A pouring device

Abstract

This application discloses a casting device, relating to the field of mine support technology. The device includes: a hydraulic oil tank assembly for storing hydraulic oil; a double gear pump with its inlet connected to the hydraulic oil tank assembly; a high-low pressure switching valve with its inlet connected to the outlet of the double gear pump, the valve having a high-pressure outlet and a low-pressure outlet; and an actuator connected to the outlet of the high-low pressure switching valve. This application employs a hydraulic drive structure combining a high-low pressure switching valve and a double gear pump to achieve automatic switching between high-pressure support and rapid low-pressure action. The extension and retraction of the hydraulic cylinder directly controls the horizontal extension and retraction of the formwork, the adjustment of the roof angle, and the lifting and lowering of the sliding plate, enabling rapid deployment and positioning of the formwork and close fit to the roadway. This application solves the core problems of high labor intensity, long construction period, and high material consumption in traditional mine sealed wall construction.

Description

Technical Field

[0001] This application relates to the field of mine support technology, and in particular to a casting device. Background Technology

[0002] In mine production, to prevent coal seam spontaneous combustion, the spread of harmful gases, or gas explosions from affecting safe production, it is often necessary to build airtight walls to promptly seal off abandoned goaf areas, tail roadways, and connecting roadways, isolating areas prone to spontaneous combustion, sources of harmful gases, or areas where gas accumulates. These walls must be airtight, pressure-resistant, and typically constructed using non-combustible materials such as concrete, bricks, and aggregate.

[0003] In existing technologies, the following two construction methods are commonly used:

[0004] 1) The concrete pouring space is constructed using wooden formwork and supported by individual columns supported by manual labor. Due to the high workload of individual support and low support strength, there are risks such as formwork deformation and displacement and concrete leakage. The construction period is long and the dismantling of individual columns and formwork is complicated, which affects the overall project production progress.

[0005] 2) Flexible formwork concrete roadway retention construction technology requires coal miners to use hydraulic single props, wooden point pillars, etc. to support the flanges of the flexible formwork, and then fix the flanges to the roadway roof. Alternatively, the flexible formwork flanges can be fixed to the roadway roof by using anchor bolts. After the concrete wall is poured and reaches a certain strength, the hydraulic single props and wooden point pillars are recycled. The flexible formwork material is disposable, resulting in high construction costs.

[0006] The above construction methods have drawbacks such as low automation, high strength, long disassembly and assembly time for formwork, low safety factor, and long construction period. Solving these technical problems has become a major technical challenge in this field. Utility Model Content

[0007] In view of this, this application provides a casting device, the main purpose of which is to solve the technical problems of low heating control efficiency and serious heat loss in traditional heating systems.

[0008] This application provides a casting apparatus, comprising:

[0009] A hydraulic oil tank assembly for storing hydraulic oil;

[0010] A double gear pump, wherein the oil inlet of the double gear pump is connected to the hydraulic oil tank assembly;

[0011] A high-low pressure switching valve, wherein the oil inlet of the high-low pressure switching valve is connected to the oil outlet of the double gear pump, and the high-low pressure switching valve has a high-pressure oil outlet and a low-pressure oil outlet;

[0012] An actuator is connected to the oil outlet of the high-low pressure switching valve.

[0013] In one feasible implementation, the device further includes:

[0014] An electric motor is connected to the double gear pump and is used to drive the double gear pump to work.

[0015] In one feasible implementation, the device further includes:

[0016] A manual pump, connected in parallel to both ends of the double gear pump and the high-low pressure switching valve, is used to pressurize the hydraulic oil in the hydraulic oil tank assembly and deliver it to the actuator.

[0017] In one feasible implementation, the device further includes:

[0018] A multi-way valve, wherein the high-pressure inlet of the multi-way valve is connected to the high-pressure outlet of the high-low pressure switching valve, and the return port of the multi-way valve is connected to the low-pressure outlet of the high-low pressure switching valve.

