CN220388377U

CN220388377U - Steel construction bridge welding strutting arrangement

Info

Publication number: CN220388377U
Application number: CN202322149254.7U
Authority: CN
Inventors: 郭晓峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-10
Filing date: 2023-08-10
Publication date: 2024-01-26
Anticipated expiration: 2033-08-10

Abstract

The utility model relates to the technical field of welding support, in particular to a welding support device for a steel structure bridge. The utility model has the advantages that: the transmission worm is driven to rotate through rotating the transmission worm, and then the driving gear is driven to rotate, so that the threaded sleeve and the telescopic ejector rod are in threaded transmission, the telescopic ejector rod is driven to stretch out and draw back to be adjusted, the whole adjustment process is provided with a certain self-locking effect through the threaded transmission of the telescopic ejector rod and the threaded sleeve, the self-locking effect can be further improved through the self-locking of the transmission worm to the transmission worm, the stability of fixing after adjustment is greatly improved, the fixing operation is not required, the lifting adjustment of the threaded transmission is small in stepwise performance, the device can adapt to more ranges, the speed reduction torque increasing transmission of the transmission worm and the distance increasing transmission of the driving gear to drive the driven gear are reduced, the physical strength required by rotating the transmission worm when a user lifts up to be adjusted is reduced, and the support can be fastened.

Description

Steel construction bridge welding strutting arrangement

Technical Field

The utility model relates to the technical field of welding support, in particular to a welding support device for a steel structure bridge.

Background

Along with the continuous promotion of urban traffic construction, the construction of an overhead bridge enters an unprecedented development period, and the existing viaduct generally adopts a bridge structure with reinforced concrete and a steel structure combined, so that the construction cost of the reinforced concrete is lower, but the construction period is long; the steel structure bridge is produced by factory modularization, and is welded and spliced on site, so that the construction period is short; therefore, steel structure bridges are widely used in recent years, the steel structure bridges generally adopt box girder structures, when the box girders are assembled and welded, the box girders are constructed by adopting a multi-point lower supporting method due to the factors such as gradient and arc line of the bridges, the supporting is generally realized by adopting a liftable sleeve supporting seat, and the height locking is realized by adopting a pin shaft.

The novel steel structure bridge welding support device is characterized in that an adjusting mechanism is arranged, the height of the support can be simply and conveniently adjusted, when the novel steel structure bridge welding support device is used, the supporting height can be easily adjusted by rotating a crank of the adjusting mechanism, and after the novel steel structure bridge welding support device is adjusted, the height is kept by a ratchet mechanism, and a fixed pin shaft can be easily inserted. And the adjusting mechanism can be conveniently taken down and used for adjusting other supports of the box girder. The bolt and the nut at the top of the supporting device can finely adjust the supporting height. The supporting device is simple and convenient to operate, saves time and labor, but the novel steel structure bridge welding supporting device has the following defects in use:

this novel steel construction bridge welding strutting arrangement its mode through the bolt provides to support fixedly, and its hole site is specific several positions, and the height of holding surface can not be completely with the adjustable high adaptation of hole site, therefore has certain limitation, and it realizes spacingly through the ratchet structure moreover, and its laborsaving effect still has the space that further promotes.

Disclosure of Invention

The object of the present utility model is to solve at least one of the technical drawbacks.

Therefore, an object of the present utility model is to provide a welding support device for a steel bridge, so as to solve the problems mentioned in the background art and overcome the defects existing in the prior art.

In order to achieve the above object, an embodiment of an aspect of the present utility model provides a steel structure bridge welding support device, which comprises a base, a guide sleeve is fixedly connected at the center of the top surface of the base, a threaded sleeve is rotationally connected at the center of the top of the guide sleeve, a driven gear is fixedly connected with the outer wall of the threaded sleeve, a transmission case is fixedly connected at the top of the guide sleeve, a transmission shaft is rotationally connected at the center of one side of the transmission case, a driving gear is fixedly connected at the top of the transmission shaft, the driving gear is in meshed connection with the driven gear, a transmission worm wheel is fixedly connected at the bottom of the transmission shaft, a transmission worm is rotationally connected at the bottom of one side of the outer wall of the guide sleeve, a guide seat is slidingly connected at the inner wall of the guide sleeve, a telescopic ejector rod is fixedly connected at the center of the top surface of the guide seat, a top of the telescopic ejector rod is fixedly connected with a jack, and the telescopic ejector rod is in threaded connection with the threaded sleeve.

