CN213448639U - Lower bottom plate structure for improving connection strength of excavator underframe and push shovel seat - Google Patents
Lower bottom plate structure for improving connection strength of excavator underframe and push shovel seat Download PDFInfo
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- CN213448639U CN213448639U CN202021321280.3U CN202021321280U CN213448639U CN 213448639 U CN213448639 U CN 213448639U CN 202021321280 U CN202021321280 U CN 202021321280U CN 213448639 U CN213448639 U CN 213448639U
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Abstract
The utility model discloses a lower bottom plate structure for improving the connection strength of an excavator underframe and a push shovel seat, which comprises a plate I, a plate II, a plate III, a bent R arc plate IV and a bent R arc plate V; the plate I is arranged on a middle plate of the lower bottom plate, and the lower bottom plate is sequentially welded with an R arc plate IV, a plate II, a plate I, a plate III and a bent R arc plate V from left to right; the supporting plate in front of the lower bottom plate is sequentially divided into a supporting plate left section, a first special-shaped flitch, a first supporting plate middle section, a second special-shaped flitch and a supporting plate right section from left to right; the supporting plate behind the lower bottom plate is sequentially divided into a third special-shaped flitch, a middle section of the second supporting plate and a fourth special-shaped flitch from left to right; the utility model provides an improve excavator chassis and push away shovel seat joint strength's lower plate structure can improve the joint strength of lower plate, further increases the bearing capacity and the bending strength of chassis, prolongs the life of excavator chassis.
Description
Technical Field
The utility model relates to a verifying attachment, especially an improve excavator chassis and push away shovel seat joint strength's lower plate structure.
Background
The structure of the joint of the existing excavator underframe and a push shovel seat is formed by butt welding two bent pieces, and because the excavator is continuously subjected to the action of impact load during bulldozing work, the parts with larger stress are mostly arranged at four corners at two sides of a frame bottom plate, the probability of cracking of the butt joint of the bent pieces of the frame bottom plate is higher, and the requirement on the strength of the frame bottom plate structure is higher; meanwhile, in order to improve the structural strength of the bottom plate of the frame, the thickness of the steel plate adopted by the two bending parts of the bottom plate is thicker, so that the manufacturing cost is increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is not enough to above-mentioned prior art, and provide an improve excavator chassis and push away shovel seat joint strength's lower plate structure, this structure can improve the joint strength of lower plate, further bearing capacity and the bending strength of increase chassis, the life of extension excavator chassis.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a lower bottom plate structure for improving the connection strength of an excavator underframe and a push shovel seat comprises a plate I, a plate II, a plate III, a bent R arc plate IV and a bent R arc plate V; the plate I is arranged on a middle plate of the lower bottom plate, and the lower bottom plate is sequentially welded with an R arc plate IV, a plate II, a plate I, a plate III and a bent R arc plate V from left to right; the lower base plate is axially symmetrical about the plate I, and the bending angle of the bent R arc plate IV and the bent R arc plate V is an obtuse angle; the front surface and the rear surface of the lower bottom plate are respectively welded with a support plate, and a bending height H is arranged between the support plate and the lower bottom plate; the support plate in front of the lower base plate is provided with a first special-shaped opening at the welding joint of the bent R arc plate IV, the support plate in front of the lower base plate is provided with a second special-shaped opening at the bent R arc plate V, the first special-shaped opening and the second special-shaped opening are completely identical, the support plate in front of the lower base plate is sequentially divided into a support plate left section, a first special-shaped opening, a first support plate middle section, a second special-shaped opening and a support plate right section from left to right, and the first special-shaped opening is welded with a first special-shaped flitch plate which is matched with the support plate left section and the first support plate middle section; welding a second special-shaped flitch matched with the right section of the supporting plate and the middle section of the first supporting plate through the second special-shaped notch, wherein the first special-shaped flitch is completely the same as the first special-shaped flitch; a third special-shaped opening is formed in the welding joint of the bent R-arc plate IV of the supporting plate behind the lower base plate, a fourth special-shaped opening is formed in the bent R-arc plate V of the supporting plate behind the lower base plate, the third special-shaped opening and the fourth special-shaped opening are completely identical, the supporting plate behind the lower base plate is sequentially divided into the third special-shaped opening, the middle section of the second supporting plate and the fourth special-shaped opening from left to right, and a third special-shaped pasting plate adaptive to the section of the second middle base plate is welded at the third special-shaped opening; a fourth special-shaped flitch plate which is matched with the second middle bottom plate section is welded at the fourth special-shaped notch; the third irregular flitch and the fourth irregular flitch are completely the same, outward arc openings with the same size are arranged at the lower parts of the third irregular flitch and the fourth irregular flitch, the included angle of the arc openings is an acute angle, and the included angle of the arc openings and the bending angle of the bent R arc plate IV and the bent R arc plate V are complementary angles.
