A valve block assembly device

Abstract

The present invention provides a valve block assembly device, which specifically relates to the technical field of generator rotors. The valve block assembly device includes: an electro-hydraulic reversing valve, which is used to allow hydraulic oil to selectively flow to the hydraulic motor; a proportional speed regulating valve, wherein the electro-hydraulic reversing valve, the proportional speed regulating valve and the hydraulic motor are connected in sequence, and the proportional speed regulating valve is used to adjust the flow of hydraulic oil to the hydraulic motor; and an amplifier, which is control-connected to the proportional speed regulating valve, and the amplifier is used to amplify the control signal of the proportional speed regulating valve, so as to control the flow of the proportional speed regulating valve in real time through an analog electrical signal. In this way, the corresponding flow rate of the proportional speed regulating valve is adjusted by the amplifier according to the real-time situation during the cranking process of the generator rotor, so as to control the rotation speed of the hydraulic motor, thereby avoiding the problem that the rotor is easily damaged during the cranking process due to poor control sensitivity of the hydraulic motor and improper control of the rotor cranking drive.

Description

Technical Field

[0001] The present invention relates to the technical field of generators, and in particular to a valve block assembly device. Background Art

[0002] The generators of existing power plants need to be driven by external forces to rotate the generator rotors, so as to generate electricity. The generators need to be stopped, that is, the generator rotors stop rotating, for regular inspection and maintenance. After the aforementioned inspection and maintenance, the generators need to be cranked first to detect and determine whether the load driven by the rotor (i.e., the mechanical or transmission part) is stuck and the resistance is increased, so as not to increase the starting load of the rotor and damage the generator.

[0003] However, during the cranking process of the existing generator, the rotor is easily damaged due to improper control of the cranking drive device. In addition, the existing cranking drive device also has the problem of being easily damaged during use. Summary of the invention

[0004] The present invention aims to solve the problem that the rotor is easily damaged during the turning process due to improper control of the existing turning gear drive device to a certain extent; in addition, the existing turning gear drive device also has the problem of being easily damaged during use.

[0005] To this end, the present invention provides a valve block assembly device for controlling the rotation speed of a hydraulic motor of a hydraulic turning device, wherein the hydraulic motor is used to drive the turning of a generator rotor, comprising:

[0006] An electro-hydraulic reversing valve, used to allow hydraulic oil to selectively flow to the hydraulic motor;

[0007] A proportional speed regulating valve, wherein the electro-hydraulic reversing valve, the proportional speed regulating valve and the hydraulic motor are connected in sequence, and the proportional speed regulating valve is used to adjust the flow of hydraulic oil to the hydraulic motor; and

[0008] An amplifier is control-connected to the proportional speed regulating valve, and is used to amplify the control signal of the proportional speed regulating valve so as to control the flow of the proportional speed regulating valve in real time through an analog electrical signal.

[0009] Furthermore, the valve block assembly device also includes a first pipeline,

[0010] The first pipeline is connected to multiple oil holes of the gearbox body of the hydraulic turning device, the generator rotor, the gearbox and the hydraulic motor are sequentially connected in transmission, multiple transmission shafts are arranged in the gearbox, and multiple oil holes are arranged at the connection between the transmission shaft and the gearbox body.

[0011] Furthermore, the valve block assembly device also includes a switch valve device, and the switch valve device is installed on the first pipeline.

[0012] Furthermore, the switch valve device includes a first reversing valve and a second reversing valve, and the first reversing valve and the second reversing valve are sequentially arranged in series on the first pipeline.

[0013] Furthermore, the valve block assembly device also includes a speed regulating valve device, and the speed regulating valve device and the switch valve device are connected in series on the first pipeline.

[0014] Furthermore, the speed regulating valve device includes a second one-way valve, a third one-way valve, a fourth one-way valve, a fifth one-way valve and a speed regulating valve.

[0015] The output end of the second one-way valve and the input end of the third one-way valve are connected in parallel to the same oil port of the second reversing valve, the output end of the third one-way valve is connected to the input end of the speed regulating valve, the output end of the fifth one-way valve is connected to the input end of the speed regulating valve, the output end of the speed regulating valve is connected to the input end of the second one-way valve and the input end of the fourth one-way valve respectively, and the output end of the fourth one-way valve and the input end of the fifth one-way valve are simultaneously connected to the plurality of oil holes;

[0016] The first reversing valve and the second reversing valve are connected to the oil tank respectively.

