CN214520996U - Tensioning nut screwing mechanism of automatic tensioning machine - Google Patents
Tensioning nut screwing mechanism of automatic tensioning machine Download PDFInfo
- Publication number
- CN214520996U CN214520996U CN202120445207.5U CN202120445207U CN214520996U CN 214520996 U CN214520996 U CN 214520996U CN 202120445207 U CN202120445207 U CN 202120445207U CN 214520996 U CN214520996 U CN 214520996U
- Authority
- CN
- China
- Prior art keywords
- stretch
- draw
- tensioning
- nut
- automatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model relates to an automatic tensioning machine's stretch-draw nut tightening mechanism belongs to automatic tensioning machine field. The utility model discloses a drive division, controller, transmission portion, main part, stretch-draw pole and cover are established the stretch-draw nut on the stretch-draw pole, its characterized in that, the main part includes fixed frame, main shaft sleeve and bearing, the main shaft sleeve tip is equipped with along the outside tooth of dialling of extending of axial, be equipped with on the stretch-draw nut along the outside arch of extending of radial, dial the tooth with the arch cooperation is connected; the driving part drives the main shaft sleeve to rotate through the transmission part; the controller is connected between the driving part and the transmission part and used for controlling the operation and the stop of the transmission part. The utility model is used for the stretch-draw of reinforcing bar, to the not enough that the concentricity requirement is high when current stretch-draw nut is automatic to screw up mechanism structure complicacy and installation, provide an automatic stretch-draw machine's stretch-draw nut screws up mechanism, simple structure, effective, safe and reliable.
Description
Technical Field
The utility model relates to an automatic stretch-draw machine field, concretely relates to automatic stretch-draw machine's stretch-draw nut tightening mechanism.
Background
The sleeper used on the railway is a concrete support paved below the steel rail, and all national standard sleepers are internally provided with embedded steel bars which need to apply prestress to ensure the strength of the sleeper. Tensioning of sleeper reinforcements is performed through a tensioning machine, and tensioning nuts are generally screwed after tensioning is finished.
At present, most production lines adopt manual work to screw up the operation of tensioning nuts, but because the reinforcing steel bars have a great safety risk due to the retraction force, the nuts are not easy to screw up manually, and the working efficiency is low. In addition, some devices for automatically screwing the tensioning nut are provided, but the structure is complex, the requirement on installation accuracy is high, for example, in the invention patent with the publication number of CN110039650B, six similar conical tooth-shaped lines are formed by the inner cavity of the locking head in the nut locking device, and the similar conical tooth-shaped lines can smoothly pass through the middle of the side line of the locking nut, wherein the phase position of the similar conical tooth-shaped lines is just near the middle of the side line of the locking nut; if the phase of the tooth-shaped line of the similar cone contacts the hexagonal angle, the whole nut locking device is pushed backwards, the passive tensioning spring is in a tensioning state at the moment, the contact switch is triggered, and the motor rotates to drive the transmission gear and the locking head to rotate until a proper position is found. The tooth-shaped line of the similar cone of the locking head is gradually contacted with the outer surface of the locking nut until the tooth-shaped line of the similar cone is completely clamped with the outer surface of the locking nut, and the locking head locks the locking nut under the driving of the motor. The device can only screw up the operation after need fixing a position sleeve and nut, uses too complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the concentricity requires high not enough when the mechanism structure is complicated, the installation to the automatic tightening of current stretch-draw nut, provides an automatic tensioning machine's stretch-draw nut tightening mechanism, simple structure, effective and can realize that limit stretch-draw limit is tightened.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a tensioning nut tightening mechanism of an automatic tensioning machine comprises a driving part, a controller, a transmission part, a main body part, a tensioning rod and a tensioning nut sleeved on the tensioning rod, and is characterized in that the main body part comprises a fixed rack, a main shaft sleeve and a bearing, the outer ring of the bearing is connected to the fixed rack, the inner ring of the bearing is sleeved outside the main shaft sleeve, the main shaft sleeve is sleeved on the tensioning rod, the end part of the main shaft sleeve is provided with a shifting tooth extending outwards along the axial direction, the tensioning nut is provided with a bulge extending outwards along the radial direction, and the shifting tooth is connected with the bulge in a matched manner; the driving part drives the spindle sleeve to rotate through the transmission part; the controller is connected between the driving part and the transmission part and used for controlling the operation and the stop of the transmission part.
Further, the poking teeth and the protrusions are cylindrical.
Further, dial the tooth and be four and evenly set up on the terminal surface of main shaft cover, the arch on the stretch-draw nut is four and evenly sets up on the surface of stretch-draw nut, it is located to dial the tooth between the arch.
Further, the driving part is a motor, and the transmission part comprises a belt and a belt pulley.
Further, the controller is a torque limiter.