[0019] The multi-way valve is also connected to the actuator.

[0020] In one feasible implementation, the device further includes:

[0021] An external quick-connect coupling is connected to the multi-way valve and includes an external oil supply end and an external oil return end.

[0022] The external oil supply end and the external oil return end are used to deliver an external power source to the actuator.

[0023] In one feasible implementation, the device further includes:

[0024] A quick-connector for the circuit is connected to the hydraulic tank assembly and the multi-way valve.

[0025] In one feasible implementation, the high-low pressure switching valve includes:

[0026] A one-way valve is provided between the P port and the A port of the high-low pressure switching valve;

[0027] An overflow valve is provided between the T port and the A port of the high-low pressure switching valve;

[0028] A sequence valve, wherein the oil inlet of the sequence valve is connected to port P, the oil outlet is connected to port T, and the control port is connected to port A.

[0029] In one feasible implementation, the device further includes:

[0030] A formwork support is provided, which is connected to the actuator.

[0031] In one feasible implementation, the formwork includes:

[0032] Base plate;

[0033] A support plate, which is connected to the base plate;

[0034] A skateboard, which is connected to the support plate;

[0035] A top plate, which is connected to the sliding plate;

[0036] An insert plate, part of which is connected to the top plate and part of which is connected to the support plate.

[0037] In one feasible implementation, the actuator includes:

[0038] A slide plate cylinder is provided, with part of the slide plate located between the slide plate and the top plate, and part of the slide plate located between the slide plate and the support plate. The slide plate cylinder is used to adjust the extension and retraction length of the slide plate.

[0039] A tilting cylinder is provided between the top plate and the sliding plate, and is used to adjust the angle between the top plate and the sliding plate;

[0040] A lifting cylinder is provided between the sliding plate and the support plate, and is used to adjust the extension and retraction length of the sliding plate;

[0041] A leveling cylinder is provided between the support plate and the base plate, and is used to adjust the included angle between the support plate and the base plate.

[0042] A demolding cylinder is mounted on the support plate and is used to push the support plate to demold.

[0043] This application provides a casting device, comprising: a hydraulic oil tank assembly for storing hydraulic oil; a double gear pump, the inlet of which is connected to the hydraulic oil tank assembly; a high-low pressure switching valve, the inlet of which is connected to the outlet of the double gear pump, the high-low pressure switching valve having a high-pressure outlet and a low-pressure outlet; and an actuator connected to the outlet of the high-low pressure switching valve.

[0044] This application has the following beneficial effects:

[0045] 1) In this application, the telescopic movement of the leveling cylinder can adjust the angle between the support plate and the base plate, the telescopic movement of the lifting cylinder can adjust the telescopic length of the sliding plate relative to the vertical slide, the telescopic movement of the flipping cylinder can adjust the angle between the top plate and the sliding plate, and the telescopic movement of the inserting plate cylinder can adjust the telescopic length of the inserting plate relative to the horizontal slide. The cylinders can be used to quickly and safely construct permanent sealed concrete walls. Compared with traditional construction methods, this significantly improves work efficiency, reduces formwork material consumption, and reduces labor intensity.

[0046] 2) This application offers multiple drive options, including motor drive, external power, and manual drive, to adapt to different working conditions. Users can select different power sources based on the on-site construction conditions. When the on-site construction equipment has an external power source, external power drive is used; when electricity is readily available on-site, motor drive is used; and when there is neither electricity nor a pressure source at the construction site, manual drive is used.

[0047] 3) The high and low pressure switching valve in this application can automatically adjust according to the needs of the equipment to achieve automatic switching between the two pressure levels, so that the force of motor or manual drive remains constant.

