CN210718943U

CN210718943U - Caliper for measuring steel bar protective layer

Info

Publication number: CN210718943U
Application number: CN201922155911.2U
Authority: CN
Inventors: 唐永; 臧明亮; 王洪志; 程洪超; 赵迎春
Original assignee: CCCC Fourth Highway Engineering Co Ltd
Current assignee: CCCC Fourth Highway Engineering Co Ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-06-09
Anticipated expiration: 2029-12-04

Abstract

The utility model relates to a measuring caliper for a steel bar protective layer, which comprises an outer pipe and an inner pipe, wherein the front end of the outer pipe is provided with a conical tip, and a chute penetrating through the wall of the outer pipe is longitudinally arranged along the outer pipe from the front end to the rear end; one part of the inner tube is movably inserted in the outer tube, the other part of the inner tube is positioned outside the outer tube and used as a handle, the front end of the part positioned in the outer tube is provided with a claw, and the claw is protruded out of the outer tube from a sliding groove on the outer tube; be equipped with the length scale on the inner tube outer wall, under the state that the outer tube front end was inserted to the inner tube front end, the length scale on the inner tube just was located the outer tube completely, and the outer wall of inner tube flushes the department with the outer tube rear end and is the starting point of length scale. The utility model is used for measure the reinforcing bar protective layer, compare and measure in traditional tape measure, work efficiency can promote 4-5 times, and measure more accurately.

Description

Caliper for measuring steel bar protective layer

Technical Field

The utility model relates to a yardstick measuring tool, concretely relates to slide caliper rule for measuring protective layer of reinforcing bar.

Background

The reinforcing steel bar protective layer is a concrete layer outside the outermost reinforcing steel bar in the reinforced concrete member, and has the functions of protecting the reinforcing steel bar from being corroded by external air, water and the like, ensuring the safety and durability of the reinforcing steel bar and ensuring that the reinforcing steel bar and the concrete can be better stressed together.

The thickness of the steel bar protection layer is precisely calculated during structural design, and the steel bar protection layer cannot be too thick or too thin. The protective layer is too thick, so that the burden of the protective layer is increased, the stress condition of a component is influenced, and the concrete is easy to generate transverse cracks, so that the firmness is influenced; air can permeate into the concrete with the protective layer too thin, and the protective layer and the concrete are subjected to carbonization reaction, so that the anchoring force of the concrete and the reinforcing steel bar is reduced, the action of resisting axial force and bending moment of the component is reduced, and the service life of the component is shortened.

In order to ensure that the thickness of a steel bar protection layer of a reinforced concrete member meets the design requirement, in the construction process, after a template is installed and a steel bar framework is bound, the distance from the outermost steel bar to the inner wall of the template needs to be measured, the most used method at present is to use a steel ruler or a tape measure for measurement, because the ruler is soft, the front section shakes greatly, and particularly when the measurement depth is large, the measurement precision is difficult to ensure; the large-scale member has many measuring points and large workload, the measuring work of only one beam section needs to consume several hours, the working efficiency is low, and the construction progress is influenced.

Disclosure of Invention

The utility model aims at providing a quick, the high protective layer of steel bar measurement slide caliper rule of measurement rate to the problem that current measuring tool measurement of efficiency is low, measurement accuracy is poor.

The technical scheme of the utility model as follows:

the utility model provides a protective layer of reinforcing bar measures slide caliper rule which characterized in that: comprises an outer pipe and an inner pipe; the front end of the outer pipe is provided with a conical tip, and a sliding chute penetrating through the wall of the outer pipe is longitudinally arranged along the outer pipe from the front end to the rear end; one part of the inner pipe is movably inserted into the outer pipe from the rear end of the outer pipe, the other part of the inner pipe is positioned outside the outer pipe and serves as a handle, and a claw is arranged at the front end of the part positioned inside the outer pipe and protrudes out of the outer pipe from a sliding groove in the outer pipe; the length scale is longitudinally arranged on the outer wall of the inner pipe along the inner pipe, the length scale on the inner pipe is just completely positioned in the outer pipe in the state that the front end of the inner pipe is inserted into the front end of the outer pipe, and the position where the outer wall of the inner pipe is flush with the rear end of the outer pipe is the starting point of the length scale.

