CN112378312B - Device for measuring opening of gear bracket - Google Patents
Device for measuring opening of gear bracket Download PDFInfo
- Publication number
- CN112378312B CN112378312B CN202011108523.XA CN202011108523A CN112378312B CN 112378312 B CN112378312 B CN 112378312B CN 202011108523 A CN202011108523 A CN 202011108523A CN 112378312 B CN112378312 B CN 112378312B
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- measuring
- positioning pin
- gear bracket
- abutting
- groove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
Abstract
The invention discloses a device for measuring the opening of a gear bracket, which comprises a base, a fixing pin, a positioning pin, an abutting piece and a measurer, wherein the fixing pin is used for being fixed to a first positioning hole of the gear bracket; the positioning pin is used for being inserted into a second positioning hole of the gear bracket, and defines a mounting groove together with a measuring surface in the second positioning hole, and the mounting groove is positioned in the connecting line direction of the fixing pin and the positioning pin; the abutting connection piece is arranged in the installation groove, and one side of the abutting connection piece is elastically installed on the positioning pin so that the other side of the abutting connection piece is kept in abutting connection with the measuring surface in the opening process of the gear bracket; the measurer is used for measuring the moving amount of the abutting piece in the expanding process of the gear bracket. According to the invention, the opening direction of the gear bracket, the elastic abutting direction of the abutting piece and the second positioning hole and the measuring direction are consistent, so that the measurement operation of the opening amount of the gear bracket is facilitated, and the measurement efficiency and the measurement precision are improved.
Description
Technical Field
The invention relates to the technical field of assembly and detection of parts, in particular to a device for measuring the opening of a gear bracket.
Background
The assembly process of the main speed reducer comprises the step of installing the bevel gear differential assembly into a gear bracket, wherein the opening amount of the gear bracket is 0.08-0.20mm. In the prior art, a T-shaped measuring head is generally used for measuring the opening amount of a gear bracket, the T-shaped measuring head is supported by a linear bearing, the left end of the T-shaped measuring head is in contact with a return spring, the right end of the T-shaped measuring head is in contact with a digital display percentage rod, and the lower end of the T-shaped measuring head is in contact with the wall of the bracket hole. Because the force of the contact at the lower end and the force of the return spring are not on the same straight line, a force couple is formed, the left-right movement of the T-shaped measuring head is not smooth, the measuring efficiency is influenced, the measuring precision only reaches +/-0.10, the repeated measuring precision is +/-0.05, and the requirements of an assembly process cannot be met.
Disclosure of Invention
The invention mainly aims to provide a device for measuring the opening amount of a gear bracket, and aims to solve the problems of low measurement efficiency and low measurement precision of the traditional gear bracket opening amount.
In order to achieve the above object, the present invention provides a device for measuring the opening of a gear bracket, comprising:
a base;
the fixing pin is convexly arranged on the base and is used for being fixed to the first positioning hole of the gear bracket;
the positioning pin is arranged on the base in a protruding mode at intervals, is used for being inserted into a second positioning hole of the gear bracket and defines a mounting groove together with a measuring surface in the second positioning hole, and the mounting groove is located in the connecting line direction of the fixing pin and the positioning pin;
the abutting part is arranged in the mounting groove, and one side of the abutting part is elastically mounted on the positioning pin, so that the other side of the abutting part is kept in abutting joint with the measuring surface in the opening process of the gear bracket; and the number of the first and second groups,
and a measuring device provided on the base, the measuring device being configured to measure a movement amount of the abutment member during the expansion of the gear bracket.
Optionally, the mounting groove is formed on a side of the positioning pin away from the fixing pin.
Optionally, the outer side wall of the positioning pin is provided with a limiting groove, and the abutting part is accommodated in the limiting groove so as to limit circumferential movement of the abutting part relative to the positioning pin.
Optionally, the abutting part comprises an abutting section and a measuring section, the abutting section is used for extending into the mounting groove, the measuring section extends out of the mounting groove, one side of the abutting section is elastically mounted on the positioning pin through an elastic part, and the other side of the abutting section is kept in abutting contact with the measuring surface;
the abutting part is rotatably arranged on two opposite side groove walls of the limiting groove at the position between the abutting section and the measuring section, and the measurer is used for measuring the moving amount of the measuring section.
