CN220890654U - Mounting structure of built-in sensor in oil hole of lifting hydraulic cylinder - Google Patents
Mounting structure of built-in sensor in oil hole of lifting hydraulic cylinder Download PDFInfo
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- CN220890654U CN220890654U CN202322801001.3U CN202322801001U CN220890654U CN 220890654 U CN220890654 U CN 220890654U CN 202322801001 U CN202322801001 U CN 202322801001U CN 220890654 U CN220890654 U CN 220890654U
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- positioning block
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model relates to an installation structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder, which comprises a cylinder bottom, a cylinder body and an end cover which are assembled in sequence from top to bottom to form a cavity, wherein a plunger rod is installed inside and outside penetrating through the end cover, the axial center of the plunger rod is provided with an oil hole, the oil hole penetrates through the plunger rod upwards, and the lower end of the oil hole bypasses an oil hole; a hollow support rod is arranged in the center of the bottom surface of the cylinder bottom, the support rod extends downwards into the oil hole, a guide positioning block is arranged at the bottom end of the support rod, and a magnetic ring assembly is embedded in the guide positioning block; the bottom end of the plunger rod is provided with a sensor component, and a measuring rod of the sensor component upwards passes through the magnetic ring component and enters the hollow supporting rod; therefore, the sensor is internally arranged in the oil hole, the effective and reliable operation of the oil inlet and the oil cylinder in the middle part is ensured, the stable use of the sensor is ensured, and the practicability is good.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic executive component which converts hydraulic energy into mechanical energy, and outputs linear motion through the in-out actuation of oil.
In the prior art, oil holes for oil inlet and outlet are usually formed in the wall of a corresponding cavity of a hydraulic cylinder, a sensor is arranged at the outer end part of a piston rod/plunger rod in order to accurately monitor the real-time movement position of the feedback hydraulic cylinder in real time, a sensor measuring rod extends in the axial direction of the rod, and a magnetic ring assembly fixedly arranged on a cylinder body is matched with the measuring rod to work so as to realize the feedback of the real-time position; the measuring rod is arranged at the axial center of the rod, so that the influence on the use of the sensor due to circumferential rotation errors in the working process of the hydraulic cylinder can be effectively avoided.
However, due to the limitation of the structure and other factors, for the oil cylinder with the middle oil inlet, the oil hole is formed in the piston rod/plunger rod, the oil hole and the sensor interfere in the forming and mounting positions, and the oil hole and the sensor are formed along the axial center of the rod, so that the good normal use state of the oil cylinder can be ensured.
Disclosure of utility model
The application aims at the defects in the prior art, and provides a mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder, so that the built-in sensor is mounted in the oil hole, the effective and reliable operation of the oil inlet and the oil cylinder in the middle part is ensured, and meanwhile, the stable use of the sensor is ensured, and the practicability is good.
The technical scheme adopted by the utility model is as follows:
The mounting structure of the built-in sensor in the oil hole of the lifting hydraulic cylinder comprises a cylinder bottom, a cylinder body and an end cover which are assembled in sequence from top to bottom to form a cavity, wherein a plunger rod is arranged inside and outside penetrating through the end cover, the axial center of the plunger rod is provided with an oil hole, the oil hole penetrates through the plunger rod upwards, and the lower end of the oil hole bypasses an oil hole; a hollow support rod is arranged in the center of the bottom surface of the cylinder bottom, the support rod extends downwards into the oil hole, a guide positioning block is arranged at the bottom end of the support rod, and a magnetic ring assembly is embedded in the guide positioning block; and a sensor assembly is arranged at the bottom end of the plunger rod, and a measuring rod of the sensor assembly upwards penetrates through the magnetic ring assembly.
As a further improvement of the above technical scheme:
the structure of the guide positioning block is as follows: the oil hole comprises more than two supporting angles, wherein clearance fit is formed between each supporting angle and the inner wall surface of the oil hole, an oil passing surface is formed by connection between adjacent supporting angles, and a spacing distance exists between the oil passing surface and the inner wall surface of the oil hole, so that an oil passing area is formed.
The oil passing surface is a plane or concave curved surface structure.
The number of the supporting angles is three, and the guide positioning blocks with the regular triangle structures are formed.
A supporting angle arc surface facing the inner wall surface of the oil hole is compounded with copper alloy; and the guide positioning block is provided with a through hole penetrating up and down.
