CN212346527U - Joint angle measuring instrument - Google Patents
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- CN212346527U CN212346527U CN202020867402.2U CN202020867402U CN212346527U CN 212346527 U CN212346527 U CN 212346527U CN 202020867402 U CN202020867402 U CN 202020867402U CN 212346527 U CN212346527 U CN 212346527U
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Abstract
A joint angle measuring instrument comprises two measuring arms, a lower measuring plate and an upper measuring plate with a dial; the upper measuring plate is movably connected with the lower measuring plate to form a structure capable of rotating relatively, a first measuring arm of the two measuring arms is connected with the upper measuring plate, and a second measuring arm of the two measuring arms is connected with the lower measuring plate. The centers of the upper measuring plate and the lower measuring plate are connected through a bolt, so that the upper measuring plate and the lower measuring plate can relatively rotate by taking the bolt as a shaft; compared with the prior art, the utility model, its effect is positive obvious, and its structure is comparatively succinct, and the processing ease, weight and volume are comparatively little, conveniently carry, do not need any electric power or other energy moreover, are applicable to any occasion to if need test a large amount of personnel (like middle and primary school student's physical examination), it is more direct to read data, and the test effect is more showing, and efficiency is higher.
Description
Technical Field
The utility model relates to a measuring instrument in the aspect of joints, which has a special measuring method in the aspects of flexibility and flexibility of various joints.
Background
The development of nationwide sports is imperative, and the quality of the flexibility of the joint is known, which depends on the anatomical structure of the joint, the volume of the soft tissues around the joint and the extensibility of ligaments, tendons, muscles and skin. The better the flexibility of a person, the larger the range of motion of the joint, and the more flexible the joint. The flexibility is closely related to health, and the improvement of the flexibility plays a positive role in enhancing the coordination ability of the body, better playing the qualities of strength, speed and the like, improving skills and technology, preventing sports injury and the like.
At present, sports is actively developed in the world or every country, talents in various aspects are cultivated, various body data of athletes need to be known as accurately as possible in the aspect of sports, physical advantages and disadvantages of the athletes are known, the advantages and the disadvantages are checked item by item, the advantages are maintained and broken through, and the weakness is supplemented and enhanced.
SUMMERY OF THE UTILITY MODEL
Utility model purpose:
the utility model provides a joint angle measuring instrument, which aims to solve the problems existing in the past.
The technical scheme is as follows:
a joint angle measuring instrument comprises two measuring arms, a lower measuring plate and an upper measuring plate with a dial;
the upper measuring plate is movably connected with the lower measuring plate to form a structure capable of rotating relatively, a first measuring arm of the two measuring arms is connected with the upper measuring plate, and a second measuring arm of the two measuring arms is connected with the lower measuring plate.
The centers of the upper measuring plate and the lower measuring plate are connected through a bolt, so that the upper measuring plate and the lower measuring plate can rotate relative to each other by taking the bolt as an axis.
The two measuring arms are provided with nylon binding bands used for temporarily fixing the two measuring arms on the limb.
Two measuring arms are telescopic rod structures.
The telescopic rod structures of the first measuring arm and the second measuring arm comprise a front rod and a rear rod;
the rear rod of the first measuring arm is connected with the upper measuring plate, and the rear rod of the second measuring arm is connected with the lower measuring plate;
the front rod comprises an upper front rod and a lower front rod, the front ends of the upper front rod and the lower front rod are movably connected through a front upright rod, the front end of the lower front rod is fixed with the front upright rod, and the front end of the upper front rod can move up and down along the axial direction of the front upright rod;
the rear ends of the upper front rod and the lower front rod extend into the rear rod, a rear vertical rod is arranged in the cavity of the rear rod, the upper end of the rear vertical rod extends into an upper slideway in the rear rod, the lower end of the rear vertical rod extends into a lower slideway in the rear rod, and the rear vertical rod is of a structure capable of moving back and forth along the upper slideway and the lower slideway; the rear end of the lower front rod is fixed with the rear vertical rod, and the rear end of the upper front rod is arranged on the rear vertical rod and can move up and down along the axial direction of the rear vertical rod;
the opening of the upper front rod penetrating through the rear rod is an upper wide opening, and the height of the upper wide opening is greater than the thickness H of the upper front rod;
the lower front rod passes through the opening of the rear rod to form a lower opening, and the height of the lower opening is matched with the thickness H of the lower front rod.
