CN209850758U - Self-locking clamping device for clamping test piece - Google Patents
Self-locking clamping device for clamping test piece Download PDFInfo
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- CN209850758U CN209850758U CN201920645421.8U CN201920645421U CN209850758U CN 209850758 U CN209850758 U CN 209850758U CN 201920645421 U CN201920645421 U CN 201920645421U CN 209850758 U CN209850758 U CN 209850758U
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- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
The utility model relates to a from locking-type clamping device for centre gripping test piece, include: the device comprises a shell, a bevel gear disc support body, a bevel gear disc bearing, a small bevel gear shaft, a small bevel gear bearing, a baffle cover, a flange disc type connector, a cylindrical outer gear ring bearing, a gear shaft installation body, a cylindrical ring type connector, a small cylindrical gear I, a gear shaft, a small cylindrical gear II, a gear shaft bearing, a rack type clamping jaw, a guide base I, a guide base II and a self-locking device; through self-lock device's diversion pawl and ratchet mutually support, accomplish clamping device's auto-lock makes it have the function of auto-lock, through a series of drive mechanism, makes rack formula jack catch can accomplish the tight work of clamp of test piece inner wall, can accomplish the tight work of clamp of test piece outer wall again, has simple structure, compactness, and the manufacturability is good, advantages such as convenient operation.
Description
Technical Field
The utility model relates to a clamping device, specific saying so relates to a from locking-type clamping device for centre gripping test piece.
Background
Various clamping devices are used in human life and work, and the application range of the clamping devices is wider and wider. The clamping device is a device for fixing a processing object to occupy a correct position for receiving construction or detection in a mechanical manufacturing process, and is also called a fixture. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in a process may be referred to as a clamping device. The clamping device is an indispensable technological device in machining, and can play the following roles: the requirements of various processing precision can be stably and reliably met; the processing working hours are shortened, and the labor productivity is improved; the production cost is reduced; the labor intensity of an operator is reduced; can be processed by operators with lower technical grades; the technological range of the machine tool can be enlarged. Various clamping devices exist on the market, for example: welding jigs, inspection jigs, assembly jigs, machine tool jigs, and the like, but most clamping devices have various problems, such as: for a cylindrical ring type test piece, only the outer wall of the test piece can be clamped, but the inner wall of the test piece cannot be clamped; the clamping device has the advantages of complex structure, poor reliability, low precision, poor adaptability and the like. For solving a great deal of drawback of clamping device on the market, the utility model designs a this money is easy and simple to handle, elegant appearance, and the precision is high is used for the self-locking type clamping device of centre gripping test piece.
Disclosure of Invention
The utility model discloses a simple structure, compactness are sought to the purpose and manufacturing, and the manufacturability is good, convenient operation, and the precision is high, safe practical one kind be used for the centre gripping test piece from locking-type clamping device.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a self-locking clamping device for clamping a test piece, comprising: the device comprises a shell, a bevel gear disc support body, a bevel gear disc bearing, a small bevel gear shaft, a small bevel gear bearing, a baffle cover, a flange disc type connector, a cylindrical outer gear ring bearing, a gear shaft installation body, a cylindrical ring type connector, a small cylindrical gear I, a gear shaft, a small cylindrical gear II, a gear shaft bearing, a rack type clamping jaw, a guide base I, a guide base II and a self-locking device; the bevel gear disc support body is connected with the bevel gear disc through the bevel gear disc bearing, the bevel gear disc is meshed with the small bevel gear, the small bevel gear is fixedly connected with the small bevel gear shaft through a spline, and the small bevel gear shaft is connected with the shell through the small bevel gear bearing; the conical fluted disc support body is fixedly connected with the blocking cover through a screw, the blocking cover is fixedly connected with the gear shaft installation body through a screw, the gear shaft installation body is fixedly connected with the cylindrical ring type connecting body through a screw, and the cylindrical ring type connecting body is fixedly connected with the shell through a screw; the conical fluted disc and the flange disc type connecting body are fixedly connected with each other through screws, the flange disc type connecting body and the cylindrical outer gear ring are fixedly connected with each other through screws, and the cylindrical outer gear ring and the gear shaft mounting body are connected with each other through a cylindrical outer gear ring bearing; the cylindrical outer gear ring is meshed with the small cylindrical gear I, the small cylindrical gear I and the gear shaft are fixedly connected with each other through splines, the gear shaft and the small cylindrical gear II are fixedly connected with each other through splines, and the gear shaft installation body are connected with each other through the gear shaft bearing; the small cylindrical gear II is meshed with the rack type clamping jaw, the rack type clamping jaw is respectively in clearance fit sliding connection with the guide base I and the guide base II, and the guide base I and the guide base II are respectively and fixedly connected with the gear shaft installation body in a welding mode; the self-locking device is positioned between the shell and the bevel pinion, a ratchet wheel of the self-locking device is arranged on the bevel pinion shaft through a spline, a base of the self-locking device is fixedly connected with the shell and the bevel gear disc supporting body through screws, and a direction-changing pawl of the self-locking device is in clearance fit sliding connection with the bevel gear disc supporting body; the axes of the shell, the bevel gear disc support body, the bevel gear disc bearing, the baffle cover, the flange disc type connector, the cylindrical outer gear ring bearing, the gear shaft mounting body and the cylindrical ring type connector are on the same straight line; the small bevel gear, the small bevel gear shaft, the small bevel gear bearing, the small cylindrical gear I, the gear shaft, the small cylindrical gear II, the gear shaft bearing, the rack type clamping jaw, the guide base I, the guide base II and the self-locking device are respectively provided with three sets which surround the same straight line and are distributed in an equal distribution mode.
