A tank car blocker driven by two oil cylinders in series

Abstract

The utility model discloses a series connection double oil cylinder drive's car resister in tank, including hydraulic pump station, left car stop and right car stop still include the hanging basket of fixed in the cage bottom plate, be used for driving left drive oil cylinder, be used for driving right drive oil cylinder of left car stop, hydraulic pump station, left drive oil cylinder and right drive oil cylinder set up in the hanging basket, the piston rod cavity of left drive oil cylinder is linked with the piston cavity of right drive oil cylinder, constitutes the oil circuit series connection structure of left, right drive oil cylinder, hydraulic pump station is used to drive left drive oil cylinder, right drive oil cylinder synchronous telescopic, drives left car stop and right car stop synchronous opening and closing. The utility model discloses compact structure, and the space is small, satisfies the functional requirement of car resister in tank.

Description

Technical Field

[0001] This utility model relates to a tank-mounted vehicle stopper driven by a series of dual hydraulic cylinders, belonging to the field of mining machinery. Background Technology

[0002] In mining transportation, the conventional drive scheme for vehicle stoppers uses a single hydraulic cylinder (or pneumatic cylinder) in conjunction with two sets of linkage mechanisms. The hydraulic cylinder piston rod extends and retracts, and the linkage mechanism drives the synchronous opening and closing of the left and right vehicle stops. This solution is technically mature, operates stably with a low failure rate, and is highly practical in common scenarios such as underground roadways.

[0003] However, when this solution is used for the car stopper inside the cage, the conventional structure is difficult to arrange due to the height of the cage chassis, and structural optimization is required. In addition, as the core lifting channel, the cage needs to be dealt with quickly in case of failure, but the conventional method of entering the cage and prying open the car stopper to remove obstacles poses a safety hazard. Summary of the Invention

[0004] To address the aforementioned miniaturization requirements, this invention provides a tank-mounted vehicle stopper driven by a series of dual hydraulic cylinders, which has a compact structure and occupies little space.

[0005] To achieve the above objectives, this utility model employs a tank-mounted vehicle stopper driven by a series of dual hydraulic cylinders, including a hydraulic pump station, a left vehicle stop and a right vehicle stop, as well as a hanging basket fixed under the bottom plate of the tank cage, a left drive cylinder for driving the left vehicle stop, and a right drive cylinder for driving the right vehicle stop. The hydraulic pump station, the left drive cylinder and the right drive cylinder are all installed inside the hanging basket.

[0006] The piston rod chamber of the left drive cylinder is connected to the piston chamber of the right drive cylinder, forming a series oil circuit structure for the left and right drive cylinders. The piston chamber of the left drive cylinder is connected to the inlet / outlet A of the hydraulic pump station, and the piston rod chamber of the right drive cylinder is connected to the inlet / outlet B of the hydraulic pump station. The hydraulic pump station is used to drive the left and right drive cylinders to extend and retract synchronously, thereby driving the left and right gears to open and close synchronously.

[0007] In some embodiments, a left regulating valve is provided between the piston chamber and the piston rod chamber of the left drive cylinder, and a right regulating valve is provided between the piston chamber and the piston rod chamber of the right drive cylinder.

[0008] In some embodiments, a manual hydraulic pump station for outputting high-pressure oil to drive the left and right drive cylinders to retract is also included. The manual hydraulic pump station includes a manual pump FB, a check valve FD, a relief valve FW, and several oil ports.

[0009] The piston rod chamber of the right drive cylinder is connected to the oil outlet B3 of the manual hydraulic pump station. The oil outlet B3 is connected to the oil tank through the first oil circuit. The first oil circuit is equipped with a manual pump FB and a check valve FD.

[0010] The piston chamber of the left drive cylinder is connected to the oil inlet A3 of the manual hydraulic pump station. The oil inlet A3 is connected to the oil tank through the second oil circuit, and an overflow valve FW is installed on the second oil circuit.

[0011] In some embodiments, the system also includes a left hydraulic cylinder guide rail and a right hydraulic cylinder guide rail disposed within the hanging basket;

[0012] The piston rod of the left drive cylinder moves along the left cylinder guide rail, and drives the left gear to open and close via the left connecting rod. The piston rod of the right drive cylinder moves along the right cylinder guide rail, and drives the right gear to open and close via the right connecting rod.

[0013] Compared with existing technologies, the tank cage-driven in-house vehicle stopper of this invention significantly improves space utilization efficiency and has stronger adaptability. This invention, through the structure of directly driving the left and right vehicle stops with series dual hydraulic cylinders, greatly simplifies the transmission system while reducing the overall size of the equipment. It not only perfectly fits the compact installation space inside the tank cage but also solves the industry pain point of traditional vehicle stops being unable to be miniaturized due to space limitations from a structural design perspective, significantly improving installation flexibility. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0018] In the diagram: 1. Hydraulic pump station, 2. Left drive cylinder, 3. Right drive cylinder, 4. Left gear stop, 5. Right gear stop, 6. Rail, 7. Hanging basket, 8. Left regulating valve, 9. Right regulating valve, 10. Manual hydraulic pump station, 11. Left connecting rod, 12. Right connecting rod, 13. Left cylinder guide rail, 14. Right cylinder guide rail. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below through specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0020] In the description of this utility model, it should be understood that the terms "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify 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 limiting the scope of protection of this utility model.

