CN212043444U

CN212043444U - Jack top assembling and fixing mechanism

Info

Publication number: CN212043444U
Application number: CN202020442013.5U
Authority: CN
Inventors: 龚鑫火; 龚力
Original assignee: Jiaxing Shuntian Machinery Co ltd
Current assignee: Jiaxing Shuntian Machinery Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-12-01
Anticipated expiration: 2030-03-31

Abstract

The utility model provides a jack top equipment fixed establishment, it has solved the inconvenient scheduling problem of jack top equipment, it sets up in screwing up the quick-witted main part, including screwing up the main part pivoted rotation post relatively, the rotation post lower extreme is connected with fixed rotating assembly, fixed rotating assembly is including rotating the rotor arm of connection in rotation post lower extreme both sides, the rotor arm lower extreme rotates and is connected with semi-cylindric tight piece that presss from both sides, it is connected with return spring to press from both sides between the tight piece, it has a section of thick bamboo to rotate post outside cover, it is equipped with roller bearing to press from both sides tight a section of thick bamboo and press from both sides between the tight piece, press from both sides tight section of thick bamboo and screw up the main part through cylinder lifting subassembly and be connected, screw up quick-witted main part below and be equipped with top. The utility model has the advantages of the packaging efficiency is high, each subassembly location is convenient.

Description

Jack top assembling and fixing mechanism

Technical Field

The utility model belongs to the technical field of the weightlifting equipment, concretely relates to jack top equipment fixed establishment.

Background

The jack is light and small lifting equipment which takes a rigid jacking piece as a working device and jacks a heavy object through a top bracket or a bottom supporting claw within a small stroke. The jack is mainly used for the departments of factories, mines, transportation and the like as vehicle repair, other lifting, supporting and the like. The structure is light, firm, flexible and reliable, and can be carried and operated by one person. The jacks are divided into a mechanical jack, a hydraulic jack and the like, and the principles are different. In principle, the most basic principle on which a hydraulic drive is based is pascal's law, i.e. the pressure is uniform throughout the liquid. Thus, in a balanced system, a relatively small piston exerts a relatively small pressure on it, while a large piston exerts a relatively large pressure on it, which keeps the liquid still. Therefore, different pressures at different ends can be obtained by the liquid transfer, and the purpose of conversion can be achieved. The common hydraulic jack uses the principle to achieve the force transmission. The screw jack pulls the handle in a reciprocating way, the claw pushes the ratchet wheel to rotate in a clearance way, the bevel pinion drives the bevel pinion to rotate the lifting screw rod, and therefore the lifting sleeve can be lifted or descended to achieve the function of lifting tension, but the screw jack is not as simple as a hydraulic jack. However, in the production process of the hydraulic jack, the jacking head of the jack adopts a manual installation mode, so that time and labor are wasted, and a large amount of manpower is wasted. In addition, the phase position is difficult to fix when each subassembly of jack is assembled, relative dislocation easily takes place during the assembly.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses a jack pin assembly mechanism [201921185418.9], which includes: the bottom plate, a third slide rail, the microscope carrier, the positioning column, the assembling unit and the jack jig, wherein the third slide rail is arranged on the bottom plate, the microscope carrier is arranged on the third slide rail in a sliding mode, a fifth driving device used for driving the microscope carrier to slide is arranged on the bottom plate, the positioning column is arranged at one end, in the extending direction of the third slide rail, of the microscope carrier through the first fixing plate, the assembling unit is arranged at the other end of the microscope carrier through the second fixing plate, and the jack jig is arranged above the microscope carrier and located between the positioning column and the assembling.

Above-mentioned scheme has solved the difficult fixed problem in assembly component relative position when the jack equipment to a certain extent, but this scheme still has a lot of not enough, for example the inconvenient scheduling problem of manual installation top.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, top simple to operate's jack top equipment fixed establishment.

