first otic placode and second otic placode, adaptor comprises the connection ear between first otic placode and second otic placode, and wherein, first bearing pin runs through first otic placode, connects ear and the extension of second otic placode.

Preferably, the both sides, front and back of the connection otic placode of above-mentioned entablatrance are respectively arranged with backplate; The left and right sides of the connection ear of adaptor is provided with left backplate and right backplate, and wherein, backplate is run through at the two ends of first bearing pin respectively and backplate extends.

Preferably, the both sides, front and back of the connection ear of above-mentioned adaptor are respectively arranged with backplate.

In a modification, above-mentioned connection otic placode comprises first otic placode, and correspondingly, adaptor is included in first ear and second ear that extend the first otic placode both sides, and wherein, first bearing pin runs through first ear, first otic placode and second ear in proper order and extends.

On the other hand, the utility model also provides the method for attachment of a kind of tower crane lifting cylinder and entablatrance, it may further comprise the steps: the connection otic placode is soldered on the entablatrance, make jacking cylinder be pivoted to adaptor by first bearing pin, and make the connection otic placode be pivoted to adaptor by second bearing pin, wherein, the bearing of trend of second bearing pin is different with the bearing of trend of first bearing pin.

Preferably, in above-mentioned method of attachment, make the bearing of trend of first bearing pin vertical mutually with the bearing of trend of second bearing pin.

Preferably, in above-mentioned method of attachment, make the connection otic placode be soldered to entablatrance and reprocess pin shaft hole afterwards.

According to method of attachment of the present utility model and connection structure, an adaptor is arranged between jacking cylinder and entablatrance, connect otic placode and be connected with adaptor top by bearing pin, the adaptor bottom is connected with jacking cylinder by bearing pin.Be an angle setting by the upper and lower connection bearing pin that makes adaptor, make jacking cylinder so, to process and manufacturing errors around two bearing pin deflections even have, also can eliminate around the swing of two bearing pins by oil cylinder, thereby reach the stressing conditions of optimizing jack-up system, the purpose that eliminates safe hidden trouble.

In addition, the connection otic placode of entablatrance can weld earlier, reprocesses pin shaft hole, so can guarantee the right alignment of pin shaft hole.

Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.With reference to figure, the utility model is described in further detail below.

Description of drawings

Constitute this specification sheets a part, be used for further understanding accompanying drawing of the present utility model and show preferred embodiment of the present utility model, and be used for illustrating principle of the present utility model with specification sheets.Among the figure:

Fig. 1 shows the scheme drawing of traditional connection structure of the jacking cylinder of jack-up system and entablatrance;

Fig. 2 shows the full-size drawing by the installation error of the caused cross sill of traditional connection structure shown in Figure 1;

Fig. 3 shows the scheme drawing according to the connection structure of the jacking cylinder of the utility model preferred embodiment and entablatrance; And

Fig. 4 shows the enlarged diagram of the local I of connection structure shown in Figure 3.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

Fig. 3 shows the scheme drawing according to the connection structure of the jacking cylinder of the utility model preferred embodiment and entablatrance, and Fig. 4 shows the enlarged diagram of the local I of connection structure shown in Figure 3.As shown in Figure 3 and Figure 4, in this preferred embodiment, the connection structure of jacking cylinder 15 and entablatrance 11 comprises adaptor 12, wherein, the connection otic placode 13 of entablatrance 11 articulates by first bearing pin 23 and adaptor 12, and adaptor 12 is pivoted to jacking cylinder 15 by second bearing pin 25.

The bearing of trend of above-mentioned first bearing pin 23 and second bearing pin 25 is inequality, has an angle.Preferably, first bearing pin 23 extends at left and right directions, can make jacking cylinder 15 forward and backward swings, and second bearing pin 25 extends at fore-and-aft direction, can make jacking cylinder 15 left and right swings.

So, even processing is arranged and make error, also can eliminate, thereby reach the stressing conditions of optimizing jack-up system, the purpose that eliminates safe hidden trouble by the swing of jacking cylinder front, rear, left and right.

Connect otic placode 13 and comprise that first otic placode 131 and second otic placode 132, two connect otic placode 13 and be soldered on the entablatrance 1 reprocessing connecting pin axis hole in advance.

So can eliminate welding deformation, guarantee that two connect the right alignment of the pin shaft hole of otic placode 13, optimize the stressing conditions of jack-up system, eliminate safe hidden trouble.

