CN205937464U

CN205937464U - Pivot bearing device and have travelling crane of this pivot bearing device with pivot round pin and at least one bearing frame

Info

Publication number: CN205937464U
Application number: CN201620515441.XU
Authority: CN
Inventors: 罗尔夫·海因茨
Original assignee: Terex Demag GmbH
Current assignee: Terex Global GmbH
Priority date: 2015-06-02
Filing date: 2016-05-31
Publication date: 2017-02-08
Anticipated expiration: 2026-05-31
Also published as: DE202015102857U1

Abstract

The utility model relates to a pivot bearing device of pivot round pin (11) and at least one bearing frame (9), wherein the receipt have dead eye bearing housing (10) of (10b), and pivot round pin (11) so that its gliding mode installation in the dead eye (10b). For realizing modified pivot bearing device, suggestion bearing housing (10) are made by synthetic material, especially have the sliding layer. Furthermore, the utility model relates to a have the travelling crane of this kind of pivot bearing device, this hoist is following form: a pivot bearing device (4a) is set up between the base (5a) of upper portion bracket (1) and jib loading boom (5) and/or the 2nd pivot bearing device (4b) quilt set up between upper portion bracket (1) and luffing cylinder (6) and/or the 3rd pivot bearing device (4c) quilt set up between jib loading boom (5) and luffing cylinder (6). The utility model discloses still relate to the travelling crane that has this pivot bearing device.

Description

There is the trunnion bearing device of pivot pin and at least one bearing block and there is this pivot The mobilecrane of axle bearing device

Technical field

This utility model is related to the trunnion bearing device with pivot pin and at least one bearing block, and wherein reception has and has The bearing holder (housing, cover) of dead eye, and described pivot pin installed in the way of so that it is slided in dead eye.This utility model further relates to There is the mobilecrane of this trunnion bearing device.

Background technology

German Disclosure Document DE 2 136 464 discloses a kind of cantilevered for mobilecrane (cantilever-type) and extensile crane arm (jib) trunnion bearing device.Under normal circumstances, rely on amplitude oil cylinder (luffing cylinder), this crane arm can pivot around horizontal pivot pivot pin in its base region.Described pivot pin is institute State the assembly of trunnion bearing device, rely on crane arm described in this pivot pin hinged with centrally-pivoted axle plate.Described centrepin axillare bag Include two vertical side plates being spaced apart from each other at, the bearing block of trunnion bearing device is arranged on each side plate.Prevent each institute State the cylindrical shaft bearing sleeve that bearing block rotation and the reception of described bearing block are preferably made up of bronze.Pivot shaft for crane arm The pivot pin holding is received by two bearing holder (housing, cover)s being mutually aligned.Additionally, on facing each other side, the inclusion of described two set bears against Annular flange flange on crane arm.In addition to the trunnion bearing of crane arm, described crane arm be laterally guided (lateral Guiding) therefore produce via described bearing holder (housing, cover).

In order that described trunnion bearing is freely-movable and in order that bronze bearing on the pivot pin that is for example formed from steel Set abrasion minimizes, and this bearing holder (housing, cover) is by grease lubrication.Such trunnion bearing device bears relatively large power and at present In the case of only carry out less than aboutSmall-angle movement.This can lead to generation in bearing holder (housing, cover) to be greater than 150N/mm²Pressure, And then also generation is greater than 150N/mm on grease²Pressure.Therefore, grease loss, and/or extremely difficult ground is only Enter the load situation of bearing holder (housing, cover).Attempt disperseing this grease in this bearing holder (housing, cover) using lubrication groove.However, can hardly keep away Exempt from grease loss and bearing holder (housing, cover) begins to dry out and weares and teares.So just it is accompanied by so-called stick-slip effect, it leads to by adhering Unbalanced motion with the trunnion bearing device of the composition that slides.This stick-slip effect can lead to the hydraulic means of amplitude oil cylinder and rise The steel construction vibration of weighing arm.In crane operation, these vibrations can make the precise operation of crane arm and positioning more difficult.