Further, the shell is of a hollow cylindrical structure, one end face of the cylinder is removed, the other end face of the cylinder is provided with a circular through hole I, three threaded holes equally divided around the axis are formed in the periphery of the circular through hole I, and one end of the shell, provided with the threaded holes, is connected with one end of the cylindrical ring type connecting body through a screw; the side surface of the cylinder is provided with three circular through holes II, the axes of the three circular through holes II are on the same plane I, the plane I is parallel to the two end surfaces, and the plane I is positioned on one side of the central symmetry plane of the two end surfaces and is close to the removed end surface; the side surface of the cylinder is provided with three circular through holes III, the axes of the three circular through holes III are on the same plane II, and the plane II and the plane I are symmetrical about the central symmetry plane of the two end surfaces.
Further, the conical fluted disc support body is positioned inside one end of the shell, and one end of the shell is the end with the end face removed; the bevel gear disc support body is of a flange disc type structure, an annular disc I and a hollow cylinder I with two removed end faces are connected with each other through welding, three circular through holes IV are formed in the edge of the annular disc I in a split mode, a direction-changing pawl of the self-locking device is connected with the circular through holes IV in a sliding mode through clearance fit, a stepped circular groove is formed in one end of the hollow cylinder I in the inner portion, and one end, provided with the stepped circular groove, of the cylindrical disc I is far away from one end of the annular disc I.
Further, the self-locking device includes: the device comprises a base, a turning pawl, a spring and a ratchet wheel; the base is of a hollow cuboid structure, one end face of the base is removed, the other end face of the base is provided with a circular through hole V, one side face of the base is fixedly installed on the inner side face of the shell through screws, and the end face of the base is fixedly installed on the outer edge of the circular ring plate I of the conical fluted disc support body through screws; the direction-changing pawl is positioned in the base and fixedly installed together through an adjusting knob, a long and thin cylinder, a disc and wedge-shaped blocks of ratchet teeth sequentially through threads, the long and thin cylinder of the direction-changing pawl is sequentially and respectively in clearance fit sliding connection with the circular through hole IV of the bevel gear disc supporting body and the circular through hole V of the base of the self-locking device, the spring is sleeved outside the long and thin cylinder of the direction-changing pawl, and the wedge-shaped blocks of the direction-changing pawl and the ratchet wheel are installed in a matched mode; one end of the spring is fixedly connected with one end of the base, provided with the circular through hole V, and the other end of the spring is fixedly connected with one end of the disc of the direction-changing pawl; the ratchet wheel is arranged at one end of the small bevel gear shaft through a spline and is close to one end of the small bevel gear.
Furthermore, the flange-disk type connector is of a flange-disk type structure, the circular disk II and the hollow cylinder II are connected with each other through welding, one end face of the cylinder II is removed, the other end face of the cylinder II is provided with a round hole, and the end face provided with the round hole is far away from one end face of the circular disk II.
Further, the gear shaft mounting body is of a flange-like disc structure and is formed by sequentially connecting a circular disc III, an internal hollow cylinder III with two removed end faces and an internal hollow cylinder IV with two removed end faces through welding.
Further, a side face of the rack type clamping jaw is provided with teeth, two side faces adjacent to the side face are provided with dovetail grooves, the teeth of the rack type clamping jaw are meshed with the teeth of the small cylindrical gear II, the dovetail grooves are respectively connected with dovetail protrusions of the guide base I and dovetail protrusions of the guide base II in a clearance fit sliding mode, and two end faces of the rack type clamping jaw are of arc-shaped structures.
Furthermore, an inner hexagonal hole is formed in one end of the bevel pinion shaft, and one end of the bevel pinion shaft is used for installing the bevel pinion bearing.
