阅读说明：本技术 一种双应用场景的混凝土预制盖板预埋吊具及其使用方法 (Dual-application-scene concrete prefabricated cover plate pre-buried lifting appliance and using method thereof ) 是由 张涛 曹少卫 孙亮 陶瑜 严晗 王斌 张文学 严心军 张邦旭 谢静 宋宝仓 郭 于 2020-05-21 设计创作，主要内容包括：本发明提供一种双应用场景的混凝土预制盖板预埋吊具,包括,下底座,所述下底座包括下底座体以及设于所述下底座体上的下连接件；所述上底座体顶部设有开口；所述上连接件与所述下连接件可拆卸连接。顶部连接件,所述顶部连接件包括吊装件与载荷件,适于分别可拆卸连接于所述安装腔处。本发明所述的双应用场景的混凝土预制盖板预埋吊具,可重复打开预制盖板,适应预制盖板需要承受载荷和需要重复起吊时使用。(The invention provides a concrete prefabricated cover plate embedded lifting appliance with double application scenes, which comprises a lower base, wherein the lower base comprises a lower base body and a lower connecting piece arranged on the lower base body; the top of the upper base body is provided with an opening; the upper connecting piece is detachably connected with the lower connecting piece. The top connecting piece comprises a hoisting piece and a load piece and is suitable for being detachably connected to the installation cavity respectively. The concrete prefabricated cover plate embedded lifting appliance with double application scenes can repeatedly open the prefabricated cover plate and is suitable for being used when the prefabricated cover plate needs to bear load and needs to be lifted repeatedly.)

1. The utility model provides a pre-buried hoist of precast concrete apron of two application scenes which characterized in that includes:

the lower base comprises a lower base body and a lower connecting piece arranged on the lower base body;

the upper base comprises an upper base body and an upper connecting piece arranged at the bottom of the upper base body; an installation cavity is arranged in the upper base body; the upper connecting piece is detachably connected with the lower connecting piece;

the top connecting piece comprises a hoisting piece and a load piece and is suitable for being detachably connected to the installation cavity respectively.

2. The concrete precast cover plate embedded lifting appliance according to the dual application scenario of claim 1, wherein the installation cavity comprises a smooth cavity and a threaded cavity, and the cavity diameter of the smooth cavity is larger than that of the threaded cavity; and the thread cavity is internally provided with threads suitable for being in threaded connection with the top connecting piece.

3. The concrete precast cover plate embedded lifting appliance with the double application scenes of claim 2 is characterized in that the lifting piece is an eye bolt; the lifting bolt comprises a thread section and a hoisting section, the thread section of the lifting bolt is in threaded connection with the thread cavity, and a hoisting hole is formed in the top end of the hoisting section of the lifting bolt.

4. The concrete precast cover plate embedded lifting appliance with double application scenes of claim 2, wherein the load part is a sealing bolt; the sealing bolt comprises a threaded section and a nut section; the threaded section of the sealing bolt is in threaded connection with the threaded cavity; the diameter of the nut section of the sealing bolt is larger than that of the thread section of the sealing bolt, and an inner hole is formed in the top of the nut section.

5. The concrete precast cover plate embedded lifting appliance in the dual application scenes of claim 3 or 4, wherein the lower connecting piece comprises at least three screw rods, and the screw rods are uniformly distributed around the center of the lower base body; the upper connecting piece is provided with a screw hole, and the screw rod is connected with the screw hole through a threaded sleeve.

6. The pre-buried hoist of precast concrete apron of two application scenes of claim 5, characterized in that, threaded sleeve is equipped with in the screw department of going up the connecting piece, threaded sleeve with the screw rod cooperation is connected.

7. The concrete precast cover plate embedded lifting appliance in the dual application scenes of claim 6, wherein an annular body is arranged on the outer side of the upper base body, and the annular body is positioned above the upper connecting piece.

8. The concrete precast cover plate embedded lifting appliance in the dual application scenes of claim 7, wherein the center of the lower connecting piece is hollowed.