The utility model has the advantages that:
the utility model discloses a spindle sleeve tip is equipped with along the outside tooth of dialling of extending of axial, be equipped with on the stretch-draw nut along the arch of radial outside extension, dial the tooth with the protruding cooperation is connected, realizes stretch-draw nut's automation and screws up, and it is not high to dial tooth and bellied cooperation precision requirement moreover, makes simply, the assembly degree of difficulty is low, and it is all very convenient to use the maintenance. In addition, the tensioning and tightening are realized under the control of the controller, so that the working efficiency is improved, and the tensioning process is safer.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the main body of the present invention;
FIG. 3 is a sectional view of the main body of the present invention;
fig. 4 is a schematic structural view of the tension nut of the present invention;
in the figure: 1. the automatic transmission device comprises a driving part, 2, a controller, 3, a transmission part, 4, a main body part, 5, a tension rod, 6, a tension nut, 7, a die end plate, 61, a bulge, 31, a first belt pulley, 32, a second belt pulley, 33, a belt, 41, a fixed frame, 42, a main shaft sleeve, 43, a bearing, 44, a shifting tooth, 46, an end cover, 47, an elastic retaining ring for a shaft and 48 a shaft sleeve.
Detailed Description
The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration purposes only and are not intended to limit the scope of the present invention.
As shown in fig. 1, the tensioning nut tightening mechanism of the automatic tensioning machine of the present embodiment includes a driving portion 1, a controller 2, a transmission portion 3, a main body portion 4, a tensioning rod 5, and a tensioning nut 6 sleeved on the tensioning rod, and is characterized in that the main body portion includes a fixed frame 41, a main shaft sleeve 42, and a bearing 43, an outer ring of the bearing 43 is connected to the fixed frame 41, an inner ring of the bearing 43 is sleeved on the outer side of the main shaft sleeve 42, the main shaft sleeve 42 is sleeved on the tensioning rod 5, a shifting tooth 44 extending outward along the axial direction is disposed at an end of the main shaft sleeve 42, a protrusion 61 extending outward along the radial direction is disposed on the tensioning nut 6, and the shifting tooth 44 is connected with the protrusion 61 in a matching manner; the driving part 1 drives the spindle sleeve 42 to rotate through the transmission part 3; the controller 2 is connected between the driving part 1 and the transmission part 3, and is used for controlling the operation and stop of the transmission part 3.
As shown in fig. 2 and fig. 4, as a preferred embodiment, the poking teeth 44 and the protrusions 61 are cylindrical, further, the poking teeth are four and uniformly arranged on the end surface of the spindle sleeve, the protrusions on the tension nut are four and uniformly arranged on the surface of the tension nut, and the poking teeth are located between the protrusions.
As an embodiment, the shape of the inner cavity of the fixed frame 41 is matched with the shape of the outer ring of the bearing 43, and the side surface of the fixed frame 41 is flush with the outer side of the bearing 43; end covers 46 are fixedly connected to both sides of the bearing 41 and the fixed frame 43, so that the position of the bearing 43 is fixed. The number of the bearings 43 can be two, a shaft sleeve 48 is arranged between the two bearings 43, and the shaft sleeve 48 is sleeved on the spindle sleeve 42. One side of the bearing 43 is further provided with a shaft circlip 47, and the shaft circlip 47 is sleeved on the main shaft sleeve 42 and has a gap with the end cover 46.
As shown in fig. 1, the driving unit 1 is a motor, the transmission unit 3 includes a belt 33, a first pulley 31 and a second pulley 32, and the first pulley 31 is connected to the spindle cover 42. Of course, the driving part 1 and the transmission part 3 may also adopt any other transmission mode that can replace belt wheel transmission, such as chain transmission, gear meshing transmission, and the like. The controller 2 used in this embodiment is a torque limiter, and is connected between the motor and the second pulley 32, when the motor torque exceeds a set value, the motor idles, the second pulley 32 stops, and when the overload situation disappears, the two automatically recover the connection.
When in use, the shifting teeth 44 on the main shaft sleeve 42 are always positioned between the bulges 61 of the tensioning nut 6; when the tension rod 5 stretches forwards, the motor is started, the motor drives the main shaft sleeve 42 to rotate through the transmission part 3, and the shifting teeth 44 on the main shaft sleeve 42 rotate along with the main shaft sleeve so as to shift the tension nut 6 to rotate, so that the tension nut 6 moves backwards along the threads. After the tensioning nut 6 is tightly attached to the die end plate 7, the shifting teeth 44 continue to shift, the motor torque exceeds a set value, the torque limiter stops the motion of the transmission part 3, at the moment, the tensioning rod 5 continues to tension, the tensioning nut 6 leaves the die end plate 7, the motor torque is reduced, the torque limiter enables the motor to be connected with the second belt 32 wheel again, and the transmission part 3 resumes the motion. Finally, tensioning is stopped, the tightening mechanism stops tightening due to the fact that the tensioning nut 6 clings to the end plate of the die and cannot continue to rotate and the torque of the motor exceeds a set value when the tightening mechanism continues to operate, tensioning and tightening are achieved, and the tensioning and tightening device is simple and effective in structure, safe and reliable.
