Bolt elongation measuring device

Abstract

The utility model discloses a bolt elongation measuring device, comprising a fixed base plate, four corners of the fixed base plate are provided with installation holes, and the installation holes are used for installing and fixing the fixed base plate on a workbench; the hydraulic rod is fixedly mounted at the top end of the fixed bottom plate; the lifting plate is fixedly connected to the top end of the hydraulic rod; the distance measuring assemblies are arranged at the top end of the fixed bottom plate and the bottom end of the lifting plate; the anti-seismic force measuring assembly is arranged at the top end of the lifting plate; the bolt base assembly is mounted on the inner side of the fixed bottom plate; and the bolt is mounted and fixed on the inner side of the bolt base assembly. Compared with the prior art, the bolt mounting base has the advantages that the bolt mounting base can be quickly mounted and dismounted, bolt vibration can be relieved during pressure monitoring, and measurement is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring tools, and particularly relates to a bolt elongation measuring device. Background Art

[0002] Measuring the elongation of bolts is of extremely important significance in engineering and manufacturing. As a connecting component, the fastening state of bolts directly affects the safety of the entire structure. By measuring the elongation, it can be ensured that the bolts reach the predetermined pre-tightening force, thus guaranteeing the stability and load-bearing capacity of the structure. Therefore, a bolt elongation measuring device is needed to measure the elongation of bolts.

[0003] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art.

[0004] However, the patents in the prior art have the following several disadvantages:

[0005] (1) The bolt mounting base of the existing utility model bolt elongation measuring device lacks components for quick installation. Since different bolts need to be measured, the bolt mounting base needs to be replaced correspondingly. The lack of a quick installation structure for the bolt mounting base results in cumbersome installation and disassembly steps, affecting the measurement efficiency.

[0006] (2) The pressure monitoring component of the existing utility model bolt elongation measuring device lacks an anti-seismic component. During the tensile measurement of bolts, vibrations are likely to occur, and the vibrations cause inaccurate pressure measured by the pressure sensor, affecting the measurement results. Utility Model Content

[0007] The technical problem to be solved by the present utility model is to overcome the above technical defects and provide a bolt elongation measuring device with a bolt mounting base that can be quickly installed and disassembled, can reduce the vibration of bolts during pressure monitoring, and has more accurate measurement.

[0008] To solve the above problems, the technical solution of the present utility model is: a bolt elongation measuring device, comprising:

[0009] A fixed bottom plate, with mounting holes provided at the four corners of the fixed bottom plate, and the mounting holes are used to install and fix the fixed bottom plate on the workbench;

[0010] A hydraulic rod, fixedly installed at the top of the fixed bottom plate;

[0011] A lifting plate, fixedly connected to the top of the hydraulic rod;

[0012] A ranging component, which is arranged at the top of the fixed base plate and the bottom of the lifting plate;

[0013] An earthquake-resistant force measuring component, which is arranged at the top of the lifting plate. The earthquake-resistant force measuring component includes: a bearing plate, a sleeve, a pressure sensor, a limiting rod, a slider, a support rod and a first spring. An extrusion chamber is opened at the top of the lifting plate. The bearing plate is slidably connected to the inside of the extrusion chamber. A sliding hole is opened at the bottom of the extrusion chamber. The sleeve is fixedly connected to the bottom of the bearing plate. The sleeve is slidably connected to the sliding hole. The pressure sensors are fixedly connected to the four corners of the inner bottom of the extrusion chamber. The limiting rods are fixedly connected between the pressure sensors. The slider is slidably connected to the outside of the limiting rods. The support rod is rotatably connected between the bottom of the bearing plate and the top of the slider through a connecting shaft. The first spring is sleeved on the outside of the limiting rod and is fixedly connected between the pressure sensor and the slider. The first spring is equipped with a damper and has damping characteristics;

[0014] A bolt base component, which is installed inside the fixed base plate;

[0015] A bolt, which is fixedly installed inside the bolt base component.