Additionally, German Disclosure Document DE 1 575 531 A has been described with generally including the sliding axle of outer shroud and internal ring Hold.Described outer shroud and described internal ring are contacting one another via the spherical surface forming plain bearing arrangement.This makes to be installed Assembly can execute angular movement.Described outer shroud and described internal ring can be produced by synthetic material.But it is stated that this can be used in low Sliding speed, because the bad heat conductivity of synthetic material can not make the dissipation of heat producing in sliding bearing.

Utility model content

The purpose of this utility model is to provide a kind of improvement with pivot pin and two bearing blocks being spaced apart from each other at Trunnion bearing device and the mobilecrane with this trunnion bearing device.

This purpose by have following technical proposals 1 feature there are pivot pin and two bearings being spaced apart from each other at The trunnion bearing device of seat is realizing.And following technical schemes 2 to 14 describes advantageous embodiment of the present utility model.

According to the technical solution of the utility model 1, there is the improved trunnion bearing of pivot pin and at least one bearing block Device, wherein receiving has a bearing holder (housing, cover) with dead eye, and described pivot pin is so that its side of sliding in described dead eye Formula is installed, and described trunnion bearing device is made up of synthetic material by described bearing holder (housing, cover), the fact that especially have sliding layer Realize.Especially combine the bearing block being mutually aligned or bearing block to be oriented, successfully prevent sending out of so-called stick-slip effect Raw, especially bear relatively high-tensile strength and only carry out small-angle movement trunnion bearing device in successfully prevent so-called viscous The generation of sliding effect.Thereby reduce manufacturer or operator complains accordingly, and to lubricate be no longer manufacturer or operator Necessary.

In order to simply orient to described bearing holder (housing, cover), the technical solution of the utility model 2 preferably specifies that described bearing holder (housing, cover) has This spherical outer surface is wherein inserted reverse spherical inside surface to orient described bearing holder (housing, cover) by spherical outer surface.

Have benefited from the orientability of bearing holder (housing, cover), when each bearing holder (housing, cover) stands small-angle movement, prevent on pivot pin There is the vibration owing to stick-slip effect.A relative to each other or bearing block in multiple bearing holder devices is with respect to other The tolerance (tolerances) of multiple machine components can also simply be compensated by these trunnion bearing devices.

The technical solution of the utility model 3 preferably specifies, after orientation has occurred and that, described bearing holder (housing, cover) is fixed on described axle In bearing.

This bearing block is preferably welded to grillage by the technical solution of the utility model 4.Therefore, it can by by fixing front rotation Turn described bearing holder (housing, cover) and compensate welding deformation.Therefore avoid welding described bearing block after to the bearing table being suitable to described bearing holder (housing, cover) The processing in face, thus the described steel construction being connected become simpler and more favourable on the whole.

The technical solution of the utility model 5, preferably described reverse spherical inside surface is formed in bearing saddle bore.

In the technical solution of the utility model 6, the fact that be directly bonded in bearing block respectively by means of two bearing holder (housing, cover)s, Achieve the simplification further of this design.

Alternately, in the technical solution of the utility model 7, described reverse spherical inside surface is preferably formed in and is inserted into axle In middle ring in bearing hole.

In the technical solution of the utility model 8,9, by means of bearing holder (housing, cover) being bonded in middle ring in various situations and/or The fact that described middle ring is bonded or is pressed in bearing saddle bore is it is achieved that the simplification further of this design.

In the technical solution of the utility model 10, when two bearing blocks are spaced separately and install same pivot pin When create about special advantage rotatably.