Claims (5)
1. The utility model provides an automatic tensioning machine's stretch-draw nut tightening mechanism, includes drive division (1), controller (2), transmission portion (3), main part (4), stretch-draw pole (5) and cover establish stretch-draw nut (6) on the stretch-draw pole, its characterized in that, the main part is including fixed frame (41), spindle cover (42) and bearing (43), the outer lane of bearing (43) is connected on fixed frame (41), and the inner circle cover of bearing (43) is established in the spindle cover (42) outside, spindle cover (42) cover is established on stretch-draw pole (5), spindle cover (42) tip is equipped with along the outside tooth (44) of dialling of extending of axial, be equipped with on stretch-draw nut (6) along the outside arch (61) that extend, dial tooth (44) with arch (61) cooperation is connected; the driving part (1) drives the spindle sleeve (42) to rotate through the transmission part (3); the controller (2) is connected between the driving part (1) and the transmission part (3) and is used for controlling the operation and stop of the transmission part (3).
2. Tensioning nut tightening mechanism according to an automatic tensioning machine, according to claim 1, characterized in that said shifting tooth (44) and projection (61) are cylindrical.
3. A tensioning nut tightening mechanism of an automatic tensioning machine according to claim 1 or 2, characterized in that the pulling teeth (44) are four and evenly arranged on the end surface of the spindle sleeve (42), the protrusions (61) on the tensioning nut are four and evenly arranged on the surface of the tensioning nut (6), and the pulling teeth (44) are located between the protrusions (61).
4. A tensioning nut tightening mechanism of an automatic tensioning machine according to claim 1 or 2, characterized in that the driving part (1) is an electric motor and the transmission part (3) comprises a belt and a pulley.
5. Tensioning nut tightening mechanism of an automatic tensioning machine according to claim 1, characterized in that the controller (2) is a torque limiter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120445207.5U CN214520996U (en) | 2021-03-02 | 2021-03-02 | Tensioning nut screwing mechanism of automatic tensioning machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120445207.5U CN214520996U (en) | 2021-03-02 | 2021-03-02 | Tensioning nut screwing mechanism of automatic tensioning machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214520996U true CN214520996U (en) | 2021-10-29 |
Family
ID=78259447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120445207.5U Active CN214520996U (en) | 2021-03-02 | 2021-03-02 | Tensioning nut screwing mechanism of automatic tensioning machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214520996U (en) |
-
2021
- 2021-03-02 CN CN202120445207.5U patent/CN214520996U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2011235436A (en) | Clamping device | |
| CN202465165U (en) | Double-ratchet manual type winch | |
| CN214520996U (en) | Tensioning nut screwing mechanism of automatic tensioning machine | |
| CN110202691A (en) | Locking mechanism, tension of prestressed tendon holding member, implementation method and tensioning equipment | |
| JP5363965B2 (en) | Screw parts tightening device | |
| CN210651277U (en) | Locking structure, prestressed tendon tensioning and maintaining component and tensioning device | |
| CN102788134A (en) | Device for eliminating meshing back lash of worm gear and worm and increasing output torque | |
| CN210011148U (en) | Tensioning and holding mechanism for prestressed tendons of prefabricated track slab | |
| CN210236825U (en) | Automatic door driving device of construction elevator | |
| CN102825570A (en) | Vertical double-electric-torque wrench | |
| CN101195213A (en) | Intelligent electric screwing down machine for spindle nose screwed cap | |
| CN216111972U (en) | Speed reducer with controllable output quantity | |
| CN203127969U (en) | Construction lift transmission device allowing intermediate gears to be meshed with rack | |
| CN212598675U (en) | Anti-reverse feeding power mechanism of cold header | |
| CN113463453A (en) | Intelligent bolt stress diffusion vehicle | |
| CN209394982U (en) | A kind of tensioning holding structure of pre-track board prestress muscle | |
| EP2363223A1 (en) | Clamping device for machine tools | |
| CN217026949U (en) | Screw hoist of built-in safety nut | |
| CN217596955U (en) | Torque-adjustable electric wrench | |
| CN221296042U (en) | Steering adjusting device and carrier | |
| CN215561585U (en) | Intelligent bolt stress diffusion vehicle | |
| CN218201970U (en) | Screw rod elevator with automatic rotation function of screw rod | |
| CN109262827A (en) | A kind of tensioning holding structure of pre-track board prestress muscle | |
| CN107053059B (en) | A kind of mechanical automatic screwdriver | |
| CN2328462Y (en) | Bolt fastening machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |