CN218726089U

CN218726089U - Prestressed concrete performance testing device

Info

Publication number: CN218726089U
Application number: CN202222834872.0U
Authority: CN
Inventors: 郝晋升; 左恩胜; 李艳敏
Original assignee: Xi'an Datum Fangzhong Architectural Design Co ltd
Current assignee: Xi'an Datum Fangzhong Architectural Design Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-03-24
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a prestressed concrete capability test device belongs to concrete capability test technical field. This prestressed concrete capability test device includes: the rotary structure comprises a friction plate, a cylinder, a screw, a first nut and a lantern ring, the friction plate is abutted against the upper surface of the plate body, the friction plate is fixedly connected with the lower end face of the cylinder, the inner wall of the cylinder is connected with the lower end of the screw in an up-and-down sliding manner, the screw is in threaded connection with the first nut, an annular groove is formed in the outer wall of the first nut, and the annular groove is connected with the lantern ring in a sliding manner; and the lower extreme of screw rod is fixed and is equipped with pressure sensor, and pressure sensor electric connection controller and bee calling organ. The prestressed concrete performance testing device is simple to install, convenient to carry and compact in structure, is suitable for being moved to a construction site to carry out spot inspection on the prefabricated plate body 6, and guarantees construction quality and building quality.

Description

Prestressed concrete performance testing device

Technical Field

The utility model relates to a concrete capability test technical field, concretely relates to prestressed concrete capability test device.

Background

The prestressed concrete is a concrete member, mainly used in building engineering and bridge engineering. The working principle of the method is that the pre-stress is used for reducing or offsetting the tensile stress of the concrete caused by the load, so that the tensile stress of the structural member is controlled in a smaller range and even in a pressed state, the occurrence and development of concrete cracks are delayed, and the crack resistance and the rigidity of the member are improved.

The prefabricated prestressed concrete plates (hereinafter referred to as plates for short) are commonly used in the building construction process, and because the quantity of the prefabricated plates is large, the quality detection needs to be carried out on the plates in order to ensure the building quality, the conventional prestressed concrete performance testing device has a complex structure and a large shape, and is not easy to assemble and carry on a construction site.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the problem among the prior art, provide a prestressed concrete capability test device.

The utility model provides a prestressed concrete performance testing arrangement, include: the rotary structure comprises a friction plate, a cylinder, a screw, a first nut and a lantern ring, the friction plate is abutted against the upper surface of the plate body, the friction plate is fixedly connected with the lower end face of the cylinder, the inner wall of the cylinder is connected with the lower end of the screw in an up-and-down sliding manner, the screw is in threaded connection with the first nut, an annular groove is formed in the outer wall of the first nut, and the annular groove is connected with the lantern ring in a sliding manner; the lower end of the screw rod is fixedly provided with a pressure sensor which is electrically connected with the controller and the buzzer; each traction structure comprises a U-shaped clamp and a traction rope, the two U-shaped clamps are used for clamping two opposite ends of the plate body, and the traction rope is used for connecting the U-shaped clamps and the lantern ring.

Preferably, the inner wall of barrel is equipped with the spacing groove, and the spacing groove slides from top to bottom and is equipped with the limiting plate, and the width in spacing groove is greater than the thickness of limiting plate.

Preferably, only the first ear plate is arranged on the two opposite sides of the lantern ring, the second ear plate is arranged on the U-shaped clamp, and the first ear plate is connected with the second ear plate through a traction rope.

Preferably, through holes are formed in two opposite side walls of the U-shaped clamp, bolts penetrate through the through holes, penetrate through the preformed holes in the plate body and are in threaded connection with the second nuts.

Preferably, the traction rope is sleeved with a sleeve, and the sleeve is connected to the lantern ring through a connecting rope.

Preferably, both sides of the first nut are fixedly connected with fixing rods.

Preferably, the two U-shaped clamps are positioned at the lower part of the plate body and are connected through a twisted rope.

Compared with the prior art, the beneficial effects of the utility model are that: the screw rod continuously rotates and has a tendency of driving the first nut to rotate, because two sides of the first nut are dragged by the traction rope, the rotation of the first nut is limited, the first nut moves upwards and pulls the two U-shaped clamps, because the first nut moves upwards, the screw rod has a tendency of moving downwards relative to the first nut, when the screw rod moves downwards, the pressure sensor, the friction plate and the plate body are extruded, the plate body has a deformation tendency that two ends of the plate body tilt upwards, the pressure sensor is pressed and transmits a pressure value to the controller, when the detected pressure value is equal to a preset pressure value, the controller controls the buzzer to act, the buzzer gives an alarm, at the moment, the screw rod stops rotating, and after the plate body is observed to bear specific pressure, whether the plate body structure generates visible changes, such as cracks, fracture and damage, if the plate body does not generate the damage, the bending resistance and the compression resistance of the plate body are good, and if one or more of the plate bodies generate the damage, the performance of the plate body is judged to be not in accordance with the requirements. The prestressed concrete performance testing device is simple to install, convenient to carry and compact in structure, is suitable for being moved to a construction site to carry out spot inspection on the prefabricated plate body, and guarantees construction quality and building quality.