[0017] Furthermore, the valve block assembly device also includes a base, and the electro-hydraulic reversing valve, the proportional speed control valve, the speed control valve device and the switch valve device are installed on the base. A plurality of oil passages are opened in the base, and the electro-hydraulic reversing valve, the proportional speed control valve, the speed control valve device and the switch valve device are connected to the corresponding hydraulic motor and the plurality of oil holes respectively through the plurality of oil passages.

[0018] Furthermore, the base is a rectangular structure, the length direction of the base is horizontally arranged, the electro-hydraulic reversing valve and the proportional speed control valve are installed on the top surface of the base, and the speed control valve device and the switch valve device are installed at one end of the length direction of the base.

[0019] Furthermore, the valve block assembly device also includes a second pipeline, the second pipeline is connected to the hydraulic motor, the second pipeline is provided with a sixth one-way valve, and the output end of the sixth one-way valve is connected to the hydraulic motor.

[0020] Further, the proportional speed regulating valve comprises a throttle valve and a fixed value pressure reducing valve, the input end of the throttle valve is connected to the electro-hydraulic reversing valve, the output end of the throttle valve is connected to the input end of the fixed value pressure reducing valve, and the output end of the fixed value pressure reducing valve is connected to the hydraulic motor;

[0021] The valve block assembly device also includes a first one-way valve, the input end of the first one-way valve is connected to the output end of the fixed value pressure reducing valve, and the output end of the first one-way valve is connected to the input end of the throttle valve.

[0022] The inventors of the present invention have discovered that the main reason why the existing turning drive device is improperly controlled and causes the rotor to be easily damaged during the turning process is that the speed control of the existing hydraulic motor is adjusted mechanically. For example, an adjusting rod drives a screw to adjust the flow of hydraulic oil in the hydraulic pipeline to the hydraulic motor, thereby adjusting the speed of the hydraulic motor. However, this mechanical adjustment method is prone to jamming and the adjusting parts are prone to wear and tear, which affects the adjustment accuracy, thereby causing the rotor to be easily damaged during the turning process. On the basis of this discovery, the inventor of the present invention utilizes the structural characteristics of the electro-hydraulic reversing valve itself to make the flow rate passing through it exceed the flow rate within the normal operating allowable range of the ordinary electromagnetic reversing valve, thereby providing sufficient driving force for the hydraulic motor, and at the same time utilizes the reversing characteristics of the electro-hydraulic reversing valve to make the electro-hydraulic reversing valve play the role of a switch, thereby ensuring the safe use of the hydraulic motor; at the same time, utilizing the characteristics of the proportional speed control valve in regulating the flow of hydraulic oil to the hydraulic motor, the amplifier is connected to the proportional speed control valve control, the control signal sent by the control console is amplified by the amplifier, and the flow rate of the proportional speed control valve is continuously controlled in real time by the analog electrical signal, thereby realizing the corresponding flow rate and velocity of the proportional speed control valve according to the real-time situation during the generator rotor cranking process, thereby controlling the speed of the hydraulic motor, thereby avoiding the problem that the mechanical control method is prone to jamming and affects the control sensitivity of the hydraulic motor, resulting in improper rotor cranking drive control, and causing the rotor to be easily damaged during the cranking process.

[0023] Furthermore, the high-pressure oil is passed through the first pipeline and the plurality of oil holes to lift up the corresponding transmission shaft, so that the transmission shaft and the gearbox body are arranged with a gap, thereby preventing the transmission shaft in the gearbox from being seriously damaged by friction, thereby ensuring the service life of the transmission shaft in the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the valve block assembly device according to a specific embodiment of the present invention;

[0025] Figure 2 It is a schematic structural diagram of the valve block assembly device according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "rear", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Moreover, in the drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the up direction, and the negative direction of the Z axis (that is, the direction opposite to the positive direction of the Z axis) represents the down direction;

[0029] In the drawings, the X-axis represents the length direction along the base;

[0030] It should also be noted that the aforementioned Z-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0032] It should be noted that the “connection” mentioned in the present embodiment includes a detachable connection and a non-detachable connection, that is, the “connection” mentioned in the present embodiment may be a detachable connection or a non-detachable connection, and the non-detachable connection here may also be referred to as a fixed connection; and if the present embodiment does not clearly indicate that the connection is a detachable connection or a non-detachable connection, it is considered that both detachable and non-detachable connections are applicable, and whether to use a detachable connection or a non-detachable connection may be determined according to the specific implementation conditions of the specific implementation process. Therefore, the “connection” will no longer be explained accordingly in the following text of this embodiment.

[0033] In addition, the "setting" mentioned in this embodiment includes installation, fixing, and connection. That is to say, the "setting" mentioned in this embodiment can be at least one of installation, fixing, and connection. Therefore, the "setting" will no longer be explained accordingly in the following text of this embodiment.

[0034] See also Figure 1 This embodiment provides a valve block assembly device for controlling the rotation speed of a hydraulic motor of a hydraulic turning device, wherein the hydraulic motor is used to drive the generator rotor turning, and includes:

[0035] An electro-hydraulic reversing valve 100, used to allow the hydraulic oil to selectively flow to the hydraulic motor;

[0036] A proportional speed regulating valve 200, wherein the electro-hydraulic reversing valve 100, the proportional speed regulating valve 200 and the hydraulic motor are connected in sequence, and the proportional speed regulating valve 200 is used to adjust the flow of hydraulic oil to the hydraulic motor; and

[0037] The amplifier is connected to the control of the proportional speed control valve 200. The amplifier is used to amplify the control signal of the console to the proportional speed control valve 200, amplify the control signal and convert it into an analog electrical signal, so as to control the flow of the proportional speed control valve 200 in real time through the analog electrical signal.

[0038] The inventors of the present invention have discovered that the main reason why the existing turning drive device is improperly controlled and causes the rotor to be easily damaged during the turning process is that the speed control of the existing hydraulic motor is adjusted mechanically. For example, an adjusting rod drives a screw to adjust the flow of hydraulic oil in the hydraulic pipeline to the hydraulic motor, thereby adjusting the speed of the hydraulic motor. However, this mechanical adjustment method is prone to jamming and the adjusting parts are prone to wear and tear, which affects the adjustment accuracy, thereby causing the rotor to be easily damaged during the turning process. On the basis of this discovery, the inventor of the present invention utilizes the structural characteristics of the electro-hydraulic reversing valve 100 itself to make the flow rate passing through it exceed the flow rate within the normal operating allowable range of the ordinary electromagnetic reversing valve, thereby providing sufficient driving force for the hydraulic motor, and at the same time utilizes the reversing characteristics of the electro-hydraulic reversing valve 100 to make the electro-hydraulic reversing valve 100 play the role of a switch, thereby ensuring the safe use of the hydraulic motor; at the same time, utilizing the characteristics of the proportional speed regulating valve 200 regulating the flow rate of hydraulic oil to the hydraulic motor, the amplifier is controlled and connected to the proportional speed regulating valve 200, the control signal of the proportional speed regulating valve 200 is amplified by the amplifier, and the flow rate of the proportional speed regulating valve 200 is continuously controlled in real time by the analog electrical signal, thereby realizing the corresponding flow rate and velocity of the proportional speed regulating valve 200 according to the real-time situation during the cranking process of the generator rotor through the amplifier, thereby controlling the speed of the hydraulic motor, thereby avoiding the problem that the mechanical control is prone to jamming, or the mechanical parts are worn out after a period of use and the sensitivity of the flow control is poor, resulting in improper control of the rotor cranking drive, and the rotor is easily damaged during the cranking process.

[0039] See also Figure 1 Preferably, the valve block assembly device further includes a first pipeline,

[0040] The first pipeline is connected to a plurality of oil holes of the gearbox body of the hydraulic turning device, the generator rotor, the gearbox and the hydraulic motor are sequentially connected in transmission, a plurality of transmission shafts are arranged in the gearbox, and a plurality of oil holes are arranged at the connection between the transmission shaft and the gearbox body.

[0041] The high-pressure oil passes through the first pipeline and the plurality of oil holes so that the corresponding transmission shaft and the gearbox body are arranged with a gap.