The bottom of the upper front rod is provided with a lower notch which can clamp the bottom edge B of the upper wide opening.
The front rod is also provided with a clamping device for clamping, and the clamping device comprises an upper clamping seat connected with the upper front rod, a lower clamping seat connected with the lower front rod and a side vertical rod;
the lower end of the side vertical rod is fixedly connected with the lower clamping seat, and the upper end of the side vertical rod penetrates through an upper sliding sheet and a lower sliding sheet which are fixed on the side surface of the upper clamping seat, so that the upper clamping seat can move up and down along the axial direction of the side vertical rod;
a screwing nut is arranged between the upper sliding sheet and the lower sliding sheet;
the side vertical rod is of a structure with an external thread at the lower part, and the top end of the side vertical rod is provided with an upper fixed cross rod;
the upper sliding piece is provided with a fixed sleeve, the top end of the fixed sleeve is provided with a turntable which can rotate relative to the fixed sleeve, and the turntable is provided with a hook which can hook the upper fixed cross rod when in use.
The lower part of the side vertical rod is sleeved with a tension spring, the upper end of the tension spring is fixed with the bottom of the lower slip sheet, and the lower end of the tension spring is fixed with the bottom of the side vertical rod or the lower clamping seat.
The bottom of going up the cassette all is provided with the arc cushion with the top of lower cassette, and the arc opening of two arc cushions is relative.
The hook comprises a vertical rod and a cross rod which is arranged at the top of the vertical rod and is vertical to the vertical rod.
The advantages and effects are as follows:
to the many-sided situation of present sports, the data measurement mode of sportsman's main demand and postoperative patient's recovery degree, design and utility model this product, mainly to the pliability test of measuring hip, knee, elbow, ankle joint, its purpose is to solve the problem that exists in the past. The utility model discloses mainly read data through 360 calibrated scales, stretch out two respectively with each joint rigidity of the member of joint both sides fixed and health around the calibrated scale.
In order to vary the length for each torso of the body, we set the fixed rod, i.e. the measuring arm, to be telescopic. The body part is bound by a nylon button or a clamping device.
The utility model discloses a working process: for example, to test the knee joint, the telescopic arms at the two ends are pulled to be fixed with the upper half of the thigh and the lower half of the shank, and the reading is carried out by performing the ceaseless bending of the knee to reach the limit position.
Compared with the prior art, the utility model, its effect is positive obvious, and its structure is comparatively succinct, and the processing ease, weight and volume are comparatively little, conveniently carry, do not need any electric power or other energy moreover, are applicable to any occasion to if need test a large amount of personnel (like middle and primary school student's physical examination), it is more direct to read data, and the test effect is more showing, and efficiency is higher.
And this application still provides chucking device's selection mode, and this mode can be so that fix more firm, compares in the nylon bandage, and its error is littleer.
Drawings
FIG. 1 is a front view of a schematic construction of a joint angle measuring instrument;
FIG. 2 is a schematic view of the joint angle measuring instrument;
FIG. 3 is a schematic view of one form of telescopic rod construction of the measuring arm;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a perspective view of the construction of the turntable;
FIG. 7 is a top view of the structure of the turntable;
FIG. 8 is a schematic view showing a pointer;
FIG. 9 is a use state diagram;
names of respective parts in FIG. 1
1 nylon bandage 2 measuring arm 3 flexible snap ring 4 calibrated scale 5 fixing nut 6 fixing bolt 7 measuring plate 8 lower measuring plate.
Detailed Description
A joint angle measuring instrument comprises two measuring arms, a lower measuring plate 8 and an upper measuring plate 7 with a dial 4;
the upper measuring plate 7 and the lower measuring plate 8 are movably connected to form a structure capable of rotating relatively, a first measuring arm 2-1 of the two measuring arms is connected with the upper measuring plate 7 (the side wall of the excircle of the upper measuring plate 7 is connected as shown in figure 1), and a second measuring arm 2-2 of the two measuring arms is connected with the lower measuring plate 8 (the side wall of the excircle of the lower measuring plate 8 is connected as shown in figure 1).