In order to achieve the above purpose, the utility model adopts the following technical proposal: this jack top equipment fixed establishment, the setting is in screwing up the quick-witted main part, this fixed establishment is including screwing up quick-witted main part pivoted rotation post relatively, the rotation post lower extreme is connected with fixed rotating assembly, fixed rotating assembly is including rotating the rotor arm of connection in rotation post lower extreme both sides, the rotor arm lower extreme rotates and is connected with semi-cylindric tight piece of clamp, be connected with return spring between the tight piece of clamp, the cover of rotation post outside has a clamping section of thick bamboo, be equipped with roller bearing between a clamping section of thick bamboo and the tight piece of clamp, a clamping section of thick bamboo passes through cylinder lifting subassembly and screws up the main part and be connected, it is equipped with top fixed establishment to screw up quick-witted main part below, top fixed establishment sets up in. The clamping cylinder can clamp and fix the ejector rod of the jack and rotate along with the rotating column by sliding up and down relative to the clamping block, so that the ejector head fixed on the ejector head fixing mechanism is installed on the ejector rod in a rapid rotating mode, the installation efficiency is improved, and the ejector head of the jack is convenient to assemble rapidly.

In the above jack plug assembling and fixing mechanism, the roller of the roller bearing is obliquely arranged, the outer ring of the roller bearing is fixed opposite to the inner side of the clamping cylinder, and the inner ring of the roller bearing is arranged opposite to the outer side of the clamping block. The clamping block clamps the ejector rod under the limitation of the roller bearing, and the clamping block rotates relative to the clamping cylinder under the action of the roller bearing.

In the above jack plug assembling and fixing mechanism, the inner side of the inner ring of the roller bearing is obliquely arranged, and the diameter of the opening at the upper end of the inner ring is smaller than that of the opening at the lower end. When the clamping cylinder slides downwards, the inclined inner ring is favorable for the contraction and clamping of the clamping block.

In the jack top assembling and fixing mechanism, the two sides of the lower end of the rotating column are provided with the rotating arm mounting plates, and the rotating arms are mounted on the two sides of the rotating arm mounting plates. The rotating arm rotates relative to the rotating arm mounting plate to ensure the normal contraction of the clamping block.

In the jack head assembling and fixing mechanism, the inner side of the clamping block is provided with an arc-shaped surface extending axially, and the arc-shaped surface is provided with an anti-skid layer. The anti-slip layer improves the friction force between the clamping block and the ejector rod, and ensures that the clamping block drives the ejector rod to rotate and is screwed down with the jack head of the jack.

In foretell jack top equipment fixed establishment, cylinder lifting subassembly is including rotating the first lifting arm of connection in clamping cylinder both sides, and the first lifting arm other end rotates and is connected with the second lifting arm, and the second lifting arm other end is connected with the third lifting arm, and the third lifting arm other end rotates with the push rod of the lifting cylinder on the tightening machine main part to be connected, is connected with the fixed axle between the revolute joint of second lifting arm and third lifting arm, and the fixed axle is fixed on the mount on the tightening machine main part. The cylinder lifting assembly provides movement torque for the clamping cylinder, and the clamping cylinder is guaranteed to slide in the axial direction.

In the jack top assembling and fixing mechanism, the rotating joint of the first lifting arm and the second lifting arm is provided with a limiting block for limiting the relative rotating angle of the first lifting arm and the second lifting arm. The limiting block limits the relative rotation angle of the first lifting arm and the second lifting arm, and sufficient movement allowance is reserved between the clamping barrel and the fixing shaft.

In foretell jack top equipment fixed establishment, top fixed establishment is including setting up the fixed baseplate in screwing up the quick-witted main part, and it has the sliding tray of a plurality of horizontal settings to open on the fixed baseplate, and fixed baseplate has two fixed blocks that set up relatively through sliding tray sliding connection, and the fixed block lower extreme is equipped with the sliding block relative with the sliding tray, and open the fixed block upper end has the screw hole, and the screw hole internal rotation is connected with compresses tightly spacing post and compresses tightly spacing post upper end side and be fixed with the compression handle. The relative position of the fixed block can be adjusted by rotating the pressing handle, so that the ejector is suitable for ejectors with different sizes.

In the jack head assembling and fixing mechanism, the opposite end surfaces of the fixing blocks are provided with the pressing layers made of elastic materials. The compressing layer has certain elasticity, and the connection tightness of the compressing back top block and the fixed base is improved.

