CN220932237U

CN220932237U - Anchor bolt drawing detection device

Info

Publication number: CN220932237U
Application number: CN202322469966.7U
Authority: CN
Inventors: 李会栓; 崔莹; 许建国; 徐茂轩; 张宏武; 张阳
Original assignee: Zkha Energy Technology Beijing Co ltd; China Railway Baoji Railway Electrical Equipment Co Ltd; Third Engineering Co Ltd of China Railway Electrification Engineering Group Co Ltd
Current assignee: Zkha Energy Technology Beijing Co ltd; China Railway Baoji Railway Electrical Equipment Co Ltd; Third Engineering Co Ltd of China Railway Electrification Engineering Group Co Ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-05-10
Anticipated expiration: 2033-09-12

Abstract

The utility model relates to a detection device, in particular to a drawing force detection device for embedded bolts, which comprises a shell, wherein a pressure sensor with a central opening for an anchor bolt to pass through and a data processing unit capable of displaying the numerical value of the pressure sensor are arranged in the shell; due to the fact that the spherical surface component is matched with the spherical surface of the shell, the angle adjustment of the hole axis (namely the anchor bolt axis) on the shell and the pressure sensor is achieved, and accordingly uneven foundation surfaces and abdication of the dense anchor bolts are adapted.

Description

Anchor bolt drawing detection device

Technical Field

The utility model relates to a detection device, in particular to a drawing force detection device for embedded bolts.

Background

The anchor bolt is used as an embedded part to be arranged in a foundation and used as a connecting part to install an external component, for example, the anchor bolt is used as a suspension foundation of an overhead contact system in a tunnel, and the stability and the reliability of the anchor bolt are directly related to the safety of line operation. The standard therefore specifies that a pull test must be performed on the chemical anchor in the tunnel. The vast majority of the prior art adopts hydraulic equipment to detect the drawing force when carrying out the drawing test on the anchor bolt, the equipment is heavy and inconvenient to operate, and the equipment is not safe, time-consuming, labor-consuming and low in efficiency. Therefore, a detection device for converting torsion into drawing force appears, the nut screwed onto the anchor bolt is screwed, the torsion is converted into drawing force through threaded fit to detect the drawing force of the embedded bolt, as disclosed in patent 202020685036.9, a portable intelligent anchoring drawing detector and a system thereof, the drawing force detection is realized through screwing a screwing piece and a sleeve which are clamped at two ends of the pressure detection device, the base is propped against the foundation during operation, the screwing piece is screwed so that the screwing piece is matched with the sleeve to clamp the pressure detection device, the clamping force can reflect the drawing force, and the drawing force of the anchor bolt is detected, but the detection device can not adjust the angle relative to the shell, so that the basic requirement on the anchor bolt is higher, the detection can be implemented only in a larger plane, the detection on a denser area of the anchor bolt piece is inconvenient, and especially the detection of the anchor bolt on the arch surface in a tunnel is difficult.

Disclosure of utility model

In order to solve the defects in the prior art, the utility model provides a drawing force detection device capable of adjusting the angles of a detection part and a bearing part and adapting to the detection of the drawing force of an anchor bolt under more environments, which adopts the following technical scheme:

The utility model provides an crab-bolt pulling force detection device, includes the casing in be provided with the centre trompil and can supply the pressure sensor that the crab-bolt passed and can show the data processing unit of pressure sensor numerical value the casing in still be provided with fixed pressure sensor and with casing sphere cooperation can self-adaptation adjustment casing and pressure sensor on trompil axis contained angle and can supply the sphere subassembly that the crab-bolt passed.

Further, the device also comprises a torque multiplier and an adapter which is in threaded connection with the anchor bolt and matched with the torque multiplier to apply pressure to one side of the pressure sensor, and a limiting piece for limiting a stop lever of the torque multiplier is arranged on the shell.

Further, the device also comprises a sleeve which can be sleeved on the anchor bolt, one end of the sleeve is propped against the foundation embedded in the anchor bolt, and the other end of the sleeve is propped against a pressure sensor opposite to one side of the adapter for pressing.

