CN113635697A - Supporting platform of jade carving machine - Google Patents

Abstract

The invention relates to the technical field of supporting platform devices, in particular to a supporting platform of a jade carving machine. A supporting platform of a jade carving machine comprises a supporting platform and a supporting module. The supporting module comprises a base, a fixed shaft, a swing arm, a transmission mechanism, a limiting mechanism and a moment balance mechanism. The transmission mechanism comprises a swing shaft, a transmission belt, a pushing piece and a ratchet mechanism. Through the arrangement of the transmission belt and the ratchet mechanism, the swing arm drives the transmission belt to rotate around the fixed shaft and the swing shaft when swinging, when the transmission belt rotates, the transmission belt acts on the ratchet mechanism, the ratchet mechanism pushes the pushing piece towards one side facing to the extending direction of the swing arm and away from the axis of the fixed shaft, the pushing piece pushes the swing arm, the rotating friction force between the swing arm and the fixed shaft is reduced, the swing arm is easier to keep in a vertical state, namely, the supporting table is closer to the horizontal state, and the jade carving machine is horizontally arranged.

Description

Supporting platform of jade carving machine

Technical Field

The invention relates to the technical field of supporting platform devices, in particular to a supporting platform of a jade carving machine.

Background

Jade engraver is one kind and is used for jade production and processing in-process, carve to appointed pattern to raw and other materials, make its auxiliary device who better sells, it has obtained extensive use in jade processing's field, the carving action is little accurate when jade is carved, there is higher requirement to supporting platform's steadiness and levelness, and it is not horizontal often to support ground, current supporting platform can't be according to the adjustment of the gradient adaptability who supports ground, need for a steadiness just be convenient for adjust the better supporting platform of levelness urgently.

Disclosure of Invention

The invention provides a supporting platform of a jade carving machine, which aims to solve the problem that the existing supporting platform for placing the jade carving machine cannot be adaptively adjusted according to the inclination of the supporting ground.

The supporting platform of the jade carving machine adopts the following technical scheme:

a supporting platform of a jade carving machine comprises a supporting platform and a supporting module. The supporting module comprises a base, a fixed shaft, a swing arm, a transmission mechanism, a limiting mechanism and a moment balance mechanism. The fixed shaft is arranged along the front-back direction and is arranged on the base. The upper end of the swing arm is rotatably arranged on the base around the fixed shaft, and the supporting table is arranged at the upper end of the swing arm along the extending direction vertical to the swing arm. The transmission mechanism comprises a swing shaft, a transmission belt, a pushing piece and a ratchet mechanism; the swing shaft is rotatably arranged on the swing arm around an axis extending back and forth, the upper end of the transmission belt is sleeved on the fixed shaft, and the lower end of the transmission belt is sleeved on the swing shaft so as to drive the transmission belt to rotate around the fixed shaft and the swing shaft when the swing arm swings; the pushing piece is slidably arranged on the swing arm along the length direction of the swing arm; the ratchet mechanism is configured to push the pushing piece towards the extending direction of the swing arm and away from one side of the axis of the fixed shaft when the transmission belt rotates, so that the pushing piece pushes the swing arm. The limiting mechanism is configured to enable the ratchet mechanism to reciprocate within a certain range when the speed reaches a preset value in the process that the swing arm swings from the outermost end to the vertical state, and then the ratchet mechanism stops pushing the pushing piece. The torque balancing mechanism is configured to generate a torque in a direction opposite to the resistive torque of the belt, thereby balancing the resistive torque of the belt.

