CN210588011U

CN210588011U - Device for press-mounting tungsten block on crankshaft

Info

Publication number: CN210588011U
Application number: CN201921212373.XU
Authority: CN
Inventors: 胡林锋; 余晓锋; 王浪
Original assignee: Jingzhou Huanqiu Automobile Parts Manufacturing Co ltd
Current assignee: Jingzhou Huanqiu Automobile Parts Manufacturing Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-05-22
Anticipated expiration: 2029-07-30

Abstract

The utility model provides a device of crankshaft pressure equipment tungsten piece, including hydraulic assembly and base, hydraulic assembly's below is provided with the depression bar, the depression bar is the step axle form, and the depression bar upper segment is big step section, and the depression bar hypomere is little step section, and depression bar upper segment and hydraulic assembly's piston rod fixed connection, depression bar hypomere bottom are equipped with strong magnetic sheet, and depression bar hypomere cover is equipped with the cylindric depression bar cover, and depression bar cover inner wall upper segment is equipped with the mounting groove, and spring A is located the mounting groove, and spring A upper segment exposes in depression bar cover upper portion, and the depression bar cover is along vertically being equipped with the spacing cotter way of strip, and the spacer pin passes spacing cotter way and is connected with the depression bar hypomere, and the spacer pin can be followed spacing cotter way and slided from top to bottom. The device of the utility model is simple in structure, pressure equipment tungsten piece is efficient, and the device low in manufacturing cost, and convenient to use is applicable to the tungsten piece installation of different specifications, and the security has obtained very big improvement, and the time limit for a project shortens greatly.

Description

Device for press-mounting tungsten block on crankshaft

Technical Field

The utility model relates to a device of bent axle pressure equipment tungsten piece belongs to machining technical field.

Background

The crankshaft needs to rotate at a high speed in work, the shape of the crankshaft is complex and is in an asymmetric state, and vibration can be generated in the rotating process due to an unbalanced state, so that the dynamic balance state of the crankshaft needs to be adjusted, the vibration amplitude and frequency of the crankshaft after high-speed rotation are reduced, and the phenomenon that the crankshaft is broken even due to the fact that the momentum peak value is generated due to poor balance degree is avoided. The dynamic balance of the crankshaft is generally adjusted by testing through a dynamic balancing machine, and materials, namely a crankshaft balance block, also called a balance weight, are added or reduced at an unstressed part of the crankshaft, so that the crankshaft has better dynamic balance performance when rotating at high speed.

According to the currently used crankshaft product, due to the design requirements of an engine, the unbalanced weight of the crankshaft is located on one side of a connecting rod journal, and in order to enable the crankshaft to finally meet the requirement of the unbalanced weight of a drawing, a tungsten block with high density needs to be pressed on a crankshaft balance block in a pressing mode, so that the unbalanced weight of the crankshaft is transferred to one side of the balance block. The steps for completing dynamic balance are complex, firstly, drilling is needed to be carried out on the side face of the balance block, then, a tungsten block is pressed from the side face of the balance block, the unbalance is transferred to one side of the balance block, and finally, drilling is carried out on the excircle of other balance blocks to remove the weight.

The existing methods for pressing the tungsten block mainly comprise two methods, one method is to fix a workpiece on a platform, manually use a hammer to knock the tungsten block, and enable the tungsten block to be arranged in a crankshaft balance block, so that the method is time-consuming and labor-consuming, is easy to damage the workpiece, and can cause the tungsten block to fly out to hurt people; the other method is press fitting by using a press, but the method is only suitable for workpieces of general types, but cannot be used for crankshaft workpieces with complex shapes.

Because the balance block of the crankshaft product used by the company is in a special position and the number of press-fitting tungsten blocks is large, if the traditional mode is adopted for manual press-fitting, the method is neither economical nor safe, the construction period is long, and the press-fitting effect is difficult to guarantee.

