Flow regulating structure of tractor, Tractor

Abstract

The utility model relates to the field of tractor flow regulation, specifically, a kind of flow regulation structure of tractor, tractor, comprising: multi-way valve, is equipped with the flow regulating valve adjusting rod for adjusting output flow;Flow regulating valve adjusting rod welding piece, one end is connected with the flow regulating valve adjusting rod of multi-way valve, the other end is connected with universal joint coupling universal joint through light pole;Manual adjusting rod combination, be located in tractor cab and be close to seat;Flow regulating valve adjusting rod welding piece and manual adjusting rod combination are connected with universal joint coupling universal joint;Mounting bracket, fixed in the upper portion of multi-way valve;Adjusting rod support, fixedly installed on mounting bracket;Elastic support element, cover between manual adjusting rod combination and adjusting rod support. It can realize driver to control multi-way valve flow under the condition that tractor does not extinguish, does not leave driver's cab, thereby adjust and control the gas pressure of air blower on seeding machine, improve the convenient comfort, security of operation.

Description

Technical Field

[0001] This utility model relates to the field of tractor flow regulation, specifically to a flow regulation structure for a tractor and a tractor. Background Technology

[0002] High-horsepower tractors have a market demand for seeders. Plant seeds are attracted to the seeding tray by gas suction. The strength of the gas suction is determined by the speed of the blower. The blower is driven by the seeder motor, and the speed of the motor is controlled by the output flow rate of the multi-way valve on the tractor. In other words, controlling the output flow rate of the multi-way valve controls the gas suction force (the seeder has a pressure gauge to display the pressure).

[0003] The system is equipped with a mechanically operated load-sensitive valve pre-compensated multi-way valve. The multi-way valve's output flow rate requires manual adjustment. Because the multi-way valve on the tractor cannot be positioned too high for easy access to the quick-connect couplings by personnel at the rear, the flow rate adjustment knob is far from the driver. The driver cannot simultaneously observe the pressure gauge on the seeder and operate the knob on the multi-way valve to control the output flow rate. If the driver wants to adjust the blower pressure during seeding operations, they must stop the machine, leave the cab, and operate from the rear of the tractor (the tractor cannot be turned off), which is inconvenient and unsafe. Utility Model Content

[0004] The purpose of this utility model is to provide a flow regulation structure for a tractor, which enables the driver to control the flow of a multi-way valve without turning off the tractor or leaving the cab, thereby regulating and controlling the gas pressure of the blower on the seeder, and improving the convenience, comfort and safety of operation.

[0005] Another objective of this invention is to provide a tractor that allows the driver to control the flow of a multi-way valve without turning off the tractor or leaving the cab, thereby regulating the gas pressure of the blower on the seeder and improving the convenience, comfort, and safety of operation.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A flow regulation structure for a tractor, comprising:

[0008] A multi-way valve is equipped with a flow regulating valve adjustment rod for adjusting the output flow rate;

[0009] The flow regulating rod welded assembly has one end connected to the flow regulating valve regulating rod of the multi-way valve, and the other end universally connected to the universal joint coupling via a smooth rod;

[0010] The manual adjustment lever assembly is located in the tractor cab and close to the seat for the driver to operate; the flow regulating lever welded assembly is universally connected to the manual adjustment lever assembly via the universal joint coupling, and can transmit the driver's operating torque to the flow regulating valve adjusting lever of the multi-way valve;

[0011] Mounting bracket, fixed to the upper part of the multi-way valve;

[0012] An adjustment rod bracket is fixedly installed on the mounting bracket to support the manual adjustment rod assembly;

[0013] An elastic support element is sleeved between the manual adjustment rod assembly and the adjustment rod bracket to form a soft support structure.

[0014] Furthermore, one end of the flow regulating rod welded component is connected to the flow regulating valve regulating rod of the multi-way valve via a key. One end of the flow regulating rod welded component is provided with a keyway that mates with the flow regulating valve regulating rod, and is locked and fixed by a first locking component.

