Double-speed reducer gear shifting control system and tunneling equipment

Abstract

The utility model provides a double-speed reducer gear shifting control system and tunneling equipment, and relates to the technical field of tunneling equipment. The control system comprises multiple gear shifting oil cylinders and an oil supply module, each gear shifting oil cylinder is provided with a first oil port and a second oil port, a first on-off control valve is arranged on the side, where the first oil port is located, of each gear shifting oil cylinder, and a second on-off control valve is arranged on the side, where the second oil port is located, of each gear shifting oil cylinder; the oil supply module comprises an oil supply device, a hydraulic pump and an adjusting valve assembly which are sequentially communicated through an oil supply pipeline, and the adjusting valve assembly is communicated with first oil ports of the multiple gear shifting oil cylinders through a first oil way, further communicated with second oil ports of the multiple gear shifting oil cylinders through a second oil way and communicated with the oil supply device through an oil return pipeline. According to the double-speed reducer gear shifting control system and the tunneling equipment, the problem that the tunneling equipment cannot achieve large-torque escape under the complex geological condition is solved, the adaptability and the escape capacity of the tunneling equipment are improved, and the operation efficiency is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunneling equipment, and particularly relates to a dual-speed reducer gear shifting control system and tunneling equipment. BACKGROUND

[0002] The tunneling equipment is mainly used for tunnel construction. The existing tunneling equipment cutter head has high rotating speed and large torque, and the rock is cut by the rotating cutter head and the cutting tool installed on the cutter head.

[0003] However, when encountering complex geology such as extremely hard rock, collapse, mudstone and the like, the tunneling resistance of the tunneling equipment will be increased, the tunneling machine is prone to get into trouble, and large torque cannot be achieved to get out of trouble. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides a dual-speed reducer gear shifting control system and tunneling equipment, which solves the problems that the tunneling resistance of the tunneling equipment is increased, the tunneling equipment is prone to get into trouble, and large torque cannot be achieved to get out of trouble under complex geological conditions, realizes the switching of the tunneling equipment under different geological conditions, improves the adaptability and trouble-escaping ability of the tunneling equipment, and ensures the safety and operation efficiency of the tunnel construction.

[0005] In one aspect, the present application provides a dual-speed reducer gear shifting control system, comprising:

[0006] The gear shifting oil cylinder is parallelly arranged, each gear shifting oil cylinder has a first oil port and a second oil port, the first oil port of each gear shifting oil cylinder is provided with a first on-off control valve, and the second oil port of each gear shifting oil cylinder is provided with a second on-off control valve;

[0007] The oil supply module comprises an oil supply device, a hydraulic pump and an adjusting valve assembly. The outlet of the oil supply device, the hydraulic pump and the adjusting valve assembly are sequentially communicated through an oil supply pipeline. The adjusting valve assembly is communicated with the first oil ports of the plurality of gear shifting oil cylinders through a first oil path, communicated with the second oil ports of the plurality of gear shifting oil cylinders through a second oil path, and communicated with the oil supply device through a return oil pipeline.

[0008] The gear shifting oil cylinder is configured to switch between a low-speed gear and a high-speed gear. In the high-speed gear, the first oil path constitutes an oil injection side, and the second oil path constitutes a return oil side. In the low-speed gear, the second oil path constitutes an oil injection side, and the first oil path constitutes a return oil side.

[0009] The adjusting valve assembly injects oil to the gear shifting oil cylinder through the oil injection side and returns oil through the return oil side.

[0010] In a possible implementation, the double-speed reducer gear shifting control system further comprises an electric control module electrically connected to the first on-off control valve and the second on-off control valve; and / or:

[0011] The electric control module is electrically connected to the regulating valve assembly.

[0012] In a possible implementation, the regulating valve assembly comprises a pressure reducing valve, an electromagnetic reversing valve and a balance valve connected in sequence;

[0013] When the regulating valve assembly is supplied with oil from the oil supply side, the hydraulic pump drives the hydraulic oil in the oil supply device to flow to the gear shifting oil cylinder through the pressure reducing valve, the electromagnetic reversing valve and the balance valve in sequence; when the gear shifting oil cylinder returns oil to the regulating valve assembly, the hydraulic oil flows to the oil supply device through the balance valve, the electromagnetic reversing valve and the oil return pipeline in sequence.