Furthermore, an installation groove is formed in the swing arm, the installation groove extends along the length direction of the swing arm, and the pushing piece comprises a lifting spring and a pushing block; the upper end of the lifting spring is connected to the top wall of the mounting groove, and the inner end of the pushing block extends into the mounting groove and is positioned below the lifting spring; the ratchet mechanism comprises a ratchet belt, a ratchet plate and a reverse mechanism; the ratchet belt is arranged on the transmission belt; the ratchet plate is slidably arranged on the swing arm along the extension direction of the swing arm; the reversing mechanism is used for converting the rotation of the transmission belt into the reverse movement of the ratchet plate; the inner side of the pushing block is provided with a plurality of fixed ratchets which are meshed with the ratchet belt and the ratchet plate, and the fixed ratchets, the ratchet plate and the ratchet belt are configured to drive the pushing block to move upwards only when the ratchet belt or the ratchet plate moves upwards; the limiting mechanism comprises a centrifugal comb, a plurality of movable ratchets and a tension spring; the centrifugal comb is slidably arranged on the pushing block along the extending direction of the swing arm, a plurality of racks sequentially arranged along the up-down direction are arranged at the inner end of the centrifugal comb, an inclined plane which inclines outwards from top to bottom is arranged at the inner end of each rack, and a balancing weight is arranged at the lower end of each rack; the movable ratchets and the fixed ratchets are alternately arranged, the outer ends of the movable ratchets are in sliding fit with the inclined surfaces of the racks, and the inner ends of the movable ratchets are flush with the inner side surfaces of the fixed ratchets; the upper end of the tension spring is connected with the pushing block, and the lower end of the tension spring is connected with the centrifugal comb.

Further, the reversing mechanism includes a rack plate and a transmission wheel; the rack plate is slidably arranged along the extending direction of the swing arm, and the ratchet plate is mounted on the rack plate; the driving wheel is rotatably arranged on the swing arm around the axis extending forwards and backwards, one side of the driving wheel is in transmission fit with the transmission belt, and the other side of the driving wheel is meshed with the rack plate; the limiting mechanism further comprises a damper, one end of the damper is installed on the pushing block, and the other end of the damper is installed on the centrifugal comb.

Further, the drive belt includes a first vertical section and a second vertical section; the number of the ratchet mechanisms is four, every two ratchet mechanisms form a group, and the transmission mechanisms of each group are symmetrically arranged relative to the first vertical section or the second vertical section.

Furthermore, a rotating groove penetrates through the middle part of the oscillating shaft along the axial direction of the oscillating shaft, and a plurality of first limiting blocks are uniformly distributed on the peripheral wall of the rotating groove; the torque balancing device comprises a rotating shaft, a second limiting block and a plurality of vibrating springs; the rotating shaft is rotatably arranged on the swing arm around the axis of the rotating groove, a plurality of second limiting blocks are uniformly distributed along the circumferential direction of the rotating shaft, and the first limiting blocks and the second limiting blocks are alternately arranged; a plurality of vibrating spring revolute the circumference equipartition of rotation shaft, and every vibrating spring's one end is connected in first stopper, and the other end is connected in the second stopper.

Furthermore, a deflector rod is further mounted at the front end of the rotating shaft, and the deflector rod is horizontally arranged in an initial state.

Furthermore, a plurality of ratchets on the ratchet belt are distributed at intervals, the distance between every two adjacent ratchets is the same as the height of each ratchet, and the fixed ratchets and the movable ratchets are the same in height and the same in height as the ratchets on the ratchet belt and have elasticity.

Furthermore, a horizontal sliding surface is arranged at the upper end of the fixed ratchet and is vertical to the ratchet plate, and the lower end of the movable ratchet is slidably arranged along the horizontal sliding table.

Furthermore, the supporting module also comprises a locking mechanism, the locking mechanism comprises a limiting screw hole and a locking screw, and the limiting screw hole penetrates through the surface of the fixed shaft from the upper end of the swing arm; the locking screw is inserted into the limiting screw hole, and the inner end of the locking screw abuts against the fixed shaft and is used for fixing the oscillating bar and the base.

The support platform of the jade carving machine as claimed in claim 1, wherein: the height adjusting device further comprises a height adjusting module, wherein the height adjusting module is arranged between the supporting platform and the swing arm and used for adjusting the height of the supporting platform.

