Main drive labyrinth seal grease continuous injection system and method for a roadheader

Abstract

The application discloses a kind of main drive labyrinth seal grease continuous injection systems and methods of heading machine, it is related to heading machine technical field;Wherein the system includes: control module, synchronous gear shunt, first pressure monitoring device being arranged at the input end of synchronous gear shunt, second pressure monitoring device being arranged at the output end of synchronous gear shunt, pressure regulating device, grease pump.The application can be by adjusting the actual pressure difference of input end and output end of synchronous gear shunt, so that synchronous gear shunt can be with preset rotational speed Stably inject grease to the main drive labyrinth seal system of heading machine, realizes control grease and stably injects heading machine main drive labyrinth seal system with injection speed.

Description

Technical Field

[0001] This invention relates to the field of tunneling machine technology, and in particular to a continuous injection system and method for labyrinth seal grease in the main drive of a tunneling machine. Background Technology

[0002] This section is intended to provide background or context for the embodiments of the invention set forth in the claims. The description herein is not an admission that it is prior art simply because it is included in this section.

[0003] The tunnel boring machine's main drive labyrinth seal system prevents impurities such as sand, soil, and water from entering the excavation chamber by injecting and extruding grease. Currently, the grease for the tunnel boring machine's main drive labyrinth seal uses an intermittent injection method. This involves injecting a fixed amount of grease into the labyrinth cavity within a timed cycle, then stopping grease injection for the rest of the cycle until the next cycle begins. This intermittent injection method results in unstable grease injection rates, leading to both grease loss and grease shortage. Grease loss results in significant grease waste; grease shortage prevents the continuous extrusion of grease to prevent impurities from entering the excavation chamber, causing the main drive seal system to malfunction. Ultimately, this leads to significant problems such as equipment damage, downtime for maintenance, and increased construction time and costs.

[0004] Currently, there is no convenient and effective solution to the problem of unstable grease injection speed in the main drive labyrinth seal system of tunneling machines. Summary of the Invention

[0005] This invention provides a continuous grease injection system for the main drive labyrinth seal of a tunneling machine, used to control the injection of grease into the main drive labyrinth seal system of the tunneling machine at a stable injection rate. The system includes:

[0006] The system comprises a control module, a synchronous gear splitter, a first pressure monitoring device located at the input end of the synchronous gear splitter, a second pressure monitoring device located at the output end of the synchronous gear splitter, a pressure regulating device, and a grease pump; wherein,

[0007] A grease pump is used to pump grease into the grease injection port of the main drive labyrinth seal system via a synchronous gear distributor.

[0008] The first pressure monitoring device is used to collect the first pressure value at the input end of the synchronous gear splitter and send the first pressure value to the control module.

[0009] The second pressure monitoring device is used to collect the second pressure value at the output end of the synchronous gear splitter and send the second pressure value to the control module.

[0010] The control module is used to receive a first pressure value sent by a first pressure monitoring device and a second pressure value sent by a second pressure monitoring device; generate pressure regulation information based on the actual pressure difference between the first pressure value and the second pressure value; and send the pressure regulation information to the pressure regulation device.

[0011] The pressure regulating device is used to receive pressure regulating information sent by the control module, and after adjusting the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, it sends grease injection information to the synchronous gear splitter.

[0012] The synchronous gear distributor is used to inject grease into the grease injection port of the main drive labyrinth seal system when it receives grease injection information from the pressure regulating device.

[0013] This invention also provides a method for continuous injection of grease into the main drive labyrinth seal system of a tunneling machine, for controlling the injection of grease into the main drive labyrinth seal system of the tunneling machine at a stable injection rate. The method includes:

[0014] The grease pump delivers grease to the grease injection port of the main drive labyrinth seal system via a synchronous gear distributor.

[0015] The first pressure monitoring device collects the first pressure value at the input end of the synchronous gear splitter and sends the first pressure value to the control module.

[0016] The second pressure monitoring device collects the second pressure value at the output end of the synchronous gear splitter and sends the second pressure value to the control module.

[0017] The control module receives a first pressure value sent by a first pressure monitoring device and a second pressure value sent by a second pressure monitoring device; generates pressure regulation information based on the first and second pressure values; and sends the pressure regulation information to the pressure regulation device.

