CN220082159U - Adjust supporting spring structure - Google Patents
Adjust supporting spring structure Download PDFInfo
- Publication number
- CN220082159U CN220082159U CN202321535215.4U CN202321535215U CN220082159U CN 220082159 U CN220082159 U CN 220082159U CN 202321535215 U CN202321535215 U CN 202321535215U CN 220082159 U CN220082159 U CN 220082159U
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- Prior art keywords
- spring
- seat
- straight hole
- section
- adjusting
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- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of plunger pump adjustment, and discloses an adjusting support spring structure which comprises an adjusting seat, a spring seat, an adjusting seat, a large spring and a small spring, wherein a threaded hole, a first straight hole and a second straight hole are coaxially formed in the adjusting seat, the adjusting seat comprises a threaded section, a first step shaft section and a second step section, a groove is formed between one end of the first step shaft section and the threaded section, an O-shaped ring is arranged in the groove, the threaded section is connected with the threaded hole, the first step shaft section and the second step shaft section are located in the adjusting seat, the spring seat is located outside the first straight hole, one end of the large spring is connected to the bottom of the first straight hole, the other end of the large spring is connected with the spring seat, one end of the small spring is connected to the second step shaft section, the other end of the small spring is connected to the spring seat, the O-shaped ring is used for sealing and replacing a spring pad, the compression amount of the spring is prevented from being inconsistent with the displacement of the adjusting seat, the displacement distance of the small spring is reduced, and the small spring is prevented from falling off from the spring seat.
Description
Technical Field
The utility model relates to the technical field of plunger pump adjustment, in particular to an adjusting support spring structure.
Background
In the variable mechanism of the plunger pump, the overflow pressure variable is controlled by utilizing the principle that hydraulic pressure acting on a valve core is directly balanced with spring force; to meet this requirement, the springs are in a compressed state, provide a pre-load force, ensure the same starting point for the adjustment, and make the starting point for the hydraulic force on the valve core to move against the spring force the same. When the spring is in a compressed state, one end of the spring is stressed by the adjusting rod, and the other end of the spring is stressed by the valve core.
Currently, manufacturers of hydraulic elements of plunger pumps at home and abroad usually adopt a spring pad 16 and a spring seat 3 to support a spring when designing a structure for supporting the spring by the adjusting rod, the adjusting rod 15 is contacted with the spring pad 16, and the valve core 5 is contacted with the spring seat 4, as shown in fig. 1 and 2. This structure presents the following risks: 1. the spring pad 16 is obliquely clamped in the inner hole of the adjusting seat 3 to cause the O-shaped ring 2 to be clamped, so that the displacement of the adjusting rod 15 is inconsistent with the compression amount of the spring; 2. the small spring 6 can move a longer distance in the horizontal direction, and the small spring 6 can be out of the spring seat 4; thereby causing deviation of experimental results.
Therefore, the adjusting and supporting spring structure has the defect that the spring pad is inclined and blocked, and the free moving distance of the small spring is overlarge.
Disclosure of Invention
The utility model aims to solve the technical problems that: the spring pad is easy to incline and clamp, and the small spring can move too far freely and easily to be out of the spring seat.
In order to solve the technical problems, the technical scheme of the utility model provides an adjusting support spring structure, which comprises an adjusting seat, a spring seat, an adjusting seat, a large spring and a small spring, wherein a coaxial threaded hole, a first straight hole and a second straight hole are formed in the adjusting seat, the threaded hole, the first straight hole and the second straight hole are sequentially communicated and penetrate through the adjusting seat, the adjusting seat comprises a threaded section and a first step shaft section, a groove is formed between one end of the first step shaft section and the threaded section, the other end of the first step shaft section is provided with the second step shaft section, an O-shaped ring is arranged in the groove, the threaded section is connected with the threaded hole in a matched mode, the groove is located in the first straight hole, the first step shaft section and the second step shaft section are located in the adjusting seat, the spring seat and the second straight hole are coaxial and are located on the outer side of the adjusting seat, one end of the large spring is connected to the bottom of the second straight hole, the other end of the spring is connected with the spring seat, one end of the small spring is sleeved on the second step shaft section and abuts against the first step shaft section, the other end of the small spring is connected to one side of the large spring, which is not connected with the large spring.
Through adopting above-mentioned technical scheme, set up the recess and use O type circle to seal on adjusting the pole seat, replace the use of spring pad, avoid the spring compression volume inconsistent with adjusting pole seat displacement, and the extension adjusts the pole seat to set up the second step axle section and be used for loading card little spring, reduce the displacement distance of little spring, avoid the little spring to drop from the spring holder.
Optionally, a side of the spring seat is provided with a first supporting shaft with the same inner diameter as the small spring and a second supporting shaft with the same inner diameter as the large spring, the first supporting shaft and the second supporting shaft are coaxially arranged, the small spring is nested on the first supporting shaft, and the large spring is nested on the second supporting shaft.
Through adopting above-mentioned technical scheme, set up first back shaft and second back shaft and further fixed big spring and little spring, reduce the spring and break away from the risk.
Optionally, a concave circular groove is formed in the center of one side, connected with the valve core, of the spring seat, a convex circle is arranged on the valve core, and the concave circular groove is connected with the convex circle in a matched mode.
Through adopting above-mentioned technical scheme, use concave circular groove to replace the conical surface groove, increase the area of contact of spring holder and case, prevent that the spring holder from appearing the phenomenon of slope jamming.
Optionally, the outer diameter of the groove is smaller than the inner diameter of the large spring, the outer diameter of the first step shaft section is larger than the outer diameter of the small spring, and the outer diameter of the second step shaft section is smaller than the inner diameter of the large spring.
Through adopting above-mentioned technical scheme, make the recess external diameter be less than big spring internal diameter, avoid big spring to produce the interference with the recess when installing, first step axle section external diameter is greater than little spring external diameter can guarantee that little spring contact is abundant.
Optionally, the internal diameter of first straight hole is less than the internal diameter of second straight hole, and first straight hole and second straight hole junction set up the fillet, be equipped with the clearance between second straight hole internal diameter and the big spring external diameter.
Through adopting above-mentioned technical scheme, set up the fillet and can prevent that the recess from getting into when first straight hole to produce the side cut to O type circle, set up the clearance and reduce friction.
In summary, the utility model has at least one of the following advantages:
1. the groove is formed in the adjusting rod seat and is sealed by the O-shaped ring, the spring pad is replaced, the fact that the compression amount of the spring is inconsistent with the displacement of the adjusting rod seat is avoided, the adjusting rod seat is prolonged, the second step shaft section is used for clamping the small spring, the displacement distance of the small spring is reduced, and the small spring is prevented from falling off from the spring seat.
2. The concave circular groove is used for replacing the conical surface groove, so that the contact area of the spring seat and the valve core is increased, and the phenomenon of inclined clamping stagnation of the spring seat is prevented.
Drawings
FIG. 1 is a schematic view of a prior art spring structure installed in a valve body;
FIG. 2 is a schematic diagram of a conventional spring structure;
FIG. 3 is a schematic view of the structure of the adjustable support spring of the present utility model;
FIG. 4 is a schematic view of the adjusting seat of the present utility model;
FIG. 5 is a schematic view of the structure of the adjusting lever seat of the present utility model;
FIG. 6 is a schematic view of a spring seat according to the present utility model;
in the figure: 1. an adjusting rod seat; 2. an O-ring; 3. an adjusting seat; 4. a spring seat; 5. a valve core; 6. a small spring; 7. a large spring; 8. a threaded hole; 9. a first straight hole; 10. a second straight hole; 11. a threaded section; 12. a first stepped shaft section; 13. a second stepped shaft section; 14. a concave circular groove; 15. an adjusting rod; 16. and a spring pad.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-6.
The utility model discloses an adjusting support spring structure, referring to figures 3-5, which comprises an adjusting seat 3, a spring seat 4, an adjusting seat 1, a large spring 7 and a small spring 6, wherein a coaxial threaded hole 8, a first straight hole 9 and a second straight hole 10 are arranged in the adjusting seat 3, the threaded hole 8, the first straight hole 9 and the second straight hole 10 are sequentially communicated and penetrate through the adjusting seat 3, the adjusting seat 1 comprises a threaded section 11 and a first step shaft section 12, a groove is arranged between one end of the first step shaft section 12 and the threaded section 11, the other end of the first step shaft section 12 is provided with a second step shaft section 13, an O-shaped ring 2 is arranged in the groove, the groove is in sealing connection with the first straight hole 9 through the O-shaped ring 2, the threaded section 11 is in matched connection with the threaded hole 8, the groove is positioned in the first straight hole 9, the first step shaft section 12 and the second step shaft section 13 are positioned in the adjusting seat 3, the spring seat 4 is coaxial with the second straight hole 10 and positioned outside the adjusting seat 3, one end of the large spring 7 is connected to the bottom of the second straight hole 10, the other end is connected to the spring seat 4, the other end of the small spring 6 is sleeved on the second step shaft section 13 and abuts against the first step shaft section 12, and the other end of the spring seat 4 is connected to the first step shaft section 12.
When the novel adjustable spring is used, the O-shaped ring 2 is installed in the groove of the adjusting rod seat 1, then the adjusting rod seat 1 is put in from one end of the second straight hole 10 of the adjusting seat 3, the O-shaped ring 2 in the groove of the adjusting rod seat 1 is screwed out through the threaded hole 8, the O-shaped ring 2 is compressed in the first straight hole 9, then one end of the large spring 7 is arranged at the bottom of the second straight hole 10, the inner diameter of the large spring passes through the first step shaft section 12 of the adjusting rod seat 1, the other end of the large spring is connected or abutted on the spring seat 4, one end face of the small spring 7 is arranged on the second step shaft section 13 of the adjusting rod seat 1, the inner diameter of the small spring 7 passes through the second step shaft section 13, the other end of the small spring 7 is connected or abutted on the spring seat 4, the groove is formed in the adjusting rod seat 1, the O-shaped ring 2 is used for sealing, and the use of a spring cushion is replaced, the fact that the compression amount of the spring is inconsistent with the displacement of the adjusting rod seat 1 is avoided, the second step shaft section 13 is used for clamping the small spring 6, the displacement distance of the small spring 6 is reduced, and the small spring 6 is prevented from falling off from the spring seat 4 is arranged.
In a further embodiment, referring to fig. 6, a side surface of the spring seat 4 is provided with a first supporting shaft with the same inner diameter as the small spring 6 and a second supporting shaft with the same inner diameter as the large spring 7, the first supporting shaft and the second supporting shaft are coaxial, the other side surface is provided with a valve core 5, a concave circular groove 14 is arranged at the central part of one side of the spring seat 4 connected with the valve core 5, a convex circle is arranged on the valve core 5, and the concave circular groove 14 is connected with the convex circle in a matching way.
When the spring seat is used, the large spring 7 is nested on the second supporting shaft, the small spring 6 is nested on the first supporting shaft, then the concave circular groove 14 is aligned with the convex circle on the valve core 5, the large spring 7 and the small spring 6 are further fixed through the first supporting shaft and the second supporting shaft, the spring separation risk is reduced, the concave circular groove 14 is used for replacing a conical surface groove, the contact area of the spring seat 4 and the valve core 5 is increased, and the phenomenon of inclined clamping stagnation of the spring seat 4 is prevented.
In further embodiments, the groove outer diameter is smaller than the inner diameter of the large spring 7, interference generated during installation of the large spring 7 can be avoided, the outer diameter of the first step shaft section 12 is larger than the outer diameter of the small spring 6, the small spring 6 is guaranteed to be fully contacted with the outer side surface of the first step shaft section 12, the small spring 6 is prevented from sliding out, the outer diameter of the second step shaft section 13 is smaller than the inner diameter of the large spring 7, assembly interference is avoided, the diameter of the threaded hole 8 is smaller than the inner diameter of the straight hole 9, the inner diameter of the first straight hole 9 is smaller than the inner diameter of the second straight hole 10, a round angle is arranged at the joint of the first straight hole 9 and the second straight hole 10, the O-shaped ring 2 of the groove of the adjusting rod seat 1 is prevented from being trimmed when entering, a gap is reserved between the inner diameter of the second straight hole 10 and the outer diameter of the large spring 7, and friction during installation and movement is reduced.