The center of the bottom surface of the guide positioning block is concave to form a space for embedding the magnetic ring assembly; the bottom end of the supporting rod is inserted and fixed on the guide positioning block.
The oil hole comprises a large-aperture section and a small-aperture section which are connected up and down, and the guide positioning block is positioned on the large-aperture section; the diameter of the circumscribing circle formed by the connection of the outer wall surfaces of the supporting angles and the large aperture section form a guiding matching relation.
The outer wall surface of the upper end of the plunger rod is sleeved with a guide sleeve, and the guide sleeve is provided with a through oil hole parallel to the axial direction.
Guide bearings are installed on the inner wall surface of the cylinder body above the end cover at intervals, and the inner wall surfaces of the guide bearings are attached to the outer wall surface of the plunger rod.
And a spacer bush is pressed between the two groups of guide bearings.
The beneficial effects of the utility model are as follows:
The utility model has compact, reasonable and ingenious structure, the support rod is internally arranged in the oil hole arranged in the axial center of the plunger rod, the end part of the support rod is provided with the guide positioning block, and the magnetic ring component is arranged by the guide positioning block, so that on one hand, the reliability and stability of the relative linear movement between the magnetic ring component and the sensor measuring rod are effectively ensured, and on the other hand, the normal flow of oil in the oil hole is not influenced by the guide positioning block, thereby realizing the built-in installation of the sensor in the oil hole, ensuring the effective and reliable operation of the oil inlet and the oil cylinder in the middle part, and simultaneously ensuring the stable use of the sensor, and the practicability is good;
The utility model also has the following advantages:
The arrangement of the supporting angle on the guide positioning block effectively ensures the clearance fit between the guide positioning block and the inner wall surface of the oil hole, and provides reliable guarantee of guide and positioning for the relative linear movement between the magnetic ring component and the measuring rod; the oil passing surface is arranged between the two supporting angles on the guide positioning block, and an oil passing area is formed between the oil passing surface and the inner wall surface of the oil hole, so that the oil passing at the guide positioning block is effectively ensured;
the arrangement of the supporting angle and the oil passing surface on the guide positioning block effectively ensures the reliable use of the sensor and ensures the oil passing amount of the oil hole; the oil passing amount can be further met and ensured through the arrangement of the through holes.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is a schematic assembly view of the guide positioning block of the present utility model with respect to the oil hole in the plunger rod.
FIG. 4 is a schematic view of the present utility model in use.
Wherein: 2. guide sleeve; 3. a support rod; 4. a plunger rod; 5. a guide bearing; 6. a magnetic ring assembly; 7. an oil hole; 8. a sensor assembly; 9. a guide positioning block; 10. an exhaust line;
11. A cylinder bottom; 12. a cylinder; 13. an end cap;
50. A spacer bush;
70. an oil port; 71. a large aperture section; 72. a small aperture section;
81. a measuring rod;
91. A support angle; 92. a through hole; 93. and (5) oil level passing.
Detailed Description
The following describes specific embodiments of the present utility model with reference to the drawings.
As shown in fig. 1, the installation structure of the sensor built in the oil hole of the lifting hydraulic cylinder in this embodiment comprises a cylinder bottom 11, a cylinder body 12 and an end cover 13 which are assembled in sequence from top to bottom to form a cavity, a plunger rod 4 is installed through the end cover 13 inside and outside, an oil hole 7 is formed in the axial center of the plunger rod 4, the oil hole 7 penetrates through the plunger rod 4 upwards, and the lower end of the oil hole 7 bypasses an oil hole 70; a hollow supporting rod 3 is arranged in the center of the bottom surface of the cylinder bottom 11, the supporting rod 3 downwards extends into the oil hole 7, a guide positioning block 9 is arranged at the bottom end of the supporting rod 3, and a magnetic ring assembly 6 is embedded in the guide positioning block 9; the sensor component 8 is installed at the bottom end of the plunger rod 4, and the measuring rod 81 of the sensor component 8 passes through the magnetic ring component 6 upwards.
In this embodiment, the rod 3 is internally assembled in the oil hole 7 formed in the axial center of the plunger rod 4, the guide positioning block 9 is mounted at the end of the rod 3, and the magnetic ring assembly 6 is mounted by the guide positioning block 9, so that on one hand, the reliability and stability of the relative linear movement between the magnetic ring assembly 6 and the sensor measuring rod 81 are effectively ensured by the guide positioning block 9, and on the other hand, the normal flow of oil in the oil hole 7 is not influenced by the guide positioning block 9, and the sensor is internally mounted in the oil hole 7.
