CN112901692A - Front leaf spring for cross-country fire engine - Google Patents
Front leaf spring for cross-country fire engine Download PDFInfo
- Publication number
- CN112901692A CN112901692A CN201911146944.9A CN201911146944A CN112901692A CN 112901692 A CN112901692 A CN 112901692A CN 201911146944 A CN201911146944 A CN 201911146944A CN 112901692 A CN112901692 A CN 112901692A
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- China
- Prior art keywords
- piece
- sheet
- main
- lug
- bundling
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
- F16F1/26—Attachments or mountings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
Abstract
The invention provides a front leaf spring for a cross-country fire engine, which comprises: the binding sleeve comprises a lining, a first main piece, a second main piece, a third piece, a fourth piece, a fifth piece, a sixth piece, a seventh piece, an eighth piece, a ninth piece, a tenth piece, a central bolt, a central nut and a plurality of binding sleeves; one end of the first main sheet is bent upwards to form a closed first rolling lug, and the other end of the first main sheet is bent downwards to form a closed second rolling lug; the second main sheet is arranged below the first main sheet, one end of the second main sheet is bent to wrap the first rolling lug to form a first wrapping lug, and the other end of the second main sheet is bent to wrap the second rolling lug to form a second wrapping lug. And bushings are respectively arranged in the first rolling lug and the second rolling lug.
Description
Technical Field
The invention relates to the field of automobile parts, in particular to a front steel plate spring for a cross-country fire fighting truck.
Background
The steel plate spring is an elastic element which is most widely applied in automobile suspensions, and is an elastic beam which is approximately equal in strength and formed by combining a plurality of alloy spring pieces which are equal in width but unequal in length (the thicknesses can be equal or unequal).
When the steel plate spring is installed in an automobile suspension and the borne vertical load is positive, each spring piece is stressed and deformed and tends to be arched upwards. At this point, the axle and frame are brought closer together. When the axle and the frame are far away from each other, the positive vertical load and deformation borne by the leaf spring are gradually reduced and sometimes even reversed.
The main piece ear curl is seriously stressed and is a weak point, and in order to improve the stress condition of the main piece ear curl, the tail end of the second piece is often bent into the ear curl and wrapped outside the main piece ear curl, which is called as a wrapping ear. In order to make the sheets possible to slide relatively when the sheets are elastically deformed, a larger gap is left between the main sheet rolling lug and the second sheet wrapping lug. The two ends of the steel plate spring in some suspensions are not made into rolling ears, and other support connection modes such as rubber support pads are adopted.
The flat rectangular steel plate is bent, and a plurality of stacked springs for the chassis are arranged, wherein one end of each spring is arranged on the hanging bracket through a pin, and the other end of each spring is connected to the girder through a lifting lug, so that the springs can stretch out and draw back. The device is suitable for medium and large trucks at present.
In the typical front and rear leaf spring structure of the current automobile, the ear-winding ends are all at the same side of the 1 st leaf of the main spring, namely, both ends are bent upwards (or downwards). The structure is adopted by most automobile manufacturers due to the characteristics of simple process, mature design method, strong universality and the like. However, when the steel plate spring with the fully symmetrical structure is applied to a military 4 x 4 off-road fire engine, on one hand, the water storage space of the fire engine is affected, and on the other hand, the allowable loudness of the steel plate spring is exceeded due to the heavy weight of the water storage tank, so that potential safety hazards are caused.
Disclosure of Invention
The invention aims to provide a front leaf spring for an off-road fire engine.
In order to solve the technical problem, the invention is realized as follows:
a front leaf spring for an off-road fire engine, comprising: the binding sleeve comprises a lining, a first main piece, a second main piece, a third piece, a fourth piece, a fifth piece, a sixth piece, a seventh piece, an eighth piece, a ninth piece, a tenth piece, a central bolt, a central nut and a plurality of binding sleeves;
one end of the first main sheet is bent upwards to form a closed first rolling lug, and the other end of the first main sheet is bent downwards to form a closed second rolling lug; the second main sheet is arranged below the first main sheet, one end of the second main sheet is bent to wrap the first rolling lug to form a first wrapping lug, and the other end of the second main sheet is bent to wrap the second rolling lug to form a second wrapping lug. The first rolling lug and the second rolling lug are respectively provided with a lining;
the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece are sequentially arranged in a way of centering on the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece, and are fixed in a penetrating way through a center bolt and a center nut;
the plurality of bundling sleeves at least comprise a first bundling sleeve, a second bundling sleeve and a third bundling sleeve, wherein the first bundling sleeve is arranged on one side of the center and is used for sheathing and tightly bundling the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the second bundling sleeve is arranged at the other side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the third bundling sleeve is arranged on one side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet, the seventh sheet, the eighth sheet and the ninth sheet.
