阅读说明：本技术 一种自落梁转体球铰 (Self-falling beam swivel spherical hinge ) 是由 冯祁 李辉 高静青 桂鉴臣 赵志磊 徐升桥 彭岚平 李艳明 于 2021-08-24 设计创作，主要内容包括：一种自落梁转体球铰,包括：上球摆、耐磨滑板、下球摆、底座板和可固液转化材料；所述下球摆设置于所述上球摆的下方；所述上球摆和所述下球摆之间设置有所述耐磨滑板；所述底座板的底板的上面设置有容纳槽,所述可固液转化材料设置在所述容纳槽内,所述下球摆的底面与所述可固液转化材料的上表面接触。从而可以通过转体球铰自身实现落梁功能,无需使用千斤顶,减少了现场施工器械,提高了施工的安全性；进一步地,节约了大量的人力物力成本,缩短了施工周期。(A self-dropping beam swivel ball hinge comprising: the device comprises an upper ball pendulum, a wear-resistant sliding plate, a lower ball pendulum, a base plate and a solid-liquid convertible material; the lower ball pendulum is arranged below the upper ball pendulum; the wear-resistant sliding plate is arranged between the upper ball pendulum and the lower ball pendulum; the upper surface of the bottom plate of the base plate is provided with a containing groove, the solid-liquid conversion material is arranged in the containing groove, and the bottom surface of the lower spherical pendulum is in contact with the upper surface of the solid-liquid conversion material. Therefore, the beam falling function can be realized through the swivel spherical hinge, a jack is not needed, field construction equipment is reduced, and the construction safety is improved; furthermore, a large amount of manpower and material resource cost is saved, and the construction period is shortened.)

1. The utility model provides a from beam swivel ball pivot that falls which characterized in that includes: the device comprises an upper ball pendulum, a wear-resistant sliding plate, a lower ball pendulum, a base plate and a solid-liquid convertible material;

the lower surface of the upper pendulum is provided with a convex spherical surface, the middle part of the convex spherical surface is provided with a pin shaft hole, the lower pendulum is arranged below the upper pendulum, the upper surface of the lower pendulum is provided with a concave spherical surface matched with the convex spherical surface of the upper pendulum, and the middle part of the concave spherical surface is provided with a pin shaft matched with the pin shaft hole;

the wear-resistant sliding plate is arranged between the upper ball pendulum and the lower ball pendulum;

the upper surface of the bottom plate of the base plate is provided with a containing groove, the solid-liquid conversion material is arranged in the containing groove, and the bottom surface of the lower spherical pendulum is in contact with the upper surface of the solid-liquid conversion material.

2. The swivel spherical hinge according to claim 1, wherein a sealing device is installed at the periphery of the bottom of the lower pendulum, and the outer side surface of the sealing device is tightly attached to the inner wall of the accommodating groove.

3. The swivel ball hinge according to claim 2, wherein the sealing means comprises: the device comprises a first sealing device and a second sealing device, wherein the first sealing device is arranged at the bottommost part of the lower ball pendulum, and the second sealing device is arranged above the first sealing device.

4. The swivel ball hinge according to claim 1, wherein the solid-liquid convertible material uses paraffin.

5. The swivel spherical hinge according to claim 1, wherein the bottom of the receiving groove of the base plate is uniformly provided with a plurality of drainage channels leading to the outside of the base plate, and the ports of the drainage channels are provided with sealing plugs.

6. The swivel spherical hinge according to claim 1, wherein a plurality of first stoppers are uniformly distributed on the outer ring of the upper pendulum, a plurality of second stoppers are uniformly distributed on the outer ring edge of the base plate, a notch is formed between the second stoppers and the outer side wall of the receiving groove, and the first stoppers are inserted into the notch.

7. The swivel ball hinge according to claim 1, wherein a heating device is provided in the bottom plate of the base plate.

8. The swivel ball hinge according to claim 7, wherein the heating means uses heating wires, the base plate of the base plate is provided with uniformly distributed grooves, the heating wires are disposed in the grooves, and the grooves are provided with cover plates.

9. The swivel ball hinge of claim 1, wherein the upper pendulum has a plurality of anchor assemblies disposed thereon and the base plate has a plurality of anchor assemblies disposed thereon.