As shown in fig. 2 and 3, the guide positioning block 9 has the following structure: the oil hole comprises more than two supporting angles 91, wherein clearance fit is formed between the supporting angles 91 and the inner wall surface of the oil hole 7, the adjacent supporting angles 91 are connected to form an oil passing surface 93, and a separation distance exists between the oil passing surface 93 and the inner wall surface of the oil hole 7 to form an oil passing area.
The arrangement of the supporting angle 91 on the guide positioning block 9 effectively ensures the clearance fit between the guide positioning block and the inner wall surface of the oil hole 7, and provides reliable guarantee of guiding and positioning for the relative linear movement between the magnetic ring assembly 6 and the measuring rod 81; the oil passing surface 93 is arranged between the two supporting angles 91 on the guide positioning block 9, and an oil passing area is formed between the oil passing surface and the inner wall surface of the oil hole 7, so that the oil passing at the guide positioning block 9 is effectively ensured.
The oil passing surface 93 is of a plane or concave curved surface structure, so that smooth passing of oil is effectively ensured, and the oil passing amount is assisted.
The number of the supporting angles 91 is three, and the guide positioning blocks 9 with regular triangle structures are formed.
The triangular structure is generally considered as a relatively stable structure, and in this embodiment, the guide positioning block 9 is set to be a triangular structure, so that on one hand, the reliability of the self result and the guide centering is ensured, and on the other hand, the cross-sectional area is small, and the oil passing amount can be effectively ensured in the limited cross-sectional space.
The supporting angle 91 arc surface of the inner wall surface of the oil hole 7 is compounded with copper alloy, so that the smoothness of relative sliding of the guide positioning block 9 relative to the inner wall of the oil hole 7 is effectively ensured through the compounded copper alloy, and the galling phenomenon caused by relative movement is prevented.
The guide positioning block 9 is provided with a through hole 92 penetrating up and down.
The arrangement of the supporting angle 91 and the oil passing surface 93 on the guide positioning block 9 effectively ensures the reliable use of the sensor and ensures the oil passing amount of the oil hole 7; the oil passing amount can be further satisfied and ensured through the opening of the through hole 92.
In practical design and use, the cross-sectional area of the oil passing area and the through hole 92 is equivalent to the cross-sectional area of the oil port 70, so that the oil passing requirement of the guide positioning block 9 in the oil hole 7 can be met.
The center of the bottom surface of the guide positioning block 9 is concave to form a space for embedding the magnetic ring assembly 6, so that the installation of the magnetic ring on the guide positioning block 9 is realized; the bottom end of the supporting rod 3 is inserted and fixed on a guide positioning block 9, and the guide positioning block 9 is arranged at the end part of the supporting rod 3.
The oil hole 7 comprises a large-aperture section 71 and a small-aperture section 72 which are connected up and down, and the guide positioning block 9 is positioned on the large-aperture section 71; the diameter of the circumscribed circle formed by the connection of the outer wall surfaces of the supporting angles 91 and the large-aperture section 71 form a guiding fit relation, so that smooth and reliable movement of the guiding positioning block 9 in the large-aperture section 71 of the oil hole 7 is effectively ensured.
The outer wall surface of the upper end of the plunger rod 4 is sleeved with a guide sleeve 2, and the guide sleeve 2 is provided with a through oil hole parallel to the axial direction; the guide sleeve 2 plays an auxiliary guiding role on the movement of the plunger rod 4, and oil in cavities on two sides of the guide sleeve 2 can smoothly circulate through the oil holes.
Guide bearings 5 are installed on the inner wall surface of the cylinder body 12 above the end cover 13 at intervals, and the inner wall surfaces of the guide bearings 5 are attached to the outer wall surface of the plunger rod 4.
A spacer 50 is pressed between the two sets of guide bearings 5.
As shown in fig. 1 and 4, the exhaust pipe 10 is further included to be communicated with the upper cavity, and the exhaust pipe 10 may be externally arranged on the outer side surface of the cylinder body 12.
In the working and using process of the hydraulic cylinder, oil is fed into the oil hole 7 through the oil port 70, and the oil passes through the oil passing area on the guide positioning block 9 upwards until the oil flows upwards along the oil hole 7 to a cavity above the top of the plunger rod 4, so that the hydraulic cylinder is driven to output linear movement, and a state schematic diagram when the plunger rod 4 and the cylinder body 12 in the single-acting oil cylinder relatively move to the middle is shown in fig. 4.
The utility model realizes that the sensor is internally arranged in the oil hole, ensures the effective and reliable operation of the oil inlet and the oil cylinder in the middle part, and ensures the stable use of the sensor, thereby having good practicability.
The above description is intended to illustrate the utility model and not to limit it, the scope of which is defined by the claims, and any modifications can be made within the scope of the utility model.
Claims (10)
1. The utility model provides a mounting structure of built-in sensor in lifting hydraulic cylinder oilhole, includes cylinder bottom (11), cylinder body (12) and end cover (13) of from last to the lower assembly in proper order, constitutes cavity, its characterized in that: the inner and outer penetrating end covers (13) are provided with plunger rods (4), the axial center of each plunger rod (4) is provided with an oil hole (7), each oil hole (7) upwards penetrates through each plunger rod (4), and the lower ends of the oil holes (7) are bypassed with the oil ports (70); a hollow supporting rod (3) is arranged in the center of the bottom surface of the cylinder bottom (11), the supporting rod (3) downwards extends into the oil hole (7), a guide positioning block (9) is arranged at the bottom end of the supporting rod (3), and a magnetic ring assembly (6) is embedded in the guide positioning block (9); the bottom end of the plunger rod (4) is provided with a sensor component (8), and a measuring rod (81) of the sensor component (8) upwards penetrates through the magnetic ring component (6).
2. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 1, wherein: the structure of the guide positioning block (9) is as follows: the oil hole device comprises more than two supporting angles (91), wherein clearance fit is formed between the supporting angles (91) and the inner wall surface of the oil hole (7), an oil passing surface (93) is formed by connection between adjacent supporting angles (91), and an interval distance exists between the oil passing surface (93) and the inner wall surface of the oil hole (7) to form an oil passing area.
3. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 2, wherein: the oil passing surface (93) is of a plane or concave curved surface structure.
4. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 2, wherein: the number of the supporting angles (91) is three, and the guide positioning blocks (9) with the regular triangle structure are formed.
5. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 2, wherein: arc surface of the supporting angle (91) facing the inner wall surface of the oil hole (7) is compounded with copper alloy; and a through hole (92) penetrating up and down is formed in the guide positioning block (9).
6. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 1, wherein: the center of the bottom surface of the guide positioning block (9) is concave to form a space for embedding the magnetic ring assembly (6); the bottom end of the supporting rod (3) is inserted and fixed on the guide positioning block (9).
7. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 1, wherein: the oil hole (7) comprises a large-aperture section (71) and a small-aperture section (72) which are connected up and down, and the guide positioning block (9) is positioned on the large-aperture section (71); the diameter of the circumscribing circle formed by the connection of the outer wall surfaces of the supporting angles (91) and the large aperture section (71) form a guiding matching relationship.
8. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 1, wherein: the outer wall surface of the upper end of the plunger rod (4) is sleeved with a guide sleeve (2), and the guide sleeve (2) is provided with a through oil hole parallel to the axial direction.
9. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 1, wherein: guide bearings (5) are arranged on the inner wall surface of the cylinder body (12) above the end cover (13) at intervals, and the inner wall surfaces of the guide bearings (5) are attached to the outer wall surface of the plunger rod (4).
10. The mounting structure of a built-in sensor in an oil hole of a lifting hydraulic cylinder as claimed in claim 9, wherein: a spacer bush (50) is pressed between the two groups of guide bearings (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322801001.3U CN220890654U (en) | 2023-10-19 | 2023-10-19 | Mounting structure of built-in sensor in oil hole of lifting hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322801001.3U CN220890654U (en) | 2023-10-19 | 2023-10-19 | Mounting structure of built-in sensor in oil hole of lifting hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890654U true CN220890654U (en) | 2024-05-03 |
Family
ID=90876671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322801001.3U Active CN220890654U (en) | 2023-10-19 | 2023-10-19 | Mounting structure of built-in sensor in oil hole of lifting hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890654U (en) |
-
2023
- 2023-10-19 CN CN202322801001.3U patent/CN220890654U/en active Active
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