[0042] In this embodiment, the high-pressure oil is passed through the first pipeline and the plurality of oil holes to lift up the corresponding transmission shaft, so that the transmission shaft and the gearbox body are arranged with a gap, thereby preventing the transmission shaft in the gearbox from being seriously damaged by friction, thereby ensuring the service life of the transmission shaft in the gearbox.

[0043] It should be noted that the transmission shaft and the gearbox in this embodiment may be connected by means of a sliding bearing, and the oil hole may be an oil filling hole of the sliding bearing.

[0044] The "multiple oil holes to lift the corresponding transmission shaft" here can be to lift a transmission shaft, such as the power input shaft of the gearbox. Since the power input shaft of the gearbox has a high rotation speed, the friction between the shaft and the surrounding gearbox body during rotation must be fully reduced to ensure the service life of the shaft; and general bearings are difficult to provide good guiding and anti-wear effects for it, so it is necessary to use high-pressure oil to set a gap between the power input shaft and the gearbox body.

[0045] Preferably, the valve block assembly device further comprises a switch valve device, and the switch valve device is installed on the first pipeline.

[0046] See also Figure 1 Preferably, the switch valve device includes a first reversing valve 310 and a second reversing valve 320, and the first reversing valve 310 and the second reversing valve 320 are sequentially arranged in series on the first pipeline.

[0047] By sequentially arranging the first reversing valve 310 and the second reversing valve 320 in series on the first pipeline, high-pressure oil enters into the multiple oil holes only when the first reversing valve 310 and the second reversing valve 320 are in passage at the same time, thereby ensuring the safe operation of the transmission shaft.

[0048] That is to say, only when the first reversing valve 310 and the second reversing valve 320 are both turned on, can the high-pressure oil enter the gearbox and cooperate with the rotation of the gearbox; thereby preventing the operator from operating the switch valve incorrectly, causing the high-pressure oil to lift the transmission shaft, causing damage to the transmission shaft and the gears thereon, such as tooth knocking, transmission shaft misalignment, etc., which affects the safe use of the gearbox.

[0049] The first reversing valve 310 and the second reversing valve 320 may be electromagnetic ball valves.

[0050] Preferably, the valve block assembly device further comprises a speed regulating valve device, and the speed regulating valve device and the switch valve device are connected in series on the first pipeline.

[0051] The speed regulating valve device is used to adjust according to the running condition of the transmission shaft in the gearbox and the size of the gap between the transmission shaft and the gearbox, so as to prevent the problem of excessive eccentricity of the transmission shaft.

[0052] See also Figure 1 Preferably, the speed regulating valve device includes a second one-way valve 410, a third one-way valve 420, a fourth one-way valve 430, a fifth one-way valve 440 and a speed regulating valve 450.

[0053] The output end of the second one-way valve 410 and the input end of the third one-way valve 420 are connected in parallel to the same oil port of the second reversing valve 320, the output end of the third one-way valve 420 is connected to the input end of the speed regulating valve 450, the output end of the fifth one-way valve 440 is connected to the input end of the speed regulating valve 450, the output end of the speed regulating valve 450 is connected to the input end of the second one-way valve 410 and the input end of the fourth one-way valve 430 respectively, the output end of the fourth one-way valve 430 and the input end of the fifth one-way valve 440 are simultaneously connected to the plurality of oil holes;

[0054] The first reversing valve 310 and the second reversing valve 320 are connected to oil tanks respectively.

[0055] By arranging the second one-way valve 410, the third one-way valve 420, the fourth one-way valve 430, the fifth one-way valve 440 and the speed regulating valve 450, the speed regulating valve device is integratedly designed, so that the flow rate of the hydraulic oil in and out of the first pipeline of the gearbox can be controlled by only one speed regulating valve 450 in combination with a plurality of simple one-way valves, thereby ensuring that the high-pressure oil is stably transported through the first pipeline.

[0056] It should be noted that after the cranking is completed, the first reversing valve 310 and the second reversing valve 320 are both closed, so that the oil entering the gearbox flows back to the oil tank after passing through the speed control valve 450 and the first reversing valve 310, and the high-pressure oil pumped out by the high-pressure oil pump also flows back to the oil tank after being reversed by the second reversing valve 320.

