Hydraulic rotary pressing device special for heavy steering gear shell

Abstract

The utility model relates to a special hydraulic rotary pressing device for a heavy steering gear shell, which comprises a cylinder body, a nut, a pressing block, a piston head, a piston rod, a rotary guide part, a steel ball, a path groove and a positioning block, a piston groove is designed in the middle of the lower end of the cylinder body, the piston head is slidably mounted in the piston groove, and the piston rod is mounted at the upper end of the piston head. The upper end of the piston rod slidably penetrates through the bottom of the upper end of a piston groove of the cylinder body, a pressing block is clamped at the upper end of the piston rod, the outer side of the pressing block is screwed at the end of the piston rod through a nut to be fixed, a plurality of positioning blocks are installed on the periphery of the upper end of the cylinder body, and the pressing block comprises a round body and trapezoid pressing heads. The device has the advantages of being ingenious in design, reasonable and compact in structure, high in universality, high in positioning accuracy, good in rigidity and capable of saving space and meeting production and machining requirements for parts of the type.

Description

Technical Field

[0001] The utility model relates to the field of steering gear housing processing, and particularly relates to a hydraulic rotary pressing device special for heavy-duty steering gear housings. Background Art

[0002] As an important component of the steering system, the design, material selection, manufacturing process, and quality control of heavy-duty steering gear housings need to meet high-standard requirements. Whether using high-strength cast iron or aluminum alloy, the ultimate goal is to ensure the stability and durability of the steering system and meet the usage requirements of heavy-duty vehicles under various working conditions. The manufacturing of heavy-duty steering gear housings usually adopts the casting process, pouring molten metal into shape through precise molds. Subsequently, cooling, cleaning, and machining are carried out to ensure that the housing has precise dimensions and good surface finish. Due to the increasing requirements for the processing accuracy and efficiency of heavy-duty steering gear housings in the machining industry in recent years, and also with the continuous increase in labor costs, the traditional positioning and clamping methods have high labor intensity, low efficiency in loading and unloading parts, and the clamping force cannot meet the positioning requirements. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model proposes a hydraulic rotary pressing device special for heavy-duty steering gear housings, which is ingeniously designed, reasonably and compactly structured, and meets the production and processing requirements of such products.

[0004] The technical solution of the utility model:

[0005] A hydraulic rotary pressing device dedicated to a heavy-duty steering gear housing. The heavy-duty steering gear housing includes a vertical flow channel and a horizontal flow channel. The upper and lower ends of the vertical flow channel are respectively connected to the upper and lower end faces. One end of the horizontal flow channel is connected to its corresponding end face, and the horizontal flow channel is connected to the vertical flow channel near the middle position; a plurality of positioning grooves are provided on the outer circumference of the lower port of the vertical flow channel, and a boss is provided on the inner side of the lower port of the vertical flow channel corresponding to the upper part of the positioning groove; It includes a cylinder block, a nut, a pressing block, a piston head, a piston rod, a rotary guiding part, steel balls, path grooves, and positioning blocks. A piston groove is designed in the middle of the lower end of the cylinder block. The piston head is slidably installed in the piston groove. The upper end of the piston head is installed with a piston rod. The upper end of the piston rod slidably penetrates the upper bottom of the piston groove of the cylinder block. A pressing block is clamped at the upper end of the piston rod, and the outer side of the pressing block is fixed by screwing the nut at the end of the piston rod. A plurality of positioning blocks are installed around the upper end of the cylinder block. The pressing block includes a circular main body and a trapezoidal pressing head. A plurality of trapezoidal pressing heads are designed around the circular main body; A circular groove is designed in the middle of the lower end of the piston head. A plurality of semi-cylindrical grooves are provided on the inner circumference of the lower port of the circular groove, and the bottom of the semi-cylindrical groove is a hemispherical bottom; The rotary guiding part includes a fixing plate and a vertical shaft. The vertical shaft is installed in the middle of the upper end of the fixing plate, and a plurality of path grooves are designed on the outer side of the vertical shaft; The vertical shaft of the rotary guiding part is slidably located in the circular groove of the piston head. Half of the steel ball is located in the semi-cylindrical groove, and the other half of the steel ball is located in the corresponding path groove on the rotary guiding part; The path groove includes an upper vertical semi-circular groove, a lower vertical semi-circular groove, and a spiral semi-circular groove. The lower end of the upper vertical semi-circular groove is connected to the lower vertical semi-circular groove through the spiral semi-circular groove; The upper end of the upper vertical semi-circular groove is connected to the upper end face of the vertical shaft; The positioning blocks are correspondingly supported in the positioning grooves of the heavy-duty steering gear housing. When the trapezoidal pressing head of the pressing block extends into the vertical flow channel, it is staggered from the boss of the heavy-duty steering gear housing. When the piston rod descends and drives the pressing block to press down together, it will rotate a certain angle, and the trapezoidal pressing head of the pressing block correspondingly presses on the boss. An annular groove is also designed on the outer side of the mouth of the circular groove 42 in the middle of the lower end of the piston head. An annular pressing block is installed in the annular groove, and the inner side of the upper end of the annular pressing block blocks the lower port of the semi-cylindrical groove.

[0006] The positioning groove is a V-shaped groove, and the positioning block is an isosceles trapezoidal block with a narrow upper part and a wide lower part. A plurality of serrated teeth are designed on the inclined surfaces on both sides of the upper end of the positioning block.

[0007] There are three positioning grooves, three bosses, three positioning blocks, three steel balls, three path grooves, three semi-cylindrical grooves, and three trapezoidal pressing heads of the pressing block.

[0008] A hemispherical groove is designed at the upper end of the pressing block, and the lower end of the nut is designed as a downward convex hemispherical protrusion. The nut is locked and matched with the hemispherical groove of the pressing block through the downward convex hemispherical protrusion.

[0009] There are also three threaded holes designed around the pressing block, and positioning screws are rotatably installed in the threaded holes. After the positioning screws are screwed into the threaded holes, they press against the outer side of the upper end of the piston rod.

[0010] The lower end of the cylinder block is sealed and installed on the hydraulic workbench of the machine tool machining center. A horizontal oil passage and a vertical oil passage are designed inside one side of the cylinder block. The outer side of the horizontal oil passage is connected to the outer side surface of the cylinder block, the inner side of the horizontal oil passage is connected to the upper end of the piston groove, the upper end of the vertical oil passage is connected to the position near the mouth of the horizontal oil passage, and the lower end of the horizontal oil passage is connected to the lower end surface of the cylinder block. There are two hydraulic oil holes designed on the hydraulic workbench. One hydraulic oil hole is connected to the lower end of the horizontal oil passage, and the other hydraulic oil hole is connected to the mouth of the piston groove; the fixing plate of the rotary guiding part is fixed on the hydraulic workbench.

[0011] The advantages of the present utility model are ingenious design, reasonable and compact structure, strong versatility for this type of parts, high positioning accuracy, good rigidity, space saving, and meeting the production and processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional schematic diagram of the present utility model.

[0013] Figure 2 is a partial sectional schematic diagram of the present utility model.

[0014] Figure 3 is a top view schematic diagram of the present utility model.

[0015] Figure 4 is a bottom view schematic diagram of the present utility model.

[0016] Figure 5 is a schematic diagram of the rotary guiding part of the present utility model.

[0017] Figure 6 is a three-dimensional schematic of the heavy-duty steering gear housing of the present utility model Figure 1 .

[0018] Figure 7 is a three-dimensional schematic of the heavy-duty steering gear housing of the present utility model Figure 2 .

