Power unit assembly and raise boring machine

Abstract

A power unit assembly and a raise boring machine belong to the technical field of mining machinery and comprise a power unit underframe, a main hydraulic oil tank is fixedly embedded in the upper portion of the power unit underframe to reduce occupation of height space, and a fuel tank and a battery pack are fixedly embedded in two sides of the power unit underframe. A fuel tank and a battery pack are fixedly installed in the two sides of a power unit bottom frame in an embedded mode, the occupied width space is reduced, overhauling is convenient and fast, and a fuel engine hydraulic pump set, a motor hydraulic pump set, a hydraulic control valve set, a hydraulic oil heat exchanger, an auxiliary hydraulic oil tank and a comprehensive power distribution cabinet are fixedly installed on the power unit bottom frame. An outer cover is further detachably installed on the power unit bottom frame, and all power unit components on the power unit bottom frame are protected through the outer cover.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, and in particular to a power unit assembly and a riser drilling rig. Background Technology

[0002] A well drilling rig is a type of mechanical equipment that uses rotary drilling to break rocks and create holes, and can also reverse the hole to enlarge it. Currently, most well drilling rigs are mounted as a whole on a traveling mechanism. When the main unit of an existing self-propelled well drilling rig is erected or retracted, the center of gravity of the well drilling rig will shift towards the main unit, making it very easy to overturn. It is necessary to drill holes in the ground to hang hooks, and use the hooks to lock and stabilize the main unit base. This operation is time-consuming, labor-intensive, and requires a lot of labor intensity.

[0003] A self-propelled raise boring machine (publication number CN205778528U) has emerged, which is equipped with a power unit assembly containing a power unit base frame. All power unit components are integrated onto the power unit base frame, which is mounted as a whole on the chassis frame at the end away from the main unit. This shifts the center of gravity of the self-propelled raise boring machine to the rear, providing the balancing torque required when the machine is erected and retracted.

[0004] In order to reduce space occupation and avoid increasing the overall size of the well drilling rig (especially the height and width), and to ensure the ability of the well drilling rig to move and relocate autonomously, the power unit base frame of the above-mentioned power unit assembly serves as both a load-bearing component and a hydraulic oil tank and diesel tank. It has high requirements for processing quality and is extremely susceptible to damage and oil leakage due to external environmental factors. At the same time, it is difficult to repair when damaged, requiring the removal of all power unit components before the power unit base frame can be disassembled for repair. The repair time is long and will cause excessive delays in on-site construction. Utility Model Content

[0005] To address the technical problems of existing self-propelled well drilling rigs' power unit assemblies, which use the power unit base frame as both a load-bearing component and a hydraulic and diesel tank, resulting in high processing requirements, easy damage, and difficult maintenance, this utility model provides a power unit assembly and a well drilling rig.

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

[0007] This utility model provides a power unit assembly, including a power unit base frame. A main hydraulic oil tank is embedded and fixed in the upper part of the power unit base frame, reducing the occupation of height space. Fuel tanks and battery packs are embedded and fixed in the two sides of the power unit base frame. Embedding and fixing the fuel tanks and battery packs in the interior of the two sides of the power unit base frame reduces the occupation of width space and makes maintenance convenient and quick. A fuel engine hydraulic pump assembly, an electric motor hydraulic pump assembly, a hydraulic control valve assembly, a hydraulic oil heat exchanger, an auxiliary hydraulic oil tank, and a comprehensive power distribution cabinet are fixedly installed on the power unit base frame. An outer cover can also be detachably installed on the power unit base frame to protect all power unit components on the power unit base frame.