[0048] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0049] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0050] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0051] Figure 1 A schematic diagram of a casting device provided in an embodiment of this application is shown;

[0052] Figure 2 A schematic diagram of the structure of the external quick-connect coupling provided in an embodiment of this application is shown;

[0053] Figure 3 A schematic diagram of the high-low pressure switching valve provided in an embodiment of this application is shown;

[0054] Figure 4 A flowchart illustrating the first working process of the high-low pressure switching valve provided in an embodiment of this application is shown.

[0055] Figure 5 A flowchart illustrating the second working process of the high-low pressure switching valve provided in an embodiment of this application is shown;

[0056] Figure 6 A schematic diagram of the structure of the actuator provided in an embodiment of this application is shown;

[0057] Figure 7 A schematic diagram of the formwork structure provided in an embodiment of this application is shown;

[0058] Figure 8 A schematic diagram of the structure of the insert provided in an embodiment of this application is shown.

[0059] In the picture:

[0060] 1-Hydraulic oil tank assembly, 2-Electric motor, 3-Double gear pump, 4-Manual pump, 5-High and low pressure switching valve, 501-Check valve, 502-Sequence valve, 503-Relief valve, 6-Multi-way valve, 7-External quick-change connector, 701-External oil supply end, 702-External oil return end, 8-Actuator, 801-Slide plate cylinder, 802-Flip plate cylinder, 803-Lifting cylinder, 804-Leveling cylinder, 805-Demolding cylinder, 9-Circuit quick-change connector, 10-Mold support, 1001-Base plate, 1002-Support plate, 1003-Slide plate, 1004-Top plate, 1005-Slide plate. Detailed Implementation

[0061] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] See Figure 1 The diagram shows a structural schematic of a casting device provided in an embodiment of this application, comprising:

[0065] Hydraulic oil tank assembly 1, hydraulic oil tank assembly 1 is used to store hydraulic oil;

[0066] Double gear pump 3, the oil inlet of double gear pump 3 is connected to hydraulic oil tank assembly 1;

[0067] The high-low pressure switching valve 5 has an oil inlet connected to the oil outlet of the double gear pump 3, and has a high pressure oil outlet and a low pressure oil outlet.

[0068] Actuator 8 is connected to the oil outlet of high and low pressure switching valve 5.

[0069] In the above embodiment, the double gear pump 3 delivers pressurized hydraulic oil to the inlet of the high-low pressure switching valve 5 via a high-pressure pipeline. The high-pressure outlet of the high-low pressure switching valve 5 is directly connected to the inlet pipeline of the actuator 8, and the low-pressure outlet is connected to the return pipeline to the hydraulic oil tank assembly 1. The actuator 8 includes multiple independently controlled cylinders such as slide block cylinder 801 and flap cylinder 802, which receive pressurized oil through hydraulic branch pipelines to drive the action.

[0070] The basic hydraulic system provides dual flow output through a double gear pump 3, combined with the automatic pressure regulation capability of the high-low pressure switching valve 5. This satisfies the high flow demand during rapid formwork deployment and automatically switches to a high-pressure state to maintain support force after positioning. The independent control of multiple cylinders in the actuator 8 enables precise positioning of the formwork, significantly improving the efficiency of sealed wall construction.

[0071] Furthermore, the device also includes:

[0072] Electric motor 2 is connected to double gear pump 3 and is used to drive double gear pump 3 to work.

[0073] In the above embodiment, the electric motor 2 is connected to the input shaft of the double gear pump 3 via a coupling or direct drive. The electric motor 2 drives the double gear pump 3 to rotate, causing hydraulic oil to be drawn into the hydraulic oil tank assembly 1, pressurized, and then output. This connection also includes an electrical control unit for starting, stopping, and adjusting the speed of the electric motor 2 to adapt to different operating conditions.

[0074] The electric motor drive solution provides an automated power source, suitable for site environments with convenient power access, significantly reducing manual labor intensity and improving construction efficiency. The direct drive method between the electric motor 2 and the double gear pump 3 ensures stable oil supply to the hydraulic system, avoiding power interruptions caused by external interference and enhancing the reliability of the device in underground coal mines.