Optionally, the positioning pin is provided with an accommodating groove at a position adjacent to the limiting groove;
one end of the elastic piece is clamped in the accommodating groove, and the other end of the elastic piece protrudes out of the accommodating groove to be connected with the positioning pin.
Optionally, the base is provided with a mounting cavity and a guide hole communicated to one side of the mounting cavity;
the positioning pin and the abutting connection piece are detachably mounted in the mounting cavity, at least part of the positioning pin and the abutting connection piece extend out of the mounting cavity, the measurer is provided with a measuring rod, and the measuring rod extends into the mounting cavity from the guide hole to abut against the abutting connection piece.
Optionally, one of the cavity wall of the installation cavity and the outer wall of the positioning pin is concavely provided with an annular groove along the circumferential direction thereof, and the other is convexly provided with an annular protrusion along the circumferential direction thereof, and the annular protrusion is installed in cooperation with the annular groove to limit the positioning pin to be separated from the installation cavity.
Optionally, the base is provided with a mounting hole communicated to the other side of the mounting cavity;
the gear bracket opening amount measuring device further comprises a locking pin, wherein the locking pin is installed in the installation hole and connected with the positioning pin so as to limit the movement of the positioning pin relative to the installation cavity.
Optionally, the measurer is a digital display dial indicator or a displacement sensor.
Optionally, the fixing pin and/or the positioning pin are movably mounted to the base, so that the fixing pin and the positioning pin are adjustably disposed in directions toward and away from each other.
In the technical scheme provided by the invention, the fixing pin is fixed relative to the first positioning hole to form a reference surface; because the positioning pin is fixed relative to the fixing pin, and the abutting part is abutted with the measuring surface of the second positioning hole, the gear bracket is installed in the differential assembly, and when the second positioning hole moves towards the direction far away from the first positioning hole (namely the gear bracket is opened), the movement amount of the abutting part can represent the movement amount of the gear bracket, and the opening direction of the gear bracket, the elastic abutting direction of the abutting part and the second positioning hole and the measuring direction are consistent, so that the measurement operation is facilitated, and the measurement efficiency and the measurement precision are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a device for measuring an opening amount of a gear rack according to the present invention;
FIG. 2 is a schematic longitudinal sectional view of the device for measuring the opening amount of the gear bracket in FIG. 1;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic view of the structure of the locating pin of FIG. 1;
FIG. 5 is a schematic view of the gear bracket opening measuring device and the gear bracket in FIG. 1;
FIG. 6 is an assembled schematic view of the gear carrier splay measuring apparatus, gear carrier and differential assembly of FIG. 1;
fig. 7 is an enlarged schematic view of the structure at B in fig. 6.
The reference numbers indicate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The assembly process of the main speed reducer comprises the step of installing the bevel gear differential assembly into a gear bracket, wherein the opening amount of the gear bracket is 0.08-0.20mm. In the prior art, a T-shaped measuring head is generally used for measuring the opening amount of a gear bracket, the T-shaped measuring head is supported by a linear bearing, the left end of the T-shaped measuring head is in contact with a return spring, the right end of the T-shaped measuring head is in contact with a digital display percentage rod, and the lower end of the T-shaped measuring head is in contact with the wall of the bracket hole. Because the force of the lower end contact is not on the same straight line with the force of the return spring, a force couple is formed, so that the left and right movement of the T-shaped measuring head is not smooth, the measuring efficiency is influenced, the measuring precision only reaches +/-0.10, the repeated measuring precision is +/-0.05, and the requirements of an assembly process cannot be met.
In view of the above, the present invention provides a device for measuring the opening amount of a gear rack, and fig. 1 to 7 show a specific embodiment of the device for measuring the opening amount of the gear rack.
Referring to fig. 5 to 7, it should be noted that the gear bracket 200 of the present invention is generally provided with a mounting slot 210, and the mounting slot 210 is used for mounting the differential assembly 300; the gear bracket 200 has a first positioning hole 220 and a second positioning hole 230 formed at opposite sides of the mounting groove 210. When the assembly groove 210 of the gear bracket 200 is assembled into the differential assembly 300, the gear bracket 200 is easily slightly deformed due to stress, that is, the gear bracket 200 is opened, so that the distance between the first positioning hole 220 and the second positioning hole 230 is increased, and therefore, the distance between the first positioning hole 220 and the second positioning hole 230 can approximately represent the opening amount of the gear bracket 200.
