CN218261753U - Automatic tensioning device - Google Patents
Automatic tensioning device Download PDFInfo
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- CN218261753U CN218261753U CN202222633343.4U CN202222633343U CN218261753U CN 218261753 U CN218261753 U CN 218261753U CN 202222633343 U CN202222633343 U CN 202222633343U CN 218261753 U CN218261753 U CN 218261753U
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- locking plate
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- locking
- counter bore
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Abstract
The application relates to an automatic tensioning device, wherein a device main body is provided with a first through hole, a first counter bore, a second counter bore and a third counter bore; a locking plate is arranged in the first counter bore and is provided with a first end and a second end, the first end is connected with the second counter bore of the device main body, the second end is connected with a locking plate spring, a spring pressing plate is arranged at one end of the locking plate spring, which is far away from the locking plate, and one end part of the locking plate spring is embedded in the spring pressing plate; the device main part breaks away from the lateral surface of locking plate for the lateral surface and the device main part of locking plate have the clearance, simultaneously because fixed spring clamp plate removes and then compresses the locking plate spring to the one side that is close to the locking plate spring, and the power of locking plate spring is applyed in the second counter bore, and the axial of locking plate spring and radial power make the second counter bore at locking plate place open the locking plate, thereby open the steel strand wires. The device can realize the automatic clamping and opening effects on the steel strand, reduce the labor intensity of workers and improve the efficiency.
Description
Technical Field
The application relates to the technical field of prestress tensioning of machining, in particular to an automatic tensioning device.
Background
With the continuous development of social progress and economy, higher requirements are provided for the operation strength and efficiency of workers during prestress tensioning, and the problems that the workers are difficult to operate, low in efficiency, high in strength and difficult to thread steel strands for steel strand threading actions of a jack before general prestress tensioning are solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the requirement for operating strength and efficiency of workers is high when the prestress is tensioned, and provides an automatic tensioning device.
In order to achieve the above purpose, the present application provides the following technical solutions:
an automatic tensioning device comprising: a device main body; the device main body is provided with a first through hole, a first counter bore, a second counter bore and a third counter bore; a locking plate is arranged in the first counter bore and provided with a first end and a second end, the first end is placed in the second counter bore of the device main body, the second end is connected with a locking plate spring, a spring pressing plate is arranged at one end, far away from the locking plate, of the locking plate spring, and one end part of the locking plate spring is embedded in the spring pressing plate; through the opening and closing action of the locking plate, the steel strand is clamped or opened: the device main part is followed the lateral surface of locking plate breaks away from, makes the lateral surface of locking plate with the device main part has the clearance, simultaneously because fixed spring clamp plate is to being close to one side removal and then compression locking plate spring of locking plate spring, the power of locking plate spring is applyed in the second counter bore, the axial of locking plate spring and radial power make the second counter bore at locking plate place open the locking plate to open the steel strand wires.
Furthermore, a locking plate positioning plate and a guide sleeve limiting plate are arranged on two opposite sides of the device main body, and a guide sleeve fixing plate is arranged on one side, away from the device main body, of the guide sleeve limiting plate; the locking plate positioning plate, the guide sleeve limiting plate and the guide sleeve fixing plate are fixed through a guide shaft, and the guide shaft penetrates through the locking plate positioning plate, the first through hole of the device main body and the guide sleeve limiting plate and is fixed on the guide sleeve fixing plate; the one end that the guiding axle kept away from the locking plate locating plate is equipped with the locating part, in order to right the locking plate locating plate is spacing for the distance between locking plate locating plate and the uide bushing limiting plate is fixed unchangeable.
Furthermore, one end of the spring pressure plate is provided with a second through hole, and the second through hole is coaxially arranged with the guide shaft; the other end of the spring pressing plate is connected with the third counter bore of the device main body through a fixing bolt, and the fixing bolt penetrates through the locking plate positioning plate.
Further, the limiting part is a nut, a step or a protrusion.
Furthermore, the guide sleeve fixing plate is fixed on the guide sleeve limiting plate through a screw.
Further, the device main part with be equipped with the steel strand wires uide bushing between the uide bushing limiting plate, have the fourth counter bore on the uide bushing fixed plate, the steel strand wires uide bushing is installed in the fourth counter bore on the uide bushing fixed plate to penetrate in the device main part in the third counter bore.
Further, the cross section of the first end of the locking plate is larger than that of the second end, and the cross section of the locking plate gradually decreases from the first end to the second end.
Furthermore, the device main part passes through the guiding axle and slides between locking plate locating plate and uide bushing limiting plate.
Furthermore, the spring pressing plate and the locking plate positioning plate slide on the fixing bolt.