[0075] Furthermore, the device also includes:

[0076] Manual pump 4 is connected in parallel to the two ends of double gear pump 3 and high / low pressure switching valve 5. It is used to pressurize the hydraulic oil in hydraulic oil tank assembly 1 and deliver it to actuator 8.

[0077] In the above embodiment, the inlet of the manual pump 4 is connected in parallel to the outlet pipe of the hydraulic oil tank assembly 1, and the outlet is connected in parallel to the inlet pipe of the high / low pressure switching valve 5. The operating handle of the manual pump 4 drives the plunger through a mechanical linkage to pressurize the hydraulic oil. The manual pump 4 is also equipped with a safety valve to prevent overpressure operation and ensure system safety.

[0078] The parallel design of the four manual pumps allows the unit to continue operating manually when there is no electricity or external power, expanding the applicable scenarios of the unit. The manual drive scheme provides redundant power in remote or emergency situations, ensuring the continuity of concrete pouring and reducing the risk of construction delays.

[0079] Furthermore, the device also includes:

[0080] Multi-way valve 6, the high-pressure inlet of multi-way valve 6 is connected to the high-pressure outlet of high-low pressure switching valve 5, and the return port of multi-way valve 6 is connected to the low-pressure outlet of high-low pressure switching valve 5.

[0081] The multi-way valve 6 is also connected to the actuator 8.

[0082] In the above embodiment, the high-pressure inlet of the multi-way valve 6 is directly connected to the high-pressure outlet of the high-low pressure switching valve 5 via a high-pressure pipeline, and the return port of the multi-way valve 6 is connected to the low-pressure outlet of the high-low pressure switching valve 5 via a return pipeline. The multiple working ports of the multi-way valve 6 are respectively connected to the independent cylinders of the actuator 8 via branch pipelines. The multi-way valve 6 also integrates a directional control valve to enable independent operation of each cylinder.

[0083] The centralized control of the multi-way valve 6 simplifies the operation of the actuator 8, allowing users to precisely adjust the actions of each cylinder through a single valve body, such as controlling the deployment or retraction of the formwork. This design improves the accuracy of formwork positioning, avoids the complexity of traditional multi-valve systems, and enhances construction speed and safety.

[0084] See Figure 2 The diagram shows a structural schematic of the external quick-connect coupling provided in an embodiment of this application. Further, the device also includes:

[0085] External quick-connector 7 is connected to multi-way valve 6 and includes external oil supply end 701 and external oil return end 702.

[0086] The external oil supply end 701 and the external oil return end 702 are used to deliver the external power source to the actuator 8.

[0087] In the above embodiment, the external oil supply end 701 of the external quick-connect coupling 7 is coupled to the oil inlet of the multi-way valve 6 through a quick connector, and the external oil return end 702 is coupled to the oil return port of the multi-way valve 6 through a quick connector. The external quick-connect coupling 7 also includes a sealing ring and a locking mechanism to ensure leakage prevention and stability when connecting to the external power source pipeline.

[0088] The external quick-connect coupling 7 enables plug-and-play compatibility with on-site hydraulic equipment, reducing reliance on the device's built-in power source and optimizing resource utilization. This design allows for rapid power source switching in densely populated mining equipment areas, shortening the preparation time for formwork devices and improving the overall project flexibility.

[0089] Furthermore, the device also includes:

[0090] The quick-connector 9 is connected to the hydraulic oil tank assembly 1 and the multi-way valve 6.

[0091] In the above embodiment, the quick-connect coupling 9 is installed between the return line of the multi-way valve 6 and the inlet of the hydraulic oil tank assembly 1. This coupling adopts a two-way valve design, allowing hydraulic oil to return from the actuator 8 to the oil tank or undergo external filtration. The quick-connect coupling 9 is also equipped with a filter screen to intercept oil impurities.