[0015] Furthermore, the two ends of the universal joint coupling are respectively fastened to the flow regulating rod welded assembly and the manual adjusting rod assembly through the second locking member and the third locking member.

[0016] Furthermore, the manual adjustment lever assembly is equipped with a hand ball at the top, which facilitates the driver's gripping and rotation operation.

[0017] Furthermore, the multi-way valve is a load-sensitive valve with pre-compensation, its working port is arranged facing the rear of the tractor, and the flow regulating valve has a certain tilt angle with the vertical direction.

[0018] Furthermore, the elastic support element is made of rubber rings, and the upper and lower parts of the adjusting rod bracket are respectively provided with the rubber rings between them and the manual adjusting rod assembly. This not only realizes the positioning function of the manual adjusting rod assembly, but also eliminates the shaking caused by the assembly gap, thereby improving operational stability.

[0019] Furthermore, the adjusting rod bracket is fixedly mounted on the mounting bracket by the first bolt;

[0020] The mounting bracket is fixed to the upper part of the multi-way valve by a second bolt.

[0021] Furthermore, the first bolt is an M8 bolt, and the second bolt is an M10 bolt.

[0022] Furthermore, the first locking element is a locking screw.

[0023] A tractor including the aforementioned flow regulating structure.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] In this application, the manual adjustment lever assembly is located near the tractor cab seat, specifically at the rear of the tractor cab. The driver, seated in the cab, simply extends their hand through the rear window and rotates the manual adjustment lever assembly for adjustment. This rotation is transmitted via the universal joint coupling and the welded flow regulating lever assembly to the multi-way valve at the rear of the tractor, thereby changing the size of the variable throttle orifice of the multi-way valve, adjusting the flow rate, and ultimately controlling the air pressure of the tractor's seeder fan. This allows for simultaneous adjustment while monitoring the pressure gauge, providing a highly intuitive and safe operation. It enables the driver to control the multi-way valve flow rate and regulate the air pressure of the seeder fan without shutting off the tractor or leaving the cab, improving operational convenience, comfort, and safety. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the flow regulation structure of this utility model (focusing on the internal structure of a known multi-way valve).

[0028] Figure 2 This is a hydraulic schematic diagram of the multi-way valve of this utility model;

[0029] Figure 3 This is a schematic diagram showing the positional relationship between the flow regulation structure of this utility model and the seat, the rear crossbeam of the driver's cab, and the air tank.

[0030] Figure 4 This utility model Figure 3 Side view;

[0031] Figure 5 This utility model Figure 3 Rear view.

[0032] In the picture:

[0033] 1-Multi-way valve; 101-Flow regulating valve adjusting rod; 2-Flow regulating rod welded assembly; 3-First locking component; 4-Universal joint coupling; 5-Second locking component; 6-Elastic support element; 7-Adjusting rod bracket; 8-Manual adjusting rod assembly; 801-Handball; 9-First bolt; 10-Mounting bracket; 11-Second bolt; 12-Straight key; 13-Third locking component; 14-Seat; 15-Rear crossbeam of cab; 16-Air tank. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Example 1

[0042] First, let me introduce the design concept of this solution, which involves a basic and well-known technology: the load-sensitive valve pre-compensation system. This solution relies on this technology to design a mechanical flow regulation mechanism to achieve flow regulation.

[0043] Figure 1 The diagram shows the structure of multi-way valve 1, which is a typical known load-sensitive valve pre-compensated multi-way valve structure. Figure 2 The hydraulic schematic diagram consists of two parts: a compensating valve core and a variable throttle port; where P is the oil inlet and B is the working oil port.

