CN220863896U - Assembling tool for assembling spring in hose - Google Patents
Assembling tool for assembling spring in hose Download PDFInfo
- Publication number
- CN220863896U CN220863896U CN202322614835.3U CN202322614835U CN220863896U CN 220863896 U CN220863896 U CN 220863896U CN 202322614835 U CN202322614835 U CN 202322614835U CN 220863896 U CN220863896 U CN 220863896U
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- Prior art keywords
- spring
- mandrel
- hose
- tightening device
- assembling
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses an assembly fixture for assembling a spring in a hose, which comprises a mandrel and a tightening device, wherein the mandrel is of a cylindrical structure; the center of the tightening device is provided with a unthreaded hole penetrating along the axial direction, the tightening device is sleeved on the outer wall of the mandrel and is movably connected with the mandrel, and the mandrel is in clearance fit with the unthreaded hole; when in assembly, the spring is sleeved on the outer wall of the mandrel, and two ends of the spring are respectively fixed on the top end of the mandrel and the tightening device; the diameter of the spring in the natural state is larger than the outer diameter of the mandrel, and the diameter of the spring is smaller than or equal to the outer diameter of the mandrel after the spring is screwed by the screwing device. The utility model provides an assembly fixture of spring, it can be with the spring according to the pitch interference fit that presets to inside the hose to provide the support for the hose, this device is not only assembly efficiency high, and can reach better assembly effect.
Description
Technical Field
The utility model relates to the technical field of auxiliary tools, in particular to an assembly tool for assembling a spring in a hose.
Background
In the field of hydraulic drives, pneumatic drives, etc., hoses are generally used to transport the medium. Because the hose is insufficient in negative pressure resistance and bending resistance, the following situations easily occur during use: ① The pressure in the hose is less than the ambient pressure; ② The bending radius of the hose is too small; ③ The hose is twisted and wound. This results in a reduced cross-sectional area of the hose flow path, which affects hose passability.
Disclosure of utility model
In view of the foregoing deficiencies of the prior art, the present utility model provides an assembly fixture for assembling a spring in a hose for assisting in mounting the spring inside the hose to provide support for the hose.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
The assembly fixture comprises an assembly fixture, wherein the assembly fixture comprises a mandrel and a tightening device, and the mandrel is of a cylindrical structure; the center of the tightening device is provided with a unthreaded hole penetrating along the axial direction, the tightening device is sleeved on the outer wall of the mandrel and is movably connected with the mandrel, and the mandrel is in clearance fit with the unthreaded hole;
When in assembly, the spring is sleeved on the outer wall of the mandrel, and two ends of the spring are respectively fixed on the top end of the mandrel and the tightening device; the diameter of the spring in the natural state is larger than the outer diameter of the mandrel, and the diameter of the spring is smaller than or equal to the outer diameter of the mandrel after the spring is screwed by the screwing device.
The beneficial effects of the utility model are as follows: the device in this scheme can be with the spring interference fit to inside the hose, and the spring can provide good support for the hose, increases the negative pressure resistant and the anti crooked ability of hose, avoids producing negative pressure in the hose, takes place the circumstances such as distortion winding to influence the runner trafficability characteristic of hose.
The pulling tightening device can drive one end of the spring to move, and the spring is lengthened, so that the diameter of the spring is reduced, pretightening force is generated, the mandrel stretches into the hose, the tightening device is loosened, the outer diameter of the spring can be automatically expanded until the mandrel is tightly matched with the hose, the reliability and the compactness of connection are enhanced, and gaps or relative sliding between the spring and the hose are prevented, so that support failure is avoided.
Further, a spiral groove is formed on the surface of the cylinder surrounding the mandrel; each turn of the assembled spring is embedded in a helical groove.
The beneficial effects of the technical scheme are as follows: the spiral groove of the mandrel can enable the spring to be stressed and be arranged in the hose according to a preset pitch, so that the support is more uniform and the support effect is better. If the pitch of the springs is uneven after assembly, the hose cannot achieve the expected negative pressure resistance and bending resistance at the position with larger pitch of the springs, so that the supporting effect is poor.
Further, the end of the mandrel is provided with a straight groove for clamping the end part of the spring, and the end surface of the tightening device is provided with a mounting hole matched with the end part of the spring.