By the above-mentioned scheme preferred, bar through-hole has been seted up to the center department of guide sleeve one side, the guide sleeve is close to the both sides of bar through-hole one side and all fixedly connected with ratchet, the length of the distribution of ratchet and the length of bar through-hole all with the high looks adaptation of guide sleeve.

The technical effect achieved by adopting the scheme is as follows: the adjustable length of the strip-shaped through hole is matched with the limit length of the ratchet bar, and the ratchet bar has a unidirectional limit function and can be automatically clamped after adjustment.

By the preferred guide post of the middle part fixedly connected with of above-mentioned arbitrary scheme, the guide post runs through the outer wall of play guide sleeve through the bar through-hole, one side sliding connection of guide post outer wall has spacing pinion rack, the one end fixedly connected with spring baffle that the guide post kept away from the guide post, thrust spring has been cup jointed to one side that the guide post is close to spring baffle, thrust spring is in between spacing pinion rack and the spring baffle, spacing pinion rack compresses tightly with the ratchet bar under thrust spring's promotion.

The technical effect achieved by adopting the scheme is as follows: when the telescopic ejector rod is upwards adjusted and jacked, automatic fixing is realized through the ratchet bar and the limiting toothed plate, and the fixing firmness is further improved.

By the above-mentioned scheme preferred, the both sides of spacing pinion rack all fixedly connected with handle, the center department fixedly connected with shell fragment pothook at a side top of spacing pinion rack, the dop bottom of shell fragment pothook is the inclined plane, the inclined plane top and the edge correspondence of spring baffle of shell fragment pothook dop.

The technical effect achieved by adopting the scheme is as follows: through the shell fragment pothook, can outwards stimulate spacing pinion rack when the flexible ejector pin of whereabouts, under the guide of inclined plane, make the shell fragment pothook push away automatically and hook the spring baffle again, make spacing pinion rack pull away from the ratchet bar, realize the unblock, the whereabouts of the flexible ejector pin of being convenient for is adjusted.

By any of the above schemes, preferably, the bottom of one side surface of the guide sleeve is fixedly connected with a connecting frame, the bottom of the transmission shaft is rotationally connected with the connecting frame, and the transmission worm is rotationally connected with one side of the bottom of the connecting frame.

The technical effect achieved by adopting the scheme is as follows: the bottom of transmission shaft is connected through the link, can improve the stability when transmission shaft rotates, prevents to take place the swing.

By any of the above-mentioned solutions, it is preferable that the length of the telescopic ram is adapted to the depth of the inner wall of the guide sleeve, and the diameter of the driving gear is smaller than the diameter of the driven gear.

The technical effect achieved by adopting the scheme is as follows: the driving gear drives the driven gear to rotate, so that the torque can be further reduced and increased, and the force required during rotation is reduced.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. this steel construction bridge welding strutting arrangement drives the transmission worm wheel through rotating the transmission worm and rotates, and then make the driving gear rotate and drive driven gear and rotate for screw sleeve and flexible ejector pin screw thread drive, drive flexible ejector pin flexible regulation, in the whole adjustment process, flexible ejector pin has certain self-locking effect with screw sleeve's screw drive, the self-locking that the rethread transmission worm carried out to the transmission worm wheel can further improve the self-locking effect, thereby improved the stability of adjusting the back fixedly greatly, no longer need carry out fixed operation alone simultaneously, screw drive's lift adjusts the echelonment little moreover, adaptable more size range's supporting height, the practicality has been improved.

2. This steel construction bridge welding strutting arrangement, through the speed reduction of drive worm wheel increase moment transmission and the increase apart from transmission that the driving gear drove driven gear, can greatly reduced user rotate the required physical power of drive worm when rising the adjustment, make to adjust laborsaving more, through the increase moment of torsion simultaneously, can make to support more fastening.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic top view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 at A-A in accordance with the present utility model.

In the figure: the device comprises a base, a 2-guiding sleeve, a 3-threaded sleeve, a 4-driven gear, a 5-telescopic ejector rod, a 6-ejector head, a 7-transmission shaft, an 8-driving gear, a 9-connecting frame, a 10-transmission worm wheel, a 11-transmission worm, a 12-transmission box, a 13-ratchet bar, a 14-guiding column, a 15-limiting toothed plate, a 16-thrust spring, a 17-spring baffle, a 18-guiding seat, a 19-elastic sheet clamping hook and a 20-strip-shaped through hole.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following.

