Portable mechanical measuring instrument

By setting a screw adjustment mechanism of a sliding block and an adjustment plate in a mechanical measuring instrument and combining it with a drawing board, the problem that existing mechanical measuring instruments are difficult to measure and draw at the same time is solved, and the effects of multi-data measurement and convenient drawing are achieved.

CN223412636UActive Publication Date: 2025-10-03周林鑫
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Patent Information

Application Number
CN202422643862.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-31
Publication Date
2025-10-03
Estimated Expiration
2034-10-31

AI Technical Summary

Technical Problem

Existing mechanical measuring instruments have difficulty in simultaneously measuring different data of parts or items, and have difficulty in providing a convenient drawing environment after measurement.

Method used

A portable mechanical measuring instrument was designed. By setting a sliding block and an adjustment plate on the bottom of the storage box and combining it with a screw adjustment mechanism, multi-angle measurement can be achieved. A drawing board is embedded on one side of the storage box to provide the function of fixing drawings.

Benefits of technology

It realizes the simultaneous multi-data measurement of parts or objects, and can conveniently draw the measurement results in different environments, improving the convenience of measurement and drawing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The portable mechanical measuring instrument comprises a storage box, a first two-way screw is rotatably embedded in the midpoint of the inner bottom face of the storage box, clamping plates are arranged on the two sides of the outer surface of the first two-way screw in a threaded and sleeved mode, and a rotating rod is rotatably embedded in the position, close to the midpoint of the upper end, of one side of the inner bottom face of the storage box. Sliding rods are fixedly embedded in the positions, close to the front end and the rear end, of the upper end face of the inner bottom face of the storage box correspondingly, and movable blocks are slidably arranged on the outer surfaces of the two sliding rods correspondingly. According to the utility model, after the sliding block is arranged on the inner bottom surface of the storage box, the adjusting plate can be arranged between the movable frames fixed on the upper end surface of the sliding block, meanwhile, the screw rod adjusting mechanism arranged in the adjusting plate can be used for carrying out different measurements on parts to be measured, and meanwhile, a drawing board can be embedded in one side of the storage box; and the screw positioning piece arranged on the upper end face of the drawing board can be used for fixing different drawings.
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Description

Technical Field

[0001] The utility model relates to the technical field of mechanical measuring instruments, in particular to a portable mechanical measuring instrument. Background Art

[0002] Mechanical measuring instruments are tools or devices used to determine the geometric dimensions, shape, and other physical characteristics of objects. They are widely used in engineering, manufacturing, construction, and education, particularly in education, where students learn and master basic measurement principles and operational skills.

[0003] At present, most existing mechanical measuring instruments use measuring tools such as calipers and micrometers to measure parts or objects that need to be measured. Since it is difficult to simultaneously measure different data of parts or objects using measuring tools such as calipers and micrometers when measuring parts or objects, and it is difficult to provide users with a more convenient drawing environment when users need to draw the parts or objects after measuring them, those skilled in the art provide a portable mechanical measuring instrument to solve the problems raised in the above background technology. Utility Model Content

[0004] In response to the defects in the prior art, the utility model provides a portable mechanical measuring instrument. After a sliding block is set on the inner bottom surface of a storage box, an adjustment plate can be set between the movable frames fixed on the upper end surface of the sliding block. At the same time, the screw adjustment mechanism set in the adjustment plate can perform different measurements on the parts to be measured. At the same time, a drawing board can be embedded in one side of the storage box, and the screw positioning piece set on the end surface of the drawing board can fix different drawings.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A portable mechanical measuring instrument comprises a storage box, wherein a No. 1 bidirectional screw is rotatably embedded at the midpoint of the bottom surface of the storage box, and clamping plates are threadedly sleeved on both sides of the outer surface of the No. 1 bidirectional screw, a rotating rod is rotatably embedded at the midpoint of the upper end of one side of the bottom surface of the storage box, and sliding rods are fixedly embedded at the front end and the rear end of the upper end surface of the bottom surface of the storage box, and movable blocks are slidably provided on the outer surfaces of the two sliding rods, and support plates are rotatably provided on the upper end surfaces of the two movable blocks, and adjustment frames are fixedly provided on the upper end surfaces of the two support plates, and an adjustment plate is slidably provided between the two adjustment frames, and a No. 2 bidirectional screw is rotatably embedded at the midpoint of the upper end surface of the adjustment plate, and adjustment mechanisms are provided on both sides of the outer surface of the No. 2 bidirectional screw;