[0018] The pressure regulating device receives pressure regulating information sent by the control module, adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, and then sends grease injection information to the synchronous gear splitter.

[0019] When the synchronous gear distributor receives the grease injection information sent by the pressure regulating device, it injects grease into the grease injection port of the main drive labyrinth seal system.

[0020] This invention provides a continuous grease injection system for the main drive labyrinth seal of a tunneling machine, comprising: a control module, a synchronous gear distributor, a first pressure monitoring device disposed at the input end of the synchronous gear distributor, a second pressure monitoring device disposed at the output end of the synchronous gear distributor, a pressure regulating device, and a grease pump; wherein, the grease pump is used to pump grease through the synchronous gear distributor to the grease injection port of the main drive labyrinth seal system; the first pressure monitoring device is used to collect a first pressure value at the input end of the synchronous gear distributor and send the first pressure value to the control module; the second pressure monitoring device is used to collect a second pressure value at the output end of the synchronous gear distributor and send the first pressure value to the control module; the second pressure monitoring device is used to collect a second pressure value at the output end of the synchronous gear distributor and send the second pressure value to the control module. The second pressure value is sent to the control module. The control module receives the first pressure value sent by the first pressure monitoring device and the second pressure value sent by the second pressure monitoring device. It generates pressure adjustment information based on the first and second pressure values ​​and sends this information to the pressure adjustment device. The pressure adjustment device receives the pressure adjustment information from the control module, adjusts the first pressure value at the input of the synchronous gear distributor according to the information, and then sends grease injection information to the synchronous gear distributor. The synchronous gear distributor, upon receiving the grease injection information from the pressure adjustment device, injects grease into the grease injection port of the main drive labyrinth seal system. This allows the synchronous gear distributor to inject grease into the main drive labyrinth seal system of the tunneling machine at a stable speed by adjusting the actual pressure difference between the input and output of the synchronous gear distributor, thus achieving stable grease injection into the main drive labyrinth seal system of the tunneling machine at a preset speed. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0022] Figure 1 This is a schematic diagram of a continuous grease injection system for the main drive labyrinth seal of a tunneling machine provided in an embodiment of the present invention;

[0023] Figure 2 This is an example diagram of a control module provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram showing the relationship between the pressure difference between the input and output ends of a synchronous gear splitter 5 and the rotational speed of the internal gears, provided in an embodiment of the present invention.

[0025] Figure 4This is a schematic diagram illustrating the control process of injecting grease into the grease injection hole in a continuous grease injection system for the main drive labyrinth seal of a tunneling machine, as provided in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of a method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine, provided in an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0028] The acquisition, storage, use, and processing of data in this application all comply with the relevant provisions of national laws and regulations.

[0029] In this document, the term "and / or" merely describes a relationship, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0030] In the description of this specification, the terms "comprising," "including," "having," and "containing" are open-ended terms, meaning that they include but are not limited to. The terms "an embodiment," "a specific embodiment," "some embodiments," and "for example," etc., refer to specific features, structures, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. The order of steps involved in the various embodiments is used to illustrate the implementation of this application, and the order of steps is not limited and can be adjusted appropriately as needed.

[0031] Research has revealed that the tunnel boring machine (TBM) main drive labyrinth seal system prevents impurities such as sand, soil, and water from entering the excavation chamber by injecting and extruding grease. Currently, the grease injection method for the TBM main drive labyrinth seal is intermittent. A fixed amount of grease is injected into the labyrinth cavity within a timed cycle, then injection stops for that cycle until the next cycle begins. This intermittent injection method results in unstable grease injection rates, leading to both grease loss and grease shortage. Grease loss results in significant waste; grease shortage prevents the continuous extrusion of grease to prevent impurities from entering the excavation chamber, causing the main drive seal system to malfunction. This ultimately leads to equipment damage, downtime for maintenance, and increased construction time and costs. Currently, there is no convenient and effective solution to the problem of unstable grease injection rates in the TBM main drive labyrinth seal system.

[0032] Regarding the above research, such as Figure 1 As shown, an embodiment of the present invention provides a continuous grease injection system for the main drive labyrinth seal of a tunneling machine, comprising:

[0033] Control module 6, synchronous gear splitter 5, first pressure monitoring device P0 installed at the input end of the synchronous gear splitter, second pressure monitoring devices (P1~P4) installed at the output end of the synchronous gear splitter, pressure regulating device 3, grease pump 1; wherein,

[0034] Grease pump 1 is used to pump grease into the grease injection port of the main drive labyrinth seal system through a synchronous gear distributor.

