CN221271030U - Expansion and contraction tool - Google Patents
Expansion and contraction tool Download PDFInfo
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- CN221271030U CN221271030U CN202323024712.0U CN202323024712U CN221271030U CN 221271030 U CN221271030 U CN 221271030U CN 202323024712 U CN202323024712 U CN 202323024712U CN 221271030 U CN221271030 U CN 221271030U
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- connecting rod
- contraction
- expansion
- supporting plate
- disc
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Abstract
The utility model discloses an expansion and contraction tool which comprises a main shaft, a fixed disc, a movable disc and a contraction and folding mechanism, wherein the main shaft comprises a smooth section and a screw rod section, the fixed disc is arranged on the smooth section of the main shaft, the movable disc is in threaded connection with the screw rod section, one end of the contraction and folding mechanism is rotationally connected with the fixed disc, and the other end of the contraction and folding mechanism is rotationally connected with the movable disc. The contraction folding mechanism is a hinge structure consisting of a first supporting plate, a second supporting plate and a first connecting rod. The fixed disk and the movable disk are provided with rotating shafts, the first support plate is connected with the rotating shafts on the fixed disk, and the second support plate is connected with the rotating shafts on the movable disk. When the main shaft is rotated, the moving disc axially moves to drive the first support plate and the second support plate to fold or unfold, so that the first connecting rod radially moves. One end of the first connecting rod is arranged on the second connecting rod, and the first connecting rod and the second connecting rod are both provided with clamping claws.
Description
Technical Field
The utility model belongs to the technical field of electric heater installation auxiliary tools, and particularly relates to an expansion and contraction tool.
Background
The tubular electric heater consists of an electric heating tube and an outer sleeve, and the electric heating tube is inserted into the outer sleeve after being assembled. The electric heating pipe heats after being electrified, and transmits the heat to the outer sleeve pipe to heat other objects. The electric heating pipe is a slender pipe fitting, the slender pipe fitting is relatively large, and due to the fact that the electric heating pipe has the degree of winding, the electric heating pipe and the outer sleeve can not be tightly attached, heat transfer is not smooth, and the tail end of the electric heating pipe is particularly obvious. For the electric heater with smaller diameter, the inner space is relatively narrow during installation, and the electric heating pipe is difficult to operate so as to be attached to the inner wall of the outer sleeve.
In view of the above problems, an expansion and contraction tool is now proposed.
Disclosure of utility model
In order to solve the above problems, the present utility model provides an expansion and contraction tool, which aims at the problem that the expansion and contraction tool cannot be attached to the inner wall of an outer sleeve when an electric heating pipe of a tubular heater is installed.
The embodiment of the utility model is realized by the following technical scheme:
The expansion and contraction tool comprises a main shaft, a fixed disc, a movable disc and a contraction and folding mechanism, wherein the main shaft comprises a smooth section and a screw rod section, the fixed disc is arranged on the smooth section of the main shaft, the movable disc is in threaded connection with the screw rod section, one end of the contraction and folding mechanism is rotationally connected with the fixed disc, and the other end of the contraction and folding mechanism is rotationally connected with the movable disc.
In an embodiment of the utility model, the shrink folding mechanism includes a first support plate, a second support plate and a first connecting rod, one ends of the first support plate and the second support plate are both rotatably connected with the first connecting rod, the first support plate and the second support plate are located in the same vertical plane, the other end of the first support plate is rotatably connected with the fixed disc, and the other end of the second support plate is rotatably connected with the movable disc.
In an embodiment of the present utility model, the fixed disc and the movable disc are provided with rotating shafts, the first support plate is rotatably connected with the rotating shaft on the fixed disc, and the second support plate is rotatably connected with the rotating shaft on the movable disc.
In an embodiment of the present utility model, at least two rotating shafts and at least two shrink folding mechanisms are provided, and the rotating shafts and the shrink folding mechanisms are uniformly distributed along a circumference with the spindle as an axis.
In an embodiment of the utility model, the device further comprises a second connecting rod, wherein a counter bore is formed in one end of the first connecting rod, the second connecting rod is inserted into the first connecting rod through the tangible counter bore, a spring is installed in the first connecting rod, one end of the spring is connected with the inner wall of the counter bore of the first connecting rod, and the other end of the spring is connected with the second connecting rod.
In an embodiment of the utility model, a claw is fixedly installed at one end of the first connecting rod, and a claw is fixedly installed at one end of the second connecting rod located outside the first connecting rod.
In one embodiment of the utility model, one side of the fixed disc is provided with a lower limiting ring, and the other side is provided with an upper limiting ring for limiting the axial movement of the fixed disc.
