Quartz tube perpendicularity and ovality measuring instrument

Abstract

The utility model discloses an instrument for measuring perpendicularity and ovality of a quartz tube. Comprising a workbench, a vertical hollow rotating shaft, a rotation driving mechanism, a supporting disc, a sliding frame capable of being horizontally assembled on the workbench in a sliding mode, a vertical driving mechanism, a digital display dial indicator capable of moving close to the rotating shaft, a control shaft coaxially penetrating through the rotating shaft in a sliding mode, a first air cylinder with the output end in shaft connection with the lower end of the control shaft and a positioning unit. The positioning unit comprises at least three vertical positioning arms evenly distributed in the circumferential direction of the rotating shaft and a transmission mechanism connected with the multiple positioning arms and the control shaft, and when the control shaft slides upwards, the transmission mechanism drives the multiple positioning arms to move around the rotating shaft in a scattered mode. The plurality of positioning arms can be dispersed around the rotating shaft so as to abut against the inner wall of the quartz tube, so that the quartz tube and the rotating shaft are in a coaxial state, the accuracy of a detected value is improved, and the digital display dial indicator can be connected with a control terminal through a data line so as to collect and analyze data.

Description

Technical Field

[0001] The utility model relates to the technical field related to quartz tubes, and in particular to an instrument for measuring the verticality and ovality of a quartz tube. Background Art

[0002] Quartz tube is a special industrial technical glass made of silicon dioxide, which is a very good basic material. Quartz glass has a series of excellent physical and chemical properties. It is used in electric fire buckets, electric stoves, and electric heaters to generate heat. Quartz tube has the advantages of high temperature resistance, corrosion resistance, good thermal stability, good light transmittance, and good electrical insulation.

[0003] my country's utility model patent "A quartz tube verticality and ovality measuring instrument" with publication number CN215725644U discloses a quartz tube verticality and ovality measuring instrument. The quartz tube verticality and ovality measuring instrument is equipped with a base, a support rod, a positioning fixture, a movable sleeve, a connecting block, a movable plate, a positioning ring, a sliding rod, a clamp and a scale line, so that the clamp is fitted on the quartz tube and moved. By reading the scale reading of the movable plate in real time, the verticality and ovality of the quartz tube can be measured accurately and quickly.

[0004] However, the above patent still has the following shortcomings: the positioning fixture can only be fixed at the lower end of the quartz tube. When clamping the lower end of the quartz tube, it cannot ensure that the axis of the quartz tube is in a vertical state, which will affect the accuracy of numerical detection. Manually reading the value through the scale line is inefficient and the naked eye cannot accurately observe the change of the value. Therefore, it is necessary to design a quartz tube verticality and ovality measuring instrument. Utility Model Content

[0005] In view of the above technical problems, the purpose of the utility model is to overcome the problem in the prior art that when the quartz tube is clamped, the axis cannot remain in a vertical state, which affects the accuracy of the detected value, and the naked eye cannot accurately observe the change of the value.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a quartz tube verticality and ovality measuring instrument, comprising: a workbench, a vertical hollow rotating shaft axially connected to the workbench, a rotating driving mechanism mounted at the bottom of the workbench for driving the rotating shaft to rotate, a horizontal supporting plate fixedly mounted on the rotating shaft and located above the workbench, a slide mounted on the workbench in a horizontally slidable manner, a vertical driving mechanism mounted on the slide, a digital display micrometer mounted on the output end of the vertical driving mechanism and capable of moving close to the rotating shaft, a control shaft coaxially sliding through the interior of the rotating shaft, a first cylinder mounted at the bottom of the workbench and having its output end axially connected to the lower end of the control shaft, and a positioning unit mounted on the rotating shaft and located above the supporting plate;

[0007] The positioning unit includes at least three vertical positioning arms evenly distributed along the circumferential direction of the rotating shaft and a transmission mechanism connected to the plurality of positioning arms and the control shaft. When the control shaft slides upward, the plurality of positioning arms are driven by the transmission mechanism to move dispersedly around the rotating shaft.

[0008] Preferably, the transmission mechanism comprises at least two groups of transmission components arranged at intervals along the axis direction of the rotating shaft;

[0009] The transmission component includes a fixed sleeve fixedly mounted on the rotating shaft, a sliding sleeve coaxially mounted on the rotating shaft and located below the fixed sleeve, and a connecting bolt fixedly connected to the sliding sleeve and slidingly passing through the rotating shaft and fixedly connected to the control shaft. Each fixed sleeve is hinged with a plurality of first connecting rods hinged with corresponding positioning arms, and each fixed sleeve is hinged with a plurality of second connecting rods hinged with corresponding positioning arms. The hinge axis between the second connecting rod and the positioning arm is coaxially arranged with the hinge axis between the first connecting rod and the positioning arm.

[0010] Preferably, a positioning block is provided on the top of the rotating shaft, and the top of the positioning block is recessed to form a conical groove coaxially arranged with the rotating shaft. The slide is equipped with a vertical second cylinder that can move to just above the positioning block, and the output end of the second cylinder is axially connected to an insert block matching the positioning block, and the bottom of the insert block is protruding with a conical portion matching the conical groove.

[0011] Preferably, at least one bar slide is fixedly mounted on the workbench, a slider slidably connected to the bar slide is mounted on the slide, a first motor is mounted on the workbench, a first threaded rod whose length direction is parallel to the sliding length direction of the bar slide and threadedly passes through the corresponding slider is connected to the output shaft of the first motor, and both ends of the first threaded rod are mounted on the workbench through shaft seats.

[0012] Preferably, the output end of the vertical drive mechanism is fixedly equipped with an adjustment mechanism;

[0013] The adjustment mechanism includes a connecting frame connected to the digital micrometer, a mounting plate fixedly mounted on the output end of the vertical drive mechanism, at least one guide sleeve fixedly mounted on the mounting plate, at least one guide rod slidingly passing through the corresponding guide sleeve and fixedly connected to the connecting frame, a connecting block fixedly connected to the end of the guide rod away from the connecting frame, a second threaded rod threadedly passing through the connecting block parallel to the guide rod and axially connected to the mounting plate, and a handwheel fixedly mounted on the end of the second threaded rod away from the mounting plate.

[0014] Preferably, the rotary drive mechanism comprises a first gear coaxially fixedly sleeved on the lower end of the rotating shaft, a second motor assembled on the bottom of the workbench through a mounting frame, and a second gear fixedly sleeved on the output shaft of the second motor and meshing with the first gear.

[0015] Preferably, a rubber pad is mounted on a side of the positioning arm away from the rotating shaft.

[0016] According to the above technical solution, the utility model provides a quartz tube verticality ovality measuring instrument, which has the following beneficial effects when used: firstly, a plurality of positioning arms can be dispersed around the rotating shaft to conflict with the inner wall of the quartz tube, so that the quartz tube and the rotating shaft are in a coaxial state, thereby improving the accuracy of the detection value;

[0017] Secondly, the digital display micrometer can be connected to the control terminal through a data line to transmit the test data to the control terminal for collection and analysis of the data;

[0018] Thirdly, a plurality of support arms can be spread outward to clamp quartz tubes with different inner diameters, and the spacing between the digital micrometer and the rotating shaft can also be adjusted to detect quartz tubes with different outer diameters.

[0019] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a quartz tube verticality and ellipticity measuring instrument provided by the utility model;

[0022] Figure 2 This is a partial three-dimensional structure diagram of a quartz tube verticality and ovality measuring instrument provided by the utility model. Figure 1 ;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of a positioning block and an insert block of a quartz tube verticality and ovality measuring instrument provided by the utility model;

[0024] Figure 4 This is a partial three-dimensional structure diagram of a quartz tube verticality and ovality measuring instrument provided by the utility model. Figure 2 .

[0025] Description of Reference Numerals

[0026] 1. Workbench; 2. Rotating shaft; 3. Support plate; 4. Slide; 5. Vertical drive mechanism; 6. Digital micrometer; 7. Control shaft; 8. First cylinder; 9. Positioning arm; 10. Fixed sleeve; 11. Sliding sleeve; 12. First connecting rod; 13. Second connecting rod; 14. Positioning block; 15. Conical groove; 16. Second cylinder; 17. Insert block; 18. Conical part; 19. Strip slide; 20. Sliding block; 21. First motor; 22. First threaded rod; 23. Connecting frame; 24. Mounting plate; 25. Guide rod; 26. Connecting block; 27. Second threaded rod; 28. Handwheel; 29. ​​Second motor; 30. Rubber pad. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0028] In the present utility model, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0029] like Figure 1-4 As shown, a quartz tube verticality and ovality measuring instrument comprises: a workbench 1, a vertical hollow rotating shaft 2 axially connected to the workbench 1, a rotating driving mechanism mounted on the bottom of the workbench 1 for driving the rotating shaft 2 to rotate, a horizontal supporting plate 3 fixedly mounted on the rotating shaft 2 and located above the workbench 1, a slide 4 horizontally slidably mounted on the workbench 1, a vertical driving mechanism 5 mounted on the slide 4, a digital micrometer 6 mounted on the output end of the vertical driving mechanism 5 and capable of moving close to the rotating shaft 2, a control shaft 7 coaxially sliding through the interior of the rotating shaft 2, a first cylinder 8 mounted on the bottom of the workbench 1 and having its output end axially connected to the lower end of the control shaft 7, and a positioning unit mounted on the rotating shaft 2 and located above the supporting plate 3;

