Pipe and bar length measuring device

Abstract

The utility model belongs to the technical field of measurement, and relates to a pipe bar length measuring device, which comprises a bottom frame, a detection platform and a movable measuring mechanism, the upper end face of the detection platform is provided with an opening groove used for containing a to-be-measured pipe bar in the length direction, the detection platform is further provided with a positioning block capable of moving in the length direction of the detection platform, and the lower end of the positioning block is matched with the opening groove. The positioning block has a locking function and is used for preventing the to-be-measured pipe bar from moving along the length direction of the detection platform; during measurement, through the movement of the positioning block and the measuring mechanism, one end of a to-be-measured pipe bar abuts against the positioning block, and the other end of the to-be-measured pipe bar makes contact with a measuring rod of a dial indicator in the measuring mechanism. The measuring device is simple in structure, the position of the measuring head can be fixed without complex operation by moving the measuring mechanism and the positioning block, and length measurement of pipes and bars of different specifications can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the measurement technical field relates to the measurement of pipe bar length especially relates to a pipe bar length measuring device. BACKGROUND

[0002] In the pipe bar production and processing process, accurately measure the length of pipe bar is the important link of ensuring product quality and process precision. The traditional measurement is mostly through the tape measure pipe bar length, not only low efficiency, and error is bigger, it is difficult to meet the modern industry to the high demand of accuracy and efficiency. Although some manufacturers have launched some pipe bar automatic length measuring equipment, but these devices often complex structure, cumbersome operation and high cost.

[0003] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0004] The utility model discloses a pipe bar length measuring device to match the measurement requirement of different specifications pipe bar length.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The pipe bar length measuring device comprises a base frame, a detection platform and a movable measuring mechanism which are oppositely installed at both ends of the base frame.

[0007] The upper end face of the detection platform is provided with an open slot along the length direction for placing the pipe bar to be measured, and a positioning block capable of moving along the length direction of the detection platform is further installed on the detection platform, and the lower end of the positioning block is matched with the open slot.

[0008] During measurement, one end of the pipe bar to be measured is abutted against the positioning block, and the other end is contacted with the measuring rod of the micrometer in the measuring mechanism through the movement of the positioning block and the measuring mechanism.

[0009] Specifically, the detection platform is fixedly installed on the base frame through fasteners, and the fasteners can be fastening screws or other fasteners capable of achieving fastening effect.

[0010] Specifically, first adjusting assemblies are further symmetrically arranged on both sides of the detection platform to adjust the moving range of the detection platform along the width direction thereof.

[0011] Further, the first adjusting assembly comprises a first mounting plate arranged vertically and a first adjusting nut, a plate surface of the first mounting plate is arranged in parallel with a side surface of the detection platform; the first adjusting nut is mounted on an upper portion of the first mounting plate, a lower portion of the first mounting plate is fixedly mounted on the chassis, and the moving range of the detection platform along the width direction thereof is adjusted by rotating the first adjusting nut, so that the central axis of the detection platform coincides with the central axis of the upper surface of the chassis.

[0012] Specifically, the opening slot is a V-shaped slot, and the positioning block is a V-shaped positioning block.

[0013] Further, the V-shaped positioning block comprises a stop block body, the stop block body is movable along the length direction of the V-shaped slot, and a lower end of the stop block body is provided with a V-shaped protrusion matched with the V-shaped slot; a second adjusting nut is mounted on the side wall of the stop block body, and the relative fixation of the V-shaped positioning block on the V-shaped slot is realized by rotating the second adjusting nut.

[0014] Specifically, a supporting soft pad for protection is arranged on the supporting surface of the inner wall of the V-shaped slot, so as to protect the to-be-measured pipe rod from being damaged during the measurement.

[0015] Specifically, the measurement mechanism comprises a micrometer, a first driving assembly for driving the micrometer to move in a first direction, and a second moving assembly for moving the micrometer in a second direction, the first direction is parallel to the length direction of the detection platform, and the second direction is perpendicular to the first direction.

[0016] The first driving assembly comprises two straight linear guides arranged along the length direction of the detection platform, a screw rod and a screw nut block connected with the screw rod are distributed between the two straight linear guides, and the screw rod is parallel to the straight linear guides; one end of the screw rod is connected with a driving device, and the other end of the screw rod is rotationally fixed on a bearing seat.

[0017] Specifically, the second moving assembly comprises a second mounting plate for mounting the micrometer, and the second mounting plate is fixedly connected to the top of the screw nut block.