[0016] Furthermore, the ranging component includes: a laser emitter and a laser detector. The laser emitter is fixedly installed at the top of the fixed base plate. The laser detector is fixedly installed at the bottom of the lifting plate. The laser emitter and the laser detector are connected to an external control module.

[0017] Furthermore, the bolt base component includes:

[0018] An installation base plate. An installation groove is opened inside the fixed base plate. The installation base plate is slidably installed inside the installation groove. Insertion holes are opened on both sides inside the installation groove. A threaded pipe is fixedly connected to the top of the installation base plate. The threaded pipe is threadedly connected to the bolt;

[0019] A limiting shaft. Sliding grooves are opened on both sides of the installation base plate. The limiting shaft is fixedly connected to the inside of the sliding grooves;

[0020] A positioning convex block, which is slidably connected to the inside of the sliding groove. A connection hole is opened on one side of the positioning convex block. The connection hole is slidably connected to the limiting shaft. The positioning convex block can be inserted into the insertion hole. A push button is fixedly connected to the top of the positioning convex block;

[0021] A second spring, which is sleeved on the outside of the limiting shaft and is fixedly connected to the positioning convex block and the sliding groove.

[0022] The advantages of the present utility model compared with the existing technology are as follows:

[0023] (1) The bolt mounting base of a bolt elongation measurement device of the present utility model can be quickly installed and disassembled, facilitating the replacement and adjustment corresponding to bolts and measuring bolts of different models.

[0024] (2) The pressure sensor of a bolt elongation measurement device of the present utility model is provided with an earthquake-resistant component, which can reduce the vibration of the bolt during measurement and improve the accuracy of pressure monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional view of a bolt elongation measurement device of the present utility model Figure 1 .

[0026] Figure 2 is a three-dimensional view of a bolt elongation measurement device of the present utility model Figure 2 .

[0027] Figure 3 is a sectional view of a bolt elongation measurement device of the present utility model Figure 1 .

[0028] Figure 4 is a sectional view of a bolt elongation measurement device of the present utility model Figure 2 .

[0029] Figure 5 is a sectional view of a bolt elongation measurement device of the present utility model Figure 3 .

[0030] As shown in the figure: 1. Fixed bottom plate; 2. Mounting hole; 3. Hydraulic rod; 4. Lifting plate; 5. Distance measurement component; 501. Laser emitter; 502. Laser detector; 6. Earthquake-resistant force measurement component; 601. Bearing plate; 602. Extrusion chamber; 603. Slide hole; 604. Sleeve; 605. Pressure sensor; 606. Limiting rod; 607. Slide block; 608. Support rod; 609. First spring; 7. Bolt base component; 701. Mounting bottom plate; 702. Mounting groove; 703. Threaded tube; 704. Limiting shaft; 705. Moving groove; 706. Positioning convex block; 707. Connecting hole; 708. Second spring; 709. Insertion hole; 710. Push button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are only examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0033] Embodiment 1:

[0034] As Figures 1 to 5 shown, a bolt elongation measurement device includes: a fixed base plate 1, with mounting holes 2 opened at the four corners of the fixed base plate 1, and the mounting holes 2 are used to install and fix the fixed base plate 1 on the workbench; a hydraulic rod 3, fixedly installed at the top end of the fixed base plate 1; a lifting plate 4, fixedly connected to the top end of the hydraulic rod 3; a distance measurement assembly 5, arranged at the top end of the fixed base plate 1 and the bottom end of the lifting plate 4; an earthquake-resistant force measurement assembly 6, arranged at the top end of the lifting plate 4; a bolt base assembly 7, installed inside the fixed base plate 1; and a bolt 8, installed and fixed inside the bolt base assembly 7.