[0030] The positioning unit includes at least three vertical positioning arms 9 evenly distributed along the circumferential direction of the rotating shaft 2 and a transmission mechanism connected to the plurality of positioning arms 9 and connected to the control shaft 7. When the control shaft 7 slides upward, the plurality of positioning arms 9 are driven by the transmission mechanism to move dispersedly around the rotating shaft 2.

[0031] The vertical drive mechanism 5 is an existing mature technology, and the specific structure will not be described in this article. The vertical drive mechanism 5 can adopt a screw slide.

[0032] When the quartz tube needs to be inspected, the quartz tube is sleeved on the outside of the positioning unit, the support plate 3 will hold the quartz tube, and the output end of the first cylinder 8 drives the control shaft 7 to slide upward inside the rotating shaft 2. When the control shaft 7 slides upward, it will drive a number of positioning arms 9 to move around the rotating shaft 2 through the transmission mechanism. The positioning arms 9 will contact the inner wall of the quartz tube, so that the quartz tube and the rotating shaft 2 are arranged coaxially. The distance between the digital micrometer 6 and the output end of the vertical drive mechanism 5 is adjusted according to the diameter of the quartz tube. The slide 4 slides close to the rotating shaft 2 on the workbench 1, so that the detection end of the digital micrometer 6 contacts the outer wall of the quartz tube.

[0033] The rotary drive mechanism drives the rotating shaft 2 to rotate, and the rotating shaft 2 drives the quartz tube to rotate through the positioning unit, and the digital micrometer 6 can detect the ovality of the quartz tube; when the quartz tube stops rotating, the vertical drive mechanism 5 drives the digital micrometer 6 to move vertically, so as to detect the verticality of the quartz tube; the digital micrometer 6 can also move vertically while the quartz tube rotates, and the rotary drive mechanism and the vertical drive mechanism 5 can be controlled according to actual detection requirements.

[0034] When the quartz tube needs to be removed, the slide 4 moves away from the rotating shaft 2, and the first cylinder 8 drives the control shaft 7 to slide upward, so that the plurality of positioning arms 9 gather close to the rotating shaft 2 to separate from the inner wall of the quartz tube, and the quartz tube can be taken out upward.

[0035] The digital display micrometer 6 can be connected to the control terminal via a data line to transmit the detection data to the control terminal so as to collect and analyze the data.

[0036] The transmission mechanism comprises at least two groups of transmission components arranged at intervals along the axis direction of the rotating shaft 2;

[0037] The transmission component includes a fixed sleeve 10 fixedly mounted on the rotating shaft 2, a coaxial sliding sleeve 11 disposed on the rotating shaft 2 and located below the fixed sleeve 10, and a connecting bolt fixedly connected to the sliding sleeve 11 and slidingly passing through the rotating shaft 2 and fixedly connected to the control shaft 7. Each fixed sleeve 10 is hinged with a plurality of first connecting rods 12 hinged with corresponding positioning arms 9, and each fixed sleeve 10 is hinged with a plurality of second connecting rods 13 hinged with corresponding positioning arms 9. The hinge axis of the second connecting rod 13 and the positioning arm 9 is coaxially arranged with the hinge axis of the first connecting rod 12 and the positioning arm 9.

[0038] After the quartz tube sleeve is arranged on the outside of the positioning unit, the first cylinder 8 drives the control rod to slide upward, and the control rod drives the sliding sleeve 11 to slide upward through the connecting bolt, and the sliding sleeve 11 drives the second connecting rod 13 to move upward, and the hinges of the first connecting rod 12 and the second connecting rod 13 with the positioning arm 9 will move upward and move away from the rotating shaft 2, so that several positioning arms 9 are in contact with the inner wall of the quartz tube. The larger the sliding spacing of the sliding sleeve 11, the larger the moving spacing of the positioning arm 9, so the positioning unit can clamp quartz tubes of different specifications.