In an embodiment of the utility model, a transmission member is arranged at one end of the spindle light ring section, and a rotating chain is arranged on the transmission member and is used for being connected with an external power source.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
according to the utility model, the claw is clamped on the electric heating tube to drive the main shaft to rotate, so that the movable disc axially moves along the main shaft. Because all be the rotation connection between first backup pad and the second backup pad, between first backup pad and the fixed disk, between second backup pad and the movable disk, when the movable disk takes place axial displacement, first backup pad and second backup pad can synchronous motion, make shrink beta structure expansion or shrink, make head rod and second connecting rod radial movement, support electrothermal tube and the laminating of outer tube inner wall.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic elevational view of the present utility model;
FIG. 2 is a schematic elevational view of the present utility model after rotation about a spindle;
FIG. 3 is a schematic perspective view of the present utility model;
Fig. 4 is a right-side view of the present utility model.
Icon: the device comprises a main shaft 1, a fixed disc 2, a rotating shaft 3, a first connecting rod 4, a second connecting rod 5, a claw 6, a moving disc 7, a first supporting plate 8, a second supporting plate 9, a transmission piece 10, a lower limiting ring 11, an upper limiting ring 12 and a transmission chain 13.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, if the azimuth or positional relationship indicated by the terms "inner", "outer", etc. appears to be based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "configured," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-4, the present embodiment provides an expansion and contraction tool.
In the present embodiment, the expansion and contraction tool includes a spindle 1, a moving tray 7, a fixed tray 2, and a contraction folding mechanism. The main shaft 1 is divided into two sections, one section is a smooth section and the other section is a threaded section. The fixed disk 2 is mounted on the smooth section near the thread section, and the fixed disk 2 can rotate relative to the spindle 1. The movable disk 7 is mounted on the threaded section and is in threaded connection with the spindle 1. One end of the telescopic folding mechanism is connected with the movable disc 7, and the other end is connected with the fixed disc 2. The shrink-folding mechanism folds or unfolds synchronously when the moving disk 7 moves axially along the spindle 1.
In the present embodiment, the shrink-folding mechanism includes a first support plate 8, a second support plate 9, and a first connecting rod 4. One ends of the first supporting plate 8 and the second supporting plate 9 are both connected with the first connecting rod 4 in a rotating way, and the first supporting plate 8 and the second supporting plate 9 are positioned in the same vertical plane. The first support plate 8, the second support plate 9 and the first connecting rod 4 constitute a hinge structure. The rotating shafts 3 are arranged on the movable disc 7 and the fixed disc 2, the other end of the first supporting plate 8 is rotationally connected with the rotating shaft 3 on the fixed disc 2, and the other end of the second supporting plate 9 is rotationally connected with the rotating shaft 3 on the movable disc 7. When the spindle 1 rotates, the fixed disk 2 remains in an axial position, and the movable disk 7 moves axially. When the movable disc 7 moves towards the fixed disc 2, the included angle between the first support plate 8 and the second support plate 9 becomes smaller, and the shrinkage folding mechanism starts to fold; when the movable tray 7 is away from the fixed tray 2, the angle between the first support plate 8 and the second support plate 9 becomes large, and the shrink-folding mechanism is unfolded. The rotating shaft 3 and the shrinkage folding mechanism are at least two, and a main shaft 1 is used as an axle center and is uniformly distributed along the circumference. In this embodiment, the rotation shafts 3 and the shrink folding mechanism are provided in three, uniformly distributed along the circumference, and 60 ° intervals are provided between each rotation shaft 3.
In this embodiment, the expansion and contraction tool further comprises a second connecting rod 5. One end of the first connecting rod 4 is provided with a counter bore, the second connecting rod 5 is inserted into the first connecting rod 4 through the counter bore, the second connecting rod 5 can slide relative to the first connecting rod 4, a spring is arranged in the counter bore, one end of the spring is fixedly connected with the inner wall of the counter bore, and the other end of the spring is fixedly connected with the second connecting rod 5. The above-mentioned manner makes the first connecting rod 4 and the second connecting rod 5 constitute an elastic telescopic rod. The clamping jaw 6 is fixedly arranged at one end of the first connecting rod 4, which is not provided with a counter bore, and the clamping jaw 6 is fixedly arranged at one end of the second connecting rod 5, which is positioned outside the first connecting rod 4. The claw 6 is of a semicircular structure and is used for being clamped on the electric heating pipe.
In this embodiment, a transmission member 10 is disposed at one end of the smooth section of the spindle 1, the transmission member 10 is used for being connected with a transmission chain 13, the transmission chain 13 is connected with an external power source, and power is transmitted through the transmission member 10 and the transmission chain 13 to drive the spindle 1 to rotate. In order to avoid the axial movement of the fixed disc 2, an upper limit ring 12 and a lower limit ring 11 are arranged on two sides of the fixed disc 2. The upper limit ring 12 and the lower limit ring 11 are fixedly arranged on the main shaft 1.