[0008] Preferably, the upper surface of the power unit base frame is provided with a first mounting groove, in which the main hydraulic oil tank is fixedly installed. A second mounting groove is provided on each side of the power unit base frame, in which a fuel tank and a battery pack are respectively installed. This allows the main hydraulic oil tank, battery pack, and fuel tank to be embedded within the power unit bracket. The fuel tank and battery pack are embedded on both sides of the power unit base frame, while the main hydraulic oil tank is embedded in the upper part of the power unit base frame. This design allows the power unit base frame to support and fix the main hydraulic oil tank, fuel tank, and battery pack, while also protecting them to reduce the impact of the external environment. It also facilitates maintenance, as the fuel tank, battery pack, and main hydraulic oil tank can be directly disassembled and replaced without completely removing other power unit components and the power unit base frame. Maintenance is convenient and quick, with minimal impact on project delays, saving maintenance and production costs.

[0009] Preferably, the second mounting slot is covered with an outer cover, and the bottom side wall of the second mounting slot is provided with a maintenance hand hole to facilitate the maintenance of the fuel tank and battery pack and improve maintenance efficiency.

[0010] Preferably, a support frame is fixedly installed on the upper surface of the power unit base frame, and the auxiliary hydraulic oil tank is fixedly installed on the top of the support frame and located directly above the main hydraulic oil tank. The auxiliary hydraulic oil tank is internally connected to the main hydraulic oil tank so that the hydraulic oil can be returned under the action of gravity, saving power components, thereby reducing the space occupied and reducing energy consumption.

[0011] Preferably, the hydraulic control valve assembly is fixedly installed on the support frame, and the hydraulic control valve assembly is located in the space between the main hydraulic oil tank and the auxiliary hydraulic oil tank, so as to make reasonable use of the space, improve the space utilization rate, and ensure the compact installation of the power unit components.

[0012] Preferably, the fuel engine hydraulic pump group and the electric motor hydraulic pump group are fixedly mounted on one side of the support frame. Several support counterweights for supporting the fuel engine hydraulic pump group and the electric motor hydraulic pump group are fixedly mounted on the power unit base frame. The integrated power distribution cabinet is fixedly mounted on the other side of the support frame. The height of the fuel engine hydraulic pump group and the electric motor hydraulic pump group is lower than that of the auxiliary hydraulic oil tank. The support counterweights are used as counterweights, which can effectively control the overall weight of the power unit assembly and are suitable for different counterweight requirements. There is no need to modify the structure and materials of the power unit base frame itself.

[0013] Preferably, the hydraulic pump unit of the fuel engine is connected to the fuel tank, the hydraulic control valve group, the main hydraulic oil tank and the auxiliary hydraulic oil tank, and the hydraulic pump unit of the electric motor is connected to the hydraulic control valve group, the main hydraulic oil tank and the auxiliary hydraulic oil tank. This allows for switching of the hydraulic circuit according to actual needs, and the overall adaptability is strong.

[0014] Preferably, the hydraulic oil heat exchanger is installed on the pipeline connecting the fuel engine hydraulic pump group, the electric motor hydraulic pump group and the auxiliary hydraulic oil tank. The hydraulic oil heat exchanger is located outside the outer casing, and the external placement is more conducive to heat dissipation.

[0015] Preferably, the hydraulic control valve assembly is a hydraulically operated valve with a handle, which has both manual and remote control modes, and is highly adaptable.

[0016] This utility model provides a well drilling rig, including a tracked chassis assembly. The main unit assembly and the power unit assembly are respectively set at both ends of the tracked chassis assembly. Without increasing the overall size, all power components are integrated into one unit assembly, which accounts for a large part of the total weight of the machine. This shifts the overall center of gravity of the well drilling rig to the rear, which can balance the center of gravity of the main unit when erecting and retracting the machine on the tracked chassis assembly, ensuring the overall stability of the well drilling rig. At the same time, it also ensures the function of the well drilling rig to move and relocate autonomously.

[0017] As can be seen from the above technical solutions, the advantages of this utility model are:

[0018] 1. The fuel tank and battery pack are embedded on both sides of the power unit base frame, and the main hydraulic oil tank is embedded in the upper part of the power unit base frame. The power unit base frame can support and fix the main hydraulic oil tank, fuel tank, and battery pack, while also protecting them with an outer cover to reduce the impact of the external environment. It is also easier to maintain, as the fuel tank, battery pack, and main hydraulic oil tank can be directly disassembled and replaced without completely removing other power unit components and the power unit base frame. Maintenance is convenient and fast, with minimal impact on project delays, and saves maintenance and production costs.