The first measuring arm 2-1 is provided with an indication mark (for example, as shown in fig. 8, a pointer C provided on the first measuring arm 2-1) corresponding to the scale of the scale plate 4 on the upper measuring plate 7, the second measuring arm 2-2 is also provided with an indication mark (for example, as shown in fig. 8, a pointer C provided on the second measuring arm 2-2) corresponding to the scale of the scale plate 4, the position of the indication mark on the first measuring arm 2-1 corresponding to the scale of the scale plate 4 is unchanged, and then the scale change corresponding to the two indication marks is read on the scale plate 4 by the position change of the indication mark on the second measuring arm 2-2. The length of the telescopic measuring arm is adjusted to reach a proper position, the telescopic measuring arm is fixed on a part to be measured through the nylon bandage 1, the center of the disc is superposed with the rotation center of the joint, the joint angle alpha in a normal state is read through a pointer at the measuring arm (2) connected with the dial on the upper measuring plate 7 and the lower measuring plate 8, the telescopic measuring arm moves to the limit displacement and is kept, and the joint angle beta in the limit state is read, so that the joint flexibility parameter is obtained.
The difference between the first scale and the second scale is the degree of the joint movement.
The centers of the upper measuring plate 7 and the lower measuring plate 8 are connected through the bolt 6, so that the upper measuring plate 7 and the lower measuring plate 8 can rotate relative to each other by taking the bolt 6 as an axis.
The two measuring arms are provided with nylon bandage 1 for temporarily fixing the two measuring arms on the limb.
Two measuring arms are telescopic rod structures. The measuring arm includes preceding pole and back pole, and the preceding pole stretches into and forms telescopic link structure in the back pole, and it is temporarily fixed (current structure, have and can adopt other current telescopic link structure) through flexible snap ring (3) between preceding pole and the back pole.
The telescopic rod structures of the first measuring arm 2-1 and the second measuring arm 2-2 comprise a front rod 9 and a rear rod 10;
the rear rod 10 of the first measuring arm 2-1 is connected with the upper measuring plate 7, and the rear rod 10 of the second measuring arm 2-2 is connected with the lower measuring plate 8;
the front rod 9 comprises an upper front rod 9-1 and a lower front rod 9-2, the front ends of the upper front rod 9-1 and the lower front rod 9-2 are movably connected through a front upright rod 9-3, the front end of the lower front rod 9-2 is fixed with the front upright rod 9-3, and the front end of the upper front rod 9-1 can move up and down along the axial direction of the front upright rod 9-3;
the rear ends of the upper front rod 9-1 and the lower front rod 9-2 extend into the rear rod 10, a rear vertical rod 10-1 is arranged in the cavity of the rear rod, the upper end of the rear vertical rod 10-1 extends into an upper slideway 10-2 in the rear rod 10, the lower end of the rear vertical rod 10-1 extends into a lower slideway 10-3 in the rear rod 10, and the rear vertical rod 10-1 is of a structure capable of moving back and forth along the upper slideway 10-2 and the lower slideway 10-3; the rear end of the lower front rod 9-2 is fixed with the rear vertical rod 10-1, the rear end of the upper front rod 9-1 is arranged on the rear vertical rod 10-1 and can move up and down along the axial direction of the rear vertical rod 10-1 (the upper front rod 9-1, the lower front rod 9-2, the front vertical rod 9-3 and the rear vertical rod 10-1 form a rectangular structure);
the opening of the upper front rod 9-1 penetrating through the rear rod 10 is an upper wide opening 10-5, and the height (namely the distance in the vertical direction in fig. 5) of the upper wide opening 10-5 is larger than the thickness H of the upper front rod 9-1; (satisfying the requirement that the upper front bar 9-1 can move up and down while the upper front bar 9-1 can move in the left-right direction as shown in FIG. 3)
The opening of the lower front rod 9-2 penetrating through the rear rod 10 is a lower opening 10-6, the height (namely the distance in the vertical direction in fig. 5) of the lower opening 10-6 is adapted to the thickness H of the lower front rod 9-2 (the lower front rod can be in contact fit, only the requirement that the lower front rod can be transversely stretched and contracted relative to the rear rod 10 in the left-right direction shown in fig. 3 is met, and the lower front rod 9-2 cannot move in the vertical direction is guaranteed).