Furthermore, compression rings are arranged on two sides of the pressure sensor.

Further, a sleeve is arranged in the opening of the pressure sensor, a flange forming a pressing ring is arranged at one end of the sleeve, and the pressing ring relative to one end of the flange can move along the axial direction of the sleeve.

Further, a limiting structure for limiting the pressure sensor to rotate along the axis of the opening is arranged in the shell.

Further, at least one ball seat matched with one end of the spherical component is arranged in the shell.

Further, the spherical assembly includes a pair of hemispheres, and the pressure sensor is disposed between the hemispheres.

Further, the spherical surface component is a sphere with a through hole at the center for installing the pressure sensor.

Further, a lock pin capable of locking the adapter to move along the axial direction is arranged on the torque multiplier.

Furthermore, a bearing is arranged on the inner ring of the spherical assembly.

According to the drawing force detection device, the pressure sensor mainly used for detecting the drawing force is movably arranged in the bearing part formed by the shell through the detection part formed by the spherical surface component, and the angle adjustment of the hole axis (namely the anchor bolt axis) on the shell and the pressure sensor can be realized through spherical surface matching, so that the device is suitable for uneven foundation surfaces and abdication of an intensive anchor bolt.

Drawings

FIG. 1 is a schematic diagram of a drawing detection device;

FIG. 2 is a schematic diagram of a drawing inspection apparatus equipped with a torque multiplier;

FIG. 3 is an exploded view of the pull-out inspection device;

FIG. 4 is a cross-sectional view of the drawing inspection apparatus;

Fig. 5 is a schematic diagram of the stress of the pressure sensor in a state of detecting the pulling force.

Detailed Description

The drawing detection device shown in fig. 1 comprises a shell 1, wherein the shell 1 comprises a bearing part 1-1 and a display part 1-2, the display part 1-2 is arranged on one side of the bearing part 1-1 in a handle shape, a detection part is arranged in the bearing part 1-1, and the detection part forms a structure similar to a joint bearing through movable fit of a spherical surface and the shell 1, so that the shell 1 can adaptively perform angle adjustment, thereby avoiding that the shell 1 influences anchor bolt drawing detection under the condition of uneven foundation surface or causes display part damage in drawing detection, and enabling the display part to avoid denser anchor bolts through the angle adjustment.

As shown in fig. 2 to 4, the above-mentioned detecting portion includes a pressure sensor 2 and a spherical component 4 for fixing the pressure sensor 2, specifically in this embodiment, the spherical component 4 includes two hemispheres 4-1, the two hemispheres 4-1 cooperate to clamp and fix the pressure sensor 2 between the two hemispheres 4-1, in order to detect the pulling force of the anchor bolt, through holes are formed on the pressure sensor 2 and the two hemispheres 4-1, wherein the inner diameter of the through hole on the two hemispheres 4-1 is larger to expose the pressed sensing portion of the pressure sensor 2, and then the pressed sensing portion of the pressure sensor 2 can detect the pulling force in the process of detecting the anchor bolt. Besides the clamping and fixing by the semi-ball head 4-1 in this embodiment, the whole ball head can be used as a spherical component, and a through hole is formed in the ball head to mount the pressure sensor 2.

In order to facilitate the matching of the spherical component 4 and the shell 1 to realize angle adjustment, a ball seat 11 matched with the hemispherical head 4-1 is arranged in the shell 1, in this embodiment, only one ball seat 11 is arranged, and the hemispherical head 4-1 at the other end is matched with the arc-shaped concave surface 1-3 arranged on the shell 1, so that besides the matching mode given in the embodiment, the ball seat 11 can be added to enable the two hemispherical heads 4-1 to be installed in the shell 1 through the ball seat 11 or enable the two hemispherical heads 4-1 to be matched with the shell 1 through the arc-shaped concave surface.

