CN210308400U - Sheet placing device - Google Patents
Sheet placing device Download PDFInfo
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- CN210308400U CN210308400U CN201920677472.9U CN201920677472U CN210308400U CN 210308400 U CN210308400 U CN 210308400U CN 201920677472 U CN201920677472 U CN 201920677472U CN 210308400 U CN210308400 U CN 210308400U
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Abstract
The utility model discloses a put a device, it belongs to track traffic infrastructure construction technical field, include: the tensioning rod is provided with a first end and a second end, the first end is an operation end, and the first end can be connected with an operation piece to be tensioned; the second end is connected with a driving device, and the tensioning rod can be driven to rotate by the driving device; a first thread is arranged on the tension rod along the direction from the first end to the second end; the guide seat is internally provided with an inner cavity with two through ends, the tension rod penetrates through the inner cavity, at least part of the inner cavity wall of the inner cavity is provided with second threads, and the second threads are in threaded connection with the first threads; after the tension rod is separated from the steel bar, the first thread of the tension rod is in threaded connection with the backspacing nut, so that the tension rod can be continuously retracted to the outside of the inner side surface of the die, manual secondary adjustment of the tension rod is avoided, automation of tension releasing action is achieved, production efficiency is improved, and production cost is reduced.
Description
Technical Field
The utility model relates to a track traffic infrastructure construction technical field, concretely relates to put a device.
Background
The pre-tensioning method is a construction process of tensioning the prestressed tendon before pouring concrete, temporarily anchoring the tensioned prestressed tendon on a pedestal or a steel mould, then pouring the concrete, releasing the prestressed tendon when the strength of the concrete reaches not less than 80% of the designed strength value of the concrete and the prestressed tendon is ensured to be sufficiently bonded with the concrete, and applying prestress to the concrete by means of bonding of the concrete and the prestressed tendon.
When the high-speed railway ballastless track slab reinforcing steel bars are produced by using the pre-tensioning method, under the ordinary condition, the tensioned reinforcing steel bars are connected with the tensioning rod through threads, the tensioning rod is fixed on the tensioning beam, when the tensioning rod is placed, the motor is matched with the speed reducer to enable the tensioning rod to rotate, the tensioning rod is separated from the threads matched with the reinforcing steel bars, however, the head of the separated tensioning rod cannot retract to the outside of the inner side face of the mold, the subsequent demolding work of the ballastless track slab can be influenced, and the manual demolding work of the ballastless track slab can be completed only by retracting the tensioning rod to the outside of the inner side face of the mold. Because the number of the tension rods in actual production is large, the method needs a large amount of manual operation, so that the labor intensity of workers is high, the working efficiency of the whole tension releasing process is low, the production efficiency can be improved only by increasing the number of the workers, and the production cost is seriously influenced.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a put a device and put a method can be disposable accomplish the operation piece put an action, avoid artifical secondary adjustment stretch-draw pole to the realization is put the automation of an action, has improved production efficiency, has reduced manufacturing cost.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a put a device, include:
the tensioning rod is provided with a first end and a second end, the first end is an operation end, and the first end can be connected with an operation piece to be tensioned; the second end is connected with a driving device, and the tensioning rod can be driven to rotate by the driving device; the tensioning rod is provided with a first thread along the direction from the first end to the second end;
the guide seat is internally provided with an inner cavity with two through ends, the tension rod penetrates through the inner cavity, at least part of the inner cavity wall of the inner cavity is provided with second threads, and the second threads are in threaded connection with the first threads.
As a preferable technical scheme, the inner cavity of the guide seat is provided with an accommodating cavity, a backspacing nut is arranged in the accommodating cavity, and the wall of the inner cavity of the backspacing nut is provided with the second thread; the tension rod penetrates through the back-off nut.
As a preferable technical solution, a guide key for preventing the rotation of the back-off nut is arranged between the side wall of the back-off nut and the accommodating cavity, and a spring is arranged between the end surface of the back-off nut close to the second end and the inner side wall of the accommodating cavity.
As a preferable technical scheme, a third thread is arranged on the tension rod and between the first thread and the second end, and a locking nut is connected to the third thread in a threaded manner.
As a preferable technical scheme, the releasing and tensioning device further comprises a base, the base comprises a supporting plate which is vertically arranged, the guide seat is fixed on the side wall of the supporting plate, and the locking nut is arranged on the other side of the supporting plate relative to the guide seat; preferably, a through hole is formed in the supporting plate, and the tension rod penetrates through the supporting plate through the through hole.
As a preferable technical scheme, a thrust ball bearing is arranged between the locking nut and the support plate.
