CN217019304U - Multi-pressure head self-balancing hydraulic system - Google Patents
Multi-pressure head self-balancing hydraulic system Download PDFInfo
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- CN217019304U CN217019304U CN202220508278.XU CN202220508278U CN217019304U CN 217019304 U CN217019304 U CN 217019304U CN 202220508278 U CN202220508278 U CN 202220508278U CN 217019304 U CN217019304 U CN 217019304U
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- oil cylinder
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Abstract
The utility model discloses a multi-pressure head self-balancing hydraulic system which is characterized by consisting of a press-mounting machine connecting bolt hole, a press-mounting machine connecting plate, a box connecting plate, an oil filling hole fastening bolt, a countersunk head connecting bolt, a box assembly upper body, an auxiliary oil cylinder body in the box assembly, an auxiliary oil cylinder body pressure head buffer block, an auxiliary oil cylinder body pressure head, a main oil cylinder body in the box assembly, a main oil cylinder body pressure head buffer block, a main oil cylinder body pressure head and a box assembly lower body; the hub bearing and the hub bolt which replace the existing assembling means in use need a process of press fitting twice, can be directly formed by press fitting once, improves the production efficiency and the assembling reliability, has simple design principle and powerful functions, adopts the bolt to connect main components, is convenient to install, is convenient to use and has low manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of mechanical assembly, in particular to a multi-pressure-head self-balancing hydraulic system which can be widely used for press mounting of bearings and wheel bolts during sub-assembly of wheel hub assemblies of all models of axles.
Background
With the development of the automobile industry, the requirement on the assembly quality of an axle is higher and higher, and particularly, the rigidity and the precision of a high-speed rotating part such as a hub are important, the driving experience is involved, and the safety is further related, so that the importance is brought to whether a hub bearing and a wheel bolt are assembled in place; in the field of axle assembly, a work station division mode is also used at present, namely, a bearing is pressed in place firstly, each bolt is pressed in place, a general wheel is provided with 10 bolts, so that 11 times of pressing are needed in total, a wheel hub needs to be continuously moved, and some enterprises press all the bolts at one time, so that all the bolts cannot be pressed in place completely, the reliability of assembly and the feasibility of the process cannot be ensured, the situation that part of the bolts are loosened after the novel vehicle is used for a period of time after the novel vehicle is put on the road, and the risk that the wheels of the vehicle are shaken or even fall off is caused. The failure rate after sale and the potential safety hazard of the vehicle are greatly improved.
SUMMERY OF THE UTILITY MODEL
The present invention is to overcome the above disadvantages of the prior art and to provide a multi-head self-balancing hydraulic system.
The technical scheme provided by the utility model is as follows: a multi-pressure-head self-balancing hydraulic system comprises a press-mounting machine connecting plate, wherein press-mounting machine connecting bolt holes are drilled in the press-mounting machine connecting plate; a box body connecting plate is fixed on the press-mounting machine connecting plate; the device is characterized in that the box body connecting plate is fixedly connected with an upper body of the box body assembly, a bolt hole for injecting oil is drilled on the upper body of the box body assembly, and the upper body of the box body assembly is connected with a lower body of the box body assembly through a countersunk head link bolt;
a main oil cylinder body in the box body assembly and two auxiliary oil cylinder bodies in the box body assembly are fixed in the lower body of the box body assembly; a main cylindrical through hole and two auxiliary cylindrical through holes are arranged on the lower body of the box body assembly, a cylindrical main oil cylinder body pressing head is arranged in the main cylindrical through hole, and cylindrical auxiliary oil cylinder body pressing heads are respectively arranged in the two auxiliary cylindrical through holes; an auxiliary oil cylinder body pressure head buffer block is arranged between the auxiliary oil cylinder body pressure head and the lower body of the box body assembly; a buffer block of the main oil cylinder body pressure head is arranged between the main oil cylinder body pressure head and the lower body of the box body assembly; the position of a main oil cylinder body in the box body assembly corresponds to the position of a main oil cylinder body pressure head, and the position of an auxiliary oil cylinder body in the box body assembly corresponds to the position of an auxiliary oil cylinder body pressure head.
Preferably, the main oil cylinder body in the box body assembly and the auxiliary oil cylinder body in the box body assembly are respectively cylinders and are respectively fixed in a cylindrical groove in the lower body of the box body assembly, and the main oil cylinder body and the auxiliary oil cylinder body are in interference fit.
Preferably, the master cylinder body pressure head buffer block is a cylinder, the outer diameter of the master cylinder body pressure head buffer block is in interference fit with the inner wall of a master cylinder body in the box assembly, the inner diameter of the master cylinder body pressure head buffer block is in small clearance fit with the outer diameter of the cylinder of a master cylinder body pressure head, and the master cylinder body pressure head buffer block plays a role in buffering and guiding the master cylinder body pressure head in use.
Preferably, supplementary hydro-cylinder body pressure head buffer block be the cylinder, supplementary hydro-cylinder body inner wall interference fit in supplementary hydro-cylinder body pressure head buffer block external diameter and the box closes the piece, the little clearance fit of cylinder external diameter of supplementary hydro-cylinder body pressure head buffer block internal diameter and supplementary hydro-cylinder body pressure head, supplementary hydro-cylinder body pressure head buffer block plays the effect of buffering and direction to supplementary hydro-cylinder body pressure head in use.
Preferably, the main oil cylinder body pressure head and the auxiliary oil cylinder body pressure head are stepped cylinders, the tail part of each stepped cylinder is large in diameter, a groove is machined in the position of the tail part cylinder, and the oil cylinder body pressure head O-shaped ring seal is arranged in the groove.
The utility model has the beneficial effects that:
1. the principle is simple, and the function is strong;
2. the problem that the hub bearing and the hub bolt need to be pressed and mounted twice in the existing assembly process, and the hub bearing and the hub bolt can be successfully pressed and mounted once is solved;
3. the main components are connected by bolts, so that the assembly, disassembly and subsequent maintenance are facilitated;
4. the use is convenient, the press fitting is carried out at one time, the manufacturing cost is greatly reduced, and the feasibility of the process is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the working state of the present invention.
In the figure: 1 pressure equipment machine connecting bolt hole, 2 pressure equipment machine connecting plates, 3 box connecting plates, 4 oil filler point fastening bolt, 5 countersunk head link bolt, 6 box closes the piece upper part of the body, 7 box closes the interior supplementary hydro-cylinder body of the piece, 8 supplementary hydro-cylinder body pressure head O type circle, 9 supplementary hydro-cylinder body pressure head buffer block, 10 supplementary hydro-cylinder body pressure heads, 11 box closes the interior main hydro-cylinder body of the piece, 12 main hydro-cylinder body pressure head O type circle, 13 main hydro-cylinder body pressure head buffer block, 14 main hydro-cylinder body pressure heads, 15 box closes the piece lower part of the body, 16 seal gasket, 17 hydraulic oil.
Detailed Description
For a better understanding and appreciation of the utility model, reference will now be made in detail to the following description taken in conjunction with the accompanying drawings.
As shown in fig. 1 and 2, a multi-pressure head self-balancing hydraulic system comprises a press machine connecting plate 2, wherein press machine connecting bolt holes 1 are drilled in the press machine connecting plate 2 and used for being in threaded connection with a press machine; welding a box body connecting plate 3 to a connecting plate 2 of a press-fitting machine through a welding process, and welding a box body assembly upper body 6 to the box body connecting plate 3 through the welding process; a bolt hole is drilled on the upper body 6 of the box body assembly part for injecting oil, and the box body assembly part is fastened by an oil injection hole fastening bolt 4 after the oil injection is finished; the upper box body assembly body 6 is drilled with bolt holes, and the upper box body assembly body 6, the sealing gasket 16 and the lower box body assembly body 15 are fastened by countersunk fastening bolts 5;
processing the auxiliary oil cylinder body 7 in the box body assembly into a cylinder, welding the cylinder into a cylindrical groove in the lower body 15 of the box body assembly through a welding process, wherein the cylindrical groove in the lower body 15 of the box body assembly is in interference fit with the auxiliary oil cylinder body 7 in the box body assembly;
the auxiliary oil cylinder body pressure head 10 is processed into a stepped cylinder, the diameter of the tail part is larger, and a groove is processed at the position of the tail part cylinder and used for being connected with an O-shaped ring 8 of the auxiliary oil cylinder body pressure head, so that the sealing effect is realized; an auxiliary oil cylinder body pressure head buffer block 9 is arranged between the lower end of an auxiliary oil cylinder body pressure head 10 and a lower body 15 of a box body assembly, the auxiliary oil cylinder body pressure head buffer block 9 is processed into a cylinder, the outer diameter of the auxiliary oil cylinder body pressure head buffer block 9 is in interference fit with the inner wall of an auxiliary oil cylinder body 7 in the box body assembly, the inner diameter of the auxiliary oil cylinder body pressure head buffer block 9 is in small clearance fit with the position of the lower cylinder body of the auxiliary oil cylinder body pressure head 10, and the auxiliary oil cylinder body pressure head buffer block 9 plays roles in buffering and guiding the auxiliary oil cylinder body pressure head 10 in use;
a main cylindrical through hole and two auxiliary cylindrical through holes are processed on the lower body 15 of the box body assembly, the main cylindrical through hole of the lower body 15 of the box body assembly is in small clearance fit with the cylinder of the pressure head 14 of the main oil cylinder body, and the auxiliary cylindrical through hole of the lower body of the box body assembly is in small clearance fit with the cylinder of the pressure head 10 of the auxiliary oil cylinder body; but the matching surfaces are all ground to improve the smoothness of the contact surfaces;
the main oil cylinder body 11 in the box body assembly is processed into a cylinder and is welded into a cylindrical groove in the lower body 15 of the box body assembly through a welding process, and the cylindrical groove in the lower body 15 of the box body assembly is in interference fit with the main oil cylinder body 11 in the box body assembly;
the main oil cylinder body pressure head 14 is processed into a stepped cylinder, the diameter of the tail part of the stepped cylinder is larger, and a groove is processed at the position of the tail part cylinder and used for being connected with the main oil cylinder body pressure head O-shaped ring 12 to realize the sealing effect; a main oil cylinder body pressing head buffer block 13 is arranged between the lower end of a main oil cylinder body pressing head 14 and a box body assembly lower body 15, the main oil cylinder body pressing head buffer block 13 is processed into a cylinder, the outer diameter of the main oil cylinder body pressing head buffer block 13 is in interference fit with the inner wall of a main oil cylinder body 11 in the box body assembly, the inner diameter of the main oil cylinder body pressing head buffer block 13 is in small clearance fit with the position of the cylinder under the main oil cylinder body pressing head 14, and the main oil cylinder body pressing head buffer block 13 plays a role in buffering and guiding the main oil cylinder body pressing head 14 in use;
when the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 extend outwards to the limit positions, the hydraulic oil 17 is fully filled;
the connecting surface in the whole hydraulic system needs to be ground, so that the smoothness of the contact surface is improved.
When the multi-pressure-head self-balancing hydraulic system is used, the hydraulic system is firstly installed in a hydraulic machine through a press-mounting machine connecting bolt hole 1 to form rigid connection between the whole hydraulic system and the press-mounting machine; secondly, a process designer is required to design a related press fitting tool according to the sizes of the internal threads of the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 in the multi-pressure-head self-balancing hydraulic system, and the press fitting tool is installed at the positions of the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 in a thread fit manner; the tooling designed by the process designer should simultaneously conform to the size of the corresponding press-fitting product;
after the installation is finished, the wheel hub is placed on a workbench below the hydraulic press, the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 are located at limit positions when oil is injected and pressed, the press-mounting machine is started, the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 are in indirect contact with parts through a process design tool, pressure imbalance at the positions of the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 can be generated after the press-mounting machine presses the parts, the unbalanced pressure can be finely adjusted through internal hydraulic oil, pressure balance at the positions of the auxiliary oil cylinder body pressure head 10 and the main oil cylinder body pressure head 14 is finally realized, and finally parts needing to be pressed are pressed in place through balanced pressure.