In order to display the numerical value of the pressure sensor 2, a data processing unit 3 is further provided, the data processing unit 3 is arranged at the display part 1-2 of the shell 1, the data processing unit 3 comprises a display screen and a data processing circuit and a power supply, the data processing circuit is connected with the pressure sensor 2 to acquire signals of the pressure sensor 2 and display corresponding pressure data in the display screen after processing, therefore, the data processing unit 3 and the pressure sensor 2 are in signal transmission through a wire connection, the pressure sensor 2 is fixed in the spherical assembly 4, the shell 1 can be movably adjusted relative to the spherical assembly 4, the data processing unit 3 and the pressure sensor 2 are connected through wires, therefore, the shell 1 can only be adjusted in a small range (such as the included angle between the shell and the central hole axis of the pressure sensor is adjusted or the small range is rotated along the axis), the shell 1 cannot be rotated along the central hole axis of the pressure sensor 2, thus the wire is broken, the rotation of the shell 1 cannot bring better technical effects to the whole detection device, if the whole detection device can be rotated in a large range, and the whole detection device can not only be rotated if the shell 1 is required. It is therefore preferable to provide a limit structure in the housing 1 to prevent the housing 1 from rotating relative to the pressure sensor along the axis of the central hole of the pressure sensor, and as shown in fig. 2 and 3, a protrusion 2-1 may be provided on the pressure sensor 2 to extend into the display portion, and the protrusion 2-1 leaves a certain gap between the axial direction and the radial direction of the pressure sensor 2 and the inner wall of the housing 1, so that the rotation of the housing 1 relative to the pressure sensor 2 is blocked by the limit of the protrusion 2-1 without affecting the angular adjustment of the housing 1.

Because the pressure sensor 2 is arranged in the middle of the spherical assembly 4, in order to better transmit stress to the pressure sensor 2, a pair of pressing rings 9 capable of relatively moving are arranged in the spherical assembly 4, and the pair of pressing rings 9 are contacted with the force application assembly more conveniently through the receiving surface of the pressure sensor 2, so that pressure detection drawing force is applied to the pressure sensor 2. In this embodiment, a sleeve 10 is provided through the central hole of the pressure sensor 2, and a flange 10-1 is provided on one side of the sleeve 10 as one of the compression rings 9, and the compression ring 9 on the other side can move axially along the compression ring 9 (i.e. the compression ring on the other side is sleeved on the sleeve).

The crab-bolt passes sphere subassembly 4 and pressure sensor 2 centre bore one end coupling nut, make the nut top lean on clamping ring 9 through the screw nut, further screw the nut along crab-bolt axial displacement and exert pressure to the clamping ring, screw the nut and will make pressure sensor 2 both sides clamping ring 9 form the opposition after opposite side clamping ring top leans on the basis, thereby exert pressure to pressure sensor 2, and then reflect the pulling force size through this pressure, because the pulling force that the crab-bolt required is great, whether need great torsion just can detect the crab-bolt and can bear qualified pulling force, consequently, can dispose torsion multiplier 5 and adapter for the device as shown in fig. 2, adapter 6 is used for connecting crab-bolt and torsion multiplier 5, can easily realize big torsion through torsion multiplier 5, thereby can light realization pulling force detects. The adapter 6 one end sets up the internal thread and is used for connecting the crab-bolt, the other end sets up the plug that matches with torque multiplier 5 interface and is used for cooperating with torque multiplier 5, for convenient adapter 6 and torque multiplier 5 combine, and avoid adapter 6 to break away from torque multiplier 5, be provided with round recess 6-1 at adapter 6 axial, be provided with lockpin 12 on torque multiplier 5, after adapter 6 installs torque multiplier 5, insert the recess 6-1 through lockpin 12 and lock adapter 6, make adapter 6 only can rotate and can not follow axial displacement, thereby avoid adapter 6 to break away from torque multiplier 5. Because all be equipped with pin 5-1 on the torque multiplier 5 and cooperate the spanner to apply force, namely pin 5-1 spacing torque multiplier 5 outer lane carries out the torque output through spanner rotation torque multiplier 5 inner circle, consequently in order to facilitate the operation, still be provided with the locating part that is used for spacing pin 5-1 on casing 1, locating part 7 sets up in display part 1-2 in this embodiment and makes things convenient for the dismouting, can be through holding display part 1-2 to pin 5-1 spacing again can master whole detection device.