As a preferred technical scheme, a threaded hole groove connected with the operating piece is formed in the first end, the operating piece is a steel bar, and threads matched with the threaded hole groove are formed in the end portion of the steel bar.
As a preferable technical solution, in the process of releasing and tensioning the steel bar, a distance between a side of the first thread close to the second end and a side of the back-off nut close to the first end is greater than 0 and less than a length of the steel bar screwed into the thread hole groove.
As a preferable technical solution, when the reinforcing bar is to be screwed into the threaded hole groove, a distance between a side of the lock nut near the first end and a side of the back nut near the second end is greater than a thread length of the end of the reinforcing bar.
As a preferable technical solution, after the reinforcing steel bar is screwed into the threaded hole groove, a distance between a side of the first thread near the second end and a side of the back nut near the first end is greater than or equal to an elongation of the reinforcing steel bar during tensioning.
The utility model has the advantages of that:
1. after the tension rod is separated from the operation part, the first thread of the tension rod is in threaded connection with the second thread in the guide seat, so that the tension rod can be continuously retracted to the outside of the inner side surface of the mold in a rotating mode, manual secondary adjustment of the tension rod is avoided, automation of tension action is achieved, production efficiency is improved, and production cost is reduced.
2. The utility model discloses to roll back the nut and locate the inner chamber of guide holder to avoid rolling back the nut rotation through the feather key, simple structure, the manufacturing of being convenient for, each part manufacturing accuracy is high, and the assembly precision is high, low in manufacturing cost.
3. The spring between the nut and the inner cavity can ensure that the nut has certain movement amount in the axial direction, and the first thread on the tension rod can be smoothly screwed into the second thread of the backspacing nut.
4. A thrust ball bearing is arranged between the locking nut and the supporting plate, so that the friction resistance when the locking nut and the base move relatively can be effectively reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the present invention when the reinforcing bars are about to be screwed into the screw-threaded grooves;
fig. 3 is the utility model discloses the interior schematic diagram of back of well reinforcing bar screw in screw thread hole inslot.
In the figure: 1-tension rod, 2-third thread, 3-lock nut, 4-thrust ball bearing, 5-guide seat, 6-spring, 7-guide key, 8-second thread, 9-backspacing nut, 10-first thread, 11-reinforcing steel bar and 12-base.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides a sheet releasing device, including: the tensioning rod 1 is provided with a first end and a second end, the first end is an operation end, and the first end can be connected with an operation piece to be tensioned; the second end is connected with a driving device, and the tensioning rod 1 can be driven to rotate through the driving device; a first thread 10 is arranged on the tension rod 1 along the direction from the first end to the second end; the guide seat 5 is internally provided with an inner cavity with two through ends, the tension rod 1 penetrates through the inner cavity, at least part of the inner cavity wall of the inner cavity is provided with a second thread 8, and the second thread 8 is in threaded connection with the first thread 10.
It should be noted that, the work piece to be placed is usually the reinforcing steel bar 11, the driving device may be a motor driving transmission mechanism, the tension rod 1 is driven to rotate by the transmission mechanism, the transmission mechanism may be a gear, a rack, a conveyor belt, a speed reducer, etc., preferably, the tension rod 1 and the reinforcing steel bar 11 are in threaded connection, when the placing is completed, the tension rod 1 rotates under the driving of the driving device, the tension rod 1 is separated from the reinforcing steel bar 11 by a thread, and simultaneously, under the interaction of the second thread 8 and the first thread 10, the tension rod 1 can move in the direction from the first end to the second end, and retracts in the direction other than the inner side surface of the mold.
Examples
Referring to fig. 1-3, in the present embodiment, the inner cavity of the guide seat 5 has an accommodating cavity, a back-off nut 9 is disposed in the accommodating cavity, and a second thread 8 is disposed on the inner cavity wall of the back-off nut 9; the stretch-draw rod 1 passes through the backspacing nut 9, and in the retraction process of the stretch-draw rod 1, one side of the first thread 10 close to the second end can be in threaded connection with the second thread 8 on the backspacing nut 9, so that the stretch-draw rod 1 can further retract under the action of the second thread 8 on the backspacing nut 9, and finally the stretch-draw rod 1 retracts outside the inner side surface of the mold, and the manual secondary adjustment of the stretch-draw rod 1 is avoided.