[0044] Explanation of the flow regulation principle of multi-way valve 1:

[0045] The flow formula Q=KA derived from Bernoulli's equation In the formula, K, Since it's a constant, the flow rate Q from P to A depends only on two variables: the port area A and the pressure difference across the port. Pressure difference across the oil port It equals the pressure on the right side of the compensating valve core minus the pressure on the left side, which is the spring pressure. The change in spring length is very small. It is approximately a constant value; that is, the flow rate Q depends only on the size of the inlet area A.

[0046] Oil port area: such as Figure 1 As shown, the throttling orifice formed by the main valve stem and the valve body, and the throttling orifice formed by the flow control valve and the valve body, can be considered as the total flow area of ​​the oil. When the main valve stem reverses direction, the throttling orifice formed by the main valve stem relative to the valve body becomes a fixed value, and the throttling orifice formed by the flow control valve and the valve body is set to A. By rotating the valve core of the flow control valve, the flow area A of the oil can be changed, thereby changing the flow rate Q.

[0047] The size of the throttle port A formed by the flow regulating valve and the valve body can be changed by rotating an external knob. Because the knob is far from the driver and cannot be operated directly in the cab, a structural device needs to be added so that the driver can operate it from inside the cab. In addition, the working port of the multi-way valve 1 must face the rear of the tractor due to requirements, and the flow regulating valve has a certain angle with the vertical direction, which adds a certain degree of difficulty to the design structure.

[0048] In summary, and referring to Figures 3-5 This embodiment provides a flow regulation structure for a tractor, which includes:

[0049] The multi-way valve 1 is equipped with a flow regulating valve regulating rod 101 for adjusting the output flow rate;

[0050] The flow regulating rod welded part 2 has one end connected to the flow regulating valve regulating rod 101 of the multi-way valve 1, and the other end is universally connected to the universal joint coupling 4 through the smooth rod;

[0051] The manual adjustment lever assembly 8 is located in the tractor cab and close to the seat 14 for easy operation by the driver; the flow adjustment lever welded part 2 is universally connected to the manual adjustment lever assembly 8 through the universal joint coupling 4, and can transmit the driver's operating torque to the flow adjustment valve adjustment lever 101 of the multi-way valve 1;

[0052] Mounting bracket 10 is fixed to the upper part of the multi-way valve 1;

[0053] The adjustment rod bracket 7 is fixedly installed on the mounting bracket 10 to support the manual adjustment rod assembly 8;

[0054] The elastic support element 6 is sleeved between the manual adjustment rod assembly 8 and the adjustment rod bracket 7 to form a soft support structure.

[0055] Specifically, one end of the flow regulating rod welded part 2 is connected to the flow regulating valve regulating rod 101 of the multi-way valve 1 via a key 12. One end of the flow regulating rod welded part 2 is provided with a key 12 groove that cooperates with the flow regulating valve regulating rod 101, and is locked and fixed by the first locking member 3.

[0056] The two ends of the universal joint coupling 4 are respectively fastened to the flow regulating rod welded part 2 and the manual adjustment rod assembly 8 through the second locking part 5 and the third locking part 13, respectively. That is, the lower end of the universal joint coupling 4 is fastened to the flow regulating rod welded part 2 through the second locking part 5, and the upper end of the universal joint coupling 4 is fastened to the manual adjustment rod assembly 8 through the third locking part 13.

[0057] The first locking component 3, the second locking component 5, and the third locking component 13 can all be locking screws to facilitate quick assembly and disassembly between the flow regulating rod welded assembly 2 and the flow regulating valve regulating rod 101 of the multi-way valve 1, as well as quick assembly and disassembly between the two ends of the universal joint coupling 4 and the flow regulating rod welded assembly 2 and the manual regulating rod assembly 8.

[0058] The manual adjustment lever assembly 8 is equipped with a hand ball 801 at the top for easy gripping and rotation by the driver. The hand ball 801 can be made of plastic or metal. Anti-slip textures can also be provided on the hand ball 801 to facilitate rotation by the driver to turn the manual adjustment lever assembly 8.