Specifically, a reference surface is preset on the inner hole wall of the first positioning hole 220, a measurement surface 240 is preset on the inner hole wall of the second positioning hole 230, and the opening amount of the gear bracket 200 can be determined by measuring the variation of the distance between the reference surface and the measurement surface 240 before and after the gear bracket 200 is opened.
Referring to fig. 1 to 3, the device 100 for measuring the opening of the gear bracket according to the present invention includes a base 110, a fixing pin 120, a positioning pin 130, an abutting member 140 and a measuring device 150, wherein the fixing pin 120 is protruded from the base 110 and is used for being fixed to a first positioning hole 220 of the gear bracket 200; the positioning pin 130 is disposed on the base 110 in a protruding manner at an interval from the fixing pin 120, the positioning pin 130 is used for being inserted into the second positioning hole 230 of the gear bracket 200, and defines a mounting groove 231 together with the measuring surface 240 in the second positioning hole 230, and the mounting groove 231 is located in a connecting direction of the fixing pin 120 and the positioning pin 130; the abutting piece 140 is arranged in the mounting groove 231, and one side of the abutting piece 140 is elastically mounted on the positioning pin 130, so that the other side of the abutting piece 140 is kept in abutting contact with the measuring surface 240 in the expanding process of the gear bracket 200; the measuring device 150 is provided on the base 110, and the measuring device 150 measures the amount of movement of the abutment member 140 during the expansion of the gear bracket 200.
In the technical scheme provided by the invention, the fixing pin 120 is fixed relative to the first positioning hole 220 to form a reference surface; because the positioning pin 130 is fixed relative to the fixing pin 120, and the abutting member 140 is kept abutting against the measuring surface 240 of the second positioning hole 230, when the gear bracket 200 is assembled into the differential assembly 300 and the second positioning hole 230 moves in a direction away from the first positioning hole 220 (i.e. the gear bracket 200 is opened), the moving amount of the abutting member 140 can represent the moving amount of the gear bracket 200, and the opening direction of the gear bracket 200, the elastic abutting direction of the abutting member 140 and the second positioning hole 230, and the measuring direction are consistent, which is convenient for measuring operation and is helpful for improving the measuring efficiency and the measuring accuracy.
The specific expression form of the base 110 is not limited in the present design, and may be specifically set to be a plate-shaped structure, a rod-shaped structure, a block-shaped structure or the like according to actual needs; the base 110 has a measuring end facing the plane where the first positioning hole 220 and the second positioning hole 230 are located, and the fixing pin 120 and the positioning pin 130 are both protruded on the measuring end. It is understood that the measuring end of the base 110 is further provided with a relief groove for relieving the differential assembly 300 fitted into the gear assembly groove 210 to avoid interference with the differential assembly 300.
The fixing pin 120 and the positioning pin 130 may be integrally formed on the measuring end of the base 110, or may be separately provided from the measuring end of the base 110; when the fixing pin 120 and the positioning pin 130 are separately disposed from the measuring end of the base 110, the fixing pin 120 and the positioning pin 130 can be fixed in a plurality of ways, for example, by screwing, snapping, adhering, or adsorbing, so as to ensure that the fixing pin 120 and the base 110, and the positioning pin 130 and the base 110 are fixed relatively during the measuring process.
The fixing pin 120 is fixedly installed in the first positioning hole 220 to ensure that the fixing pin 120 and the reference surface of the first positioning hole 220 are relatively fixed, specifically, the outer wall of the fixing pin 120 is kept in contact with the reference surface, or a preset distance is kept between the outer wall of the fixing pin 120 and the reference surface; for example, in an embodiment, the size and shape of the end of the fixing pin 120 protruding from the base 110 may be adapted to the shape and size of the hole of the first positioning hole 220, so that the fixing pin 120 and the first positioning hole 220 generate sufficient interference during the insertion process, and the fixing manner between the fixing pin 120 and the first positioning hole 220 is also not limited; in one embodiment, a fastening member may be disposed on one end of the fixing pin 120 protruding from the base 110 and the first positioning hole 220, and a fastening hole member may be disposed on the other end of the fixing pin 120, and the fixing pin 120 is fixed relative to the first positioning hole 220 by fastening the fastening member and the fastening hole member; of course, in an embodiment, one end of the fixing pin 120 protruding out of the base 110 and one of the first positioning holes 220 may be provided with an adsorbing element, and the other end of the fixing pin may be provided with a matching element, and the fixing pin 120 is fixed relative to the first positioning hole 220 by the mutual adsorption of the adsorbing element and the matching element, where the adsorbing element may be an adhesive, a magnet, or a suction cup.