The beneficial effect of this application lies in: the device main body is provided with a first through hole, a first counter bore, a second counter bore and a third counter bore; a locking plate is arranged in the first counter bore and provided with a first end and a second end, the first end is connected with the second counter bore of the device main body, the second end is connected with a locking plate spring, a spring pressing plate is arranged at one end, away from the locking plate, of the locking plate spring, and one end part of the locking plate spring is embedded in the spring pressing plate; the locking plate clamps or opens the steel strand through the action of opening and closing. This device is before wearing the steel strand wires and when moving back the steel strand wires, the locking plate all is in not hard up state, through the effect of the internal and external jar of jack, the locking plate spring is exerted oneself in locking plate counter bore terminal surface to strut the locking plate hole, let the locking plate receive and let the locking plate be in the state of opening under axial and radial dual action power, make things convenient for the steel strand wires to wear into the jack and pull out the jack from the steel strand wires, and then realize steel strand wires self-holding, open effect, greatly reduced workman's intensity of labour has improved efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are merely for more clearly illustrating the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments or the technical solutions in the prior art are briefly introduced below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic overall structural diagram of an automatic tensioning device provided in the present application;
fig. 2 is a side view schematic diagram of an automatic tensioning device provided in the present application;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a top view of a locking tab provided herein;
fig. 5 is a sectional view of the automatic tensioning device of the present application installed in a jack in a use configuration.
Detailed Description
The inventor of the application finds that: the jack is difficult to pull out when withdrawing from the steel strand after tensioning, and the device is arranged in the jack, can realize the action of relatively relaxing back jack and top threading, and the general device can not open automatically because the tool locking plate is tight, so the device is easy to clamp on the inner teeth of the tool locking plate when threading the steel strand and withdrawing the steel strand, resulting in back jack and top threading difficulty.
An automatic tensioning device 100, as shown in fig. 1-4, includes: spring plate 1, spring plate gim peg 2, locking plate locating plate 3, locking plate 4, locking plate spring 5, device main part 6, steel strand wires uide bushing 7, uide bushing limiting plate 8, uide bushing fixed plate 9, guiding axle 10 and locating part 11, steel strand wires 12 can run through spring plate 1 in proper order, locking plate spring 5, locking plate locating plate 3, locking plate 4, device main part 6, steel strand wires uide bushing 7, uide bushing limiting plate 8 and uide bushing fixed plate 9. The device body 6 may be an anchor.
As shown in fig. 3, the device body 6 has a first through hole 61, a first counterbore 62, a second counterbore 63, and a third counterbore 64. In this embodiment, the first counterbore 62 is a tapered bore and the third counterbore 64 is a threaded counterbore, such that the spring platen securement stud 2 may be threaded into the third counterbore 64.
Specifically, guiding axle 10 sets up in first through-hole 61, and guiding axle 10 runs through locking plate locating plate 3, and the through-hole of locking plate locating plate 3 is less than the external diameter of guiding axle 10 for guiding axle 10 can with locking plate locating plate 3 relatively fixed, can not take place the displacement. A locking plate 4 is arranged in the first counter bore 62, as shown in fig. 4, the locking plate 4 has a first end 41 and a second end 42, the first end 41 is placed in a second counter bore 63 of the device main body 6 and can move relative to the second counter bore 63, the second end 42 is connected with a locking plate spring 5, a spring pressing plate 1 is arranged at one end of the locking plate spring 5 away from the locking plate 4, and one end of the locking plate spring 5 is partially embedded in the spring pressing plate 1, so that the spring pressing plate 1 can fix one end of the locking plate spring 5; meanwhile, since the device body 6 is fixed to the outer cylinder 200, the outer cylinder 200 moves to a side close to the inner cylinder 300, so that the spring pressing plate 1 moves to a side close to the locking plate spring 5, and the locking plate spring 5 can be compressed. In a similar way, the outer cylinder 200 moves towards one side far away from the inner cylinder 300, so that the spring pressing plate 1 moves towards one side far away from the locking plate spring 5, and the locking plate spring 5 can be stretched, and therefore the locking plate 4 clamps or opens the steel strand 12 through the opening and closing action.
The opposite sides of the device main body 6 are provided with a locking plate positioning plate 3 and a guide sleeve limiting plate 8, and one side of the guide sleeve limiting plate 8 away from the device main body 6 is provided with a guide sleeve fixing plate 9. The device body 6 slides between the lock plate positioning plate 3 and the guide bush positioning plate 8 through the guide shaft 10. When the device body 6 slides to one end close to the locking plate 4, the locking plate 4 can be clamped, so that the locking plate 4 clamps the steel strand. When the device body 6 is slid away from the second end 42 of the locking tab 4, the locking tab 4 can be opened under the pressure of the locking tab spring 5, so that the locking tab 4 releases the steel strand 12.