Further, the end of the mandrel is provided with a fixed table which is convenient to clamp. During operation, the fixing table of the mandrel is fixed by using the clamp, so that the assembly work is convenient to carry out.
Further, the length of the mandrel is longer than that of the hose, so that the hose is fully supported at every position inside the hose.
Further, the tightening device is of a hexagonal prism structure, and the cross section of the tightening device is of a regular hexagon structure. The appearance of the tightening device is the same as that of the outer hexagonal nut, and the tightening device can be adapted to a tool for tightening the outer hexagonal nut, so that the tightening device is more convenient to use.
Drawings
FIG. 1 is a schematic view of an assembly fixture for assembling a spring in a hose;
fig. 2 is a cross-sectional view of the spring assembled in the hose.
Wherein, 1, a spring; 2. a hose; 3. assembling a tool; 4. a mandrel; 5. a tightening device; 6. a mounting hole; 7. a fixed table.
Detailed Description
The following description of the embodiments of the present utility model is provided to facilitate understanding of the present utility model by those skilled in the art, but it should be understood that the present utility model is not limited to the scope of the embodiments, and all the utility models which make use of the inventive concept are protected by the spirit and scope of the present utility model as defined and defined in the appended claims to those skilled in the art.
As shown in fig. 1-2, the assembly fixture for assembling the spring in the hose comprises an assembly fixture 3, wherein the assembly fixture 3 comprises a mandrel 4 and a tightening device 5, and the mandrel 4 is of a cylindrical structure; the center of the tightening device 5 is provided with a unthreaded hole penetrating along the axial direction, the tightening device 5 is sleeved on the outer wall of the mandrel 4 and is movably connected with the mandrel 4, and the mandrel 4 is in clearance fit with the unthreaded hole. The tightening device 5 is preferably of a hexagonal prism structure, the cross section of the tightening device is of a regular hexagonal structure, the appearance of the tightening device 5 is identical to that of an outer hexagonal nut, and the tightening device can be adapted to a tool for tightening the outer hexagonal nut, so that the tightening device is more convenient to use.
During assembly, the spring 1 is sleeved on the outer wall of the mandrel 4, and two ends of the spring 1 are respectively fixed on the top end of the mandrel 4 and the tightening device 5; the diameter of the spring 1 in a natural state is larger than the outer diameter of the mandrel 4 and also larger than the inner diameter of the hose 2, and after the spring 1 is screwed by the screwing device 5, the diameter of the spring 1 is smaller than or equal to the outer diameter of the mandrel 4 and also smaller than the inner diameter of the hose 2. Since there is no gap between the spring and the hose 2, the spring can be ensured to be stably fixed inside the hose 2, so as to achieve a good supporting effect.
Under the natural state, when the envelope surface diameter of the spring 1 is greater than the inner diameter of the hose 2, the hose and the spring are difficult to assemble directly, the device of the scheme is matched, the tightening device 5 is rotated, the tightening device 5 slides along the mandrel 4, one end of the spring 1 can be driven to move, meanwhile, the spring 1 is lengthened and the diameter is reduced, so that the spring 1 generates pretightening force, the mandrel 4 stretches into the hose 2, the tightening device 5 is loosened, the outer diameter of the spring 1 can be automatically expanded until the spring is tightly matched with the hose 2, and radial interference fit of the spring 1 and the hose 2 is realized.
After the spring 1 is assembled in the hose 2, the hose 2 can be supported from the inside by utilizing the radial pressure resistance of the spring, so that the negative pressure resistance and bending resistance of the hose 2 are improved, and the conditions of negative pressure, twisting and winding and the like in the hose 2 are avoided to influence the flow passage of the hose 2. In the implementation of the utility model, it is preferable to provide a spiral groove on the surface of the cylinder surrounding the mandrel 4; each turn of the assembled spring 1 is embedded in a spiral groove. When the tightening device 5 rotates, the spring 1 can be screwed into the spiral groove on the surface of the mandrel 4 along the spiral direction of the spring, so that the purpose of adjusting the installation pitch of the spring is achieved. The spiral groove of the mandrel 4 can stress the spring and load the spring into the hose 2 according to a preset pitch, so that the support is more uniform and the support effect is better. If the pitch of the springs is uneven after assembly, the expected negative pressure resistance and bending resistance can not be achieved at the position with larger pitch of the springs, so that the supporting effect is poor.
