CN209919718U - Self-locking clamping device for clamping inner wall of test piece - Google Patents
Self-locking clamping device for clamping inner wall of test piece Download PDFInfo
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- CN209919718U CN209919718U CN201920615963.0U CN201920615963U CN209919718U CN 209919718 U CN209919718 U CN 209919718U CN 201920615963 U CN201920615963 U CN 201920615963U CN 209919718 U CN209919718 U CN 209919718U
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Abstract
The utility model relates to a from locking-type clamping device for centre gripping test piece inner wall, 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 large cylindrical gear, a gear shaft, a small cylindrical gear, a gear shaft bearing, a rack type clamping jaw, a guide base and a self-locking device; the utility model relates to a from locking-type clamping device for centre gripping test piece inner wall passes through self-locking device's pawl and ratchet mutually support, thereby accomplish clamping device's auto-lock makes clamping device has the function of auto-lock, through a series of drive mechanism, makes the central axis is kept away from to the arc end of rack formula jack catch, towards the motion of test piece inner wall, accomplishes the tight work of clamp of test piece, 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 who is used for centre gripping test piece inner wall.
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 inner wall.
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 centre gripping test piece inner wall 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 an inner wall of 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 large cylindrical gear, a gear shaft, a small cylindrical gear, a gear shaft bearing, a rack type clamping jaw, a guide base 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 large cylindrical gear, the large cylindrical gear is fixedly connected with the gear shaft through splines, the gear shaft is fixedly connected with the small cylindrical gear through splines, the gear shaft is connected with the gear shaft mounting body through the gear shaft bearing, the small cylindrical gear is meshed with the rack type clamping jaw, the rack type clamping jaw is in clearance fit sliding connection with the guide base, and the guide base is fixedly connected with the gear shaft mounting body through a welding mode; the self-locking device is positioned between the shell and the small bevel gear, a ratchet wheel of the self-locking device is arranged on the small bevel gear shaft through a spline, a base of the self-locking device is fixedly connected with the shell through a screw, and an adjusting screw rod of the self-locking device is connected with the shell through a thread; 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 large cylindrical gear, the gear shaft, the small cylindrical gear, the gear shaft bearing, the rack type clamping jaw, the guide base and the self-locking device are respectively provided with three sets which are equally distributed around the same straight line.
Furthermore, the shell is of a cylindrical structure with a hollow interior, one end face of the cylinder is removed, the other end face of the cylinder is provided with three threaded holes equally divided around the axis, and one end of the shell, provided with the threaded holes, is connected with one end of the cylindrical ring type connecting body through screws; the side surface of the cylinder is provided with three circular through holes I, the axes of the three circular through holes I 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 threaded through holes, the axes of the three threaded through holes are on the same plane II, and the plane II is positioned beside the plane I; 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 III, and the plane III and the plane I are symmetrical about the central symmetry planes of the two end surfaces.
Further, the self-locking device includes: the device comprises a base, a spring, a support frame, an adjusting screw rod, a pawl and a ratchet wheel; the base is of a cuboid structure and is fixedly mounted on the inner side surface of the shell through screws, the spring is welded at one end of the side surface of the base, and the support frame is welded at the other end of the side surface of the base; the support frame is of a quadrangular frustum pyramid structure, the lower bottom surface end of the support frame is welded on the base, and the upper bottom surface end of the support frame is hinged to one side, away from the middle of the pawl, of the middle of the pawl and is away from teeth of the pawl; the adjusting screw is arranged on the inner side of one end, far away from the teeth of the pawl, of the adjusting screw in a matched mode, the adjusting screw is fixedly arranged together through a screw rod, a cylinder and a circular truncated cone in sequence through threads, a shell made of an elastomer material with high resilience is glued outside the cylinder and the circular truncated cone, the screw rod of the adjusting screw is connected with the thread through hole of the shell through threads, and the cylindrical shell of the adjusting screw and the shell of the circular truncated cone are in contact fit with the inner side of one end, far away from the teeth of the pawl; one end of the spring is welded on the base, and the other end of the spring is welded on the other side of the middle of the pawl and is close to one side of teeth of the pawl; the ratchet wheel is installed at one end, close to teeth of the pawl, of the small bevel gear shaft in a matched mode, and the ratchet wheel is installed at one end, close to the small bevel gear, of the small bevel gear shaft through a spline.