[0019] 2. The vertical arrangement of the main hydraulic oil tank and the auxiliary hydraulic oil tank saves space in width. Furthermore, the embedding of the main hydraulic oil tank within the power unit's base frame saves space in height. The hydraulic control valve assembly is fixedly mounted on the support frame and located in the space between the main and auxiliary hydraulic oil tanks, thus achieving efficient use of space, improving space utilization, and ensuring the compact installation of the power unit components.

[0020] 3. The power unit assembly embeds and fixes the main hydraulic oil tank, fuel tank, and battery pack within the power unit base frame. Without increasing the overall dimensions (height and width), all power components are integrated into a single unit assembly. This results in a significant weight contribution to the overall weight of the hoisting rig, shifting the overall center of gravity of the hoisting rig rearward. This balances the center of gravity of the main machine during erection and retraction, ensuring the overall stability of the hoisting rig. It also effectively reduces space occupation, providing a solid power foundation for significantly improving the rig's working capacity and automation level. This enables the hoisting rig to move and relocate autonomously without any disassembly, reassembly, or towing. Attached Figure Description

[0021] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the power unit assembly according to one or more embodiments of the present invention.

[0023] Figure 2 This is a schematic diagram of the arrangement structure of the power unit devices according to one or more embodiments of the present invention. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the arrangement structure of the power unit devices according to one or more embodiments of the present invention. Figure 2 ;

[0025] Figure 4 This is a structural schematic diagram of the power unit base frame according to one or more embodiments of the present invention;

[0026] The components represented by the various reference numerals in the diagram are:

[0027] 1. Power unit base frame; 2. Fuel engine hydraulic pump assembly; 3. Electric motor hydraulic pump assembly; 4. Hydraulic control valve assembly; 5. Hydraulic oil heat exchanger; 6. Main hydraulic oil tank; 7. Auxiliary hydraulic oil tank; 8. Support frame; 9. Fuel tank; 10. Electrical control cabinet assembly; 11. Power supply cabinet assembly; 12. Outer cover; 13. Support counterweight; 14. First mounting slot; 15. Second mounting slot; 16. Inspection manhole. Detailed Implementation

[0028] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0029] Example 1

[0030] In a typical embodiment of this utility model, such as Figures 1-4 As shown, a power unit assembly is proposed, including: a power unit base frame 1 and power unit components integrated and installed on the power unit base frame 1. The power unit components include a fuel engine hydraulic pump group 2, an electric motor hydraulic pump group 3, a hydraulic control valve group 4, a hydraulic oil heat exchanger 5, a main hydraulic oil tank 6, an auxiliary hydraulic oil tank 7, a fuel tank 9, a battery pack, an electrical control cabinet group 10, and a power supply cabinet group 11. An outer cover 12 can also be detachably installed on the power unit base frame 1 to protect all power unit components on the power unit base frame 1. The outer cover 12 adopts a modular and detachable design for easy disassembly and assembly.

[0031] The power unit base frame 1 is made of welded plates. The power unit base frame 1 has several holes to serve as conduits and wiring channels for hydraulic pipelines and electrical cables. Some of these holes also serve as welding process holes to facilitate welding of various connection parts.

[0032] like Figure 4 As shown, several support counterweights 13 are welded and fixed to the upper surface of one end of the power unit base frame 1. The support counterweights 13 are used to increase the counterweight and can also serve as the installation support structure for the power unit components. When used as counterweights, the support counterweights 13 can effectively control the overall weight of the power unit assembly and are suitable for different counterweight requirements without the need to modify the structure and materials of the power unit base frame 1 itself.

