Bidirectional buffering high-flow full-hydraulic steering gear

Abstract

The utility model relates to the technical field of steering gears, and discloses a bidirectional buffering large-flow full-hydraulic steering gear which comprises a shell barrel, a locking block is fixedly installed at one end of the shell barrel, a sealing flange is fixed at the other end of the shell barrel, a valve body is coaxially arranged in the shell barrel, shell bases are arranged at the two ends perpendicular to the axis direction of the shell barrel, and the shell bases and the shell barrel are of an integrated structure. The shell seats at the two ends are each provided with four oil channels communicated with the interior of the shell barrel, the four oil channels comprise two oil inlets and two oil outlets, bidirectional oil feeding is adopted in the structure, hydraulic fluid can enter the steering gear from the two oil inlets at the same time, and therefore the supply amount of the fluid is increased, higher flow and steering torque can be provided, and the steering efficiency is improved. The steering gear can adapt to larger load and steering requirements, meanwhile, the two-way oil inlet structure allows hydraulic fluid to enter the steering gear from two directions, in this way, the transmission speed of the hydraulic fluid can be increased, and steering sensitivity and rapidness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steering gears, in particular to a bidirectional buffer large-flow full-hydraulic steering gear. Background Art

[0002] The fully hydraulic steering gear is a steering control device that uses hydraulic pressure to achieve steering operation. It is widely used in various vehicles and mechanical equipment, such as automobiles, construction machinery, agricultural machinery, etc. The working principle of the fully hydraulic steering gear is to drive the hydraulic cylinder through the hydraulic pressure generated by the hydraulic pump, so that the steering mechanism generates a steering torque, thereby realizing the steering operation. The steering torque of the fully hydraulic steering gear can be adjusted as needed. By controlling the output pressure and flow of the hydraulic pump, the steering torque can be adjusted to adapt to different driving environments and operating requirements. This makes the fully hydraulic steering gear highly flexible and adaptable. The steering operation of the fully hydraulic steering gear is relatively light and flexible. Due to the fast transmission speed of the hydraulic force, the steering response is fast and the operation is sensitive, so the driver can easily perform steering control. This is very important for application scenarios that require frequent steering, such as construction operations of construction machinery and field operations of agricultural machinery. In addition, the fully hydraulic steering gear has good reliability and stability. The core components such as the hydraulic pump and hydraulic cylinder in the hydraulic system are made of high-quality materials and manufacturing processes, have strong wear resistance and pressure resistance, and can work stably for a long time. Moreover, the structure of the hydraulic system is relatively simple, which reduces the possibility of failure and reduces maintenance costs. The fully hydraulic steering gear also has a large load-bearing capacity and adaptability. It can withstand large steering torque and pressure loads and is suitable for various heavy vehicles and mechanical equipment. Moreover, due to the high reliability of the hydraulic system, it can work normally in harsh working environments, such as high temperature, low temperature, humidity and other conditions.

[0003] The traditional fully hydraulic steering gear adopts a one-way oil inlet method, which has certain limitations in terms of steering torque. Due to the low one-way flow rate, the hydraulic pressure generated by the hydraulic pump is relatively small, so the steering torque is also small. In some application scenarios that require a large steering torque, this one-way steering gear may not meet the needs. And because of the low one-way oil inlet flow rate, the steering response speed of the one-way fully hydraulic steering gear is relatively slow. When the driver performs steering control, it takes a certain amount of time to feel the response of the steering gear. This may affect the driving accuracy and smoothness of operation. Moreover, the one-way steering gear is usually suitable for application scenarios with a smaller steering angle range. In the case of a larger steering angle, the steering gear may not be able to provide sufficient steering torque and speed due to limited flow. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the utility model provides a bidirectional buffered large-flow fully hydraulic steering gear, which has the advantage of being able to adapt to heavier loads and higher steering requirements, provide stronger steering capabilities, and be able to transmit hydraulic pressure and steering torque more quickly, making steering operations more sensitive and rapid, and being able to provide a larger steering angle range. It solves the problem that the hydraulic pressure generated by the existing hydraulic pump is relatively small, which cannot meet the requirements in some application scenarios that require a larger steering torque, and the steering response speed is relatively slow and the turning angle is small.

[0006] (II) Technical solution

[0007] In order to enable the above-mentioned steering gear to adapt to heavier loads and higher steering requirements, provide stronger steering ability, transmit hydraulic pressure and steering torque faster, make steering operation more sensitive and rapid, and provide a larger steering angle range, the utility model provides the following technical solutions: a two-way buffered large-flow fully hydraulic steering gear, comprising a shell cylinder, a locking block is fixedly installed at one end of the shell cylinder, a sealing flange is fixed at the other end of the shell cylinder, a valve body is coaxially arranged in the shell cylinder, and shell seats are arranged at both ends perpendicular to the axial direction of the shell cylinder, the shell seat and the shell cylinder are an integral structure, and four oil passages connected to the inside of the shell cylinder are opened on the shell seats at both ends, wherein the four oil passages include two oil inlets and two oil outlets, and the four oil passages are arranged in an array along the central circumference of the shell seat.