The bottom of the upper front rod 9-1 is provided with a lower notch 9-1-1 which can clamp the bottom edge B of the upper wide opening 10-5.
The front rod 9 is also provided with a clamping device for clamping, and the clamping device comprises an upper clamping seat 11-1 connected with the upper front rod 9-1, a lower clamping seat 11-2 connected with the lower front rod 9-2 and a side vertical rod 12;
the lower end of the side vertical rod 12 is fixedly connected with the lower clamping seat 11-2, and the upper end of the side vertical rod 12 passes through an upper sliding sheet 11-1-1 and a lower sliding sheet 11-1-2 fixed on the side surface of the upper clamping seat 11-1, so that the upper clamping seat 11-1 can move up and down along the axial direction of the side vertical rod 12;
a screwing nut 13 is arranged between the upper sliding piece 11-1-1 and the lower sliding piece 11-1-2 (the screwing nut 13 is sleeved on the side vertical rod 12);
the side vertical rods 12 are of a structure with external threads at the lower part and smooth upper part, and the top ends of the side vertical rods 12 are provided with upper fixed cross rods 12-1;
the upper sliding vane 11-1-1 is provided with a fixed sleeve 11-1-3, the top end of the fixed sleeve 11-1-3 is provided with a turntable 11-1-5 which can rotate relative to the fixed sleeve 11-1-3, and the turntable 11-1-5 is provided with a 7-shaped hook 11-1-6 which can hook the upper fixed cross bar 12-1 when in use.
The lower part of the side vertical rod 12 is sleeved with a tension spring 15, the upper end of the tension spring 15 is fixed with the bottom of the lower sliding sheet 11-1-2, the lower end of the tension spring 15 is fixed with the bottom of the side vertical rod 12 or the lower clamping seat 11-2 (the side surface of the lower clamping seat 11-2 is provided with a side plate 11-2-1 for fixing the side vertical rod 12, and the lower end of the tension spring 15 is fixed with the side plate 11-2-1).
The bottom of the upper clamping seat 11-1 and the top of the lower clamping seat 11-2 are both provided with arc-shaped elastic pads 16, and the arc-shaped openings of the two arc-shaped elastic pads 16 are opposite (as shown in fig. 4). The curved elastic pad 16 is intended to increase flexibility in contact with the limb and prevent a feeling of jamming the arm or leg or a feeling of grinding the arm or leg.
The 7-shaped hook 11-1-6 comprises an upright rod 11-1-7 and a cross rod 11-1-8 which is arranged at the top of the upright rod 11-1-7 and is vertical to the upright rod 11-1-7, and the length direction of the cross rod 11-1-8 is vertical to the radial direction of the rotary table 11-1-5.
The present invention will be described in further detail below:
the measuring arm comprises a front rod and a rear rod, the front rod extends into the rear rod to form a telescopic rod structure, the front rod and the rear rod are temporarily fixed through a telescopic clamping ring (3), and any other existing telescopic structure can be adopted as long as the telescopic structure can stretch out and draw back.
Example 1:
during the test, we first fixed two measuring arms with nylon straps 1 to two directions of the joint (as far as possible to the near end of the limb), for example: when measuring the arm, the first measuring arm 2-1 is fixed with the forearm, the second measuring arm 2-2 is fixed with the upper arm, so that the position of the dial scale 4 corresponds to the elbow joint as much as possible, when measuring the knee, the first measuring arm 2-1 is fixed with the calf, the second measuring arm 2-2 is fixed with the thigh, so that the position of the dial scale 4 corresponds to the knee joint as much as possible, the fixed joint performs circular motion to measure the joint rotation angle, and the flexibility of each person are judged according to different rotation angles of each person.