10. The swivel ball hinge according to claim 1, wherein the upper pendulum is provided with a reinforcing rib.

Technical Field

The application relates to the technical field of bridge engineering, in particular to a self-falling beam swivel spherical hinge.

Background

Swivel construction is a common construction method in bridge engineering, and is widely applied to various bridges such as railways, rail transit or highways. The bridge swivel construction refers to a construction method for pre-forming a beam body section at a non-designed axis position, then taking the beam body section as a rotor, and rotating the beam body section to a bridge position axis position, so that the beam body section and a main structure of a bridge are butted in place. Currently, the most common swivel construction method is a horizontal swivel construction method. The horizontal swivel construction method can be classified into a pier bottom swivel method and a pier top swivel method according to the difference in the mounting position of the swivel device. The pier top swivel method is a novel swivel construction method appearing in recent years, and usually a swivel spherical hinge is arranged between the top end of a pier body and a beam body section, so that the upper beam body section can be driven to rotate through the swivel spherical hinge.

In the prior art, after the swivel of the existing swivel spherical hinge is completed, roof-girder falling construction is often required to be performed in a relatively narrow space of a pier top, so that the dismounting of the swivel spherical hinge, the installation of a permanent support and the girder falling of a girder body are completed, and the stress conversion process from the swivel spherical hinge to the permanent support is completed. A large number of jacks are usually used in the roof beam falling construction, and the large number of jacks are required to be synchronously operated at the same time, so that the safety risk is extremely high; in addition, a large amount of manpower and material resources are consumed in the existing roof beam falling construction process, and the construction period is long.

In summary, the swivel ball hinge in the prior art has the disadvantages as described above, and therefore a swivel ball hinge with a self-beam-falling function is designed, so that a large number of jacks can be avoided in the beam-falling construction process on the top, construction equipment is reduced, the installation of the device on site is more convenient and faster, the construction safety is improved, and the problem to be solved in the field is solved urgently.

Disclosure of Invention

In view of the above, the invention provides a self-falling beam swivel spherical hinge, so that a beam falling function can be realized through the swivel spherical hinge, a jack is not required, field construction equipment is reduced, and construction safety is improved; furthermore, a large amount of manpower and material resource cost is saved, and the construction period is shortened.

The technical scheme of the invention is realized as follows:

a self-dropping beam swivel ball hinge comprising: the device comprises an upper ball pendulum, a wear-resistant sliding plate, a lower ball pendulum, a base plate and a solid-liquid convertible material;

the lower surface of the upper pendulum is provided with a convex spherical surface, the middle part of the convex spherical surface is provided with a pin shaft hole, the lower pendulum is arranged below the upper pendulum, the upper surface of the lower pendulum is provided with a concave spherical surface matched with the convex spherical surface of the upper pendulum, and the middle part of the concave spherical surface is provided with a pin shaft matched with the pin shaft hole;

the wear-resistant sliding plate is arranged between the upper ball pendulum and the lower ball pendulum;

the upper surface of the bottom plate of the base plate is provided with a containing groove, the solid-liquid conversion material is arranged in the containing groove, and the bottom surface of the lower spherical pendulum is in contact with the upper surface of the solid-liquid conversion material.

Preferably, a sealing device is installed on the periphery of the bottom of the lower pendulum, and the outer side surface of the sealing device is tightly attached to the inner wall of the accommodating groove.

Preferably, the sealing device comprises: the device comprises a first sealing device and a second sealing device, wherein the first sealing device is arranged at the bottommost part of the lower ball pendulum, and the second sealing device is arranged above the first sealing device.

Preferably, paraffin is used as the solid-liquid convertible material.

Preferably, the bottom of the containing groove of the base plate is uniformly provided with a plurality of liquid drainage channels leading to the outer side of the base plate, and the ports of the liquid drainage channels are provided with sealing and plugging wires.

Preferably, a plurality of first limiting blocks which are uniformly distributed are arranged at the outer ring of the upper pendulum, a plurality of second limiting blocks which are uniformly distributed are arranged at the edge of the outer ring of the base plate, a notch is formed between the second limiting blocks and the outer side wall of the accommodating groove, and the first limiting blocks are inserted into the notch.