The invention has the beneficial effects that: according to the support platform of the jade carving machine, the transmission belt and the ratchet mechanism are arranged, so that the swing arm drives the transmission belt to rotate around the fixed shaft and the swing shaft when swinging, when the transmission belt rotates, the transmission belt acts on the ratchet mechanism, the ratchet mechanism pushes the pushing piece towards one side, facing to the extending direction of the swing arm and far away from the axis of the fixed shaft, the pushing piece pushes the swing arm, the rotating friction force between the swing arm and the fixed shaft is reduced, the swing arm is easier to keep in a vertical state, namely, the support platform is closer to the horizontal state, and the jade carving platform is in a horizontal position. Through setting up stop gear, make ratchet reciprocating motion in certain extent when the in-process speed that the swing arm swung to vertical state by outermost end reaches the default, and then make ratchet stop to push away the action of impeller, ratchet produces certain vibration effect to the swing arm, makes the swing arm keep vertical state more easily, and prevents the excessive lifting of swing arm. Through setting up moment balance mechanism, increase an extra torque to the most resistance distance of drive belt falls in the balance, and then guarantee the straightness that hangs down of swing arm.

Further, stop gear includes centrifugal comb, a plurality of activity ratchet and extension spring. When the swing arm swings, the centrifugal comb is driven by the centrifugal force of the balancing weight to pull the tension spring to move towards one side far away from the fixed shaft, and the movable ratchet is pushed and pushed under the action of the inclined surface of the helical rack, so that the movable ratchet moves towards one side close to the ratchet plate and the ratchet belt. When the swing arm is about to stop swinging, the centrifugal force of the balancing weight is reduced, the pulling force of the tension spring is not enough overcome, finally, the tension spring pulls the centrifugal comb to reset, the centrifugal comb pulls the movable teeth to move outwards through the plurality of helical racks, the ratchet grooves formed by the two plurality of movable ratchets and the plurality of fixed ratchets are sparse, and meanwhile, the ratchet racks and the ratchet plates do reciprocating movement in the sparse ratchet grooves because the moving range of the ratchet belts and the ratchet plates is reduced, the pushing block is not pushed to move upwards any more, and the swing arm is prevented from being excessively lifted.

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, and 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 these drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a support platform of a jade carving machine of the present invention;

FIG. 2 is a schematic structural diagram of a support module of a support platform of the jade carving machine of the present invention;

FIG. 3 is a front view of an embodiment of a support module of a support platform of a jade carving machine of the present invention;

FIG. 4 is an enlarged view of A in FIG. 3;

FIG. 5 is a schematic diagram of a state of the swing arm of FIG. 3 at A with a large swing amplitude;

FIG. 6 is a schematic view of the rack and ratchet plates of the support platform of the jade carving machine of the present invention;

fig. 7 is a sectional view of a moment balancing mechanism of a support platform of a jade carving machine according to the present invention.

In the figure: 1. a support table; 2. a height adjustment module; 3. a support module; 4. a base; 5. swinging arms; 6. a fixed shaft; 7. a transmission belt; 8. pushing the pushing block; 81. fixing the ratchet; 9. a connecting plate; 10. a ratchet plate; 11. a ratchet belt; 12. a swing shaft; 13. a rack plate; 14. lifting a spring; 15. a tension spring; 16. a movable ratchet; 17. centrifuging the comb; 171. a helical rack; 18. a balancing weight; 19. a limiting screw hole; 20. a driving wheel; 21. a deflector rod; 22. a vibration spring; 23. a rotating shaft; 24. a first stopper; 25. a second limiting block; 31. a damper; 32. and a stabilizing module.

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.

In an embodiment of the support platform of the jade carving machine of the present invention, as shown in fig. 1 to 7, the support platform of the jade carving machine includes a support platform 1 and a support module 3. The supporting module 3 comprises a base 4, a fixed shaft 6, a swing arm 5, a transmission mechanism, a limiting mechanism and a moment balance mechanism. The base 4 is installed on the ground, and the fixed shaft 6 is installed in the front-rear direction and installed on the upper portion of the base 4. The upper end of swing arm 5 is around fixed axle 6 rotationally setting, specifically, is provided with the mounting hole on the swing arm 5, and swing arm 5 is in fixed axle 6 through the mounting hole suit, supporting bench 1 is installed in the upper end of swing arm 5 along the extending direction of perpendicular to swing arm 5 to support the jade engraver. The transmission mechanism comprises a swinging shaft 12, a transmission belt 7, a pushing piece and a ratchet mechanism. The swing shaft 12 is rotatably mounted on the swing arm 5 around an axis extending back and forth and is positioned below the fixed shaft 6, a connecting line between the fixed shaft 6 and the axis of the swing shaft 12 extends along the length direction of the swing rod, the upper end of the transmission belt 7 is sleeved on the fixed shaft 6, and the lower end of the transmission belt 7 is sleeved on the swing shaft 12, so that the transmission belt 7 is driven to rotate around the fixed shaft 6 and the swing shaft 12 when the swing arm 5 swings. The pushing piece is slidably arranged on the swing arm 5 along the length direction of the swing arm 5; the ratchet mechanism is configured to push the pushing member toward the extending direction of the swing arm 5 and the side away from the axis of the fixed shaft 6 when the driving belt 7 rotates, so that the pushing member pushes the swing arm 5, and the rotational friction between the swing arm 5 and the fixed shaft 6 is reduced. The limiting mechanism is configured to enable the ratchet mechanism to reciprocate within a certain range when the speed reaches a preset value in the process that the swing arm 5 swings from the outermost end to the vertical state, and further enable the ratchet mechanism to stop pushing the pushing piece. The moment balancing mechanism is configured to generate an additional moment to balance out the resisting moment generated by the belt 7, thereby ensuring the perpendicularity of the swing arm 5.

In this embodiment, a mounting groove is formed in the swing arm 5, the mounting groove extends along the length direction of the swing arm 5, the pushing member includes a lifting spring and a pushing block, the upper end of the lifting spring 14 is connected to the top wall of the mounting groove, and the inner end of the pushing block 8 extends into the mounting groove and is located below the lifting spring; the ratchet mechanism comprises a ratchet belt 11, a ratchet plate 10 and a reverse mechanism; the ratchet belt 11 is arranged on the transmission belt 7; the ratchet plate 10 is slidably mounted on the swing arm 5 along the extending direction of the swing arm 5; the reversing mechanism is used to convert the rotation of the drive belt 7 into a reverse movement of the ratchet plate 10. A plurality of fixed ratchets 81 are installed on the inner side of the pushing block 8, the fixed ratchets 81 are engaged with both the ratchet belt 11 and the ratchet plate 10, and the fixed ratchets 81, the ratchet plate 10 and the ratchet belt 11 are configured to drive the pushing block 8 to move upwards only when the ratchet belt 11 or the ratchet plate 10 moves upwards. The limiting mechanism comprises a centrifugal comb 17, a plurality of movable ratchets 16 and a tension spring 15. The centrifugal comb 17 is slidably mounted on the front side of the pushing block 8 along the extending direction of the swing arm 5, a plurality of inclined racks 171 sequentially arranged along the up-down direction are arranged at the inner end of the centrifugal comb, an inclined plane which gradually inclines outwards from top to bottom is arranged at the inner end of each inclined rack 171, and a balancing weight 18 is arranged at the lower end of each inclined rack. The movable ratchets 16 and the fixed ratchets 81 are alternately arranged, the outer ends of the movable ratchets are in sliding fit with the inclined surfaces of the helical racks 171, and the inner ends of the movable ratchets are flush with the inner side surfaces of the fixed ratchets 81. The upper end of the tension spring 15 is connected to the pushing block 8, and the lower end is connected to the centrifugal comb 17, so that when the swing arm 5 swings, the centrifugal comb 17 moves the tension spring 15 to a side far away from the fixed shaft 6 under the driving of the centrifugal force of the counterweight block 18, and pushes the movable ratchet 16 through the inclined surface of the helical rack 171, so that the movable ratchet 16 moves to a side near the ratchet plate 10 and the ratchet belt 11.