[0019] Figure 8 is Figure 6 the top view sectional schematic diagram in

[0020] Figure 9 is a schematic diagram of the heavy-duty steering gear housing (blank) of the present utility model after being clamped. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Refer to the attached Figure 1-9, a hydraulic rotary pressing device dedicated to a heavy-duty steering gear housing. The heavy-duty steering gear housing includes a vertical flow channel 101 and a horizontal flow channel 102. The upper and lower ends of the vertical flow channel 101 are respectively connected to the upper and lower end faces. One end of the horizontal flow channel 102 is connected to its corresponding end face, and the horizontal flow channel 102 is connected to the vertical flow channel 101 near the middle position; a plurality of positioning grooves 103 are provided on the outer circumference of the lower port of the vertical flow channel 101, and a boss 104 is provided on the inner side of the lower port of the vertical flow channel 101 corresponding to the upper part of the positioning groove 103; it includes a cylinder block 1, a nut 2, a pressing block 3, a piston head 4, a piston rod 5, a rotary guiding part 6, steel balls 7, path grooves 8, and a positioning block 9. A piston groove 10 is designed in the middle of the lower end of the cylinder block 1. The piston head 4 is slidably installed in the piston groove 10. The upper end of the piston head 4 is installed with a piston rod 5. The upper end of the piston rod 5 slidably penetrates the upper bottom of the piston groove 10 of the cylinder block 1. A pressing block 3 is clamped at the upper end of the piston rod 5, and the outer side of the pressing block 3 is fixed by screwing the nut 2 at the end of the piston rod 5. A plurality of positioning blocks 9 are installed around the upper end of the cylinder block 1. The pressing block 3 includes a circular main body and a trapezoidal pressing head 31. A plurality of trapezoidal pressing heads 31 are designed around the circular main body; a circular groove 42 is designed in the middle of the lower end of the piston head 4. A plurality of semi-cylindrical grooves are provided on the inner circumference of the lower port of the circular groove 42, and the bottom of the semi-cylindrical grooves is a hemispherical bottom; the rotary guiding part 6 includes a fixing plate and a vertical shaft 61. The vertical shaft 61 is installed in the middle of the upper end of the fixing plate, and a plurality of path grooves 8 are designed on the outer side of the vertical shaft 61; the vertical shaft 61 of the rotary guiding part 6 is slidably located in the circular groove 42 of the piston head 4. Half of the steel ball 7 is located in the semi-cylindrical groove, and the other half of the steel ball 7 is located in the corresponding path groove 8 on the rotary guiding part 6; the path groove 8 includes an upper vertical semi-circular groove, a lower vertical semi-circular groove, and a spiral semi-circular groove. The lower end of the upper vertical semi-circular groove is connected to the lower vertical semi-circular groove through the spiral semi-circular groove; the upper end of the upper vertical semi-circular groove is connected to the upper end face of the vertical shaft 61; the positioning block 9 is correspondingly supported in the positioning groove 103 of the heavy-duty steering gear housing. When the trapezoidal pressing head 31 of the pressing block 3 extends into the vertical flow channel 101, it is staggered from the boss 104 of the heavy-duty steering gear housing. When the piston rod 5 descends and drives the pressing block 3 to press down together, it will rotate a certain angle, and the trapezoidal pressing head 31 of the pressing block 3 is correspondingly pressed on the boss 104. An annular groove is also designed on the outer side of the mouth of the circular groove 42 in the middle of the lower end of the piston head 4. An annular pressing block 41 is installed in the annular groove. The inner side of the upper end of the annular pressing block 41 blocks the lower port of the semi-cylindrical groove. The design of the annular pressing block prevents the steel balls from falling off, which is a safety design.

[0022] The positioning groove 103 is a V-shaped groove, and the positioning block 9 is an isosceles trapezoidal block with a narrow upper part and a wide lower part. A plurality of serrated teeth are designed on the inclined surfaces on both sides of the upper end of the positioning block 9. This design ensures stable positioning.

[0023] There are three positioning grooves 103 designed, three bosses 104, three positioning blocks 9, three steel balls 7, three path grooves 8, and three semi-cylindrical grooves. The trapezoidal indenters 31 of the pressing block 3 are designed to be three. All are designed to be three, aiming at the structural design and cooperation of the heavy-duty steering gear housing itself, making the guiding action, positioning, and clamping more accurate and stable.

[0024] A hemispherical groove is designed at the upper end of the pressing block 3, and the lower end of the nut 2 is designed as a downward convex hemispherical protrusion. The nut 2 is locked and fitted with the hemispherical groove of the pressing block 3 through the downward convex hemispherical protrusion. This design ensures the effective locking and fitting between the nut and the upper end of the pressing block. An annular step is designed at the upper end of the piston rod. The pressing block just fits over the annular step. The upper part of the piston rod at the annular step is designed as a threaded rod for screwing into the nut. This is the prior art and is simply described in the present utility model.