In the above jack head assembling and fixing mechanism, the sliding groove and the sliding block are of a T-shaped structure. The sliding groove and the sliding block of the T-shaped structure ensure that the fixed block cannot fall off from the fixed base.

Compared with the prior art, the utility model has the advantages of: the fixed rotating assembly is matched with the cylinder lifting assembly to ensure that the ejector rod rotates relatively, so that the ejector head of the jack can be conveniently and quickly mounted; the jacking head fixing mechanism is convenient for fixing the mounting position of the jacking head of the jack, and the adjusting mode is simple; the anti-skid layer and the clamping layer ensure the tightness of the ejector rod and the ejector head after clamping and positioning.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic cross-sectional view of the stationary rotating assembly of the present invention;

FIG. 3 is a schematic structural view of the lower end of the rotary column of the present invention;

fig. 4 is a schematic structural view of the plug fixing mechanism of the present invention;

in the figure, the tightening machine comprises a tightening machine body 1, a lifting cylinder 11, a push rod 12, a rotating column 2, a rotating arm mounting plate 21, a fixed rotating assembly 3, a rotating arm 31, a clamping block 32, a return spring 33, a clamping cylinder 34, an arc-shaped surface 35, an anti-slip layer 36, a roller bearing 4, a roller 41, an outer ring 42, an inner ring 43, a cylinder lifting assembly 5, a first lifting arm 51, a second lifting arm 52, a third lifting arm 53, a fixed shaft 54, a fixed bracket 55, a limiting block 56, a top fixing mechanism 6, a fixed base 61, a sliding groove 62, a fixed block 63, a sliding block 64, a threaded hole 65, a pressing limiting column 66, a pressing handle 67 and a pressing layer 68.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-4, the jack top assembly fixing mechanism is arranged on a tightening machine body 1, and comprises a rotating column 2 rotating relative to the tightening machine body 1, wherein the lower end of the rotating column 2 is connected with a fixed rotating assembly 3, the fixed rotating assembly 3 comprises rotating arms 31 rotatably connected to two sides of the lower end of the rotating column 2, the lower end of each rotating arm 31 is rotatably connected with a semi-cylindrical clamping block 32, a return spring 33 is connected between the clamping blocks 32, a clamping cylinder 34 is sleeved outside the rotating column 2, a roller bearing 4 is arranged between the clamping cylinder 34 and the clamping block 32, the clamping cylinder 3 is connected with the tightening machine body 1 through a cylinder lifting assembly 5, a top fixing mechanism 6 is arranged below the tightening machine body 1, and the top fixing mechanism 6 is arranged below the rotating column 2. When the device works, the clamping cylinder 34 moves along the axial direction of the rotating column 2 under the driving of the cylinder lifting assembly 5, when the clamping cylinder 34 moves downwards, the clamping block 32 is relatively tightened to press the mandril fixed inside, and meanwhile, the roller bearing 4 ensures that the clamping block 32 can rotate relative to the clamping cylinder 3, so that the clamping block is rotatably connected with the mandril fixed in the mandril fixing mechanism 6; after the installation is completed, the clamping cylinder 34 moves upwards, and the clamping block 32 is opened under the action of the return spring 33, so that the next assembly of the jacking head and the jacking rod of the jack is carried out.

Specifically, the rollers 41 of the roller bearing 4 are disposed obliquely, the outer race 42 of the roller bearing 4 is fixed to the inside of the clamp cylinder 34, and the inner race 43 of the roller bearing 4 is disposed to face the outside of the clamp block 32. The outer race 42 and the inner race 43 of the roller bearing 4 rotate relative to each other, thereby reducing the relative friction between the clamping cylinder 34 and the clamping block 32.

Further, the inner ring 43 of the roller bearing 4 is disposed obliquely, and the inner ring 43 has an upper end opening diameter smaller than a lower end opening diameter. The inner race 43 of the roller bearing 4 is flared with a downward opening to help retract the clamping blocks 32 on either side of the lower end of the rotary post 2 as the clamping cylinder 34 moves downwardly.