Implement the utility model relates to a from locking-type clamping device for centre gripping test piece, its beneficial effect lies in:
(1) the utility model relates to a self-locking clamping device for clamping a test piece, when clamping the inner wall of the test piece, an inner hexagonal wrench is used for clockwise rotating a small bevel gear shaft, the small bevel gear shaft rotates, and then the small bevel gear is driven to rotate; the rotation of the small bevel gear drives the bevel gear disc to rotate, so that the flange disc type connecting body is driven to rotate; the rotation of the flange disc type connecting body drives the cylindrical outer gear ring to rotate, so that the small cylindrical gear I is driven to rotate; the rotation of the small cylindrical gear I drives the gear shaft to rotate, and further drives the small cylindrical gear II to rotate; the rotation of the small cylindrical gear II drives the rack type clamping jaw to do linear motion, so that the arc-shaped tail end of the rack type clamping jaw is far away from the central axis and moves towards the inner wall of the test piece, and the clamping work of the test piece is completed along with the increase of the distance of the arc-shaped tail end of the rack type clamping jaw; when the outer wall of a test piece is clamped, the small bevel gear shaft is rotated anticlockwise by an inner hexagonal wrench, after transmission of the transmission mechanism, the small cylindrical gear II rotates to drive the rack type clamping jaw to make linear motion, so that the arc-shaped tail end of the rack type clamping jaw is close to the central axis and moves towards the outer wall of the test piece, and the clamping work of the test piece is completed along with the increase of the approach of the arc-shaped tail end of the rack type clamping jaw; the device has the advantages of simple and compact structure, good manufacturability, convenient operation and the like.
(2) When the inner wall of a test piece is clamped, the adjusting knob of the turning pawl is lifted by a hand along the axial direction of the long and thin cylinder of the turning pawl and is rotated, so that the wedge type ratchet is matched with the ratchet wheel, the bevel pinion shaft can only rotate clockwise, namely the rack type clamping jaw can only move towards the direction far away from the central axis, and the self-locking of the clamping device is completed; when the outer wall of a test piece is clamped, after the self-locking device is operated, the wedge-shaped block type ratchet teeth are matched with the ratchet wheel, so that the bevel pinion shaft can only rotate anticlockwise, namely the rack type clamping jaw can only move towards the direction close to the central axis, the self-locking of the clamping device is completed, and the clamping device has the self-locking function.
Drawings
Fig. 1 is an external view of a self-locking clamping device for clamping a test piece according to the present invention;
FIG. 2 is a structural diagram of the shelling of the self-locking clamping device for clamping a test piece according to the present invention;
fig. 3 is an exploded view of a shelling structure of a self-locking clamping device for clamping a test piece according to the present invention;
fig. 4 is a schematic diagram of the clamping operation of the self-locking clamping device for clamping a test piece according to the present invention;
fig. 5 is a structural diagram of a self-locking device of the self-locking clamping device for clamping a test piece of the present invention;
fig. 6 is a two-dimensional view of a gear shaft mounting body of a self-locking clamping device for clamping a test piece according to the present invention;
in the figure: the device comprises a shell-1, a bevel gear disc support body-2, a bevel gear disc-3, a bevel gear disc bearing-4, a bevel pinion-5, a bevel pinion shaft-6, a bevel pinion bearing-7, a baffle cover-8, a flange disc type connector-9, a cylindrical outer gear ring-10, a cylindrical outer gear ring bearing-11, a gear shaft installation body-12, a cylindrical ring type connector-13, a small cylindrical gear I-14, a gear shaft-15, a small cylindrical gear II-16, a gear shaft bearing-17, a rack type claw-18, a guide base I-19, a guide base II-20, a self-locking device-21, a base-211, a direction-changing type pawl-212, a spring-213 and a ratchet-214.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5, 6, a self-locking clamping device for clamping a test piece, comprising: the device comprises a shell 1, a bevel gear disc support body 2, a bevel gear disc 3, a bevel gear disc bearing 4, a bevel pinion 5, a bevel pinion shaft 6, a bevel pinion bearing 7, a baffle cover 8, a flange disc type connector 9, a cylindrical outer gear ring 10, a cylindrical outer gear ring bearing 11, a gear shaft mounting body 12, a cylindrical ring type connector 13, a small cylindrical gear I14, a gear shaft 15, a small cylindrical gear II16, a gear shaft bearing 17, a rack type clamping jaw 18, a guide base I19, a guide base II20 and a self-locking device 21; the bevel-toothed disc support body 2 is connected with the bevel-toothed disc 3 through the bevel-toothed disc bearing 4, the bevel-toothed disc 3 is meshed with the small bevel gear 5, the small bevel gear 5 is fixedly connected with the small bevel gear shaft 6 through a spline, and the small bevel gear shaft 6 is connected with the shell 1 through the small bevel gear bearing 7; the bevel gear disc support body 2 is fixedly connected with the blocking cover 8 through screws, the blocking cover 8 is fixedly connected with the gear shaft installation body 12 through screws, the gear shaft installation body 12 is fixedly connected with the cylindrical ring type connecting body 13 through