[0014] In a possible implementation, the double-speed reducer gear shifting control system further comprises:

[0015] A first pressure detection device arranged on the first oil path to detect the pressure in the first oil path; and / or,

[0016] A second pressure detection device arranged on the second oil path to detect the pressure in the second oil path.

[0017] In a possible implementation, the double-speed reducer gear shifting control system further comprises:

[0018] A first energy storage module arranged on the first oil path to store energy or supplement pressure for the gear shifting oil cylinder in the high-speed gear;

[0019] A second energy storage module arranged on the second oil path to store energy or supplement pressure for the gear shifting oil cylinder in the low-speed gear.

[0020] In a possible implementation, the first energy storage module and the second energy storage module each comprise an energy accumulator, a third on-off control valve and a third pressure detection device,

[0021] The energy accumulator of the first energy storage module is connected to the first oil path through a first energy storage pipeline, and the energy accumulator of the second energy storage module is connected to the second oil path through a second energy storage pipeline,

[0022] The third on-off control valve is used to control the on-off of the energy accumulator;

[0023] The third pressure detection device is used to detect the pressure of the energy accumulator.

[0024] In a possible implementation, the oil supply module further comprises:

[0025] a filter device, which is arranged in the oil supply pipeline and located on the downstream side of the hydraulic pump; and / or,

[0026] a fourth on-off control valve, which is arranged in the oil supply pipeline and located on the downstream side of the hydraulic pump to control the on-off of the oil supply pipeline; and / or,

[0027] a throttle valve, which is arranged in the oil supply pipeline and located on the downstream side of the hydraulic pump to adjust the flow of the oil supply pipeline; and / or,

[0028] an overflow valve, which is in communication with the outlet of the hydraulic pump to adjust the pressure at the outlet of the hydraulic pump.

[0029] In a possible implementation, the plurality of gear shift oil cylinders are independently switched between the low speed gear and the high speed gear, or at least part of the plurality of gear shift oil cylinders are synchronously switched between the low speed gear and the high speed gear.

[0030] In a possible implementation, the double-speed speed reducer gear shift control system further comprises a locking device, which is configured to lock the gear shift oil cylinder when the gear shift oil cylinder is in at least one of the low speed gear and the high speed gear.

[0031] In a possible implementation, the double-speed speed reducer gear shift control system further comprises a position detection module, which is configured to detect the meshing state of the gear shift oil cylinder gear.

[0032] Another aspect of the present application provides a tunneling equipment comprising the double-speed speed reducer gear shift control system in any of the possible implementations.

[0033] The application provides a double-speed reducer gear shifting control system and a tunneling equipment. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0035] Figure 1 FIG. 1 is a structural schematic diagram of a double-speed reducer gear shifting control system according to an embodiment of the present application;

[0036] Figure 2 FIG. 2 is a partial structural schematic diagram showing a low-speed gear position and a high-speed gear position. Figure 1

[0037] Legend of reference signs:

[0038] 100 - gear shifting cylinder; 100a - low-speed gear position; 100b - high-speed gear position;

[0039] 200 - oil supply module; 210 - hydraulic pump; 211 - driving motor; 220 - adjusting valve assembly; 221 - pressure reducing valve; 222 - electromagnetic reversing valve; 223 - balance valve; 230 - filtering device; 240 - fourth on-off control valve; 250 - throttle valve; 260 - overflow valve; 270 - pressure gauge; 280 - one-way valve;

[0040] 310 - first on-off control valve; 320 - second on-off control valve;

[0041] ​410 - first pressure detection device; 420 - second pressure detection device;

[0042] 500 - energy storage group; 510 - first energy storage module; 520 - second energy storage module; 501 - energy accumulator; 502 - third on-off control valve; 503 - third pressure detection device;

[0043] 10 - first oil path;

[0044] 20 - second oil path. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0046] The tunneling equipment is mainly used for tunnel construction. In the complex environment of tunnel construction, the tunneling equipment as a core tool, its performance and adaptability are directly related to the progress and safety of the project. For example, the tunneling equipment can be a full-face hard rock tunnel boring machine (TBM), a cantilever tunneling machine, a shield machine, a rock tunneling machine, etc.