As can be seen, the two sides of the lower end of the rotating column 2 are provided with rotating arm mounting plates 21, and the rotating arms 31 are mounted on the two sides of the rotating arm mounting plates 21. The width of the rotating arm mounting plate 21 is smaller than the diameter of the rotating column 2, so that the rotating arm 31 is not contacted with the inner side of the clamping cylinder 34.

It is clear that the clamping blocks 32 are provided with an axially extending arc-shaped surface 35 on the inside and that the arc-shaped surface 35 is provided with an anti-slip layer 36. The anti-slip layer 36 is mainly used for improving the friction force between the clamping block 32 and the ejector rod, and covers the surface of the arc-shaped surface 35.

Further, the cylinder lifting assembly 5 comprises a first lifting arm 51 rotatably connected to two sides of the clamping cylinder 34, the other end of the first lifting arm 51 is rotatably connected with a second lifting arm 52, the other end of the second lifting arm 52 is connected with a third lifting arm 53, the other end of the third lifting arm 53 is rotatably connected with the push rod 12 of the lifting cylinder 11 on the tightening machine body 1, a fixed shaft 54 is connected between the rotating joints of the second lifting arm 52 and the third lifting arm 53, and the fixed shaft 54 is fixed on a fixed frame 55 on the tightening machine body 1. The lifting cylinder 11 of the cylinder lifting assembly 5 is lifted, the first lifting arm 51 and the second lifting arm 52 swing downwards along with the lifting cylinder, wherein the fixing frame 55 and the fixing shaft 54 are used as supporting points, and the clamping cylinder 34 slides downwards along with the supporting points.

Furthermore, a limit block 56 for limiting the relative rotation angle of the first lifting arm 51 and the second lifting arm 52 is arranged at the rotation joint of the first lifting arm 51 and the second lifting arm 52. The first lifting arm 51 and the second lifting arm 52 can rotate at a certain angle when lifted or dropped, so that the clamping cylinder 34 is ensured to be vertically arranged under the restriction of the rotating column 2 or the clamping block 32.

In addition, the plug fixing mechanism 6 comprises a fixing base 61 arranged on the tightening machine main body 1, a plurality of sliding grooves 62 transversely arranged are formed in the fixing base 61, the fixing base 61 is connected with two fixing blocks 63 oppositely arranged through the sliding grooves 62 in a sliding mode, sliding blocks 64 opposite to the sliding grooves 62 are arranged at the lower ends of the fixing blocks 63, threaded holes 65 are formed in the upper ends of the fixing blocks 63, pressing limiting columns 66 are rotatably connected in the threaded holes 65, and pressing handles 67 are fixed on the side faces of the upper ends of the pressing limiting columns 66. After the fixed block 63 slides to a desired position, the end face is attached to the top block and pressed tightly, the pressing handle 67 is rotated, the pressing limiting column 66 rotates downwards and moves, and the fixed block 63 is pressed and fixed on the fixed base 61.

Meanwhile, the opposite end surfaces of the fixing block 63 are provided with pressing layers 68 made of an elastic material. The pressing layer 68 is attached to and pressed against the top block, so that sliding dislocation is avoided.

Preferably, the slide slot 62 and the slide block 64 are T-shaped. After the sliding block 64 is connected with the sliding groove 62, the sliding block can be ejected out from two ends, and the installation stability of the fixed block 63 is ensured.