Embodiment one: as shown in fig. 1 to 3, a steel structure bridge welding support device comprises a base 1, a guide sleeve 2 is fixedly connected to the center of the top surface of the base 1, a threaded sleeve 3 is rotationally connected to the center of the top of the guide sleeve 2, a driven gear 4 is fixedly connected to the outer wall of the threaded sleeve 3, a transmission box 12 is fixedly connected to the top of the guide sleeve 2, a transmission shaft 7 is rotationally connected to the center of one side of the transmission box 12, a driving gear 8 is fixedly connected to the top of the transmission shaft 7, the driving gear 8 is in meshed connection with the driven gear 4, a transmission worm wheel 10 is fixedly connected to the bottom of the transmission shaft 7, a transmission worm 11 is rotationally connected to the bottom of one side of the outer wall of the guide sleeve 2, a guide seat 18 is in meshed connection with the transmission worm wheel 10, a telescopic ejector rod 5 is fixedly connected to the center of the top of the guide seat 18, and a top 6 is fixedly connected to the telescopic ejector rod 5 and is in threaded connection with the threaded sleeve 3.

As an alternative technical scheme of the utility model, a strip-shaped through hole 20 is formed in the center of one side surface of the guide sleeve 2, ratchet bars 13 are fixedly connected to two sides, close to one side surface of the strip-shaped through hole 20, of the guide sleeve 2, the distribution length of the ratchet bars 13 and the length of the strip-shaped through hole 20 are matched with the height of the guide sleeve 2, so that the adjustable length of the strip-shaped through hole 20 is matched with the limit length of the ratchet bars 13, and the ratchet bars 13 have a unidirectional limit function and can be automatically clamped after adjustment.

As an alternative technical scheme of the utility model, the middle part of one side surface of the guide seat 18 is fixedly connected with the guide post 14, the guide post 14 penetrates through the outer wall of the guide sleeve 2 through the strip-shaped through hole 20, one side of the outer wall of the guide post 14 is slidably connected with the limiting toothed plate 15, one end of the guide post 14, which is far away from the guide seat 18, is fixedly connected with the spring baffle 17, one side of the guide post 14, which is close to the spring baffle 17, is sleeved with the thrust spring 16, the thrust spring 16 is positioned between the limiting toothed plate 15 and the spring baffle 17, and the limiting toothed plate 15 is tightly pressed with the ratchet bar 13 under the pushing of the thrust spring 16, so that when the telescopic ejector rod 5 is adjusted upwards and jacked, automatic fixing is realized through the ratchet bar 13 and the limiting toothed plate 15, and the fixing firmness is further improved.

As an alternative technical scheme of the utility model, both sides of the limiting toothed plate 15 are fixedly connected with handles, the center of the top of one side surface of the limiting toothed plate 15 is fixedly connected with a spring plate clamping hook 19, the bottom of the clamping head of the spring plate clamping hook 19 is an inclined surface, the top of the inclined surface of the clamping head of the spring plate clamping hook 19 corresponds to the edge of the spring baffle 17, the limiting toothed plate 15 can be pulled outwards when the telescopic ejector rod 5 falls through the spring plate clamping hook 19, the spring baffle 17 is hooked again by pushing the spring plate clamping hook 19 automatically under the guidance of the inclined surface, the limiting toothed plate 15 is pulled away from the ratchet bar 13, unlocking is realized, and falling adjustment of the telescopic ejector rod 5 is facilitated.

As an alternative technical scheme of the utility model, the bottom of one side surface of the guide sleeve 2 is fixedly connected with the connecting frame 9, the bottom of the transmission shaft 7 is rotationally connected with the connecting frame 9, the transmission worm 11 is rotationally connected with one side of the bottom of the connecting frame 9, and the bottom of the transmission shaft 7 is connected with the connecting frame 9, so that the stability of the transmission shaft 7 during rotation can be improved, and the swing can be prevented.

As an alternative technical scheme of the utility model, the length of the telescopic ejector rod 5 is matched with the depth of the inner wall of the guide sleeve 2, and the diameter of the driving gear 8 is smaller than that of the driven gear 4, so that the adjustable length of the telescopic ejector rod 5 is matched with the guide length of the guide sleeve 2, and the driven gear 4 is driven to rotate by the driving gear 8 to further reduce the speed and increase the torque and reduce the force required during rotation.