Disclosure of Invention

An object of the utility model is to overcome exist not enough among the prior art to a device of bent axle pressure equipment tungsten piece is provided, the device simple structure, pressure equipment tungsten piece is efficient, the tungsten piece is impressed effectually, the degree of depth of impressing is guaranteed, and the device low in manufacturing cost, convenient to use is applicable to the tungsten piece installation of different specifications, can not bruise bent axle work piece surface at pressure equipment tungsten piece in-process, and the security has obtained very big improvement, and the time limit for a project shortens greatly.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a device of tungsten piece is adorned to bent axle pressure, includes hydraulic assembly and base, hydraulic assembly's below is provided with the depression bar, the depression bar is the step axle form, and the depression bar upper segment is big step section, and the depression bar hypomere is little step section, and depression bar upper segment and hydraulic assembly's piston rod fixed connection, depression bar hypomere bottom are equipped with strong magnet piece, and depression bar hypomere cover is equipped with the cylindric depression bar cover, and depression bar cover inner wall upper segment is equipped with the mounting groove, and spring A is located the mounting groove and the suit in the depression bar hypomere, and spring A upper segment exposes in depression bar cover upper portion, and the depression bar cover is along vertically being equipped with the spacing cotter way of strip, and the spacer pin passes spacing cotter way and is connected with the depression bar hypomere, and the spacer pin can.

The further improvement of the scheme is as follows: the base at least comprises a fixing seat, a support, a reinforcing plate and a working table plate, the support is fixedly connected with the fixing seat and the working table plate through the reinforcing plate, the fixing seat and the working table plate are horizontally arranged, the support is perpendicular to the fixing seat and the working table plate, and a positioning hole in the base is located in the working table plate.

The positioning assembly is arranged in a positioning hole of the working table plate and comprises a positioning pin, a baffle and a spring B, the positioning pin is in a step shaft shape, the upper section of the positioning pin is a large step section, the lower section of the positioning pin is a small step section, a positioning assembly mounting hole of the working table plate is a step hole, the diameter of a large hole at the upper section of the positioning pin is matched with that of the upper section of the positioning pin, the diameter of a small hole at the lower section of the positioning pin is matched with that of the lower section of the positioning pin, the spring B is sleeved on the lower section of the positioning pin, the bottom of the spring B.

The bottom of the pressure rod sleeve is arc-shaped.

The stroke of the limiting pin in the limiting pin groove is not less than the thickness of the tungsten block to be installed.

The bottom of the pressure rod sleeve is provided with a groove.

The hydraulic assembly includes at least a hydraulic cylinder and a hydraulic station.

The top of the pressure lever is provided with a thread, and the pressure lever is fixedly connected with a piston rod of the hydraulic assembly through the thread.

According to the technical scheme of the utility model, the device for press mounting the tungsten block on the crankshaft provided by the utility model has the advantages that the pressure rod sleeve is longitudinally provided with the strip-shaped limiting pin groove, the limiting pin slides up and down along the limiting pin groove to realize the limiting function, the limiting stroke of the limiting pin groove is consistent with the thickness of the tungsten block to be mounted, and the pressing depth of the tungsten block is ensured; the positioning hole on the base corresponds to the position of the pressure rod, and the tungsten block mounting hole of the crankshaft workpiece is adjusted to be consistent with the positioning hole, so that the tungsten block can be smoothly pressed in; a detachable elastic telescopic mechanism positioning component is further additionally arranged, so that the positioning is more accurate, convenient, rapid and efficient; the bottom of the pressure rod sleeve is arc-shaped, so that the situation that the pressure rod sleeve contacts with a crankshaft workpiece to damage the surface of the workpiece when a tungsten block is installed is effectively avoided; the bottom of the pressure rod sleeve is provided with a groove, so that the pressure rod sleeve can be prevented from being blocked and collided with a flange part of a crankshaft workpiece in the advancing process; the hydraulic component of the utility model adopts the common hydraulic cylinder and the hydraulic station, the production cost is lower, and the manufacture is simple; the top of the pressure lever is provided with threads, so that the pressure lever is convenient to disassemble and assemble, pressure levers and pressure lever sleeves with different specifications can be selected and replaced according to the thickness and the size of tungsten blocks to be pressed, and the pressure lever is suitable for pressing and assembling tungsten blocks with various specifications, flexible and convenient and high in practicability; the lower part of the pressure lever is provided with the strong magnetic sheet, so that the tungsten block can be attracted on the pressure lever, and the device is very convenient and quick and is suitable for large-batch tungsten block installation; use the utility model discloses a device carries out the pressure equipment safety of bent axle tungsten piece high-efficient, and manufacturing cost significantly reduces.

Drawings

Fig. 1 is a schematic structural view of the present invention when the tungsten block is not pressed into the crankshaft workpiece.

Fig. 2 is a schematic structural view of the tungsten block after being pressed into the crankshaft workpiece.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Fig. 4 is a partially enlarged view of fig. 1 at C.

Fig. 5 is a sectional view taken along line B-B of fig. 2.