In general, the pressure ring at the end contacting the foundation needs to be higher than the housing, so that the pressure ring can form an anti-extrusion pressure sensor, and the housing 1 can be ensured to be angularly adjusted relative to the spherical component 4, so that the housing 1 cannot be angularly adjusted when the housing is propped against the foundation. However, some anchors are inconvenient to prop against the foundation, or in order to avoid that the foundation blocks the casing 1 from being able to adjust the angle, a sleeve 8 can be configured for the device, the sleeve 8 is sleeved on the anchor bolt A, which is equivalent to increasing the foundation height, as shown in fig. 5, one end of the sleeve 8 props against the foundation, the other end props against the compression ring 9, and when the adapter 6 is screwed, the adapter 6 and the sleeve 8 simultaneously apply pressure to the pressure sensor 2, so that the drawing force is detected.

Since the sleeve 10, the compression ring 9 and the adapter 6 are rotated relatively to the spherical assembly 4 during screwing, the inner ring bearing 13 of the spherical assembly 4 can be provided to reduce friction in order to avoid generating large friction.

Claims

1. The utility model provides a detection device is drawn to crab-bolt, includes casing (1) in be provided with pressure sensor (2) that center trompil can supply the crab-bolt to pass and can show data processing unit (3) of pressure sensor (2) numerical value, its characterized in that: the shell (1) is internally provided with a spherical component (4) which is used for fixing the pressure sensor (2) and is matched with the spherical surface of the shell (1) to adaptively adjust the included angle between the shell (1) and the axis of the hole on the pressure sensor (2) and can be used for an anchor bolt to pass through.

2. An anchor bolt pullout detection apparatus as claimed in claim 1, wherein: the torque multiplier is characterized by further comprising a torque multiplier (5) and an adapter (6) which is in threaded connection with the anchor bolt and is matched with the torque multiplier (5) to apply pressure to one side of the pressure sensor (2), wherein a limiting piece (7) for limiting a stop lever of the torque multiplier (5) is arranged on the shell (1).

3. An anchor bolt pullout detection apparatus as claimed in claim 2, wherein: the device also comprises a sleeve (8) which can be sleeved on the anchor bolt, one end of the sleeve is propped against the foundation embedded in the anchor bolt, and the other end of the sleeve is propped against the pressure sensor (2) corresponding to one side of the adapter (6) for pressing.

4. An anchor bolt pullout detection apparatus as claimed in any one of claims 1 to 3, wherein: two sides of the pressure sensor (2) are provided with compression rings (9).

5. An anchor bolt pullout detection apparatus as claimed in claim 4, wherein: a sleeve (10) is arranged in an opening of the pressure sensor (2), a flange forming a pressing ring (9) is arranged at one end of the sleeve (10), and the pressing ring (9) opposite to one end of the flange can axially move along the sleeve (10).

6. An anchor bolt pullout detection apparatus as claimed in claim 1, wherein: a limiting structure for limiting the rotation of the pressure sensor (2) along the axis of the opening of the pressure sensor is arranged in the shell (1).

7. An anchor bolt pullout detection apparatus as claimed in claim 1, wherein: at least one ball seat (11) matched with one end of the spherical assembly (4) is arranged in the shell (1).

8. An anchor bolt pulling detection device as defined in claim 1 or 7, wherein: the spherical assembly (4) comprises a pair of hemispheres (4-1), and the pressure sensor (2) is arranged between the hemispheres (4-1).

9. An anchor bolt pulling detection device as defined in claim 1 or 7, wherein: the spherical surface component (4) is a sphere with a through hole at the center for installing a pressure sensor.

10. An anchor bolt pullout detection apparatus as claimed in claim 2, wherein: a lock pin (12) capable of locking the adapter (6) to move along the axial direction is arranged on the torque multiplier (5).

11. An anchor bolt pullout detection apparatus as claimed in claim 1, wherein: the inner ring of the spherical assembly (4) is provided with a bearing (13).