A front leaf spring for an off-road fire engine, comprising: the binding sleeve comprises a lining, a first main piece, a second main piece, a third piece, a fourth piece, a fifth piece, a sixth piece, a seventh piece, an eighth piece, a ninth piece, a tenth piece, a central bolt, a central nut and a plurality of binding sleeves;
one end of the first main sheet is bent upwards to form a closed first rolling lug; the second main sheet is arranged below the first main sheet, and one end of the second main sheet is bent to wrap the first rolling lug to form a first wrapping lug; the other end of the second main sheet is bent downwards to form a closed second lug, and the other end of the first main sheet is bent to wrap the second lug to form a second lug; the first rolling lug and the second rolling lug are respectively provided with a lining;
the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece are sequentially arranged in a way of centering on the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece, and are fixed in a penetrating way through a center bolt and a center nut;
the plurality of bundling sleeves at least comprise a first bundling sleeve, a second bundling sleeve and a third bundling sleeve, wherein the first bundling sleeve is arranged on one side of the center and is used for sheathing and tightly bundling the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the second bundling sleeve is arranged at the other side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the third bundling sleeve is arranged on one side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet, the seventh sheet, the eighth sheet and the ninth sheet.
The invention has the positive effects that: the front steel plate spring for the cross-country fire truck adopts the asymmetric structure, and the lug wrapping/rolling lug at one end is bent downwards, so that the water storage space of the fire truck can be improved, and the mechanical strength is also improved.
Drawings
FIG. 1 is a schematic structural view of one embodiment of a front leaf spring for an off-road fire engine of the present invention.
Fig. 2 is a sectional view taken along a-a in fig. 1.
FIG. 3 is a schematic structural view of another embodiment of a front leaf spring for an off-road fire engine of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a front leaf spring for an off-road fire engine according to an embodiment of the present invention includes: the sleeve comprises a lining 1, a first main sheet 2, a second main sheet 3, a third sheet 4, a fourth sheet 5, a fifth sheet 6, a sixth sheet 7, a seventh sheet 8, an eighth sheet 9, a ninth sheet 10, a tenth sheet 11, a center bolt 12, a center nut 13 and a plurality of strapping sleeves.
One end of the first main sheet 2 is bent upward to form a closed first tab, and the other end of the first main sheet 2 is bent downward to form a closed second tab. The second main sheet 3 is arranged below the first main sheet 2, one end of the second main sheet 3 is bent to wrap the first rolling lug to form a first wrapping lug, and the other end of the second main sheet 3 is bent to wrap the second rolling lug to form a second wrapping lug. The first eye and the second eye are respectively provided with a bushing 1.
The third and fourth pieces 4, 5 are equal in length and shorter than the first and second main pieces 2, 3. The fifth and sixth sheets 6, 7 are of equal length and shorter than the third and fourth sheets 4, 5. The seventh, eighth, ninth and tenth panels 8, 9, 10, 11 are shorter in length than the sixth panel 7 and decrease in length in order.
The first main piece 2, the second main piece 3, the third piece 4, the fourth piece 5, the fifth piece 6, the sixth piece 7, the seventh piece 8, the eighth piece 9, the ninth piece 10 and the tenth piece 11 are sequentially arranged in a way of centering on the first main piece, and penetrate through the pieces 3-11 through a center bolt 12 and a center nut 13 to fix the pieces.