[0035] The bolt base assembly 7 includes: a mounting base plate 701, a limiting shaft 704, a positioning convex block 706, and a second spring 708. An installation groove 702 is opened inside the fixed base plate 1, the mounting base plate 701 is slidably installed inside the installation groove 702, insertion holes 709 are opened on both sides inside the installation groove 702, a threaded pipe 703 is fixedly connected to the top end of the mounting base plate 701, the threaded pipe 703 is threadedly connected to the bolt 8, sliding grooves 705 are opened on both sides of the mounting base plate 701, the limiting shaft 704 is fixedly connected inside the sliding grooves 705, the positioning convex block 706 is slidably connected inside the sliding grooves 705, a connection hole 707 is opened on one side of the positioning convex block 706, the connection hole 707 is slidably connected to the limiting shaft 704, the positioning convex block 706 can be inserted into the insertion hole 709, a push button 710 is fixedly connected to the top end of the positioning convex block 706, and the second spring 708 is sleeved outside the limiting shaft 704 and fixedly connected to the positioning convex block 706 and the sliding grooves 705.

[0036] Select a suitable bolt base assembly 7 according to the measured bolt 8 model, so that the threaded pipe 703 in the bolt base assembly 7 is adapted to the measured bolt 8. Push the two push buttons 710 to make the positioning convex block 706 compress the second spring 708 and contract into the sliding grooves 705. At this time, slide the mounting base plate 701 into the installation groove 702, release the push buttons 710, and the second spring 708 pushes up the positioning convex block 706 to insert it into the insertion hole 709, completing the quick installation of the bolt base assembly 7.

[0037] The seismic force measuring component 6 includes: a bearing plate 601, a sleeve 604, a pressure sensor 605, a limiting rod 606, a slider 607, a support rod 608, and a first spring 609. An extrusion chamber 602 is formed at the top end of the lifting plate 4. The bearing plate 601 is slidably connected to the inner side of the extrusion chamber 602. A sliding hole 603 is formed at the bottom end of the extrusion chamber 602. The sleeve 604 is fixedly connected to the bottom end of the bearing plate 601. The sleeve 604 is slidably connected to the sliding hole 603. The pressure sensor 605 is fixedly connected to the four corners of the inner bottom end of the extrusion chamber 602. The limiting rod 606 is fixedly connected between the pressure sensors 605. The slider 607 is slidably connected to the outer side of the limiting rod 606. The support rod 608 is rotatably connected between the bottom end of the bearing plate 601 and the top end of the slider 607 through a connecting shaft. The first spring 609 is sleeved on the outer side of the limiting rod 606 and is fixedly connected between the pressure sensor 605 and the slider 607. The first spring 609 is equipped with a damper and has damping characteristics.

[0038] Pass the bolt 8 through the sleeve 604 and screw it into the inner side of the threaded pipe 703 to make the bolt 8 firmly tightened. The hydraulic rod 3 jacks up the lifting plate 4. The bearing plate 601 supports the bottom end of the top of the bolt 8. At this time, the bearing plate 601 slides in the extrusion chamber 602, causing the support rod 608 to rotate and driving the slider 607 to compress the first spring 609. The first spring 609 cooperates with its self - equipped damper to slow down the vibration of the bolt 8 during the elongation measurement together, making the pressure value measured by the pressure sensor 605 more accurate.

[0039] The distance measuring component 5 includes: a laser emitter 501 and a laser detector 502. The laser emitter 501 is fixedly installed at the top end of the fixed base plate 1. The laser detector 502 is fixedly installed at the bottom end of the lifting plate 4. The laser emitter 501 and the laser detector 502 are connected to an external control module.

[0040] At the same time, the laser emitter 501 is controlled by an externally connected controller and starts to emit high - frequency laser. The laser detector 502 receives the high - frequency laser. By monitoring the time when the laser detector 502 receives the laser each time through an external controller, the distance between the lifting plate 4 and the fixed base plate 1 is measured. As the hydraulic rod 3 advances, the distance between the lifting plate 4 and the fixed base plate 1 increases proportionally. When the bolt 8 can't bear the axial tension, the distance between the lifting plate 4 and the fixed base plate 1 will change greatly. By monitoring the distance change at this time, the elongation of the bolt 8 is measured.

[0041] The electrical components appearing in this text are all electrically connected to an external main controller and 220V mains electricity. And the main controller can be a conventional known device such as a computer for control. The detailed descriptions of known functions and known components are omitted in the specific implementation manners of the present disclosure. To ensure the compatibility of the device, the operating means adopted are consistent with the parameters of market instruments.