[0047] Taking the full-face hard rock tunnel boring machine as an example, the conventional tunneling equipment cuts rock through a rotating cutterhead and cutting tools installed on the cutterhead. The conventional tunneling equipment, especially its key component, the cutterhead system, is designed to cut rock through a rotating cutterhead and cutting tools installed on the cutterhead by high-speed rotation combined with high-torque output, to push the tunnel forward. However, when the construction environment encounters extreme geological conditions, such as extremely hard rock, collapse area, mudstone or mixed stratum, etc., the complex geology will increase the tunneling resistance of the tunneling equipment, and the tunneling machine is easy to get into trouble, and cannot realize large-torque escape.

[0048] In view of this, the application provides a double-speed reducer gear shifting control system and a tunneling device. When the tunneling device is in a normal tunneling state, the gear shifting oil cylinder is in a preset gear position, such as a high-speed gear position, the adjusting valve assembly injects oil into the first oil port of the gear shifting oil cylinder through the first oil line, and the second oil port returns oil through the oil return line. When the tunneling process encounters complex geological conditions such as extremely hard rock, collapse or mudstone, the tunneling resistance increases, and the tunneling speed decreases. The opening and closing states of the internal valves of the adjusting valve assembly are switched, and the oil line connection of the gear shifting oil cylinder is switched, so that the second oil line becomes the oil injection side and the first oil line becomes the oil return side, thereby realizing the switching of the low-speed gear position. In the low-speed gear position, the hydraulic pump injects oil into the second oil port of the gear shifting oil cylinder through the adjusting valve assembly, increases the torque output of the cutter head, and at the same time reduces the rotating speed, thereby enhancing the escape ability of the tunneling device. In this way, the problem that the tunneling device is easily trapped in a difficult situation and cannot realize large torque escape under complex geological conditions is solved. By introducing the double-speed reducer gear shifting control system, the switching of the tunneling device under different geological conditions is realized, the adaptability and escape ability of the tunneling device are improved, and the safety and work efficiency of tunnel construction are ensured.

[0049] The double-speed reducer gear shifting control system of the first aspect of the application will be described below. Figure 1 Figure 2 The double-speed reducer gear shifting control system of the first aspect of the application will be described below.

[0050] The double-speed reducer gear shifting control system of the first aspect of the application will be described below. Figure 1 Figure 2 The double-speed reducer gear shifting control system of the first aspect of the application will be described below.

[0051] The double-speed reducer gear shifting control system of the first aspect of the application will be described below.

[0052] The double-speed reducer gear shifting control system of the first aspect of the application will be described below.

[0053] ​​The gear shift oil cylinder 100 is configured to switch between a low speed gear 100a and a high speed gear 100b, wherein, in the high speed gear 100b, the first oil passage 10 constitutes an oil injection side and the second oil passage 20 constitutes an oil return side, and in the low speed gear 100a, the second oil passage 20 constitutes an oil injection side and the first oil passage 10 constitutes an oil return side. Specifically, the regulating valve assembly 220 adjusts the opening and closing state of the internal valve to realize the switching of the oil injection side and the oil return side, and oil is injected into the gear shift oil cylinder 100 through the oil injection side and returned through the oil return side.

[0054] As can be seen, when the tunneling equipment is in a normal tunneling state, the gear shift oil cylinder 100 is in a preset gear, such as the high speed gear 100b, the regulating valve assembly 220 injects oil into the first oil port of the gear shift oil cylinder 100 through the first oil passage 10, and the second oil port returns oil through the oil return pipeline; when complex geological conditions such as extremely hard rock, collapse or mudstone are encountered during tunneling, the tunneling resistance increases and the tunneling speed decreases; the opening and closing state of the internal valve of the regulating valve assembly 220 is switched, and the oil passage connection of the gear shift oil cylinder 100 is switched, so that the second oil passage 20 becomes the oil injection side and the first oil passage 10 becomes the oil return side, realizing the switching of the low speed gear 100a. In the low speed gear 100a, the hydraulic pump 210 injects oil into the second oil port of the gear shift oil cylinder 100 through the regulating valve assembly 220, increases the torque output of the cutter head, and at the same time reduces the rotating speed, thereby enhancing the escape ability of the tunneling equipment.

