CN213389756U

CN213389756U - Precast beam construction platform with adjustable pre-camber

Info

Publication number: CN213389756U
Application number: CN202022251669.1U
Authority: CN
Inventors: 罗霆
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-06-08
Anticipated expiration: 2030-10-12

Abstract

The utility model relates to a construction technical field discloses a precast beam construction platform of camber adjustable in advance, including the workstation, the lower surface left and right sides of workstation is equipped with the supporting leg, both sides are equipped with first fixed plate around the upper surface of workstation, and the middle part of first fixed plate is rotated and is connected both ends around the lead screw, the middle part of the first slider of both sides threaded connection around the lead screw, and the lower extreme of joint support pole is rotated on the upper portion of first slider, and the upper end of bracing piece is rotated the lower part of connecting the second slider, the middle part sliding connection third guide bar of second slider, both ends fixed connection third fixed plate around the third guide bar, the upper end fixed connection roof of third fixed plate. The utility model is suitable for a precast beam construction platform of camber adjustable in advance drives the dwang through setting up a sliding seat that can the horizontal slip and removes to make this device only need control a dwang can, reduced the operation degree of difficulty of whole device.

Description

Precast beam construction platform with adjustable pre-camber

Technical Field

The utility model relates to a construction technical field specifically is a precast beam construction platform of camber adjustable in advance.

Background

Pre-camber: the correcting quantity opposite to the displacement direction is reserved during construction or manufacturing for offsetting the deflection of the beam, arch, truss and other structures under the action of load. Determining the factors: elastic deformation of the scaffold after bearing construction load; the deflection of the statically indeterminate structure caused by the shrinkage and creep of the concrete; plastic deformation generated by extrusion of the rod piece joint and compression of the unloading equipment; fourthly, the plastic-elastic sedimentation of the loaded scaffold foundation; pre-camber setting of bottom formworks of beams, plates and arches. When the maximum vertical deflection generated by the self weight of the structure and the load (not counting the impact force) of the automobile exceeds 1/1600 of the calculated span, the preset camber is required to be set, otherwise, the preset camber is not required to be set. The setting value of the pre-camber is adopted as the sum of the long-term deflection value calculated according to the self-weight of the structure and the encounter value of 1/2 variable load carrier frequency. The sum of the pre-camber calculated from the deflection of the beam and the deformation of the bracket is the highest value of the pre-camber and should be set at the mid-span of the beam. The pre-camber of other points is distributed according to straight line or quadratic parabola with the middle point as the highest point and two ends of the beam as zero.

Chinese patent (publication number: CN 211250711U) discloses a precast beam construction platform with adjustable pre-camber, which comprises a workbench, supporting frames which are sequentially and transversely arranged along the length direction of the workbench at certain intervals, supporting springs used for balancing the weight of the workbench, the supporting frames and a precast beam are arranged below the supporting frames, a bearing platform is arranged at the lower ends of the supporting springs, and a jacking mechanism used for adjusting the camber of the workbench is arranged on the bearing platform. The device is rational in infrastructure, easy and simple to handle, can adjust the camber of precast beam workstation through adjusting the shore mechanism, effectively guarantees the construction quality of precast beam on the workstation, but the device's operation is comparatively loaded down with trivial details, consequently needs improve the device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a precast beam construction platform of camber adjustable in advance has solved the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a precast beam construction platform with adjustable pre-camber comprises a workbench, wherein supporting legs are arranged on the left side and the right side of the lower surface of the workbench, first fixing plates are arranged on the front side and the rear side of the upper surface of the workbench, the middle part of the first fixing plate is rotatably connected with the front end and the rear end of a screw rod, the front side and the rear side of the screw rod are in threaded connection with the middle part of a first sliding block, the upper part of the first sliding block is rotatably connected with the lower end of a supporting rod, the upper end of the supporting rod is rotatably connected with the lower part of a second sliding block, the middle part of the second sliding block is slidably connected with a third guide rod, the front end and the rear end of the third guide rod are fixedly connected with a third fixing plate, the upper end of the third fixing plate is fixedly connected with a top plate, a second fixing plate is arranged on the front side of the lower surface of the workbench, a first guide rod is arranged, the first bevel gear is meshed with the second bevel gear, and the second bevel gear is fixedly connected with the front end of the screw rod.