[0092] The quick-change coupling 9 simplifies the maintenance process of the hydraulic system, facilitates oil changes and cleaning, and extends the service life of the device. The filtration function prevents contaminants from entering the actuator 8, ensuring smooth cylinder operation and reducing the failure rate during formwork construction.

[0093] See Figure 3 , Figure 4 and Figure 5 The diagram shows a structural schematic and a working process diagram of the high-low pressure switching valve provided in the embodiments of this application. Further, the high-low pressure switching valve 5 includes:

[0094] One-way valve 501 is located between port P1 and port A of high-low pressure switching valve 5;

[0095] Overflow valve 503 is located between port T1 and port A of high-low pressure switching valve 5;

[0096] Sequence valve 502 has its inlet port connected to port P1, its outlet port connected to port T1, and its control port connected to port A.

[0097] In the above embodiment, the one-way valve 501 of the high-low pressure switching valve 5 is located between port P1 and port A to control the unidirectional flow of high-pressure oil; the relief valve 503 is connected to port T1 and port A to release pressure when the pressure exceeds the limit; the inlet of the sequence valve 502 is connected to port P1, the outlet is connected to port T1, and the control port is connected to port A to realize pressure response switching. These valves are integrated in the valve block and work in coordination through internal flow channels.

[0098] The automatic switching mechanism of the high-low pressure switching valve 5 adjusts the pressure level according to the contact force of the formwork support, maintaining a constant driving force and avoiding cylinder overload or failure. The coordinated design of the check valve 501, sequence valve 502, and relief valve 503 improves the system response speed, ensures a tight fit between the formwork support and the tunnel during concrete pouring, and improves the construction quality.

[0099] See Figure 7 The diagram shows a structural schematic of the formwork provided in an embodiment of this application. Further, the device also includes:

[0100] Formwork 10 is connected to actuator 8.

[0101] In the above embodiment, the formwork 10 is directly connected to the piston rod of the hydraulic cylinder of the actuator 8. The base plate 1001 is fixed to the tunnel floor, and the support plate 1002, sliding plate 1003, top plate 1004, and insert plate 1005 are linked to the hydraulic cylinder through hinges or sliders. The formwork 10 is made of wear-resistant steel plate to enhance structural durability.

[0102] The linkage design between the formwork 10 and the actuator 8 enables rapid deployment and retrieval, reducing manual support time. The modular structure adapts to different tunnel dimensions, and the sealing wall construction is completed through hydraulic cylinder adjustment, significantly reducing formwork consumption and construction costs.

[0103] See Figure 8 The diagram shows a schematic representation of the insert plate provided in an embodiment of this application. Further, the formwork 10 includes:

[0104] Base plate 1001;

[0105] Support plate 1002, which is connected to base plate 1001;

[0106] Skateboard 1003 is connected to support plate 1002;

[0107] Top plate 1004, top plate 1004 is connected to slide plate 1003;

[0108] Insert plate 1005, part of which is connected to top plate 1004 and part of which is connected to support plate 1002.

[0109] In the above embodiment, the base plate 1001 is placed horizontally as a basic load-bearing plate; the support plate 1002 is hinged to the edge of the base plate 1001 via a pivot and can rotate around the pivot; the slide plate 1003 is installed in the vertical slide groove of the support plate 1002 via a linear guide rail and can slide up and down; the top plate 1004 is hinged to the top of the slide plate 1003 via a pivot; the insert plate 1005 is embedded in the top plate 1004 and the support plate 1002 via a horizontal slide groove and can extend and retract laterally. Buffer pads are provided between the components to reduce impact.

[0110] This component is designed to provide multi-degree-of-freedom adjustment capabilities. The leveling cylinder 804, lifting cylinder 803, and tilting cylinder 802 work in coordination to ensure the horizontal positioning of the formwork in the inclined tunnel. The telescopic extension plate 1005 expands the formwork coverage area, improving the integrity and compressive strength of the sealed wall.