The cross section of the first end 41 of the locking plate 4 is larger than that of the second end 42, and the cross section of the locking plate 4 gradually decreases from the first end 41 to the second end 42, so that the locking plate 4 is clamped when the device body 6 is close to the locking plate 4, and the locking plate 4 is loosened when the device body is far away from the locking plate 4. The outer side wall of the locking plate 4 is a conical surface. An inner hole can be formed between the two locking teeth of the locking plate 4, and the locking teeth can be in a sawtooth shape, so that the clamping acting force on the steel strand 12 is improved.
The locking plate positioning plate 3, the guide sleeve limiting plate 8 and the guide sleeve fixing plate 9 are fixed through a guide shaft 10, and the guide shaft 10 penetrates through the locking plate positioning plate 3, the first through hole 61 of the device main body 6 and the guide sleeve limiting plate 8 and is fixed on the guide sleeve fixing plate 9; one end of the guide shaft 10, which is far away from the locking plate positioning plate 3, is provided with a limiting part 11 to limit the locking plate positioning plate 3, so that the distance between the locking plate positioning plate 3 and the guide sleeve limiting plate 8 is fixed and unchanged, and the device body 6 can slide between the fixed distances of the locking plate positioning plate 3 and the guide sleeve limiting plate 8. Specifically, the guide sleeve fixing plate 9 is fixed on the guide sleeve limiting plate 8 through a screw.
In a specific embodiment, the limiting member 11 may be a nut, a step, or a protrusion, which can be selected as needed, and the application is not limited thereto.
One end of the spring pressing plate 1 is provided with a second through hole 101, and the second through hole 101 is coaxially arranged with the guide shaft 10; the other end of the spring pressing plate 1 is connected with a third counter bore 64 of the device main body 6 through a fixing bolt 2, and the fixing bolt 2 penetrates through the locking plate positioning plate 3. The spring pressing plate 1 and the locking plate positioning plate 3 slide on the fixing bolt 2, so that the spring pressing plate 1 can compress or release the locking plate spring 5.
A steel strand guide sleeve 7 is arranged between the device main body 6 and the guide sleeve limiting plate 8, a fourth counter bore (not shown) is formed in the guide sleeve fixing plate 9, and the steel strand guide sleeve 7 is installed in the fourth counter bore in the guide sleeve fixing plate 9 and penetrates into a second counter bore 63 in the device main body 6.
The action process when the steel strand 12 is penetrated is as follows:
wear before 12 steel strand wires, the jack is in the withdrawal state, the inner casing 300 and the outer casing 200 of jack can act on uide bushing limiting plate 8 and device main part 6 respectively this moment, because of the jack is in the withdrawal state, consequently, the inner casing 300, outer casing 200 acts on down, the shortest to pasting closely each other of distance between uide bushing limiting plate 8 and the device main part 6, device main part 6 removes to the direction that is close to uide bushing limiting plate 8 promptly, lead to removing to the direction that is close to device main part 6 through the fixed spring plate 1 that gim peg 2 is fixed, and then compression locking plate spring 5. The outer conical surface of locking plate 4 and device main part 6 have had the clearance, at this moment because the effort of compression locking plate spring 5 is applyed in the second counter bore 63 at locking plate 4 place, axial and radial power make locking plate 4 open, the hole of locking plate 4 is big than steel strand wires 12's size, also big than steel strand wires uide bushing 7 hole, consequently, steel strand wires 12 get into locking plate 4 and wear out just easier after through steel strand wires uide bushing 7, do not receive the hindrance of locking plate 4 hole tooth, it is easier to make to wear steel strand wires 12.
As shown in fig. 1 to 5, the automatic clamping action of the steel strand is described as follows:
at the inner casing 300 of jack, under the action of outer casing 200, inner casing 300, the one end of outer casing 200 can be kept away from each other, can drive device main part 6 and move to the direction of keeping away from inner casing 300, there is the pawl in the 4 holes of locking plate, make locking plate 4 and steel strand wires 12 carry, and device main part 6 moves toward the direction of keeping away from inner casing 300 more, locking plate 4 is tight clamp tightly more on steel strand wires 12, when locking plate 4 interlock is on the locking plate, device main part 6 continues the direction motion to keeping away from inner casing 300, can drive locking plate 4 and then drive steel strand wires 12 and move to the direction of keeping away from inner casing 300, realize the tensile action to steel strand wires 12.