Drawings

Fig. 1 is a side view of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is an enlarged view at A;

fig. 4 is a schematic diagram of the use of a ragger rope.

Description of the reference numerals:

1. the novel pressure sensor comprises a friction plate, a cylinder body 2, a screw rod 3, a first nut 4, a lantern ring 5, a plate body 6, a pressure sensor 7, a U-shaped clamp 8, a traction rope 9, a limiting plate 10, a first lug plate 11, a second lug plate 12, a bolt 13, a second nut 14, a sleeve 15, a fixing rod 16 and a stranded rope 17.

Detailed Description

The following detailed description of the embodiments of the present invention is provided, but it should be understood that the scope of the present invention is not limited by the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a pair of prestressed concrete capability test device, include as shown in fig. 1-4: the rotary structure comprises a friction plate 1, a barrel body 2, a screw rod 3, a first nut 4 and a lantern ring 5, wherein the friction plate 1 abuts against the upper surface of a plate body 6, the friction plate 1 is fixedly connected with the lower end surface of the barrel body 2, the inner wall of the barrel body 2 is connected with the lower end of the screw rod 3 in a vertically sliding mode, the screw rod 3 is connected with the first nut 4 in a threaded mode, an annular groove is formed in the outer wall of the first nut 4, and the annular groove is connected with the lantern ring 5 in a sliding mode; a pressure sensor 7 is fixedly arranged at the lower end of the screw rod 3, and the pressure sensor 7 is electrically connected with the controller and the buzzer; each traction structure comprises a U-shaped clamp 8 and a traction rope 9, the U-shaped clamps 8 are used for clamping two opposite ends of the plate body 6, and the traction rope 9 is used for connecting the U-shaped clamps 8 and the lantern ring 5.

The screw 3 is continuously rotated, the screw 3 has a tendency of driving the first nut 4 to rotate, the rotation of the first nut 4 is limited due to the fact that two sides of the first nut 4 are pulled by the pulling rope 9, meanwhile, the first nut 4 moves upwards, and the two U-shaped clamps 8 are pulled, the screw 3 has a tendency of moving downwards relative to the first nut 4 due to the fact that the first nut 4 moves upwards, the pressure sensor 7, the friction plate 1 and the plate body 6 are squeezed when the screw 3 moves downwards, the plate body 6 has a deformation tendency that two ends of the plate body are tilted upwards, the pressure sensor 7 is pressed and transmits a pressure value to the controller, when the detected pressure value is equal to a preset pressure value, the controller controls the buzzer to act to give an alarm, at the moment, the screw 3 stops rotating, and whether the plate body structure is subjected to macroscopic changes such as cracks, fractures and damages are generated or not after the plate body 6 is subjected to specific pressure, if the plate body 6 is not subjected to the damages, the bending resistance and the compression resistance of the plate body 6 are determined to be good, and if one or more of the damages are generated, the plate body 6 is determined, and the performance requirements of the plate 6 are not met.

The prestressed concrete performance testing device is simple to install, convenient to carry and compact in structure, is suitable for being moved to a construction site to carry out spot inspection on the prefabricated plate body 6, and guarantees construction quality and building quality.

Preferably, as shown in fig. 1 to 3, the inner wall of the barrel 2 is provided with a limiting groove, the limiting groove is provided with a limiting plate 10 in a vertical sliding manner, and the width of the limiting groove is greater than the thickness of the limiting plate 10.

The purpose is to prevent the barrel 2 and the screw 3 from slipping.

Preferably, as shown in fig. 1-3, only the first ear plate 11 is provided on the opposite sides of the collar 5, the second ear plate 12 is provided on the u-shaped clip 8, and the first ear plate 11 and the second ear plate 12 are connected by the pulling rope 9.

Preferably, through holes are formed in two opposite side walls of the U-shaped clamp 8 as shown in fig. 1-2, a bolt 13 is inserted into the through holes, the bolt 13 simultaneously penetrates through a preformed hole in the plate body 6, and the bolt 13 is in threaded connection with a second nut 14.

