CN208992041U - Excavator pivoting support mounting base group welds universal fixture - Google Patents
Excavator pivoting support mounting base group welds universal fixture Download PDFInfo
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- CN208992041U CN208992041U CN201821427776.1U CN201821427776U CN208992041U CN 208992041 U CN208992041 U CN 208992041U CN 201821427776 U CN201821427776 U CN 201821427776U CN 208992041 U CN208992041 U CN 208992041U
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Abstract
A kind of excavator pivoting support mounting base group weldering universal fixture, it includes workbench, pushing component, and at least three groups positioning components around pushing component setting, each positioning component includes positioning seat and the strutting assembly for being parallel to workbench setting, pushing component includes pushing guide cylinder, impeller-hub and pushing block, pushing guide cylinder is the cylinder for standing on workbench installation, and pushing block has circular conical surface and it is located in promotion guide cylinder, and impeller-hub one end is connected with the pushing block；Strutting assembly includes strutting axis, spring and locating piece, axis is strutted by supporting seat frame on workbench, it struts axle sleeve and sets a stop collar, strut the circular conical surface that axis one end is butted on the pushing block, the axis other end is strutted equipped with the locating piece, spring, which is placed on, struts axis and between support base and stop collar；Each positioning seat is loaded on workbench and is located under the locating piece.Technological datum is overlapped by the utility model using above structure with design basis, eliminates the error generated by benchmark conversion.
Description
Technical field
The utility model relates to excavator pivoting support mounting base positioning process fields, more particularly, to a kind of technological datum
It is overlapped with design basis, the excavator pivoting support mounting base group for eliminating the error generated by benchmark conversion welds universal fixture.
Background technique
Existing pivoting support installation holder structure is divided into welded type and two kinds of monoblock type, and middle-size and small-size excavator is generally using life
Produce at low cost, high production efficiency welded structure.As shown in Figure 1 to Figure 2, the pivoting support mounting base A master of welded structure
It to be made of seat ring A1 and edge rolling plate A2, top is the seat ring A1 of forging, and lower part is the edge rolling plate A2 that steel plate edge rolling is welded into, seat
Circle A1 is both needed to weld with the inside and outside circle at the place of docking edge rolling plate A2, to carry out overall processing again with lower vehicle frame completion group postwelding.Weld seam
It is that pivoting support mounting base is most weak, most critical position, must assure that weldquality when manufacturing, if seat ring A1 and edge rolling
Plate A2 coaxiality error is larger, and it is uneven surrounding weld seam occur, discontinuity, easily causes under the effect of chronic fatigue load
Weld cracking phenomenon, and then lower vehicle frame structural member is caused integrally to be scrapped.Meanwhile pivoting support is fixed by bolts in pivoting support
It in mounting base, and is connect with getting on the bus, if seat ring A1 and edge rolling plate A2 concentricity are poor, leads to deviation of gravity center design position of getting on or off the bus,
Easily occurs the problems such as shaking extremely caused by because of assembled machine balance in excacation, and problems are difficult to find out reason.
Therefore, must guarantee that pivoting support mounting base group welds precision when manufacturing, prevent serial accumulated error and
Influence product quality.
Summary of the invention
The utility model solves the problems, such as it is how to design one kind to guarantee the weldering precision group weldering of pivoting support mounting base group
Universal fixture.
To solve the above problems, the utility model provides a kind of skill of excavator pivoting support mounting base group weldering universal fixture
Art scheme comprising workbench, pushing component, and at least three groups positioning components around pushing component setting, each positioning group
Part includes positioning seat and the strutting assembly for being parallel to workbench setting, in which:
Pushing component comprising push guide cylinder, impeller-hub and pushing block, pushing guide cylinder is to stand on workbench installation
Cylinder, pushing block be the block with circular conical surface and its be located at push guide cylinder in, impeller-hub one end and the pushing block phase
Even；
Strutting assembly comprising axis, spring and locating piece are strutted, struts axis through supporting seat frame on workbench,
It struts axle sleeve and sets a stop collar, strut the circular conical surface that axis one end is butted on the pushing block, strut the axis other end equipped with the positioning
Block, spring, which is placed on, struts axis and between support base and stop collar；
Each positioning seat is loaded on workbench and is located under locating piece described in corresponding strutting assembly.