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, the circular ring disc I and the hollow cylinder I with two removed end faces are connected together through welding, a stepped circular groove is formed in one end of the hollow cylinder I, and one end, away from the circular ring disc I, of the hollow cylinder I is provided with the stepped circular groove.
Furthermore, the flange-disk type connecting body is of a flange-disk type structure, the annular disk II and the cylinder II which is hollow inside 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 an end face far away from the annular 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, a dovetail groove is formed in the side face adjacent to the side face, the teeth of the rack type clamping jaw are meshed with the teeth of the small cylindrical gear, the dovetail groove is connected with the dovetail protrusion of the guide base in a clearance fit sliding mode, an end face of the rack type clamping jaw is of an arc-shaped structure, and one end face of the rack type clamping jaw is one end of a clamping test piece.
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 inner wall, its beneficial effect lies in:
(1) the utility model relates to a self-locking clamping device for clamping the inner wall of a test piece.A hexagon socket wrench is used for clockwise rotating a small bevel gear shaft, and the small bevel gear shaft rotates to further drive the small bevel gear 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 plate type connecting body drives the cylindrical outer gear ring to rotate, so that the large cylindrical gear is driven to rotate; the rotation of the large cylindrical gear drives the gear shaft to rotate, and further drives the small cylindrical gear to rotate; the rotation of small circle cylindrical gear drives rack formula jack catch makes linear motion the central axis is kept away from to the arc end of rack formula jack catch, towards test piece inner wall motion, along with the increase of keeping away from is held away from to the arc end of rack formula jack catch, accomplishes the tight work of clamp of test piece, has simple structure, compactness, and the manufacturability is good, advantages such as convenient operation.
(2) A self-locking clamping device for clamping the inner wall of a test piece is characterized in that an adjusting screw rod is screwed clockwise by a hand, the adjusting screw rod rotates and moves downwards at the same time, a circular truncated cone side surface of the adjusting screw rod pushes a pawl to rotate, and the pawl is matched with a ratchet wheel, so that a bevel pinion shaft can only rotate clockwise, namely a rack type clamping jaw can only move towards a direction far away from a central axis and can not move towards a direction close to the central axis, and the self-locking of the clamping device is completed, and the clamping device has a self-locking function.
Drawings
Fig. 1 is an external view of a self-locking clamping device for clamping the inner wall of 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 the inner wall of the test piece of the present invention;
FIG. 3 is an exploded view of the shelling structure of the self-locking clamping device for clamping the inner wall of the 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 the inner wall of the 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 the inner wall of a test piece according to the present invention;
FIG. 6 is a two-dimensional view of a flange plate type connector of a self-locking clamping device for clamping the inner wall of 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 small bevel gear-5, a small bevel gear shaft-6, a small bevel gear 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 large cylindrical gear-14, a gear shaft-15, a small cylindrical gear-16, a gear shaft bearing-17, a rack type claw-18, a guide base-19, a self-locking device-20, a base-201, a spring-202, a support frame-203, an adjusting screw-204, a pawl-205 and a ratchet-206.