[0035] The first pressure monitoring device P0 is used to collect the first pressure value at the input end of the synchronous gear splitter and send the first pressure value to the control module.

[0036] The second pressure monitoring device (P1~P4) is used to collect the second pressure value at the output end of the synchronous gear splitter and send the second pressure value to the control module.

[0037] Control module 6 is used to receive a first pressure value sent by the first pressure monitoring device and a second pressure value sent by the second pressure monitoring device; generate pressure regulation information based on the actual pressure difference between the first pressure value and the second pressure value; and send the pressure regulation information to the pressure regulation device.

[0038] Pressure regulating device 3 is used to receive pressure regulating information sent by the control module, and after adjusting the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, it sends grease injection information to the synchronous gear splitter.

[0039] Synchronous gear distributor 5 is used to inject grease into the grease injection port of the main drive labyrinth seal system when it receives grease injection information sent by the pressure regulating device.

[0040] This invention provides a continuous grease injection system for the main drive labyrinth seal of a tunneling machine, comprising: a control module, a synchronous gear distributor, a first pressure monitoring device disposed at the input end of the synchronous gear distributor, a second pressure monitoring device disposed at the output end of the synchronous gear distributor, a pressure regulating device, and a grease pump; wherein, the grease pump is used to pump grease to the grease injection port of the main drive labyrinth seal system through the synchronous gear distributor; the first pressure monitoring device is used to collect a first pressure value at the input end of the synchronous gear distributor and send the first pressure value to the control module; the second pressure monitoring device is used to collect a second pressure value at the output end of the synchronous gear distributor. The second pressure value is sent to the control module. The control module receives the first pressure value sent by the first pressure monitoring device and the second pressure value sent by the second pressure monitoring device. It generates pressure adjustment information based on the first and second pressure values ​​and sends this information to the pressure adjustment device. The pressure adjustment device receives the pressure adjustment information from the control module, adjusts the first pressure value at the input of the synchronous gear distributor according to the information, and then sends grease injection information to the synchronous gear. The synchronous gear distributor, upon receiving the grease injection information from the pressure adjustment device, injects grease into the grease injection port of the main drive labyrinth seal system. This allows the synchronous gear distributor to inject grease into the main drive labyrinth seal system of the tunneling machine at a stable speed by adjusting the actual pressure difference between the input and output of the synchronous gear distributor, thus achieving stable grease injection into the main drive labyrinth seal system of the tunneling machine at a predetermined speed.

[0041] The following is a detailed introduction to the above-mentioned continuous grease injection system for the main drive labyrinth seal of the tunneling machine.

[0042] Reference Figure 1 As shown, in one embodiment of the present invention, the synchronous gear distributor is composed of multiple sets of meshing gears connected in series, with each set of gears rotating synchronously. The input end of the synchronous gear distributor is connected to a grease pump, and the output end of the synchronous gear distributor is connected to each grease injection port (e.g., ...). Figure 1 (OM1 to OM4 in the middle), the internal gear pumps the rated amount of grease for each revolution.

[0043] Here, Figure 1 The number of gears, grease injection holes, and first pressure monitoring devices in the intermediate synchronous gear splitter is merely an example and is not intended to limit the number of gears, grease injection holes, and first pressure monitoring devices described in the embodiments of the present invention. Figure 1 The number displayed.

[0044] Specifically, the control module 6 can communicate with the first pressure monitoring device and the second monitoring device via wired communication technology or wireless communication technology, such as... Figure 2 The diagram illustrates an example of a control module provided in an embodiment of the present invention. The control module includes, for example, a calculation unit and a control unit. Specifically, the calculation unit receives a first pressure value sent by a first pressure monitoring device and a second pressure value sent by a second pressure monitoring device; it calculates the actual pressure difference between the first and second pressure values. The control unit generates pressure adjustment information when the actual pressure difference is not equal to a preset pressure difference; and sends the pressure adjustment information to the pressure adjustment device. The preset pressure difference is the actual pressure difference required for the synchronous gear splitter to operate at a preset speed. The pressure adjustment device 3 receives the pressure adjustment information sent by the control module 6 and adjusts the first pressure value at the input of the synchronous gear splitter according to the pressure adjustment information, so that the actual pressure difference between the first and second pressure values ​​equals the preset pressure difference. When the actual pressure difference equals the preset pressure difference, it sends grease injection information to the synchronous gear splitter.

[0045] like Figure 3 The diagram shows the relationship between the pressure difference between the input and output ends of a synchronous gear distributor 5 and the rotational speed of its internal gears, according to an embodiment of the present invention. ΔP0 represents the actual pressure difference between the input and output ends (i.e., the first pressure value and the second pressure value) of the synchronous gear distributor 5 during continuous and stable grease injection, and n0 represents the rotational speed (preset rotational speed) of the internal gears of the synchronous gear distributor 5 during continuous and stable grease injection. In other words, by controlling the actual pressure difference between the input and output ends of the synchronous gear distributor 5, the rotational speed of the internal gears of the synchronous gear distributor 5 can be controlled. Therefore, in one embodiment of the present invention, the control module is further configured to determine the total amount of grease to be injected within one counting cycle based on the main drive speed of the tunneling machine; determine the preset number of rotations of the synchronous gear distributor within one counting cycle based on the total grease amount and the rated grease amount; determine the preset number of rotations of the synchronous gear distributor within one counting cycle as the preset rotational speed of the synchronous gear distributor; and use the actual pressure difference between the first pressure value at the input end and the second pressure value at the output end of the synchronous gear distributor at the preset rotational speed as the preset pressure difference value. In this way, as long as the actual pressure difference between the input and output ends of the synchronous gear distributor 5 is equal to the preset pressure difference, the internal gears of the synchronous gear distributor 5 can uniformly inject grease into the grease injection hole at a preset speed, ensuring that an appropriate amount of grease is injected into the grease injection hole within one counting cycle.

[0046] For example, based on the main drive speed n of the tunneling machine, the total amount of grease to be injected within one counting cycle is determined as Q. 总 Because the internal gear of the synchronous gear distributor 5 discharges a fixed amount of grease Q per revolution of the internal gear, 转 Therefore, the number of rotations of the internal gear N0 = Q总 ÷Q 转 .

[0047] In addition, refer to Figure 1 As shown, in one embodiment of the present invention, a second pressure monitoring device (e.g., ...) is provided at the output end of the synchronous gear distributor connected to each grease injection port. Figure 1 (P1 to P4 in the middle); therefore, the control module is specifically used to receive the second pressure value sent by each second pressure monitoring device; determine the minimum second pressure value, and calculate the actual pressure difference between the first pressure value and the minimum second pressure value.

[0048] For example, assuming the actual pressure difference between the input and output of the synchronous gear splitter 5 is ΔP, the actual pressure difference between the first pressure value and the minimum second pressure value can be calculated using the following formula:

[0049] △P= P0-[ P1, P2, P3, P4]min Formula (1);

[0050] Wherein, P0 is the input pressure of the synchronous gear splitter 5; P1, P2, P3, and P4 are the output pressures of the synchronous gear splitter 5, and [P1, P2, P3, P4]min is the minimum value among the second pressure values.

[0051] In addition, refer to Figure 1 As shown, in one embodiment of the present invention, it further includes: a counter 501 and a switching valve 2 disposed between the grease pump and the pressure regulating device; the counter is used to collect the number of rotations of the internal gear of the synchronous gear distributor within a counting cycle and send the number of rotations of the internal gear of the synchronous gear distributor to the control module; the control module 6 is also used to receive the number of rotations sent by the counter; when the number of rotations is less than a preset number of rotations, the control switching valve 2 is in an open state so that the grease pump 1 pumps grease through the synchronous gear distributor 5 to the grease injection holes (OM1~OM4) of the main drive labyrinth seal system; when the number of rotations is not less than the preset number of rotations, the control switching valve 2 is in a closed state so that the grease pump 1 stops pumping grease to the grease injection holes (OM1~OM4) of the main drive labyrinth seal system.