[0042] The hydraulic rod in the equipment is connected to the external hydraulic system. Since the hydraulic system belongs to the common knowledge in this field and is not an improved technical point of this case, it will not be elaborated here.

[0043] The pressure sensor, laser emitter and laser detector are all existing products on the market. Their connection methods and control methods are all prior arts, so they will not be elaborated here.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt elongation measurement device, characterized in that, Including: A fixed bottom plate (1), installation holes (2) are provided at the four corners of the fixed bottom plate (1), and the installation holes (2) are used to install and fix the fixed bottom plate (1) on the workbench; A hydraulic rod (3), the hydraulic rod (3) is fixedly installed at the top of the fixed bottom plate (1); A lifting plate (4), the lifting plate (4) is fixedly connected to the top of the hydraulic rod (3); A distance measuring component (5), the distance measuring component (5) is arranged at the top of the fixed bottom plate (1) and the bottom end of the lifting plate (4); An earthquake-resistant force measuring component (6), the earthquake-resistant force measuring component (6) is arranged at the top of the lifting plate (4), and the earthquake-resistant force measuring component (6) includes: a bearing plate (601), a sleeve (604), a pressure sensor (605), a limiting rod (606), a slider (607), a support rod (608) and a first spring (609). An extrusion chamber (602) is provided at the top of the lifting plate (4), the bearing plate (601) is slidably connected to the inner side of the extrusion chamber (602), a sliding hole (603) is provided at the bottom end of the extrusion chamber (602), the sleeve (604) is fixedly connected to the bottom end of the bearing plate (601), the sleeve (604) is slidably connected to the sliding hole (603), the pressure sensor (605) is fixedly connected to the four corners of the inner bottom end of the extrusion chamber (602), the limiting rod (606) is fixedly connected between the pressure sensors (605), the slider (607) is slidably connected to the outer side of the limiting rod (606), the support rod (608) is rotatably connected between the bottom end of the bearing plate (601) and the top end of the slider (607) through a connecting shaft, the first spring (609) is sleeved on the outer side of the limiting rod (606) and is fixedly connected between the pressure sensor (605) and the slider (607), and the first spring (609) is equipped with a damper and has damping characteristics; A bolt base assembly (7), the bolt base assembly (7) is installed inside the fixed bottom plate (1); A bolt (8), the bolt (8) is installed and fixed inside the bolt base assembly (7).

2. The bolt elongation measuring device according to claim 1, characterized in that: The distance measuring component (5) includes: a laser emitter (501) and a laser detector (502), the laser emitter (501) is fixedly installed at the top of the fixed bottom plate (1), the laser detector (502) is fixedly installed at the bottom end of the lifting plate (4), and the laser emitter (501) and the laser detector (502) are connected to an external control module.

3. The bolt elongation measurement device according to claim 1, characterized in that: The bolt base assembly (7) includes: An installation bottom plate (701), an installation groove (702) is provided inside the fixed bottom plate (1), the installation bottom plate (701) is slidably installed inside the installation groove (702), insertion holes (709) are provided on both sides inside the installation groove (702), a threaded pipe (703) is fixedly connected to the top of the installation bottom plate (701), and the threaded pipe (703) is threadedly connected to the bolt (8); A limiting shaft (704), sliding grooves (705) are provided on both sides of the installation bottom plate (701), and the limiting shaft (704) is fixedly connected to the inside of the sliding grooves (705); The positioning bump (706), the positioning bump (706) is slidably connected to the inner side of the sliding groove (705), a connecting hole (707) is opened on one side of the positioning bump (706), the connecting hole (707) is slidably connected to the limiting shaft (704), the positioning bump (706) can be inserted into the jack (709), and a push button (710) is fixedly connected to the top end of the positioning bump (706); The second spring (708), the second spring (708) is sleeved on the outer side of the limiting shaft (704) and is fixedly connected to the positioning bump (706) and the sliding groove (705).

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