screws, and the cylindrical ring type connecting body 13 is fixedly connected with the shell 1 through screws; the bevel gear disc 3 and the flange disc type connecting body 9 are fixedly connected with each other through screws, the flange disc type connecting body 9 and the cylindrical outer gear ring 10 are fixedly connected with each other through screws, and the cylindrical outer gear ring 10 and the gear shaft mounting body 12 are connected with each other through a cylindrical outer gear ring bearing 11; the cylindrical outer gear ring 10 is meshed with the small cylindrical gear I14, the small cylindrical gear I14 and the gear shaft 15 are fixedly connected with each other through splines, the gear shaft 15 and the small cylindrical gear II16 are fixedly connected with each other through splines, and the gear shaft 15 and the gear shaft mounting body 12 are connected with each other through the gear shaft bearing 17; the small cylindrical gear II16 is meshed with the rack type claw 18, the rack type claw 18 is respectively in clearance fit sliding connection with the guide base I19 and the guide base II20, and the guide base I19 and the guide base II20 are respectively and fixedly connected with the gear shaft installation body 12 in a welding mode; the self-locking device 21 is positioned between the shell 1 and the bevel pinion 5, a ratchet wheel 214 of the self-locking device 21 is mounted on the bevel pinion shaft 6 through a spline, a base 211 of the self-locking device 21 is fixedly connected with the shell 1 and the bevel gear disc support body 2 through screws, and a direction-changing pawl 212 of the self-locking device 21 is in clearance fit sliding connection with the bevel gear disc support body 2; the axes of the housing 1, the bevel-gear-disc support body 2, the bevel gear disc 3, the bevel-gear-disc bearing 4, the blocking cover 8, the flange-disc-type connector 9, the cylindrical outer gear ring 10, the cylindrical outer gear-ring bearing 11, the gear-shaft mounting body 12 and the cylindrical-ring-type connector 13 are on the same straight line; the bevel pinion 5, the bevel pinion shaft 6, the bevel pinion bearing 7, the cylindrical pinion I14, the pinion shaft 15, the cylindrical pinion II16, the pinion shaft bearing 17, the rack-type dog 18, the guide base I19, the guide base II20, and the self-locking device 21 are three sets each, and they are equally distributed around the same straight line.
Further, the housing 1 is a cylindrical structure with a hollow interior, one end face of the cylinder is removed, the other end face is provided with a circular through hole I, three threaded holes equally divided around the axis are formed around the circular through hole I, and one end of the housing 1 provided with the threaded holes is connected with one end of the cylindrical ring type connecting body 13 through screws; the side surface of the cylinder is provided with three circular through holes II, the axes of the three circular through holes II are on the same plane I, the plane I is parallel to the two end surfaces, and the plane I is positioned on one side of the central symmetry plane of the two end surfaces and is close to the removed end surface; three circular through holes III are respectively formed in the side face of the cylinder, the axes of the three circular through holes III are on the same plane II, and the plane II and the plane I are symmetrical about the central symmetry plane of the two end faces; the bevel gear disc support body 2 is positioned inside one end of the shell 1, and one end of the shell 1 is the end with the end face removed; the bevel gear disc support body 2 is of a flange disc type structure, an annular disc I and an inner hollow cylinder I with two removed end faces are connected with each other through welding, three circular through holes IV are formed in the edge of the annular disc I, a direction-changing pawl 212 of the self-locking device 21 is in clearance fit sliding connection with the circular through holes IV, a stepped circular groove is formed in one end of the inner hollow cylinder I, and one end with the stepped circular groove is far away from one end of the annular disc I.
Further, the self-locking device 21 includes: base 211, direction-changing pawl 212, spring 213 and ratchet wheel 214; the base 211 is a hollow cuboid structure, one end face of the base is removed, the other end face of the base is provided with a circular through hole V, one side face of the base is fixedly installed on the inner side face of the shell 1 through screws, and the end face of the base 211 is fixedly installed on the outer edge of the circular ring disc I of the bevel gear disc support body 2 through screws; the direction-changing pawl 212 is positioned in the base 211 and is fixedly installed together through an adjusting knob, a long and thin cylinder, a disc and wedge-shaped ratchet teeth sequentially through threads, the long and thin cylinder of the direction-changing pawl 212 is in clearance fit sliding connection with the circular through hole IV of the bevel disk support body 2 and the circular through hole V of the base 211 of the self-locking device 21 respectively in sequence, the spring 213 is sleeved outside the long and thin cylinder of the direction-changing pawl 212, and the wedge-shaped ratchet teeth of the direction-changing pawl 212 and the ratchet wheel 214 are installed in a matched mode; one end of the spring 213 is fixedly connected with one end of the base 211, on which the circular through hole v is formed, and the other end of the spring 213 is fixedly connected with one end of the disc of the direction-changing pawl 212; the ratchet gear 214 is spline-mounted on one end of the bevel pinion shaft 6, which is close to one end of the bevel pinion 5.