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4, 5 and 6, a self-locking clamping device for clamping the inner wall of a test piece comprises: 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 small bevel gear 5, a small bevel gear shaft 6, a small bevel gear 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 large cylindrical gear 14, a gear shaft 15, a small cylindrical gear 16, a gear shaft bearing 17, a rack type clamping jaw 18, a guide base 19 and a self-locking device 20; 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 large cylindrical gear 14, the large cylindrical gear 14 is fixedly connected with the gear shaft 15 through splines, the gear shaft 15 is fixedly connected with the small cylindrical gear 16 through splines, the gear shaft 15 is connected with the gear shaft mounting body 12 through the gear shaft bearing 17, the small cylindrical gear 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 19, and the guide base 19 is fixedly connected with the gear shaft mounting body 12 through welding; the self-locking device 20 is positioned between the shell 1 and the bevel pinion 5, a ratchet wheel 206 of the self-locking device 20 is mounted on the bevel pinion shaft 6 through a spline, a base 201 of the self-locking device 20 is fixedly connected with the shell 1 through a screw, and an adjusting screw 204 of the self-locking device 20 is connected with the shell 1 through a thread; 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 large cylindrical gear 14, the pinion shaft 15, the small cylindrical gear 16, the pinion shaft bearing 17, the rack-type claw 18, the guide base 19, and the self-locking device 20 are respectively provided with three sets, and the three sets 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 cylindrical structure is removed, the other end face is provided with three threaded holes equally divided around the axis, 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 I, the axes of the three circular through holes I 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 threaded through holes, the axes of the three threaded through holes are on the same plane II, and the plane II is positioned beside the plane I; 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 III, and the plane III and the plane I are symmetrical about the central symmetry planes of the two end surfaces.
Further, the self-locking device 20 includes: the device comprises a base 201, a spring 202, a support bracket 203, an adjusting screw 204, a pawl 205 and a ratchet 206; the base 201 is of a cuboid structure and is fixedly mounted on the inner side surface of the shell 1 through screws, one end of the side surface of the base 201 is welded with the spring 202, and the other end of the side surface of the base 201 is welded with the support frame 203; the supporting frame 203 is in a quadrangular frustum pyramid structure, the lower bottom surface end of the supporting frame 203 is welded on the base 201, and the upper bottom surface end is hinged to one side, which is far away from teeth of the pawl 205, of the middle of the pawl 205; the adjusting screw 204 is installed on the inner side of one end, far away from the teeth of the pawl 205, of the adjusting screw 204, the screw, the cylinder and the circular truncated cone are sequentially and fixedly installed together through threads, the outer portions of the cylinder and the circular truncated cone are glued with a shell made of an elastomer material with high resilience, the screw of the adjusting screw 204 is connected with the threaded through hole of the shell 1 through threads, and the cylindrical shell and the circular truncated cone shell of the adjusting screw 204 are in contact fit with the inner side of one end, far away from the teeth of the pawl 205; one end of the spring 202 is welded on the base 201, and the other end is welded on the other side of the middle of the pawl 205 and is close to one side of the teeth of the pawl 205; one end of the tooth near the pawl 205 is fitted with the ratchet gear 206, and the ratchet gear 206 is spline-mounted at one end of the bevel pinion shaft 6 and near one end of the bevel pinion 5.