As an optimal technical scheme of the utility model, the upper portion of dwang is equipped with the limiting plate, is equipped with the spring between limiting plate and the sliding seat.

As an optimized technical scheme of the utility model, the dwang outside is located to the spring housing.

As an optimized technical scheme of the utility model, the lower extreme of dwang is equipped with the runner.

As an optimized technical scheme of the utility model, both sides are equipped with the opposite screw thread of direction of rotation around the lead screw.

As a preferred technical scheme of the utility model, both ends are equipped with the second guide bar around the roof, the upper portion of the first fixed plate of lower extreme sliding connection of second guide bar.

The utility model discloses have following useful part:

the utility model is suitable for a precast beam construction platform of camber adjustable in advance drives the dwang through setting up a sliding seat that can the horizontal slip and removes to make this device only need control a dwang can, reduced the operation degree of difficulty of whole device, and the use of also device convenient more, suitable using widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a precast beam construction platform with adjustable pre-camber.

Fig. 2 is a front view of a precast beam construction platform with adjustable pre-camber.

Fig. 3 is a partially enlarged schematic view of a in fig. 1.

Fig. 4 is a schematic structural diagram of a support rod in a precast beam construction platform with adjustable pre-camber.

In the figure: 1. supporting legs; 2. a work table; 3. a first fixing plate; 4. a second fixing plate; 5. a first guide bar; 6. a sliding seat; 7. a rotating wheel; 8. rotating the rod; 9. a spring; 10. a limiting plate; 11. a first bevel gear; 12. a second bevel gear; 13. a screw rod; 14. a first slider; 15. a support bar; 16. a second guide bar; 17. a third fixing plate; 18. a third guide bar; 19. a second slider; 20. a top plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1-4, a precast beam construction platform with adjustable pre-camber comprises a workbench 2, supporting legs 1 are arranged on the left and right sides of the lower surface of the workbench 2, first fixing plates 3 are arranged on the front and rear sides of the upper surface of the workbench 2, the middle of each first fixing plate 3 is rotatably connected with the front and rear ends of a screw rod 13, threads with opposite rotation directions are arranged on the front and rear sides of each screw rod 13, the front and rear sides of each screw rod 13 are in threaded connection with the middle of a first sliding block 14, the upper part of each first sliding block 14 is rotatably connected with the lower end of a supporting rod 15, the upper end of each supporting rod 15 is rotatably connected with the lower part of a second sliding block 19, the middle of each second sliding block 19 is slidably connected with a third guide rod 18, the front and rear ends of each third guide rod 18 are fixedly connected with a third fixing plate 17, the upper end of each third fixing plate 17 is fixedly connected with a top plate 20, a second fixing plate 4 is, the middle part sliding connection sliding seat 6 of first guide bar 5, the middle part of dwang 8 is run through to the front side of sliding seat 6, the upper end of dwang 8 is equipped with first bevel gear 11, first bevel gear 11 meshing connection second bevel gear 12, the front end of second bevel gear 12 fixed connection lead screw 13, the upper portion of dwang 8 is equipped with limiting plate 10, be equipped with spring 9 between limiting plate 10 and the sliding seat 6, the dwang 8 outside is located to the spring 9 cover, the lower extreme of dwang 8 is equipped with runner 7.

Example two

Referring to fig. 4, the other contents of the present embodiment are the same as those of the first embodiment, except that: the front end and the rear end of the top plate 20 are provided with second guide rods 16, the lower ends of the second guide rods 16 are slidably connected with the upper part of the first fixing plate 3, and in order to improve the lifting stability of the top plate 20, the second guide rods 16 are arranged between the top plate 20 and the first fixing plate 3, so that the influence of lateral force on the device is reduced through the second guide rods 16.