[0025] Three threaded holes are also designed around the pressing block 3. Positioning screws are rotatably installed in the threaded holes. After the positioning screws are screwed into the threaded holes, they press against the outer side of the upper end of the piston rod 5. Corresponding positioning grooves are also designed on the piston rod. The positioning screws just press against the corresponding positioning grooves on the corresponding side. Ensure that the angle design of the indenter of the pressing block is consistent with the lower path groove. In the present utility model, three path grooves are designed, and the indenter can be misaligned or in the upper and lower positions of the boss position by rotating 60 degrees.

[0026] The lower end of the cylinder block 1 is hermetically installed on the hydraulic workbench of the machine tool processing center. A horizontal oil passage and a vertical oil passage are designed inside one side of the cylinder block 1. The outer side of the horizontal oil passage is connected to the outer side surface of the cylinder block 1, the inner side of the horizontal oil passage is connected to the upper end of the piston groove 10, the upper end of the vertical oil passage is connected to the position near the mouth of the horizontal oil passage, the lower end of the horizontal oil passage is connected to the lower end surface of the cylinder block 1. Two hydraulic oil holes are designed on the hydraulic workbench. One hydraulic oil hole is connected to the lower end of the horizontal oil passage, and the other hydraulic oil hole is connected to the mouth of the piston groove 10; The fixing plate of the rotary guiding part 6 is fixed on the hydraulic workbench. The port where the outer side of the horizontal oil passage is connected to the outside of the cylinder block is a process port, which is usually sealed by a plug. A sealing fit is also adopted between the cylinder block and the hydraulic workbench, between the upper end of the piston rod and the cylinder block, and between the piston head and the piston groove inside the cylinder block. Usually, an O-ring is used for sealing. This is the prior art and is simply described in the present utility model. As Figure 9 , in order to facilitate the placement of the heavy-duty steering gear housing on the hydraulic workbench, a positioning column is installed. The positioning column is exactly located in the V-shaped groove outside the heavy-duty steering gear housing. According to the structure of the heavy-duty steering gear housing itself, a directional positioning column for quick positioning is designed to assist the operator in quickly and conveniently placing the blank of the heavy-duty steering gear housing to be processed.

[0027] When the utility model is used, the product of the utility model is installed on the hydraulic working table, and the hydraulic working table at the lower end of the piston groove in the cylinder body starts to supply oil to the bottom of the piston head, pushing the piston head upward. During the upward movement of the piston head, under the action of the steel ball and the path groove, the piston head will move upward and rotate at a certain angle, and the pressure block will rotate and rise under the action of the piston rod. After it is in place, the vertical oil passage of the heavy-duty steering gear housing can be inserted from the pressure block. During the insertion process, the trapezoidal pressure head of the pressure block will stagger the boss in the vertical oil passage of the heavy-duty steering gear housing, and the positioning groove of the heavy-duty steering gear housing will be buckled with the positioning block. At the same time, the hydraulic workbench supplies oil to the top of the piston head through the vertical oil channel and the horizontal oil channel, and at the same time the hydraulic oil under the piston head is depressurized to control the downward movement of the piston head. The piston head then rotates in the opposite direction under the action of the steel ball and the path groove, and rotates the pressure block above it together with the set angle, so that the trapezoidal pressure head of the pressure block is pressed on the boss in the vertical oil channel of the corresponding heavy-duty steering gear housing, so as to perform fast, accurate and effective clamping. In this way, the internal clamping of the heavy-duty steering gear housing can be completed without interfering with the processing operation on the outside of the heavy-duty steering gear housing, which is safe and reliable. Disassembly can be done by simply reversing the operation.

Claims

1. A hydraulic rotary pressing device dedicated to a heavy-duty steering gear housing. The heavy-duty steering gear housing includes a vertical flow channel and a horizontal flow channel. The upper and lower ends of the vertical flow channel are respectively connected to the upper and lower end faces. One end of the horizontal flow channel is connected to its corresponding end face, and the middle position of the horizontal flow channel is connected to the vertical flow channel. A plurality of positioning grooves are provided on the outer circumference of the lower port of the vertical flow channel, and a boss is provided on the inner side of the lower port of the vertical flow channel corresponding to the upper part of the positioning groove. It is characterized in that, It includes a cylinder block, a nut, a pressing block, a piston head, a piston rod, a rotary guiding part, steel balls, path grooves, and positioning blocks. In the middle of the lower end of the cylinder block, a piston groove is designed. The piston head is slidably installed in the piston groove. The upper end of the piston head is installed with a piston rod. The upper end of the piston rod slidably penetrates through the upper bottom of the piston groove of the cylinder block. A pressing block is clamped at the upper end of the piston rod, and the outer side of the pressing block is fixed by screwing a nut at the end of the piston rod. A number of positioning blocks are installed around the upper end of the cylinder block. The pressing block includes a circular main body and a trapezoidal pressing head. A number of trapezoidal pressing heads are designed around the circular main body; in the middle of the lower end of the piston head, a circular groove is designed. A number of semi-cylindrical grooves are arranged on the inner side of the lower port of the circular groove, and the bottom of the semi-cylindrical groove is a hemispherical bottom; the rotary guiding part includes a fixing plate and a vertical shaft. In the middle of the upper end of the fixing plate, a vertical shaft is installed. A number of path grooves are designed on the outer side of the vertical shaft; the vertical shaft of the rotary guiding part is slidably located in the circular groove of the piston head. Half of the steel ball is located in the semi-cylindrical groove, and the other half of the steel ball is located in the corresponding path groove on the rotary guiding part; the path groove includes an upper vertical semi-circular groove, a lower vertical semi-circular groove, and a spiral semi-circular groove. The lower end of the upper vertical semi-circular groove is connected to the lower vertical semi-circular groove through the spiral semi-circular groove; the upper end of the upper vertical semi-circular groove is connected to the upper end face of the vertical shaft; the positioning blocks are correspondingly supported in the positioning grooves of the heavy-duty steering gear housing. When the trapezoidal pressing head of the pressing block extends into the vertical flow channel, it is staggered from the boss of the heavy-duty steering gear housing. When the piston rod descends and presses the pressing block down together, it will rotate a certain angle, and the trapezoidal pressing head of the pressing block correspondingly presses on the boss; on the outer side of the circular groove opening at the middle of the lower end of the piston head, an annular groove is also designed. An annular pressing block is installed in the annular groove. The inner side of the upper end of the annular pressing block covers the lower port of the semi-cylindrical groove.

2. The hydraulic rotary pressing device dedicated to a heavy-duty steering gear housing according to claim 1, characterized in that, The positioning groove is a V-shaped groove, and the positioning block is an isosceles trapezoidal block with a narrow upper part and a wide lower part. A number of serrated teeth are designed on the inclined surfaces on both sides of the upper end of the positioning block.

3. The hydraulic rotary pressing device special for a heavy-duty steering gear housing according to claim 1, characterized in that There are three positioning grooves, three bosses, three positioning blocks, three steel balls, three path grooves, three semi-cylindrical grooves, and three trapezoidal pressing heads designed on the pressing block.

4. The hydraulic rotary pressing device special for a heavy-duty steering gear housing according to claim 1, characterized in that, A hemispherical groove is designed at the upper end of the pressing block, and the lower end of the nut is designed as a downward convex hemispherical protrusion. The nut is locked and matched with the hemispherical groove of the pressing block through the downward convex hemispherical protrusion.

5. The hydraulic rotary pressing device special for a heavy-duty steering gear housing according to claim 1, wherein, Three threaded holes are also designed around the pressing block. Positioning screws are rotatably installed in the threaded holes. After the positioning screws are screwed into the threaded holes, they press against the outer side of the upper end of the piston rod.

6. The hydraulic rotary pressing device special for a heavy-duty steering gear housing according to claim 1, characterized in that, The lower end of the cylinder block is sealed and installed on the hydraulic workbench of the machine tool processing center. A horizontal oil passage and a vertical oil passage are designed inside one side of the cylinder block. The outer side of the horizontal oil passage is connected to the outer side of the cylinder block, the inner side of the horizontal oil passage is connected to the upper end of the piston groove, the upper end of the vertical oil passage is connected to the position near the mouth of the horizontal oil passage, the lower end of the horizontal oil passage is connected to the lower end face of the cylinder block. There are two hydraulic oil holes designed on the hydraulic workbench. One hydraulic oil hole is connected to the lower end of the horizontal oil passage, and the other hydraulic oil hole is connected to the mouth of the piston groove; the fixing plate of the rotary guiding part is fixed on the hydraulic workbench.

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