[0008] Preferably, one end of the shell seat at both ends is used to control the left steering end, and the other end of the shell seat is used to control the right steering end.

[0009] Preferably, six or more locking bolts 1 are installed on the sealing flange, and four or more locking bolts 2 are provided on the locking block.

[0010] Preferably, the two oil inlets are arranged adjacent to each other, and the two oil outlets are arranged adjacent to each other.

[0011] Preferably, two or more fixing holes are provided on the shell seats at both ends.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a bidirectional buffer large flow full hydraulic steering gear, which has the following beneficial effects:

[0014] 1. The bidirectional buffered large-flow full-hydraulic steering gear uses a shell seat structure and an oil channel structure in combination. Compared with the traditional technical structure, this structure adopts a bidirectional oil inlet. The hydraulic fluid can enter the steering gear from two oil inlets at the same time, thereby increasing the fluid supply. This can provide a higher flow and steering torque, allowing the steering gear to adapt to greater loads and steering requirements. At the same time, the bidirectional oil inlet structure allows the hydraulic fluid to enter the steering gear from two directions, which can speed up the transmission speed of the hydraulic fluid. Therefore, the steering gear can respond more quickly to the operator's steering control and improve the sensitivity and rapidity of the steering.

[0015] 2. The bidirectional buffered large-flow fully hydraulic steering gear, through the coordinated use of the oil channel structure and the shell seat structure, compared with the traditional technical structure, this bidirectional oil inlet structure can balance the pressure distribution in the hydraulic system. When the hydraulic fluid enters from one direction, the oil inlet in the other direction is in a closed state. This can prevent the pressure in the hydraulic system from accumulating too high in one direction and maintain a balanced pressure distribution. At the same time, when the hydraulic fluid enters from one direction, the oil inlet in the other direction can play a buffering role. When the pressure in the hydraulic system changes, the existence of the oil inlet can absorb and slow down the pressure change and prevent a sudden increase or decrease in pressure. Through this bidirectional oil inlet structure, the hydraulic fluid can smoothly enter and flow out of the steering gear, reduce the occurrence of hydraulic shock, and protect the normal operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural top view of the bidirectional buffer large flow full hydraulic steering gear of the utility model;

[0017] Figure 2 This is a structural front view of the utility model bidirectional buffer large flow full hydraulic steering gear;

[0018] Figure 3 This is a structural side view of the utility model bidirectional buffer large flow full hydraulic steering gear;

[0019] Figure 4 It is a right schematic diagram of the three-dimensional structure of the utility model bidirectional buffer large flow full hydraulic steering gear;

[0020] Figure 5 It is a schematic diagram on the left side of the three-dimensional structure of the bidirectional buffer large-flow full-hydraulic steering gear of the utility model.

[0021] In the figure: 1-shell cylinder, 2-locking block, 3-sealing flange, 4-valve body, 5-shell seat, 6-oil channel, 7-locking bolt 1, 8-locking bolt 2, 9-fixing hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , a bidirectional buffered large flow full hydraulic steering gear comprises a shell barrel 1, a locking block 2 is fixedly installed at one end of the shell barrel 1, a sealing flange 3 is fixed at the other end of the shell barrel 1, a valve body 4 is coaxially arranged in the shell barrel 1, and shell seats 5 are arranged at both ends perpendicular to the axial direction of the shell barrel 1. The shell seat 5 and the shell barrel 1 are an integral structure. The purpose of arranging the shell seats 5 at both ends is to support and fix the valve body 4 and provide a connection for the oil passage 6. The shell seat 5 is connected to the shell barrel 1 as an integral structure, which can provide stable support and fixation to ensure that the valve body 4 will not loosen or shift when the steering gear is running. The valve body 4 is the core component of the steering gear, which includes valves and channels for controlling and regulating the hydraulic fluid. Therefore, stable support and fixation are very important to ensure the normal operation of the valve body 4. In addition, the four oil passages 6 on the shell seat 5 are connected to the inside of the shell barrel 1 to provide an inlet and outlet for the hydraulic fluid. The position and layout of these oil passages 6 should match the design of the valve body 4 to ensure that the hydraulic fluid can flow smoothly through the valve body 4 and realize the normal operation of the steering gear. The setting of the shell seat 5 can ensure that the connection between the oil channel 6 and the valve body 4 is stable and reliable, and is convenient for installation and maintenance. The purpose of opening four oil channels 6 connected to the inside of the shell tube 1 on the shell seats 5 at both ends is to achieve the entry and exit and balance of the hydraulic fluid. These four oil channels 6 include two oil inlets and two oil outlets. The oil inlet is used for the hydraulic fluid to enter the steering gear, and the oil outlet is used for the hydraulic fluid to flow out of the steering gear. Through such a setting, the steering gear can achieve bidirectional hydraulic flow. Among them, the opening of the oil channel 6 is arranged in an array along the central circumference of the shell seat 5. Such a layout can make the hydraulic fluid evenly distributed when entering and flowing out of the steering gear, reduce the sudden change of pressure and hydraulic shock, and improve the stability and reliability of the system. At the same time, these four oil channels 6 are connected to the inside of the shell tube 1, ensuring the smooth flow of the hydraulic fluid inside the steering gear. This is very important for the normal operation of the steering gear, because the hydraulic fluid needs to be controlled and regulated through the valve body 4 and other internal components.