The size of the end of the positioning pin 130 protruding out of the base 110 is smaller than the size of the hole of the second positioning hole 230, so that in the expanding process of the gear bracket 200, the positioning pin 130 is fixed relative to the base 110 and the fixing pin 120, but does not interfere with the expanding of the gear bracket 200; based on this, since the abutment 140 is held in abutment with the measuring surface 240, the opening movement of the gear bracket 200 can be converted into the movement of the abutment 140 relatively accurately.
The measurer 150 is configured to detect a moving amount of the abutting part 140, and according to actual requirements, the measurer 150 may select different products or devices, for example, when a measurer only needs to obtain a limited amount of measurement data, the measurer 150 may select a product with a digital display function, such as a digital display dial indicator, for the measurer to directly read the measurement data; when the measuring staff needs to obtain more measurement data or rely on a computer or other terminal equipment to record the measurement data, the measurer 150 may select a displacement sensor, and the measurement data of the displacement sensor is directly sent to the computer or other terminal equipment for subsequent analysis and storage.
It can be understood that the mounting groove 231 is located in a connecting line direction of the fixing pin 120 and the positioning pin 130, that is, approximately in an opening direction of the gear bracket 200; specifically, the mounting groove 231 may be formed on a side of the positioning pin 130 close to the fixing pin 120, that is, closer to the mounting groove 210 of the gear bracket 200, but in order to reduce interference of the measuring device 150 on the measuring operation of the abutting member 140 on the differential assembly 300, please refer to fig. 7, in this embodiment, the mounting groove 231 is formed on a side of the positioning pin 130 away from the fixing pin 120, which can ensure the measuring accuracy, reduce mutual interference between the measuring device 150 and the differential assembly 300, and facilitate the measuring operation.
In addition, referring to fig. 3, in an embodiment, a limiting groove 131 is disposed on an outer side wall of the positioning pin 130, and the limiting groove 131 accommodates the abutting member 140 to limit circumferential movement of the abutting member 140 relative to the positioning pin 130. The extending direction of the limiting groove 131 is consistent with the extending direction of the abutting piece 140 and extends approximately along the axial direction of the positioning pin 130; the groove width of the limiting groove 131 is matched with the width of the abutting part 140, so that the limiting groove 131 can limit the circumferential movement of the abutting part 140 relative to the positioning pin 130, but cannot interfere the movement of the abutting part 140 representing the opening process of the gear bracket 200; the depth of the limiting groove 131 may be larger than the thickness of the abutting member 140, so as to reserve enough space for the abutting member 140 to move.
Further, referring to fig. 3 and 7, in an embodiment, the abutting part 140 includes an abutting section 141 extending into the mounting groove 231 and a measuring section 142 extending out of the mounting groove 231, one side of the abutting section 141 is elastically mounted to the positioning pin 130 through an elastic member 160, and the other side is kept abutting against the measuring surface 240; the abutting member 140 is rotatably mounted on opposite side groove walls of the stopper groove 131 at a position between the abutting section 141 and the measuring section 142, and the measuring device 150 is configured to measure a movement amount of the measuring section 142.
Specifically, the abutting part 140 is rotatably mounted on two side groove walls of the limiting groove 131 through a rotating shaft 143, the opposing abutting part 140 forms a lever structure, the abutting section 141 of the abutting part 140 is in abutting contact with the measuring surface 240 of the first positioning hole 220, when the gear bracket 200 is opened, the measuring surface 240 deforms in a direction away from the first positioning hole 220, that is, the abutting section 141 rotates in a direction away from the first positioning hole 220 by a certain angle, at this time, the measuring section 142 rotates in a direction close to the first positioning hole 220 by the same angle, the measuring device 150 is in abutting contact with the same position of the measuring section 142, and thus, when the measuring section 142 rotates, the measured data can be obtained. With this arrangement, the moving amount of the abutting section 141 can be accurately transmitted to the measuring section 142, so that the measuring device 150 can obtain accurate measurement data without extending into the mounting groove 231.