[0052] In another embodiment of the present invention, when the control module 6 controls the pressure regulating device to adjust the pressure at the input end of the synchronous gear splitter 5, the control module 6 is specifically used to generate first pressure regulation information and send the first pressure regulation information to the pressure regulating device when the actual pressure difference is greater than the preset pressure difference; and to generate second pressure regulation information and send the second pressure regulation information to the pressure regulating device when the actual pressure difference is less than the preset pressure difference. The pressure regulating device 3 is specifically used to reduce the pressure at the input end of the synchronous gear splitter when it receives the first pressure regulation information sent by the control module, so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference; and to increase the pressure at the input end of the synchronous gear splitter when it receives the second pressure regulation information sent by the control module, so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference.

[0053] For example, such as Figure 4 The diagram shows a control process for injecting grease into the grease injection hole of a tunneling machine main drive labyrinth seal grease continuous injection system according to an embodiment of the present invention. Firstly, the pressure at the input and output ends of the synchronous gear splitter is monitored by a first pressure monitoring device and a second pressure monitoring device, and the monitored pressure values ​​(first pressure value, second pressure value) are transmitted to the control module. The control module calculates ΔP according to formula (1). When the pressure difference ΔP between the input and output ends of the synchronous gear splitter is greater than ΔP0, the control module sends a grease pressure adjustment signal (first pressure adjustment signal) to the pressure adjustment device. The pressure adjustment device reduces the grease pressure at the input end of the synchronous gear splitter, causing the internal gear speed n = n0. When the pressure difference ΔP between the input and output ends of the synchronous gear splitter is less than ΔP0, the control module sends a grease pressure adjustment signal (second pressure adjustment signal) to the pressure adjustment device. The pressure adjustment device increases the grease pressure at the input end of the synchronous gear splitter, causing the internal gear speed n = n0.

[0054] This invention also provides a method for continuous injection of labyrinth seal grease into the main drive of a tunneling machine, as described in the following embodiments. This method is applied to the continuous injection system for labyrinth seal grease into the main drive of the tunneling machine described in the foregoing embodiments of this invention. Since the principle by which this method solves the problem is similar to that of the continuous injection system for labyrinth seal grease into the main drive of the tunneling machine, the implementation of this method can refer to the implementation of the continuous injection system for labyrinth seal grease into the main drive of the tunneling machine; repeated details will not be elaborated further.

[0055] like Figure 5 The diagram shown is a schematic representation of a method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine, according to an embodiment of the present invention, comprising:

[0056] S501: The grease pump delivers grease to the grease injection port of the main drive labyrinth seal system via a synchronous gear distributor.

[0057] S502: The first pressure monitoring device collects the first pressure value at the input end of the synchronous gear splitter and sends the first pressure value to the control module;

[0058] S503: The second pressure monitoring device collects the second pressure value at the output end of the synchronous gear splitter and sends the second pressure value to the control module;

[0059] S504: The control module receives a first pressure value sent by the first pressure monitoring device and a second pressure value sent by the second pressure monitoring device; generates pressure regulation information based on the first pressure value and the second pressure value; and sends the pressure regulation information to the pressure regulation device.

[0060] S505: The pressure regulating device receives the pressure regulating information sent by the control module, adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, and then sends grease injection information to the synchronous gear splitter.

[0061] S506: When the synchronous gear distributor receives the grease injection information sent by the pressure regulating device, it injects grease into the grease injection port of the main drive labyrinth seal system.

[0062] In one possible implementation, the control module generates pressure adjustment information based on the first pressure value and the second pressure value, including: the control module calculates the actual pressure difference between the first pressure value and the second pressure value, and generates pressure adjustment information when the actual pressure difference is not equal to the preset pressure difference; wherein, the preset pressure difference is the actual pressure difference required for the synchronous gear splitter to operate at a preset speed.

[0063] In one possible implementation, after the pressure regulating device adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, it sends grease injection information to the synchronous gear splitter, including: the pressure regulating device adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information so that the actual pressure difference between the first pressure value and the second pressure value is equal to a preset pressure difference; when the actual pressure difference is equal to the preset pressure difference, the device sends grease injection information to the synchronous gear splitter.