[0024] See also Figure 1 , Figure 4 , Figure 5, one end of the shell seat 5 at both ends is used to control the left steering end, and the other end of the shell seat 5 is used to control the right steering end. The two oil inlets are arranged adjacently, and the two oil outlets are arranged adjacently. By arranging the left steering end and the right steering end on both sides, the flow paths of the hydraulic fluid inside the steering gear can be separated, and the hydraulic fluid can enter and exit through different oil passages 6, thereby realizing independent control of left and right steering. This can meet the needs of vehicles or mechanical equipment during different steering operations. In addition, the layout of the oil ports and oil passages 6 at the left steering end and the right steering end is also designed according to actual needs. The two oil inlets are arranged adjacently, which can facilitate the entry of the hydraulic fluid; the two oil outlets are arranged adjacently, which can facilitate the outflow of the hydraulic fluid. Such a layout can ensure the balanced flow of the hydraulic fluid inside the steering gear. Two or more fixing holes 9 are provided on the shell seats 5 at both ends. Six or more locking bolts 7 are installed on the sealing flange 3, and four or more locking bolts 8 are arranged on the locking block 2.

[0025] Working principle: The internal structure of the bidirectional buffered large-flow full-hydraulic steering gear is the same as that of the traditional full-hydraulic steering gear mechanism. The difference is that when the bidirectional buffered large-flow full-hydraulic steering gear is in use, its left steering end oil channel 6 and the right steering end oil channel 6 are symmetrically arranged, and its oil inlet and oil outlet are both two.

[0026] During use, the device is fixed by the fixing hole 9, and two left-steering oil inlet pipes are used to connect the two left-steering oil inlets respectively, two left-steering oil outlet pipes are used to connect the two left-steering oil outlets, two right-steering oil inlet pipes are used to connect the two right-steering oil inlets respectively, and two right-steering oil outlet pipes are used to connect the two right-steering oil outlets. When the steering gear is used, since the structure adopts two-way oil inlet, the hydraulic fluid can enter the steering gear from the two oil inlets at the same time, thereby increasing the supply of the fluid, which can provide a higher flow rate and steering torque, so that the steering gear can adapt to greater loads and steering requirements. At the same time, the two-way oil inlet structure allows the hydraulic fluid to enter the steering gear from two directions, which can speed up the transmission speed of the hydraulic fluid. Therefore, the steering gear can respond to the steering control of the driver more quickly, and improve the sensitivity and rapidity of the steering. And this two-way oil inlet structure can balance the pressure distribution in the hydraulic system. When the hydraulic fluid enters from one direction, the oil inlet in the other direction is in a closed state. This can prevent the pressure in the hydraulic system from accumulating too high in one direction and maintain a balanced distribution of pressure. At the same time, when the hydraulic fluid enters from one direction, the oil inlet in the other direction can play a buffering role. When the pressure in the hydraulic system changes, the presence of the oil inlet can absorb and slow down the pressure changes and prevent sudden increase or decrease in pressure. Through this two-way oil inlet structure, the hydraulic fluid can smoothly enter and flow out of the steering gear, reducing the occurrence of hydraulic shock and protecting the normal operation of the system.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bidirectional buffered large flow full hydraulic steering gear, comprising a shell barrel (1), a locking block (2) fixedly mounted on one end of the shell barrel (1), a sealing flange (3) fixedly mounted on the other end of the shell barrel (1), a valve body (4) coaxially arranged in the shell barrel (1), characterized in that: Shell seats (5) are arranged at both ends perpendicular to the axial direction of the shell cylinder (1); the shell seat (5) and the shell cylinder (1) are an integral structure; four oil passages (6) connected to the interior of the shell cylinder (1) are opened on the shell seats (5) at both ends, wherein the four oil passages (6) include two oil inlets and two oil outlets, and the four oil passages (6) are arranged in an array along the central circumference of the shell seat (5).

2. The bidirectional buffered large flow full hydraulic steering gear according to claim 1 is characterized in that: One end of the shell seat (5) at both ends is used to control the left steering end, and the other end of the shell seat (5) is used to control the right steering end.

3. The bidirectional buffered large flow full hydraulic steering gear according to claim 1 is characterized in that: Six or more locking bolts 1 (7) are installed on the sealing flange (3), and four or more locking bolts 2 (8) are arranged on the locking block (2).

4. The bidirectional buffered large flow full hydraulic steering gear according to claim 1 is characterized in that: The two oil inlets are arranged adjacent to each other, and the two oil outlets are arranged adjacent to each other.

5. The bidirectional buffered large flow full hydraulic steering gear according to claim 1 is characterized in that: Two or more fixing holes (9) are provided on the shell seats (5) at both ends.

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