Furthermore, the size of the bending R arc is 8-12 times of the thickness of the used steel plate, the length A of one end of the bending R arc exceeding the R arc is 2-3 times of the thickness of the steel plate, and the length B of the other end of the bending R arc exceeding the R arc is 1-2 times of the thickness of the steel plate; the bending height H is 3 times the thickness of the steel sheet used.
Furthermore, the plate I is provided with an assembling hole.
Further, the length and the height of the front and the rear of the lower bottom plate are all the same.
The utility model discloses following beneficial effect has:
1. the utility model discloses an open special-shaped opening on the lower plate, and at the bending resistance R arc of special-shaped opening department die mould to welding special-shaped flitch is in special-shaped opening department, and this structure can improve the joint strength of lower plate, the bearing capacity and the bending strength of further increase chassis greatly.
2. The bending resistance R arcs of the two pressing shapes with the notches in the front of the bottom plate of the underframe greatly increase the connection strength between the bottom plate and the push shovel seat, and the bending resistance R arcs of the two pressing shapes with the notches in the back of the bottom plate of the underframe greatly increase the stress strength of the back of the bottom plate.
3. The structure reduces the thickness of the bottom plate of the underframe and reduces the cost.
Drawings
Fig. 1 is an assembly schematic diagram of the excavator underframe, the push-shovel seat and the oil cylinder seat of the utility model.
Fig. 2 is a schematic structural view of the lower plate of the present invention.
Fig. 3 is a schematic size view of a bending R arc in example 2.
Among them are: 1. a chassis; 2. pushing the shovel seat leftwards; 3. a cylinder block; 4. pushing the shovel seat to the right; 5. a plate I; 6. a plate II; 7. a plate III; 8. bending the R arc plate IV; 9. bending the R arc plate V; 10. a strut plate left section; 11. a first profiled flitch; 12. a first support plate middle section; 13. a second profiled flitch; 14. a support plate right section; 15. a third deformed pasting board; 16. a second support plate middle section; 17. and a fourth special-shaped flitch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, "first", "second" and the like do not indicate the degree of importance of the component parts, and thus, are not to be construed as limiting the present invention. The specific dimensions used in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
As shown in fig. 1, the base frame 1 is connected with the right blade pushing base 4 by welding, connected with the cylinder base 3 by welding, and connected with the left blade pushing base 2 by welding.
Example 1:
as shown in fig. 2, a lower base plate structure for improving the connection strength of an excavator underframe 1 and a push shovel base, wherein the lower base plate comprises a plate I5, a plate II 6, a plate III 7, a bent R arc plate IV 8 and a bent R arc plate V9; the plate I5 is arranged on a middle plate of the lower bottom plate, and the lower bottom plate is sequentially welded with an R arc plate IV, a plate II 6, a plate I5, a plate III 7 and a bent R arc plate V9 from left to right; the lower base plate is axially symmetrical about the plate I5, and the bending angle of the bent R arc plate IV 8 and the bending angle of the bent R arc plate V9 are obtuse angles; the front surface and the rear surface of the lower bottom plate are respectively welded with a support plate, and a bending height H is arranged between the support plate and the lower bottom plate; the support plate in front of the lower base plate is provided with a first special-shaped opening at the welding joint of the bent R arc plate IV 8, the support plate in front of the lower base plate is provided with a second special-shaped opening at the bent R arc plate V9, the first special-shaped opening and the second special-shaped opening are completely the same, the support plate in front of the lower base plate is sequentially divided into a support plate left section 10, a first special-shaped opening, a first support plate middle section 12, a second special-shaped opening and a support plate right section 14 from left to right, and the first special-shaped opening is welded with a first special-shaped flitch plate 11 which is adaptive to the support plate left section 10 and the first support plate middle section 12; a second special-shaped flitch 13 matched with the right section 14 of the supporting plate and the middle section 12 of the first supporting plate is welded at the second special-shaped notch, and the first special-shaped flitch 11 is completely the same as the first special-shaped flitch 11; a third special-shaped opening is formed in the welding joint of the bent R-arc plate IV 8 of the supporting plate behind the lower base plate, a fourth special-shaped opening is formed in the bent R-arc plate V9 of the supporting plate behind the lower base plate, the third special-shaped opening and the fourth special-shaped opening are completely identical, the supporting plate behind the lower base plate is sequentially divided into the third special-shaped opening, a middle section 16 of the second supporting plate and the fourth special-shaped opening from left to right, and a third special-shaped pasting plate 15 which is adaptive to the section of the second middle base plate is welded at the third special-shaped opening; a fourth special-shaped flitch plate 17 which is matched with the second middle bottom plate section is welded at the fourth special-shaped notch; the third irregular flitch 15 and the fourth irregular flitch 17 are completely the same, outward arc openings with the same size are arranged at the lower parts of the third irregular flitch 15 and the fourth irregular flitch 17, the included angle of the arc openings is an acute angle, and the included angle is a complementary angle with the bending angle of the bending R arc plate IV 8 and the bending R arc plate V9.
