Box girder external mold self-walking telescopic folding integrated grinding machine with transfer trolley
Technical Field
The invention relates to the technical field of box girder outer mold polishing equipment, in particular to a box girder outer mold self-walking, telescoping and folding integrated polishing machine with a transfer trolley.
Background
In the manufacturing process of the bridge concrete precast box girder, the metal outer mold plays a vital role, and provides a stable supporting structure for concrete pouring, so that the template is ensured not to deform or move in the concrete pouring process, and the shape and the size of the precast box girder are ensured to be accurate. In the construction process of the bridge concrete precast box girder, the polishing of the surface of the metal outer mold before construction has great significance, has obvious influence on the final construction quality and the finished product effect, can remove the unevenness, the concave-convex and sharp corners of the surface of the metal outer mold, ensures the smooth and flat surface after concrete pouring, improves the quality of the finished product, has smoother surface after polishing treatment, can reduce the possibility of air holes, cracks and flaws on the surface of the concrete, and has smooth and flat surface, thereby being beneficial to reducing the friction resistance during demoulding of the concrete, reducing the difficulty of demoulding and improving the construction efficiency.
The existing box girder outer mold adopts a polisher with a moving function to polish, the polisher is driven by a transfer trolley to attach to the inner wall of the box girder outer mold, the rapid polishing of the polisher to the box girder outer mold is realized, in order to adapt to the position deviation generated in the moving process of the transfer trolley, the polisher is always attached to the box girder outer mold, an elastic telescopic piece is arranged on the polisher, the polisher can be attached to the inner wall of the box girder outer mold in a self-adaptive manner through the elastic deformation of the elastic telescopic piece, the polishing mode of the box girder outer mold is insufficient that 1, the box girder outer mold is of an inverted-shaped structure, so that a plurality of sections of polishing rollers are required to mutually cooperate to polish different inclined planes of the box girder outer mold, vibration offset is generated in the process of rotating the polishing rollers, gaps are generated in the cooperation between adjacent polishing rollers, the polishing quality of the box girder outer mold is influenced, the polishing quality of the box girder outer mold is qualified, multiple times of polishing is required, the polishing time is prolonged, the whole polishing efficiency is influenced, and the polishing roller is caused to be repeatedly bounce due to the elastic attachment on the surface of the box girder outer mold, the vibration generated in the polishing rollers rotation process causes the repeated bouncing condition of the polishing rollers, the situation of the polishing rollers is influenced on the surface of the box girder outer mold, and even the polishing roller is influenced by the fact that the polishing quality of the polishing roller is influenced when the surface of the box girder outer mold is influenced by the fact that the polishing quality is influenced by the fact that the polishing roller is large.
Disclosure of Invention
In order to solve the problems, the invention provides a box girder outer mold self-walking, telescoping and folding integrated grinding machine with a transfer trolley, which comprises the transfer trolley, two sliding rails arranged on the transfer trolley, a telescopic frame arranged on the sliding rails in a sliding manner, and a rotating frame fixedly arranged on the front face of the transfer trolley, wherein a first grinding device and a guiding device for guiding the first grinding device are arranged on the inner bending side of the telescopic frame, and a second grinding device is arranged on the lower side of the rotating frame.
The guiding device comprises a plurality of guiding mechanisms arranged on the telescopic frame, a limiting mechanism is connected to the outside of the first grinding device, and a damping mechanism is arranged on one side, close to the first grinding device, of the guiding mechanism.
The guiding mechanism comprises a guiding plate fixedly connected to the telescopic frame, a plurality of first guide rails which are symmetrically distributed are fixedly connected to one side of the guiding plate, close to the first grinding device, of the guiding plate, one side of the guiding plate, far away from the first grinding device, of the guiding plate is fixedly connected with a supporting plate, and two adjacent guiding plates are connected through a welded connecting plate.
The limiting mechanism comprises a plurality of limiting blocks connected to the outside of the first grinding device, the limiting blocks are slidably mounted in the corresponding first guide rails, adjusting components for adjusting the width of the limiting blocks are mounted in the limiting blocks, and locking components for locking the adjusting components are mounted at the bottoms of the limiting blocks.
In one possible implementation manner, the first polishing device comprises a lower inclined surface polishing mechanism, an upper cambered surface polishing mechanism and an upper inclined surface polishing mechanism, the lower inclined surface polishing mechanism, the upper cambered surface polishing mechanism and the upper inclined surface polishing mechanism are sequentially arranged on a lower inclined section, a turning section and an upper inclined section of the inner bending side of the telescopic frame, the lower inclined surface polishing mechanism, the upper cambered surface polishing mechanism and the upper inclined surface polishing mechanism all comprise elastic telescopic members fixedly connected with the telescopic frame, the bottoms of the elastic telescopic members are fixedly connected with a support, polishing rollers are rotatably arranged in the support, and a driving motor for driving the polishing rollers to rotate is fixedly arranged at one end of the support.
In one possible implementation, the guide plate has a C-shaped structure and is semi-enclosed outside the support, the C-shape including a transverse section and a longitudinal section parallel to the length direction and the width direction of the support, respectively, and the transverse section and the longitudinal section are both provided with the first guide rail.
In one possible implementation mode, the adjusting component comprises an adjusting plate which is slidably mounted in the side wall of the limiting block, the adjusting plate is symmetrically arranged in the width direction of the limiting block, one end, away from the center of the limiting block, of the adjusting plate extends to the outside of the limiting block, a plurality of balls which are distributed at equal intervals are rotatably mounted on one side, away from the limiting block, of the adjusting plate, two tension springs are fixedly connected between the adjusting plate, and a pushing component for pushing the adjusting plate to move outwards is mounted in the inner part of the limiting block.
In one possible implementation mode, the pushing component comprises a rotating shaft rotatably installed in the middle of the limiting block, a plurality of cams distributed at equal intervals are fixedly sleeved on the outer portion of the rotating shaft, and an inner hexagonal rotating head is fixedly connected to the bottom of the rotating shaft after the bottom of the rotating shaft extends to the bottom of the limiting block.
In one possible implementation mode, the locking component comprises a sliding block which is slidably mounted in the limiting block, one end, close to the inner hexagonal rotating head, of the sliding block is fixedly connected with a wedge block, a first pressure spring is fixedly connected between one side, far away from the inner hexagonal rotating head, of the sliding block and the inner wall of the limiting block, a plurality of wedge grooves are uniformly distributed in the circumferential direction of the outer portion of the inner hexagonal rotating head, and the wedge block is matched with the wedge grooves.
In one possible implementation mode, the damping mechanism comprises a damping cylinder body fixedly mounted on one side of the guide plate close to the first grinding device, a movable rod is slidably mounted on the bottom of the damping cylinder body along the height direction of the damping cylinder body, the bottom of the movable rod is fixedly connected with the top of the support, a damping plug is fixedly sleeved on the upper half of the movable rod after extending to the inside of the damping cylinder body, the damping plug is tightly attached to the inner wall of the damping cylinder body, and a damping component is arranged on the top of the movable rod.
In one possible implementation mode, the damping assembly comprises a cross shearing fork frame which is rotatably arranged on the side face of the movable rod, the cross shearing fork frame is symmetrically arranged on the length direction of the damping cylinder body, one end, far away from the movable rod, of the upper end of the cross shearing fork frame is rotatably provided with a fixed plate, one side, close to the movable rod, of the fixed plate is provided with a sliding groove, one side, far away from the movable rod, of the lower end of the cross shearing fork frame is slidably arranged in the sliding groove, one side, far away from the movable rod, of the fixed plate is fixedly connected with a damping plate, the damping plate is tightly attached to the inner wall of the damping cylinder body, and a pushing component for pushing the cross shearing fork frame to expand is arranged at the top of an inner cavity of the damping cylinder body.
In one possible implementation mode, the pushing component comprises a movable sleeve slidably mounted on the top of the movable rod, a second pressure spring is fixedly connected between the top of the movable sleeve and the top wall of the inner cavity of the damping cylinder body, and the upper end of the cross shear fork is connected with the outer wall of the movable sleeve through a pushing rod in rotary connection.
In one possible implementation manner, the second polishing device comprises a plurality of bottom polishing mechanisms which are installed at the bottom of the rotating frame in a staggered manner, the left end and the right end of the bottom of the rotating frame are symmetrically provided with lower arc polishing mechanisms, the bottom polishing mechanisms, the lower arc polishing mechanisms and the upper arc polishing mechanisms have the same structure, the length directions of the lower arc polishing mechanisms are arranged front and back, and the bottom of the rotating frame is also provided with a guiding device for guiding the bottom polishing mechanisms and the lower arc polishing mechanisms.
The grinding device has the beneficial effects that 1, the guide device is arranged to guide the first grinding device, the first guide rail on the inner side of the C-shaped guide plate can limit the first guide rail in the front-back direction and the left-right direction, so that the first guide rail can only move in the direction vertical to the grinding surface and cannot move in other directions, the damping mechanism can play a damping role, the grinding stability of the grinding roller is improved, meanwhile, the adjacent guide plates are connected through the connecting plates, the acting forces of the guide plates which are distributed transversely and longitudinally can offset each other, the fixing firmness of the guide plates is improved, the grinding stability is further improved, the grinding quality of the outer die of the box girder is prevented from being influenced by vibration deviation, and the grinding efficiency is improved.
2. According to the invention, through the cooperation of the adjusting component and the locking component, the rotating inner hexagonal rotating head drives the rotating shaft and the cam to rotate, so that the cam can push the adjusting plate to move towards the outside of the limiting block, the distance between the limiting mechanism and the first guide rail can be reduced, the balls can be tightly attached to the inner wall of the first guide rail, the movable stability of the limiting mechanism in the first guide rail is improved, the polishing stability of the polishing roller is further improved, and the polishing quality is further improved.
3. According to the invention, the damping mechanism is arranged, when the first grinding device vibrates in the grinding process, the movable rod reciprocates in the damping cylinder body under the action of the vibration of the first grinding device, the damping plug, the damping plate and the damping cylinder body are utilized for damping, the influence of the vibration is reduced, the second pressure spring can be compressed for buffering when the movable rod moves, meanwhile, the second pressure spring can push the movable sleeve to move reversely along with the increase of the elastic force of the second pressure spring, so that the cross shear fork frame expands outwards, the pressure between the damping plate and the damping cylinder body is increased, the damping resistance between the damping plate and the damping cylinder body is increased, the larger the vibration amplitude of the vibration is, the larger vibration of the first grinding device is restrained, and the damping effect is further improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the telescopic frame of the present invention.
Fig. 3 is a schematic perspective view of the guide device of the present invention.
Fig. 4 is a bottom view of the guide device of the present invention.
Fig. 5 is a schematic perspective view of a limiting mechanism according to the present invention.
Fig. 6 is a partially cut-away perspective view of the spacing mechanism of the present invention.
Fig. 7 is a schematic plan view of the cam of the present invention.
Fig. 8 is a schematic view of the lock assembly of the present invention in a bottom plan configuration.
Fig. 9 is a partially cut-away schematic perspective view of a shock absorbing mechanism of the present invention.
In the drawing, 1, a transfer trolley, 11, a sliding rail, 2, a telescopic frame, 3, a first grinding device, 31, a lower inclined surface grinding mechanism, 32, an upper cambered surface grinding mechanism, 33, an upper inclined surface grinding mechanism, 331, an elastic telescopic member, 332, a bracket, 333, a grinding roller, 334, a driving motor, 4, a rotating frame, 5, a second grinding device, 51, a bottom surface grinding mechanism, 52, a lower cambered surface grinding mechanism, 6, a guiding device, 61, a guiding mechanism, 611, a guiding plate, 612, a first guide rail, 613, a supporting plate, 62, a limiting mechanism, 621, a limiting block, 622, an adjusting component, 6221, an adjusting plate, 6222, a ball, 6223, a tension spring, 6224, a rotating shaft, 6225, a cam, 6226, an inner hexagonal rotating head, 623, a locking component, 6231, a sliding block, 6232, a wedge block, 6233, a first compression spring, 6234, a wedge groove, 63, a connecting plate, 64, a damping mechanism, 641, a damping cylinder, a movable rod, 646464643, a damping plug 644, a damping component, 6441, a cross fork 6442, a damping sleeve, a 6446, a second compression spring, a sliding chute 6446, a fixed compression spring, and a damping sleeve.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described below and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
Please refer to fig. 1, a box girder outer mold self-walking flexible folding integrated polisher with a transfer trolley comprises a transfer trolley 1, a slide rail 11 installed on the transfer trolley 1, a telescopic frame 2 slidably installed on the slide rail 11, a rotating frame 4 fixedly installed on the front surface of the transfer trolley 1, a power source for driving the telescopic frame 2 to slide inside the slide rail 11 is also installed at the bottom of the telescopic frame 2, such as a motor and a hydraulic telescopic cylinder, a first grinding device 3 and a guiding device 6 for guiding the first grinding device 3 are installed on the inner bending side of the telescopic frame 2, and a second grinding device 5 is installed on the lower side of the rotating frame 4.
Referring to fig. 1 to 4, the guiding device 6 includes a plurality of guiding mechanisms 61 mounted on the telescopic frame 2, a limiting mechanism 62 is connected to the outside of the first grinding device 3, and a damping mechanism 64 is mounted on a side of the guiding mechanism 61 close to the first grinding device 3.
Referring to fig. 1, 3 and 4, the guiding mechanism 61 includes a guiding plate 611 fixedly connected to the expansion bracket 2, a plurality of first guide rails 612 distributed symmetrically and left are fixedly connected to one side of the guiding plate 611 close to the first grinding device 3, one side of the guiding plate 611 far away from the first grinding device 3 is fixedly connected to a supporting plate 613, and two adjacent guiding plates 611 are connected through a welded connecting plate 63.
Referring to fig. 1, 3, 4 and 5, the limiting mechanism 62 includes a plurality of limiting blocks 621 connected to the outside of the first grinding device 3, the limiting blocks 621 are slidably mounted in the corresponding first guide rails 612, an adjusting component 622 for adjusting the width of the limiting blocks 621 is mounted in the limiting blocks 621, and a locking component 623 for locking the adjusting component 622 is mounted at the bottom of the limiting blocks 621.
Referring to fig. 1 to 4, the first polishing device 3 includes a lower bevel polishing mechanism 31, an upper arc polishing mechanism 32 and an upper bevel polishing mechanism 33, the lower bevel polishing mechanism 31, the upper arc polishing mechanism 32 and the upper bevel polishing mechanism 33 are sequentially installed on a lower bevel section, a turning section and an upper bevel section on the inner curved side of the expansion bracket 2, the lower bevel polishing mechanism 31, the upper arc polishing mechanism 32 and the upper bevel polishing mechanism 33 all include an elastic telescopic piece 331 fixedly connected with the expansion bracket 2, a bracket 332 is fixedly connected with the bottom of the elastic telescopic piece 331, a polishing roller 333 is installed in the bracket 332 in a rotating manner, and a driving motor 334 for driving the polishing roller 333 to rotate is fixedly installed at one end of the bracket 332.
In actual use, the lower inclined plane polishing mechanism 31, the upper cambered surface polishing mechanism 32 and the upper inclined plane polishing mechanism 33 are respectively attached to the lower inclined plane, the circular arc surface and the upper inclined plane of the outer die of the box girder, wherein the upper cambered surface polishing mechanism 32 adopts a curved surface polishing roller 333 which is adaptive to the circular arc surface, the lower inclined plane polishing mechanism 31, the upper cambered surface polishing mechanism 32 and the upper inclined plane polishing mechanism 33 with corresponding lengths can be selected according to the widths of different surfaces, and a plurality of lower inclined plane polishing mechanisms 31 or upper inclined plane polishing mechanisms 33 can also polish the surface with larger width in a staggered and head-to-tail aligned mode.
Referring to fig. 1, 3 and 4, the guide plate 611 has a C-shaped structure and is semi-enclosed outside the bracket 332, and the C-shape includes a transverse section and a longitudinal section parallel to the length direction and the width direction of the bracket 332, respectively, and the transverse section and the longitudinal section are provided with a first guide rail 612.
Through setting up the guide board 611 of C font structure, can carry out spacing guide to the length direction and the width direction of support 332 respectively, prevent that support 332 from appearing along length direction or width direction's vibrations skew, improve the stability of polishing roller 333.
Referring to fig. 1, 3, 5, 6 and 7, the adjusting assembly 622 includes an adjusting plate 6221 slidably mounted in a sidewall of the stopper 621, the adjusting plate 6221 is symmetrically disposed in a width direction of the stopper 621, one end of the adjusting plate 6221 away from a center of the stopper 621 extends to an outside of the stopper 621, a plurality of equally spaced balls 6222 are rotatably mounted on one side of the adjusting plate 6221 away from the stopper 621, a tension spring 6223 is fixedly connected between the two adjusting plates 6221, and a pushing member for pushing the adjusting plate 6221 to move outwards is mounted inside the stopper 621.
Referring to fig. 5,6 and 7, the pushing component includes a rotating shaft 6224 rotatably mounted in the middle of the limiting block 621, a plurality of equally distributed cams 6225 are fixedly sleeved on the outer portion of the rotating shaft 6224, and an inner hexagonal rotating head 6226 is fixedly connected after the bottom of the rotating shaft 6224 extends to the bottom of the limiting block 621.
The rotating shaft 6224 and the cam 6225 can be driven to rotate by rotating the inner hexagonal rotating head 6226, the cam 6225 is utilized to push the adjusting plate 6221 to move towards the outer part of the limiting block 621, the ball 6222 can be tightly attached to the inner wall of the first guide rail 612, the stability of the up-and-down movement of the limiting mechanism 62 in the first guide rail 612 can be improved by reducing the distance between the limiting mechanism 62 and the first guide rail 612, and the limiting mechanism 62 is prevented from shaking back and forth and left and right in the first guide rail 612.
Referring to fig. 5 and 8, the locking component 623 includes a sliding block 6231 slidably mounted in the stopper 621, one end of the sliding block 6231 close to the inner hexagonal rotating head 6226 is fixedly connected with a wedge-shaped block 6232, a first compression spring 6233 is fixedly connected between one side of the sliding block 6231 far away from the inner hexagonal rotating head 6226 and the inner wall of the stopper 621, a plurality of wedge-shaped grooves 6234 are uniformly distributed on the outer circumference of the inner hexagonal rotating head 6226, and the wedge-shaped block 6232 is matched with the wedge-shaped grooves 6234.
When the inner hexagonal rotating head 6226 rotates anticlockwise (based on the view angle of fig. 7), the wedge-shaped block 6232 is clamped into the wedge-shaped groove 6234 to limit, when the inner hexagonal rotating head 6226 rotates anticlockwise, the wedge-shaped block 6232 does not influence the normal rotation of the inner hexagonal rotating head 6226, so that the cam 6225 can push the adjusting plate 6221 outwards, when the inner hexagonal rotating head 6226 rotates clockwise, the wedge-shaped block 6232 can clamp the wedge-shaped groove 6234, the inner hexagonal rotating head 6226 is prevented from rotating, the cam 6225 is prevented from loosening pushing the adjusting plate 6221, the fact that the adjusting plate 6221 is tightly attached to the first guide rail 612 is ensured, and the fact that the maximum distance of the outward movement of the adjusting plate 6221 is smaller than the distance between the salient point and the base circle in the cam 6225 is required, that is avoided when the cam 6225 pushes the adjusting plate 6225 to move outwards to the maximum distance, the cam 6225 cannot rotate continuously, and the condition that the cam rotation angle is too large to loosen pushing the adjusting plate 6221 is avoided. When it is desired to reset the adjustment plate 6221, the slider 6231 is pulled in a direction away from the inner hexagonal head 6226 such that the wedge 6232 is displaced from the wedge slot 6234.
Referring to fig. 1, 3 and 9, the damping mechanism 64 includes a damping cylinder 641 fixedly mounted on a side of the guide plate 611 near the first grinding device 3, a movable rod 642 is slidably mounted on the bottom of the damping cylinder 641 along the height direction thereof, the bottom of the movable rod 642 is fixedly connected with the top of the bracket 332, the upper half of the movable rod 642 extends into the damping cylinder 641 and is fixedly sleeved with a damping plug 643, the damping plug 643 is tightly attached to the inner wall of the damping cylinder 641, and a damping assembly 644 is arranged on the top of the movable rod 642.
When the bracket 332 vibrates, the bracket 332 drives the movable rod 642 to move inside the shock absorbing cylinder 641, and the shock is absorbed by the resistance between the damping plug 643 and the shock absorbing cylinder 641, so as to reduce the influence of the vibration.
Referring to fig. 1, 3 and 9, the vibration absorbing assembly 644 includes a cross-shaped fork 6441 rotatably mounted on a side of a movable rod 642, the cross-shaped fork 6441 is symmetrically disposed in a length direction of a vibration absorbing cylinder 641, a fixing plate 6444 is rotatably mounted at an end of the upper end of the cross-shaped fork 6441, which is far away from the movable rod 642, a sliding groove 6445 is formed in a side of the fixing plate 6444, which is near the movable rod 642, a side of the lower end of the cross-shaped fork 6441, which is far away from the movable rod 642, is slidably mounted in the sliding groove 6445, a damping plate 6446 is fixedly connected to a side of the fixing plate 6444, which is far away from the movable rod 642, the damping plate 6446 is tightly attached to an inner wall of the vibration absorbing cylinder 641, and a pushing component for pushing the cross-shaped fork 6441 to expand is mounted at the top of an inner cavity of the vibration absorbing cylinder 641.
Referring to fig. 1, 3 and 9, the pushing component includes a movable sleeve 6442 slidably mounted on the top of the movable rod 642, a second compression spring 6443 is fixedly connected between the top of the movable sleeve 6442 and the top wall of the inner cavity of the shock absorbing cylinder 641, and the upper end of the cross-shaped scissor 6441 is connected with the outer wall of the movable sleeve 6442 through a pushing rod 6447 in rotational connection.
Referring to fig. 1, the second polishing device 5 includes a plurality of bottom polishing mechanisms 51 installed at the bottom of the rotating frame 4 in a staggered manner, lower arc polishing mechanisms 52 are symmetrically installed at the left and right ends of the bottom of the rotating frame 4, the bottom polishing mechanisms 51, the lower arc polishing mechanisms 52 and the upper arc polishing mechanisms 33 have the same structure, the length direction of the lower arc polishing mechanisms 52 is set up front and back, in order to adapt to the lower arc of the box girder, the lower arc polishing mechanisms 52 adopt polishing rollers 333 with large diameter and small length, and a guiding device 6 for guiding the bottom polishing mechanisms 51 and the lower arc polishing mechanisms 52 is also installed at the bottom of the rotating frame 4.
When the movable rod 642 moves upward, the movable sleeve 6442 approaches the cross-shaped scissor frame 6441, so that the cross-shaped scissor frame 6441 expands outwards, the pressure between the damping plate 6446 and the damping cylinder 641 is increased, the damping resistance between the damping plate 6446 and the damping cylinder 641 is further increased, the larger the vibration amplitude is, the larger the damping resistance is generated, and the large vibration of the first grinding device 3 is restrained.
Referring to fig. 1-9, in a specific use, step one, the inner hexagonal rotating head 6226 is rotated clockwise to drive the rotating shaft 6224 and the cam 6225 to rotate, the cam 6225 is used to push the adjusting plate 6221 to move away from the limiting block 621, so that the balls 6222 are tightly attached to the inside of the first guide rail 612, the stability of the limiting mechanism 62 moving in the first guide rail 612 is improved, the guide plate 611 is used to limit the support 332, and the support 332 is prevented from vibrating and shifting along the length and width directions.
Step two, the telescopic frame 2 is driven to move to the left side and the right side of the transfer trolley 1 through a power source, so that the lower inclined plane polishing mechanism 31, the upper cambered surface polishing mechanism 32, the upper inclined plane polishing mechanism 33, the bottom surface polishing mechanism 51 and the lower cambered surface polishing mechanism 52 are attached to the surface of the box girder outer die, the driving motor 334 drives the polishing roller 333 to rotate, and then the transfer trolley 1 drives the telescopic frame 2 and the rotating frame 4 to move along the box girder outer die for polishing.
Step three, when the bracket 332 vibrates during the working process of the grinding roller 333, the movable rod 642 reciprocates in the shock absorbing cylinder 641 under the vibration action of the first grinding device 3, the shock is absorbed by the resistance between the damping plug 643 and the shock absorbing cylinder 641, and when the movable rod 642 moves upwards, the second pressure spring 6443 can push the movable sleeve 6442 to move downwards, so that the cross shearing fork 6441 expands outwards, the pressure between the damping plate 6446 and the shock absorbing cylinder 641 is increased, the shock absorbing resistance between the damping plate 6446 and the shock absorbing cylinder 641 is increased, and the influence of the vibration is further reduced.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, slidably connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not limited in scope by the present invention, so that all equivalent changes according to the structure, shape and principle of the present invention are covered by the scope of the present invention.