Automatic lubricating system for torque beam
By designing an automatic lubrication system for torque beams, the grease delivery is automatically controlled by the action of the propulsion cylinder, the problem of manpower waste caused by artificial lubrication is solved, and an efficient and man-saving automatic lubrication effect is achieved.
Patent Information
- Application Number
- CN202421010037.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-05-10
AI Technical Summary
In the prior art, the lubrication of torque beams relies on manual operation, resulting in waste of manpower and inefficiency.
An automatic lubrication system is designed, including a grease storage conveyor and a grease injection valve. By using the propulsion and resetting action of the propulsion cylinder, the automatic lubrication between the torque cylinder and the torque beam is achieved through the oil inlet pressure control with the rod cavity and the rod cavity.
It realizes automatic lubrication of torque beams without manual intervention, saves human resources, and avoids the waste of grease through quantitative grease use.
Smart Images
Figure CN222703057U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of roadheaders, and in particular to an automatic lubrication system for a torque beam. Background Art
[0002] The torque beam structure is an anti-twist device for full-section hard rock tunnel boring machines to prevent excessive torsion of the shield. The torque beam structure is mainly composed of a torque beam and a torque cylinder moving on the torque beam. The torque cylinder generates a counter-torque that can resist the cutterhead cutting the rock, thereby preventing the shield from excessive deflection. When the thrust cylinder moves, the torque cylinder must slide on the torque beam. During this process, the friction force generated between the torque cylinder and the torque beam is very large. This friction force is completely converted into the radial force borne by the torque cylinder. In order to reduce the radial force borne by the cylinder, lubrication is required between the torque cylinder and the torque beam.
[0003] The torque beam lubrication in the related technology usually adopts manual lubrication, which is divided into manual centralized lubrication and surface grease lubrication. Manual centralized lubrication is to lead the grease injection holes of the boot plate of all torque cylinders to the same place through pipelines, and manually inject grease into the pipeline to achieve lubrication of the torque beam; while surface grease lubrication is to manually apply grease on the surface of the torque beam and the boot plate of the torque cylinder when the torque beam stops working; manual lubrication wastes manpower. Utility Model Content
[0004] The present application provides an automatic lubrication system for a torque beam, which is used to solve the technical problem that the related art uses manual lubrication to waste manpower.
[0005] The present application provides an automatic lubrication system for a torque beam of a roadheader, comprising a grease storage and conveying member and a grease injection valve, wherein the grease storage and conveying member is used to store and convey grease, the grease injection valve comprises a rod chamber and a rodless chamber, the rod chamber is used to communicate with the rodless oil chamber of a propulsion oil cylinder, the rodless chamber is used to communicate with the rod oil chamber of the propulsion oil cylinder, the grease injection valve comprises a temporary storage member and a connecting member, the temporary storage member comprises a lubrication chamber for storing grease for single lubrication;
[0006] The rod chamber is configured such that, when the thrust cylinder is advanced, the oil inflow connects the connecting piece to the grease storage and conveying piece and the lubrication chamber, and the grease storage and conveying piece conveys part of the grease to the lubrication chamber for temporary storage; the rodless chamber is configured such that, when the thrust cylinder is reset, the oil inflow closes the conveying between the grease storage and conveying piece and the lubrication chamber, and the grease temporarily stored in the lubrication chamber is conveyed to the grease injection hole of the torque cylinder by means of the oil inlet pressure of the rodless chamber.
[0007] In some embodiments, the temporary storage part includes a grease injection core valve, which includes a first connecting end. When oil enters the rod chamber, the first connecting end is located in the grease injection core valve and moves by relying on the oil inlet pressure of the rod chamber to connect the lubrication chamber with the connecting part. When oil enters the rodless chamber, the first connecting end is located in the grease injection core valve and moves by relying on the oil inlet pressure of the rodless chamber to close the delivery between the lubrication chamber and the connecting part.
[0008] In some embodiments, the connecting part includes a grease replenishing core valve, which includes a second connecting end. When oil enters the rod chamber, the second connecting end is located in the grease replenishing core valve and moves by relying on the oil inlet pressure of the rod chamber to connect the grease storage conveying part and the lubrication chamber. When oil enters the rodless chamber, the second connecting end is located in the grease replenishing core valve and moves by relying on the oil inlet pressure of the rodless chamber to close the conveying between the grease storage conveying part and the lubrication chamber.