[0111] See Figure 6 The diagram shows a schematic representation of the structure of the actuator provided in an embodiment of this application. Further, the actuator 8 includes:

[0112] The slide plate cylinder 801 is partially located between the slide plate 1005 and the top plate 1004, and partially located between the slide plate 1005 and the support plate 1002. The slide plate cylinder 801 is used to adjust the extension and retraction length of the slide plate 1005.

[0113] The flip-plate cylinder 802 is located between the top plate 1004 and the sliding plate 1003 and is used to adjust the angle between the top plate 1004 and the sliding plate 1003.

[0114] The lifting cylinder 803 is located between the slide plate 1003 and the support plate 1002 and is used to adjust the extension length of the slide plate 1003.

[0115] The leveling cylinder 804 is located between the support plate 1002 and the base plate 1001 and is used to adjust the included angle between the support plate 1002 and the base plate 1001.

[0116] The demolding cylinder 805 is located on the support plate 1002 and is used to push the support plate 1002 to demold.

[0117] In the above embodiment, one end of the insert plate cylinder 801 of the actuator 8 is fixed to the top plate 1004 or the support plate 1002, and the other end is connected to the end of the insert plate 1005, driving the insert plate to extend and retract; the flip plate cylinder 802 connects the hinge point of the top plate 1004 and the sliding plate 1003, adjusting the included angle; the lifting cylinder 803 is vertically installed between the support plate 1002 and the sliding plate 1003; the leveling cylinder 804 is inclinedly arranged between the bottom plate 1001 and the support plate 1002; the demolding cylinder 805 is installed inside the support plate 1002, with the piston rod pointing towards the concrete filling area. Each cylinder is equipped with a position sensor to achieve closed-loop control.

[0118] Independent control of multiple hydraulic cylinders allows the formwork to adapt to complex tunnel contours. The insert cylinder 801 expands the sealing range, the tilting cylinder 802 and lifting cylinder 803 adjust the height and angle, the leveling cylinder 804 compensates for uneven ground, and the demolding cylinder 805 ensures smooth demolding. This structure reduces labor intensity and improves construction safety and efficiency.

[0119] This application provides a schematic diagram of a casting device, comprising: a hydraulic oil tank assembly 1 for storing hydraulic oil; a double gear pump 3, the inlet of which is connected to the hydraulic oil tank assembly 1; a high-low pressure switching valve 5, the inlet of which is connected to the outlet of the double gear pump 3, the high-low pressure switching valve 5 having a high-pressure outlet and a low-pressure outlet; and an actuator 8 connected to the outlet of the high-low pressure switching valve 5.

[0120] This application employs a hydraulic drive structure consisting of a high-low pressure switching valve 5 and a double gear pump 3. Through the coordinated control of the internal check valve 501, sequence valve 502, and overflow valve 503, it achieves automatic switching between high-pressure support and low-pressure rapid action, significantly reducing energy waste. The extension and retraction of the hydraulic cylinder directly controls the horizontal extension and retraction of the slide plate 1005, the angle adjustment of the roof plate 1004, and the lifting and lowering of the sliding plate 1003, enabling the formwork 10 to be quickly deployed, positioned, and tightly fitted into the roadway. The construction of the sealed wall can be completed in a single operation, greatly improving support efficiency. This application solves the core problems of high labor intensity, long cycle, and high material consumption in traditional mine sealed wall construction through the synergistic innovation of the hydraulic drive system and the modular formwork structure.

[0121] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application. Those skilled in the art will understand that the modules in the apparatus of the embodiment can be distributed within the apparatus of the embodiment as described, or can be modified to be located in one or more apparatuses different from this embodiment. The modules of the above-described embodiment can be combined into one module, or further divided into multiple sub-modules.