Further, the flange-disk type connector 9 is a flange-disk type structure, and is formed by connecting a circular disk II and a hollow cylinder II by welding, wherein one end face of the cylinder II is removed, the other end face is provided with a circular hole, and the end face provided with the circular hole is the end face far away from the circular disk II; the gear shaft mounting body 12 is of a flange-like disc structure and is formed by sequentially connecting a circular disc III, an internal hollow cylinder III with two removed end faces and an internal hollow cylinder IV with two removed end faces through welding; one side surface of the rack type claw 18 is provided with teeth, two side surfaces adjacent to the side surface are provided with dovetail grooves, the teeth of the rack type claw 18 are meshed with the teeth of the small cylindrical gear II16, the dovetail grooves are respectively in clearance fit sliding connection with the dovetail protrusions of the guide base I19 and the dovetail protrusions of the guide base II20, and two end surfaces of the rack type claw 18 are of arc structures; one end of the small bevel gear shaft 6 is provided with a hexagon socket, and one end of the small bevel gear shaft 6 is used for installing the small bevel gear bearing 7.
As shown in fig. 1, 2, 3, 4, 5, and 6, the working method of the self-locking clamping device for clamping a test piece of the present invention comprises the following steps:
according to installation requirements, the bevel gear support body 2 is connected with the bevel gear disc 3 through the bevel gear disc bearing 4, the bevel gear disc 3 is meshed with the small bevel gear 5, the small bevel gear 5 is fixedly connected with the small bevel gear shaft 6 through a spline, and the small bevel gear shaft 6 is connected with the shell 1 through the small bevel gear bearing 7; fixedly connecting the bevel gear disc support body 2 with the blocking cover 8 through screws, fixedly connecting the blocking cover 8 with the gear shaft installation body 12 through screws, fixedly connecting the gear shaft installation body 12 with the cylindrical ring type connecting body 13 through screws, and fixedly connecting the cylindrical ring type connecting body 13 with the shell 1 through screws; fixedly connecting the bevel gear disc 3 and the flange disc type connecting body 9 with each other through screws, fixedly connecting the flange disc type connecting body 9 and the cylindrical outer gear ring 10 with each other through screws, and connecting the cylindrical outer gear ring 10 and the gear shaft mounting body 12 with each other through a cylindrical outer gear ring bearing 11; the cylindrical outer gear ring 10 is meshed with the small cylindrical gear I14, the small cylindrical gear I14 and the gear shaft 15 are fixedly connected with each other through splines, the gear shaft 15 and the small cylindrical gear II16 are fixedly connected with each other through splines, and the gear shaft 15 and the gear shaft installation body 12 are connected with each other through the gear shaft bearing 17; the small cylindrical gear II16 is meshed with the rack type claw 18, the rack type claw 18 is respectively connected with the guide base I19 and the guide base II20 in a sliding mode through clearance fit, and the guide base I19 and the guide base II20 are respectively fixedly connected with the gear shaft installation body 12 in a welding mode; the self-locking device 21 is placed between the shell 1 and the bevel pinion 5, a ratchet wheel 214 of the self-locking device 21 is mounted on the bevel pinion shaft 6 through a spline, a base 211 of the self-locking device 21 is fixedly connected with the shell 1 and the bevel gear disc support body 2 through screws, and a direction-changing pawl 212 of the self-locking device 21 is in clearance fit sliding connection with the bevel gear disc support body 2; the axes of the housing 1, the bevel-gear-disc support body 2, the bevel gear disc 3, the bevel-gear-disc bearing 4, the blocking cover 8, the flange-disc-type connecting body 9, the cylindrical outer gear ring 10, the cylindrical outer gear-ring bearing 11, the gear-shaft mounting body 12, and the cylindrical-ring-type connecting body 13 are on the same straight line; three sets of the pinion bevel gear 5, the pinion bevel gear shaft 6, the pinion bevel gear bearing 7, the small cylindrical gear I14, the gear shaft 15, the small cylindrical gear II16, the gear shaft bearing 17, the rack jaw 18, the guide base I19, the guide base II20, and the self-lock device 21 are provided, which are equally distributed around the same straight line; the shell 1, the bevel gear disc support body 2, the baffle cover 8, the gear shaft mounting body 12 and the cylindrical ring type connecting body 13 form a stator system, and the stator system does not rotate around a central axis in the process of clamping a test piece; and enabling the conical fluted disc 3, the flange disc type connecting body 9 and the cylindrical outer gear ring 10 to form a rotor system, and enabling the rotor system to rotate around the central axis in the process of clamping the test piece.