Referring again to fig. 1, a linear groove is preferably formed in the end of the mandrel 4, and a mounting hole 6 is formed in the end face of the tightening device 5; both ends of the spring 1 are respectively fixed in the straight groove and the mounting hole 6. The end of the mandrel 4 is provided with a fixing table 7 for facilitating clamping. The fixed station 7 of dabber 4 uses anchor clamps fixed during operation, is convenient for carry out of assembly work. The fixed table 7 of the mandrel 4 is preferably held by a pair of bench clamps to avoid the mandrel 4 from moving randomly. The length of the mandrel 4 is required to be longer than that of the hose 2, so that the inside of the hose 2 is ensured to be supported everywhere.
The working steps of the utility model are as follows:
s1, sleeving a tightening device 5 and a spring 1 on a mandrel 4 respectively;
S2, respectively fixing two ends of the spring 1 in a straight groove of the mandrel 4 and a mounting hole 6 of the tightening device 5;
S3, rotating and pulling the tightening device 5, embedding each circle of the spring 1 into the spiral groove, and shrinking the outer diameter of the spring 1 to be smaller than the inner diameter of the hose 2;
S4, the assembly fixture 3 and the spring 1 are assembled into the hose 2, the tightening device 5 is loosened after the assembly fixture is assembled, and the spring 1 is gradually expanded until the spring is tightly matched with the hose 2;
s5, cutting off redundant materials at two ends of the spring 1, and taking out the assembly fixture 3.
To sum up, this scheme provides an assembly fixture 3 of spring 1, and it can be with spring 1 according to the inside of presetting the pitch interference fit hose 2 to provide the support for hose 2, this device is not only assembly efficiency high, and can reach better assembly effect.
Claims (6)
1. A assembly fixture for assembling spring in hose, its characterized in that: the device comprises a mandrel (4) and a tightening device (5), wherein the mandrel (4) is of a cylindrical structure; the center of the tightening device (5) is provided with a unthreaded hole penetrating along the axial direction, the tightening device (5) is sleeved on the outer wall of the mandrel (4) and is movably connected with the mandrel (4), and the mandrel (4) is in clearance fit with the unthreaded hole;
During assembly, the spring (1) is sleeved on the outer wall of the mandrel (4), and two ends of the spring (1) are respectively fixed on the top end of the mandrel (4) and the tightening device (5); the diameter of the spring (1) in a natural state is larger than the outer diameter of the mandrel (4), and after the spring (1) is screwed by the screwing device (5), the diameter of the spring (1) is smaller than or equal to the outer diameter of the mandrel (4).
2. The assembly fixture for assembling a spring in a hose according to claim 1, wherein: the outer surface of the mandrel (4) is provided with a spiral groove; each turn of the spring (1) is embedded in said helical groove when assembled.
3. The assembly fixture for assembling a spring in a hose according to claim 1, wherein: the end of the mandrel (4) is provided with a straight groove for clamping the end part of the spring, and the end surface of the tightening device (5) is provided with a mounting hole (6) matched with the end part of the spring.
4. The assembly fixture for assembling a spring in a hose according to claim 1, wherein: the tail end of the mandrel (4) is provided with a fixing table (7) which is convenient to clamp.
5. The assembly fixture for assembling a spring in a hose according to claim 1, wherein: the length of the mandrel (4) is longer than the length of the hose (2).
6. The assembly fixture for assembling a spring in a hose according to claim 1, wherein: the tightening device (5) is of a hexagonal prism structure, and the cross section of the tightening device is of a regular hexagon structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322614835.3U CN220863896U (en) | 2023-09-25 | 2023-09-25 | Assembling tool for assembling spring in hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322614835.3U CN220863896U (en) | 2023-09-25 | 2023-09-25 | Assembling tool for assembling spring in hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220863896U true CN220863896U (en) | 2024-04-30 |
Family
ID=90812052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322614835.3U Active CN220863896U (en) | 2023-09-25 | 2023-09-25 | Assembling tool for assembling spring in hose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220863896U (en) |
-
2023
- 2023-09-25 CN CN202322614835.3U patent/CN220863896U/en active Active
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