[0018] The top of the screw nut block is fixedly provided with a plurality of fastening bolts, and an oval assembly hole matched with the fastening bolts is formed in the mounting plate, and the second mounting plate and the top of the screw nut block are fixedly connected by cooperating with the fastening bolts. The number of the oval assembly holes is multiple, preferably four, the second mounting plate drives the micrometer to move transversely (i.e. the second direction is perpendicular to the first direction, and the first direction is parallel to the length direction of the detection platform), so that the measuring rod of the micrometer can contact the end portion of the pipe rod of different specifications, and the length measurement requirement of the pipe rod of different specifications is met.

[0019] Specifically, the positioning block and the measuring mechanism both have self-locking function, which can prevent the pipe bar from moving axially and ensure the accuracy of data.

[0020] Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

[0021] 1) The measuring device, when measuring the length, first needs to place the pipe bar to be measured on the open slot, and make one end of the pipe bar to be measured abut against the positioning block, then move the measuring platform to drive the measuring rod of the micrometer to contact the end of the pipe bar, so as to measure the length of the pipe bar.

[0022] 2) The measuring mechanism moves along the length direction of the detection platform through the first driving assembly, and based on the screw nut transmission principle, the screw nut slider installed on the screw rod is pushed to move axially along the screw rod due to the friction force, so as to drive the second mounting plate and the micrometer to move in the first direction (a direction parallel to the length direction of the detection platform), which is simple to operate and can realize the movement of the measuring mechanism without complex operation.

[0023] 3) When the specification of the pipe bar to be measured is large, the second moving assembly can be used to move the micrometer in the transverse direction (the second direction, which is perpendicular to the first direction, and the first direction is parallel to the length direction of the detection platform) under the driving of the second mounting plate, so as to ensure that the measuring rod of the micrometer can contact the end of the pipe bar of different specifications, so as to meet the length measurement requirement of the pipe bar of different specifications. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings incorporated into the specification and forming a part thereof, together with the specification, serve to explain the principles of the utility model.

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 The front view of the pipe bar length measuring device provided by the embodiment 1 of the utility model;

[0027] Figure 2 The side view of the pipe bar length measuring device provided by the embodiment 1 of the utility model;

[0028] Figure 3 The front view of the detection platform provided by the embodiment 1 of the utility model;

[0029] Figure 4for Figure 3 Side view;

[0030] Figure 5 This is a top view of the tube / rod length measuring device provided in Embodiment 1 of this utility model;

[0031] Figure 6 This is a partial enlarged view of the measuring mechanism in Embodiment 1 of this utility model;

[0032] Figure 7 This is a front view of the tube / rod length measuring device provided in Embodiment 2 of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Base frame; 1-1. Support legs; 1-2. Frame body;

[0035] 2. Testing platform;

[0036] 3. Opening groove;

[0037] 4. Positioning block; 4-1. Stop block body; 4-2. V-shaped protrusion; 4-3. Second adjusting nut;

[0038] 5. Measuring mechanism; 5-1. Dial indicator; 5-2. First drive assembly; 5-2-1. Linear guide rail; 5-2-2. Vertical connecting plate; 5-2-3. Lead screw; 5-2-4. Lead screw nut slider; 5-2-5. Drive device; 5-3. Second moving assembly; 5-3-1. Second mounting plate; 5-3-2. Elliptical assembly hole;

[0039] 6. First adjusting component; 6-1. First mounting plate; 6-2. First adjusting nut;

[0040] 7. Support block;

[0041] 8. Lock the handle. Detailed Implementation

[0042] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples consistent with some aspects of this invention as detailed in the appended claims.

[0043] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] Example 1

[0045] See Figures 1-5 The embodiment provides a pipe rod length measuring device, which comprises a chassis 1, a detection platform 2 and a movable measuring mechanism 3 which are oppositely arranged at two ends of the chassis 1.

[0046] An opening groove 3 for placing a pipe rod to be measured is arranged on the upper end surface of the detection platform 2 along the length direction, and a positioning block 4 which can move along the length direction is further arranged on the detection platform 2, and the lower end of the positioning block 4 is matched with the opening groove 3; the positioning block 4 has a locking function for preventing the pipe rod to be measured from moving along the length direction of the detection platform 2.

[0047] During measurement, one end of the pipe rod to be measured is pressed against the positioning block 4 and the other end is contacted with the measuring rod of the micrometer 5-1 in the measuring mechanism 5 by moving the positioning block 4 and the measuring mechanism 5.