[0057] In addition, through the arrangement of the second one-way valve 410, the third one-way valve 420, the fourth one-way valve 430, the fifth one-way valve 440 and the speed regulating valve 450, it is ensured that the high-pressure oil can only flow to the transmission shaft in one direction, thereby preventing the hydraulic oil from flowing back and causing unstable oil pressure to the transmission shaft, especially preventing the operator from causing unstable flow direction and flow of the high-pressure oil due to operating errors.

[0058] See also Figure 2Preferably, the valve block assembly device also includes a base 700, and the electro-hydraulic reversing valve 100, the proportional speed control valve 200, the speed control valve device and the switch valve device are installed on the base 700. A plurality of oil passages are opened in the base 700, and the electro-hydraulic reversing valve 100, the proportional speed control valve 200, the speed control valve device and the switch valve device are connected to the corresponding hydraulic motor and the plurality of oil holes through the plurality of oil passages.

[0059] By setting the base 700, each valve structure of the entire valve block assembly, such as the electro-hydraulic reversing valve 100, the proportional speed regulating valve 200, the speed regulating valve device and the switch valve device, fully cooperates with each mounting surface of the base 700, realizes an integrated design, and reduces the external volume of the entire valve block assembly device. Therefore, the valve block assembly device can be placed at any desired position.

[0060] See also Figure 2 Preferably, the base 700 is a rectangular structure, the length direction of the base 700 is horizontally arranged, the electro-hydraulic reversing valve 100 and the proportional speed control valve 200 are installed on the top surface of the base 700, and the speed control valve device and the switch valve device are installed at one end of the length direction of the base 700.

[0061] Since the electro-hydraulic reversing valve 100 and the proportional speed regulating valve 200 are the core of the entire valve block assembly device, arranging them at the top can facilitate installation and effective maintenance.

[0062] See also Figure 1 Preferably, the valve block assembly device further comprises a second pipeline, the second pipeline is connected to the hydraulic motor, the second pipeline is provided with a sixth one-way valve 600, and the output end of the sixth one-way valve 600 is connected to the hydraulic motor.

[0063] The lubricating oil may be pumped into the hydraulic motor through the second pipeline first, thereby ensuring that the hydraulic motor has good lubrication performance before working, and then after sufficient lubrication, the electro-hydraulic reversing valve 100 is used to reverse the direction to drive the hydraulic motor to rotate. In order to ensure the smooth rotation of the hydraulic motor, a sixth one-way valve 600 is provided to prevent the high-pressure oil from flowing back to the oil tank through the second pipeline before entering the hydraulic motor, or the second pipeline from causing fluctuations in the operation of the hydraulic motor, thereby ensuring the smooth operation of the turning gear.

[0064] See also Figure 1 Preferably, the proportional speed regulating valve 200 includes a throttle valve and a fixed value pressure reducing valve, the input end of the throttle valve is connected to the electro-hydraulic reversing valve 100, the output end of the throttle valve is connected to the input end of the fixed value pressure reducing valve, and the output end of the fixed value pressure reducing valve is connected to the hydraulic motor;

[0065] The valve block assembly device further includes a first one-way valve 210 , the input end of the first one-way valve 210 is connected to the output end of the fixed value pressure reducing valve, and the output end of the first one-way valve 210 is connected to the input end of the throttle valve.

[0066] In this embodiment, the throttle valve and the fixed-value pressure-reducing valve are used in combination to prevent load fluctuations during the operation of the hydraulic motor, thereby preventing the speed of the hydraulic motor from being affected. Therefore, the throttle valve and the fixed-value pressure-reducing valve cooperate with each other to achieve stable operation of the hydraulic motor. At the same time, the setting of the first one-way valve 210 plays a further role in stabilizing the pressure.

[0067] Figure 1 P is the oil inlet end, M is the oil delivery end leading to the hydraulic motor, E is the output end leading to the transmission, and T is the oil return end.