In the technical solution of the utility model 11, in conjunction with the design with two bearing blocks being spaced apart from each other at, favorably Ground regulation after orientation has occurred and that, described two bearing holder (housing, cover)s is fixed in bearing block, thus when the longitudinal direction in pivot pin During upper observation, the dead eye of described bearing holder (housing, cover) is in alignment with each other.Have benefited from the dead eye being mutually aligned, when multiple bearing holder (housing, cover)s stand little During angular movement, the vibration occurring owing to stick-slip effect is prevented on pivot pin.Bearing holder device relative to each other In tolerance can also be by these trunnion bearing device simple compensation.

In the technical solution of the utility model 12, the fact that be cylinder by means of dead eye achieve simple assembling and Simple design.

It is preferable that trunnion bearing device is used for mobilecrane in the technical solution of the utility model 13, wherein the One trunnion bearing device is arranged between upper bracket and the pedestal of crane arm and/or the second trunnion bearing device is arranged on Between upper bracket and amplitude oil cylinder and/or the 3rd trunnion bearing device is arranged between crane arm and amplitude oil cylinder.

It is preferable that at least one bearing block described is soldered to described top props up in the technical solution of the utility model 14 Frame or described crane arm.

The welding of described bearing block is associated with welding deformation, and therefore, the bearing saddle bore of opposite bearing block is not each other by Correctly align.Instead of and in addition the generally complicated and expensive bearing saddle bore of bearing block is carried out on massive crane arm After process, in order to overcome alignment error, make described bearing holder (housing, cover) corresponding rotation and then the directional at-tachment with alignment on bearing block.Axle Bearing is processed before welding, and does not need to process other cylindrical shaft bearing hole.

In a word, therefore preventing stick-slip effect, being trembleed by no longer there is crane arm in this amplitude changing process.So as to more smart Really move and position this crane arm.

According to this utility model, by having the assembling side of the trunnion bearing device of pivot pin and at least one bearing block Method, wherein receiving the bearing holder (housing, cover) with dead eye, and install pivot pin makes it slip into dead eye, spherical outer by means of having The bearing holder (housing, cover) on surface is inserted into reverse spherical inside surface and makes the fact that this bearing holder (housing, cover) orients it is achieved that improved trunnion bearing Device.

Advantageously provide for after orientation has occurred and that, described bearing holder (housing, cover) being fixed in described bearing block.

Preferably by bonding, described bearing holder (housing, cover) is fixed in described bearing block.

Brief description

Fig. 1 is the overall schematic of the upper bracket with crane arm mounted thereto；

Fig. 2 is the sectional view of the trunnion bearing device of Fig. 1 crane arm；And,

Fig. 3 is the detailed view in a kind of alternative design of Fig. 2 from the bearing block region of trunnion bearing device.

Reference numbers list

1 upper bracket

1a yoke formula framework

2 are rotatably connected

3 lower tray

4a the first trunnion bearing device

4b the second trunnion bearing device

4c the 3rd trunnion bearing device

5 crane arms

5a pedestal

6 amplitude oil cylinder

7 grillages

8 plate holes

9 bearing blocks

9a bearing saddle bore

9b inner surface

10 bearing holder (housing, cover)s

10a outer surface

10b dead eye

11 pivot pins

12 middle rings

12a inner surface

12b outer surface

The longitudinal direction of L crane arm 5

The longitudinal direction of l pivot pin 11

Specific embodiment

Fig. 1 shows the overall schematic of the upper bracket 1 of mobilecrane (not shown).Described upper bracket 1 leads to Often it is installed in lower tray 3, so that it can be via (the rotary connection) 2 that be rotatably connected around vertical axes pivot Turn.For the sake of clarity, this lower tray 3 is only used as a section of frame part and illustrates.Telescopic boom 5 is via One trunnion bearing device 4a is installed in upper bracket 1, and described telescopic boom 5 has middle longitudinal direction side at its pedestal 5a To L, enabling hold up this telescopic boom 5 via amplitude oil cylinder 6.Generally, this amplitude oil cylinder 6 is via the second trunnion bearing Device 4b is installed on described upper bracket 1, and is installed in described crane arm 5 via the 3rd trunnion bearing device 4c On.