When the inner wall of the test piece is clamped, the adjusting knob of the direction-changing pawl 212 is lifted by hand along the axial direction of the elongated cylinder of the direction-changing pawl 212 and rotated, so that the wedge-shaped ratchet teeth are matched with the ratchet wheel 214, the bevel pinion shaft 6 can only rotate clockwise, that is, the rack-type jaw 18 can only move in the direction away from the central axis, and the self-locking of the clamping device is completed.
Clockwise rotating the small bevel gear shaft 6 by using an inner hexagonal wrench, and rotating the small bevel gear shaft 6 to further drive the small bevel gear 5 to rotate; the rotation of the small bevel gear 5 drives the bevel gear disc 3 to rotate, and further drives the flange disc type connecting body 9 to rotate; the rotation of the flange disc type connecting body 9 drives the cylindrical outer gear ring 10 to rotate, and further drives the small cylindrical gear I14 to rotate; the rotation of the small cylindrical gear I14 drives the gear shaft 15 to rotate, and further drives the small cylindrical gear II16 to rotate; rotation of small circle cylindrical gear II16 drives rack formula jack catch 18 makes the central axis is kept away from to rack formula jack catch 18's arc end, towards test piece inner wall motion, along with the increase of keeping away from at rack formula jack catch 18's arc end accomplishes the tight work of clamp of test piece.
When the outer wall of the test piece is clamped, the adjusting knob of the direction-changing pawl 212 is lifted by hand along the axial direction of the elongated cylinder of the direction-changing pawl 212 and rotated, so that the wedge-shaped ratchet teeth are matched with the ratchet wheel 214, the bevel pinion shaft 6 can only rotate anticlockwise, that is, the rack-type jaw 18 can only move towards the direction close to the central axis, and the self-locking of the clamping device is completed.
With hexagon socket wrench anticlockwise rotation pinion shaft 6, after above-mentioned drive mechanism's transmission, the rotation of small circle post gear II16 drives rack formula jack catch 18 makes linear motion, makes rack formula jack catch 18's arc end is close to the central axis, towards test piece outer wall motion, along with the increase that rack formula jack catch 18's arc end is close to accomplishes the tight work of clamp of test piece.
When the inner wall of the test piece is loosened, the adjusting knob of the direction-changing pawl 212 is lifted by hand along the axial direction of the elongated cylinder of the direction-changing pawl 212 and rotated, so that the wedge-type ratchet teeth and the ratchet wheel 214 are engaged with each other, the pinion shaft 6 can be rotated counterclockwise, that is, the rack-type jaw 18 can be moved in a direction close to the central axis, and the unlocking setting of the clamping device is completed.
The small bevel gear shaft 6 is rotated anticlockwise by an inner hexagonal wrench, and the small bevel gear shaft 6 rotates to drive the small bevel gear 5 to rotate; the rotation of the small bevel gear 5 drives the bevel gear disc 3 to rotate, and further drives the flange disc type connecting body 9 to rotate; the rotation of the flange disc type connecting body 9 drives the cylindrical outer gear ring 10 to rotate, and further drives the small cylindrical gear I14 to rotate; the rotation of the small cylindrical gear I14 drives the gear shaft 15 to rotate, and further drives the small cylindrical gear II16 to rotate; rotation of small circle cylindrical gear II16 drives rack formula jack catch 18 makes rack formula jack catch 18's arc end is close to the central axis, and test piece inner wall motion dorsad along with the increase that rack formula jack catch 18's arc end is close to accomplishes the work of loosening of test piece.
When the outer wall of the test piece is loosened, the adjusting knob of the direction-changing pawl 212 is lifted by hand along the axial direction of the elongated cylinder of the direction-changing pawl 212 and rotated, so that the wedge-type ratchet teeth and the ratchet wheel 214 are engaged with each other, the pinion shaft 6 can be rotated clockwise, that is, the rack-type jaw 18 can be moved in a direction away from the central axis, and the unlocking setting of the clamping device is completed.