[0068] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A valve block assembly device, used to control the speed of a hydraulic motor of a hydraulic turning device, wherein the hydraulic motor is used to drive the turning of a generator rotor, characterized in that: include: An electro-hydraulic reversing valve (100), used to allow hydraulic oil to selectively flow to the hydraulic motor; A proportional speed regulating valve (200), wherein the electro-hydraulic reversing valve (100), the proportional speed regulating valve (200) and the hydraulic motor are connected in sequence, and the proportional speed regulating valve (200) is used to adjust the flow of hydraulic oil to the hydraulic motor; and an amplifier, connected to the proportional speed regulating valve (200) for controlling the proportional speed regulating valve (200), the amplifier being used to amplify a control signal for the proportional speed regulating valve (200) so as to control the flow of the proportional speed regulating valve (200) in real time through an analog electrical signal; The valve block assembly device also includes a first pipeline, which is used to connect to multiple oil holes of the gearbox body of the hydraulic turning device. The generator rotor, the gearbox and the hydraulic motor are sequentially connected in transmission. Multiple transmission shafts are arranged in the gearbox. Multiple oil holes are arranged at the connection between the transmission shaft and the gearbox body. The transmission shaft and the gearbox are connected by sliding bearings, and the oil holes are oil filling holes of the sliding bearings.

2. The valve block assembly device according to claim 1, characterized in that: The valve block assembly device further comprises a switch valve device, and the switch valve device is installed on the first pipeline.

3. The valve block assembly device according to claim 2, characterized in that: The switch valve device comprises a first reversing valve (310) and a second reversing valve (320), wherein the first reversing valve (310) and the second reversing valve (320) are sequentially arranged in series on the first pipeline.

4. The valve block assembly device according to claim 3, characterized in that: The valve block assembly device further comprises a speed regulating valve (450) device, wherein the speed regulating valve (450) device and the switch valve device are connected in series on the first pipeline.

5. The valve block assembly device according to claim 4, characterized in that: The speed regulating valve (450) device comprises a second one-way valve (410), a third one-way valve (420), a fourth one-way valve (430), a fifth one-way valve (440) and a speed regulating valve (450). The output end of the second one-way valve (410) and the input end of the third one-way valve (420) are connected in parallel to the same oil port of the second reversing valve (320); the output end of the third one-way valve (420) is connected to the input end of the speed regulating valve (450); the output end of the fifth one-way valve (440) is connected to the input end of the speed regulating valve (450); the output end of the speed regulating valve (450) is respectively connected to the input end of the second one-way valve (410) and the input end of the fourth one-way valve (430); the output end of the fourth one-way valve (430) and the input end of the fifth one-way valve (440) are simultaneously connected to the plurality of oil holes; The first reversing valve (310) and the second reversing valve (320) are respectively connected to an oil tank.

6. The valve block assembly device according to claim 4 or 5, characterized in that: The valve block assembly device also includes a base (700), and the electro-hydraulic reversing valve (100), the proportional speed regulating valve (200), the speed regulating valve (450) device and the switch valve device are installed on the base (700). A plurality of oil passages are opened in the base (700), and the electro-hydraulic reversing valve (100), the proportional speed regulating valve (200), the speed regulating valve (450) device and the switch valve device are respectively connected to the corresponding hydraulic motor and the plurality of oil holes through the plurality of oil passages.

7. The valve block assembly device according to claim 6, characterized in that: The base (700) is a rectangular parallelepiped structure. The base (700) is arranged horizontally in the length direction. The electro-hydraulic reversing valve (100) and the proportional speed regulating valve (200) are installed on the top surface of the base (700). The speed regulating valve (450) device and the switch valve device are installed at one end of the base (700) in the length direction.

8. The valve block assembly device according to any one of claims 1 to 7, characterized in that: The valve block assembly device further comprises a second pipeline, the second pipeline being in communication with the hydraulic motor, the second pipeline being provided with a sixth one-way valve (600), the output end of the sixth one-way valve (600) being in communication with the hydraulic motor.

9. The valve block assembly device according to any one of claims 1 to 7, characterized in that: The proportional speed regulating valve (200) comprises a throttle valve and a fixed value pressure reducing valve, wherein the input end of the throttle valve is connected to the electro-hydraulic reversing valve (100), the output end of the throttle valve is connected to the input end of the fixed value pressure reducing valve, and the output end of the fixed value pressure reducing valve is connected to the hydraulic motor; the valve block assembly device further comprises a first one-way valve (210), the input end of the first one-way valve (210) is connected to the output end of the fixed value pressure reducing valve, and the output end of the first one-way valve (210) is connected to the input end of the throttle valve.

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