Example 2:
the fixing mode of the mode adopts the clamping device to fix the measuring arm, and the mode has the advantages that because the clamping device is directly and rigidly connected with the measuring arm, the measuring arm almost synchronously moves with the leg or the arm when the joint moves, so that the error is small, although the mode of using the nylon bandage is slightly convenient, because the nylon bandage is a flexible structure and is in soft connection with the measuring arm, when the limb moves, the measuring arm cannot be completely and synchronously driven, the limb firstly pulls the nylon bandage, and the nylon bandage is pulled to the limit, the measuring arm is driven to move, namely, the motion of the limb and the motion of the measuring arm have a time difference, so that the angle error occurs, namely strictly speaking, when the limb starts to move, the measuring arm does not start to move, and when the limb moves by an angle, the measuring arm starts to act, which is the generation of angle difference, so that the measurement is not accurate enough, and in order to solve the problem as much as possible, the nylon binding band is only required to be tightened, so that discomfort is brought to a measurer, even blood is not smooth, and the health is not facilitated, therefore, if the requirement on error is high, the method can be realized by adopting a clamping device;
in use, as shown in fig. 4, for example: taking knee joint measurement as an example, a rotary table 11-1-5 is pulled upwards by hand, when the knee joint measurement is pulled, a transverse rod 11-1-8 is enabled to avoid an upper fixed transverse rod 12-1 by rotating the rotary table 11-1-5, at the moment, a tensioning spring 15 is stretched, a lower notch 9-1-1 is enabled to leave from a bottom edge B of an upper wide notch 10-5 (the lower notch 9-1-1 is clamped on the bottom edge B in a natural state), when the transverse rod 11-1-8 is higher than the upper fixed transverse rod 12-1, the rotary table 11-1-5 is rotated, the transverse rod 11-1-8 is enabled to be positioned above the upper fixed transverse rod 12-1, then the rotary table 11-1-5 is loosened, under the action of the tensioning spring 15, the transverse rod 11-1-8 is hung on the upper fixed transverse rod 12-1, at the moment, because the lower notch 9-1-1 is enabled to leave from the bottom, therefore, the upper front rod 9-1 and the lower front rod 9-2 can be pulled freely, then feet pass through the space between the upper clamping seat 11-1 and the lower clamping seat 11-2, then the length of the measuring arm corresponding to the thigh is adjusted, the measurement is realized by integrally moving the upper front rod 9-1 and the lower front rod 9-2 relative to the rear rod 10, when the proper position is adjusted, the lower front rod 9-2 and the rear rod 10 are held by one hand, the rotary table 11-1-5 is rotated by the other hand, the transverse rod 11-1-8 is separated from the upper fixed transverse rod 12-1, at the moment, under the action of the tensioning spring 15, the upper clamping seat 11-1 drives the upper front rod 9-1 to fall rapidly, also called to move rapidly towards the lower front rod 9-2 to clamp the thigh, at the moment, the lower notch 9-1-1 primarily clamps the bottom edge B of the upper wide notch 10-5 (the lower notch 9-1-1 is along the length The corresponding lower gap 9-1-1 clamps the bottom edge B of the upper wide opening 10-5 after the length is adjusted in multiple directions, at this time, the extending length of the upper front rod 9-1 and the lower front rod 9-2 relative to the rear rod 10 is fixed (because the bottom edge B is clamped by the lower gap 9-1-1), then, in order to be more firm, the screwing nut 13 can be rotated (at this time, the screwing nut 13 is just positioned at the top of the external thread at the lower part of the side vertical rod 12, if the distance is different, the upper clamping seat 11-1 can be slightly pressed downwards to enable the screwing nut 13 to be matched with the external thread), the upper clamping seat 11-1 is continuously pressed through the matching of the screwing nut 13 and the external thread at the lower part of the side vertical rod 12, the tightness degree can be adjusted through the screwing nut 13 according to needs (the depth of the gap is kept to be deep enough, that is, as shown in fig. 3, when the bottom edge B is clamped by the gap, there is actually a space for the gap to move up and down, because the gap does not need to be clamped to the bottom edge, and the gap only has the function of preventing the upper front rod 9-1 from moving left and right); then, the position of the shank is adjusted and the measuring arm is fixed by the same method, and by applying the method, when in measurement, the leg directly drives the measuring arm to act through the upper clamping seat 11-1 and the lower clamping seat 11-2 (the upper clamping seat 11-1 and the upper front rod 9-1, and the lower clamping seat 11-2 and the lower front rod 9-2 are all in rigid connection), so that the problem of too large angle error is avoided basically, and the actions of the measuring arm and the leg are almost synchronous;
when the leg is disassembled, the screwing nut 13 is rotated reversely, so that the screwing nut 13 leaves the external thread area, the rotating turntable 11-1-5 is lifted upwards, the cross rod 11-1-8 is hung on the upper fixed cross rod 12-1 again, at the moment, the upper clamping seat 11-1 and the lower clamping seat 11-2 are separated, and then the leg is pulled out.