[0055] In this way, the problem that the tunneling equipment is easily trapped in difficult situations and cannot realize large torque escape under complex geological conditions is solved, the switching of the tunneling equipment under different geological conditions is realized by introducing the double-speed reducer gear shift control system, the adaptability and escape ability of the tunneling equipment are improved, and the safety and work efficiency of tunnel construction are ensured.

[0056] In some embodiments, in combination Figure 1 A one-way valve 280 is arranged at the oil return port of the oil supply device to prevent backflow of hydraulic oil during oil return.

[0057] In some embodiments, in combination Figure 1 The double-speed reducer gear shift control system further comprises an electric control module electrically connected to the first on-off control valve 310 and the second on-off control valve 320, i.e. the electric control module can control the opening and closing state of the first on-off control valve 310 and the second on-off control valve 320. In addition, the electric control module is also the main component for realizing the control of the gear shift process. The electric control module can realize control, fault diagnosis and protection functions by receiving and processing signals, thereby ensuring the accuracy of the gear shift process and the safety of the double-speed reducer gear shift control system. For example, the electric control module can include a microprocessor, a sensor interface, an actuator interface, control software and other components.

[0058] In addition, in some embodiments, in combination Figure 1The electric control module is also electrically connected to the adjusting valve assembly 220. The operating personnel controls the opening and closing state of the valve inside the adjusting valve assembly 220 through the electric control module, so as to realize the switching of the gear shifting oil cylinder 100 between the low-speed gear 100a and the high-speed gear 100b.

[0059] For example, the electric control module can also include an automatic control system. The automatic control system can monitor the geological conditions, the tunneling speed, etc., and determine the target gear of the gear shifting according to the actual operation condition, and send a gear shifting instruction to the adjusting valve assembly 220.

[0060] For example, the electric control module can also include a monitoring module, which is used to monitor the operating state and parameters of the adjusting valve assembly 220, the gear shifting oil cylinder 100 and the whole double-speed gear shifting control system, such as the oil pressure, the oil temperature, the oil flow speed, etc. When an abnormal or fault condition is found, such as the oil pressure being too high, the oil temperature being abnormal, the oil flow being blocked, etc., the electric control module will send a protection instruction, such as cutting off the oil source, limiting the gear shifting, sending an alarm, etc., to protect the operation safety of the double-speed gear shifting control system.

[0061] In some embodiments, in combination with Figure 1 The adjusting valve assembly 220 includes a pressure reducing valve 221, an electromagnetic reversing valve 222 and a balance valve 223 connected in sequence. When the adjusting valve assembly 220 is supplied with oil through the oil injection side, the hydraulic pump 210 drives the hydraulic oil in the oil supply device to flow to the gear shifting oil cylinder 100 through the pressure reducing valve 221, the electromagnetic reversing valve 222 and the balance valve 223 in sequence. When the gear shifting oil cylinder 100 returns oil to the adjusting valve assembly 220, the hydraulic oil flows to the oil supply device through the balance valve 223, the electromagnetic reversing valve 222 and the oil return pipeline in sequence. For example, the electromagnetic reversing valve 222 is electrically connected to the electric control module.

[0062] Specifically, when the electric control module sends a gear shifting instruction and determines that the gear shifting oil cylinder 100 needs to be supplied with oil to switch gears, the electromagnetic reversing valve 222 adjusts the position of the valve core inside according to the instruction, so that the corresponding oil circuit is conducted. The hydraulic pump 210 starts to work and drives the hydraulic oil in the oil supply device to flow to the adjusting valve assembly 220 through the oil supply pipeline. The hydraulic oil first passes through the pressure reducing valve 221, which reduces the pressure of the oil according to the system set pressure value, to ensure that the pressure of the oil is within the bearing range of the gear shifting oil cylinder 100. The reduced hydraulic oil continues to flow to the electromagnetic reversing valve 222, which guides the oil to the corresponding gear shifting oil cylinder 100 oil port, i.e. the first oil port or the second oil port, according to the current gear requirement. Finally, the hydraulic oil flows into the gear shifting oil cylinder 100, pushing the piston inside the oil cylinder to move, realizing the switching of the gear. The balance valve 223 pressurizes the oil circuit to resist the flow of the oil, maintaining a certain pressure inside the whole oil circuit, improving the stability and reliability of the system.