In the figure: 1. the hydraulic assembly comprises a hydraulic assembly, 2 pressure rods, 3 pressure rod sleeves, 4 strong magnetic sheets, 5 positioning pins, 6 supports, 7 springs A, 8 springs B, 9 tungsten blocks, 10 crankshaft workpieces, 11 fixing seats, 12 reinforcing plates, 13 working table plates, 14 limiting pins, 15 limiting pin grooves and 16 baffle plates.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1 and 2, the utility model discloses device of bent axle pressure equipment tungsten piece, including hydraulic assembly 1 and base, hydraulic assembly includes pneumatic cylinder and hydraulic pressure station at least. The lower part of the hydraulic component is provided with a pressure lever 2, the pressure lever 2 is in a step shaft shape, the upper section of the pressure lever 2 is a large step section, the lower section of the pressure lever 2 is a small step section, the top of the pressure lever 2 is provided with threads, the pressure lever 2 is fixedly connected with a piston rod of a hydraulic cylinder through the threads, the bottom of the lower section of the pressure lever 2 is provided with a strong magnetic sheet 4, the lower section of the pressure lever 2 is sleeved with a cylindrical pressure lever sleeve 3, the upper section of the inner wall of the pressure lever sleeve 3 is provided with an installation groove, a spring A7 is positioned in the installation groove and sleeved at the lower section of the pressure lever 2, the upper section of a spring A7 is exposed at the upper part of the pressure lever sleeve 3, the pressure lever sleeve 3 is longitudinally provided with a strip-shaped limit pin groove 15, a. The bottom of the pressure rod sleeve 3 is arc-shaped, and a groove is formed in the bottom of the pressure rod sleeve 3 in order to prevent the pressure rod sleeve 3 from colliding with a flange of a crankshaft workpiece 10 and blocking when the tungsten block 9 is pressed and installed.

The base at least comprises a fixed seat 11, a support 6, a reinforcing plate 12 and a working table plate 13, wherein the support 6 is fixedly connected with the fixed seat 11 and the working table plate 13 through the reinforcing plate 12 respectively, the fixed seat 11 and the working table plate 13 are horizontally arranged, the support 6 is mutually vertical to the fixed seat 11 and the working table plate 13, a positioning hole is formed in the working table plate 13, the positioning hole in the working table plate 13 corresponds to the position of the compression bar 2, and the aperture of the positioning hole is matched with that of a tungsten block mounting hole of a crankshaft workpiece, so that the positioning function is realized.

The further improvement of the embodiment is as follows: the positioning assembly is arranged in the positioning hole in the working table plate 13 and comprises a positioning pin 5, a baffle plate 16 and a spring B8, the positioning pin 5 is in a step shaft shape, the upper section of the positioning pin 5 is a large step section, the lower section of the positioning pin 5 is a small step section, the positioning assembly mounting hole of the working table plate 13 is a step hole, the diameter of the large hole in the upper section of the positioning pin is matched with that of the upper section of the positioning pin 5, the diameter of the small hole in the lower section of the positioning pin is matched with that of the small section of the positioning pin 5, the spring B8 is sleeved on the lower section of the positioning pin 5, the bottom of the spring B8 is positioned at.

The working principle of the utility model is as follows: firstly, a tungsten block 9 is arranged in a pressure rod sleeve 3, the strong magnetic sheet 4 absorbs the tungsten block 9 at the lower end of a pressure rod 2, and the bottom surface of the tungsten block 9 is flush with the bottom of the pressure rod sleeve. And then the crankshaft workpiece 10 is placed on the working table plate 13, at the moment, the crankshaft workpiece 10 presses the positioning pin 5, the spring B8 is compressed, the positioning pin 5 descends into the positioning component mounting hole, the crankshaft workpiece 10 is moved, when the tungsten block mounting hole in the crankshaft workpiece 10 is overlapped with the positioning pin 5 in position, the spring B8 is reset due to pressure disappearance, the positioning pin 5 pops out along with the resetting of the spring B8 and is clamped in the tungsten block mounting hole of the crankshaft workpiece 10, and therefore the positioning function is achieved.

