CN212469435U

CN212469435U - Expansion device for jack shell mounting hole

Info

Publication number: CN212469435U
Application number: CN202020961497.4U
Authority: CN
Inventors: 张明明; 蔡燕祥
Original assignee: Jiaxing Datong Machinery Co ltd
Current assignee: Jiaxing Datong Machinery Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-02-05
Anticipated expiration: 2030-05-29

Abstract

The utility model discloses an expanding device for a jack shell mounting hole, which comprises a jack shell, a die unit and a pressing unit, wherein the die unit comprises a moving block, a fixed block and an elastic mechanism arranged between the moving block and the fixed block, the bottom surface of the moving block is detachably connected with a pressing block, the pressing block comprises a flat part and an arc part, the bottom surface of the arc part is in an arc shape matched with the outer wall of the jack shell, the bottom surface of the flat part is flat, the central position of the fixed block is detachably connected with a square bulge, the front side surface of the square bulge is provided with an ellipsoid-like body, the long edge of the ellipsoid-like body is in a horizontal state, the middle position above the ellipsoid-like body is provided with a ball groove, the bottom of the ball groove is provided with a spring groove, a first spring is arranged in the spring groove, the pressing unit comprises a frame and a hydraulic, the hydraulic cylinder is also provided with a stabilizing unit.

Description

Expansion device for jack shell mounting hole

Technical Field

The utility model relates to a jack field, in particular to expansion device of jack housing installation hole.

Background

The jack is formed by the equipment of multiple part, including jack casing, a pedestal, the case, the sealing washer, fastener etc, be equipped with two mounting holes on the casing of jack, be used for connecting with the base of jack etc. need wear out the bolt from the inside of jack casing, the bolt cap part of bolt is inside the jack casing like this, there is certain bulge, can influence the installation of other parts like this, the sealing washer is equipped with in the outside of case especially, the laminating of the inner wall of sealing washer and jack casing, the bolt cap that exposes like this produces the influence to the sealing washer.

For this reason, need carry out reaming operation with two mounting holes on the jack casing, this step is accomplished by manual work at present, and is not efficient dense and relatively laborious.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an expansion device of jack housing installation hole has raises the efficiency, uses manpower sparingly advantage such as.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the expansion device for the mounting holes of the jack shell comprises the jack shell, wherein the jack shell is provided with two mounting holes, and the expansion device is characterized by comprising a die unit and a pressing unit, wherein the die unit comprises a moving block, a fixed block and an elastic mechanism arranged between the moving block and the fixed block, the bottom surface of the moving block is detachably connected with a pressing block, the pressing block comprises a flat part and an arc part, the bottom surface of the arc part is in an arc shape matched with the outer wall of the jack shell, the bottom surface of the flat part is flat, the central position of the fixed block is detachably connected with a square bulge, the front side surface of the square bulge is provided with an ellipse-like body, the long edge of the ellipse-like body is in a horizontal state, a ball groove is arranged in the middle position above the ellipse-like body, a spring groove is arranged at the bottom of the ball groove, a first spring is arranged in the spring groove, the middle position of the frame is provided with a platform, the platform is provided with a groove matched with the fixing block, and the hydraulic cylinder is further provided with a stabilizing unit.

Adopt above-mentioned technical scheme, fix the jack casing on the class ellipsoid of fixed block to with the mounting hole and the spheroid cooperation of jack casing, then push down the unit and push down the jack casing, carry out the reaming, then carry out same operation at another mounting hole to the jack casing.

As preferred, the stabilizing unit includes connecting block, two spacing strips, the telescopic link fixed connection of connecting block and pneumatic cylinder, the connecting block both sides are equipped with the limiting plate, establish respectively in the left and right sides of frame for two spacing strips, and be equipped with the bar that supplies the limiting plate to pass on the spacing strip and lead to the groove.

By adopting the technical scheme, the telescopic rod of the hydraulic cylinder is more stable.