As shown in fig. 1 to 5, after tensioning is finished, the steel strand 12 is automatically opened, and then the action of withdrawing the steel strand 12 is described as follows:
after the steel strand 12 is stretched, the inner cylinder 300 and the outer cylinder 200 of the jack retract, that is, the same ends of the inner cylinder 300 and the outer cylinder 200 are closer and closer, until the inner cylinder 300 and the outer cylinder 200 of the jack act on the guide sleeve limiting plate 8 and the device main body 6 respectively, and then the inner cylinder 300 and the outer cylinder 200 continue to retract, so that the distance between the guide sleeve limiting plate 8 and the device main body 6 is closer and closer. Device main part 6 breaks away from the outer conical surface of locking plate 4, the outer conical surface of locking plate 4 and device main part 6 have had the clearance this moment, simultaneously because fixed spring clamp plate 1 also removes and then compresses locking plate spring 5 to the direction that is close to uide bushing limiting plate 8, locking plate spring 5's effort is applyed in the counter bore of locking plate 4, axial and radial power make locking plate 4 hole open, the hole is big than steel strand wires 12's size, it is big also than steel strand wires uide bushing 7 hole size, consequently, it is just easier to extract this device from steel strand wires 12, do not receive the hindrance of locking plate 4 hole tooth, and this device is fixed on the jack again, consequently and solve the jack and move back the difficult problem of steel strand wires.
Not described in detail in this application is prior art.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. An automatic tensioning device, comprising: a device main body;
the device main body is provided with a first through hole, a first counter bore, a second counter bore and a third counter bore;
a locking plate is arranged in the first counter bore and provided with a first end and a second end, the first end is placed in the second counter bore of the device main body, the second end is connected with a locking plate spring, a spring pressing plate is arranged at one end, far away from the locking plate, of the locking plate spring, and one end part of the locking plate spring is embedded in the spring pressing plate; through the opening and closing action of the locking plate, the steel strand is clamped or opened: the device main part is followed the lateral surface of locking plate breaks away from, makes the lateral surface of locking plate with the device main part has the clearance, simultaneously because fixed spring plate is to being close to one side of locking plate spring is removed and then is compressed the locking plate spring, the power of locking plate spring is exerted in the second counter bore, the axial and the radial power of locking plate spring make the locking plate open the locking plate to open the steel strand wires.
2. The automatic tensioning device according to claim 1, wherein a locking plate positioning plate and a guide sleeve limiting plate are arranged on two opposite sides of the device body, and a guide sleeve fixing plate is arranged on one side of the guide sleeve limiting plate away from the device body;
the locking plate positioning plate, the guide sleeve limiting plate and the guide sleeve fixing plate are fixed through a guide shaft, and the guide shaft penetrates through the locking plate positioning plate, the first through hole of the device main body and the guide sleeve limiting plate and is fixed on the guide sleeve fixing plate; the guiding axle is kept away from the one end of locking plate locating plate is equipped with the locating part, and is right it is spacing that the locking plate locating plate carries out for the distance between locking plate locating plate and the uide bushing limiting plate is fixed unchangeable.
3. The automatic tensioning device according to claim 2, wherein one end of the spring pressing plate is provided with a second through hole, and the second through hole is coaxially arranged with the guide shaft;
the other end of the spring pressing plate is connected with the third counter bore of the device main body through a fixing bolt, and the fixing bolt penetrates through the locking plate positioning plate.
4. The automatic tensioning device according to claim 2, wherein the stop is a nut, a step or a protrusion.
5. The automatic tensioning device according to claim 2, wherein the guide sleeve fixing plate is fixed on the guide sleeve limiting plate through a screw.
6. The automatic tensioning device according to claim 2, wherein a steel strand guide sleeve is arranged between the device body and the guide sleeve limiting plate, a fourth counter bore is formed in the guide sleeve fixing plate, and the steel strand guide sleeve is mounted in the fourth counter bore in the guide sleeve fixing plate and penetrates into the third counter bore in the device body.
7. An automatic tensioning device according to any one of claims 1 to 5 wherein the cross-section of the first end of the locking tab is greater than the cross-section of the second end and the cross-section of the locking tab decreases progressively from the first end to the second end.
8. The automatic tensioning device according to claim 2, wherein the device body slides between the lock plate positioning plate and the guide bush positioning plate by the guide shaft.
9. An automatic tensioning device according to claim 3 wherein the spring clip and locking tab locating plate slide on the securing latch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222633343.4U CN218261753U (en) | 2022-10-08 | 2022-10-08 | Automatic tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222633343.4U CN218261753U (en) | 2022-10-08 | 2022-10-08 | Automatic tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218261753U true CN218261753U (en) | 2023-01-10 |
Family
ID=84749965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222633343.4U Active CN218261753U (en) | 2022-10-08 | 2022-10-08 | Automatic tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218261753U (en) |
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2022
- 2022-10-08 CN CN202222633343.4U patent/CN218261753U/en active Active
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