When the swing arm 5 is about to stop swinging, the centrifugal force of the balancing weight 18 is reduced and is not enough to overcome the pulling force of the tension spring 15, and finally the tension spring 15 pulls the centrifugal comb 17 to reset, the centrifugal comb 17 pulls the movable teeth to move outwards through the plurality of helical racks 171, so that the ratchet grooves formed by the two plurality of movable ratchets 16 and the plurality of fixed ratchets 81 are sparse, and meanwhile, as the moving range of the ratchet belt 11 and the ratchet plate 10 is reduced, the ratchet belt and the ratchet plate 10 can reciprocate in the sparse ratchet grooves without pushing the pushing block 8 to move upwards, so that the swing arm 5 is prevented from being excessively lifted.

In the present embodiment, the reversing mechanism includes the rack plate 13 and the pulley 20. The rack plate 13 is slidably disposed along the extending direction of the swing arm 5, and the ratchet plate 10 is mounted to the rack plate 13. The transmission wheel 20 is rotatably arranged on the swing arm 5 around an axis extending back and forth, one side of the transmission wheel is in transmission fit with the transmission belt 7, and the other side of the transmission wheel is meshed with the rack plate 13; the limiting mechanism further comprises a damper 31, one end of the damper 31 is installed on the pushing block 8, the other end of the damper is installed on the centrifugal comb 17, starting time of the limiting mechanism is delayed, and therefore the centrifugal comb 17 is prevented from being pulled to move upwards by the tension spring 15 when the swing arm 5 swings to the turning point.

In this embodiment, the drive belt 7 comprises a first vertical section and a second vertical section; the support platform is characterized in that the number of the ratchet mechanisms is four, every two ratchet mechanisms are in one group, the transmission mechanisms in each group are symmetrically arranged relative to the first vertical section or the second vertical section, the effect of enhancing the stability and the reliability of the whole support platform is achieved, specifically, the two rack plates 13 in each group are connected through the connecting plate 9, and the ratchet plates 10 are installed on the connecting plate 9.

In this embodiment, a rotation groove penetrates through the middle of the swing shaft 12 along the axial direction of the swing shaft 12, and a plurality of first stoppers 24 are uniformly distributed on the peripheral wall of the rotation groove; the torque balancing device comprises a rotating shaft 23, a second limiting block 25 and a plurality of vibrating springs 22; the rotating shaft 23 is rotatably mounted on the swing arm 5 around the axis of the rotating groove, the plurality of second limiting blocks 25 are uniformly distributed along the circumferential direction of the rotating shaft 23, and the first limiting blocks 24 and the second limiting blocks 25 are alternately arranged; a plurality of vibration springs 22 are uniformly distributed around the circumference of the rotating shaft 23, and one end of each vibration spring 22 is connected to the first stopper 24, and the other end is connected to the second stopper 25. In the swing process, because the two sides of the transmission belt 7 are blocked, resistance moment can be generated, and the final verticality of the swing arm 5 is influenced. After the swing rod is pulled to swing to the height, the rotating shaft 23 is twisted, so that the torque generated by the reciprocating rotation under the action of the vibrating spring 22 is opposite to the resistance torque generated by the transmission belt 7, the resistance torque of the transmission belt 7 is balanced, and the verticality of the swing arm 5 is ensured.

In this embodiment, a shift lever 21 is further installed at the front end of the rotating shaft 23, and the shift lever 21 is horizontally disposed in an initial state, so that the rotating shaft 23 can be rotated by shifting the shift lever 21.

In the present embodiment, the plurality of ratchet teeth on the ratchet belt 11 are spaced apart, the distance between every two adjacent ratchet teeth is the same as the height of each ratchet tooth, and the fixed ratchet teeth 81 and the movable ratchet teeth 16 have the same height as the ratchet teeth on the ratchet belt 11, and both have elasticity, so that the fixed ratchet teeth 81 and the movable ratchet teeth 16 move upward along the ratchet plate 10 and the ratchet bar.