[0009] In some embodiments, a linkage is provided between the first connecting end and the second connecting end, and the linkage is used to drive the first connecting end and the second connecting end to move simultaneously by relying on the oil inlet pressure when oil is introduced into the rod cavity or the rodless cavity.
[0010] In some embodiments, the linkage member includes a mechanical connecting rod, and the mechanical connecting rod is used to drive the first connecting end and the second connecting end to move simultaneously when oil enters the rod cavity or the rodless cavity.
[0011] In some embodiments, a stroke limiter is provided on the grease injection core valve, and the stroke limiter is used to adjust the size of the lubrication cavity.
[0012] In some embodiments, the grease storage and conveying component includes a lubrication pump, and a piston is slidably arranged inside the lubrication pump, and the piston is used to separate the lubrication pump into a storage chamber and a driving chamber. The rod oil chamber and the rodless oil chamber are both connected to the driving chamber, and the thrust cylinder drives the piston to convey the grease in the storage chamber to the connecting component by relying on the oil inlet pressure in the driving chamber when advancing or resetting.
[0013] In some embodiments, a shuttle valve is also included, which includes a first oil inlet end, a second oil inlet end and an oil outlet end, the first oil inlet end is used to communicate with the rodless oil chamber, the second oil inlet end is used to communicate with the rod oil chamber, and the lubrication pump is provided with an oil inlet pipe, one end of the oil inlet pipe is connected to the drive chamber, and the other end is connected to the oil outlet end.
[0014] In some embodiments, the lubrication pump is provided with a grease replenishing tube, the grease replenishing tube is used to communicate with the storage cavity, and the grease replenishing tube is used to replenish grease into the storage cavity.
[0015] In some embodiments, a distributor is also included, which is used to receive the grease output from the lubrication cavity and distribute the grease to multiple grease injection holes of the torque cylinder.
[0016] The automatic lubrication system for the torque beam of a tunnel boring machine provided by the present application has the following characteristics: when the propulsion cylinder is advanced, oil flows into the rodless oil chamber of the propulsion cylinder; because the rodless oil chamber is connected with the rod chamber, oil flows into the rod chamber of the grease injection valve, driving the connecting piece to connect the grease storage conveying piece and the lubrication chamber; at this time, the propulsion cylinder conveys part of the lubricating oil in the grease storage conveying piece along the connecting piece to the lubrication chamber of the temporary storage piece for temporary storage; when the propulsion cylinder is reset, oil flows into the rod oil chamber of the propulsion cylinder; because the rod oil chamber is connected with the rodless chamber, oil flows into the rodless chamber of the grease injection valve, driving the connecting piece to close the connection between the grease storage conveying piece and the lubrication chamber; at the same time, the propulsion cylinder The oil inlet pressure in the rod oil chamber in the cylinder can transport the grease temporarily stored in the lubrication chamber to the grease injection hole for lubrication; the temporary storage part is used to extract the grease required for a single lubrication in a quantitative manner, thereby preventing waste due to excessive grease; the connecting part is used to cut off the connection between the grease storage and conveying part and the lubrication chamber when the thrust cylinder is reset, thereby preventing excessive grease from being transported to the lubrication chamber, further realizing quantitative lubrication; the entire process utilizes the advancement and resetting of the thrust cylinder of the shield machine to automatically realize the lubrication between the torque cylinder and the torque beam, without the need for manual lubrication, thus saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0018] Figure 1 A schematic structural diagram of an automatic lubrication system for a torque beam of a tunnel boring machine provided in an embodiment of the present application.
[0019] Description of reference numerals:
[0020] 100, grease storage and conveying member; 110, piston; 111, storage chamber; 112, driving chamber; 120, oil inlet pipe; 130, grease supply pipe;
[0021] 200, grease injection valve; 210, rod chamber; 220, rodless chamber;
[0022] 230, temporary storage member; 231, lubrication chamber; 232, first connecting end; 240, connecting member; 241, second connecting end; 250, linkage member;
[0023] 300, propulsion cylinder; 310, rod oil chamber; 320, rodless oil chamber;
[0024] 400, shuttle valve; 410, first oil inlet end; 420, second oil inlet end; 430, oil outlet end;
[0025] 500, distributor;
[0026] 600, torque cylinder;
[0027] 700. Torque beam.