Preferably, the elastic mechanism comprises a second spring and an inner hexagon bolt, cylindrical protrusions are arranged at two ends of the fixed block, threaded holes matched with the inner hexagon bolt are formed in the cylindrical protrusions, a step through hole comprising an upper portion and a lower portion is formed in the position, corresponding to the threaded hole, of the moving block, the diameter of the upper portion of the step through hole is larger, the diameter of the lower portion of the step through hole is smaller, the lower portion of the step through hole is matched with the cylindrical protrusions, the second spring is sleeved on the cylindrical protrusions, and the second spring is located between the moving block and the fixed block.

By adopting the technical scheme, the elastic unit enables a certain buffer to be arranged between the telescopic rod and the moving block of the hydraulic cylinder, and the elastic unit enables the moving block to reset after the telescopic rod rises.

Preferably, the distance from the center of the ball to the front side face of the square bulge is the same as the distance from the center of the mounting hole to the rear side face of the jack shell.

Adopt above-mentioned technical scheme, the rear side conflict square bulge of jack casing like this helps mounting hole and spheroid location.

Preferably, the middle parts of the upper edge and the lower edge of the ellipsoid are in a circular arc shape matched with the inner wall of the jack shell.

By adopting the technical scheme, the inner wall of the jack shell is convenient to be attached to the ellipsoid, and the jack shell is more stable in the reaming process.

Preferably, after the sphere is abutted downwards to the spherical groove and limited, the distance from the top of the sphere to the midpoint of the lower edge of the ellipsoid-like body is equal to the inner diameter of the jack shell.

Adopt above-mentioned technical scheme, insert the jack casing like this after the ellipsoid, the jack casing is spacing, but can also rotate, rotates the jack casing, and the spheroid pops out and the mounting hole cooperation back, and the jack casing is spacing completely, can begin the reaming.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural view of a mold unit according to an embodiment;

FIG. 3 is a bottom view of a moving block of an embodiment;

FIG. 4 is a schematic view of an embodiment ellipsoid;

FIG. 5 is an enlarged view of the embodiment A.

Reference numerals: 1. a mold unit; 11. a moving block; 12. a fixed block; 13. an elastic mechanism; 131. a second spring; 132. a cylindrical bulge; 133. a stepped bore; 14. pressing the block; 141. flattening the part; 142. an arcuate portion; 15. a square bulge; 16. an ellipsoid-like body; 17. a ball groove; 171. a sphere; 18. a spring slot; 19. a spring; 2. a pressing unit; 21. a frame; 22. a hydraulic cylinder; 23. a platform; 231. a groove; 3. a stabilizing unit; 31. connecting blocks; 32. a limiting strip; 33. a limiting plate; 331. a strip-shaped groove.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

As shown in fig. 1 to 5, the jack shell is provided with two mounting holes, bolts are inserted into the two mounting holes, the other ends of the bolts penetrate out of the jack shell, the penetrating parts of the bolts are in threaded connection with jack seats, the cover of the bolts is located in the jack shell, the inner core is further installed on the jack shell, a sealing ring for guaranteeing sealing performance is arranged on the inner core, the sealing ring is attached to the inner wall of the jack shell, and therefore in the process of assembling the inner core and the jack shell, the sealing ring can be in contact with the cover of the bolts to generate friction.

An expansion device for a mounting hole of a jack shell comprises the jack shell, and further comprises a die unit 1 and a pressing unit 2, wherein the pressing unit 2 comprises a frame 21 and a hydraulic cylinder 22, the frame 21 is a square frame, the hydraulic cylinder 22 is fixedly connected with the top of the frame 21, a platform 23 for placing the die unit 1 is arranged in the middle of the frame 21, a stabilizing unit 3 is further arranged on the hydraulic cylinder 22, the stabilizing unit 3 comprises a connecting block 31 and two limiting strips 32, the connecting block 31 is fixedly connected with an expansion rod of the hydraulic cylinder 22, limiting plates 33 are further arranged on the left side and the right side of the connecting block 31, the two limiting strips 32 are respectively fixedly connected with the left side and the right side of the frame 21, and strip-shaped through grooves for the limiting plates 33 to pass through are further arranged, therefore, the limiting strips 32 are matched with the limiting plates 33, so that the telescopic rods of the hydraulic cylinders 22 can only move up and down, and the rotation of the telescopic rods in the process of pressing the die down is avoided.