Preferably, a heating device is arranged in the bottom plate of the base plate.

Preferably, the heating device uses heating wires, grooves are uniformly distributed on a bottom plate of the base plate, the heating wires are arranged in the grooves, and cover plates are arranged on the grooves.

Preferably, a plurality of anchoring components are arranged on the upper pendulum, and a plurality of anchoring components are arranged on the base plate.

Preferably, a reinforcing rib plate is arranged on the upper pendulum.

As can be seen from the above, in the self-falling beam swivel spherical hinge, the layer of solid-liquid conversion material is filled in the swivel spherical hinge, and the beam falling function of the beam body section is realized through the form change of the solid-liquid conversion material, so that the solid-liquid conversion material has low cost, is easy to obtain and has stable chemical performance, thereby not only reducing field construction equipment, but also facilitating the field installation and improving the construction safety; furthermore, a large amount of manpower and material resource cost is saved, and the construction period is shortened.

Drawings

Fig. 1 is a schematic view of a mounting position of a self-landing beam swivel ball joint in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a self-landing beam swivel ball joint in an embodiment of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

FIG. 4 is a schematic front view of a base plate in an embodiment of the invention.

FIG. 5 is a top view of a base plate in an embodiment of the invention.

Detailed Description

In order to make the technical scheme and advantages of the invention more apparent, the invention is further described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, the present invention provides a self-landing beam swivel ball hinge, including: an upper spherical pendulum 11, a wear-resistant sliding plate 12, a lower spherical pendulum 13, a base plate 15 and a solid-liquid convertible material 19;

a convex spherical surface is arranged on the lower surface of the upper pendulum 11, a pin shaft hole 111 is arranged in the middle of the convex spherical surface, the lower pendulum 13 is arranged below the upper pendulum 11, a concave spherical surface matched with the convex spherical surface of the upper pendulum is arranged on the upper surface of the lower pendulum 13, and a pin shaft 131 matched with the pin shaft hole 111 is arranged in the middle of the concave spherical surface;

the wear-resistant sliding plate 12 is arranged between the upper ball pendulum 11 and the lower ball pendulum 13;

the base plate 15 has a receiving groove 152 formed in an upper surface of a bottom plate 153, the solid-liquid transformable material 19 is disposed in the receiving groove 152, and a bottom surface of the lower pendulum 13 is in contact with an upper surface of the solid-liquid transformable material 19.

In the technical scheme of the invention, the self-falling beam swivel spherical hinge can be realized by using various realization methods. The technical solution of the present invention will be described in detail below by taking one implementation manner as an example.

For example, in an embodiment of the present invention, as shown in fig. 2, a convex spherical surface is disposed in the middle of the lower surface of the upper pendulum 11, a pin hole 111 is disposed in the middle of the convex spherical surface, the lower pendulum 13 is disposed below the upper pendulum 11, the lower surface of the lower pendulum 13 is a circular plane, the upper surface of the lower pendulum 13 is a concave spherical surface matched with the convex spherical surface of the upper pendulum, and a pin 131 matched with the pin hole 111 is disposed in the middle of the concave spherical surface; the pin shaft hole 111 on the upper pendulum 11 is connected with the pin shaft 131 on the lower pendulum 13 in a matching way, and the matching clearance of the pin shaft hole 111 and the pin shaft 131 meets the swing stroke.

Preferably, a plurality of anchoring assemblies 113 are arranged on the upper pendulum 11, so that the upper pendulum ball 11 can be fixedly connected with the beam body section above the swivel ball joint through the plurality of anchoring assemblies 113. When the swing construction is carried out, the beam body drives the upper spherical pendulum 11 to rotate through the sliding friction between the upper spherical pendulum 11 and the wear-resistant sliding plate 12.

Preferably, the upper pendulum 11 may be provided with a reinforcing rib 112, so that the local rigidity of the upper pendulum and the connection strength with concrete may be improved.

For another example, in an embodiment of the present invention, as shown in fig. 2 to 4, a receiving groove 152 is preferably disposed on the bottom plate 153 of the base plate 15, and the solid-liquid conversion material 19 is disposed in the receiving groove 152.