In summary, in the use of the utility model, the O-ring 2 is installed in the groove of the adjusting rod seat 1, then the adjusting rod seat 1 is put in from one end of the second straight hole 10 of the adjusting seat 3, the O-ring 2 in the groove of the adjusting rod seat 1 is compressed in the first straight hole 9 by screwing out the threaded hole 8, then one end of the large spring 7 is arranged at the bottom of the second straight hole 10, the inner diameter of the large spring 7 passes through the first step shaft section 12 of the adjusting rod seat 1, the other end of the large spring is connected to the second supporting shaft of the spring seat 4, one end of the small spring 7 is arranged on the second step shaft section 13 of the adjusting rod seat 1, the inner diameter of the small spring 7 passes through the second step shaft section 13, the other end of the small spring 7 is connected to the first supporting shaft of the spring seat 4, then the adjusting supporting spring structure is integrally installed on the valve body, the concave circular groove 14 on the spring seat 4 is aligned with the convex circular bead on the valve core 5, then the adjusting seat 3 is fixed by using the nut, the pretightening force of the large spring 7 reaches the requirement, then the small spring 6 can be screwed to adjust the small spring 6, the pressure balance is further accurately adjusted, the groove is arranged on the adjusting rod seat 1, the groove is used for replacing the O-ring 2, the small spring 6 is used for replacing the small spring seat 6, the small spring seat 1 and the displacement is not consistent, and the displacement is avoided, and the small spring seat 1 is not to be displaced from the small spring seat 1 is set.
It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.
Claims (5)
1. The utility model provides an adjust supporting spring structure, its characterized in that, including adjusting seat (3), spring holder (4), adjusting lever seat (1), big spring (7) and little spring (6), inside screw hole (8), first straight hole (9) and the second straight hole (10) that are equipped with of adjusting seat (3), screw hole (8), first straight hole (9) and second straight hole (10) communicate in proper order and run through adjusting seat (3), adjusting lever seat (1) including screw thread section (11) and first step axle section (12), be equipped with the recess between first step axle section (12) one end and screw thread section (11), first step axle section (12) other end is equipped with second step axle section (13), set up O type circle (2) in the recess, screw thread section (11) are connected with screw hole (8) cooperation, the recess is arranged in first straight hole (9), first step axle section (12) and second step axle section (13) are arranged in adjusting seat (3) inside, first step axle section (4) and second straight hole (10) are located the coaxial spring holder (7) and are connected in the bottom straight hole (10), one end of the small spring (6) is sleeved on the second step shaft section (13) and abuts against the first step shaft section (12), the other end of the small spring is connected to the spring seat (4), and one side, which is not connected with the large spring (7) and the small spring (6), of the spring seat (4) is connected with the valve core (5).
2. The structure of the adjustable supporting spring according to claim 1, wherein a side surface of the spring seat (4) is provided with a first supporting shaft with the same inner diameter as the small spring (6) and a second supporting shaft with the same inner diameter as the large spring (7), the first supporting shaft and the second supporting shaft are coaxially arranged, the small spring (6) is sleeved on the first supporting shaft, and the large spring (7) is sleeved on the second supporting shaft.
3. The adjusting and supporting spring structure according to claim 1, wherein a concave circular groove (14) is formed in the center of one side, connected with the valve core (5), of the spring seat (4), a convex circle is arranged on the valve core (5), and the concave circular groove (14) is connected with the convex circle in a matched mode.
4. The adjustable support spring structure according to claim 1, wherein the groove outer diameter is smaller than the inner diameter of the large spring (7), the first step shaft section (12) outer diameter is larger than the outer diameter of the small spring (6), and the second step shaft section (13) outer diameter is smaller than the inner diameter of the large spring (7).
5. The adjustable support spring structure according to claim 1, wherein the inner diameter of the first straight hole (9) is smaller than the inner diameter of the second straight hole (10), and a rounded corner is arranged at the joint of the first straight hole (9) and the second straight hole (10), and a gap is arranged between the inner diameter of the second straight hole (10) and the outer diameter of the large spring (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321535215.4U CN220082159U (en) | 2023-06-15 | 2023-06-15 | Adjust supporting spring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321535215.4U CN220082159U (en) | 2023-06-15 | 2023-06-15 | Adjust supporting spring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220082159U true CN220082159U (en) | 2023-11-24 |
Family
ID=88821880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321535215.4U Active CN220082159U (en) | 2023-06-15 | 2023-06-15 | Adjust supporting spring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220082159U (en) |
-
2023
- 2023-06-15 CN CN202321535215.4U patent/CN220082159U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |