Disclosure of Invention
The invention aims to provide an inner hole coaxial expansion tool for solving the technical problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a coaxial expansion frock of hole, includes parallel arrangement's lower disc and last disc, the equiangular rigid coupling has four groups connecting rods between lower disc and the last disc, a side rotation that lower disc is close to the last disc is connected with ball screw, and ball screw keeps away from the one end of lower disc and pass through the disc inner chamber, ball screw outer wall spiro union has the slider subassembly, the equal angular sliding of slider subassembly outer wall has the support arm subassembly, support arm subassembly both ends respectively with lower disc and last disc sliding connection, and the support arm subassembly is configured to withdraw or expand along with the slip of slider subassembly.
Further, the support arm assembly is provided with four groups, and the four groups of support arm assemblies and the four groups of connecting rods are arranged in a staggered mode.
Further, the slider subassembly includes the slider, and slider and ball screw looks spiro union, a plurality of groups spouts have been seted up to slider lateral wall equiangular degree, spout both ends are respectively towards lower disc and last disc, and the spout bottom is provided with the angle of slope, and the incline direction is by the sunken slope of last disc direction downwards, slider outer wall equiangular degree rigid coupling has a plurality of groups fixed block, fixed block and spout one-to-one setting, and every group fixed block is located every group spout homonymy edge respectively, and every group the one end rigid coupling that the slider was kept away from to the fixed block has the dog, and the dog is located the spout top, the dog bottom is provided with the angle of slope, dog inclination is unanimous with spout inclination size, and the incline direction of dog is opposite with the incline direction of spout.
Further, the support arm assembly comprises a connecting plate, one side of the connecting plate is embedded into the sliding groove and is in sliding connection with the sliding block, the connecting plate is located between the lower disc and the upper disc and is respectively in sliding connection with the lower disc and the upper disc, the opposite side of one side of the connecting plate is fixedly connected with a support arm, the support arm is located on the outer side of the lower disc and the outer side of the upper disc, a strip-shaped groove matched with the stop block is formed in the surface of the connecting plate, and two ends of the strip-shaped groove face the lower disc and the upper disc respectively.
Further, limiting blocks are fixedly connected to two side walls, close to the lower disc and the upper disc, of the connecting plate, and limiting grooves matched with the limiting blocks are formed in the lower disc and the upper disc.
Further, a side wall of the connecting plate embedded into the chute is provided with an inclination angle matched with the bottom of the chute, and the strip-shaped chute is provided with an inclination angle matched with the stop block.
Further, ball bearings are arranged in the centers of the side faces of the lower disc and the upper disc, which are close to each other, and the ball screw is respectively connected with the lower disc and the upper disc in a rotating way through the ball bearings.
Further, one end of the ball screw penetrating through the upper disc is connected with a rotating handle through a coupler.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the upper disc, the lower disc, the connecting rod, the ball screw, the sliding block assembly and the supporting arm assembly are arranged, so that the tool can be inserted into the workpieces and arranged at the junction of the two groups of workpieces when the two groups of workpieces are welded and installed, and then the sliding block assembly is driven to slide up and down by rotating the ball screw, so that the supporting arm assembly is driven to retract and expand in a reciprocating manner, and the junction of the inner walls of the workpieces is supported and positioned by the supporting arm assembly, so that the coaxiality between the two groups of workpieces is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments 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 that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the structure of the present invention;
FIG. 3 is a schematic view of the connection structure of the upper and lower disks of the present invention;
FIG. 4 is a schematic view of a slider assembly according to the present invention;
FIG. 5 is a cross-sectional view of a slider assembly of the present invention;
FIG. 6 is a schematic view of a support arm assembly according to the present invention;
FIG. 7 is a schematic elevational view of a support arm assembly of the present invention;
FIG. 8 is a schematic diagram of a connection structure of a slider assembly and a support arm assembly according to the present invention;
fig. 9 is a schematic diagram of another embodiment of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. A lower disc; 2. an upper disc; 3. a connecting rod; 4. a ball screw; 5. a slider assembly; 51. a slide block; 52. a chute; 53. a fixed block; 54. a stop block; 6. a support arm assembly; 61. a connecting plate; 62. a support arm; 63. a bar-shaped groove; 64. a limiting block; 7. a limit groove; 8. a ball bearing; 9. the handle is turned.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: the utility model particularly relates to a coaxial expansion frock of hole, including parallel arrangement's lower disc 1 and last disc 2, the equiangular rigid coupling has four groups connecting rod 3 between lower disc 1 and the last disc 2, a side rotation that lower disc 1 is close to last disc 2 is connected with ball screw 4, and ball screw 4 keeps away from the one end of lower disc 1 and runs through the inner chamber of last disc 2, ball screw 4 outer wall spiro union has slider subassembly 5, slider subassembly 5 outer wall equiangular sliding connection has support arm assembly 6, support arm assembly 6 both ends respectively with lower disc 1 and last disc 2 sliding connection, and support arm assembly 6 is configured to withdraw or expand along with the slip of slider subassembly 5.
Specifically, the support arm assemblies 6 are provided with four groups, and the four groups of support arm assemblies 6 and the four groups of connecting rods 3 are arranged in a staggered manner.