Further preferred that the promotion guide cylinder, impeller-hub and pushing block coaxial arrangement.
Further preferred that the impeller-hub is screw rod, which is integrally connected with the pushing block, impeller-hub
The other end stretches out the promotion guide cylinder and is connected with a crank.
Further preferred that the pushing block include overlapping distribution upper conus portion and lower cylindrical portion, upper conus portion and under
Cylindrical portion is coaxially disposed and is integrally connected.
Further preferred that the positioning component is four groups, positioning component described in four groups is to push guide cylinder center for circle
The heart, and it is equal angular radially arranged.
Further preferred that strutting axis one end described in each strutting assembly is promote-side, the end face of the promote-side is and pushes away
The compatible inclined-plane of the circular conical surface of motion block.
Further preferred that the axis tool that struts is there are two side grain, which struts the center line pair of axis
Claim arrangement, the support base top offers relief hole, which is formed by the U-shaped through-hole that two open ends are docked, support
Axis is opened across the relief hole.
Further preferred that the stop collar is the bulge loop piece being sheathed on strut on axis and its close promotion guide cylinder is set
It sets.
Further preferred that respectively positioning strutting assembly described in locating piece be one I-shaped piece, the locating piece one end with it is right
Axial end should be strutted to be connected, the locating piece other end has the edge rolling plate positioning convex platform and seat ring positioning convex platform for going to upper and lower distribution, and
The end face of edge rolling plate positioning convex platform and seat ring positioning convex platform is circle compatible with excavator pivoting support mounting base inner sidewall
Cambered surface.
Further preferred that positioning seat described in each pushing component is I-shaped piece, more positioning seats in multiple pushing components
Cooperatively form the support platform of carrying excavator pivoting support mounting base.
Compared with prior art, the utility model has the advantages that as follows:
1, group weldering quality is high, and pivoting support mounting base failure rate is greatly reduced: the utility model is fixed using symmetrical bracing type simultaneously
Position fastening, using the center line of seat ring and edge rolling plate as technological datum, realize technological datum be overlapped with design basis, elimination because
The error that benchmark conversion generates, can accurately guarantee the concentricity of seat ring Yu edge rolling plate, so that the butt weld of seat ring and edge rolling plate
Surrounding is uniform, effectively solves the problems, such as pivoting support mounting base because group weldering when unevenly caused by weld cracking, avoid therefore and lead
The lower vehicle frame structural member caused is integrally scrapped, while guaranteeing balance when complete machine work, eliminates strange shake；
2, production efficiency improves 90%, reduces manufacturing cost；The tooling that the utility model illustrates is easy to operate, positions reliable clamping,
Secondary friendship inspection rate reaches 100%, does not occur repair conditions, greatly reduces and reprocesses cost and scrap cost, production procedure is more suitable
Freely；
3, it realizes generalization, saves tooling input cost and occupied area.The locating piece of adaptation different type of machines need to be only made,
It is applicable to the group weldering of complete series type welded type pivoting support mounting base, reduces expense and the land occupation face of technological equipment investment
Product；
4, this technology tooling is easy to operate, and pivoting support mounting base group welds quality height, and high production efficiency is particularly suitable for large quantities of
In amount production.
Detailed description of the invention
Fig. 1 is excavator pivoting support mounting base structural upright schematic diagram；
Fig. 2 is excavator pivoting support mounting base structural profile illustration；
Fig. 3 is the utility model embodiment structural upright schematic diagram；
Fig. 4 is Fig. 3 partial structurtes broken isometric schematic diagram；
Fig. 5 is the utility model embodiment structural profile illustration；
Fig. 6 is impeller-hub described in the utility model embodiment and pushing block assembling structure schematic diagram；
Fig. 7 is that axis and locating piece assembling structure schematic diagram are strutted described in the utility model embodiment；
Fig. 8 is the stress separation figure of structure in Fig. 7；
The structural schematic diagram of Fig. 9 the utility model embodiment structure positioning clamping excavator pivoting support mounting base；
Figure 10 is the part section stereoscopic schematic diagram of Fig. 9 structure；
Figure 11 is Fig. 9 structural profile illustration；
Figure 12 is the structure top view that the utility model embodiment structure positioning clamps excavator pivoting support mounting base.