[0007] A storage slot is provided on one side of the storage box, and a drawing board is slidably embedded in the storage slot. Positioning members are slidably embedded on both sides of the upper surface of the drawing board. The two adjustment mechanisms each include a first measuring block, a second measuring block, a rotating block, a third measuring block, a connecting plate, a fixed plate, a movable rod, two embedded blocks and a second spring.

[0008] Preferably, the first measuring block is fixedly set at the midpoint of the upper end surface of the rotating block, the second measuring block is fixedly set at the midpoint of the rear end surface of the rotating block, the third measuring block is fixedly set at the midpoint of the lower end surface of the rotating block, the rotating block is rotatably set on one side of the connecting plate near the lower end, the movable rod is fixedly set at the midpoint of one side of the fixed plate, and the two embedded blocks are respectively fixed on one side of the fixed plate near the front end and the rear end.

[0009] Preferably, the movable rod is movably embedded at the midpoint of one side of the connecting plate, the second spring is fixedly sleeved on the outer surface of the movable rod located inside the connecting plate, one side of the two embedded blocks is respectively engaged with the front end and the rear end of the upper end of the rotating block, and the upper end of the connecting plate is threadedly sleeved on the outer surface of the No. 2 bidirectional screw.

[0010] Preferably, threaded rods are rotatably provided at the midpoints on both sides of the upper end surface of the adjustment plate, and the two threaded rods are respectively threadedly engaged with the midpoints of the upper end surfaces of the two movable frames, and second scale plates are fixedly provided on both sides of the upper end surface of the adjustment plate, and the two second scale plates are respectively engaged with one side of the midpoint of the upper end surfaces of the two movable frames.

[0011] Preferably, an embedded rod is movably embedded inside the lower end of one side of the two support plates, and a first spring is fixedly provided on the upper end surfaces of the two embedded rods. The lower ends of the two embedded rods are respectively engaged with one side of the upper end surfaces of the two movable blocks.

[0012] Preferably, a first bevel gear is fixedly provided on one side of the No. 1 bidirectional screw, and a second bevel gear is fixedly provided on the lower end surface of the rotating rod, and the first bevel gear and the second bevel gear are meshed and connected.

[0013] Preferably, the positioning member includes a positioning plate, a knob is rotatably embedded at the midpoint of the upper end surface of the positioning plate, a movable plate is rotatably provided on the lower end surface of the knob, and the movable plate is movably embedded in the lower end surface of the positioning plate.

[0014] Preferably, a first scale plate is embedded in the front end of the bottom surface of the storage box, a third scale plate is embedded in the front and rear ends of the upper end surface of the adjustment frame, and a cover plate is hingedly provided on the rear end of the upper end surface of the storage box.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. The utility model proposes a portable mechanical measuring instrument. After sliding rods are fixedly embedded in the front and rear ends of the inner bottom surface of the storage box, two movable blocks can be movably sleeved on the outer surfaces of the two sliding rods. At the same time, an adjustment plate is movably provided between the movable frames provided on the upper end surfaces of the two sliding blocks. After a No. 2 bidirectional screw is rotatably embedded at the midpoint of the upper end surface of the adjustment plate, an adjustment mechanism can be threadedly sleeved on the outer surface of the No. 2 bidirectional screw. At the same time, the user can adjust the adjustment mechanism according to different testing requirements, so as to better measure parts or objects simultaneously.

[0017] 2. The utility model proposes a portable mechanical measuring instrument. After a storage slot is opened on one side of a storage box near the lower end, a drawing board can be movably embedded in the storage slot. At the same time, positioning parts are movably embedded on both sides of the upper end surface of the drawing board. After the user places the drawing to be drawn on the end surface of the drawing board, the drawing can be fixed by moving the screw positioning part. At the same time, turning the knob in the positioning part can drive the movable board to move and adjust, so that the drawing can be better fixed. At the same time, the drawing board movably embedded in the storage slot allows the user to draw the measured parts or objects in different environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.