It should be understood that technical features not described in detail in the specification belong to the prior art. Although the present invention has been described with respect to the above embodiments, the above embodiments are merely illustrative and not restrictive, and those skilled in the art can now appreciate that many more modifications can be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (5)
1. A multi-pressure-head self-balancing hydraulic system comprises a press-mounting machine connecting plate (2), wherein press-mounting machine connecting bolt holes (1) are drilled in the press-mounting machine connecting plate (2); a box body connecting plate (3) is fixed on the press-mounting machine connecting plate (2); the device is characterized in that a box body assembly upper body (6) is fixedly connected to the box body connecting plate (3), a bolt hole for injecting oil is drilled in the box body assembly upper body (6), and the box body assembly upper body (6) and the box body assembly lower body (15) are connected together through a countersunk head connecting bolt (5);
1 main oil cylinder body (11) and two auxiliary oil cylinder bodies (7) in the box body assembly are fixed in the lower body (15) of the box body assembly; a main cylindrical through hole and two auxiliary cylindrical through holes are arranged on the lower body (15) of the box body assembly, a cylindrical main oil cylinder body pressure head (14) is arranged in the main cylindrical through hole, and cylindrical auxiliary oil cylinder body pressure heads (10) are respectively arranged in the two auxiliary cylindrical through holes; an auxiliary oil cylinder body pressure head buffer block (9) is arranged between the auxiliary oil cylinder body pressure head (10) and the lower body (15) of the box body assembly; a main oil cylinder body pressure head buffer block (13) is arranged between the main oil cylinder body pressure head (14) and the box body assembly lower body (15); the position of a main oil cylinder body (11) in the box body assembly corresponds to the position of a main oil cylinder body pressure head (14), and the position of an auxiliary oil cylinder body (7) in the box body assembly corresponds to the position of an auxiliary oil cylinder body pressure head (10).
2. The multi-pressure head self-balancing hydraulic system of claim 1, wherein the main cylinder (11) and the auxiliary cylinder (7) are cylinders fixed in the lower body (15) of the casing assembly and are in interference fit with each other.
3. The multi-pressure head self-balancing hydraulic system according to claim 1, wherein the master cylinder pressure head buffer block (13) is a cylinder, the outer diameter of the master cylinder pressure head buffer block (13) is in interference fit with the inner wall of the master cylinder body (11) in the box assembly, the inner diameter of the master cylinder pressure head buffer block (13) is in small clearance fit with the outer diameter of the cylinder of the master cylinder body pressure head (14), and the master cylinder pressure head buffer block (13) plays a role in buffering and guiding the master cylinder pressure head (14) in use.
4. The multi-pressure head self-balancing hydraulic system as claimed in claim 1, wherein the auxiliary cylinder body pressure head buffer block (9) is a cylinder, the outer diameter of the auxiliary cylinder body pressure head buffer block (9) is in interference fit with the inner wall of the auxiliary cylinder body (7) in the box assembly, the inner diameter of the auxiliary cylinder body pressure head buffer block (9) is in small clearance fit with the outer diameter of the cylinder of the auxiliary cylinder body pressure head (10), and the auxiliary cylinder body pressure head buffer block (9) plays a role in buffering and guiding the auxiliary cylinder body pressure head (10) during use.
5. The multi-pressure-head self-balancing hydraulic system as claimed in claim 1, wherein the main oil cylinder body pressure head (14) and the auxiliary oil cylinder body pressure head (10) are stepped cylinders, the tail part of each stepped cylinder is larger in diameter, a groove is formed in the position of the tail cylinder, and an O-shaped ring seal of the oil cylinder body pressure head is arranged in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508278.XU CN217019304U (en) | 2022-03-10 | 2022-03-10 | Multi-pressure head self-balancing hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508278.XU CN217019304U (en) | 2022-03-10 | 2022-03-10 | Multi-pressure head self-balancing hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217019304U true CN217019304U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220508278.XU Active CN217019304U (en) | 2022-03-10 | 2022-03-10 | Multi-pressure head self-balancing hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217019304U (en) |
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2022
- 2022-03-10 CN CN202220508278.XU patent/CN217019304U/en active Active
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