With hexagon socket wrench clockwise turning bevel pinion shaft 6, after above-mentioned drive mechanism's transmission, rotation of small circle post gear II16 drives rack formula jack catch 18 makes linear motion, makes rack formula jack catch 18's arc end is close to and keeps away from the axis, and test piece outer wall motion dorsad is along with the increase of keeping away from at rack formula jack catch 18's arc end accomplishes the work of loosening of test piece.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A self-locking clamping device for clamping a test piece, comprising: the gear rack comprises a shell (1), a bevel gear disk support body (2), a bevel gear disk (3), a bevel gear disk bearing (4), a small bevel gear (5), a small bevel gear shaft (6), a small bevel gear bearing (7), a baffle cover (8), a flange disk type connector (9), a cylindrical outer gear ring (10), a cylindrical outer gear ring bearing (11), a gear shaft installation body (12), a cylindrical ring type connector (13), a small cylindrical gear I (14), a gear shaft (15), a small cylindrical gear II (16), a gear shaft bearing (17), a rack type clamping jaw (18), a guide base I (19), a guide base II (20) and a self-locking device (21); the bevel gear disc support body (2) is connected with the bevel gear disc (3) through the bevel gear disc bearing (4), the bevel gear disc (3) is meshed with the small bevel gear (5), the small bevel gear (5) is fixedly connected with the small bevel gear shaft (6) through a spline, and the small bevel gear shaft (6) is connected with the shell (1) through the small bevel gear bearing (7); the bevel gear disc support body (2) is fixedly connected with the blocking cover (8) through screws, the blocking cover (8) is fixedly connected with the gear shaft installation body (12) through screws, the gear shaft installation body (12) is fixedly connected with the cylindrical ring type connecting body (13) through screws, and the cylindrical ring type connecting body (13) is fixedly connected with the shell (1) through screws; the bevel gear disc (3) and the flange disc type connecting body (9) are fixedly connected with each other through screws, the flange disc type connecting body (9) and the cylindrical outer gear ring (10) are fixedly connected with each other through screws, and the cylindrical outer gear ring (10) and the gear shaft mounting body (12) are connected with each other through a cylindrical outer gear ring bearing (11); the cylindrical outer gear ring (10) is meshed with the small cylindrical gear I (14), the small cylindrical gear I (14) is fixedly connected with the gear shaft (15) through splines, the gear shaft (15) is fixedly connected with the small cylindrical gear II (16) through splines, and the gear shaft (15) is connected with the gear shaft mounting body (12) through the gear shaft bearing (17); the small cylindrical gear II (16) is meshed with the rack type clamping jaw (18), the rack type clamping jaw (18) is in clearance fit sliding connection with the guide base I (19) and the guide base II (20) respectively, and the guide base I (19) and the guide base II (20) are fixedly connected with the gear shaft installation body (12) respectively in a welding mode; the self-locking device (21) is positioned between the shell (1) and the small bevel gear (5), a ratchet wheel (214) of the self-locking device (21) is mounted on the small bevel gear shaft (6) through a spline, a base (211) of the self-locking device (21) is fixedly connected with the shell (1) and the bevel fluted disc support body (2) through screws respectively, and a direction-changing pawl (212) of the self-locking device (21) is in clearance fit sliding connection with the bevel fluted disc support body (2); the axes of the shell (1), the conical-toothed-disc support body (2), the conical toothed disc (3), the conical-toothed-disc bearing (4), the blocking cover (8), the flange-disc-type connecting body (9), the cylindrical outer gear ring (10), the cylindrical outer gear ring bearing (11), the gear shaft mounting body (12) and the cylindrical-ring-type connecting body (13) are on the same straight line; the small bevel gear (5), the small bevel gear shaft (6), the small bevel gear bearing (7), the small cylindrical gear I (14), the gear shaft (15), the small cylindrical gear II (16), the gear shaft bearing (17), the rack type claw (18), the guide base I (19), the guide base II (20) and the self-locking device (21) are respectively provided with three sets which surround the same straight line and are distributed in an equal division manner.
2. The self-locking clamping device for clamping a test piece is characterized in that the shell (1) is of a hollow cylinder structure, one end face of the cylinder is removed, the other end face of the cylinder is provided with a circular through hole I, three threaded holes equally divided around an axis are formed in the periphery of the circular through hole I, and one end of the shell (1) provided with the threaded holes is connected with one end of the cylindrical ring type connecting body (13) through a screw; the side surface of the cylinder is provided with three circular through holes II, the axes of the three circular through holes II are on the same plane I, the plane I is parallel to the two end surfaces, and the plane I is positioned on one side of the central symmetry plane of the two end surfaces and is close to the removed end surface; the side surface of the cylinder is provided with three circular through holes III, the axes of the three circular through holes III are on the same plane II, and the plane II and the plane I are symmetrical about the central symmetry plane of the two end surfaces.