Next, referring to fig. 3, in an embodiment, the positioning pin 130 is provided with a receiving groove 132 adjacent to the limiting groove 131; one end of the elastic member 160 is clamped in the receiving groove 132, and the other end protrudes out of the receiving groove 132 to be connected with the positioning pin 130. The elastic member 160 is, for example, a spring member, one end of the spring is clamped in the accommodating groove 132, and the other end of the spring is connected to the outer wall of the positioning pin 130; the accommodating groove 132 can be used for conveniently installing the elastic member 160, and limits the elastic member 160, so as to prevent the elastic member 160 from being laterally deflected or bent when being stressed, and the measuring result is not affected.
Referring to fig. 3 and 7, in an embodiment, the base 110 has a mounting cavity 111 and a guide hole 112 communicating with one side of the mounting cavity 111; the positioning pin 130 and the abutting member 140 are detachably mounted in the mounting cavity 111, and at least a part of the positioning pin and the abutting member 140 extend out of the mounting cavity 111, and the measuring device 150 has a measuring rod 151, and the measuring rod 151 extends into the mounting cavity 111 from the guiding hole 112 to abut against the abutting member 140. Compared with the scheme that the positioning pin 130 and the abutting piece 140 are directly exposed out of the base 110, partial parts of the positioning pin 130 and the abutting piece 140 are installed in the installation cavity 111, the installation cavity 111 can provide certain protection and support for the positioning pin 130 and the abutting piece 140, and the use strength of the positioning pin 130 and the abutting piece 140 is improved. The extending direction of the guide hole 112 is substantially the same as the moving direction of the measuring section 142 of the abutting member 140, so that the guide hole 112 can guide the extension and retraction of the measuring rod 151, and inaccurate measurement caused by the deviation between the extension and retraction direction of the measuring rod 151 and the moving direction of the abutting member 140 is avoided.
Referring to fig. 3, in an embodiment, one of the cavity wall of the mounting cavity 111 and the outer wall of the positioning pin 130 is recessed with an annular groove 113 along a circumferential direction thereof, and the other is raised with an annular protrusion 133 along the circumferential direction thereof, and the annular protrusion 133 is installed in cooperation with the annular groove 113 to limit the positioning pin 130 from being removed from the mounting cavity 111. Taking the example that the mounting cavity 111 is formed with the annular groove 113 and the positioning pin 130 is formed with the annular protrusion 133, the annular groove 113 is matched with the annular protrusion 133, which is helpful for limiting the positioning pin 130. Based on this, in a further embodiment, the base 110 includes two shell structures forming the mounting cavity 111, and the two shell structures can be separated from each other to allow the positioning pin 130 and the abutting member 140 to be detached and replaced; the two shell structures can be mutually assembled to form the mounting cavity 111 in a surrounding manner, so that the positioning pin 130 is limited.
Further, in an embodiment, the base 110 is provided with a mounting hole 114 communicating to the other side of the mounting cavity 111; the device 100 for measuring the opening amount of the gear bracket further comprises a locking pin 170, wherein the locking pin 170 is mounted in the mounting hole 114 and connected with the positioning pin 130, so as to limit the movement of the positioning pin 130 relative to the mounting cavity 111 and further enhance the relative fixation between the positioning pin 130 and the base 110.