Fig. 2 shows the rear portion sectional view of the first trunnion bearing device 4a of crane arm 5.The plate of the pedestal 5a of crane arm 5 Frame 7, substantially only some is illustrated, and this grillage 7 extends through the whole width of crane arm 5, and defines at center Extend through the plate hole 8 of crane arm 5 width.This plate hole 8 is with the longitudinal direction L extension at a right angle with crane arm 5.Described grillage 7 In its horizontal and relative end, including multiple otch (cut-outs) 7a, one of two of which bearing block 9 is inserted into respectively to be cut In mouthful 7a, then and be soldered to grillage 7 and the pedestal 5a of adjacent crane arm 5.Bearing block is understood to mean structural detail, Rely on this structural detail that the pivot pin 11 of rotation can be installed, and adjust the power of axially and transversely (transverse) thus inciting somebody to action Pivot pin 11 is held in position in and only allows it to rotate.Described bearing block 9 generally defines dead eye 9a, wherein said axle Bearing bore 9a be not usually in the case of cylinder, but got out slightly reversely spherical or concave inside surface 9b.In this situation Under, " spherical " is understood the slight interior bending referring to inner surface 9b.This bending has large radius arc shape.This understanding It is also applied for spherical outside sweep accordingly.The extension of plate hole 8 orients to the bearing saddle bore 9a of described bearing block 9 respectively. In order to receive pivot pin 11, the bearing saddle bore 9a of opposite bearing block 9 should preferably be in alignment with each other.Because pivot pin 11 is mounted In two bearing blocks 9, between the inner surface of the outer surface of pivot pin 11 and plate hole 8, there is gap.

During manufacturing crane arm 5, described bearing block 9 is welded in grillage 7.There is naturally a certain degree of welding Deformation leads to the alignment error between two bearing saddle bore 9a.Due to the otch 7a being used for bearing block 9 being arranged on crane arm 5 Upper area in, and be therefore disposed on the more stable lower area of crane arm 5, by described in welding deformation Bearing block 9 produces change as follows, when (right on the longitudinal direction L of crane arm 5 and on the pedestal 5a of crane arm 5 Should be in the view of Fig. 2) when observing from below, in grillage 7, described bearing block 9 tilts and its bearing with its outer end slight inward Bore 9a is improperly alignd each other.Welding deformation therefore to be corrected substantially only occurs in the same of two bearing blocks 9 In plane.When observing on the longitudinal direction L of crane arm 5, after welding, bearing block 9 relative to each other keeps orienting or that This moves in parallel, from the vertical orientation of the longitudinal direction L of the crane arm 5 without the axle occurring with respect to bearing saddle bore 9a.Change Sentence is talked about, and in the case of horizontal boom 5, welding deformation is occurred on the upside direction of such as crane arm 5 in pointedly mode In the plane observed.According to this utility model this can by trunnion bearing device effective compensation, and crane arm 5 keep with upper Portion's pallet centerline is parallel.About the 1 of the original position that this occurent welding deformation was directed before with respect to welding To in the range of 2 degree.

Then the bearing holder (housing, cover) 10 with spherical or concave outer surface 10a is inserted the bearing saddle bore 9a that these generally do not line up In.This bearing holder (housing, cover) 10 is slotted or is separated for inserting reverse spherical inside surface 9b of described bearing block 9.Therefore bearing holder (housing, cover) 10 has There is the bearing surface of interruption.Because pivot pin 11 does not rotate in bearing holder (housing, cover) 10, and only stand in the range of less than 90 degree The interruptive area of described bearing surface can simply be oriented in unsupported region by small-angle movement.Except described appearance Outside the 10a of face, described bearing holder (housing, cover) 10 has central cylindrical dead eye 10b, and wherein said pivot pin 11 is in this dead eye 10b Slide.