The working process comprises the following steps: the utility model is used for attaching the electric heating pipe of the tubular electric heater to the inner wall of the outer sleeve, and generally, the electric heating pipe used by the tubular electric heater is a U-shaped pipe. Before the expanding and contracting tool is used, the contracting and folding mechanism is required to be expanded, the first supporting plate 8 and the second supporting plate 9 are close to the main shaft 1, and then the first supporting plate and the second supporting plate extend into a gap formed by three U-shaped structures. And then the second connecting rod 5 is pressed, so that the second connection is retracted into the first connecting rod 4, and the distance between the first connecting rod 4 and the claw 6 on the second connecting rod 5 is smaller than the distance between the vertical sections of the U-shaped pipe. And then the main shaft 1 is rotated to enable the shrinkage folding mechanism to shrink, the included angle between the first supporting plate 8 and the second supporting plate 9 is reduced, the first connecting rod 4 and the second connecting rod 5 move outwards in the radial direction, when the first connecting rod 4 and the second connecting rod 5 are positioned between the vertical sections of the U-shaped pipes, the second connecting rod 5 is loosened, and under the action of a spring, the second connecting rod 5 stretches out to enable the clamping claws 6 to be clamped on the vertical sections of the U-shaped pipes. The U-tube and the expansion and contraction tool are then fed together into the outer sleeve. And then the main shaft 1 is rotated to enable the shrinkage folding mechanism to continue shrinkage folding, the first connecting rod 4 and the second connecting rod 5 continue to move radially outwards, and the supporting U-shaped tube is attached to the inner wall of the outer sleeve. After the U-shaped pipe is fixed, the main shaft 1 is rotated in the opposite direction to enable the contraction folding mechanism to contract, the clamping jaws 6 are separated from the U-shaped pipe, and when the expansion and contraction tool can be taken out from the electric heater, rotation is stopped, and the expansion and contraction tool is taken out.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The expansion and contraction tool is characterized by comprising a main shaft, a fixed disc, a movable disc and a contraction and folding mechanism, wherein the main shaft comprises a smooth section and a screw rod section, the fixed disc is arranged on the smooth section of the main shaft, the movable disc is in threaded connection with the screw rod section, one end of the contraction and folding mechanism is rotationally connected with the fixed disc, and the other end of the contraction and folding mechanism is rotationally connected with the movable disc.
2. The expansion and contraction tool according to claim 1, wherein,
The shrinkage folding mechanism comprises a first supporting plate, a second supporting plate and a first connecting rod, one ends of the first supporting plate and the second supporting plate are rotationally connected with the first connecting rod, the first supporting plate and the second supporting plate are located in the same vertical plane, the other end of the first supporting plate is rotationally connected with a fixed disc, and the other end of the second supporting plate is rotationally connected with a movable disc.
3. The expansion and contraction tool according to claim 2, wherein,
The fixed disk and the movable disk are provided with rotating shafts, the first support plate is rotationally connected with the rotating shafts on the fixed disk, and the second support plate is rotationally connected with the rotating shafts on the movable disk.
4. The expansion and contraction tool according to claim 3,
The rotating shaft and the shrinkage folding mechanism are at least two and are uniformly distributed along the circumference by taking the main shaft as the axis.
5. The expansion and contraction tool according to claim 4, wherein,
The connecting rod comprises a first connecting rod, and is characterized by further comprising a second connecting rod, wherein a counter bore is formed in one end of the first connecting rod, the second connecting rod is inserted into the first connecting rod through a tangible counter bore, a spring is installed in the first connecting rod, one end of the spring is connected with the inner wall of the counter bore of the first connecting rod, and the other end of the spring is connected with the second connecting rod.
6. The expansion and contraction tool according to claim 5, wherein,
The clamping jaw is fixedly arranged at one end of the first connecting rod, and the clamping jaw is fixedly arranged at one end of the second connecting rod, which is positioned outside the first connecting rod.
7. The expansion and contraction tool according to claim 1, wherein,
One side of the fixed disc is provided with a lower limiting ring, and the other side of the fixed disc is provided with an upper limiting ring for limiting the axial movement of the fixed disc.
8. The expansion and contraction tool according to claim 1, wherein,
One end of the spindle halo section is provided with a transmission part, and a rotating chain is arranged on the transmission part and used for being connected with an external power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323024712.0U CN221271030U (en) | 2023-11-08 | 2023-11-08 | Expansion and contraction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323024712.0U CN221271030U (en) | 2023-11-08 | 2023-11-08 | Expansion and contraction tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221271030U true CN221271030U (en) | 2024-07-05 |
Family
ID=91708459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323024712.0U Active CN221271030U (en) | 2023-11-08 | 2023-11-08 | Expansion and contraction tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221271030U (en) |
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2023
- 2023-11-08 CN CN202323024712.0U patent/CN221271030U/en active Active
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