[0019] Figure 1 This is a closed axonometric diagram proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the expanded axonometric diagram proposed by the utility model;

[0021] Figure 3 This is an axonometric diagram of the storage box proposed in the present invention;

[0022] Figure 4 This is a cross-sectional schematic diagram of the storage box proposed in the present invention;

[0023] Figure 5 This is an axonometric diagram of the drawing board proposed by the present invention;

[0024] Figure 6 This is an axonometric diagram of the support plate and adjustment plate proposed in the present invention;

[0025] Figure 7 This is a cross-sectional schematic diagram of the support plate proposed in the present utility model;

[0026] Figure 8 This is a schematic diagram of the separation axonometric view of the adjustment structure proposed in the present utility model;

[0027] Figure 9 This is a cross-sectional schematic diagram of the adjustment structure proposed by the utility model.

[0028] In the accompanying drawings, 1-cover plate; 2-storage box; 3-drawing board; 4-adjustment mechanism; 5-adjustment plate; 6-support plate; 7-positioning member; 8-first scale plate; 9-No. 1 bidirectional screw; 10-clamping plate; 11-storage slot; 12-rotating rod; 13-first bevel gear; 14-second bevel gear; 15-threaded rod; 16-movable block; 17-No. 2 bidirectional screw; 18-second scale plate; 19-third scale plate; 20-movable frame; 21-first spring; 22-embedded rod; 23-sliding rod; 401-first measuring block; 402-second measuring block; 403-rotating block; 404-third measuring block; 405-connecting plate; 406-fixed plate; 407-movable rod; 408-embedded block; 409-second spring; 701-positioning plate; 702-movable plate; 703-knob. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which this utility model belongs.

[0031] Reference Figure 1-7 The utility model provides an embodiment of a portable mechanical measuring instrument, including a storage box 2, a bidirectional screw 9 is rotatably embedded at the midpoint of the inner bottom surface of the storage box 2, and a clamping plate 10 is threadedly sleeved on both sides of the outer surface of the bidirectional screw 9. A rotating rod 12 is rotatably embedded at the midpoint of the upper end of one side of the inner bottom surface of the storage box 2, and sliding rods 23 are fixedly embedded at the front end and the rear end of the inner bottom surface of the storage box 2. The outer surfaces of the two sliding rods 23 are both slidably provided with movable blocks 16. The upper end surfaces of the two movable blocks 16 are rotatably provided with support plates 6, and the upper end surfaces of the two support plates 6 are fixedly provided with adjustment frames. An adjustment plate 5 is slidably provided between the two adjustment frames. A No. 2 bidirectional screw 17 is rotatably embedded at the midpoint of the upper end surface of the adjustment plate 5. Adjustment mechanisms 4 are provided on both sides of the outer surface of the No. 2 bidirectional screw 17. A storage groove 11 is opened on one side of the storage box 2 near the lower end, and a drawing board 3 is slidably embedded in the storage groove 11. Positioning members 7 are slidably embedded on both sides of the upper end surface of the drawing board 3.

[0032] Specifically, after a No. 1 bidirectional screw 9 is rotated and embedded at the midpoint of the inner bottom surface of the storage box 2, the two clamping plates 10 can be driven to move in position during rotation. At the same time, after the sliding rod 23 is fixedly embedded at the front and rear ends of the inner bottom surface of the storage box 2, the movable block 16 of the sliding sleeve can be moved in position. At the same time, after the support plate 6 is rotated and set on the upper end surface of the movable block 16, the support plate 6 can be rotated and folded after use. At the same time, an adjustment plate 5 is movably provided between the upper ends of the outer surfaces of the two support plates 6. The midpoint of the upper end surface of the adjustment plate 5 A No. 2 bidirectional screw 17 is rotatably embedded in the No. 2 bidirectional screw 17. At the same time, one end of the No. 2 bidirectional screw 17 is fixedly provided with a handwheel, which can better drive the No. 2 bidirectional screw 17 to rotate. After the two adjusting mechanisms 4 are threadedly sleeved on the outer surface of the No. 2 bidirectional screw 17, the rotating No. 2 bidirectional screw 17 can better drive the adjusting mechanism 4 to move its position. After a storage groove 11 is opened on one side of the storage box 2, the drawing board 3 can be movably embedded in the storage groove 11, and the positioning piece 7 slidingly embedded on the upper end surface of the drawing board 3 can fix drawings of different sizes.