Because the inner surface 9b of the outer surface 10a and bearing saddle bore 9a of bearing holder (housing, cover) 10 is spherical and reversely spherical respectively, and And simultaneously complimentary to one another, that is, in other words, they are all rotated by making two bearing holder (housing, cover)s 10 in opposite bearing block 9, One keeps flat against another, is in alignment with each other such that it is able to realize described outer surface 10a and described inner surface 9b.This complementary characteristic By circular arc radius identical with the spherical characteristic of outer surface 10a and inner surface 9b the fact realize.Thus described appearance (form-fi tting) contacts face 10a in form-fit fashion with described inner surface 9b, even if will be described in order to assemble purpose Bearing holder (housing, cover) 10 separately or is slotted, then so that the device of this form fit is partly interrupted.After orientation, described bearing holder (housing, cover) 10 is solid It is scheduled in dead eye 9a.This can be realized by for example bonding bearing holder (housing, cover) 10 in bearing saddle bore 9a.Regulation can only be by institute After stating bearing holder (housing, cover) 10 orientation, binding agent is just hardening.Can also via by axially, radially or in the way of tilting with bearing holder (housing, cover) 10 Multiple pins, multiple wedge, multiple bolt, multiple screw, multiple disk or multiple plate that outer surface 10a engages, mechanically by institute State bearing holder (housing, cover) 10 to be fixed in bearing saddle bore 9a.Fixation can also be produced via connecting in form-fit fashion or by clamping Raw.Sufficiently fixation can also be produced simply by increasing outer surface 10a frictional force and then by friction lock.Fixing true Protect first sliding motion necessary to the described crane arm 5 of pivot being occurred between pivot pin 11 and two bearing holder (housing, cover)s 10 In trunnion bearing device 4a.

Described bearing holder (housing, cover) 10 is formed with the synthetic material set of sliding layer, also referred to as high performance sliding bearing.Should Synthetic material is fibre reinforced materials, preferably has the synthetic resin of glass fibre and/or carbon fiber.

Slip into the pivot pin 11 of described bearing holder (housing, cover) from bearing block 9 and therefore prominent on both sides from grillage 7.This pivot pin 11 jag is arranged in the yoke type framework 1a of upper bracket 1 with rotation-fixed manner respectively.

Fig. 3 is the detailed view in a kind of alternative design of Fig. 2 from the bearing block region of trunnion bearing device, wherein Described bearing holder (housing, cover) 10 is not directly inserted in the bearing saddle bore 9a of bearing block 9, and is inserted into being arranged on the middle ring of this position In 12.This middle ring 12 includes cylindrical outer surface 12a and reverse spherical inside surface 12b.Therefore, described bearing block 9 passes through to incite somebody to action Described middle ring 12 is inserted into cylindrical bearing hole 9a and is mounted.This middle ring 12 can be pressed into or bond into described cylinder Bearing hole 9a.Alternative suggestion for the fixed form being related to Fig. 2 being previously mentioned is also feasible.Therefore, described anti- Produce not on described bearing block 9 but on described middle ring 12 to spherical inside surface 12b.After inserting this middle ring 12, The design of bearing block 9 is corresponding to the design being related to described by Fig. 2.Therefore, the description to design Fig. 2 carries out reference.This embodiment In, can alternatively described middle ring 12 separately or be slotted.In this case, described bearing holder (housing, cover) 10 be formed whole Body.

Although more than this utility model the trunnion bearing device by mobilecrane and at crane arm pedestal enters Go description, but can also be using this trunnion bearing device in the other assemblies of mobilecrane.Thus with corresponding Mode, make the plurality of pivot pin, multiple grillage and multiple yoke type framework be adapted.