In addition, this also makes the fixation more secure, not loose after several actions, as with nylon straps.
In conclusion, the designed product measures the flexibility through a simple mechanical structure. The rotating pair of the dial and the measuring arm is used for testing each joint of the human body, and the joint is presented to people in a data angle mode. Better and more intuitive, and can simply and easily understand the body flexibility of people.
The lower limb flexibility and flexibility of the athlete are mainly measured, and the flexibility of the lower limb of the athlete is particularly important in many game projects, particularly projects such as short-track speed skating, figure skating, free type air skiing skill, single-plate U-shaped grooves and the like, and the measurement is needed by the equipment like the athlete. The present application may also evaluate the degree of patient recovery after surgery.
Claims (10)
1. A joint angle measuring instrument is characterized in that: the measuring instrument comprises two measuring arms, a lower measuring plate (8) and an upper measuring plate (7) with a dial (4);
the upper measuring plate (7) is movably connected with the lower measuring plate (8) to form a structure capable of rotating relatively, a first measuring arm (2-1) of the two measuring arms is connected with the upper measuring plate (7), and a second measuring arm (2-2) of the two measuring arms is connected with the lower measuring plate (8).
2. A joint angle measuring instrument according to claim 1, wherein: the centers of the upper measuring plate (7) and the lower measuring plate (8) are connected through the bolt (6), so that the upper measuring plate (7) and the lower measuring plate (8) can relatively rotate by taking the bolt (6) as an axis.
3. A joint angle measuring instrument according to claim 1, wherein: the two measuring arms are provided with nylon binding bands (1) used for temporarily fixing the two measuring arms on the limb.
4. A joint angle measuring instrument according to any one of claims 1 to 3, wherein: two measuring arms are telescopic rod structures.
5. A joint angle measuring instrument according to claim 4, wherein: the telescopic rod structures of the first measuring arm (2-1) and the second measuring arm (2-2) comprise a front rod (9) and a rear rod (10);
the rear rod (10) of the first measuring arm (2-1) is connected with the upper measuring plate (7), and the rear rod (10) of the second measuring arm (2-2) is connected with the lower measuring plate (8);
the front rod (9) comprises an upper front rod (9-1) and a lower front rod (9-2), the front ends of the upper front rod (9-1) and the lower front rod (9-2) are movably connected through a front upright rod (9-3), the front end of the lower front rod (9-2) is fixed with the front upright rod (9-3), and the front end of the upper front rod (9-1) can move up and down along the axial direction of the front upright rod (9-3);
the rear ends of the upper front rod (9-1) and the lower front rod (9-2) extend into the rear rod (10), a rear vertical rod (10-1) is arranged in the inner cavity of the rear rod, the upper end of the rear vertical rod (10-1) extends into an upper slideway (10-2) in the rear rod (10), the lower end of the rear vertical rod (10-1) extends into a lower slideway (10-3) in the rear rod (10), and the rear vertical rod (10-1) is of a structure capable of moving back and forth along the upper slideway (10-2) and the lower slideway (10-3); the rear end of the lower front rod (9-2) is fixed with the rear vertical rod (10-1), and the rear end of the upper front rod (9-1) is arranged on the rear vertical rod (10-1) and can move up and down along the axial direction of the rear vertical rod (10-1);
the opening of the upper front rod (9-1) penetrating through the rear rod (10) is an upper wide opening (10-5), and the height of the upper wide opening (10-5) is greater than the thickness (H) of the upper front rod (9-1);
the lower front rod (9-2) is a lower opening (10-6) through the opening of the rear rod (10), and the height of the lower opening (10-6) is adapted to the thickness (H) of the lower front rod (9-2).