In addition, as an example, in a preferred embodiment of the present invention, as shown in fig. 2 and fig. 3, a sealing device is installed on the periphery of the bottom of the lower pendulum 13, and an outer side surface of the sealing device is tightly attached to the inner wall of the receiving groove 152, so that the sealing performance inside the receiving groove 152 is ensured, and thus, when the lower pendulum 13 descends while the solid-liquid convertible material 19 is converted into liquid, the liquid is prevented from overflowing along the inner wall of the receiving groove.

Preferably, the sealing means may comprise: a first sealing device 17 and a second sealing device 18, wherein the first sealing device 17 is arranged at the bottommost part of the lower pendulum 13, and the second sealing device 18 is arranged above the first sealing device 17.

The sealing device can adopt various types on the premise of meeting the sealing performance, wherein the sealing device comprises but is not limited to a V-shaped sealing ring, an O-shaped sealing ring, a Y-shaped sealing ring, a combined sealing ring and the like.

Preferably, the first sealing device 17 is a Y-shaped sealing ring; the second sealing device 18 is an O-ring.

For another example, preferably, in an embodiment of the present invention, paraffin may be used as the solid-liquid convertible material 19.

The paraffin is solid at normal temperature, can be converted into liquid by heating or other means when the beam is required to fall, has the advantages of low cost, easy acquisition, pressure in a sealed container, difficult deformation and the like, and has stable chemical property and high reliability.

In addition, as an example, in a preferred embodiment of the present invention, as shown in fig. 3, the bottom of the receiving groove 152 of the base plate 15 may be uniformly provided with a plurality of drainage channels 16 leading to the outside of the base plate, and the sealing plug 161 is installed at the end of the drainage channel 16.

After the solid-liquid conversion material 19 is converted into liquid, the sealing plug 161 is opened, the liquid can be discharged out of the accommodating groove 152 through the liquid discharge hole 16 arranged on the base plate, along with the reduction of the volume of the liquid in the accommodating groove 152, the bottom of the lower spherical pendulum 13 also descends, the self-beam-falling function of the swivel spherical hinge is further realized, the beam-falling process can be regulated, and the falling height of the beam body can be regulated by controlling the volume of the discharged liquid.

In addition, as an example, in a preferred embodiment of the present invention, as shown in fig. 2, a plurality of first stoppers 23 are uniformly distributed at an outer ring of the upper pendulum 11, a plurality of second stoppers 22 are uniformly distributed at an outer ring edge of the base plate 15, a notch 25 is formed between the second stopper 22 and an outer side wall of the receiving groove 152, and the first stopper 23 can be inserted into the notch 25, so that a limiting effect can be achieved between the upper pendulum and the base plate, and an uneven sinking or a small-amplitude corner of the swivel ball hinge during a beam falling process can be prevented.

Preferably, a wear-resistant sliding pair may be disposed between the first limiting block 23 and the second limiting block 22, so that it can be ensured that the lower ball pendulum, the upper ball pendulum and the beam body fall along with the decrease of the volume of the liquid in the accommodating groove 152 during the beam falling process, and at this time, even if the first limiting block 23 on the upper ball pendulum slides in contact with the second limiting block 22 on the base plate, a large frictional resistance is not generated.

Preferably, a plurality of anchoring assemblies 151 are disposed on the base plate 15, so that the base plate 15 can be fixedly connected with the pier below the swivel ball joint through the plurality of anchoring assemblies 151.

Further, as an example, in a preferred embodiment of the present invention, as shown in fig. 5, a heating device may be provided in the bottom plate 153 of the base plate 15 so that the heating device can heat the solid-liquid convertible material 19.

Preferably, the heating device may use heating wires, and the bottom plate 153 of the base plate 15 is provided with uniformly distributed grooves, in which the heating wires 20 are disposed.

Preferably, a cover plate may be provided on the groove, so that the heating wire inside the groove may be sealed,

preferably, heater strip both ends connect can set up beyond the bed plate, connects the temperature controller to make the speed of falling the roof beam can control through the temperature of regulation and control heater strip, if the engineering time is comparatively nervous, the temperature of heater strip is increaseed to the accessible temperature controller, makes paraffin melt speed and accelerates, and paraffin liquefaction degree is higher, and exhaust speed is faster, and then makes the speed that the roof beam body of upper and lower pendulum and top descends accelerate, improves the efficiency of construction.