[0039] Because the sliding sleeve 11 is arranged below the fixed sleeve 10, the positioning arm 9 will move upward while moving away from the rotating shaft 2; if the sliding sleeve 11 is located above the fixed sleeve 10, the positioning arm 9 will move downward while moving away from the rotating shaft 2. Because the support plate 3 is arranged below, the quartz tube cannot move downward, and sliding friction will occur between the positioning arm 9 and the quartz tube, causing the problem of scratching the quartz tube.

[0040] A positioning block 14 is provided on the top of the rotating shaft 2, and a conical groove 15 is formed on the top of the positioning block 14 and is coaxially arranged with the rotating shaft 2. A vertical second cylinder 16 is mounted on the slide 4 and can be moved to the top of the positioning block 14. An insert block 17 matching the positioning block 14 is axially connected to the output end of the second cylinder 16, and a conical portion 18 matching the conical groove 15 is protruded from the bottom of the insert block 17.

[0041] The lower end of the rotating shaft 2 is assembled on the workbench 1 through a bearing. During the rotation of the rotating shaft 2, due to the assembly clearance of the bearing itself, the wear caused by use and the centrifugal force generated by the rotation, the upper end of the rotating shaft 2 will have a shaking problem, which will affect the accuracy of the detected value; therefore, a positioning block 14 and an insert block 17 are provided, and the second cylinder 16 can drive the insert block 17 to be inserted downward into the positioning block 14, and the tapered portion 18 will be inserted into the tapered groove 15, which plays a positioning role on the upper end of the rotating shaft 2 and prevents the upper end of the rotating shaft 2 from shaking during rotation.

[0042] At least one strip slide 19 is fixedly mounted on the workbench 1, a slider 20 slidably connected to the strip slide 19 is mounted on the slide 4, a first motor 21 is mounted on the workbench 1, a first threaded rod 22 whose length direction is parallel to the sliding length direction of the strip slide 19 and threadedly passes through the corresponding slider 20 is connected to the output shaft of the first motor 21, and both ends of the first threaded rod 22 are mounted on the workbench 1 through shaft seats.

[0043] The first motor 21 drives the first threaded rod 22 to rotate, so that the slider 20 can slide on the strip slide 19, thereby driving the slide 4 to slide and adjust the position.

[0044] The output end of the vertical driving mechanism 5 is fixedly equipped with an adjustment mechanism;

[0045] The adjustment mechanism includes a connecting frame 23 connected to the digital micrometer 6, a mounting plate 24 fixedly mounted on the output end of the vertical drive mechanism 5, at least one guide sleeve fixedly mounted on the mounting plate 24, at least one guide rod 25 slidingly passing through the corresponding guide sleeve and fixedly connected to the connecting frame 23, a connecting block 26 fixedly connected to the end of the guide rod 25 away from the connecting frame 23, a second threaded rod 27 threadedly passing through the connecting block 26 parallel to the guide rod 25 and axially connected to the mounting plate 24, and a handwheel 28 fixedly mounted on the end of the second threaded rod 27 away from the mounting plate 24.

[0046] When it is necessary to inspect quartz tubes of different outer diameters, it is necessary to adjust the position of the digital micrometer 6 , and rotate the hand wheel 28 to drive the second threaded rod 27 to rotate, thereby adjusting the spacing between the connecting block 26 and the mounting plate 24 .

[0047] When the distance between the connecting block 26 and the mounting plate 24 increases, the distance between the connecting frame 23 and the mounting plate 24 will decrease, and the distance between the digital micrometer 6 and the rotating shaft 2 will increase; when the distance between the connecting block 26 and the mounting plate 24 decreases, the distance between the connecting frame 23 and the mounting plate 24 will increase, and the distance between the digital micrometer 6 and the rotating shaft 2 will decrease.

[0048] The rotary drive mechanism includes a first gear coaxially fixedly sleeved on the lower end of the rotating shaft 2, a second motor 29 assembled on the bottom of the workbench 1 through a mounting frame, and a second gear fixedly sleeved on the output shaft of the second motor 29 and meshing with the first gear.

[0049] The second motor 29 is started to drive the second gear to rotate, and the second gear drives the rotating shaft 2 to rotate through the first gear.

[0050] A rubber pad 30 is mounted on the side of the positioning arm 9 away from the rotating shaft 2 .