[0033] Reference Figure 8 The first measuring block 401 is fixedly set at the midpoint of the upper end surface of the rotating block 403, the second measuring block 402 is fixedly set at the midpoint of the rear end surface of the rotating block 403, and the third measuring block 404 is fixedly set at the midpoint of the lower end surface of the rotating block 403. The rotating block 403 is rotatably set on one side of the connecting plate 405 near the lower end, the movable rod 407 is fixedly set at the midpoint of one side of the fixed plate 406, and the two embedded blocks 408 are respectively fixed on one side of the fixed plate 406 near the front end and the rear end.

[0034] Specifically, after the first measuring block 401, the second measuring block 402 and the third measuring block 404 are fixedly set in the rotating block 403, the rotating block 403 can be rotated and adjusted according to different measurement requirements. When the measuring block is rotated to a position near the lower end, parts and objects can be measured according to different measurement requirements. At the same time, after the rotating block 403 is rotated and set near the lower end on one side of the connecting plate 405, the connecting plate 405 can better drive the rotating block 403 to move its position.

[0035] Reference Figure 9 The movable rod 407 is movably embedded at the midpoint of one side of the connecting plate 405, and the second spring 409 is fixedly sleeved on the outer surface of the movable rod 407 inside the connecting plate 405. One side of the two embedded blocks 408 is respectively engaged with the front end and the rear end of the upper end of the rotating block 403, and the upper end of the connecting plate 405 is threadedly sleeved on the outer surface of the No. 2 bidirectional screw 17.

[0036] Specifically, after the movable rod 407 is movably embedded in the connecting plate 405, the second spring 409 can be simultaneously on the outer surface of the movable rod 407, so that the second spring 409 can have a rebound and reset effect on the connecting plate 405. After the embedded block 408 and the rotating block 403 are engaged and connected, the embedded block 408 can play a role in positioning and fixing the rotating block 403 after rotation adjustment. At the same time, pulling the fixed plate 406 can drive the embedded block 408 and the rotating block 403 to separate, so that the rotating block 403 can be rotated and adjusted. At the same time, after the connecting plate 405 is threadedly sleeved on the outer surface of the No. 2 bidirectional screw 17, the No. 2 bidirectional screw can better drive the connecting plate 405 to move and adjust.

[0037] Reference Figure 6 , threaded rods 15 are rotatably provided at the midpoints on both sides of the upper end surface of the adjustment plate 5, and the two threaded rods 15 are respectively threadedly engaged with the midpoints of the upper end surfaces of the two movable frames 20, and second scale plates 18 are fixedly provided on both sides of the upper end surface of the adjustment plate 5, and the two second scale plates 18 are respectively engaged with one side of the midpoint of the upper end surface of the two movable frames 20.

[0038] Specifically, after the threaded rods 15 are rotatably set on both sides of the upper end surface of the adjusting plate 5, the threaded rods 15 and the midpoint of the upper end surface of the movable frame 20 can be threadedly engaged. At the same time, a handwheel is fixedly set on the upper end surface of the threaded rod 15 to better drive the threaded rod 15 to rotate. When the threaded rod 15 rotates, the adjusting plate 5 can be driven to move up and down. The second scale plate 18 on the upper end of the fixed adjusting plate 5 can display data of the lifting height.

[0039] Reference Figure 7 An embedded rod 22 is movably embedded inside the lower end of one side of the two support plates 6, and the upper end surfaces of the two embedded rods 22 are fixedly provided with a first spring 21. The lower ends of the two embedded rods 22 are respectively engaged with one side of the upper end surface of the two movable blocks 16.