[0033] The upper surface of one end of the power unit base frame 1 is provided with a first mounting groove 14. The first mounting groove 14 and all the supporting counterweights 13 are arranged opposite to each other on the upper surface of both ends of the power unit base frame 1. The first mounting groove 14 has an open structure at the top. The main hydraulic oil tank 6 is fixedly installed in the first mounting groove 14 so that the main hydraulic oil tank 6 is embedded in the power unit base frame 1. The upper surface of the main hydraulic oil tank 6 is not higher than the upper surface of the power unit base frame 1 to reduce the occupation of height space. The two sides of the power unit base frame 1 are also provided with two second mounting grooves 15. The two second mounting grooves 15 are arranged opposite to each other on both sides of the first mounting groove 14. The fuel tank 9 is fixedly installed in one second mounting groove 15, and the battery pack is fixedly installed in the other second mounting groove 15 so that the fuel tank 9 and the battery pack are embedded and fixedly installed inside the sides of the power unit base frame 1 to reduce the occupation of width space.

[0034] The second mounting slot 15 has an opening on one side. An outer cover 12 can be detachably installed at the opening of the second mounting slot 15 to cover the second mounting slot 15 and protect the fuel tank 9 and battery pack inside the second mounting slot 15. Figure 4 As shown, the bottom side wall of the second mounting groove 15 is provided with a maintenance hand hole 16 to facilitate the maintenance of the fuel tank 9 and the battery pack.

[0035] In this embodiment, the fuel tank 9 and the battery pack are embedded on both sides of the power unit base frame 1, and the main hydraulic oil tank 6 is embedded in the upper part of the power unit base frame 1. The power unit base frame 1 can support and fix the main hydraulic oil tank 6, fuel tank 9 and battery pack, while also protecting them to reduce the impact of the external environment. It is also more convenient for maintenance. The fuel tank 9, battery pack and main hydraulic oil tank 6 can be directly disassembled and replaced without completely removing other power unit components and the power unit base frame 1. Maintenance is convenient and fast, with minimal impact on the construction period, and saves maintenance and production costs.

[0036] The main hydraulic oil tank 6 is used to store hydraulic oil for the drilling rig and also serves to cool the hydraulic oil. Figures 2-3 As shown, a support frame 8 is fixedly installed on the upper surface of the power unit base frame 1, and an auxiliary hydraulic oil tank 7 is fixedly installed on the top of the support frame 8. The auxiliary hydraulic oil tank 7 is connected to the interior of the main hydraulic oil tank 6 through a pipeline. It is used for hydraulic system oil return, filtration, venting, regulating fluid level fluctuations, cooling hydraulic oil, and preventing hydraulic pump from sucking in air. The auxiliary hydraulic oil tank 7 is located directly above the main hydraulic oil tank 6 so that the hydraulic oil can return under the action of gravity, saving power components, thereby reducing the space occupied, and also reducing energy consumption.

[0037] The vertical arrangement of the main hydraulic oil tank 6 and the auxiliary hydraulic oil tank 7 saves space in width. At the same time, the arrangement of the main hydraulic oil tank 6 being embedded inside the power unit base frame 1 saves space in height.

[0038] The hydraulic control valve assembly 4 is fixedly installed on the support frame 8, and the hydraulic control valve assembly 4 is located in the space between the main hydraulic oil tank 6 and the auxiliary hydraulic oil tank 7, so as to make reasonable use of the space, improve the space utilization rate, and ensure the compact installation of the power unit components.

[0039] The fuel engine hydraulic pump assembly 2 and the electric motor hydraulic pump assembly 3 are fixedly installed on one side of the main and auxiliary hydraulic oil tanks, and the height of both the fuel engine hydraulic pump assembly 2 and the electric motor hydraulic pump assembly 3 is lower than that of the auxiliary hydraulic oil tank 7. Specifically, the fuel engine hydraulic pump assembly 2 is fixedly installed on the support counterweight block 13. The fuel engine hydraulic pump assembly 2 includes a first hydraulic pump and a fuel engine. The first hydraulic pump is used to convert the mechanical energy of the fuel engine into hydraulic energy. The fuel engine is connected to the fuel tank 9 through a fuel pipe. The first hydraulic pump is connected to the main hydraulic oil tank 6 and the auxiliary hydraulic oil tank 7 through hydraulic oil pipes. The first hydraulic pump is also connected to the hydraulic control valve assembly 4, the walking hydraulic motor of the walking track, the main hydraulic components, and other hydraulic components through pipelines. It can be used to provide walking hydraulic power for the walking track, and can also provide hydraulic power to the main hydraulic components and other hydraulic components through the switching of the hydraulic control valve assembly 4.