Further, the conical fluted 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 and is formed by mutually connecting a circular disc I and an internal hollow cylinder I with two removed end faces through welding, wherein one end of the internal hollow cylinder I is provided with a step circular groove, and the other end of the internal hollow cylinder I is far away from the circular disc I; the flange-disc type connecting body 9 is of a flange-disc type structure and is formed by mutually connecting a circular disc II and a hollow cylinder II 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 an end face far away from the circular disc 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 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 16, the dovetail grooves are in clearance fit sliding connection with dovetail protrusions of the guide base 19, one end surface of the rack type clamping jaw 18 is of an arc structure, and one end surface of the rack type clamping jaw 18 is one end for clamping a test piece; 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 the inner wall of the 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 large cylindrical gear 14, the large cylindrical gear 14 is fixedly connected with the gear shaft 15 through splines, the gear shaft 15 is fixedly connected with the small cylindrical gear 16 through splines, the gear shaft 15 is connected with the gear shaft mounting body 12 through the gear shaft bearing 17, the small cylindrical gear 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 19, and the guide base 19 is fixedly connected with the gear shaft mounting body 12 through welding; placing the self-locking device 20 between the shell 1 and the bevel pinion 5, wherein a ratchet 206 of the self-locking device 20 is mounted on the bevel pinion shaft 6 through a spline, a base 201 of the self-locking device 20 is fixedly connected with the shell 1 through a screw, and an adjusting screw 204 of the self-locking device 20 is connected with the shell 1 through a thread; 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 small bevel gear 5, the small bevel gear shaft 6, the small bevel gear bearing 7, the large cylindrical gear 14, the gear shaft 15, the small cylindrical gear 16, the gear shaft bearing 17, the rack type jaw 18, the guide base 19 and the self-locking device 20 are respectively distributed around the same straight line in equal parts; 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 a test piece is clamped, the adjusting screw 204 is screwed clockwise by hand, the adjusting screw 204 rotates and moves downwards at the same time, the circular truncated cone side surface of the adjusting screw 204 pushes the pawl 205 to rotate, and then the pawl 205 and the ratchet wheel 206 are matched with each other, so that the bevel pinion shaft 6 can only rotate clockwise, namely the rack type clamping jaw 18 can only move towards the direction far away from the central axis and can not move towards the direction close to the central axis, and the self-locking setting 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 large cylindrical gear 14 to rotate; the rotation of the large cylindrical gear 14 drives the gear shaft 15 to rotate, and further drives the small cylindrical gear 16 to rotate; rotation of small cylindrical gear 16 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 is kept away from to rack formula jack catch 18's arc end, accomplishes the tight work of clamp of test piece.
When a test piece is loosened, the adjusting screw 204 is screwed counterclockwise by hand, the adjusting screw 204 moves upward while rotating, the circular truncated cone side surface of the adjusting screw 204 is far away from the pawl 205, the compressed spring 202 freely extends to push the pawl 205 to rotate, the pawl 205 and the ratchet wheel 206 are further separated from each other, the condition that the bevel pinion shaft 6 can only rotate clockwise is eliminated, the rack type clamping jaws 18 can move in the 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 large cylindrical gear 14 to rotate; the rotation of the large cylindrical gear 14 drives the gear shaft 15 to rotate, and further drives the small cylindrical gear 16 to rotate; the rotation of small cylindrical gear 16 drives rack formula jack catch 18 makes linear motion, 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.
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 the inner wall of a test piece is characterized by comprising: the gear rack comprises a shell (1), a bevel gear disc support body (2), a bevel gear disc (3), a bevel gear disc 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 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 large cylindrical gear (14), a gear shaft (15), a small cylindrical gear (16), a gear shaft bearing (17), a rack type clamping jaw (18), a guide base (19) and a self-locking device (20); 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 large cylindrical gear (14), the large cylindrical gear (14) is fixedly connected with the gear shaft (15) through splines, the gear shaft (15) is fixedly connected with the small cylindrical gear (16) through splines, the gear shaft (15) is connected with the gear shaft mounting body (12) through the gear shaft bearing (17), the small cylindrical gear (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 (19), and the guide base (19) is fixedly connected with the gear shaft mounting body (12) in a welding mode; the self-locking device (20) is positioned between the shell (1) and the small bevel gear (5), a ratchet wheel (206) of the self-locking device (20) is arranged on the small bevel gear shaft (6) through a spline, a base (201) of the self-locking device (20) is fixedly connected with the shell (1) through a screw, and an adjusting screw rod (204) of the self-locking device (20) is connected with the shell (1) through a thread; 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 large cylindrical gear (14), the gear shaft (15), the small cylindrical gear (16), the gear shaft bearing (17), the rack type claw (18), the guide base (19) and the self-locking device (20) 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 the inner wall of 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 three threaded holes equally divided around an axis, 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 screws; the side surface of the cylinder is provided with three circular through holes I, the axes of the three circular through holes I 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 threaded through holes, the axes of the three threaded through holes are on the same plane II, and the plane II is positioned beside the plane I; 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 III, and the plane III and the plane I are symmetrical about the central symmetry planes of the two end surfaces.