[0063] It can be seen that by the sequential communication of the pressure reducing valve 221, the electromagnetic reversing valve 222 and the balance valve 223, the valve assembly 220 can control the flow direction, pressure and flow of the hydraulic oil, ensure the normal operation of the shift cylinder 100 at different gears, and improve the stability and reliability of the double-speed reducer shift control system.

[0064] In some embodiments, in combination with Figure 1 , the double-speed reducer shift control system further comprises a first pressure detection device 410 arranged in the first oil circuit 10 to detect the pressure in the first oil circuit 10; in other embodiments, the double-speed reducer shift control system further comprises a second pressure detection device 420 arranged in the second oil circuit 20 to detect the pressure in the second oil circuit 20.

[0065] In this way, by arranging the first pressure detection device 410 and / or the second pressure detection device 420, the pressure change in the oil circuit can be monitored, ensuring that the oil pressure is within the normal range set, and when the pressure in the oil circuit is abnormal, such as too high or too low, the pressure detection device can issue a warning signal to remind the operator or the automatic control system to take appropriate measures to prevent the fault from expanding. By monitoring the pressure change in the oil circuit, potential problems can be discovered and handled in a timely manner, improving the overall system efficiency and stability.

[0066] In some embodiments, in combination with Figure 1 and Figure 2 , the double-speed reducer shift control system further comprises an energy storage group 500, which comprises a first energy storage module 510 and a second energy storage module 520. The first energy storage module 510 is arranged in the first oil circuit 10 to store energy or supplement pressure for the shift cylinder 100 in the high-speed gear 100b. Specifically, when the system needs to switch to the high-speed gear 100b, the first oil circuit 10 is the oil injection side, the first energy storage module 510 stores energy and applies a preset pressure to the shift cylinder 100, pushing the shift cylinder 100 to switch and maintain in the high-speed gear 100b.

[0067] In addition, the second energy storage module 520 is arranged in the second oil circuit 20 to store energy or supplement pressure for the shift cylinder 100 in the low-speed gear 100a. Specifically, when the system needs to switch to the low-speed gear 100a, the second oil circuit 20 is the oil injection side, the second energy storage module 520 stores energy and applies a preset pressure to the shift cylinder 100, pushing the shift cylinder 100 to switch and maintain in the low-speed gear 100a.

[0068] The arrangement of the first energy storage module 510 and the second energy storage module 520 provides stable pressure support for the shift cylinder 100, and the energy storage module ensures the constancy of the oil circuit pressure, improving the stability of the overall system.

[0069] In some embodiments, in combination withFigure 1 The first energy storage module 510 and the second energy storage module 520 each include an energy accumulator 501, a third on-off control valve 502, and a third pressure detection device 503. The energy accumulator 501 of the first energy storage module 510 is in communication with the first oil passage 10 through a first energy storage passage, and the energy accumulator 501 of the second energy storage module 520 is in communication with the second oil passage 20 through a second energy storage passage. In this way, the energy accumulator 501 can charge and discharge energy according to the pressure change of the respective oil passage.

[0070] The third on-off control valve 502 is used to control the on-off of the energy accumulator 501. When the energy accumulator 501 needs to be charged, the control valve is opened to allow hydraulic oil to flow into the energy accumulator 501. Exemplarily, the third on-off control valve 502 can be electrically connected to the electronic control module. In some situations, the third on-off control valve 502 can be controlled to be opened before the system is started and the oil is injected, and the third on-off control valve 502 can be controlled to be closed when the system stops working. Exemplarily, the third on-off control valve 502 is an electromagnetic ball valve.

[0071] The third pressure detection device 503 is used to detect the pressure of the energy accumulator 501. The working condition of the third pressure detection device 503 is monitored by detecting the pressure value in the energy accumulator 501. Exemplarily, the third pressure detection device 503 feeds back the detected pressure value to the electronic control module, and the electronic control module can adjust the on-off state of the third on-off control valve 502 according to the feedback data to adjust the working state of the energy accumulator 501.