[0040] Specifically, after the embedded rod 22 is movably embedded in the support plate 6, the first spring 21 can be fixedly set on the upper end surface of the embedded rod 22. At the same time, the embedded rod 22 can be engaged and connected with the movable block 16 under the action of the first spring 21, thereby playing an auxiliary fixing role for the support plate 6 after rotation and expansion.

[0041] Reference Figure 4 A first bevel gear 13 is fixedly provided on one side of the No. 1 bidirectional screw 9, and a second bevel gear 14 is fixedly provided on the lower end surface of the rotating rod 12. The first bevel gear 13 and the second bevel gear 14 are meshed and connected.

[0042] Specifically, after the first bevel gear 13 is fixed on one side of the No. 1 screw, it can be meshed with the second bevel gear 14 fixed on the lower end face of the rotating rod 12. After the first bevel gear 13 and the second bevel gear 14 are meshed, the rotating rod 12 can be better driven to rotate the No. 1 bidirectional screw 9. At the same time, a handwheel is fixed on the upper end face of the rotating rod 12 to better drive the rotating rod 12 to rotate.

[0043] Reference Figure 5 The positioning member 7 includes a positioning plate 701, a knob 703 is rotatably embedded at the midpoint of the upper end surface of the positioning plate 701, a movable plate 702 is rotatably provided on the lower end surface of the knob 703, and the movable plate 702 is movably embedded in the lower end surface of the positioning plate 701.

[0044] Specifically, after the knob 703 is rotated and embedded in the midpoint of the upper end surface of the positioning plate 701, the upper end surface of the movable plate 702 and the knob 703 can be rotatably connected near the lower end. After rotating the knob 703, the movable plate 702 can be driven to be movable and adjusted on the lower end surface of the positioning plate 701, so that drawings of different sizes can be fixed.

[0045] Reference Figure 2 、 Figure 3 and Figure 6 A first scale plate 8 is embedded in the front end of the bottom surface of the storage box 2, and a third scale plate 19 is embedded in the front and rear ends of the upper end surface of the adjustment plate 5. A cover plate 1 is hingedly provided on the rear end of the upper end surface of the storage box 2.

[0046] Specifically, after the first scale plate 8 is embedded in the upper end of the bottom surface of the storage box 2, the position of the clamping plate 10 after movement can be displayed. At the same time, the two third scale plates 19 embedded in the upper end surface of the adjustment plate 5 can display the position of the adjustment mechanism 4 after movement. At the same time, the hinged cover plate 1 can seal the storage box 2.

[0047] Working principle: When in use, after the user opens the cover 1, the folded support plate 6 can be rotated to unfold the support plate 6 and the adjustment plate 5, and the parts or items to be measured can be placed on the upper end of the inner bottom surface of the storage box 2. After rotating the rotating rod 12, the No. 1 bidirectional screw 9 can be driven to rotate, and the two clamping plates 10 can also be driven to measure the length of the parts or items. At the same time, the user can adjust the adjustment mechanism 4 according to different measurement needs, so that the parts or items can be measured according to different needs. The threaded rod 15 set on the upper end surface of the adjusting plate 5 can be moved and adjusted to the position height of the adjusting plate 5. At the same time, rotating the No. 2 bidirectional screw 17 in the adjusting plate 5 can drive the adjusting mechanism 4 to measure the parts or items. After the measurement of the parts or items is completed, the drawing board 3 can be pulled out. At the same time, the user can fix the drawing on the upper end of the drawing board 3 through the positioning member 7, so that the user can better draw the measured parts or items.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A portable mechanical measuring instrument, comprising a storage box (2), characterized in that: A first bidirectional screw (9) is rotatably embedded at the midpoint of the inner bottom surface of the storage box (2), and a clamping plate (10) is threadedly sleeved on both sides of the outer surface of the first bidirectional screw (9). A rotating rod (12) is rotatably embedded at the midpoint of the upper end of one side of the inner bottom surface of the storage box (2), and a sliding rod (23) is fixedly embedded at the front end and the rear end of the upper end surface of the inner bottom surface of the storage box (2). A movable block (16) is slidably provided on the outer surface of the two sliding rods (23), and a support plate (6) is rotatably provided on the upper end surfaces of the two movable blocks (16). An adjustment frame is fixedly provided on the upper end surfaces of the two support plates (6), and an adjustment plate (5) is slidably provided between the two adjustment frames. A second bidirectional screw (17) is rotatably embedded at the midpoint of the upper end surface of the adjustment plate (5), and an adjustment mechanism (4) is provided on both sides of the outer surface of the second bidirectional screw (17); A storage groove (11) is provided on one side of the storage box (2) near the lower end, a drawing board (3) is slidably embedded in the storage groove (11), and positioning members (7) are slidably embedded on both sides of the upper end surface of the drawing board (3). The two adjustment mechanisms (4) each include a first measuring block (401), a second measuring block (402), a rotating block (403), a third measuring block (404), a connecting plate (405), a fixed plate (406), a movable rod (407), two embedded blocks (408) and a second spring (409).