The structure of the lower base plate formed by the bending R arc and the plurality of special-shaped flitch plates as shown in figure 2 greatly increases the connection strength of the lower base plate and further increases the bearing capacity and the bending strength of the underframe 1, and in order to achieve the optimal bearing capacity and the bending strength of the underframe 1, the bending angle of the bending R arc plate IV 8 and the bending R arc plate V9 is generally 120-150 degrees.
Example 2:
on the basis of the lower bottom plate structure of the embodiment 1, the specific size proportion of the bending R arcs of the two bending R arc plates is specified, as shown in FIG. 3, the size of the bending R arc is 8-12 times of the thickness of the used steel plate, the length A of one end of the bending R arc exceeding the R arc is 2-3 times of the thickness of the steel plate, and the length B of the other end of the bending R arc exceeding the R arc is 1-2 times of the thickness of the steel plate; the bending height H is 3 times of the thickness of the steel plate; the bending R arc with the length can increase the bending strength of the lower bottom plate, the bending height H can increase the strength of the lower bottom plate to the maximum extent and prevent the lower bottom plate from cracking or breaking, the connection strength of the lower bottom plate and the push shovel seat is improved, and the requirement that the push shovel is repeatedly subjected to impact force is met.
In addition, the first middle bottom plate section is provided with an assembly hole, so that two push shovel seats and the oil cylinder seat 3 can be conveniently and quickly installed on the first middle bottom plate section.
In addition, the length and the height of the front and the back of the lower bottom plate are completely the same, so that when the lower bottom plate is covered and welded with the upper bottom plate to form the underframe 1, the seamless welding of the upper bottom plate can be ensured, and the integral installation strength of the underframe 1 is ensured.
The above detailed description describes the preferred embodiments of the present invention, but the present invention is not limited to the details of the above embodiments, and the technical idea of the present invention can be within the scope of the present invention to perform various equivalent transformations, which all belong to the protection scope of the present invention.
Claims (1)
1. The utility model provides an improve excavator chassis and push away lower plate structure of shovel seat joint strength which characterized in that: the lower bottom plate comprises a plate I, a plate II, a plate III, a bent R arc plate IV and a bent R arc plate V;
the plate I is arranged on a middle plate of the lower bottom plate, and the lower bottom plate is sequentially welded with an R arc plate IV, a plate II, a plate I, a plate III and a bent R arc plate V from left to right; the lower base plate is axially symmetrical about the plate I, and the bending angle of the bent R arc plate IV and the bent R arc plate V is an obtuse angle;
the front and the back surfaces of the lower bottom plate are respectively welded with a supporting plate, a bending height H is arranged between the supporting plate and the lower bottom plate,
a first special-shaped opening is arranged at the welding joint of the bent R arc plate IV of the supporting plate in front of the lower base plate, a second special-shaped opening is arranged at the bent R arc plate V of the supporting plate in front of the lower base plate, the first special-shaped opening and the second special-shaped opening are completely the same,
the supporting plate in front of the lower bottom plate is sequentially divided into a supporting plate left section, a first special-shaped opening, a first supporting plate middle section, a second special-shaped opening and a supporting plate right section from left to right, and the first special-shaped opening is welded with a first special-shaped flitch matched with the supporting plate left section and the first supporting plate middle section; welding a second special-shaped flitch matched with the right section of the supporting plate and the middle section of the first supporting plate through the second special-shaped notch, wherein the first special-shaped flitch is completely the same as the first special-shaped flitch;
a third special-shaped opening is formed in the welding joint of the bent R-arc plate IV of the supporting plate behind the lower base plate, a fourth special-shaped opening is formed in the bent R-arc plate V of the supporting plate behind the lower base plate, the third special-shaped opening and the fourth special-shaped opening are completely identical,
the supporting plate behind the lower bottom plate is sequentially divided into a third special-shaped opening, a second supporting plate middle section and a fourth special-shaped opening from left to right,
a third differential flitch plate which is matched with the second middle bottom plate section is welded at the third differential notch;
a fourth special-shaped flitch plate which is matched with the second middle bottom plate section is welded at the fourth special-shaped notch;
the third irregular flitch and the fourth irregular flitch are completely the same, outward arc openings with the same size are arranged at the lower parts of the third irregular flitch and the fourth irregular flitch, the included angle of the arc openings is an acute angle, and the included angle of the arc openings and the bending angle of the bent R arc plate IV and the bent R arc plate V are complementary angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021321280.3U CN213448639U (en) | 2020-07-08 | 2020-07-08 | Lower bottom plate structure for improving connection strength of excavator underframe and push shovel seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021321280.3U CN213448639U (en) | 2020-07-08 | 2020-07-08 | Lower bottom plate structure for improving connection strength of excavator underframe and push shovel seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213448639U true CN213448639U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021321280.3U Active CN213448639U (en) | 2020-07-08 | 2020-07-08 | Lower bottom plate structure for improving connection strength of excavator underframe and push shovel seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213448639U (en) |
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2020
- 2020-07-08 CN CN202021321280.3U patent/CN213448639U/en active Active
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