Specific embodiment
The seat ring of pivoting support mounting base and the weld seam at the edge rolling plate place of docking are that pivoting support mounting base is most weak, most critical
Position must assure that weldquality when manufacturing, if seat ring and edge rolling plate coaxiality error are larger, surrounding weld seam occurs not
Uniformly, discontinuity easily leads to weld cracking phenomenon under the effect of chronic fatigue load, and then leads to lower vehicle frame structural member
Entirety is scrapped.Meanwhile pivoting support is fixed by bolts in pivoting support mounting base, and is connect with getting on the bus, if seat ring and volume
Plectane concentricity is poor, leads to deviation of gravity center design position of getting on or off the bus, caused by easily occurring because of assembled machine balance in excacation
The problems such as abnormal shake, and problems are difficult to find out reason.
In view of the above technical problems, by the analysis to reason, constantly research finds a kind of excavator revolution branch to inventor
Hold mounting base group weldering universal fixture technical solution comprising workbench, pushing component, and at least three groups surround pushing component
The positioning component of setting, each positioning component include positioning seat and the strutting assembly for being parallel to workbench setting, in which: promotion group
Part includes pushing guide cylinder, impeller-hub and pushing block, and pushing guide cylinder is the cylinder for standing on workbench installation, and pushing block is tool
There is the block of circular conical surface and it is located in promotion guide cylinder, impeller-hub one end is connected with the pushing block；Strutting assembly includes support
Axis, spring and locating piece are opened, axis is strutted and passes through supporting seat frame on workbench, strut axle sleeve and set a stop collar, strut axis
One end is butted on the circular conical surface of the pushing block, struts the axis other end equipped with the locating piece, and spring, which is placed on, to be strutted axis and be located at branch
It supports between seat and stop collar；Each positioning seat is loaded on workbench and is located under locating piece described in corresponding strutting assembly.
In the above-mentioned technical solutions, seat ring and at least three small arc surfaces of volume raw sheet inside are anchor point, and formation one steady
Determine positioning surface, then by circular conical surface, impeller-hub, spring, strut the mechanisms such as axis and locating piece while strutting and positioned and clamped,
The center line for the circle that at least three arc surfaces are constituted is technological datum, realizes that technological datum is overlapped with design basis, eliminates because of base
The error that quasi- conversion generates；In addition, be symmetrically to strut simultaneously by seat ring and edge rolling plate, it can accurately guarantee the coaxial of seat ring and edge rolling plate
Degree effectively solves pivoting support mounting base because unevenly causing when group welding so that the butt weld of pivoting support mounting base is uniform
Weld cracking problem, lower vehicle frame structural member is integrally scrapped caused by avoiding therefore, while guaranteeing balance when complete machine work,
Eliminate strange shake.
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.
Embodiment:
It is welded type and two kinds of monoblock type that excavator pivoting support mounting base A, which is divided to, and middle-size and small-size excavator is generally using production
At low cost, high production efficiency welded structure.The excavator pivoting support mounting base A is integral rounded ring body, weldering
The pivoting support mounting base A for connecing formula structure is made of seat ring A1 and edge rolling plate A2, the pivoting support mounting base A's of welded structure
Top is the seat ring A1 of forging, and the lower part of the pivoting support mounting base A of welded structure is the edge rolling plate that steel plate edge rolling is welded into
A2, seat ring A1 are both needed to weld with the inside and outside circle at the place of docking edge rolling plate A2, to carry out whole add again with lower vehicle frame completion group postwelding
Work, excavator pivoting support mounting base A group weldering universal fixture set forth below can have excavator pivoting support mounting base
Effect is accurately positioned.
A kind of technical solution of excavator pivoting support mounting base group weldering universal fixture comprising workbench 1, promotion group
Part 2, and at least three groups positioning components being arranged around pushing component 2, each positioning component includes positioning seat 3 and to be parallel to work flat
The strutting assembly 4 of platform setting.