6. A joint angle measuring instrument according to claim 5, wherein: the bottom of the upper front rod (9-1) is provided with a lower gap (9-1-1) which can clamp the bottom edge (B) of the upper wide opening (10-5).
7. A joint angle measuring instrument according to claim 6, wherein: the front rod (9) is also provided with a clamping device for clamping, and the clamping device comprises an upper clamping seat (11-1) connected with the upper front rod (9-1), a lower clamping seat (11-2) connected with the lower front rod (9-2) and a side vertical rod (12);
the lower end of the side vertical rod (12) is fixedly connected with the lower clamping seat (11-2), and the upper end of the side vertical rod (12) penetrates through an upper sliding sheet (11-1-1) and a lower sliding sheet (11-1-2) which are fixed on the side surface of the upper clamping seat (11-1), so that the upper clamping seat (11-1) can move up and down along the axial direction of the side vertical rod (12);
a screwing nut (13) is arranged between the upper sliding vane (11-1-1) and the lower sliding vane (11-1-2);
the side vertical rod (12) is of a structure with an external thread at the lower part, and the top end of the side vertical rod (12) is provided with an upper fixed cross rod (12-1);
the upper sliding sheet (11-1-1) is provided with a fixed sleeve (11-1-3), the top end of the fixed sleeve (11-1-3) is provided with a turntable (11-1-5) which can rotate relative to the fixed sleeve (11-1-3), and the turntable (11-1-5) is provided with a hook (11-1-6) which can hook the upper fixed cross rod (12-1) when in use.
8. A joint angle measuring instrument according to claim 7, wherein: the lower part of the side vertical rod (12) is sleeved with a tension spring (15), the upper end of the tension spring (15) is fixed with the bottom of the lower sliding sheet (11-1-2), and the lower end of the tension spring (15) is fixed with the bottom of the side vertical rod (12) or the lower clamping seat (11-2).
9. A joint angle measuring instrument according to claim 8, wherein: the bottom of the upper clamping seat (11-1) and the top of the lower clamping seat (11-2) are both provided with arc-shaped elastic pads (16), and arc-shaped openings of the two arc-shaped elastic pads (16) are opposite.
10. A joint angle measuring instrument according to claim 9, wherein: the hook (11-1-6) comprises an upright rod (11-1-7) and a cross rod (11-1-8) which is arranged at the top of the upright rod (11-1-7) and is vertical to the upright rod (11-1-7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020867402.2U CN212346527U (en) | 2020-05-22 | 2020-05-22 | Joint angle measuring instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020867402.2U CN212346527U (en) | 2020-05-22 | 2020-05-22 | Joint angle measuring instrument |
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| Publication Number | Publication Date |
|---|---|
| CN212346527U true CN212346527U (en) | 2021-01-15 |
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| CN202020867402.2U Active CN212346527U (en) | 2020-05-22 | 2020-05-22 | Joint angle measuring instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375532A (en) * | 2021-06-11 | 2021-09-10 | 宁夏中欣晶圆半导体科技有限公司 | Device for measuring steel wire position of slicing machine |
-
2020
- 2020-05-22 CN CN202020867402.2U patent/CN212346527U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375532A (en) * | 2021-06-11 | 2021-09-10 | 宁夏中欣晶圆半导体科技有限公司 | Device for measuring steel wire position of slicing machine |
| CN113375532B (en) * | 2021-06-11 | 2023-02-10 | 宁夏中欣晶圆半导体科技有限公司 | Device for measuring steel wire position of slicing machine |
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