[0048] In the embodiment, the chassis 1 comprises a support leg 1-1 at the bottom and a frame 1-2 arranged above the support leg 1-1, the frame 1-2 is formed by welding a steel I-beam and fixing plates arranged at two ends of the steel I-beam, and the frame 1-2 is welded and fixed above the support leg 1-1 or is fixed above the support leg 1-1 by bolts and nuts; wherein the bottom of the support leg 1-1 is provided with a roller with a locking function, and the measuring device can be moved to a specified position and locked according to actual requirements, and then the pipe rod to be measured is measured.

[0049] Further, the detection platform 2 is fixedly arranged on the frame 1-2 (cross section in the shape of a steel I-beam) by fasteners; preferably, the fasteners can be fastening screws, or other fasteners capable of achieving fastening effect such as bolts and nuts.

[0050] In the embodiment, the opening groove is a V-shaped groove, the included angle of the V-shaped groove is 60°-90°, and preferably 90°, and the positioning block 4 is a V-shaped positioning block.

[0051] Further, the V-shaped positioning block comprises a stopper body 4-1, the stopper body 4-1 can move along the length direction of the V-shaped groove, and the lower end of the stopper body 4-1 is provided with a V-shaped protrusion 4-2 matched with the V-shaped groove; a second adjusting nut 4-3 is arranged on the side wall of the stopper body 4-1, and the relative fixing of the V-shaped positioning block on the V-shaped groove is realized by rotating the second adjusting nut 4-3.

[0052] It is to be further explained that, in order to protect the to-be-measured pipe rod from being damaged during the measurement, a supporting soft pad for protection is arranged on the supporting surface of the inner wall of the V-shaped groove. In the embodiment, the length of the V-shaped groove is about 4600mm, the material of the V-shaped groove is carbon tool steel, the flatness of the V-shaped groove is 0.02mm / m, the straightness of the V-shaped groove is 0.03mm / m, and the surface roughness of the V-shaped groove is 0.32μm.

[0053] Further, as shown in Figure 6 The measurement mechanism 5 comprises a micrometer 5-1, a first driving assembly 5-2 for driving the micrometer 5-1 to move in a first direction, and a second moving assembly 5-3 for driving the micrometer 5-1 to move in a second direction, the first direction being parallel to the length direction of the detection platform 2, and the second direction being perpendicular to the first direction.

[0054] The first driving assembly 5-2 comprises two straight linear guides 5-2-1 arranged along the length direction of the detection platform 2, a screw rod 5-2-3 and a screw rod nut sliding block 5-2-4 arranged between the two straight linear guides 5-2-1, the screw rod 5-2-3 being parallel to the straight linear guides 5-2-1, one end of the screw rod 5-2-3 being connected to the output shaft of a motor (driving device 5-2-5) through a coupling, and the other end of the screw rod 5-2-3 being rotationally fixed on a fixed plate (a bearing seat is fixedly installed on the fixed plate, and the bearing seat is rotationally connected to the other end of the screw rod 5-2-3). That is, when the motor rotates, power is transmitted to the screw rod 5-2-3 through the coupling, and when the screw rod 5-2-3 rotates, based on the screw rod nut transmission principle, the screw rod nut sliding block 5-2-4 installed on the screw rod 5-2-3 is pushed to move axially along the screw rod 5-2-3 due to the friction force, thereby driving the second mounting plate 5-3-1 and the micrometer 5-1 to move in the first direction (a direction parallel to the length direction of the detection platform 2, i.e., an axial direction).

[0055] Further, the second moving assembly 5-3 comprises a second mounting plate 5-3-1 for mounting the micrometer 5-1, the second mounting plate 5-3-1 being fixedly connected to the top of the screw rod nut sliding block 5-2-4.

[0056] The top of the screw rod nut sliding block 5-2-4 is fixed with four fastening bolts, four oval assembly holes 5-3-2 are formed in the second mounting plate 5-3-1 and matched with the fastening bolts, and the second mounting plate 5-3-1 is fixedly connected to the top of the screw rod nut sliding block 5-2-4 by cooperating with four fastening nuts.

[0057] When the size of the pipe or bar to be measured is large, after ensuring that the dial gauge 5-1 moves to the designated position along the axial direction, the fastening nut is loosened, the second mounting plate 5-3-1 is moved, the oval assembly hole 5-3-2 moves relative to the fastening bolt along the second direction (a direction perpendicular to the first direction, i.e. the transverse direction), until the measuring head of the dial gauge 5-1 contacts the end of the pipe or bar to be measured, so as to realize the measurement of the length of the pipe or bar to be measured.