Specifically: in practical operation, excavator pivoting support mounting base four anchor points of circumference cross contrast locating three
Point location is easier to reduction group weldering match-place error, the concentricity requirement of edge rolling plate and seat ring is effectively ensured, only preferably: described fixed
Hyte part is four groups, and using positioning component described in four groups in the present embodiment, positioning component described in four groups is equal angular along digging
Pick machine pivoting support mounting base is radially arranged, and the mechanism that symmetrical bracing type positioning clamps, the vertical installation of each pushing component 2 are formed
In workbench 1 and its center setting for corresponding to excavator pivoting support mounting base.
Pushing component 2 includes promotion guide cylinder 21, impeller-hub 22 and the pushing block 23 of coaxial arrangement, in which: pushes guiding
Cylinder 21 is the cylinder for standing on the installation of workbench 1, which offers a spiral shell far from the roof center of workbench 1
Pit；The pushing block 23 is the block with circular conical surface and it is in promotion guide cylinder 21；Impeller-hub 22 is a screw rod, should
Impeller-hub one end is connected with pushing block, 22 other end of impeller-hub pass through threaded hole stretch out in push guide cylinder 21 and with a crank phase
Even, in turn, crank 5 is manually forced in, successively to drive impeller-hub 21 and pushing block 22 past above and below promotion 21 inner wall of guide cylinder
Complex displacement.
Specifically: the promotion guide cylinder 21 includes the tube 211 perpendicular to workbench and is buckled in tube
The buckle closure 212 of top surface, the threaded hole are opened at the center of buckle closure 212；The pushing block 23 includes the upper circle of overlapping distribution
Tapering 231 and lower cylindrical portion 232, upper conus portion 231 and lower cylindrical portion 232 are coaxially disposed and are integrally connected, the impeller-hub 22
One end and the diameter smallest end of conus portion 231 on pushing block 23 are integrally connected, and the outer surface of the upper conus portion 231 is above-mentioned
Circular conical surface, the outer surface of lower cylindrical portion 232 are cylindrical surface；232 outer surface of lower cylindrical portion can with push guide cylinder 21 in
Wall cooperation can play guiding role to the pushing block of upper and lower displacement, to further increase pushing block in pushing displacement process
Stability further promotes whole equipment stability.
Strutting assembly 4 is consistent with the quantity of positioning seat 3, and in the present embodiment, strutting assembly 4 and positioning seat 3 are four,
Wherein, each strutting assembly 4 includes sliding axle 41, spring 42 and locating piece 43, and the sliding axle 41 passes through 44 parallel shelf of support base
On workbench 1 and one end is resisted against on the circular conical surface of pushing block 23, and 41 other end of sliding axle is connected with locating piece 43,
The positioning seat 3 of corresponding position is loaded on workbench 1 and is located at aforementioned 43 lower section of locating piece；Four positioning seats 43 cooperatively form
The support construction of excavator pivoting support mounting base can be carried.
Specifically: support base 44 is a support chip stood on workbench 1, which offers a resigning
Hole, the relief hole are formed by the open end docking of two U-shaped through-holes, and the axis 41 that struts includes circular shaft section 411 and upper and lower end
Face is the limit section 412 of side grain, and wherein for circular shaft section 411 close to pushing guide cylinder 21 to be arranged, the axis 41 that struts limits section 412
It is placed at relief hole to set up and strut axis, forms the structure that limitation struts axis freedom degree rotatable around its axis；It is described to strut axis
42 corresponding 422 one end promote-side B of circular shaft section, the end face of promote-side B is inclined surface compatible with aforementioned circular conical surface, this is strutted
The inclined surface of axis 41 is butted on the circular conical surface of pushing block 23, struts axis 41 along its axial position by 23 upper and lower displacement of pushing block drive
It moves；The limit section 412 for strutting axis 41 is arranged a stop collar 45, which is annulus and its outer diameter is greater than spring 42 directly
Diameter, stop collar 45 are arranged close to circular shaft section 411；The spring 42 is between support base 44 and stop collar 45；Each locating piece 43
For I-shaped block, the interior insertion of the groove of one side struts the end that axis 41 limits section, and utilizes screw or bolt by locating piece
43 are locked at the end for strutting axis 41, and 43 other end of locating piece has two boss for going to upper and lower distribution, two boss difference
For edge rolling plate positioning convex platform 431 and seat ring positioning convex platform 432, and the end face of two boss is arc surface, edge rolling plate convex
The radian of the arcwall face of platform 431 and seat ring positioning convex platform 432 is consistent with the radian of the corresponding position excavator pivoting support mounting base A.