On the basis of the embodiment, a guide key 7 for preventing the rotation of the backspacing nut 9 is arranged between the side wall of the backspacing nut 9 and the containing cavity, the guide key 7 is connected with the side wall of the backspacing nut 9 and the inner wall of the containing cavity to prevent the backspacing nut 9 from rotating in the containing cavity, further, the containing cavity is cylindrical, key grooves matched with the guide key 7 are formed in the inner wall of the containing cavity and the side wall of the backspacing nut 9, the key grooves in the inner wall of the containing cavity are long-strip-shaped, and the long edges of the key grooves are parallel to the axis of the containing cavity, so that the backspacing nut 9 can move along the axis direction of the containing cavity but cannot rotate; the end face of the backspacing nut 9 close to the second end and the inner side wall of the containing cavity are provided with the spring 6, preferably, one end of the containing cavity is provided with a backspacing nut stop dog, the backspacing nut 9 can be extruded on the backspacing nut stop dog through the spring 6, the other end of the containing cavity is provided with the spring stop dog which is abutted to the spring 6, the backspacing nut 9 is enabled to have a certain movement amount in the axial direction of the containing cavity, and the first thread 10 on the tension rod 1 can be smoothly screwed into the second thread 8 of the backspacing nut 9.
Preferably, a third thread 2 is arranged on the tension rod 1 and between the second thread 8 and the second end, the third thread 2 is in threaded connection with a locking nut 3, and the locking nut 3 can lock the position of the tension rod 1 when the steel bar 11 is tensioned.
On the basis of the above embodiment, the releasing and tensioning device further comprises a base 12, wherein the base 12 comprises a vertically arranged support plate, the support plate is used for supporting the guide seat 5 and the locking nut 3, in order to ensure the stability of the support, the guide seat 5 is fixed on the side wall of the support plate, and the locking nut 3 is arranged on the other side of the support plate relative to the guide seat 5; preferably, the support plate is provided with through holes, the tension rod 1 penetrates through the support plate through the through holes, preferably, the number of the support plates is two, and the tension rod 1 sequentially penetrates through the through holes of the two support plates, so that a certain supporting and guiding effect is achieved on the tension rod 1.
On the basis of the above embodiment, the thrust ball bearing 4 is arranged between the lock nut 3 and the support plate, and the thrust ball bearing 4 can effectively reduce the friction resistance when the lock nut 3 and the base 12 move relatively.
Preferably, the first end is provided with a threaded hole groove connected with the operating part, the operating part is a steel bar 11, the end of the steel bar 11 is provided with a thread matched with the threaded hole groove, the tension rod 1 is fixedly connected with the steel bar 11 in a threaded manner, and when the tension rod 1 rotates, the tension rod 1 can simultaneously complete two processes of separation from the thread of the steel bar 11 and retraction towards the outside of the inner side surface of the mold.
On the basis of the above embodiment, in the process of releasing and tensioning the steel bar 11, the distance between the side of the first thread 10 close to the second end and the side of the back-off nut 9 close to the first end is greater than 0 and smaller than the length of the steel bar 11 screwed into the thread hole groove, as shown in fig. 1, a in the drawing is the distance between the side of the first thread 10 close to the second end and the side of the back-off nut 9 close to the first end in the process of releasing and tensioning the steel bar 11, so that when the tension rod 1 is separated from the steel bar 11, the first thread 10 can be screwed into the second thread 8 of the back-off nut 9, and the tension rod 1 can be continuously moved in the direction from the first end to the second end.
On the basis of the above embodiment, when the reinforcing steel bar 11 is to be screwed into the threaded hole, the distance between the side of the locking nut 3 close to the first end and the side of the back-off nut 9 close to the second end is greater than the thread length of the end of the reinforcing steel bar 11, as shown in fig. 2, B in the figure is the distance between the side of the locking nut 3 close to the first end and the side of the back-off nut 9 close to the second end, and C in the figure is the thread length of the end of the reinforcing steel bar 11, so that it can be ensured that the locking nut 3 and the guide seat 5 do not contact to hinder the screwing-in of the reinforcing steel bar 11 before the reinforcing steel bar 11.
On the basis of the above embodiment, after the reinforcing steel bar 11 is screwed into the threaded hole, the distance between the side of the first thread 10 close to the second end and the side of the back-off nut 9 close to the first end is greater than or equal to the elongation of the reinforcing steel bar 11 during tensioning, as shown in fig. 3, D in the figure is the distance between the side of the first thread 10 close to the second end and the side of the back-off nut 9 close to the first end after the reinforcing steel bar 11 is screwed into the threaded hole, and E in the figure is the elongation of the reinforcing steel bar 11 during tensioning, so that when the reinforcing steel bar 11 is fully tensioned, the first thread 10 does not contact with the second thread 8 in the back-off nut 9, that is, the first thread 10 does not screw into the second thread 8 in the back-off nut 9, and smooth completion of the tensioning action is ensured.