The aim is to prevent the clevis 8 from slipping off the plate body 6 after being subjected to a tensile force.

Preferably, as shown in fig. 1, the pulling rope 9 is sleeved with a sleeve 15, and the sleeve 15 is connected to the lantern ring 5 through a connecting rope.

Aim at prevents this prestressed concrete capability test device haulage rope 9 fracture suddenly in the use to prevent that the whipping in-process takes place to hinder the people incident after 9 fracture.

Preferably, a fixing rod 16 is fixedly connected to both sides of the first nut 4 as shown in fig. 2.

The inspection person manually rotates the fixing lever 16 to rotate the screw 3.

Preferably, as shown in fig. 4, the two said clevises 8 are connected by a twisted rope 17 at the lower part of the plate body 6.

As another embodiment, when it is not convenient to punch a hole in the plate body 6 or the plate body 6 cannot be punched, the twisted string 17 is used to restrict the two clevis members 8 from slipping off, and the bolt 13 and the second nut 14 are not used.

The utility model discloses a prestressed concrete capability test device's application method as follows:

the friction plate 1 is placed in the middle above a plate body 6 to be detected, two U-shaped clamps 8 are fixedly clamped at two ends of the plate body 6 through bolts 13 and second nuts 14, a fixing rod 16 is manually and continuously rotated, the first nut 4 has an upward moving trend, the screw 3 has a downward moving trend, the screw 3 extrudes the pressure sensor 7 and the friction plate 1 and the plate body 6 when moving downwards, so that the plate body 6 has a deformation trend that two ends of the plate body 6 are tilted upwards, the pressure sensor 7 is pressed and transmits a pressure value to the controller, when the detected pressure value is equal to a preset pressure value, the controller controls the buzzer to act, the buzzer gives an alarm, the screw 3 stops rotating at the moment, and whether the plate body structure is subjected to visible changes by naked eyes after the plate body 6 is subjected to specific pressure is observed, such as cracks, fracture and breakage are generated, if the plate body 6 is not damaged, the bending resistance and the compression resistance of the plate body 6 are good, and if one or more of the plate body 6 is damaged, the performance of the plate body 6 is judged to be not in accordance with requirements.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A prestressed concrete performance test device is characterized by comprising:

the rotary structure comprises a friction plate (1), a cylinder (2), a screw (3), a first nut (4) and a lantern ring (5), wherein the friction plate (1) abuts against the upper surface of a plate body (6), the friction plate (1) is fixedly connected with the lower end face of the cylinder (2), the inner wall of the cylinder (2) is connected with the lower end of the screw (3) in a vertically sliding mode, the screw (3) is connected with the first nut (4) in a threaded mode, an annular groove is formed in the outer wall of the first nut (4), and the annular groove is connected with the lantern ring (5) in a sliding mode; a pressure sensor (7) is fixedly arranged at the lower end of the screw (3), and the pressure sensor (7) is electrically connected with the controller and the buzzer;

the two traction structures respectively comprise a U-shaped clamp (8) and a traction rope (9), the two U-shaped clamps (8) are used for clamping two opposite ends of the plate body (6), and the traction rope (9) is used for connecting the U-shaped clamps (8) and the lantern ring (5).

2. The prestressed concrete performance testing device according to claim 1, wherein the inner wall of the barrel (2) is provided with a limiting groove, the limiting groove is provided with a limiting plate (10) in a vertical sliding manner, and the width of the limiting groove is greater than the thickness of the limiting plate (10).

3. The prestressed concrete performance testing device according to claim 1, wherein only the first ear plate (11) is provided on the opposite sides of the collar (5), the second ear plate (12) is provided on the clevis (8), and the first ear plate (11) and the second ear plate (12) are connected by the pulling rope (9).

4. The prestressed concrete performance testing device according to claim 1, wherein through holes are formed in two opposite side walls of the U-shaped clamp (8), a bolt (13) penetrates through the through holes, the bolt (13) penetrates through a prepared hole in the plate body (6) at the same time, and the bolt (13) is in threaded connection with the second nut (14).

5. The prestressed concrete behavior testing arrangement of claim 1, characterized by that, the said hauling cable (9) is fitted with the thimble (15), the thimble (15) is connected to lantern ring (5) through connecting the rope.

6. The prestressed concrete behavior testing arrangement according to claim 1, characterized in that, the first nut (4) is fixedly connected with dead lever (16) on both sides.

7. The prestressed concrete performance testing device according to claim 1, wherein the two said U-shaped clamps (8) are connected by a twisted rope (17) at the lower part of the plate body (6).