In the implementation process of the utility model, the precast beam is placed on the upper portion of the top plate 20, the placing stability of the precast beam is ensured, at the moment, the rotating wheel 7 is rotated, the rotating wheel 7 drives the rotating rod 8 to rotate, the rotating rod 8 drives the first bevel gear 11 to rotate, the first bevel gear 11 drives the second bevel gear 12 to rotate, the second bevel gear 12 drives the screw rod 13 to rotate, because the front side and the back side of the screw rod 13 are provided with threads with opposite rotating directions, two first sliders 14 are enabled to move close to each other, the first slider 14 drives two supporting rods 15 to rotate mutually, so that the second slider 19 moves upwards, thereby pushing the top plate 20 upwards, realizing the pre-camber adjusting effect, after one top plate 20 is adjusted, the rotating rod 8 can be pulled downwards, the rotating rod 8 drives the first bevel gear 11 to move downwards, thereby separating the first bevel gear 11 from the second bevel gear 12, at this time, the sliding seat 6 can be moved left and right, the first bevel gear 11 is moved to the lower part of the second bevel gear 12 corresponding to the top plate 20 to be adjusted, the rotating rod 8 is loosened, and under the action of the spring 9, the rotating rod 8 moves upwards, so that the first bevel gear 11 is meshed with the second bevel gear 12 again, and at this time, the top plate 20 can be adjusted; the utility model is suitable for a precast beam construction platform of camber adjustable in advance drives dwang 8 through setting up a sliding seat 6 that can the horizontal slip and removes to make this device only need control a dwang 8 can, reduced the operation degree of difficulty of whole device, and the use of device also more convenient, suitable using widely.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The precast beam construction platform with the adjustable pre-camber comprises a workbench (2), wherein supporting legs (1) are arranged on the left side and the right side of the lower surface of the workbench (2), and is characterized in that first fixing plates (3) are arranged on the front side and the rear side of the upper surface of the workbench (2), the middle of each first fixing plate (3) is rotated to connect the front end and the rear end of a screw rod (13), the front side and the rear side of each screw rod (13) are in threaded connection with the middle of a first sliding block (14), the upper portion of each first sliding block (14) is rotated to connect the lower end of a supporting rod (15), the upper end of each supporting rod (15) is rotatably connected with the lower portion of a second sliding block (19), the middle of each second sliding block (19) is slidably connected with a third guide rod (18), the front end and the rear end of each third guide rod (18) are fixedly connected with a third fixing plate (17), the upper end of each third fixing plate (17) is fixedly connected with, the middle part of second fixed plate (4) is equipped with first guide bar (5), the middle part sliding connection sliding seat (6) of first guide bar (5), the middle part of the front side through connection dwang (8) of sliding seat (6), the upper end of dwang (8) is equipped with first bevel gear (11), second bevel gear (12) are connected in the meshing of first bevel gear (11), the front end of second bevel gear (12) fixed connection lead screw (13).

2. The precast beam construction platform with adjustable pre-camber according to claim 1, wherein a limiting plate (10) is provided on the upper portion of the rotating rod (8), and a spring (9) is provided between the limiting plate (10) and the sliding seat (6).

3. The precast beam construction platform with adjustable pre-camber according to claim 2, wherein the spring (9) is sleeved outside the rotating rod (8).

4. The precast beam construction platform with adjustable pre-camber according to claim 2, wherein the lower end of the rotating rod (8) is provided with a rotating wheel (7).

5. The precast beam construction platform with adjustable pre-camber according to claim 1, wherein the screw rods (13) are provided with threads with opposite directions of rotation at front and rear sides thereof.

6. The precast beam construction platform with adjustable pre-camber according to claim 1, wherein the top plate (20) is provided at front and rear ends thereof with second guide rods (16), and lower ends of the second guide rods (16) are slidably coupled to the upper portion of the first fixing plate (3).