2. A portable mechanical measuring instrument according to claim 1, characterized in that: The first measuring block (401) is fixedly arranged at the midpoint of the upper end surface of the rotating block (403), the second measuring block (402) is fixedly arranged at the midpoint of the rear end surface of the rotating block (403), and the third measuring block (404) is fixedly arranged at the midpoint of the lower end surface of the rotating block (403). The rotating block (403) is rotatably arranged on one side of the connecting plate (405) near the lower end. The movable rod (407) is fixedly arranged at the midpoint of one side of the fixed plate (406). The two embedded blocks (408) are respectively fixedly arranged on one side of the fixed plate (406) near the front end and the rear end.

3. The portable mechanical measuring instrument according to claim 1, characterized in that: The movable rod (407) is movably embedded at the midpoint of one side of the connecting plate (405), and the second spring (409) is fixedly sleeved on the outer surface of the movable rod (407) located inside the connecting plate (405). One side of the two embedded blocks (408) is respectively engaged with the front end and the rear end of the upper end of the rotating block (403), and the upper end of the connecting plate (405) is threadedly sleeved on the outer surface of the No. 2 bidirectional screw (17).

4. The portable mechanical measuring instrument according to claim 1, characterized in that: Threaded rods (15) are rotatably provided at the midpoints of both sides of the upper end surface of the adjustment plate (5), and the two threaded rods (15) are respectively threadedly engaged with the midpoints of the upper end surfaces of the two movable frames (20). Second scale plates (18) are fixedly provided at both sides of the upper end surface of the adjustment plate (5), and the two second scale plates (18) are respectively engaged with one side of the midpoints of the upper end surfaces of the two movable frames (20).

5. The portable mechanical measuring instrument according to claim 1, characterized in that: An embedding rod (22) is movably embedded in the lower end of one side of the two support plates (6), and a first spring (21) is fixedly provided on the upper end surface of each of the two embedding rods (22). The lower ends of the two embedding rods (22) are respectively embedded and connected with one side of the upper end surface of the two movable blocks (16).

6. The portable mechanical measuring instrument according to claim 1, characterized in that: A first bevel gear (13) is fixedly provided on one side of the first bidirectional screw (9), and a second bevel gear (14) is fixedly provided on the lower end surface of the rotating rod (12), and the first bevel gear (13) and the second bevel gear (14) are meshed and connected.

7. The portable mechanical measuring instrument according to claim 1, characterized in that: The positioning member (7) comprises a positioning plate (701), a knob (703) is rotatably embedded at the midpoint of the upper end surface of the positioning plate (701), a movable plate (702) is rotatably provided on the lower end surface of the knob (703), and the movable plate (702) is movably embedded in the lower end surface of the positioning plate (701).

8. The portable mechanical measuring instrument according to claim 1, characterized in that: A first scale plate (8) is embedded in the inner bottom surface of the storage box (2) near the front end, a third scale plate (19) is embedded in the upper end surface of the adjustment plate (5) near the front end and the rear end, and a cover plate (1) is hingedly provided on the upper end surface of the storage box (2) near the rear end.