Specifically, the slider assembly 5 includes a slider 51, and the slider 51 is screwed with the ball screw 4, a plurality of groups of sliding grooves 52 are provided at equal angles on the side wall of the slider 51, two ends of the sliding groove 52 face the lower disc 1 and the upper disc 2 respectively, an inclined angle is provided at the bottom of the sliding groove 52, the inclined direction is concave inclined from the upper disc 2 to the lower disc 1, a plurality of groups of fixing blocks 53 are fixedly connected at equal angles on the outer wall of the slider 51, the fixing blocks 53 are arranged in one-to-one correspondence with the sliding grooves 52, each group of fixing blocks 53 are respectively located at the same side edge of each group of sliding grooves 52, a stop block 54 is fixedly connected at one end of each group of fixing blocks 53 far away from the slider 51, the stop block 54 is located above the sliding groove 52, an inclined angle is provided at the bottom of the stop block 54, the inclined angle of the stop block 54 is consistent with the inclined angle of the sliding groove 52, and the inclined direction of the stop block 54 is opposite to the inclined direction of the sliding groove 52.
Specifically, the support arm assembly 6 includes a connection plate 61, one side of the connection plate 61 is embedded in the chute 52 and is slidably connected with the slider 51, the connection plate 61 is located between the lower disc 1 and the upper disc 2 and is slidably connected with the lower disc 1 and the upper disc 2 respectively, the other side opposite to the one side of the connection plate 61 is fixedly connected with a support arm 62, the support arm 62 is located outside the lower disc 1 and the upper disc 2, a strip-shaped groove 63 matched with the stop block 54 is formed in the surface of the connection plate 61, and two ends of the strip-shaped groove 63 face the lower disc 1 and the upper disc 2 respectively.
Specifically, two side walls of the connecting plate 61, which are close to the lower disc 1 and the upper disc 2, are fixedly connected with limiting blocks 64, and limiting grooves 7 which are matched with the limiting blocks 64 are formed in the lower disc 1 and the upper disc 2.
Specifically, a side wall of the connecting plate 61 embedded in the chute 52 is provided with an inclination angle which is matched with the bottom of the chute 52, and the bar-shaped groove 63 is provided with an inclination angle which is matched with the stopper 54.
Specifically, ball bearings 8 are disposed at the centers of the side surfaces of the lower disc 1 and the upper disc 2, which are close to each other, and the ball screw 4 is respectively connected with the lower disc 1 and the upper disc 2 in a rotating manner through the ball bearings 8.
Specifically, ball screw 4 runs through the one end of disc 2 and is connected with rotation handle 9 through the shaft coupling, makes this frock through the setting of rotation handle can carry out coaxial location to the pipeline of different length to improve the application range of frock.
One specific application embodiment of this embodiment is:
During assembly, one end of a ball screw 4 is inserted into a ball bearing 8 of a lower disc 1, one ends of four groups of connecting rods 3 are fixedly connected with the lower disc 1 through bolts, a sliding block 51 is sleeved on the outer wall of the ball screw 4, a fixed block 53 is fixedly connected on the sliding block 51 through bolts, one side of a connecting plate 61 is embedded into a sliding groove 52 of the sliding block 51, a stop block 54 is abutted to the inside of a strip-shaped groove 63 to form a clamping structure, a limiting block 64 on the connecting plate 61 is inserted into a limiting groove 7 of the lower disc 1, and a supporting arm 62 and the connecting plate 61 are installed and fixed through bolts, so that the installation of a supporting arm assembly 6 is completed; finally, fixing the upper disc 2 and the four groups of connecting rods 3 through bolts, enabling one end of the ball screw 4 to pass through the ball bearing 8 of the upper disc 2, simultaneously enabling the other group of limiting blocks 64 on the connecting plate 61 to be inserted into the limiting grooves 7 of the upper disc 2, and then connecting the rotating handle 9 with the ball screw 4 through a coupler according to requirements to complete the installation of the positioning tool;
in use, take the installation of two sets of pipes as an example:
Inserting one end of the tool into two groups of pipelines to be positioned, positioning a supporting arm 62 at the junction of the two groups of pipelines, then rotating a rotating handle 9, driving a ball screw 4 to rotate by the rotating handle 9, driving a sliding block assembly 5 to slide along the ball screw 4 in the direction of a lower disc 1, and setting a concave inclination angle of the lower disc 1 in a chute 52, so that the sliding block assembly 5 can push a connecting plate 61 and the supporting arm 62 to expand outwards in the sliding process, the supporting arm 62 is abutted against the inner wall of the junction of the two groups of pipelines, and then adjusting the coaxiality of the two groups of pipelines, and welding; after the welding is finished, the rotating handle 9 is reversely rotated, so that the sliding block assembly 5 slides along the ball screw 4 towards the upper disc 2, and the stop block 54 is clamped on the strip-shaped groove 63 of the connecting plate 61, so that the sliding block assembly 5 can drive the supporting arm assembly 6 to retract, and the tool is taken out after the sliding block assembly is separated from the inner wall of the pipeline.
In the description of the present invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.