[0064] In one possible implementation, the control module generates pressure adjustment information when the actual pressure difference is not equal to a preset pressure difference; and sends the pressure adjustment information to the pressure adjustment device, including: when the actual pressure difference is greater than the preset pressure difference, the control module generates first pressure adjustment information and sends the first pressure adjustment information to the pressure adjustment device; when the actual pressure difference is less than the preset pressure difference, the control module generates second pressure adjustment information and sends the second pressure adjustment information to the pressure adjustment device; the pressure adjustment device receives the pressure adjustment information sent by the control module and adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure adjustment information so that the actual pressure difference between the first pressure value and the second pressure value equals the preset pressure difference, including: when the pressure adjustment device receives the first pressure adjustment information sent by the control module, it reduces the pressure at the input end of the synchronous gear splitter so that the actual pressure difference between the first pressure value and the second pressure value equals the preset pressure difference; when it receives the second pressure adjustment information sent by the control module, it increases the pressure at the input end of the synchronous gear splitter so that the actual pressure difference between the first pressure value and the second pressure value equals the preset pressure difference.

[0065] In one possible implementation, the method further includes: the control module determining the total amount of grease to be injected within a counting cycle based on the main drive speed of the tunneling machine; determining the preset number of rotations of the synchronous gear splitter within a counting cycle based on the total amount of grease and the rated amount of grease; determining the preset number of rotations of the synchronous gear splitter within a counting cycle as the preset speed of the synchronous gear splitter; and using the actual pressure difference between the first pressure value at the input end and the second pressure value at the output end of the synchronous gear splitter at the preset speed as the preset pressure difference value.

[0066] In one possible implementation, the control module receives a second pressure value sent by a second pressure monitoring device; calculates the actual pressure difference between the first pressure value and the second pressure value, including: the control module receiving a second pressure value sent by each second pressure monitoring device; determining the minimum second pressure value; and calculating the actual pressure difference between the first pressure value and the minimum second pressure value.

[0067] In one possible implementation, the method further includes: a counter collecting the number of rotations of the internal gears of the synchronous gear splitter within a counting cycle, and sending the number of rotations of the internal gears of the synchronous gear splitter to the control module; the control module receiving the number of rotations sent by the counter; when the number of rotations is less than a preset number of rotations, the control switch valve is in the open state, so that the grease pump can pump grease through the synchronous gear splitter to the grease injection port of the main drive labyrinth seal system; when the number of rotations is not less than the preset number of rotations, the control switch valve is in the closed state, so that the grease pump stops pumping grease to the grease injection port of the main drive labyrinth seal system.

[0068] This invention provides a continuous grease injection system for the main drive labyrinth seal of a tunneling machine, comprising: a control module, a synchronous gear distributor, a first pressure monitoring device disposed at the input end of the synchronous gear distributor, a second pressure monitoring device disposed at the output end of the synchronous gear distributor, a pressure regulating device, and a grease pump; wherein, the grease pump is used to pump grease through the synchronous gear distributor to the grease injection port of the main drive labyrinth seal system; the first pressure monitoring device is used to collect a first pressure value at the input end of the synchronous gear distributor and send the first pressure value to the control module; the second pressure monitoring device is used to collect a second pressure value at the output end of the synchronous gear distributor and send the first pressure value to the control module; the second pressure monitoring device is used to collect a second pressure value at the output end of the synchronous gear distributor and send the second pressure value to the control module. The second pressure value is sent to the control module. The control module receives the first pressure value sent by the first pressure monitoring device and the second pressure value sent by the second pressure monitoring device. It generates pressure adjustment information based on the first and second pressure values ​​and sends this information to the pressure adjustment device. The pressure adjustment device receives the pressure adjustment information from the control module, adjusts the first pressure value at the input of the synchronous gear distributor according to the information, and then sends grease injection information to the synchronous gear distributor. The synchronous gear distributor, upon receiving the grease injection information from the pressure adjustment device, injects grease into the grease injection port of the main drive labyrinth seal system. This allows the synchronous gear distributor to inject grease into the main drive labyrinth seal system of the tunneling machine at a stable speed by adjusting the actual pressure difference between the input and output of the synchronous gear distributor, thus achieving stable grease injection into the main drive labyrinth seal system of the tunneling machine at a preset speed.