The utility model utilizes the tension releasing device, the tension rod 1 can move among the first position, the second position and the third position along the axial direction of the tension rod 1, and when the tension rod is at the first position, the first end is connected with the operation piece and releases the operation piece; in the second position, the second thread 8 is in threaded connection with the back-off nut 9; in the third position, the tension rod 1 is separated from the work piece. After putting a completion, the utility model discloses a stretch-draw pole 1 rotates under drive arrangement's drive to in proper order through primary importance, second place and third position on the axis direction, outside the medial surface of retracting to the mould until the first end of stretch-draw pole 1.
The utility model discloses a concrete using-way as follows:
1. firstly, the locking nut 3 is rotated to release the tension force of the tension rod 1; and (3) screwing the steel bar 11 into the threaded hole at the first end of the tension rod 1, then, stretching the tension rod 1 by the tension mechanism so as to stretch the steel bar 11, and locking the position of the tension rod 1 by the locking nut 3 after the steel bar 11 is stretched to a set tension value.
2. After tensioning is finished, the tensioning rod 1 is rotated, so that threads between the tensioning rod 1 and the reinforcing steel bars 11 are slowly disengaged.
3. Before the screw thread between the tension rod 1 and the reinforcing steel bar 11 is separated, the first screw thread 10 on the tension rod 1 starts to be screwed into the second screw thread 8 of the backspacing nut 9, so that the tension rod 1 can always have screw thread connection, and the tension rod 1 can be ensured to continuously retreat only by rotating until the first end of the tension rod 1 retracts outside the inner side surface of the mould.
4. And when the first end of the tension rod 1 retracts to the outside of the inner side surface of the mold, stopping the rotation of the tension rod 1 and finishing the tension releasing process.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. An sheet releasing device, comprising:
the tensioning rod is provided with a first end and a second end, the first end is an operation end, and the first end can be connected with an operation piece to be tensioned; the second end is connected with a driving device, and the tensioning rod can be driven to rotate by the driving device; the tensioning rod is provided with a first thread along the direction from the first end to the second end;
the guide seat is internally provided with an inner cavity with two through ends, the tension rod penetrates through the inner cavity, at least part of the inner cavity wall of the inner cavity is provided with second threads, and the second threads are in threaded connection with the first threads.
2. The tension device as claimed in claim 1, wherein the inner cavity of the guide seat is provided with an accommodating cavity, a back nut is arranged in the accommodating cavity, and the wall of the inner cavity of the back nut is provided with the second thread;
the tension rod penetrates through the back-off nut.
3. The tension releasing device as claimed in claim 2, wherein a guide key for preventing the rotation of the back nut is provided between the side wall of the back nut and the accommodating chamber, and a spring is provided between an end surface of the back nut near the second end and an inner side wall of the accommodating chamber.
4. The tension device as claimed in claim 2, wherein a third thread is provided on the tension rod between the first thread and the second end, and a lock nut is threadedly connected to the third thread.
5. The tension releasing device as claimed in claim 4, further comprising a base, wherein the base comprises a support plate vertically arranged, the guide seat is fixed on a side wall of the support plate, and the lock nut is arranged on the other side of the support plate relative to the guide seat.
6. The tension releasing device as claimed in claim 5, wherein the support plate is provided with a through hole, and the tension rod passes through the support plate through the through hole.
7. A tension releasing device as claimed in claim 5, wherein a thrust ball bearing is provided between the lock nut and the support plate.
8. The tension device as claimed in claim 4, wherein the first end is provided with a threaded hole groove connected with the working member, the working member is provided with a steel bar, and the end of the steel bar is provided with a thread matching with the threaded hole groove.
9. The tension release device as claimed in claim 8, wherein, during the tension release of the steel bar, the distance between the side of the first thread near the second end and the side of the retraction nut near the first end is greater than 0 and less than the length of the steel bar screwed into the threaded hole groove.
10. The tension release device as claimed in claim 8, wherein a distance between a side of the lock nut adjacent to the first end and a side of the back nut adjacent to the second end is greater than a thread length of the end of the reinforcing bar when the reinforcing bar is to be screwed into the screw hole groove.
11. The relaxation device as claimed in claim 8, wherein a distance between a side of the first thread adjacent to the second end and a side of the back nut adjacent to the first end is greater than or equal to an elongation of the reinforcing bar when tensioned after the reinforcing bar is screwed into the threaded hole groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677472.9U CN210308400U (en) | 2019-05-13 | 2019-05-13 | Sheet placing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920677472.9U CN210308400U (en) | 2019-05-13 | 2019-05-13 | Sheet placing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210308400U true CN210308400U (en) | 2020-04-14 |
Family
ID=70138424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920677472.9U Active CN210308400U (en) | 2019-05-13 | 2019-05-13 | Sheet placing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210308400U (en) |
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2019
- 2019-05-13 CN CN201920677472.9U patent/CN210308400U/en active Active
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