[0040] The electric motor hydraulic pump unit 3 is fixedly installed on the supporting counterweight block 13. The electric motor hydraulic pump unit 3 includes a second hydraulic pump and an electric motor. The second hydraulic pump is used to convert the mechanical energy of the electric motor into hydraulic energy. The second hydraulic pump is connected to the main hydraulic oil tank 6 and the auxiliary hydraulic oil tank 7 through hydraulic oil pipes. The second hydraulic pump is also connected to the hydraulic control valve group 4, the walking hydraulic motor of the walking track, the main hydraulic components and other hydraulic components through pipelines. It can be used to provide hydraulic power to the main hydraulic components and other hydraulic components, and can also provide walking hydraulic power to the walking track through the switching of the hydraulic control valve group 4.

[0041] In this embodiment, the hydraulic control valve group 4 is a hydraulic control valve with a handle, which has both remote control and manual control modes. When the remote control is not electrically responsive, the hydraulic control valve group can be manually operated to improve its overall adaptability.

[0042] A hydraulic oil heat exchanger 5 is also fixedly installed at one end of the power unit base frame 1. The hydraulic oil heat exchanger 5 is close to the fuel engine hydraulic pump group 2 and the electric motor hydraulic pump group 3, and is located on the side of the fuel engine hydraulic pump group 2 and the electric motor hydraulic pump group 3 away from the main and auxiliary hydraulic oil tanks. The oil outlets of the first hydraulic pump and the second hydraulic pump are connected to the hydraulic oil heat exchanger 5 through pipelines. The hydraulic oil heat exchanger 5 is also connected to the auxiliary hydraulic oil tank 7 through pipelines. It is mainly used to maintain the safe low temperature of hydraulic oil through heat exchange. In this embodiment, the hydraulic oil heat exchanger 5 is a water-cooled heat exchanger, and the hydraulic oil heat exchanger 5 is set outside the outer cover 12. The external placement is more conducive to heat dissipation.

[0043] The electrical control cabinet 10 is fixedly installed on the power unit base frame 1 and located on the side of the support frame 8 away from the fuel engine hydraulic pump group 2 and the electric motor hydraulic pump group 3. It is used to integrate and install low-voltage electrical control components to provide electrical control functions for the drilling rig. The electrical control cabinet 10 is equipped with a wireless transceiver device, which can be used to send and receive signals from a wireless remote control to remotely control various actions of the drilling rig. The power supply cabinet 11 is used to integrate and install high-voltage power supply components to provide working power for the drilling rig. The power supply cabinet 11 is also fixedly installed on the power unit base frame 1 and close to the electrical control cabinet 10. The power supply cabinet 11 and the electrical control cabinet 10 are combined into a single cabinet, namely a comprehensive power distribution cabinet, which has a high degree of integration and facilitates the operation and maintenance of the electrical control system.

[0044] Example 2

[0045] In another typical embodiment of this utility model, a well drilling rig is proposed, which utilizes the power unit assembly in Embodiment 1, including a tracked chassis assembly, a main engine assembly and a power unit assembly. The tracked chassis assembly contains a walking track, and the main engine assembly and the power unit assembly are installed opposite each other at the front and rear ends of the tracked chassis assembly.