In summary, the principle of the present embodiment is: after the mandril is clamped by the clamping block 32 at the lower end of the rotating column 2, the clamping cylinder 34 moves downwards under the driving of the cylinder lifting assembly 5, and the clamping block 32 is pressed by a radial direction, so that the mandril is fixed and rotates along with the rotating column 2 relative to the mandril fixed on the mandril fixing mechanism 6, and the mandril is quickly connected and installed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the tightening machine body 1, the lifting cylinder 11, the push rod 12, the rotary column 2, the rotary arm mounting plate 21, the fixed rotary assembly 3, the rotary arm 31, the clamping block 32, the return spring 33, the clamping cylinder 34, the arc-shaped surface 35, the anti-slip layer 36, the roller bearing 4, the roller 41, the outer ring 42, the inner ring 43, the cylinder lifting assembly 5, the first lifting arm 51, the second lifting arm 52, the third lifting arm 53, the fixed shaft 54, the fixed bracket 55, the limit block 56, the head fixing mechanism 6, the fixed base 61, the sliding groove 62, the fixed block 63, the sliding block 64, the threaded hole 65, the pressing limit column 66, the pressing handle 67, and the pressing layer 68 are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A jack top assembling and fixing mechanism is arranged on a tightening machine main body (1) and is characterized by comprising a rotating column (2) which rotates relative to the tightening machine main body (1), wherein the lower end of the rotating column (2) is connected with a fixed rotating assembly (3), the fixed rotating assembly (3) comprises a rotating arm (31) which is rotatably connected to two sides of the lower end of the rotating column (2), the lower end of the rotating arm (31) is rotatably connected with a semi-cylindrical clamping block (32), a return spring (33) is connected between the clamping blocks (32), a clamping cylinder (34) is sleeved outside the rotating column (2), a roller bearing (4) is arranged between the clamping cylinder (34) and the clamping block (32), the clamping cylinder (34) is connected with the tightening machine main body (1) through an air cylinder lifting assembly (5), and a top fixing mechanism (6) is arranged below the tightening machine main body (1), the top fixing mechanism (6) is arranged below the rotating column (2).

2. The jack plug assembling and fixing mechanism according to claim 1, wherein the rollers (41) of the roller bearing (4) are arranged obliquely, the outer ring (42) of the roller bearing (4) is fixed opposite to the inner side of the clamping cylinder (34), and the inner ring (43) of the roller bearing (4) is arranged opposite to the outer side of the clamping block (32).

3. The jack top assembling and fixing mechanism according to claim 2, wherein the inner ring (43) of the roller bearing (4) is arranged obliquely, and the diameter of the upper end opening of the inner ring (43) is smaller than that of the lower end opening.

4. The lifting jack top assembling and fixing mechanism according to claim 1, wherein the two sides of the lower end of the rotating column (2) are provided with rotating arm mounting plates (21), and the rotating arms (31) are mounted on the two sides of the rotating arm mounting plates (21).

5. The jack plug assembling and fixing mechanism according to claim 1, 2, 3 or 4, wherein the clamping block (32) is provided with an axially extending arc-shaped surface (35) on the inner side and the arc-shaped surface (35) is provided with an anti-slip layer (36).

6. The lifting jack top assembling and fixing mechanism according to claim 1, wherein the cylinder lifting assembly (5) comprises a first lifting arm (51) rotatably connected to both sides of the clamping cylinder (34), the other end of the first lifting arm (51) is rotatably connected to a second lifting arm (52), the other end of the second lifting arm (52) is connected to a third lifting arm (53), the other end of the third lifting arm (53) is rotatably connected to the push rod (12) of the lifting cylinder (11) on the tightening machine body (1), a fixed shaft (54) is connected between the rotating joints of the second lifting arm (52) and the third lifting arm (53), and the fixed shaft (54) is fixed on a fixed frame (55) on the tightening machine body (1).

7. The jack plug assembling and fixing mechanism according to claim 6, wherein a limit block (56) for limiting the relative rotation angle of the first lifting arm (51) and the second lifting arm (52) is arranged at the rotation joint of the first lifting arm (51) and the second lifting arm (52).

8. The jack top assembling and fixing mechanism as claimed in claim 1, wherein the top fixing mechanism (6) comprises a fixing base (61) arranged on the tightening machine body (1), a plurality of sliding grooves (62) transversely arranged are formed in the fixing base (61), the fixing base (61) is connected with two fixing blocks (63) oppositely arranged through the sliding grooves (62) in a sliding mode, sliding blocks (64) opposite to the sliding grooves (62) are arranged at the lower end of each fixing block (63), a threaded hole (65) is formed in the upper end of each fixing block (63), a pressing limiting column (66) is connected in the threaded hole (65) in a rotating mode, and a pressing handle (67) is fixed on the side face of the upper end of each pressing limiting column (66).

9. The jack plug assembling and fixing mechanism according to claim 8, wherein the opposite end surfaces of the fixing block (63) are provided with pressing layers (68) made of elastic materials.

10. The jacking head assembling and fixing mechanism of claim 8, wherein said sliding groove (62) and said sliding block (64) are T-shaped.