In order to ensure that the solid-liquid conversion material 19 can be rapidly converted from a solid state into a liquid state, a heating device is arranged to heat the solid-liquid conversion material, the heating device can select a heating wire, a heating rod or a heating pipe, and the like, the arrangement mode can select external winding or internal embedding, and in order to enable the solid-liquid conversion material 19 to be uniformly heated, the heating wire is preferably adopted to be embedded in the base plate 15 at the bottom of the solid-liquid conversion material 19.

The experiment of the invention proves that:

in order to simulate the use condition of the self-falling beam swivel ball hinge under the actual working condition, a press machine is used for carrying out a pressurization experiment on the swivel ball hinge.

The diameter of the accommodating groove of the experimental swivel ball hinge is 400mm, the thickness of the filling paraffin layer is 3cm, and the using specification is a YXD-400x376x24 sealing ring. The paraffin is pressurized at the compressive strength of 50MPa and 60MPa respectively, and the actual use condition of the self-falling beam swivel spherical hinge is reduced to the maximum extent.

The ball pivot of turning is assembled, the sealing washer is installed, electric heating wire is installed, after the ball pivot of turning is assembled, the total height of the ball pivot of turning before the measurement experiment is 248mm, the ball pivot of turning is transferred to a test bed of a press machine, a temperature controller is connected, and a power supply is switched on.

Firstly, testing the stability of the device:

gradually increasing the pressure to 6280KN for corresponding paraffin compressive strength is 50MPa, opening the heater strip power after the pressure is stable, setting the temperature to 150 ℃, continuously heating for 2 hours, observing the upper portion of the flowing back pore and the holding tank inner wall that are equipped with sealed stifled silk, all there is not paraffin leakage, ensure that the holding tank is sealed well, measure this moment and turn the ball pivot height and be 248mm, no compression deformation.

Gradually increasing the pressure to 7540KN to make the compressive strength of the corresponding paraffin 60MPa, opening the power supply of the heating wire after the pressure is stable, setting the temperature to 150 ℃, continuously heating for 2 hours, observing the upper parts of the liquid discharge pore channel provided with the sealing and blocking wire and the inner wall of the accommodating groove, and ensuring that no paraffin is leaked, wherein the height of the measuring swivel ball hinge is 248mm and no change exists at the moment.

Therefore, the device is good in stability when pressure load under the actual working condition is simulated.

Secondly, verifying the stability of the beam falling process:

under the pressure state, the sealing and blocking wire at the port of the liquid discharge pore passage is slowly opened, and the discharge state is observed to be softened paraffin, so that the paraffin is at the melting critical point when the temperature of the heating wire is 150 ℃. To verify the descending speed, the height of the swivel ball joint at this time was measured to be 242mm after the paraffin was slowly discharged for about 1 minute, i.e., the beam falling height per minute was about 6 mm.

Therefore, the self-falling beam swivel can prove that the self-falling beam swivel is stable and reliable in the process of simulating the self-falling beam.

In addition, the speed of falling the roof beam can be controlled through adjusting the temperature of heater strip, and the temperature of heater strip can be increaseed to the accessible temperature controller, makes paraffin melt speed accelerate, and the higher the paraffin liquefaction degree is, and the faster is the speed of discharging from the flowing back pore to make the speed of roof beam body whereabouts faster.

In summary, in the technical solution of the present invention, the base plate is provided with the receiving tank, the solid-liquid convertible material is arranged in the receiving tank, the solid-liquid convertible material is heated and melted to convert the solid into the liquid, and the receiving tank can be discharged, so that the upper and lower spherical pendulum above the solid-liquid convertible material and the beam structure can be lowered along with the reduction of the volume of the liquid in the receiving tank, thereby achieving the purpose of beam falling.

According to the technical scheme, the adjustable self-falling beam swivel spherical hinge is provided, so that the beam falling function can be realized through the swivel spherical hinge, a jack is not needed, field construction equipment is reduced, and the construction safety is improved; furthermore, a large amount of manpower and material resource cost is saved, and the construction period is shortened.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.