The plurality of bundling sleeves at least comprise a first bundling sleeve, a second bundling sleeve and a third bundling sleeve, wherein the first bundling sleeve is arranged on one side of the centers of the sheets 3-11 and is used for sheathing and tightly bundling the second main sheet 3, the third sheet 4, the fourth sheet 5, the fifth sheet 6, the sixth sheet 7 and the seventh sheet 8. The second bundling sleeve is arranged at the other side of the center of the sheets 3-11 and is used for sheathing and tightly binding the second main sheet 3, the third sheet 4, the fourth sheet 5, the fifth sheet 6, the sixth sheet 7 and the seventh sheet 8. The third bundling sleeve is arranged at one side of the center of the sheets 3-11 and is used for sheathing and tightly binding the second main sheet 3, the third sheet 4, the fourth sheet 5, the fifth sheet 6, the sixth sheet 7, the seventh sheet 8, the eighth sheet 9 and the ninth sheet 10. By parity of reasoning, more bundling sleeves can be arranged to achieve the effect of symmetrical arrangement.
As shown in fig. 2, the strapping sleeve includes a rivet 14, a sleeve nut 15, a sleeve bolt 16, a bolt sleeve 17, and a clip 18. The clamp is a U-shaped plate, and is matched with the sleeve nut 15 and the sleeve bolt 16 to be fastened on the periphery of the corresponding reeds. The sleeve bolt 16 is externally provided with a bolt sleeve 17 to protect the bolt. The rivet 14 is riveted to the clamp 18 and the through hole of the leaf adjacent to the clamp 18 to fix the position of the bundling sleeve against displacement.
As shown in fig. 3, a front leaf spring for an off-road fire engine according to still another embodiment of the present invention includes: the sleeve comprises a lining 1, a first main sheet 2, a second main sheet 3, a third sheet 4, a fourth sheet 5, a fifth sheet 6, a sixth sheet 7, a seventh sheet 8, an eighth sheet 9, a ninth sheet 10, a tenth sheet 11, a center bolt 12, a center nut 13 and a plurality of strapping sleeves.
One end of the first main sheet 2 is bent upwards to form a closed first lug; the second main sheet 3 is arranged below the first main sheet 2, and one end of the second main sheet 3 is bent to wrap the first lug to form a first lug. The other end of the second main sheet 3 is bent downwards to form a closed second ear curl, and the other end of the first main sheet 2 is bent to wrap the second ear curl to form a second ear wrap. The first eye and the second eye are respectively provided with a bushing 1. The advantage of such structure lies in, and the ear-wrapping structure can be good parcel book ear, and mechanical properties is better.
The third and fourth pieces 4, 5 are equal in length and shorter than the first and second main pieces 2, 3. The fifth and sixth sheets 6, 7 are of equal length and shorter than the third and fourth sheets 4, 5. The seventh, eighth, ninth and tenth panels 8, 9, 10, 11 are shorter in length than the sixth panel 7 and decrease in length in order.
The second main piece 3, the third piece 4, the fourth piece 5, the fifth piece 6, the sixth piece 7, the seventh piece 8, the eighth piece 9, the ninth piece 10 and the tenth piece 11 are arranged in sequence with the centers facing each other, and penetrate through the pieces 3-11 through a center bolt 12 and a center nut 13 to be fixed.
The plurality of bundling sleeves at least comprise a first bundling sleeve, a second bundling sleeve and a third bundling sleeve, wherein the first bundling sleeve is arranged on one side of the centers of the sheets 3-11 and is used for sheathing and tightly bundling the second main sheet 3, the third sheet 4, the fourth sheet 5, the fifth sheet 6, the sixth sheet 7 and the seventh sheet 8. The second bundling sleeve is arranged at the other side of the center of the sheets 3-11 and is used for sheathing and tightly binding the second main sheet 3, the third sheet 4, the fourth sheet 5, the fifth sheet 6, the sixth sheet 7 and the seventh sheet 8. The third bundling sleeve is arranged at one side of the center of the sheets 3-11 and is used for sheathing and tightly binding the second main sheet 3, the third sheet 4, the fourth sheet 5, the fifth sheet 6, the sixth sheet 7, the seventh sheet 8, the eighth sheet 9 and the ninth sheet 10. By parity of reasoning, more bundling sleeves can be arranged to achieve the effect of symmetrical arrangement. The structure of the strapping sleeve is shown in fig. 2 and will not be described in detail here.