It is to be noted that impeller-hub 22 drives the most significant end being moved near 21 top surface of guide cylinder is pushed by crank 5
The external cylindrical surface of the lower cylindrical portion 232 of pushing block 23, which is no more than, when place struts height of the axis 41 away from workbench 1, prevents from strutting axis
41 pass through the bottom of conical blocks 231 on impeller-hub 22；When impeller-hub 22 is moved to lowermost end catch bar axis 22 not with strut axis 41
The interference of the promote-side inclined-plane B, i.e., the circular conical surface of conus portion 231 or the cylindrical surface of lower cylindrical portion 232 are all begun on entire motion process
Contact of incline plane that is whole and strutting 41 promote-side B of axis.
In above scheme, specific operation process and principle are as follows:
The positioning of excavator pivoting support mounting base clamps: excavator pivoting support mounting base A is described fixed loaded on four
On the support construction that position seat 3 is formed, rotation crank 5 to drive catch bar 22 along push 21 direction of guide cylinder inner wall to upper
It moves, so that the promote-side end face B for respectively strutting axis 41 in positioning component described in four groups is gradually increased the circle of pushing block 23 by internal diameter
The conical surface pushes, and towards strutting the axially outward movement of axis 41 described in four, while respectively strutting the spring 42 on axis 41 and being compressed to store
Can, so that the edge rolling plate positioning convex platform 431 and seat ring positioning convex platform 42 of locating piece 43 are butted on the installation of excavator pivoting support respectively
On the edge rolling plate A2 of seat A, the inner sidewall of seat ring A1, and then realize the precise positioning to excavator pivoting support mounting base A；This
When, strut thrust F, the pressure T of spring, frictional force of the axis 41 during positioning clamping by the circular conical surface of the pushing block 23
F, support base counter-force Fr, edge rolling plate A2 clamp counter-force F1 and seat ring A1 and clamp counter-force F2, and wherein thrust F can level of conversion component Fa
With vertical stress component Fb, carried out in transmission process using impeller-hub 22, horizontal component Fa is far longer than the pressure T and frictional force of spring
F summation guarantees reliable clamping；For vertical direction because support base is fixed, the resultant force of vertical stress component Fb and 44 counter-force Fr of support base are zero；
The release of excavator pivoting support mounting base A: it because above-mentioned thrust F is transient force, struts axis 41 and is only restored at this time
Spring 42 pressure T and frictional force f, because clamp and release process in frictional force it is smaller, strut axis 41 in release process
It is middle because of impeller-hub 22(screw rod) and pushing block 23 move down, it is axial towards pushing away along it that axis 41 is respectively strutted in four positioning components
Dynamic component direction movement, i.e., respectively strut axis 41 and move inward, and realizes automatic release, without manual power-assisted.
Excavator pivoting support mounting base is strutted outward simultaneously by four symmetric points of circle, forces edge rolling plate A2 and seat ring A1
Center line it is coaxial, realize center line position and is clamped simultaneously, because edge rolling plate A2 has foozle, four anchor points of circumference
Three point locations of contrast locating of crossing be easier to reduction group weldering match-place error, the concentricity requirement of edge rolling plate and seat ring is effectively ensured；When
Excavator pivoting support mounting base locating clip is next, is fixed in edge rolling plate with the weldering of the seat ring place of docking section, rotation crank drives
Impeller-hub 22, pushing block 23 move down, and strut axis 41 and locating piece 43 because of the inside Slideslip of 42 pressure of spring, unclamp counter race
The clamping of A1 and edge rolling plate A2, slinging pivoting support mounting base to designated position at this time can be completed a group weldering operation.For difference
The weldering of type pivoting support mounting base group, is assembled to sliding axle outer end blending bolt for locating piece and fixes, and it is logical that multi-model can be realized
Purpose saves tooling manufacturing cost and occupied area.
Although the utility model is disclosed as above with preferred embodiment, its be not for limiting the utility model, it is any
Those skilled in the art without departing from the spirit and scope of the utility model, can make possible variation and modification, because
This protection scope of the utility model should be subject to the range that the utility model claims are defined.