[0059] The multi-way valve 1 is a load-sensitive valve pre-compensation type multi-way valve 1 (which is a known technology), with its working oil port facing the rear of the tractor, and the flow regulating valve having a certain tilt angle with the vertical direction.

[0060] The elastic support element 6 uses a rubber ring. The upper and lower parts of the adjusting rod bracket 7 are respectively provided with the rubber ring between them and the manual adjusting rod assembly 8. The rubber ring acts as a soft support bearing, which not only realizes the positioning function of the manual adjusting rod assembly 8, but also eliminates the shaking caused by its assembly gap, thus improving operational stability.

[0061] The adjusting rod bracket 7 is fixedly installed on the mounting bracket 10 by the first bolt 9.

[0062] The mounting bracket 10 is fixed to the upper part of the multi-way valve 1 by the second bolt 11.

[0063] The first bolt 9 is an M8 bolt, and the second bolt 11 is an M10 bolt.

[0064] Specifically, the manual adjustment lever assembly 8 is located near the tractor cab seat 14, specifically at the rear of the tractor cab, behind the rear crossbeam 15 and the air tank 16. The driver, seated in the cab, simply extends their hand through the rear window and rotates the manual adjustment lever assembly 8. This rotation is transmitted via the universal joint coupling 4 and the flow regulating lever welded assembly 2 to the multi-way valve 1 at the rear of the tractor. This changes the throttle port A of the multi-way valve 1, regulating the flow at the working port B, thereby altering the size of the variable throttle port and adjusting the flow rate. Ultimately, this controls the air pressure of the tractor's seeder fan, achieving the required fan pressure for seeding operations. This allows for simultaneous adjustment while monitoring the pressure gauge, providing a highly intuitive and safe operation. The driver can control the flow rate of the multi-way valve 1 without shutting off the tractor or leaving the cab, thus regulating the air pressure of the seeder fan and improving operational convenience, comfort, and safety.

[0065] Example 2

[0066] This embodiment provides a flow regulation structure for a tractor, which differs from Embodiment 1 in that:

[0067] In this embodiment, the upper and lower parts of the adjusting rod bracket 7 need to contact the manual adjusting rod assembly 8, respectively. Therefore, bearings are respectively provided at the positions where the upper and lower parts of the adjusting rod bracket 7 need to contact the manual adjusting rod assembly 8. That is, bearings are provided between the upper and lower parts of the adjusting rod bracket 7 and the manual adjusting rod assembly 8, respectively. The bearings realize the rotational connection between the manual adjusting rod assembly 8 and the adjusting rod bracket 7, which can realize the positioning function of the manual adjusting rod assembly 8 and eliminate the shaking caused by its assembly gap, thus improving the operational stability.

[0068] Example 3

[0069] This embodiment provides a flow regulation structure for a tractor, which differs from Embodiment 1 in that:

[0070] A drive mechanism for rotating the manual adjustment lever assembly 8 is installed on the mounting bracket 10 or the tractor. The drive mechanism includes a forward / reverse motor and a transmission assembly, which can be a pulley assembly, sprocket assembly, or gear assembly. The output shaft of the forward / reverse motor is connected to the manual adjustment lever assembly 8 via the transmission assembly. A controller and operating module are installed in the cab. The forward / reverse motor and operating module are electrically connected to the controller. The operating module uses a control display screen, allowing the driver to control the forward / reverse rotation and rotation angle of the motor to precisely control the size of the variable throttle orifice of the multi-way valve 1, thereby precisely adjusting the flow rate. The operating module can also use a combination of control buttons, including at least a forward button, a reverse button, and a stop button. Pressing the forward button controls the forward rotation of the motor, pressing the reverse button controls the reverse rotation, and pressing the stop button stops the motor. This design, combining the drive mechanism with the controller and operating module, is more convenient and efficient than manually rotating the handwheel 801 to adjust the flow rate.