The front steel plate spring for the cross-country fire truck adopts the asymmetric structure, and the lug wrapping/rolling lug at one end is bent downwards, so that the water storage space of the fire truck can be improved, and the mechanical strength is also improved.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides a cross country fire engine is with preceding leaf spring which characterized in that includes: the binding sleeve comprises a lining, a first main piece, a second main piece, a third piece, a fourth piece, a fifth piece, a sixth piece, a seventh piece, an eighth piece, a ninth piece, a tenth piece, a central bolt, a central nut and a plurality of binding sleeves; one end of the first main sheet is bent upwards to form a closed first rolling lug, and the other end of the first main sheet is bent downwards to form a closed second rolling lug; the second main sheet is arranged below the first main sheet, one end of the second main sheet is bent to wrap the first rolling lug to form a first wrapping lug, the other end of the second main sheet is bent to wrap the second rolling lug to form a second wrapping lug, and bushings are respectively arranged in the first rolling lug and the second rolling lug; the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece are sequentially arranged in a way of centering on the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece, and are fixed in a penetrating way through a center bolt and a center nut; the plurality of bundling sleeves at least comprise a first bundling sleeve, a second bundling sleeve and a third bundling sleeve, wherein the first bundling sleeve is arranged on one side of the center and is used for sheathing and tightly bundling the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the second bundling sleeve is arranged at the other side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the third bundling sleeve is arranged on one side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet, the seventh sheet, the eighth sheet and the ninth sheet.
2. The front leaf spring for an off-road fire fighting vehicle of claim 1, wherein the third and fourth leaves are equal in length and shorter in length than the second main leaf; the fifth piece and the sixth piece are equal in length and shorter than the third piece and the fourth piece; the seventh, eighth, ninth and tenth panels are shorter in length than the sixth panel and decrease in length in order.
3. The utility model provides a cross country fire engine is with preceding leaf spring which characterized in that includes: the binding sleeve comprises a lining, a first main piece, a second main piece, a third piece, a fourth piece, a fifth piece, a sixth piece, a seventh piece, an eighth piece, a ninth piece, a tenth piece, a central bolt, a central nut and a plurality of binding sleeves; one end of the first main sheet is bent upwards to form a closed first rolling lug; the second main sheet is arranged below the first main sheet, and one end of the second main sheet is bent to wrap the first rolling lug to form a first wrapping lug; the other end of the second main sheet is bent downwards to form a closed second lug, and the other end of the first main sheet is bent to wrap the second lug to form a second lug; the first rolling lug and the second rolling lug are respectively provided with a lining; the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece are sequentially arranged in a way of centering on the first main piece, the second main piece, the third piece, the fourth piece, the fifth piece, the sixth piece, the seventh piece, the eighth piece, the ninth piece and the tenth piece, and are fixed in a penetrating way through a center bolt and a center nut; the plurality of bundling sleeves at least comprise a first bundling sleeve, a second bundling sleeve and a third bundling sleeve, wherein the first bundling sleeve is arranged on one side of the center and is used for sheathing and tightly bundling the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the second bundling sleeve is arranged at the other side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet and the seventh sheet; the third bundling sleeve is arranged on one side of the center and is used for sheathing and tightly binding the second main sheet, the third sheet, the fourth sheet, the fifth sheet, the sixth sheet, the seventh sheet, the eighth sheet and the ninth sheet.
4. The front leaf spring for an off-road fire fighting vehicle of claim 3, wherein the third and fourth leaves are equal in length and shorter in length than the second main leaf; the fifth piece and the sixth piece are equal in length and shorter than the third piece and the fourth piece; the seventh, eighth, ninth and tenth panels are shorter in length than the sixth panel and decrease in length in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911146944.9A CN112901692A (en) | 2019-11-19 | 2019-11-19 | Front leaf spring for cross-country fire engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911146944.9A CN112901692A (en) | 2019-11-19 | 2019-11-19 | Front leaf spring for cross-country fire engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112901692A true CN112901692A (en) | 2021-06-04 |
Family
ID=76103567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911146944.9A Withdrawn CN112901692A (en) | 2019-11-19 | 2019-11-19 | Front leaf spring for cross-country fire engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112901692A (en) |
-
2019
- 2019-11-19 CN CN201911146944.9A patent/CN112901692A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210604 |
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| WW01 | Invention patent application withdrawn after publication |