[0028] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0029] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.
[0030] First, the terms involved in this application are explained:
[0031] Shield machine: a tunnel boring machine that uses the shield method; the shield construction method is that the tunnel boring machine constructs (lays) the tunnel's "shield" (referring to the supporting segments) while excavating.
[0032] Shield machine propulsion system: The shield machine mainly includes propulsion mechanism, cutterhead system, soil conveying system and support system; the propulsion mechanism is usually composed of main propulsion cylinder, auxiliary propulsion cylinder and propulsion gear; the main propulsion cylinder provides propulsion force through the hydraulic system to push the shield machine forward.
[0033] Torque beam structure: It is an anti-twist device for full-section hard rock tunnel boring machines to prevent excessive torsion of the shield. The torque beam structure is mainly composed of a torque beam and a torque cylinder moving on the torque beam. The torque cylinder generates a counter-torque that can resist the cutterhead cutting the rock, thereby preventing excessive deflection of the shield.
[0034] As described in the background technology, the torque beam lubrication in the related technology usually adopts manual lubrication, and manual lubrication is divided into manual centralized lubrication and surface grease lubrication. Manual centralized lubrication is to lead the grease injection holes of the boot plate of all torque cylinders to the same place through pipelines, and manually inject grease into the pipeline to achieve lubrication of the torque beam; while surface grease lubrication is to manually apply grease on the surface of the torque beam and the boot plate of the torque cylinder when the torque beam stops working; the use of manual lubrication wastes manpower.
[0035] In view of the above technical problems, an embodiment of the present application provides an automatic lubrication system for a torque beam of a tunnel boring machine. When the thrust cylinder is advanced, oil is introduced into the rodless oil chamber of the thrust cylinder, so that oil is introduced into the rod chamber and the drive chamber. The rod chamber can drive the first connecting end and the second connecting end to move, so that the grease replenishing core valve connects the storage chamber and the lubrication chamber. Part of the grease in the storage chamber is transported to the lubrication chamber along the grease replenishing core valve for temporary storage by relying on the oil inlet pressure. When the thrust cylinder is reset, oil is introduced into the rod oil chamber of the thrust cylinder, so that oil is introduced into the rodless chamber and the drive chamber. The rodless chamber can drive the first connecting end and the second connecting end to move, so that the grease replenishing core valve blocks the storage chamber and the lubrication chamber. The lubrication chambers are connected, and even if the grease in the storage chamber has pressure, it cannot be transported toward the grease replenishing core valve. The grease in the lubrication chamber is transported to the distributor by relying on the oil inlet pressure of the rodless chamber, and the grease is evenly distributed to the grease injection holes of each torque cylinder through the distributor. The whole process utilizes the advancement and resetting of the shield machine's thrust cylinder to automatically achieve lubrication between the torque cylinder and the torque beam, without the need to add other additional electrical control systems and without the need to write specific programs. By utilizing the advancement and resetting of the thrust cylinder, lubrication is automatically achieved mechanically, with a simple structure and no need for manual lubrication, thereby saving manpower.
[0036] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.
[0037] like Figure 1 As shown, an automatic lubrication system for a torque beam of a tunnel boring machine includes a grease storage and conveying member 100 and a grease injection valve 200. The grease storage and conveying member 100 is used to store and convey grease. The grease injection valve 200 includes a rod chamber 210 and a rodless chamber 220. The rod chamber 210 is used to communicate with the rodless oil chamber 320 of the propulsion cylinder 300. The rodless chamber 220 is used to communicate with the rod oil chamber 310 of the propulsion cylinder 300. The grease injection valve 200 includes a temporary storage member 230 and a connecting member 240. The temporary storage member 230 includes a lubrication chamber 231 for storing grease for single lubrication.