9. The concrete precast cover plate embedded lifting appliance in the dual application scenes of claim 1, wherein the upper base body is cylindrical, and the outer wall of the upper base body is provided with combination grains.

10. The use method of the concrete precast cover plate embedded lifting appliance in the double application scenes as claimed in claim 1 is characterized by comprising the following steps:

s1, in the process of prefabricating the concrete precast cover plate, embedding the concrete precast cover plate pre-buried lifting appliance in the double application scenes into the concrete precast cover plate, and keeping the top of the upper base body consistent with the plate surface height of the concrete precast cover plate;

s2, when the precast concrete cover plate needs to be lifted, a lifting piece is installed in the installation cavity of the upper base body, and a lifting device is connected with the lifting piece for lifting;

and when the concrete prefabricated cover plate is required to bear load, the load piece is installed in the installation cavity of the upper base body.

Technical Field

The invention belongs to the field of hoisting tools, and particularly relates to a concrete prefabricated cover plate embedded hoisting tool with double application scenes and a use method thereof.

Background

The precast concrete cover plate is mostly used for the upper buckle cover of a ditch, a cable trench, a pipe trench, a small pipe gallery and the like, and the upper sling arrangement of the precast concrete cover plate on the upper part of the precast concrete cover plate becomes indispensable, wherein the precast concrete cover plate is large and heavy, particularly needs to pass through heavy load on the cover plate and needs to be opened periodically or irregularly.

The pre-buried hoist then mainly used fixes the precast concrete apron, carry out the apron handling through being connected with the jack-up hoist, it is extensive in life and production operation application, the pre-buried hoist of precast concrete apron on the present market is with round steel cold-bending processing more, or form with the thick steel plate welding of punching, when exerting overweight load above the precast concrete apron, need consider pre-buried hoist can be outstanding the face of precast concrete apron, and then arouse the following problem, the face that pre-buried hoist is outstanding the precast concrete apron will destroy precast concrete apron's wholeness to a certain extent, also do not benefit to the pleasing to the eye that carries out the whole utilization to the precast concrete apron, when need opening the handling to the precast concrete apron simultaneously, be unfavorable for the connection and the operation of jack-up hoist.

In view of this, it is urgently needed to provide a concrete precast cover plate pre-buried lifting appliance capable of repeatedly opening a concrete precast cover plate in a dual-application scenario.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to provide a concrete prefabricated cover plate pre-embedded lifting appliance capable of repeatedly opening concrete prefabricated cover plate in double application scenes

The invention relates to a concrete precast cover plate pre-buried lifting appliance with double application scenes, which comprises,

the lower base comprises a lower base body and a lower connecting piece arranged on the lower base body;

the upper base comprises an upper base body and an upper connecting piece arranged at the bottom of the upper base body; an installation cavity is arranged in the upper base body; the upper connecting piece is detachably connected with the lower connecting piece;

the top connecting piece comprises a hoisting piece and a load piece and is suitable for being detachably connected to the installation cavity respectively.

Further, the installation cavity comprises a smooth cavity and a threaded cavity, and the cavity diameter of the smooth cavity is larger than that of the threaded cavity; and the thread cavity is internally provided with threads suitable for being in threaded connection with the top connecting piece.

Further, the hoisting piece is an eyebolt; the lifting bolt comprises a thread section and a hoisting section, the thread section of the lifting bolt is in threaded connection with the thread cavity, and a hoisting hole is formed in the top end of the hoisting section of the lifting bolt.

Further, the load member is a sealing bolt; the sealing bolt comprises a threaded section and a nut section; the threaded section of the sealing bolt is in threaded connection with the threaded cavity; the diameter of the nut section of the sealing bolt is larger than that of the thread section of the sealing bolt, and an inner hole is formed in the top of the nut section.

Further, the sealing bolt comprises a threaded section and a nut section; the threaded section of the sealing bolt is in threaded connection with the threaded cavity; the diameter of the nut section of the sealing bolt is larger than that of the thread section of the sealing bolt, and an inner hole is formed in the top of the nut section.