[0072] In some embodiments, in combination with Figure 1 The oil supply module 200 further includes a filtering device 230 arranged in the oil supply passage and located on the downstream side of the hydraulic pump 210. The filtering device 230 is used to remove impurities, particles, and pollutants in the hydraulic oil, so that the hydraulic oil output from the hydraulic pump 210 is filtered before entering the overall system, preventing impurities from entering the system and causing damage or failure, prolonging the service life of each component, and improving the overall performance of the system.

[0073] In some embodiments, in combination with Figure 1 The oil supply module 200 further includes a fourth on-off control valve 240 arranged in the oil supply passage and located on the downstream side of the hydraulic pump 210 to control the on-off of the oil supply passage. By controlling the on-off state of the fourth on-off control valve 240, the control of the oil supply state of the hydraulic system can be realized. For example, during maintenance or repair, the control valve can be closed to cut off the supply of hydraulic oil. Exemplarily, the fourth on-off control valve 240 is an electromagnetic ball valve.

[0074] In some embodiments, in combination with Figure 1The oil supply module 200 further comprises a throttle valve 250 arranged in the oil supply pipeline and located on the downstream side of the hydraulic pump 210 to adjust the flow rate of the oil supply pipeline. The throttle valve 250 is used to adjust the flow rate of the oil supply pipeline. By changing the opening size of the throttle valve 250, the flow rate of the hydraulic oil entering the system is controlled, thereby realizing the control of the flow rate and pressure of the hydraulic oil.

[0075] In some embodiments, in combination with Figure 1 The oil supply module 200 further comprises an overflow valve 260 in communication with the outlet of the hydraulic pump 210 to adjust the pressure at the outlet of the hydraulic pump 210. The overflow valve 260 is used to adjust the pressure at the outlet of the hydraulic pump 210. When the system pressure exceeds the set value, the overflow valve 260 will automatically open and release excess hydraulic oil, thereby protecting the overall system from excessive pressure. For example, a pressure gauge 270 is arranged at the overflow valve 260 to monitor the pressure value at the outlet of the hydraulic pump 210.

[0076] In some embodiments, in combination with Figure 1 and Figure 2 The plurality of shift oil cylinders 100 are independently switched between the low-speed gear 100a and the high-speed gear 100b, or at least part of the plurality of shift oil cylinders 100 are synchronously switched between the low-speed gear 100a and the high-speed gear 100b. There are two modes for the double-speed reducer shift system to switch the plurality of shift oil cylinders 100 between the low-speed gear 100a and the high-speed gear 100b, namely independent switching and synchronous or partial synchronous switching. The double-speed reducer shift system can perform shift operation on one or more shift oil cylinders 100 according to the actual working conditions.

[0077] Specifically, in the independent switching mode, each shift oil cylinder 100 can be independently switched between the low-speed gear 100a and the high-speed gear 100b. For example, in some working conditions, only one shift oil cylinder 100 in the entire system needs to be switched to the high-speed gear 100b to realize the tunneling operation, while the other shift oil cylinders 100 need to remain in the low-speed gear 100a to provide greater torque. The independent switching mode provides higher flexibility and adaptability, enabling the system to better meet the complex and variable working condition requirements. In the synchronous switching or partial synchronous switching mode, the plurality of shift oil cylinders 100 maintain a certain degree of synchronization during the switching process between the low-speed gear 100a and the high-speed gear 100b to ensure the stability and coordination of the overall system. For example, in some working conditions, all shift oil cylinders 100 are required to be completely synchronized; in some working conditions, only part of the shift oil cylinders 100 are required to be synchronized, while the other shift oil cylinders 100 can be independently adjusted within a certain range.

[0078] In some embodiments, in combination with Figure 1 and Figure 2The double-speed reducer gear shifting control system further comprises a locking device configured to lock the gear shifting cylinder 100 when the gear shifting cylinder 100 is in at least one of the low-speed gear 100a and the high-speed gear 100b, ensuring the stability and reliability of the gear shifting operation, especially under load or complex working conditions. For example, the locking device can be a mechanical lock, a hydraulic lock, an electromagnetic lock, etc. For example, the mechanical lock directly fixes the position of the gear shifting cylinder 100 through a mechanical structure such as a locking pin or a locking ring, achieving physical locking and avoiding the gear shifting cylinder 100 from slipping due to large vibration during tunneling, thereby ensuring the tunneling efficiency.