The die unit 1 comprises a moving block 11, a fixed block 12 and an elastic mechanism 13 arranged between the moving block 11 and the fixed block 12, the bottom surface of the moving block 11 is detachably connected with a lower pressing block 14, the lower pressing block 14 comprises a flat part 141 and an arc part 142, the arc part 142 is positioned at the front side of the flat part 141, the bottom surface of the flat part 141 is flat, the bottom surface of the arc part 142 is arc-shaped and matched with the outer wall of a jack shell, the bottom surface of the flat part 141 is higher than the middle position of the arc edge on the arc part 142, the central position of the fixed block 12 is detachably connected with a square bulge 15 (the lower pressing block 14 and the square bulge 15 are detachably connected, on one hand, maintenance is convenient, on the other hand, different lower pressing blocks 14 and square bulges 15 can be replaced to adapt to different jack shells), the front side surface of the square bulge 15 is provided with an ellipse, the long edge of the similar ellipsoid 16 is in a horizontal state, a ball groove 17 is formed in the middle of the edge above the similar ellipsoid 16, a spring groove 18 is formed in the bottom of the ball groove 17, a first spring 19 is placed in the spring groove 18, a ball 171 is placed in the ball groove 17, the first spring 19 exerts upward acting force on the ball 171, and therefore in a natural state, a certain distance exists between the bottom of the ball 171 and the ball groove 17, and the ball 171 is limited after being abutted downwards to the ball groove 17.

Elastic mechanism 13 includes spring two 131, the hexagon socket head cap screw, fixed block 12 both ends are equipped with cylinder arch 132, cylinder arch 132 is equipped with the screw hole with hexagon socket head cap screw complex, the position that movable block 11 corresponds the screw hole is equipped with the step through-hole including upper and lower two parts, the upper portion diameter of step through-hole is great, and lower part diameter is less, the lower part of step through-hole cooperates with cylinder arch 132, spring two 131 cup joints in cylinder arch 132, and spring two 131 is in movable block 11, between the fixed block 12, hexagon socket head cap screw and the protruding 132 threaded connection of cylinder, hexagon socket head cap screw's lid is in the upper portion of step through-hole, play the limiting displacement of movable block 11 most.

The middle part of the upper and lower edges of the ellipsoid-like body 16 is matched with the inner wall of the jack shell, when the sphere 171 is limited, the distance from the top of the sphere 171 to the midpoint of the lower edge of the ellipsoid-like body 16 is the same as the inner diameter of the jack shell, so that initially, there is a little space between the bottom of the sphere 171 and the ball groove 17 (the distance from the top of the sphere 171 to the midpoint of the lower edge of the ellipsoid-like body 16 is larger than the inner diameter of the jack shell), the end of the jack shell with the mounting hole is sleeved into the ellipsoid-like body 16, the mounting hole is vertically upward, the part of the jack shell without the mounting hole is contacted with the sphere 171 at the beginning, the sphere 171 is compressed, the sphere 171 is collided downwards to the ball groove 17 after being limited (the distance from the top of the sphere 171 to the midpoint of the lower edge of the ellipsoid-like body 16 is equal to the inner diameter of the jack shell), so that the, therefore, the movement of the jack shell up, down, left and right is limited, then when the jack shell is pushed, the part of the jack shell with the installation hole is contacted with the ball 171, the ball 171 enters the installation hole, firstly, the ball 171 loses the contact with the jack shell, the ball 171 moves upwards under the action of the first spring 19, and then the ball 171 is abutted against the edge of the installation hole (the distance from the center of the ball 171 to the front side surface of the square protrusion 15 is the same as the distance from the center of the installation hole to the rear side surface of the jack shell, so that as long as the jack shell is pushed to be abutted against the square protrusion 15, the matching of the installation hole and the ball 171 is already in place).