Further, in an embodiment, the fixing pin 120 and/or the positioning pin 130 are movably mounted on the base 110, so that the fixing pin 120 and the positioning pin 130 are adjustably disposed in a direction approaching to and departing from each other. The movable stroke of the fixing pin 120 and/or the positioning pin 130 can be adjusted quantitatively, so as to ensure that the fixing pin 120 and the positioning pin 130 are fixed relative to the base 110 during the measurement process, and the distance between the fixing pin 120 and the positioning pin 130 can be adjusted according to gear brackets 200 of different specifications in a non-measurement state, so as to improve the applicability of the gear bracket opening amount measuring device 100. Specifically, a slide rail may be disposed on the base 110, and the slide rail extends along a connection direction of the fixing pin 120 and the positioning pin 130; the fixing pin 120 and/or the positioning pin 130 are/is slidably connected to the slide rail through an adjusting bolt, and when the fixing pin 120 and/or the positioning pin 130 slides to a required position, the fixing pin 120 and/or the positioning pin 130 is/are locked at the position by operating the adjusting bolt to be in threaded connection with the slide rail. Of course, the fixing pin 120 and/or the positioning pin 130 may also be movably disposed on the base 110 by other manners, which are not described herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (8)
1. A gear bracket opening amount measuring device is characterized by comprising:
a base;
the fixing pin is convexly arranged on the base and is used for being fixed to the first positioning hole of the gear bracket;
the positioning pin is arranged on the base in a protruding mode at intervals and used for being inserted into a second positioning hole of the gear bracket, an installation groove is defined by the positioning pin and a measuring surface in the second positioning hole, and the installation groove is located in the connecting line direction of the fixing pin and the positioning pin;
the abutting part is arranged in the mounting groove and comprises an abutting section and a measuring section, the abutting section is used for extending into the mounting groove, the measuring section extends out of the mounting groove, one side of the abutting section is elastically mounted on the positioning pin through an elastic part, the other side of the abutting section is in abutting connection with the measuring surface, and the abutting part is rotatably mounted on two opposite side groove walls of the limiting groove at the position between the abutting section and the measuring section; and the number of the first and second groups,
the measurer is arranged on the base and used for measuring the movement amount of the measuring section in the expanding process of the gear bracket;
the size of one end, protruding out of the base, of the positioning pin is smaller than the size of the hole of the second positioning hole;
the mounting groove is formed in one side, away from the fixing pin, of the positioning pin;
the outer side wall of the positioning pin is provided with a limiting groove, the limiting groove is used for accommodating the abutting part so as to limit circumferential movement of the abutting part relative to the positioning pin, the extending direction of the limiting groove is consistent with the extending direction of the abutting part and extends along the axial direction of the positioning pin, the groove width of the limiting groove is matched with the width of the abutting part, and the groove depth of the limiting groove is larger than the thickness of the abutting part so as to reserve enough space for the abutting part to move.
2. The gear bracket splay amount measuring apparatus according to claim 1, wherein the mounting groove is formed on a side of the positioning pin remote from the fixing pin.
3. The device for measuring the opening of the gear bracket according to claim 1, wherein the positioning pin is provided with a receiving groove adjacent to the limiting groove;
one end of the elastic piece is clamped in the accommodating groove, and the other end of the elastic piece protrudes out of the accommodating groove to be connected with the positioning pin.
4. The gear bracket opening amount measuring device according to claim 1, wherein the base is provided with a mounting cavity and a guide hole communicating to one side of the mounting cavity;
the positioning pin and the abutting connection piece are detachably mounted in the mounting cavity, at least part of the positioning pin and the abutting connection piece extend out of the mounting cavity, the measurer is provided with a measuring rod, and the measuring rod extends into the mounting cavity from the guide hole to abut against the abutting connection piece.
5. The device for measuring the opening of the gear bracket according to claim 4, wherein one of the wall of the mounting cavity and the outer wall of the positioning pin is provided with an annular groove along the circumferential direction thereof, and the other is provided with an annular protrusion along the circumferential direction thereof, and the annular protrusion is fitted in the annular groove to restrict the positioning pin from coming out of the mounting cavity.
6. The gear bracket openness measuring device according to claim 4, wherein the base is provided with a mounting hole communicating to the other side of the mounting cavity;
the gear bracket opening amount measuring device further comprises a locking pin, wherein the locking pin is installed in the installation hole and connected with the positioning pin so as to limit the movement of the positioning pin relative to the installation cavity.
7. The device for measuring the opening degree of the gear bracket according to claim 1, wherein the measurer is a digital display dial indicator or a displacement sensor.
8. The device for measuring the opening of a gear bracket according to any one of claims 1 to 7, wherein the fixing pin and/or the positioning pin are movably mounted to the base such that the fixing pin and the positioning pin are adjustably disposed in directions toward and away from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011108523.XA CN112378312B (en) | 2020-10-16 | 2020-10-16 | Device for measuring opening of gear bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011108523.XA CN112378312B (en) | 2020-10-16 | 2020-10-16 | Device for measuring opening of gear bracket |
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| CN112378312A CN112378312A (en) | 2021-02-19 |
| CN112378312B true CN112378312B (en) | 2022-11-15 |
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| CN202011108523.XA Active CN112378312B (en) | 2020-10-16 | 2020-10-16 | Device for measuring opening of gear bracket |
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| CN213397626U (en) * | 2021-04-06 | 2021-06-08 | 台湾积体电路制造股份有限公司 | Chain tightness measuring device |
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