[0079] In the double-speed reducer, ensuring complete meshing of the gears is a prerequisite for gear shifting. When the gears are not completely meshed, the gear shifting operation cannot be completed, which may also affect the normal operation of the tunneling equipment as a whole, and even cause damage. Therefore, in some embodiments, the double-speed reducer gear shifting control system further comprises a position detection module for detecting the meshing state of the gears of the gear shifting cylinder 100. The detection module comprises a sensor, for example, a position sensor, a force sensor, etc., which monitors the position, movement speed or force of the gears and feeds back to the electric control module. After receiving the feedback information, the electric control module analyzes and judges. If it is detected that the gears are not completely meshed, the electric control module will control the corresponding motor to make a small movement to drive the components connected to the gears, such as the piston rod of the gear shifting cylinder 100, to make fine adjustments until the gears reach the meshing state.

[0080] The tunneling equipment of the second aspect of the present application is described below.

[0081] The tunneling equipment of the present embodiment can be a full-face hard rock tunneling machine, a cantilever tunneling machine, a rock drill, a shield tunneling machine, etc.

[0082] In combination Figure 1 , the tunneling equipment of the present embodiment can include a device body and the double-speed reducer gear shifting control system described in the above embodiments. By providing the double-speed reducer gear shifting control system described in the above embodiments, the problem of increased tunneling resistance, easy to get into trouble and inability to achieve large torque escape under complex geological conditions is solved. By introducing the double-speed reducer gear shifting control system, the switching of the tunneling equipment under different geological conditions is achieved, the adaptability and escape ability of the tunneling equipment are improved, and the safety and efficiency of tunnel construction are ensured.

[0083] The embodiments or implementations in the present specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be mutually referred to.

[0084] It should be noted that the use of "one embodiment," "an embodiment," "certain embodiments," "some embodiments," "exemplary embodiment," "one specific embodiment," "certain specific embodiments," and the like, herein, does not necessarily refer to the same embodiment, although they can. Furthermore, the description herein of one specific embodiment, or a certain number of specific embodiments, does not necessarily indicate that other specific embodiments are not included within the scope of the application.

[0085] In general, terminology can be understood at least in part from usage in context. For example, the term "one or more" as used herein, depending at least in part upon context, can be used to describe any feature, structure, or characteristic in a singular sense or can be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as "a" and "the", as used herein, can be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context.

[0086] It will be readily understood that the terms "on", "above", and "on top of", when used in the present disclosure, shall not be construed as each being limited to "directly on", but rather, can include "on", "above", or "on top of", with intervening features or layers, unless otherwise specifically stated. Furthermore, the terms "above" and "on top of", when used in the present disclosure, shall not be construed as each being limited to "above" or "on top of", with no intervening features or layers, but rather, can include "above" or "on top of", with no intervening features or layers (i.e., directly on), unless otherwise specifically stated.

[0087] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions recorded in the above embodiments, or make equivalent replacements to some or all of the technical features thereof; and such modifications or replacements do not cause the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A two-speed reduction gearbox shift control system characterized by, The application relates to a transmission oil cylinder (100) and a transmission oil supply module (200). The transmission oil cylinder (100) is arranged in parallel, each of the transmission oil cylinders (100) has a first oil port and a second oil port, a first on-off control valve (310) is arranged on the side of the first oil port of each of the transmission oil cylinders (100), and a second on-off control valve (320) is arranged on the side of the second oil port. The transmission oil supply module (200) comprises a transmission oil supply device, a hydraulic pump (210) and an adjusting valve assembly (220), the outlet of the transmission oil supply device, the hydraulic pump (210) and the adjusting valve assembly (220) are sequentially communicated through a transmission oil supply pipeline, the adjusting valve assembly (220) is communicated with the first oil ports of the plurality of transmission oil cylinders (100) through a first oil pipeline (10), the adjusting valve assembly (220) is communicated with the second oil ports of the plurality of transmission oil cylinders (100) through a second oil pipeline (20), and the adjusting valve assembly (220) is communicated with the transmission oil supply device through a transmission oil return pipeline. The transmission oil cylinder (100) is configured to switch between a low-speed gear (100a) and a high-speed gear (100b), wherein, in the high-speed gear (100b), the first oil pipeline (10) constitutes an oil injection side, and the second oil pipeline (20) constitutes an oil return side, in the low-speed gear (100a), the second oil pipeline (20) constitutes the oil injection side, and the first oil pipeline (10) constitutes the oil return side, the adjusting valve assembly (220) injects oil into the transmission oil cylinder (100) through the oil injection side and returns oil through the oil return side.