Then the pressing unit 2 is started, the telescopic rod of the hydraulic cylinder 22 abuts against the moving plate to drive the moving plate to move downwards, the moving plate moves downwards to drive the arc-shaped part 142 to move downwards, the arc-shaped part 142 contacts with the outer wall of the jack shell to drive the jack shell to move downwards, firstly, the jack shell moves downwards to drive the ball 171 to move downwards, after the ball 171 abuts against the ball groove 17 downwards and is limited, the ball 171 cannot move downwards, but the jack shell continues to move downwards, so that the ball 171 compresses the edge of the mounting hole to expand the edge of the mounting hole, after the upper end of the jack shell abuts against the middle part of the upper edge of the ellipsoid-like body 16 (meanwhile, the bottom surface of the flat part 141 also abuts against the top surface of the square protrusion 15, because in order to guarantee the effect of expanding the mounting hole, the hydraulic rod maintains the pressure for a certain time, the flat part 141 abuts against the square protrusion, protection arc part 142 is not damaged), the jack casing also can't move down, and the mounting hole is accomplished to enlarge, and the lid of bolt just can enter into the part that the mounting hole enlarges like this, and the easy to assemble inner core avoids wearing and tearing the sealing washer during the installation.

Claims

1. The jack shell mounting hole expanding device comprises a jack shell, wherein the jack shell is provided with two mounting holes, and the jack shell expanding device is characterized by comprising a die unit (1) and a pressing-down unit (2), wherein the die unit (1) comprises a moving block (11), a fixed block (12) and an elastic mechanism (13) arranged between the moving block (11) and the fixed block (12), the bottom surface of the moving block (11) is detachably connected with a pressing-down block (14), the pressing-down block (14) comprises a flattening part (141) and an arc-shaped part (142), the bottom surface of the arc-shaped part (142) is in an arc shape matched with the outer wall of the jack shell, the bottom surface of the flattening part (141) is flattened, the central position of the fixed block (12) is detachably connected with a square bulge (15), and the front side surface of the square bulge (15) is provided with an ellipse-like body, the long limit of class ellipsoid (16) is the horizontality, the intermediate position of class ellipsoid (16) top is equipped with ball groove (17), ball groove (17) bottom is equipped with spring groove (18), be equipped with spring (19) in spring groove (18), it includes frame (21) and pneumatic cylinder (22) to push down unit (2), the intermediate position of frame (21) is equipped with platform (23), be equipped with on platform (23) with fixed block (12) complex recess (231), still be equipped with on pneumatic cylinder (22) and stabilize unit (3).

2. The expansion device of jack shell mounting hole according to claim 1, wherein the stabilizing unit (3) comprises a connecting block (31) and two limiting strips (32), the connecting block (31) is fixedly connected with the telescopic rod of the hydraulic cylinder (22), the limiting plates (33) are arranged on two sides of the connecting block (31), the two limiting strips (32) are respectively arranged on the left side and the right side of the frame (21), and the limiting strips (32) are provided with strip-shaped through grooves for the limiting plates (33) to pass through.

3. The jack housing mounting hole expanding device as claimed in claim 1, wherein the elastic mechanism (13) comprises a second spring (131) and a hexagon socket head cap screw, cylindrical protrusions (132) are provided at two ends of the fixed block (12), the cylindrical protrusions (132) are provided with threaded holes matched with the hexagon socket cap screw, a step through hole comprising an upper part and a lower part is provided at a position of the moving block (11) corresponding to the threaded hole, the diameter of the upper part of the step through hole is larger, the diameter of the lower part is smaller, the lower part of the step through hole is matched with the cylindrical protrusions (132), the second spring (131) is sleeved on the cylindrical protrusions (132), and the second spring (131) is located between the moving block (11) and the fixed block (12).

4. A jack housing mounting hole enlarging apparatus as claimed in claim 1 wherein the distance from the centre of the ball (171) to the front side of the square boss (15) is the same as the distance from the centre of the mounting hole to the rear side of the jack housing.

5. A jack housing mounting hole enlarging apparatus as claimed in claim 1 wherein the upper and lower edges of said ellipsoid (16) are curved at their midportions to match the inner wall of the jack housing.

6. A jack housing mounting hole enlarging device as claimed in claim 1 wherein the distance from the top of the ball (171) to the midpoint of the lower edge of the ellipsoid-like body (16) is equal to the inner diameter of the jack housing after the ball (171) is urged downwardly into the ball groove (17) to be restrained.