3. The self-locking clamping device for clamping the inner wall of a test piece according to claim 2, characterized in that the self-locking device (20) comprises: the device comprises a base (201), a spring (202), a support frame (203), an adjusting screw rod (204), a pawl (205) and a ratchet wheel (206); the base (201) is of a cuboid structure and is fixedly mounted on the inner side surface of the shell (1) through screws, the spring (202) is welded at one end of the side surface of the base (201), and the support frame (203) is welded at the other end of the side surface of the base (201); the supporting frame (203) is of a quadrangular frustum pyramid structure, the lower bottom surface end of the supporting frame (203) is welded on the base (201), and the upper bottom surface end is hinged to one side, away from the middle of the pawl (205), of the tooth of the pawl (205); the adjusting screw rod (204) is installed on the inner side of one end, far away from the teeth of the pawl (205), of the adjusting screw rod (204), a cylinder and a circular truncated cone are sequentially and fixedly installed together through threads, a shell made of an elastomer material with high resilience is glued outside the cylinder and the circular truncated cone, the screw rod of the adjusting screw rod (204) is connected with the thread through hole of the shell (1) through threads, and the cylinder shell of the adjusting screw rod (204) and the shell of the circular truncated cone are in contact fit with the inner side of one end, far away from the teeth of the pawl (205); one end of the spring (202) is welded on the base (201), the other end of the spring is welded on the other side of the middle of the pawl (205), and the spring is close to one side of teeth of the pawl (205); one end of the tooth close to the pawl (205) is provided with the ratchet wheel (206) in a matching way, and the ratchet wheel (206) is arranged 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).
4. The self-locking clamping device for clamping the inner wall of a test piece according to claim 3, wherein the conical fluted 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 conical fluted disc support body (2) is of a flange disc type structure, and is formed by mutually connecting a circular disc I and an internal hollow cylinder I with two removed end faces together through welding, wherein a step circular groove is formed in one end of the internal hollow cylinder I, and one end with the step circular groove is far away from one end of the circular disc I.
5. The self-locking clamping device for clamping the inner wall of a test piece as claimed in claim 4, wherein the flange-disk type connecting body (9) is a flange-disk type structure, and is formed by a circular disk II and an inner hollow cylinder II which are connected together through 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 an end face far away from the circular disk II.
6. The self-locking clamping device for clamping the inner wall of the test piece as claimed 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 inner wall of 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 (16), the dovetail grooves are in clearance fit sliding connection with the dovetail protrusions of the guide base (19), one end surface of the rack type clamping jaw (18) is of an arc structure, and one end surface of the rack type clamping jaw (18) is one end for clamping the test piece.
8. The self-locking clamping device for clamping the inner wall of 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 |
|---|---|---|---|
| CN201920615963.0U CN209919718U (en) | 2019-04-30 | 2019-04-30 | Self-locking clamping device for clamping inner wall of test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920615963.0U CN209919718U (en) | 2019-04-30 | 2019-04-30 | Self-locking clamping device for clamping inner wall of test piece |
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| Publication Number | Publication Date |
|---|---|
| CN209919718U true CN209919718U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920615963.0U Expired - Fee Related CN209919718U (en) | 2019-04-30 | 2019-04-30 | Self-locking clamping device for clamping inner wall of test piece |
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| Country | Link |
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| CN (1) | CN209919718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600262A (en) * | 2020-05-13 | 2020-08-28 | 常州大学 | Dedicated antiskid of damper is from locking fastener |
-
2019
- 2019-04-30 CN CN201920615963.0U patent/CN209919718U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111600262A (en) * | 2020-05-13 | 2020-08-28 | 常州大学 | Dedicated antiskid of damper is from locking fastener |
| CN111600262B (en) * | 2020-05-13 | 2021-03-23 | 常州大学 | Dedicated antiskid of damper is from locking fastener |
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Granted publication date: 20200110 Termination date: 20210430 |