The hydraulic cylinder descending switch of the hydraulic component 1 is started, the piston rod drives the press rod 2 to descend, the press rod sleeve 3 descends along with the press rod 2, the press rod sleeve 3 firstly contacts with the crankshaft workpiece 10 in the advancing process and stops descending, at the moment, the press rod 2 continues descending along with the piston rod of the hydraulic cylinder, the spring A7 starts to compress, the limit pin 14 descends along the limit pin groove 15, the tungsten block 9 is pressed into the crankshaft workpiece 10 along with descending of the press rod 2, at the moment, the spring A7 starts to compress, the positioning pin 5 descends along with pressing of the tungsten block 9, when the limit pin 14 travels to the limit pin groove 15 for limiting, the limit pin 14 stops descending, and as the limit stroke of the limit pin 14 is equal to the thickness of the tungsten block 9, at the moment, the tungsten block 9 is completely pressed into the.

The hydraulic cylinder ascending switch of the hydraulic assembly 1 is started, the piston rod drives the pressure rod 2 to ascend, the spring A7 resets, the limit pin 14 is driven to ascend to the upper limit position along the limit pin groove 15, and the tungsten block 9 is remained on the crankshaft workpiece 10 due to interference fit with the tungsten block mounting hole of the crankshaft workpiece 10. When the crankshaft workpiece 10 is removed from the table plate 13, the spring B8 is returned by the pressure loss, and the spring B8 pushes up the positioning pin 5 to return to the original position, thereby restoring the positioning function.

If tungsten blocks 9 with different specifications and sizes need to be installed, the top threads of the pressure lever 2 can be adjusted, the pressure lever 2 is screwed down from a piston rod of the hydraulic cylinder, and components such as the pressure lever 2, the pressure lever sleeve 3 and the like are replaced to correspond to the tungsten blocks 9 in size; the working table plate 13 is movable or detachable, the working table plate 13 is moved or replaced, and the positioning assembly is replaced to match the size of the tungsten block 9, so that the tungsten blocks 9 with different sizes can be pressed and mounted.

The utility model provides a device of bent axle pressure equipment tungsten piece has simple structure, and the operation is safe swift, a great deal of advantage such as efficient of pressure equipment tungsten piece, just the utility model has the advantages of multiple combination form can realize the pressure equipment of multiple different specification tungsten pieces, and is nimble changeable, and practical function is stronger.

Claims

1. The utility model provides a device of bent axle pressure equipment tungsten piece, includes hydraulic assembly and base, its characterized in that: the hydraulic component is characterized in that a pressing rod is arranged below the hydraulic component and is in a stepped shaft shape, the upper section of the pressing rod is a large stepped section, the lower section of the pressing rod is a small stepped section, the upper section of the pressing rod is fixedly connected with a piston rod of the hydraulic component, a strong magnetic sheet is arranged at the bottom of the lower section of the pressing rod, a cylindrical pressing rod sleeve is sleeved on the lower section of the pressing rod, an installation groove is formed in the upper section of the inner wall of the pressing rod sleeve, a spring A is located in the installation groove and sleeved on the lower section of the pressing rod, the upper section of the spring A is exposed out of the upper part of the pressing rod sleeve, a strip-shaped limiting pin groove is longitudinally formed in the pressing rod sleeve, a limiting pin penetrates.

2. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 1, wherein: the base at least comprises a fixing seat, a support, a reinforcing plate and a working table plate, the support is fixedly connected with the fixing seat and the working table plate through the reinforcing plate, the fixing seat and the working table plate are horizontally arranged, the support is perpendicular to the fixing seat and the working table plate, and a positioning hole in the base is located in the working table plate.

3. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 2, wherein: the positioning assembly is arranged in a positioning hole of the working table plate and comprises a positioning pin, a baffle and a spring B, the positioning pin is in a step shaft shape, the upper section of the positioning pin is a large step section, the lower section of the positioning pin is a small step section, a positioning assembly mounting hole of the working table plate is a step hole, the diameter of a large hole at the upper section of the positioning pin is matched with that of the upper section of the positioning pin, the diameter of a small hole at the lower section of the positioning pin is matched with that of the lower section of the positioning pin, the spring B is sleeved on the lower section of the positioning pin, the bottom of the spring B.

4. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 1, wherein: the bottom of the pressure rod sleeve is arc-shaped.

5. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 1, wherein: the stroke of the limiting pin in the limiting pin groove is not less than the thickness of the tungsten block to be installed.

6. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 1, wherein: the bottom of the pressure rod sleeve is provided with a groove.

7. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 1, wherein: the hydraulic assembly includes at least a hydraulic cylinder and a hydraulic station.

8. A device for press-fitting a tungsten block on a crankshaft as claimed in claim 1, wherein: the top of the pressure lever is provided with a thread, and the pressure lever is fixedly connected with a piston rod of the hydraulic assembly through the thread.