The utility model discloses simple structure, inner tube and outer tube adopt building site abandonment PVC tubular product can make, and convenient to use compares in traditional tape measure detection mode, and work efficiency can promote 4-5 times, and detection mode is standardized, makes the reading more accurate, and the error is littleer.

Drawings

Fig. 1 is a schematic top view of the present invention;

fig. 2 is a schematic side view of the present invention.

Detailed Description

As shown in fig. 1 and 2, comprises an outer pipe 1 and an inner pipe 2; the front end of the outer tube 1 is provided with a conical tip 11, and a sliding groove 12 penetrating through the outer tube wall is longitudinally arranged along the outer tube from the front end to the rear end; one part of the inner tube 2 is movably inserted into the outer tube from the rear end of the outer tube 1, the other part of the inner tube is positioned outside the outer tube and used as a handle, the front end of the part positioned inside the outer tube is provided with a claw 21, and the claw 21 is protruded out of the outer tube 1 from a sliding groove 12 on the outer tube; the outer wall of the inner pipe 2 is longitudinally provided with length scales 22 along the inner pipe, the length scales 22 on the inner pipe are just completely positioned in the outer pipe under the condition that the front end of the inner pipe 2 is inserted into the front end of the outer pipe 1, the position where the outer wall of the inner pipe is flush with the rear end of the outer pipe is the starting point of the length scales, and the scale marks at the position are 0.

The utility model discloses during the implementation, jack catch 21 can adopt a right-angle triangle-shaped board, a right-angle side and 2 fixed connection of inner tube, and its hypotenuse aligns towards 1 front end of outer tube, the most advanced and the reinforcing bar outward flange of triangle-shaped of being convenient for. The scale takes millimeter as a unit, the length of the chute is set to be 120mm according to the thickness of the common maximum steel bar protection layer, and the measuring range of the caliper is 0-120 mm.

The utility model discloses when using, hold the outer tube on the one hand, hold the inner tube handle on the other hand, with the awl point top of slide caliper rule on the template inner wall, slide caliper rule and template keep the vertical state, push-and-pull handle makes the most advanced of graduated flask and the outward flange contact of outermost reinforcing bar, and the length scale that exposes outside of the outer tube on the inner tube this moment is reinforcing bar protective layer thickness promptly, reads the scale reading, accomplishes a measurement promptly.

Claims

1. The utility model provides a protective layer of reinforcing bar measures slide caliper rule which characterized in that: comprises an outer pipe and an inner pipe; the front end of the outer pipe is provided with a conical tip, and a sliding chute penetrating through the wall of the outer pipe is longitudinally arranged along the outer pipe from the front end to the rear end; one part of the inner pipe is movably inserted into the outer pipe from the rear end of the outer pipe, the other part of the inner pipe is positioned outside the outer pipe and serves as a handle, and a claw is arranged at the front end of the part positioned inside the outer pipe and protrudes out of the outer pipe from a sliding groove in the outer pipe; the length scale is longitudinally arranged on the outer wall of the inner pipe along the inner pipe, the length scale on the inner pipe is just completely positioned in the outer pipe in the state that the front end of the inner pipe is inserted into the front end of the outer pipe, and the position where the outer wall of the inner pipe is flush with the rear end of the outer pipe is the starting point of the length scale.

2. The protective layer measuring caliper for reinforcing bar according to claim 1, wherein: the jack catch is a right-angle triangular plate, the bevel edge of the jack catch faces the front end of the outer pipe, and a right-angle edge is fixedly connected with the inner pipe.