So in the case of mobilecrane, for example amplitude oil cylinder installed by crane arm then becomes problem.Using In the case of amplitude oil cylinder 6, due to the multiple securing plate relative narrower in this amplitude oil cylinder 6 compared with crane arm 5, therefore or Person's only one of which bearing block 9 is used for each trunnion bearing device 4b, 4c, or as described above, and two bearing blocks 9 are respectively used to Trunnion bearing device 4b, 4c, this depends on the overall dimension of this amplitude oil cylinder 6.According to trunnion bearing device of the present utility model 4b, 4c, then make the pivot pin of amplitude oil cylinder 6 orient parallel to the pivot pin 11 of crane arm 5.

If employing the trunnion bearing device being suitable to crane arm, rocking bar, arm (arms), pillar or the like thereon, its Range of pivot is not circumference but is limited in small angle range, then it is also possible to should in addition to mobilecrane Trunnion bearing device is using in other cranes, excavator, other structures machinery and agricultural machinery device.

Claims

1. there is pivot pin (11) and the trunnion bearing device of at least one bearing block (9) has tool it is characterised in that wherein receiving There is the bearing holder (housing, cover) (10) of dead eye (10b), and described pivot pin (11) is so that it is in the middle side slided of described dead eye (10b) Formula is installed, and described bearing holder (housing, cover) (10) is made up of synthetic material, especially has sliding layer.

2. trunnion bearing device as claimed in claim 1 is it is characterised in that described bearing holder (housing, cover) (10) has spherical outer surface (10a), wherein said spherical outer surface (10a) inserts reverse spherical inside surface (9b, 12a) to orient described bearing holder (housing, cover) (10).

3. trunnion bearing device as claimed in claim 2 is it is characterised in that described bearing holder (housing, cover) (10) is after orientation has occurred and that It is fixed in described bearing block (9).

4. trunnion bearing device as claimed in claim 2 or claim 3 is it is characterised in that described bearing block (9) is welded in grillage (7).

5. trunnion bearing device as claimed in claim 2 or claim 3 is it is characterised in that described reverse spherical inside surface (9b) is in axle Formed in bearing hole (9a).

6. trunnion bearing device as claimed in claim 5 it is characterised in that described bearing holder (housing, cover) (10) be bonded directly to described In bearing block (9).

7. trunnion bearing device as claimed in claim 2 is it is characterised in that described reverse spherical inside surface (12a) is being inserted Enter in the middle ring (12) in bearing saddle bore (9a) and formed.

8. trunnion bearing device as claimed in claim 7 is it is characterised in that described bearing holder (housing, cover) (10) is bonded to described centre In ring (12).

9. trunnion bearing device as claimed in claim 7 or 8 it is characterised in that described middle ring (12) directly bonded or It is pressed in described bearing saddle bore (9a).

10. trunnion bearing device as claimed in claim 1 it is characterised in that two bearing blocks (9) be spaced separately and Same pivot pin (11) is installed.

11. trunnion bearing devices as claimed in claim 10 are it is characterised in that described two bearing holder (housing, cover) (10) is orienting It is fixed in after generation in described bearing block (9), so that when from the upper observation of longitudinal direction (l) of pivot pin (11), institute The dead eye (10b) stating bearing holder (housing, cover) (10) is in alignment with each other.

12. trunnion bearing devices as claimed in claim 1 are it is characterised in that described dead eye (10b) is cylindrical.

13. mobilecranes with trunnion bearing device as claimed in claim 1 are it is characterised in that the first pivot shaft Bearing apparatus (4a) are arranged between upper bracket (1) and the pedestal (5a) of crane arm (5) and/or the second trunnion bearing device (4b) it is arranged between upper bracket (1) and amplitude oil cylinder (6) and/or the 3rd trunnion bearing device (4c) is arranged on lifting Between arm (5) and amplitude oil cylinder (6).

14. mobilecranes as claimed in claim 13 are it is characterised in that at least one bearing block (9) is welded in institute State upper bracket (1) or described crane arm (5).