[0051] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0052] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0053] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A quartz tube verticality and ovality measuring instrument, characterized in that: include: A workbench (1), a vertical hollow rotating shaft (2) axially connected to the workbench (1), a rotating drive mechanism mounted at the bottom of the workbench (1) for driving the rotating shaft (2) to rotate, a horizontal support plate (3) fixedly mounted on the rotating shaft (2) and located above the workbench (1), a slide (4) mounted on the workbench (1) and capable of horizontal sliding, a vertical driving mechanism (5) mounted on the slide (4), a digital micrometer (6) mounted on the output end of the vertical driving mechanism (5) and capable of moving close to the rotating shaft (2), a control shaft (7) coaxially sliding through the interior of the rotating shaft (2), a first cylinder (8) mounted at the bottom of the workbench (1) and having its output end axially connected to the lower end of the control shaft (7), and a positioning unit mounted on the rotating shaft (2) and located above the support plate (3); The positioning unit comprises at least three vertical positioning arms (9) evenly distributed along the circumferential direction of the rotating shaft (2) and a transmission mechanism connected to the plurality of positioning arms (9) and to the control shaft (7); when the control shaft (7) slides upward, the plurality of positioning arms (9) are driven by the transmission mechanism to move dispersedly around the rotating shaft (2).

2. A quartz tube verticality and ovality measuring instrument according to claim 1, characterized in that: The transmission mechanism comprises at least two groups of transmission components arranged at intervals along the axis direction of the rotating shaft (2); The transmission component comprises a fixed sleeve (10) fixedly mounted on the rotating shaft (2), a coaxial sliding sleeve (11) mounted on the rotating shaft (2) and located below the fixed sleeve (10), and a connecting bolt fixedly connected to the sliding sleeve (11) and slidingly passing through the rotating shaft (2) and fixedly connected to the control shaft (7); each fixed sleeve (10) is hinged with a plurality of first connecting rods (12) hinged with corresponding positioning arms (9); each fixed sleeve (10) is hinged with a plurality of second connecting rods (13) hinged with corresponding positioning arms (9); and the hinge axis between the second connecting rod (13) and the positioning arm (9) is coaxially arranged with the hinge axis between the first connecting rod (12) and the positioning arm (9).

3. The quartz tube verticality and ovality measuring instrument according to claim 1, characterized in that: A positioning block (14) is arranged at the top of the rotating shaft (2), and a concave groove (15) is formed on the top of the positioning block (14) and is arranged coaxially with the rotating shaft (2). A second vertical cylinder (16) is mounted on the slide (4) and can be moved to the top of the positioning block (14). An insert block (17) matching the positioning block (14) is axially connected to the output end of the second cylinder (16), and a conical portion (18) matching the concave groove (15) is protruded from the bottom of the insert block (17).

4. The quartz tube verticality and ovality measuring instrument according to claim 1, characterized in that: At least one strip slide (19) is fixedly mounted on the workbench (1); a slider (20) slidably connected to the strip slide (19) is mounted on the slide frame (4); a first motor (21) is mounted on the workbench (1); a first threaded rod (22) is connected to the output shaft of the first motor (21), the length direction of which is parallel to the sliding length direction of the strip slide (19) and which is threadedly passed through the corresponding slider (20); both ends of the first threaded rod (22) are mounted on the workbench (1) via shaft seats.

5. The quartz tube verticality and ovality measuring instrument according to claim 1, characterized in that: An adjustment mechanism is fixedly mounted on the output end of the vertical driving mechanism (5); The adjustment mechanism comprises a connecting frame (23) connected to the digital display micrometer (6), a mounting plate (24) fixedly mounted on the output end of the vertical drive mechanism (5), at least one guide sleeve fixedly mounted on the mounting plate (24), at least one guide rod (25) slidingly passing through the corresponding guide sleeve and fixedly connected to the connecting frame (23), a connecting block (26) fixedly connected to the end of the guide rod (25) away from the connecting frame (23), a second threaded rod (27) threadedly passing through the connecting block (26) parallel to the guide rod (25) and axially connected to the mounting plate (24), and a hand wheel (28) fixedly mounted on the end of the second threaded rod (27) away from the mounting plate (24).

6. The quartz tube verticality and ovality measuring instrument according to claim 1, characterized in that: The rotary drive mechanism comprises a first gear coaxially fixedly sleeved on the lower end of the rotating shaft (2), a second motor (29) assembled on the bottom of the workbench (1) via a mounting frame, and a second gear fixedly sleeved on the output shaft of the second motor (29) and meshing with the first gear.

7. The quartz tube verticality and ovality measuring instrument according to claim 1, characterized in that: A rubber pad (30) is mounted on the side of the positioning arm (9) away from the rotating shaft (2).

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