In this embodiment, the upper end of the fixed ratchet 81 is provided with a horizontal sliding surface perpendicular to the ratchet plate 10, and the lower end of the movable ratchet 16 is slidably disposed along the horizontal sliding table to reduce the resistance of the movable ratchet 16 moving in the direction perpendicular to the ratchet plate 10.

In this embodiment, the support module 3 further includes a locking mechanism, the locking mechanism includes a limit screw hole 19 and a locking screw, and the limit screw hole 19 penetrates the surface of the fixed shaft 6 from the upper end of the swing arm 5. The locking screw is inserted into the limiting screw hole 19, the inner end of the locking screw abuts against the fixed shaft 6, and the locking screw is screwed when the swing arm 5 does not swing any more, so that the swing rod is fixed with the base 4, and the swing arm 5 is prevented from shaking in the process of mounting the supporting table.

In this embodiment, a supporting platform of jade engraver still includes height control module and stable module 32, and height control module sets up between a supporting bench 1 and swing arm 5 for adjust a supporting bench 1's height, after swing arm 5 stopped to swing and fixed with base 4, install height control module in swing arm 5 upper end, a supporting bench is installed in height control module, makes a supporting bench's height-adjustable. The stabilizing module 32 is mounted on the bottom surface to be adjusted with the height of the support module 3.

The working principle is as follows: the base 4 is supported on the inclined ground, the swing arm 5 is pulled to rise to a certain height and then released, so that the swing arm 5 swings back and forth, when the swing arm 5 swings clockwise, the swing shaft 12 rotates clockwise around the axis of the swing shaft, the transmission belt 7 rotates anticlockwise around the fixed shaft 6 and the swing shaft 12, so that the right half of the transmission belt 7 moves upwards, and the left half moves downwards; the ratchet belt 11 on the right half moves upwards to drive the pushing block 8 to move upwards relative to the ratchet plate 10, and the pushing block 8 pushes the lifting spring 14 above to compress; install in the ratchet area 11 of left half and move down, and drive rack plate 13 rebound through the drive wheel 20 of both sides, and then make ratchet plate 10 shift up, ratchet plate 10 drives and moves up for ratchet area 11 with its joggled ejector pad 8, this ejector pad 8 promotes the lifting spring 14 compression that is located its top, wherein, the degree that two lifting spring 14 compressed is the same, two lifting spring 14 make the rotation resistance that swing arm 5 and fixed axle 6 produced to the resultant force of swing arm 5 reduce, make swing arm 5 change and keep in vertical position, the same reason when swing arm anticlockwise rotation, two lifting spring continue to compress and push up the swing arm.

As shown in fig. 4, when the swing arm 5 has a large swing amplitude and a high swing speed, the centrifugal force of the weight block 18 is large, and the weight block 18 drives the centrifugal comb 17 to move downward along the corresponding pushing block 8 against the pulling force of the tension spring 15, so that the movable ratchet 16 is pushed to move inward under the action of the inclined surface of the helical rack 171, and the ratchet teeth engaged with the ratchet belt 11 are dense. As shown in fig. 5, as the swing amplitude of the swing arm 5 is reduced, the centrifugal force of the weight block is reduced, so that the gravity of the centrifugal comb 17 and the weight block 18 is not enough to overcome the tension of the tension spring 15, thereby leading the tension spring 15 to pull the centrifugal comb 17 and the counterweight block 18 to return upwards, leading the oblique rack 171 to pull back the movable ratchet 16 outwards through the inclined plane when moving upwards, leading the ratchet grooves formed by the fixed ratchet 81 and the movable ratchet 16 to be sparse, meanwhile, as the moving range of the ratchet plate 10 and the ratchet belt 11 becomes smaller, the ratchets on the ratchet plate 10 and the ratchet belt 11 are finally made to move back and forth in the sparse ratchet grooves formed by the fixed ratchets 81 and the movable ratchets 16, and the pushing block 8 can not be pushed to move upwards, so that the situation that when the swinging amplitude of the final swing arm 5 is small, the gravity acting force is small, the pushing block 8 cannot be pushed upwards, the swing arm 5 cannot swing, and the swing arm 5 is prevented from moving upwards excessively.