A steel structure bridge welding support device has the following working principle:

1) Firstly, the transmission worm 11 is rotated to drive the transmission worm wheel 10 to rotate, so that the driving gear 8 is rotated to drive the driven gear 4 to rotate;

2) The threaded sleeve 3 is in threaded transmission with the telescopic ejector rod 5 to drive the telescopic ejector rod 5 to be in telescopic adjustment;

3) The telescopic ejector rod 5 and the thread of the thread sleeve 3 have a certain self-locking effect, and the self-locking of the transmission worm 11 to the transmission worm wheel 10 is realized, so that the fixation after adjustment is realized.

In summary, this steel construction bridge welding strutting arrangement drives the rotation of transmission worm wheel 10 through rotating transmission worm 11, and then make driving gear 8 rotate and drive driven gear 4 and rotate, make screw sleeve 3 and flexible ejector pin 5 screw drive, drive flexible ejector pin 5 and adjust, in the whole adjustment process, the screw drive of flexible ejector pin 5 and screw sleeve 3 has certain self-locking effect, the self-locking that the rethread transmission worm 11 carried out to the transmission worm wheel 10 can further improve self-locking effect, thereby the stability of adjusting the back is fixed greatly, need not carry out fixed operation alone again simultaneously, and screw drive's lift adjusts the echelonment little, adaptable more size range's supporting height, the practicality has been improved, the rethread transmission worm 11 drives the increase of pitch transmission of driven gear 4 with the speed and increase of transmission worm wheel 10, can greatly reduced the required physical power of rotation transmission worm 11 when the user rises the adjustment, make the regulation more laborsaving, simultaneously through increasing the moment of torsion, can make the support more fastening.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A steel construction bridge welding strutting arrangement, its characterized in that: including base (1), the center department fixedly connected with guide sleeve (2) of base (1) top surface, the center department rotation at guide sleeve (2) top is connected with screw thread sleeve (3), the outer wall fixedly connected with driven gear (4) of screw thread sleeve (3), the top fixedly connected with transmission case (12) of guide sleeve (2), the center department rotation of transmission case (12) one side is connected with transmission shaft (7), the top fixedly connected with driving gear (8) of transmission shaft (7), driving gear (8) and driven gear (4) meshing are connected, the bottom fixedly connected with transmission worm wheel (10) of transmission shaft (7), the bottom rotation of guide sleeve (2) outer wall one side is connected with drive worm (11), drive worm (11) and drive worm wheel (10) meshing are connected, the inner wall sliding connection of guide sleeve (2) has guide holder (18), the center department fixedly connected with flexible top (5) of guide holder (18) top surface, the top fixedly connected with plug (6) of flexible top (5), the bottom fixedly connected with drive worm wheel (10) of push rod (3) and flexible screw thread sleeve (3).

2. The steel structure bridge welding support device according to claim 1, wherein: the center department of a side of direction sleeve (2) has seted up bar through-hole (20), the both sides that direction sleeve (2) are close to a side of bar through-hole (20) are all fixedly connected with ratchet bar (13), the length of distribution of ratchet bar (13) and the length of bar through-hole (20) all with the high looks adaptation of direction sleeve (2).

3. The steel structure bridge welding support device according to claim 2, wherein: the middle part fixedly connected with guide post (14) of guide holder (18) side, guide post (14) run through the outer wall of play guide sleeve (2) through bar through-hole (20), one side sliding connection of guide post (14) outer wall has spacing pinion rack (15), one end fixedly connected with spring baffle (17) that guide post (14) kept away from guide holder (18), thrust spring (16) have been cup jointed to one side that guide post (14) is close to spring baffle (17), thrust spring (16) are in between spacing pinion rack (15) and spring baffle (17), spacing pinion rack (15) compress tightly with ratchet bar (13) under thrust spring's (16) promotion.

4. A steel structure bridge welding support device according to claim 3, wherein: both sides of spacing pinion rack (15) are all fixedly connected with handle, the center department fixedly connected with shell fragment pothook (19) at a side top of spacing pinion rack (15), the dop bottom of shell fragment pothook (19) is the inclined plane, the inclined plane top and the edge of spring baffle (17) of the dop top of shell fragment pothook (19) correspond.

5. The steel structure bridge welding support device according to claim 1, wherein: the bottom of a side face of the guide sleeve (2) is fixedly connected with a connecting frame (9), the bottom of the transmission shaft (7) is rotationally connected with the connecting frame (9), and the transmission worm (11) is rotationally connected with one side of the bottom of the connecting frame (9).

6. The steel structure bridge welding support device according to claim 1, wherein: the length of the telescopic ejector rod (5) is matched with the depth of the inner wall of the guide sleeve (2), and the diameter of the driving gear (8) is smaller than that of the driven gear (4).