[0038] The rod chamber 210 is configured such that, when the thrust cylinder 300 is pushed forward, the oil inlet connects the connecting piece 240 to the grease storage and conveying piece 100 and the lubrication chamber 231, and the grease storage and conveying piece 100 conveys part of the grease to the lubrication chamber 231 for temporary storage; the rodless chamber 220 is configured such that, when the thrust cylinder 300 is reset, the oil inlet closes the conveying between the grease storage and conveying piece 100 and the lubrication chamber 231, and the grease temporarily stored in the lubrication chamber 231 is conveyed to the grease injection hole of the torque cylinder 600 by means of the oil inlet pressure of the rodless chamber 220.
[0039] In the present embodiment, automatic lubrication is achieved by the advancement and resetting of the thrust cylinder 300. In other embodiments, the thrust cylinder 300 may also be other actuators on the shield machine, such as a support shoe cylinder, etc. In the present embodiment, only a single grease injection valve 200 is used to realize the grease delivery to each grease injection hole. In other embodiments, multiple grease injection valves 200 may be connected in parallel to realize the delivery of grease with a larger flow rate.
[0040] By adopting the above technical solution, when the propulsion cylinder 300 is advanced, the rodless oil chamber 320 of the propulsion cylinder 300 is filled with oil. Since the rodless oil chamber 320 is connected with the rod chamber 210, the rod chamber 210 of the grease injection valve 200 is filled with oil, driving the connecting piece 240 to connect the grease storage and conveying part 100 and the lubrication chamber 231. At this time, the propulsion cylinder 300 conveys part of the lubricating oil in the grease storage and conveying part 100 along the connecting piece 240 to the lubrication chamber 231 of the temporary storage part 230 for temporary storage; when the propulsion cylinder 300 is reset, the rod oil chamber 310 of the propulsion cylinder 300 is filled with oil. Since the rod oil chamber 310 is connected with the rodless chamber 220, the rodless chamber 220 of the grease injection valve 200 is filled with oil, driving the connecting piece 240 to close the grease storage and conveying part 100 and the lubrication chamber 231. The connection between them is achieved. At the same time, the oil inlet pressure in the rod oil chamber 310 in the thrust cylinder 300 can transport the grease temporarily stored in the lubrication chamber 231 to the grease injection hole for lubrication; the temporary storage part 230 is adopted to quantitatively extract the grease required for a single lubrication, thereby preventing waste due to excessive grease; the connecting part 240 is adopted to cut off the connection between the grease storage and conveying part 100 and the lubrication chamber 231 when the thrust cylinder 300 is reset, thereby preventing excessive grease from being transported into the lubrication chamber 231, and further realizing quantitative lubrication; the entire process utilizes the advancement and resetting of the shield machine thrust cylinder 300 to automatically realize the lubrication between the torque cylinder 600 and the torque beam 700, without the need for manual lubrication, thereby saving manpower.
[0041] like Figure 1As shown, the temporary storage part 230 includes a grease injection core valve, which includes a first connecting end 232. When oil enters the rod chamber 210, the first connecting end 232 is located in the grease injection core valve and moves by relying on the oil inlet pressure of the rod chamber 210 to connect the lubrication chamber 231 with the connecting piece 240. When oil enters the rodless chamber 220, the first connecting end 232 is located in the grease injection core valve and moves by relying on the oil inlet pressure of the rodless chamber 220 to close the transmission between the lubrication chamber 231 and the connecting piece 240.
[0042] By adopting the above technical solution, when oil flows into the rodless oil chamber 320 of the thrust cylinder 300, the rod chamber 210 is connected with the rodless oil chamber 320, so that oil flows into the rod chamber 210. At this time, the first connecting end 232 moves by relying on the oil inlet pressure of the rod chamber 210, so that the first connecting end 232 can connect the lubrication chamber 231 and the connecting piece 240; when oil flows into the rod oil chamber 310 of the thrust cylinder 300, the rodless chamber 220 is connected with the rod oil chamber 310, so that oil flows into the rodless chamber 220. At this time, the first connecting end 232 moves by relying on the oil inlet pressure of the rod chamber 210, so that the first connecting end 232 can connect the lubrication chamber 231 and the connecting piece 240. 232 relies on the oil inlet pressure of the rodless chamber 220 to move, so that the first connecting end 232 can close the delivery between the lubrication chamber 231 and the connecting piece 240; the first connecting end 232 relies on the oil inlet pressure of the rod chamber 210 and the rodless chamber 220 to move, without adding other additional electrical control systems, and without writing specific programs. By utilizing the propulsion and resetting of the propulsion cylinder 300, the connection and blocking between the lubrication chamber 231 and the connecting piece 240 are automatically achieved in a mechanical way, and the structure is simple.