2. The two-speed reduction gearbox shift control system of claim 1, wherein, The adjusting valve assembly (220) comprises a pressure reducing valve (221), an electromagnetic reversing valve (222) and a balance valve (223) which are sequentially communicated. When the adjusting valve assembly (220) injects oil into the transmission oil cylinder (100) through the oil injection side, the hydraulic pump (210) drives the hydraulic oil in the transmission oil supply device to flow to the transmission oil cylinder (100) through the pressure reducing valve (221), the electromagnetic reversing valve (222) and the balance valve (223) in sequence, and when the transmission oil cylinder (100) returns oil to the adjusting valve assembly (220), the hydraulic oil flows to the transmission oil supply device through the balance valve (223), the electromagnetic reversing valve (222) and the transmission oil return pipeline in sequence.

3. The two-speed reduction gearbox shift control system of claim 1, wherein, Further comprising: A first pressure detection device (410) arranged on the first oil pipeline (10) to detect the pressure in the first oil pipeline (10). And / or, A second pressure detection device (420) arranged on the second oil pipeline (20) to detect the pressure in the second oil pipeline (20).

4. The two-speed reduction gearbox shift control system of claim 1, wherein, Further comprising: A first energy storage module (510) arranged on the first oil pipeline (10) to store energy or supplement pressure for the transmission oil cylinder (100) in the high-speed gear (100b); A second energy storage module (520) arranged on the second oil pipeline (20) to store energy or supplement pressure for the transmission oil cylinder (100) in the low-speed gear (100a).

5. The two-speed reduction gearbox shift control system of claim 4, wherein, The first energy storage module (510) and the second energy storage module (520) each comprise an energy accumulator (501), a third on-off control valve (502) and a third pressure detection device (503); The energy accumulator (501) of the first energy storage module (510) is communicated with the first oil path (10) through a first energy storage pipeline, and the energy accumulator (501) of the second energy storage module (520) is communicated with the second oil path (20) through a second energy storage pipeline; The third on-off control valve (502) is used for controlling the on-off of the energy accumulator (501); The third pressure detection device (503) is used for detecting the pressure of the energy accumulator (501).

6. The two-speed reduction gearbox shift control system of claim 1, wherein, The oil supply module (200) further comprises: a filtering device (230) arranged on the oil supply pipeline and located on the downstream side of the hydraulic pump (210); and / or, a fourth on-off control valve (240) arranged on the oil supply pipeline and located on the downstream side of the hydraulic pump (210) to control the on-off of the oil supply pipeline; and / or, a throttle valve (250) arranged on the oil supply pipeline and located on the downstream side of the hydraulic pump (210) to adjust the flow of the oil supply pipeline; and / or, an overflow valve (260) communicated with the outlet of the hydraulic pump (210) to adjust the pressure at the outlet of the hydraulic pump (210).

7. The two-speed reduction gearbox shift control system of claim 1, wherein, The plurality of gear shift oil cylinders (100) are independently switched between the low speed gear (100a) and the high speed gear (100b), or at least part of the plurality of gear shift oil cylinders (100) are synchronously switched between the low speed gear (100a) and the high speed gear (100b).

8. The two-speed reduction gearbox shift control system of claim 1, wherein, Further comprising: locking devices configured to lock the gear shift oil cylinder (100) when the gear shift oil cylinder (100) is in at least one of the low speed gear (100a) and the high speed gear (100b).

9. The two-speed reduction gearbox shift control system of claim 1, wherein, Further comprising a position detection module for detecting the meshing state of the gear shift oil cylinder (100) gear.

10. A tunneling apparatus, characterized by, Comprising: The double-speed reducer gear shift control system of any one of claims 1-9.

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