3. The self-locking clamping device for clamping a test piece according to claim 2, wherein the conical-toothed disc support body (2) is located inside one end of the housing (1), and one end of the housing (1) is the end with the end face removed; the conical fluted disc support body (2) is of a flange disc type structure, an annular disc I and a hollow cylinder I with two removed end faces are connected with each other through welding, three circular through holes IV are formed in the edge of the annular disc I, a direction-changing pawl (212) of a self-locking device (21) is connected with the circular through holes IV in a sliding mode in a clearance fit mode, a step circular groove is formed in one end of the hollow cylinder I, and one end of the step circular groove is far away from one end of the annular disc I.
4. A self-locking clamping device for clamping a test piece according to claim 3, characterized in that the self-locking device (21) comprises: the device comprises a base (211), a direction-changing pawl (212), a spring (213) and a ratchet wheel (214); the base (211) is of a hollow cuboid structure, one end face of the base is removed, the other end face of the base is provided with a circular through hole V, one side face of the base is fixedly installed on the inner side face of the shell (1) through screws, and the end face of the base (211) is fixedly installed on the outer edge of the circular ring disc I of the bevel gear disc supporting body (2) through screws; the direction-changing pawl (212) is positioned in the base (211) and fixedly installed together through an adjusting knob, a long and thin cylinder, a disc and wedge-shaped ratchet teeth sequentially through threads, the long and thin cylinder of the direction-changing pawl (212) is sequentially and respectively connected with the circular through hole IV of the bevel-gear disc support body (2) and the circular through hole V of the base (211) of the self-locking device (21) in a sliding mode in a clearance fit mode, the spring (213) is sleeved outside the long and thin cylinder of the direction-changing pawl (212), and the wedge-shaped ratchet teeth of the direction-changing pawl (212) and the ratchet wheel (214) are installed in a matched mode; one end of the spring (213) is fixedly connected with one end of the base (211) provided with the circular through hole V, and the other end of the spring (213) is fixedly connected with one end of the disc of the direction-changing pawl (212); the ratchet wheel (214) is mounted at one end of the small bevel gear shaft (6) through a spline and is close to one end of the small bevel gear (5).
5. The self-locking clamping device for clamping a test piece as claimed in claim 4, wherein the flange-disk type connecting body (9) is a flange-disk type structure, a circular disk II and an internal hollow cylinder II are connected together by welding, one end face of the cylinder II is removed, the other end face is provided with a circular hole, and the end face provided with the circular hole is the end face far away from the circular disk II.
6. The self-locking clamping device for clamping the test piece as recited in claim 5, wherein the gear shaft mounting body (12) is of a flange-like disc structure, and is formed by sequentially connecting a circular disc III, an internal hollow cylinder III with two removed end faces and an internal hollow cylinder IV with two removed end faces through welding.
7. The self-locking clamping device for clamping the test piece according to claim 6, wherein one side surface of the rack type clamping jaw (18) is provided with teeth, two side surfaces adjacent to the side surface are provided with dovetail grooves, the teeth of the rack type clamping jaw (18) are meshed with the teeth of the small cylindrical gear II (16), the dovetail grooves are respectively in clearance fit sliding connection with the dovetail protrusions of the guide base I (19) and the dovetail protrusions of the guide base II (20), and two end surfaces of the rack type clamping jaw (18) are of arc structures.
8. The self-locking clamping device for clamping the test piece as claimed in claim 7, characterized in that one end of the bevel pinion shaft (6) is provided with a hexagon socket, and one end of the bevel pinion shaft (6) is the end for mounting the bevel pinion bearing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645421.8U CN209850758U (en) | 2019-04-30 | 2019-04-30 | Self-locking clamping device for clamping test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645421.8U CN209850758U (en) | 2019-04-30 | 2019-04-30 | Self-locking clamping device for clamping test piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209850758U true CN209850758U (en) | 2019-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920645421.8U Expired - Fee Related CN209850758U (en) | 2019-04-30 | 2019-04-30 | Self-locking clamping device for clamping test piece |
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| Country | Link |
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| CN (1) | CN209850758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633227A (en) * | 2020-06-02 | 2020-09-08 | 南京天普机电产品制造有限公司 | Jack catch self-locking device is used in processing of rail vehicle spare part |
-
2019
- 2019-04-30 CN CN201920645421.8U patent/CN209850758U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633227A (en) * | 2020-06-02 | 2020-09-08 | 南京天普机电产品制造有限公司 | Jack catch self-locking device is used in processing of rail vehicle spare part |
| CN111633227B (en) * | 2020-06-02 | 2022-11-25 | 南京天普机电产品制造有限公司 | Jack catch self-locking device is used in processing of rail vehicle spare part |
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Granted publication date: 20191227 Termination date: 20200430 |