Pulling swing arm 5 and rising to a take the altitude, for example when pulling swing arm 5 clockwise to a take the altitude, with driving lever 21 anticlockwise rotation certain angle before unclamping swing arm 5, then release driving lever 21, driving lever 21 rotates around the axis of swinging arms clockwise, release swing arm 5 when driving lever 21 rotates to the initial position, swing arm 5 rotates around fixed axle anticlockwise, drive belt 7 rotates around fixed axle 6 and swing axle 12 clockwise, drive belt 7 receives anticlockwise resistance distance, the swing axle receives anticlockwise resistance distance, pivot 23 overcomes the elasticity of vibrating spring 22 and continues clockwise rotation that slows down this moment, store kinetic energy in vibrating spring 22, begin anticlockwise accelerating to the initial position after the speed of pivot 23 is zero. In the process, as the vibration springs 22 are all in a compressed state, the rotating shaft 23 always has a clockwise moment on the transmission belt 7; the same applies when the swing arm 5 rotates clockwise.

Treat that swing arm 5 stall pendulum is vertical back, through inserting locking screw at spacing screw 19, make swing arm 5 and 6 locking of fixed axle no longer rotate relatively, again at the fixed levelness adjusting module 2 that sets up in the upper end of swing arm 5, again with a supporting bench 1 fixed mounting in levelness adjusting module 2's top, swing arm 5 is vertical, levelness adjusting module 2's upper surface level, supporting bench 1 level promptly. Then, the stabilizing module 32 at the rest position is adjusted to be contacted with the supporting platform 1 and then is fixedly connected with the supporting platform 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. The utility model provides a supporting platform of jade engraver, includes a supporting bench, its characterized in that: the device also comprises a support module; the supporting module comprises a base, a fixed shaft, a swing arm, a transmission mechanism, a limiting mechanism and a moment balance mechanism; the fixed shaft is arranged along the front-back direction and is arranged on the base; the upper end of the swing arm is rotatably arranged on the base around the fixed shaft, and the supporting platform is arranged at the upper end of the swing arm along the extending direction vertical to the swing arm; the transmission mechanism comprises a swing shaft, a transmission belt, a pushing piece and a ratchet mechanism; the swing shaft is rotatably arranged on the swing arm around an axis extending back and forth, the upper end of the transmission belt is sleeved on the fixed shaft, and the lower end of the transmission belt is sleeved on the swing shaft so as to drive the transmission belt to rotate around the fixed shaft and the swing shaft when the swing arm swings; the pushing piece is slidably arranged on the swing arm along the length direction of the swing arm; the ratchet mechanism is configured to push the pushing piece towards the extending direction of the swing arm and away from one side of the axis of the fixed shaft when the driving belt rotates, so that the pushing piece pushes the swing arm; the limiting mechanism is configured to enable the ratchet mechanism to reciprocate within a certain range when the speed reaches a preset value in the process that the swing arm swings from the outermost end to the vertical state, and further enable the ratchet mechanism to stop pushing the pushing piece; the torque balancing mechanism is configured to generate a torque in a direction opposite to the resistive torque of the belt, thereby balancing the resistive torque of the belt.