[0046] In this embodiment, without increasing the overall dimensions (height and width), all power components are integrated into a single unit assembly, which accounts for a significant portion of the total weight of the machine. This shifts the overall center of gravity of the hoisting rig rearward, balancing the center of gravity of the main unit during erection and retraction onto the tracked chassis assembly, thus ensuring the overall stability of the hoisting rig. Simultaneously, the power unit assembly embeds and fixes the main hydraulic oil tank 6, fuel tank 9, and battery pack within the power unit base frame 1, ensuring not only operational safety but also effectively reducing space requirements. This provides a solid power foundation for significantly improving the rig's working capacity and automation level, enabling the hoisting rig to move and relocate autonomously without any disassembly, reassembly, or towing.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power unit assembly, comprising: The power unit base frame (1) is characterized in that a main hydraulic oil tank (6) is embedded and fixed in the upper part of the power unit base frame (1), a fuel tank (9) and a battery pack are embedded and fixed in the two sides of the power unit base frame (1), and a fuel engine hydraulic pump group (2), an electric motor hydraulic pump group (3), a hydraulic control valve group (4), a hydraulic oil heat exchanger (5), an auxiliary hydraulic oil tank (7) and a comprehensive power distribution cabinet are fixedly installed on the power unit base frame (1). An outer cover (12) can also be detachably installed on the power unit base frame (1).

2. The power unit assembly according to claim 1, characterized in that, The upper surface of the power unit base frame (1) is provided with a first mounting groove (14), and the main hydraulic oil tank (6) is fixedly installed in the first mounting groove (14). A second mounting groove (15) is provided on each side of the power unit base frame (1), and a fuel tank (9) and a battery pack are installed in the two second mounting grooves (15) respectively.

3. The power unit assembly according to claim 2, characterized in that, The second mounting slot (15) is covered with an outer cover (12), and a maintenance hand hole (16) is provided on the bottom side wall of the second mounting slot (15).

4. The power unit assembly according to claim 1, characterized in that, A support frame (8) is fixedly installed on the upper surface of the power unit base frame (1). The auxiliary hydraulic oil tank (7) is fixedly installed on the top of the support frame (8) and located directly above the main hydraulic oil tank (6). The auxiliary hydraulic oil tank (7) is connected to the interior of the main hydraulic oil tank (6).

5. The power unit assembly according to claim 4, characterized in that, The hydraulic control valve assembly (4) is fixedly installed on the support frame (8), and the hydraulic control valve assembly (4) is located in the space between the main hydraulic oil tank (6) and the auxiliary hydraulic oil tank (7).

6. The power unit assembly according to claim 4, characterized in that, The fuel engine hydraulic pump group (2) and the electric motor hydraulic pump group (3) are fixedly installed on one side of the support frame (8). Several support counterweights (13) for supporting the fuel engine hydraulic pump group (2) and the electric motor hydraulic pump group (3) are fixedly installed on the power unit base frame (1). The integrated power distribution cabinet is fixedly installed on the other side of the support frame (8). The height of the fuel engine hydraulic pump group (2) and the electric motor hydraulic pump group (3) is lower than that of the auxiliary hydraulic oil tank (7).

7. The power unit assembly according to claim 1, characterized in that, The fuel engine hydraulic pump assembly (2) is connected to the fuel tank (9), the hydraulic control valve assembly (4), the main hydraulic oil tank (6) and the auxiliary hydraulic oil tank (7), and the electric motor hydraulic pump assembly (3) is connected to the hydraulic control valve assembly (4), the main hydraulic oil tank (6) and the auxiliary hydraulic oil tank (7).

8. The power unit assembly according to claim 7, characterized in that, The hydraulic oil heat exchanger (5) is installed on the pipeline connecting the fuel engine hydraulic pump group (2), the electric motor hydraulic pump group (3) and the auxiliary hydraulic oil tank (7), and the hydraulic oil heat exchanger (5) is installed outside the outer cover (12).

9. The power unit assembly according to claim 1, characterized in that, The hydraulic control valve assembly (4) is a hydraulically operated valve with a handle.

10. A well drilling rig, characterized in that, The power unit assembly described in any one of claims 1-9 is adopted, including a tracked chassis assembly, wherein a main engine assembly and a power unit assembly are respectively disposed at both ends of the tracked chassis assembly.

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