Furthermore, the lower connecting piece comprises at least three screw rods, and the screw rods are uniformly distributed around the center of the lower base body; the upper connecting piece is provided with a screw hole, and the screw rod is connected with the screw hole through a threaded sleeve.

Furthermore, a threaded sleeve is arranged at the screw hole of the upper connecting piece and is connected with the screw in a matching manner.

Furthermore, an annular body is arranged on the outer side of the upper base body, and the annular body is positioned above the upper connecting piece.

Furthermore, the center of the lower connecting piece is hollowed out.

Furthermore, the upper base body is cylindrical, and the outer wall of the upper base body is provided with combination grains.

The invention also provides a using method of the concrete prefabricated cover plate prefabricated lifting appliance with double application scenes, which comprises the following steps,

s1, in the process of prefabricating the concrete precast cover plate, embedding the concrete precast cover plate pre-buried lifting appliance in the double application scenes into the concrete precast cover plate, and keeping the top of the upper base body consistent with the plate surface height of the concrete precast cover plate;

s2, when the precast concrete cover plate needs to be lifted, a lifting piece is installed in the installation cavity of the upper base body, and a lifting device is connected with the lifting piece for lifting;

and when the concrete prefabricated cover plate is required to bear load, the load piece is installed in the installation cavity of the upper base body.

Compared with the prior art, the technical scheme of the invention has the following advantages:

according to the concrete prefabricated cover plate embedded lifting appliance with the double application scenes, lifting bolts or sealing bolts are replaced in the installation cavity in the upper base body, when the prefabricated cover plate needs to be lifted, the threaded sections of the lifting bolts are in threaded connection with the threaded cavity of the installation cavity, and then the prefabricated cover plate is lifted; need bear the load at prefabricated apron, when needing to keep surface smoothness, with the threaded section of sealing bolt and the threaded cavity threaded connection of installation cavity, keep sealing bolt's nut section top and the top highly uniform of last base body, and then guarantee the surface smoothness of prefabricated apron, guaranteed the demand that bears the load promptly and increased beautifully again.

Drawings

Fig. 1 is a schematic structural diagram of a concrete precast cover plate pre-buried lifting appliance in a dual application scenario according to an embodiment of the invention;

fig. 2 is a cross-sectional view of a concrete precast cover plate pre-buried lifting tool in a dual application scenario of an embodiment of the present invention when a sealing bolt is installed;

fig. 3 is a cross-sectional view of a concrete precast cover plate pre-buried lifting tool in a dual application scenario when an eye bolt is installed;

wherein, 1, an upper base; 2. a lower base; 3. an eye bolt; 4. a seal bolt; 11. an upper base body; 12. an upper connecting piece; 21. a lower base body; 22. a lower connecting piece; 111. a mounting cavity; 112. an annular body; 113. a bonding pattern; 121. a screw hole; 122. a threaded sleeve; 221. a screw; 31. hoisting holes; 32. an inner bore; 1111. a smoothing chamber; 1112. a threaded cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The pre-buried hoist of two application scenarios concrete precast apron of this embodiment, as shown in fig. 1, includes, lower base 2 includes lower base body 21 and locates lower connecting piece 22 on lower base body 21.

The device comprises an upper base 1, wherein the upper base 1 comprises an upper base body 11 and an upper connecting piece 12 arranged at the bottom of the upper base body 11; an installation cavity 111 is arranged in the upper base body 11; the upper connecting member 12 is detachably connected to the lower connecting member 22.

The top connecting piece comprises a hoisting piece and a load piece and is suitable for being detachably connected to the mounting cavity 111 respectively.

The mounting cavity 111 comprises a smooth cavity 1111 and a threaded cavity 1112, and the cavity diameter of the smooth cavity 1111 is larger than that of the threaded cavity 1112; the thread cavity 1112 is internally provided with threads and is suitable for being in threaded connection with the top connecting piece;

in order to realize the applicability of the dual application scenario of this embodiment, as shown in fig. 2 and fig. 3, the hoisting member is an eyebolt 3, the eyebolt 3 includes a threaded section and a hoisting section, the threaded section is in threaded connection with the first threaded section, the top end of the hoisting section is provided with a hoisting hole 31 suitable for hoisting this embodiment, the load member is a seal bolt 4, the seal bolt 4 includes a threaded section and a nut section, the nut section diameter of the seal bolt 4 is greater than the threaded section diameter thereof, the top of the seal bolt 4 is provided with an inner hole 41 suitable for unscrewing the seal bolt 4, and the nut section height of the seal bolt 4 is adapted to the height of the smooth cavity 1111, in this embodiment, the nut section height of the seal bolt 4 is equal to the depth of the smooth cavity 1112.