2. The support platform of the jade carving machine as claimed in claim 1, wherein: the swing arm is internally provided with a mounting groove, the mounting groove extends along the length direction of the swing arm, and the pushing piece comprises a lifting spring and a pushing block; the upper end of the lifting spring is connected to the top wall of the mounting groove, and the inner end of the pushing block extends into the mounting groove and is positioned below the lifting spring; the ratchet mechanism comprises a ratchet belt, a ratchet plate and a reverse mechanism; the ratchet belt is arranged on the transmission belt; the ratchet plate is slidably arranged on the swing arm along the extension direction of the swing arm; the reversing mechanism is used for converting the rotation of the transmission belt into the reverse movement of the ratchet plate; the inner side of the pushing block is provided with a plurality of fixed ratchets which are meshed with the ratchet belt and the ratchet plate, and the fixed ratchets, the ratchet plate and the ratchet belt are configured to drive the pushing block to move upwards only when the ratchet belt or the ratchet plate moves upwards; the limiting mechanism comprises a centrifugal comb, a plurality of movable ratchets and a tension spring; the centrifugal comb is slidably arranged on the pushing block along the extending direction of the swing arm, a plurality of racks sequentially arranged along the up-down direction are arranged at the inner end of the centrifugal comb, an inclined plane which inclines outwards from top to bottom is arranged at the inner end of each rack, and a balancing weight is arranged at the lower end of each rack; the movable ratchets and the fixed ratchets are alternately arranged, the outer ends of the movable ratchets are in sliding fit with the inclined surfaces of the racks, and the inner ends of the movable ratchets are flush with the inner side surfaces of the fixed ratchets; the upper end of the tension spring is connected with the pushing block, and the lower end of the tension spring is connected with the centrifugal comb.

3. The support platform of the jade carving machine as claimed in claim 2, wherein: the reversing mechanism comprises a rack plate and a transmission wheel; the rack plate is slidably arranged along the extending direction of the swing arm, and the ratchet plate is mounted on the rack plate; the driving wheel is rotatably arranged on the swing arm around the axis extending forwards and backwards, one side of the driving wheel is in transmission fit with the transmission belt, and the other side of the driving wheel is meshed with the rack plate; the limiting mechanism further comprises a damper, one end of the damper is installed on the pushing block, and the other end of the damper is installed on the centrifugal comb.

4. The support platform of the jade carving machine as claimed in claim 2, wherein: the transmission belt comprises a first vertical section and a second vertical section; the number of the ratchet mechanisms is four, every two ratchet mechanisms form a group, and the transmission mechanisms of each group are symmetrically arranged relative to the first vertical section or the second vertical section.

5. The support platform of the jade carving machine as claimed in claim 1, wherein: a rotating groove penetrates through the middle part of the oscillating shaft along the axial direction of the oscillating shaft, and a plurality of first limiting blocks are uniformly distributed on the peripheral wall of the rotating groove; the torque balancing device comprises a rotating shaft, a second limiting block and a plurality of vibrating springs; the rotating shaft is rotatably arranged on the swing arm around the axis of the rotating groove, a plurality of second limiting blocks are uniformly distributed along the circumferential direction of the rotating shaft, and the first limiting blocks and the second limiting blocks are alternately arranged; a plurality of vibrating spring revolute the circumference equipartition of rotation shaft, and every vibrating spring's one end is connected in first stopper, and the other end is connected in the second stopper.

6. The support platform of the jade carving machine as claimed in claim 5, wherein: the front end of the rotating shaft is also provided with a deflector rod, and the deflector rod is horizontally arranged in an initial state.

7. The support platform of the jade carving machine as claimed in claim 2, wherein: the fixed ratchets and the movable ratchets are the same in height and the same in height as the ratchets on the ratchet belt and are elastic.

8. The support platform of the jade carving machine as claimed in claim 7, wherein: the upper end of the fixed ratchet is provided with a horizontal sliding surface which is vertical to the ratchet plate, and the lower end of the movable ratchet is arranged along the horizontal sliding table in a sliding manner.

9. The support platform of the jade carving machine as claimed in claim 1, wherein: the supporting module further comprises a locking mechanism, the locking mechanism comprises a limiting screw hole and a locking screw, and the limiting screw hole penetrates through the surface of the fixed shaft from the upper end of the swing arm; the locking screw is inserted into the limiting screw hole, and the inner end of the locking screw abuts against the fixed shaft and is used for fixing the oscillating bar and the base.

10. The support platform of the jade carving machine as claimed in claim 1, wherein: the height adjusting device further comprises a height adjusting module, wherein the height adjusting module is arranged between the supporting platform and the swing arm and used for adjusting the height of the supporting platform.

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