Adaptor 12 comprises connection ear 123, it is between first otic placode 131 and second otic placode 132, and be provided with backplate 121 in the outside of first otic placode 131, be provided with backplate 125, the first bearing pins 23 orders runs through first otic placode 131, connects ear 123 and 132 extensions of second otic placode in the outside of second otic placode 133.

Wherein, the front side of the connection otic placode 13 of entablatrance 11 is provided with backplate 135, and the backplate that rear side is provided with is not shown; Correspondingly, the front side of the connection ear 123 of adaptor 12 is provided with backplate 127, and the backplate of rear side is not shown.By side guard plate 135,127 before and after being provided with, can limit the deflection angle between adaptor 12 and the entablatrance 11, to play the effect of position limitation protection.

The connection otic placode 13 of entablatrance 11 directly is welded on the entablatrance 11 according to dimensional characteristic, processes the pin shaft hole that entablatrance connects otic placode 13 then, and the right alignment of two pin shaft holes of the connection otic placode 13 of entablatrance is guaranteed like this.

Below to describing according to the jacking cylinder of the utility model preferred embodiment and the method for attachment of entablatrance.

Adaptor 12 tops connect otic placode 13 by bearing pin 23 and connect with entablatrance, connect with jacking cylinder 15 below by bearing pin 25, and, the upper and lower connecting link pin 23,25 of adaptor 12 is laid respectively in two horizontal surfaces, be an angle and extend.So, jacking cylinder is swung a little around two bearing pins and be eliminated processing and manufacturing errors.

Preferably, connecting link pin is extended at left and right directions, can make the forward and backward swing of jacking cylinder, the lower link bearing pin is extended at fore-and-aft direction, can make the left and right swing of jacking cylinder,, swing by the oil cylinder front, rear, left and right and eliminate even therefore processing arranged and make error, thereby optimize the stressing conditions of jack-up system, eliminate safe hidden trouble.

In the connection structure and method of attachment of above preferred embodiment, connect otic placode and comprise first otic placode and second otic placode or more otic placode.

In variant embodiment, connect otic placode and can only comprise an otic placode, correspondingly, adaptor then has two ears in the otic placode both sides, so, the two can be articulated by first bearing pin.By an otic placode only is set, can reduce of the right alignment requirement of two otic placodes to pin shaft hole processing on entablatrance.

Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (7)

1. the connection structure of tower crane lifting cylinder and entablatrance is characterized in that, comprising:

Adaptor (12), respectively by first bearing pin (23) and second bearing pin (25) and entablatrance (11) be connected otic placode (13) and jacking cylinder (15) pivot joint,

Wherein, the bearing of trend of described second bearing pin (25) is different from the direction of described first bearing pin (23).

2. the connection structure of tower crane lifting cylinder according to claim 1 and entablatrance is characterized in that, described first bearing pin (23) and second bearing pin (25) be vertical extent mutually.

3. the connection structure of tower crane lifting cylinder according to claim 1 and entablatrance is characterized in that, described connection otic placode (13) is soldered on the described entablatrance (11).

4. the connection structure of tower crane lifting cylinder according to claim 1 and entablatrance is characterized in that,

Described connection otic placode (13) comprises first otic placode (131) and second otic placode (132),

Described adaptor (12) comprises the connection ear (123) that is positioned between first otic placode (131) and second otic placode (132),

Wherein, described first bearing pin (23) runs through described first otic placode (131), connects ear (123) and second otic placode (132) extension.

5. the connection structure of tower crane lifting cylinder according to claim 1 and entablatrance is characterized in that,

The both sides, front and back of the connection otic placode (13) of described entablatrance (11) are respectively arranged with backplate (135);

The left and right sides of the connection ear (123) of described adaptor (12) is provided with left backplate (121) and right backplate (125),

Wherein, the two ends of described first bearing pin (23) are run through described backplate (121) and backplate (125) extension respectively.

6. the connection structure of tower crane lifting cylinder according to claim 1 and entablatrance is characterized in that, the both sides, front and back of the connection ear (123) of described adaptor (12) are respectively arranged with backplate (127).

7. the connection structure of tower crane lifting cylinder according to claim 1 and entablatrance, it is characterized in that, described connection otic placode comprises first otic placode, correspondingly, described adaptor is included in first ear and second ear that extend the described first otic placode both sides, wherein, described first bearing pin runs through described first ear, first otic placode and the extension of second ear in proper order.

Images