[0058] In this embodiment, the dial gauge 5-1 is a digital dial gauge, which is convenient to read and has a display measurement accuracy of 0.001 mm.

[0059] In summary, the specific measurement process of the pipe or bar length measuring device is as follows:

[0060] First, a length standard sample after measurement is placed on the open slot 3, the position of the positioning block 4 is adjusted so that the other end of the length standard sample is within the extension range (0-10 mm) of the measuring rod of the dial gauge 5-1; the positioning block 4 and the measuring mechanism 5 are fixed, which can be realized by locking the handle 8; the transverse position of the dial gauge 5-1 is adjusted so that the measuring rod thereof contacts the end of the length standard sample, the "0" button of the dial gauge is clicked, and the length standard sample is removed.

[0061] Then, the pipe or bar to be measured is placed on the open slot 3, one end of the pipe or bar to be measured abuts against the positioning block 4, the measuring rod of the dial gauge 5-1 is pulled to make it contact the end of the pipe or bar, and the display value of the dial gauge 5-1 is read; the length value of the pipe or bar to be measured is equal to the algebraic sum of the display value of the dial gauge 5-1 and the length standard sample.

[0062] Embodiment 2

[0063] On the basis of embodiment 1, the difference between embodiment 1 and embodiment 2 is that:

[0064] In order to ensure that the detection platform 2 is located at the central axis of the upper surface of the I-beam, a first adjusting assembly 6 is symmetrically arranged on both sides of the detection platform 2, which is used to adjust the moving range of the detection platform 2 along the width direction thereof, see Figure 7 .

[0065] Preferably, the first adjusting assembly 6 comprises a first mounting plate 6-1 arranged vertically and a first adjusting nut 6-2; the plate surface of the first mounting plate 6-1 is arranged in parallel with the vertical plate of the I-beam; the first adjusting nut 6-2 is installed on the upper part of the first mounting plate 6-1; the lower part of the first mounting plate 6-1 is fixedly installed on the fixed block (not shown in the figure) of the I-beam; the moving range of the detection platform 2 along the width direction thereof is adjusted by rotating the first adjusting nut 6-2, so that the central axis of the detection platform 2 coincides with the central axis of the upper surface of the frame 1-2 (I-beam).

[0066] Further, the first driving assembly 5-2 comprises:

[0067] Two straight rails 5-2-1 arranged along the length direction of the detection platform 2, the two ends of the two straight rails 5-2-1 are connected and fixed through a vertical connecting plate 5-2-2; a lead screw 5-2-3 is distributed between the straight rails 5-2-1, the lead screw 5-2-3 is parallel to the straight rails 5-2-1; one end of the lead screw 5-2-3 extends out of the vertical connecting plate 5-2-2, and a controller, an encoder and a hand wheel are sequentially mounted from the outside to the inside, the lead screw 5-2-3 is driven to rotate through rotating the hand wheel, and then a lead screw nut sliding block 5-2-4 mounted on the lead screw 5-2-3 is driven to move along the axial direction of the lead screw 5-2-3, so as to drive the second mounting plate 5-3-1 and the micrometer 5-1 to move in the first direction (a direction parallel to the length direction of the detection platform 2, that is, the axial direction), when moving to a specified position, that is, the measuring rod of the micrometer 5-1 is in contact with the end of the pipe bar to be measured, locking can be realized through the locking handle 8 to avoid the movement of the pipe bar to be measured in the axial direction.

[0068] It should be noted that when the hand wheel is rotated, the encoder can collect the number of rotations of the hand wheel in real time, so as to facilitate the resetting of the measuring structure after the measurement is completed. Moreover, the shape of the opening groove 3 in the embodiment is not specifically limited, for example, it can be a ladder-shaped groove, a concave arc groove or other shapes of opening grooves 3, in principle, as long as it can provide stable support for the pipe bar to be measured, which will not be described here. Similarly, the shape of the positioning block 4 is not specifically limited, it can be adaptively adjusted according to the shape of the opening groove 3, and the fixation of the end of the pipe bar to be measured is realized through the mutual complementation of the shape of the opening groove 3.

[0069] In addition, when the pipe bar to be measured is long, a supporting block 7 can also be arranged between the measuring mechanism 5 and the detection platform 2, the supporting block 7 is also provided with an opening groove 3 for supporting the pipe bar to be measured.