[0071] Example 4

[0072] A tractor including the aforementioned flow regulating structure.

[0073] The beneficial effects of the technical solution of this utility model are:

[0074] In this application, the manual adjustment lever assembly 8 is located near the tractor cab seat 14, specifically at the rear of the tractor cab. The driver, seated in the cab, simply extends their hand through the rear window and rotates the manual adjustment lever assembly 8 for adjustment. This rotation is transmitted to the multi-way valve 1 at the rear of the tractor via the universal joint coupling 4 and the flow regulating lever welded assembly 2, thereby changing the size of the variable throttle orifice of the multi-way valve 1, adjusting the flow rate, and ultimately controlling the air pressure of the tractor's seeder fan. This allows for simultaneous adjustment while monitoring the pressure gauge, providing a highly intuitive and safe operation. It enables the driver to control the flow rate of the multi-way valve 1 without shutting off the tractor or leaving the cab, thereby regulating the air pressure of the seeder fan and improving operational convenience, comfort, and safety.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0076] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A flow regulation structure, characterized in that, include: The multi-way valve (1) is equipped with a flow regulating valve regulating rod (101) for regulating the output flow. The flow regulating rod welded part (2) has one end connected to the flow regulating valve regulating rod (101), and the other end is universally connected to the universal joint coupling (4) through the smooth rod; The manual adjustment lever assembly (8) is located in the tractor cab and close to the seat (14); the flow adjustment lever welded part (2) is universally connected to the manual adjustment lever assembly (8) through the universal joint coupling (4) and can transmit the driver's operating torque to the flow adjustment valve adjustment lever (101) of the multi-way valve (1). Mounting bracket (10) is fixed to the upper part of the multi-way valve (1); Adjustment rod bracket (7) is fixedly installed on the mounting bracket (10) to support the manual adjustment rod assembly (8). An elastic support element (6) is sleeved between the manual adjustment rod assembly (8) and the adjustment rod bracket (7) to form a soft support structure.

2. The flow regulation structure according to claim 1, characterized in that, One end of the flow regulating rod welded part (2) is connected to the flow regulating valve regulating rod (101) of the multi-way valve (1) via a key (12). One end of the flow regulating rod welded part (2) is provided with a keyway that cooperates with the flow regulating valve regulating rod (101) and is locked and fixed by the first locking part (3).

3. The flow regulation structure according to claim 1, characterized in that, The universal joint coupling (4) is fastened at both ends to the flow regulating rod welded part (2) and the manual regulating rod assembly (8) by the second locking part (5) and the third locking part (13), respectively.

4. The flow regulation structure according to claim 1, characterized in that, The manual adjustment lever assembly (8) is equipped with a hand ball (801) at the top, which is convenient for the driver to grip and rotate.

5. The flow regulation structure according to claim 1, characterized in that, The multi-way valve (1) is a load-sensitive valve with pre-compensation type multi-way valve. Its working oil port is arranged facing the rear of the tractor, and the flow regulating valve has an inclined angle with the vertical direction.

6. The flow regulation structure according to claim 1, characterized in that, The elastic support element (6) is made of rubber rings, and the rubber rings are respectively placed between the upper and lower parts of the adjusting rod bracket (7) and the manual adjusting rod assembly (8).

7. The flow regulation structure according to claim 1, characterized in that, The adjusting rod bracket (7) is fixedly installed on the mounting bracket (10) by the first bolt (9); The mounting bracket (10) is fixed to the upper part of the multi-way valve (1) by the second bolt (11).

8. The flow regulation structure according to claim 7, characterized in that, The first bolt (9) is an M8 bolt, and the second bolt (11) is an M10 bolt.

9. The flow regulation structure according to claim 2, characterized in that, The first locking element (3) is a locking screw.

10. A tractor, characterized in that, Includes the flow regulation structure as described in any one of claims 1-9.

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