[0069] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0070] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0071] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0072] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0073] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A continuous grease injection system for the main drive labyrinth seal of a tunneling machine, characterized in that, include: The system includes a control module, a synchronous gear splitter, a first pressure monitoring device installed at the input end of the synchronous gear splitter, a second pressure monitoring device installed at each output end of the synchronous gear splitter, a pressure regulating device, and a grease pump; wherein... A grease pump is used to pump grease into the grease injection port of the main drive labyrinth seal system via a synchronous gear distributor. The first pressure monitoring device is used to collect the first pressure value at the input end of the synchronous gear splitter and send the first pressure value to the control module. The second pressure monitoring device is used to collect the second pressure value at the output end of the synchronous gear splitter and send the second pressure value to the control module. The control module is used to receive a first pressure value sent by a first pressure monitoring device and a second pressure value sent by a second pressure monitoring device; generate pressure regulation information based on the first pressure value and the second pressure value; and send the pressure regulation information to the pressure regulation device. The pressure regulating device is used to receive pressure regulating information sent by the control module, and after adjusting the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, it sends grease injection information to the synchronous gear splitter. The synchronous gear distributor is used to inject grease into the grease injection port of the main drive labyrinth seal system when it receives grease injection information sent by the pressure regulating device. Among them, the output end of the synchronous gear distributor connected to each grease injection hole is equipped with a second pressure monitoring device; The control module is specifically used to receive the second pressure value sent by each second pressure monitoring device; determine the minimum second pressure value; calculate the actual pressure difference between the first pressure value and the minimum second pressure value; and generate pressure adjustment information when the actual pressure difference is not equal to the preset pressure difference.

2. The tunneling machine main drive labyrinth sealing grease continuous injection system as described in claim 1, characterized in that, The preset pressure difference value is the actual pressure difference required for the synchronous gear splitter to operate at the preset speed.

3. The tunneling machine main drive labyrinth sealing grease continuous injection system as described in claim 2, characterized in that, The pressure regulating device is specifically used to adjust the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference value. When the actual pressure difference equals the preset pressure difference, a grease injection message is sent to the synchronous gear distributor.

4. The tunneling machine main drive labyrinth sealing grease continuous injection system as described in claim 3, characterized in that, The control module is specifically used to generate first pressure adjustment information and send the first pressure adjustment information to the pressure adjustment device when the actual pressure difference is greater than the preset pressure difference; and to generate second pressure adjustment information when the actual pressure difference is less than the preset pressure difference. Send the second pressure regulation information to the pressure regulation device; The pressure regulating device is specifically used to reduce the pressure at the input end of the synchronous gear splitter when it receives the first pressure regulating information sent by the control module, so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference. Upon receiving the second pressure adjustment information sent by the control module, the pressure at the input end of the synchronous gear splitter is increased so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference value.

5. The tunneling machine main drive labyrinth sealing grease continuous injection system as described in claim 3, characterized in that, The synchronous gear distributor consists of multiple sets of meshing gears connected in series. Each set of gears rotates synchronously. The input end of the synchronous gear distributor is connected to the grease pump, and the output end of the synchronous gear distributor is connected to each grease injection hole. The internal gear pumps the rated amount of grease for each revolution.

6. The tunneling machine main drive labyrinth sealing grease continuous injection system as described in claim 5, characterized in that, The control module is also used to determine the total amount of grease to be injected within a counting cycle based on the main drive speed of the tunneling machine; and to determine the preset number of rotations of the synchronous gear distributor within a counting cycle based on the total amount of grease and the rated amount of grease. The preset number of rotations of the synchronous gear splitter within one counting cycle is determined as the preset speed of the synchronous gear splitter. The actual pressure difference between the first pressure value at the input end and the second pressure value at the output end of the synchronous gear splitter at a preset speed is taken as the preset pressure difference value.

7. The tunneling machine main drive labyrinth sealing grease continuous injection system as described in claim 1, characterized in that, Also includes: Counter; switch valve installed between the grease pump and the pressure regulating device; The counter is used to collect the number of rotations of the internal gears of the synchronous gear splitter within a counting cycle and send the number of rotations of the internal gears of the synchronous gear splitter to the control module. The control module is also used to receive the number of rotations sent by the counter; when the number of rotations is less than the preset number of rotations, the control switch valve is in the open state, so that the grease pump can pump grease to the grease injection port of the main drive labyrinth seal system through the synchronous gear distributor; when the number of rotations is not less than the preset number of rotations, the control switch valve is in the closed state, so that the grease pump can stop pumping grease to the grease injection port of the main drive labyrinth seal system.