Claims (10)
1. excavator pivoting support mounting base group welds universal fixture, it is characterised in that: it includes workbench, pushing component, and
At least three groups positioning components around pushing component setting, each positioning component include positioning seat and are parallel to what workbench was arranged
Strutting assembly, in which:
Pushing component comprising push guide cylinder, impeller-hub and pushing block, pushing guide cylinder is the circle for standing on workbench installation
Cylinder, pushing block is the block with circular conical surface and it is positioned at pushing in guide cylinder, and impeller-hub one end is connected with the pushing block；
Strutting assembly comprising strut axis, spring and locating piece, strut axis and pass through supporting seat frame on workbench, strut
Axle sleeve sets a stop collar, struts the circular conical surface that axis one end is butted on the pushing block, struts the axis other end equipped with the locating piece, bullet
Spring, which is placed on, struts axis and between support base and stop collar；
Each positioning seat is loaded on workbench and is located under locating piece described in corresponding strutting assembly.
2. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: the promotion
Guide cylinder, impeller-hub and pushing block coaxial arrangement.
3. excavator pivoting support mounting base group according to claim 1 or 2 welds universal fixture, it is characterised in that: described
Impeller-hub is screw rod, which is integrally connected with the pushing block, and the impeller-hub other end stretches out the promotion guide cylinder
And it is connected with a crank.
4. excavator pivoting support mounting base group according to claim 1 or 2 welds universal fixture, it is characterised in that: described
Pushing block includes that the upper conus portion of overlapping distribution and lower cylindrical portion, upper conus portion and lower cylindrical portion are coaxially disposed and are integrally connected.
5. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: the positioning
Component is four groups, and positioning component described in four groups is and equal angular radially arranged to push guide cylinder center as the center of circle.
6. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: respectively strut group
It is promote-side that axis one end is strutted described in part, and the end face of the promote-side is inclined-plane compatible with the circular conical surface of pushing block.
7. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: described to strut
Axis tool is there are two side grain, and along the center line symmetry arrangement for strutting axis, the support base top offers to be allowed two side grains
Position hole, the relief hole are formed by the U-shaped through-hole that two open ends are docked, and strut axis across the relief hole.
8. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: the limit
Ring is the bulge loop piece being sheathed on strut on axis and its close promotion guide cylinder setting.
9. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: each locating support
Opening locating piece described in component is one I-shaped piece, which is connected with the corresponding axial end that struts, the locating piece other end
With the edge rolling plate positioning convex platform and seat ring positioning convex platform for going to upper and lower distribution, and edge rolling plate positioning convex platform and seat ring positioning convex platform
End face be arc surface compatible with excavator pivoting support mounting base inner sidewall.
10. excavator pivoting support mounting base group according to claim 1 welds universal fixture, it is characterised in that: each to push
Positioning seat described in component is I-shaped piece, and more positioning seats cooperatively form carrying excavator pivoting support peace in multiple pushing components
Fill the support platform of seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821427776.1U CN208992041U (en) | 2018-09-03 | 2018-09-03 | Excavator pivoting support mounting base group welds universal fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821427776.1U CN208992041U (en) | 2018-09-03 | 2018-09-03 | Excavator pivoting support mounting base group welds universal fixture |
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| Publication Number | Publication Date |
|---|---|
| CN208992041U true CN208992041U (en) | 2019-06-18 |
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ID=66799124
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|---|---|---|---|
| CN201821427776.1U Active CN208992041U (en) | 2018-09-03 | 2018-09-03 | Excavator pivoting support mounting base group welds universal fixture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536373A (en) * | 2019-09-20 | 2021-03-23 | 苏州汉扬精密电子有限公司 | Internal stay presss from both sides tight structure |
| CN113756390A (en) * | 2021-10-18 | 2021-12-07 | 山东常林机械集团股份有限公司 | Economical excavator slewing bearing mounting seat and manufacturing technology |
-
2018
- 2018-09-03 CN CN201821427776.1U patent/CN208992041U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536373A (en) * | 2019-09-20 | 2021-03-23 | 苏州汉扬精密电子有限公司 | Internal stay presss from both sides tight structure |
| CN113756390A (en) * | 2021-10-18 | 2021-12-07 | 山东常林机械集团股份有限公司 | Economical excavator slewing bearing mounting seat and manufacturing technology |
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