[0070] The above only describes specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application.

[0071] It should be understood that the present application is not limited to the above described and that various modifications and changes can be made without departing from the scope thereof. The scope of the present application is only limited by the appended claims.

Claims

1. A device for measuring the length of pipes and rods, characterized in that, The utility model relates to a kind of pipe rod measuring device, including: Chassis (1), detection platform (2) and movable measuring mechanism (5) are oppositely mounted at both ends of the chassis (1); The upper end surface of the detection platform (2) is provided with an opening slot (3) for placing the pipe rod to be measured along the length direction, and a positioning block (4) capable of moving along the length direction is further mounted on the detection platform (2), and the lower end of the positioning block (4) is matched with the opening slot (3);The positioning block (4) has locking function to prevent the pipe rod to be measured from moving along the length direction of the detection platform (2); During measurement, one end of the pipe rod to be measured is pressed against the positioning block (4) by the movement of the positioning block (4) and the measuring mechanism (5), and the other end is in contact with the measuring rod of the micrometer (5-1) in the measuring mechanism (5).

2. The pipe rod length measuring device according to claim 1, characterized by The detection platform (2) is fixedly installed on the chassis (1) by fasteners.

3. The pipe rod length measuring device according to claim 2, characterized in that First adjusting assembly (6) is further symmetrically arranged on both sides of the detection platform (2) to adjust the movement amplitude of the detection platform (2) along the width direction.

4. The pipe rod length measuring device according to claim 3, characterized in that The first adjusting assembly (6) comprises a first mounting plate (6-1) arranged vertically and a first adjusting nut (6-2), the plate surface of the first mounting plate (6-1) is arranged in parallel with the side surface of the detection platform (2), the first adjusting nut (6-2) is installed on the upper part of the first mounting plate (6-1), the lower part of the first mounting plate (6-1) is fixedly installed on the chassis (1), and the movement amplitude of the detection platform (2) along the width direction is adjusted by rotating the first adjusting nut (6-2).

5. The pipe rod length measuring device according to claim 1, characterized by The opening slot is a V-shaped slot, and the positioning block (4) is a V-shaped positioning block.

6. The pipe rod length measuring device according to claim 5, wherein The V-shaped positioning block comprises a stop block body (4-1), the stop block body (4-1) can move along the length direction of the V-shaped slot, and the lower end of the stop block body (4-1) has a V-shaped protrusion (4-2) matched with the V-shaped slot, and a second adjusting nut (4-3) is installed on the side wall of the stop block body (4-1), and the relative fixation of the V-shaped positioning block on the V-shaped slot is realized by rotating the second adjusting nut (4-3).

7. The pipe rod length measuring device according to claim 6, characterized in that A support soft pad for protection is arranged on the support surface of the inner wall of the V-shaped slot.

8. The pipe rod length measuring device according to claim 1, characterized by The measuring mechanism (5) comprises a micrometer (5-1), a first driving assembly (5-2) for driving the micrometer (5-1) to move along a first direction, and a second moving assembly (5-3) for moving the micrometer (5-1) along a second direction, the first direction is parallel to the length direction of the detection platform (2), and the second direction is perpendicular to the first direction. The first driving assembly (5-2) comprises two straight guide rails (5-2-1) arranged along the length direction of the detection platform (2), a screw rod (5-2-3) and a screw rod nut sliding block (5-2-4) connected with the screw rod (5-2-3) are distributed between the two straight guide rails (5-2-1), and the screw rod (5-2-3) is parallel to the straight guide rails (5-2-1); one end of the screw rod (5-2-3) is connected with a driving device (5-2-5), and the other end of the screw rod (5-2-3) is rotationally fixed on a bearing seat.

9. The pipe rod length measuring device according to claim 8, characterized in that The second moving assembly (5-3) comprises a second mounting plate (5-3-1) for mounting a micrometer (5-1), and the second mounting plate (5-3-1) is fixedly connected to the top of the screw rod nut sliding block (5-2-4). The top of the screw rod nut sliding block (5-2-4) is fixed with a plurality of fastening bolts, and the second mounting plate (5-3-1) is provided with an oval assembly hole (5-3-2) matched with the fastening bolts, and the second mounting plate (5-3-1) is fixedly connected to the top of the screw rod nut sliding block (5-2-4) by cooperating with the fastening bolts.

10. The pipe rod length measuring device according to any one of claims 1 to 9, characterized by The measuring mechanism (5) further comprises a locking handle (8) having a locking function.

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