8. A method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine, characterized in that, The system is applied to the continuous grease injection system for the main drive labyrinth seal of a tunneling machine as described in any one of claims 1 to 7, comprising: The grease pump delivers grease to the grease injection port of the main drive labyrinth seal system via a synchronous gear distributor. The first pressure monitoring device collects the first pressure value at the input end of the synchronous gear splitter and sends the first pressure value to the control module. The second pressure monitoring device collects the second pressure value at the output end of the synchronous gear splitter and sends the second pressure value to the control module. The control module receives a first pressure value sent by a first pressure monitoring device and a second pressure value sent by a second pressure monitoring device; generates pressure regulation information based on the first and second pressure values; and sends the pressure regulation information to the pressure regulation device. The pressure regulating device receives pressure regulating information sent by the control module, adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, and then sends grease injection information to the synchronous gear splitter. When the synchronous gear distributor receives the grease injection information sent by the pressure regulating device, it injects grease into the grease injection port of the main drive labyrinth seal system. The control module receives a second pressure value from the second pressure monitoring device; and calculates the actual pressure difference between the first pressure value and the second pressure value, including: The control module receives the second pressure value sent by each second pressure monitoring device; determines the minimum second pressure value; calculates the actual pressure difference between the first pressure value and the minimum second pressure value; and generates pressure adjustment information when the actual pressure difference is not equal to the preset pressure difference.

9. The method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine as described in claim 8, characterized in that, The control module generates pressure regulation information based on the first pressure value and the second pressure value, including: The control module calculates the actual pressure difference between the first pressure value and the second pressure value. When the actual pressure difference is not equal to the preset pressure difference, pressure adjustment information is generated. The preset pressure difference is the actual pressure difference required for the synchronous gear splitter to operate at a preset speed.

10. The method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine as described in claim 9, characterized in that, After adjusting the first pressure value at the input end of the synchronous gear splitter according to the pressure adjustment information, the pressure regulating device sends grease injection information to the synchronous gear splitter, including: The pressure regulating device adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference value; when the actual pressure difference is equal to the preset pressure difference value, the device sends grease injection information to the synchronous gear splitter.

11. The method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine as described in claim 10, characterized in that, When the actual pressure difference is not equal to the preset pressure difference, the control module generates pressure adjustment information. Sending pressure regulation information to the pressure regulating device includes: When the actual pressure difference is greater than the preset pressure difference, the control module generates first pressure adjustment information and sends it to the pressure adjustment device; when the actual pressure difference is less than the preset pressure difference, it generates second pressure adjustment information and sends it to the pressure adjustment device. The pressure regulating device receives pressure regulating information sent by the control module and adjusts the first pressure value at the input end of the synchronous gear splitter according to the pressure regulating information, so that the actual pressure difference between the first pressure value and the second pressure value equals the preset pressure difference value, including: When the pressure regulating device receives the first pressure regulating information sent by the control module, it reduces the pressure at the input end of the synchronous gear splitter so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference; when it receives the second pressure regulating information sent by the control module, it increases the pressure at the input end of the synchronous gear splitter so that the actual pressure difference between the first pressure value and the second pressure value is equal to the preset pressure difference.

12. The method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine as described in claim 10, characterized in that, Also includes: The control module determines the total amount of grease to be injected within a counting cycle based on the main drive speed of the tunneling machine; Based on the total grease quantity and the rated grease quantity, determine the preset number of rotations of the synchronous gear shunt within one counting cycle; The preset number of rotations of the synchronous gear splitter within one counting cycle is determined as the preset speed of the synchronous gear splitter. The actual pressure difference between the first pressure value at the input end and the second pressure value at the output end of the synchronous gear splitter at a preset speed is taken as the preset pressure difference value.

13. The method for continuous injection of sealing grease into the main drive labyrinth of a tunneling machine as described in claim 8, characterized in that, Also includes: The counter collects the number of rotations of the internal gears of the synchronous gear shunt within one counting cycle and sends the number of rotations of the internal gears of the synchronous gear shunt to the control module. The control module receives the number of rotations sent by the counter; when the number of rotations is less than the preset number of rotations, the control switch valve is in the open state, so that the grease pump can pump grease to the grease injection port of the main drive labyrinth seal system through the synchronous gear distributor; when the number of rotations is not less than the preset number of rotations, the control switch valve is in the closed state, so that the grease pump can stop pumping grease to the grease injection port of the main drive labyrinth seal system.

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