[0043] like Figure 1 As shown, the connecting piece 240 includes a fat replenishing core valve, which includes a second connecting end 241. When oil enters the rod chamber 210, the second connecting end 241 is located in the fat replenishing core valve and moves by relying on the oil inlet pressure of the rod chamber 210 to connect the fat storage conveying piece 100 and the lubrication chamber 231. When oil enters the rodless chamber 220, the second connecting end 241 is located in the fat replenishing core valve and moves by relying on the oil inlet pressure of the rodless chamber 220 to close the conveying between the fat storage conveying piece 100 and the lubrication chamber 231.
[0044] By adopting the above technical solution, when oil is introduced into the rodless oil chamber 320 of the propulsion cylinder 300, the rod chamber 210 is connected with the rodless oil chamber 320, so that oil is introduced into the rod chamber 210. At this time, the second connecting end 241 moves by relying on the oil inlet pressure of the rod chamber 210, so that the second connecting end 241 can connect the grease storage conveying member 100 with the lubrication chamber 231. At this time, the grease storage conveying member 100 can convey part of the grease to the lubrication chamber 231 for temporary storage. When oil is introduced into the rod oil chamber 310 of the propulsion cylinder 300, the rodless chamber 220 is connected with the rod oil chamber 310, so that oil is introduced into the rodless chamber 220. At this time, The second connecting end 241 moves by relying on the oil inlet pressure of the rodless chamber 220, so that the second connecting end 241 can close the transportation between the grease storage conveying member 100 and the lubrication chamber 231, thereby preventing excessive grease from being transported into the lubrication chamber 231; the second connecting end 241 moves by relying on the oil inlet pressure of the rod chamber 210 and the rodless chamber 220, without adding other additional electrical control systems, and without writing specific programs. By utilizing the propulsion and resetting of the propulsion cylinder 300, the connection and blocking between the lubrication chamber 231 and the connecting member 240 are automatically achieved in a mechanical manner, and the structure is simple.
[0045] like Figure 1 As shown, a connecting member 250 is provided between the first connecting end 232 and the second connecting end 241 , and the connecting member 250 is used to drive the first connecting end 232 and the second connecting end 241 to move simultaneously by relying on the oil inlet pressure when oil is introduced into the rod cavity 210 or the rodless cavity 220 .
[0046] By adopting the above-mentioned technical solution, the setting of the connecting member 250 can realize the simultaneous driving of the first connecting end 232 and the second connecting end 241, so that there is no need to connect the rod chamber 210 and the rodless chamber 220 to the first connecting end 232 and the second connecting end 241 respectively, thereby further improving the opening and closing effect of the connection and closure between the fat storage conveying member 100 and the lubrication chamber 231.
[0047] like Figure 1 As shown, the linkage 250 includes a mechanical connecting rod, which is used to drive the first connecting end 232 and the second connecting end 241 to move simultaneously when oil enters the rod chamber 210 or the rodless chamber 220 .
[0048] In this embodiment, the mechanical connecting rod includes a first connecting rod, a second connecting rod and a third connecting rod. The first connecting rod, the second connecting rod and the third connecting rod are fixed together. The first connecting rod is arranged on the first connecting end 232, the second connecting rod is arranged on the second connecting end 241, and the third connecting rod is a rod in the rodless chamber 220 and the rod chamber 210. When oil enters the rodless chamber 220, the third connecting rod moves toward the outside, so that the third connecting rod drives the first connecting rod and the second connecting rod to move at the same time; when oil enters the rod chamber 210, the third connecting rod moves toward the inside, so that the third connecting rod drives the first connecting rod and the second connecting rod to move at the same time.
[0049] By adopting the above technical solution, the setting of a mechanical connecting rod can enable the first connecting end 232 and the second connecting end 241 to achieve the connection and closure between the lubrication chamber 231 and the fat storage conveying member 100 by mechanical means, without adding other additional electrical control systems and without writing specific programs. By utilizing the propulsion and resetting of the propulsion cylinder 300, the movement of the first opening and closing end and the second opening and closing end is automatically achieved mechanically, thereby achieving the connection and blocking between the lubrication chamber 231 and the connecting member 240, and the structure is simple.
[0050] like Figure 1 As shown, a stroke limiter (not shown in the figure) is provided on the grease injection core valve, and the stroke limiter is used to adjust the size of the lubrication cavity 231.
[0051] In this embodiment, the stroke limiter includes a screw and a plate body. The plate body is slidably arranged in the lubrication cavity 231 and is sealed on all sides of the plate body to the inner wall of the lubrication cavity 231. The plate body is connected to one end of the screw rod, and the other end of the screw rod is located outside the lubrication cavity 231. When the screw rod is driven to be twisted on the grease injection core valve, the screw rod can drive the plate body located in the lubrication cavity 231 to move, so that the plate body changes the size of the lubrication cavity 231.
[0052] By adopting the above technical solution, the size of the lubrication chamber 231 can be controlled by setting a stroke limiter, so that the lubrication chamber 231 can temporarily store different amounts of grease, so that different amounts of grease can be transported to locations with different grease requirements, thereby improving the lubrication effect.
[0053] like Figure 1 As shown, the grease storage and conveying member 100 includes a lubrication pump, and a piston 110 is slidably arranged inside the lubrication pump. The piston 110 is used to separate the lubrication pump into a storage chamber 111 and a driving chamber 112. The rod oil chamber 310 and the rodless oil chamber 320 are both connected to the driving chamber 112. When the thrust cylinder 300 is thrusted or reset, it drives the piston 110 to convey the grease in the storage chamber 111 to the connecting member 240 by relying on the oil inlet pressure in the driving chamber 112.
[0054] By adopting the above technical solution, when the rod oil chamber 310 and the rodless oil chamber 320 of the thrust cylinder 300 are filled with oil, the driving chamber 112 is connected with the rod oil chamber 310 and the rodless oil chamber 320, so that the driving chamber 112 is filled with oil, and the piston 110 relies on the oil inlet pressure in the driving chamber 112 to drive the piston 110 to squeeze the storage chamber 111, so that the grease in the storage chamber 111 is transported to the lubrication chamber 231 along the connecting piece 240; by connecting the driving chamber 112 with the rod oil chamber 310 and the rodless oil chamber 320, there is no need to add other additional electrical control systems, and there is no need to write specific programs. By utilizing the advancement and resetting of the thrust cylinder 300, the transportation of grease in the storage chamber 111 is achieved in a mechanical way, and the structure is simple.
[0055] like Figure 1 As shown, the automatic lubrication system for the torque beam of the tunnel boring machine also includes a shuttle valve 400, which includes a first oil inlet end 410, a second oil inlet end 420 and an oil outlet end 430. The first oil inlet end 410 is used to communicate with the rodless oil chamber 320, and the second oil inlet end 420 is used to communicate with the rod oil chamber 310. The lubrication pump is provided with an oil inlet pipe 120, one end of the oil inlet pipe 120 is connected to the drive chamber 112, and the other end is connected to the oil outlet end 430.
[0056] In this embodiment, the shuttle valve 400 is a straight-stroke valve in which a valve body and an actuator are integrated into one body; the shuttle valve 400 belongs to the prior art, and its specific structure will not be described in detail.
[0057] By adopting the above technical scheme, when the rod oil chamber 310 of the thrust cylinder 300 is filled with oil, the second oil inlet end 420 is opened, so that the second oil inlet end 420, the oil outlet end 430, the oil inlet pipe 120 and the drive chamber 112 are connected, and the first oil inlet end 410 is in a closed state at this time; when the rodless oil chamber 320 of the thrust cylinder 300 is filled with oil, the first oil inlet end 410 is opened, so that the first oil inlet end 410, the oil outlet end 430, the oil inlet pipe 120 and the drive chamber 112 are connected, and the second oil inlet end 420 is in a closed state at this time; the shuttle valve 400 is set, so that the pressure in the drive chamber 112 is maintained to realize the delivery of grease, so that the entire automatic lubrication system has better stability and responsiveness during operation.