In the embodiment, the hoisting ring bolt or the sealing bolt is replaced in the mounting cavity in the upper base body, when the prefabricated cover plate needs to be hoisted, the thread section of the hoisting ring bolt 3 is in threaded connection with the thread cavity 1112 of the mounting cavity, and then the prefabricated cover plate is hoisted; when the prefabricated cover plate needs to bear load and needs to keep surface flatness, the thread section of the sealing bolt 4 is in threaded connection with the thread cavity 1112 of the installation cavity, the top of the nut section of the sealing bolt 4 is kept to be consistent with the top of the upper base body in height, and then the surface flatness of the prefabricated cover plate is guaranteed, so that the requirement of bearing load is met, and attractiveness is increased.

In order to achieve the stability of the lower base body 21 and the upper base body 11 in the present embodiment, as shown in fig. 1 and fig. 2, the lower connecting member 22 includes at least three screws 221, and the screws 221 are distributed in a circumferential array around the center of the lower base body 21, and accordingly, the upper connecting member 12 is provided with screw holes 121 having the same number as the screws 221, the screws 221 are connected with the screw holes 121, specifically, in the present embodiment, the number of the screws 221 is four, and an included angle between adjacent screws 221 is 90 degrees.

The distance between the upper base body 11 and the lower base body 21 can be adjusted to a certain extent by the upper base body 11, the lower base body 21, the bolts and the screws for assembling the two, so as to adapt to the bearing requirements of prefabricated cover plates with different heights.

In order to increase the reliability of the connection between the lower connecting piece and the upper connecting piece, a thread sleeve 122 is arranged at the thread of the upper connecting piece, and the thread sleeve 122 is connected with the screw rod 221 in a matching manner. The arrangement of the thread sleeve 122 can increase the contact area of the threads, thereby enhancing the strength and reliability of the connection.

In order to further increase the contact area between the present embodiment and the concrete of the prefabricated cover plate, as shown in fig. 1, an annular body 112 is provided outside the upper base body 11, and the annular body 112 is located above the upper connecting member 12.

In order to reduce the weight of the present embodiment, as shown in fig. 2 and 3, the center of the lower connecting member 22 is hollowed out, so as to reduce the weight, reduce the manufacturing cost, and be more suitable for mass production.

In order to increase the bonding strength between the present embodiment and the prefabricated cover plate, the upper base body 11 is cylindrical, and the outer wall of the upper base body 11 is provided with the bonding lines 113, in the present embodiment, the bonding lines 113 are threaded, and the contact surface between the present embodiment and the prefabricated cover plate concrete is increased through the bonding lines 113, so that the bonding force between the upper base body 11 and the prefabricated cover plate concrete of the present embodiment is increased, and meanwhile, because the upper base body 11 is cylindrical, the contact stress between the present embodiment and the prefabricated cover plate concrete is more uniform, so that the overall bearing capacity of the present embodiment is increased.

The embodiment also provides a use method of the concrete precast cover plate embedded lifting appliance in the double application scenes, which comprises the following steps:

s1, in the process of prefabricating the concrete precast cover plate, embedding the concrete precast cover plate pre-buried lifting appliance in the double application scenes into the concrete precast cover plate, and keeping the top of the upper base body consistent with the plate surface height of the concrete precast cover plate;

s2, when the precast concrete cover plate needs to be lifted, a lifting piece is installed in the installation cavity of the upper base body, and a lifting device is connected with the lifting piece for lifting;

and when the concrete prefabricated cover plate is required to bear load, the load piece is installed in the installation cavity of the upper base body.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.