[0122] The serial numbers in this application are for descriptive purposes only and do not represent the superiority or inferiority of any particular implementation scenario. The above disclosures are merely a few specific implementation scenarios of this application; however, this application is not limited thereto, and any variations conceived by those skilled in the art should fall within the protection scope of this application.

Claims

1. A casting device, characterized in that, include: Hydraulic oil tank assembly (1), the hydraulic oil tank assembly (1) is used to store hydraulic oil; A double gear pump (3) is provided, the oil inlet of which is connected to the hydraulic oil tank assembly (1); High-low pressure switching valve (5), the oil inlet of the high-low pressure switching valve (5) is connected to the oil outlet of the double gear pump (3), the high-low pressure switching valve (5) has a high pressure oil outlet and a low pressure oil outlet; The actuator (8) is connected to the oil outlet of the high-low pressure switching valve (5).

2. The apparatus according to claim 1, characterized in that, The device further includes: An electric motor (2) is connected to the double gear pump (3) and is used to drive the double gear pump (3) to work.

3. The apparatus according to claim 1, characterized in that, The device further includes: A manual pump (4) is connected in parallel to the two ends of the double gear pump (3) and the high and low pressure switching valve (5) to pressurize the hydraulic oil in the hydraulic oil tank assembly (1) and deliver it to the actuator (8).

4. The apparatus according to claim 1, characterized in that, The device further includes: A multi-way valve (6) is provided, wherein the high-pressure inlet of the multi-way valve (6) is connected to the high-pressure outlet of the high-low pressure switching valve (5), and the return port of the multi-way valve (6) is connected to the low-pressure outlet of the high-low pressure switching valve (5). The multi-way valve (6) is also connected to the actuator (8).

5. The apparatus according to claim 4, characterized in that, The device further includes: An external quick-connector (7) is connected to the multi-way valve (6) and includes an external oil supply end (701) and an external oil return end (702). The external oil supply end (701) and the external oil return end (702) are used to supply an external power source to the actuator (8).

6. The apparatus according to claim 4, characterized in that, The device further includes: The quick-connector (9) is connected to the hydraulic tank assembly (1) and the multi-way valve (6).

7. The apparatus according to claim 1, characterized in that, The high-low pressure switching valve (5) includes: A one-way valve (501) is provided between the P1 port and the A port of the high-low pressure switching valve (5); An overflow valve (503) is provided between the T1 port and the A port of the high-low pressure switching valve (5); Sequence valve (502), wherein the oil inlet of the sequence valve (502) is connected to port P1, the oil outlet is connected to port T1, and the control port is connected to port A.

8. The apparatus according to claim 1, characterized in that, The device further includes: A support (10) is provided, which is connected to the actuator (8).

9. The apparatus according to claim 8, characterized in that, The formwork (10) includes: Base plate (1001); A support plate (1002) is connected to the base plate (1001); A sliding plate (1003) is connected to the support plate (1002); Top plate (1004), the top plate (1004) being connected to the sliding plate (1003); Insert plate (1005), part of which is connected to the top plate (1004) and part of which is connected to the support plate (1002).

10. The apparatus according to claim 9, characterized in that, The actuator (8) includes: A slide plate cylinder (801) is provided, partly between the slide plate (1005) and the top plate (1004), and partly between the slide plate (1005) and the support plate (1002). The slide plate cylinder (801) is used to adjust the extension length of the slide plate (1005). A flip-plate cylinder (802) is provided between the top plate (1004) and the sliding plate (1003) for adjusting the angle between the top plate (1004) and the sliding plate (1003); A lifting cylinder (803) is provided between the sliding plate (1003) and the support plate (1002) for adjusting the extension length of the sliding plate (1003); A leveling cylinder (804) is provided between the support plate (1002) and the base plate (1001) for adjusting the angle between the support plate (1002) and the base plate (1001). A demolding cylinder (805) is provided on the support plate (1002) and is used to push the support plate (1002) to demold.

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