[0058] like Figure 1 As shown, the lubrication pump is provided with a grease replenishing tube 130, which is used to communicate with the storage chamber 111 and replenish grease into the storage chamber 111. In this embodiment, a valve is provided on the grease replenishing tube 130, which can be a manual valve or an automatic valve. The valve can realize the opening and closing of the grease replenishing tube 130 to prevent other dust or impurities from entering the storage chamber 111 along the grease replenishing tube 130.
[0059] By adopting the above technical solution, the provision of the grease replenishing tube 130 facilitates replenishing the grease in the storage chamber 111 after the grease in the storage chamber 111 is used up, without the need to replace the entire lubrication pump.
[0060] like Figure 1 As shown, the automatic lubrication system for the torque beam of the tunnel boring machine also includes a distributor 500, which is used to receive the grease output from the lubrication chamber 231 and distribute the grease to multiple grease injection holes of the torque cylinder 600; in this embodiment, the distributor 500 is a device used in the lubrication system, and the main function of the distributor 500 is to distribute the grease to various lubrication points to ensure the normal operation of the machine; the principle of the distributor 500 is to transport the grease to various lubrication points through a series of pipes and valves, thereby achieving lubrication of the machine. The distributor 500 is a prior art and its specific structure will not be described in detail.
[0061] In this embodiment, a separate grease injection valve 200 and a separate distributor 500 are used to deliver grease. In other embodiments, multiple grease injection valves 200 and multiple distributors 500 can be combined in different ways to deliver grease with different flow rates to multiple grease injection holes.
[0062] When the propulsion cylinder 300 is advanced, the rodless oil chamber 320 of the propulsion cylinder 300 is filled with oil, so that the rod chamber 210 and the drive chamber 112 are filled with oil, and the rod chamber 210 can drive the first connecting end 232 and the second connecting end 241 to move, so that the grease replenishing core valve is connected to the storage chamber 111 and the lubrication chamber 231, and part of the grease in the storage chamber 111 is transported to the lubrication chamber 231 along the grease replenishing core valve by relying on the oil inlet pressure for temporary storage. When the propulsion cylinder 300 is reset, the rodless oil chamber 310 of the propulsion cylinder 300 is filled with oil, so that the rodless chamber 220 and the drive chamber 112 are filled with oil, and the rodless chamber 220 can drive the first connecting end 232 and the second connecting end 241 to move, so that the grease replenishing core valve blocks the storage chamber 111 and the lubrication chamber. 231 are connected, and even if the grease in the storage chamber 111 is pressurized, it cannot be transported toward the grease replenishing core valve, and the grease in the lubrication chamber 231 is transported to the distributor 500 by relying on the oil inlet pressure of the rodless chamber 220, and the grease is evenly distributed to the grease injection holes of each torque cylinder 600 through the distributor 500; the whole process utilizes the advancement and resetting of the shield machine's propulsion cylinder 300 to automatically achieve lubrication between the torque cylinder 600 and the torque beam 700, without adding other additional electrical control systems, and without writing specific programs, by utilizing the advancement and resetting of the propulsion cylinder 300, lubrication is automatically achieved mechanically, the structure is simple, and no manual lubrication is required, thereby saving manpower.
[0063] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.
[0064] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. An automatic lubrication system for a torque beam of a tunnel boring machine, characterized in that: The invention comprises a grease storage and conveying member (100) and a grease injection valve (200), wherein the grease storage and conveying member (100) is used to store and convey lubricating grease, and the grease injection valve (200) comprises a rod chamber (210) and a rodless chamber (220), wherein the rod chamber (210) is used to communicate with a rodless oil chamber (320) of a propulsion oil cylinder (300), and the rodless chamber (220) is used to communicate with a rod oil chamber (310) of the propulsion oil cylinder (300), and the grease injection valve (200) comprises a temporary storage member (230) and a connecting member (240), and the temporary storage member (230) comprises a lubricating chamber (231) for storing lubricating grease for single lubrication; The rod chamber (210) is configured such that, when the propulsion cylinder (300) is advanced, the oil inflow connects the connecting piece (240) to the grease storage and conveying piece (100) and the lubrication chamber (231), and the grease storage and conveying piece (100) conveys part of the grease to the lubrication chamber (231) for temporary storage; the rodless chamber (220) is configured such that, when the propulsion cylinder (300) is reset, the oil inflow closes the conveyance between the grease storage and conveying piece (100) and the lubrication chamber (231), and the grease temporarily stored in the lubrication chamber (231) is conveyed to the grease injection hole of the torque cylinder (600) by means of the oil inlet pressure of the rodless chamber (220).
2. The automatic lubrication system for the torque beam of a tunnel boring machine according to claim 1, characterized in that: The temporary storage part (230) includes a grease injection core valve, and the grease injection core valve includes a first connecting end (232). When oil is introduced into the rod chamber (210), the first connecting end (232) is located in the grease injection core valve and moves by relying on the oil inlet pressure of the rod chamber (210) to connect the lubrication chamber (231) with the connecting part (240). When oil is introduced into the rodless chamber (220), the first connecting end (232) is located in the grease injection core valve and moves by relying on the oil inlet pressure of the rodless chamber (220) to close the transmission between the lubrication chamber (231) and the connecting part (240).
3. The automatic lubrication system for the torque beam of a tunnel boring machine according to claim 2, characterized in that: The connecting piece (240) includes a fat replenishing core valve, and the fat replenishing core valve includes a second connecting end (241). When oil enters the rod chamber (210), the second connecting end (241) is located in the fat replenishing core valve and moves by relying on the oil inlet pressure of the rod chamber (210) to connect the fat storage conveying piece (100) and the lubrication chamber (231). When oil enters the rodless chamber (220), the second connecting end (241) is located in the fat replenishing core valve and moves by relying on the oil inlet pressure of the rodless chamber (220) to close the conveying between the fat storage conveying piece (100) and the lubrication chamber (231).
4. The automatic lubrication system for the torque beam of a tunnel boring machine according to claim 3, characterized in that: A linkage (250) is provided between the first connecting end (232) and the second connecting end (241), and the linkage (250) is used to drive the first connecting end (232) and the second connecting end (241) to move simultaneously by relying on the oil inlet pressure when oil is introduced into the rod chamber (210) or the rodless chamber (220).
5. The automatic lubrication system for the torque beam of a tunnel boring machine according to claim 4, characterized in that: The linkage (250) comprises a mechanical connecting rod, and the mechanical connecting rod is used to drive the first connecting end (232) and the second connecting end (241) to move simultaneously when oil enters the rod chamber (210) or the rodless chamber (220).
6. The automatic lubrication system for the torque beam of a tunnel boring machine according to claim 2, characterized in that: The grease injection core valve is provided with a stroke limiter, and the stroke limiter is used to adjust the size of the lubrication cavity (231).
7. The automatic lubrication system for a torque beam of a tunnel boring machine according to any one of claims 1 to 6, characterized in that: The grease storage and conveying component (100) includes a lubrication pump, a piston (110) is slidably arranged inside the lubrication pump, and the piston (110) is used to separate the lubrication pump into a storage chamber (111) and a drive chamber (112). The rod oil chamber (310) and the rodless oil chamber (320) are both connected to the drive chamber (112). When the propulsion cylinder (300) is propulsed or reset, it drives the piston (110) to convey the grease in the storage chamber (111) to the connecting component (240) by relying on the oil inlet pressure in the drive chamber (112).
8. The automatic lubrication system for a torque beam of a tunnel boring machine according to claim 7, characterized in that: It also includes a shuttle valve (400), which includes a first oil inlet end (410), a second oil inlet end (420) and an oil outlet end (430), wherein the first oil inlet end (410) is used to communicate with the rodless oil chamber (320), and the second oil inlet end (420) is used to communicate with the rod oil chamber (310). The lubrication pump is provided with an oil inlet pipe (120), one end of the oil inlet pipe (120) is connected to the drive chamber (112), and the other end is connected to the oil outlet end (430).
9. The automatic lubrication system for a torque beam of a tunnel boring machine according to claim 7, characterized in that: The lubrication pump is provided with a grease replenishing tube (130), the grease replenishing tube (130) is used to communicate with the storage cavity (111), and the grease replenishing tube (130) is used to replenish grease into the storage cavity (111).
10. The automatic lubrication system for a torque beam of a tunnel boring machine according to any one of claims 1 to 6, characterized in that: It also includes a distributor (500), which is used to receive the grease output from the lubrication cavity (231) and distribute the grease to multiple grease injection holes of the torque cylinder (600).