[0021] Example 1

[0022] like Figure 1 As shown, a tank-mounted vehicle stopper driven by two hydraulic cylinders in series includes a hydraulic pump station 1, a left drive cylinder 2, a right drive cylinder 3, a left vehicle stop 4, a right vehicle stop 5, a hanging basket 7, a left connecting rod 11, and a right connecting rod 12.

[0023] The left drive cylinder 2 and the right drive cylinder 3 are respectively connected to port A and port B of the hydraulic pump station 1. The left drive cylinder 2 drives the left vehicle stop 4, and the right drive cylinder 3 drives the right vehicle stop 5. The left vehicle stop 4 and the right vehicle stop 5 are used to block or allow vehicles on the track 6 to pass. This utility model adopts a dual-cylinder drive structure (the left drive cylinder 2 and the right drive cylinder 3 drive the left and right vehicle stops respectively) to replace the traditional single-cylinder drive double linkage mechanism, which is suitable for narrow space arrangement.

[0024] The hydraulic pump station 1, the left drive cylinder 2 and the right drive cylinder 3 are all installed inside the hanging basket 7, forming a modular structure that allows for quick overall installation and replacement.

[0025] The piston rod chamber of the left drive cylinder 2 is connected to the piston chamber of the right drive cylinder 3, forming a series hydraulic circuit structure for the left and right drive cylinders. Utilizing the hydraulic characteristics of the series hydraulic circuit, the actions of the two cylinders are synchronized (the piston rods extend or retract simultaneously), eliminating the need for an additional synchronization mechanism. This simplifies the structure while ensuring consistent opening and closing of the left and right gear shifts. The piston chamber of the left drive cylinder 2 is connected to the inlet / outlet A of the hydraulic pump station 1, and the piston rod chamber of the right drive cylinder 3 is connected to the inlet / outlet B of the hydraulic pump station 1. The hydraulic pump station 1 is used to drive the left drive cylinder 2 and the right drive cylinder 3 to extend and retract synchronously, thereby driving the left gear shift 4 and the right gear shift 5 to open and close synchronously.

[0026] The specific steps are as follows:

[0027] The car stopper closing process: When high-pressure oil is output from port A of hydraulic pump station 1, the high-pressure oil enters the piston chamber of left drive cylinder 2 through piston chamber port A1, pushing the piston rod of left drive cylinder 2 to extend; at the same time, the hydraulic oil in the piston rod chamber of left drive cylinder 2 is squeezed and flows through port B1 through the series oil circuit through piston chamber port A2 into the piston chamber of right drive cylinder 3, driving the piston rod of right drive cylinder 3 to extend synchronously; the two car stops clamp the rail synchronously with the extension of the cylinders, completing the car stopper closing and blocking the mine car.

[0028] The car stopper opening process: When high-pressure oil is output from port B of hydraulic pump station 1, the high-pressure oil enters the piston rod chamber of right drive cylinder 3 through piston rod chamber port B2, pushing the piston rod of right drive cylinder 3 to retract; at the same time, the hydraulic oil in the piston chamber of right drive cylinder 3 is squeezed and flows into the piston rod chamber of left drive cylinder 2 through the series oil circuit via piston rod chamber port B1, driving the piston rod of left drive cylinder 2 to retract synchronously; the two car stops are simultaneously removed from the track as the cylinders retract, completing the opening of the car stopper and allowing the mine car to pass.

[0029] In some embodiments, such as Figure 1 As shown, under the premise that the left and right drive cylinders are of the same specifications, the oil inlet volume of the piston chamber of the right drive cylinder 3 is equal to the oil outlet volume of the piston rod chamber of the left drive cylinder 2, but less than the oil inlet volume of the piston chamber of the left drive cylinder 2. This difference in oil volume results in adjustable space at the far end position of the piston rod of the right drive cylinder 3, providing conditions for the precise setting of the right gear's closed position. To achieve this adjustment function, a left regulating valve 8 is provided between the piston chamber and piston rod chamber of the left drive cylinder 2, and a right regulating valve 9 is provided between the piston chamber and piston rod chamber of the right drive cylinder 3. By controlling the opening and closing states of the left regulating valve 8 and the right regulating valve 9, the hydraulic oil flow path in the corresponding cylinder can be flexibly changed, thereby precisely fine-tuning the closed position of the right gear to maintain consistency with the closed position of the left gear.

[0030] Example 2

[0031] To address emergencies such as electrical system failures and hydraulic pump station 1 malfunctions, and to ensure rapid handling and clearing of blocked vehicles, such as... Figure 2 As shown, this embodiment is also equipped with an external manual hydraulic pump station 10, which can be installed at the cage entrance in a position easily accessible to operators. The high-pressure oil output by the manual hydraulic pump station 10 is used to force open the vehicle stopper and clear the blocked vehicles due to system failure. This avoids the need for staff to enter the narrow space inside the cage to clear obstacles, reducing potential safety hazards during the obstacle clearing process. It is safe and efficient.

[0032] The manual hydraulic pump station 10 includes a manual pump FB, a check valve FD, a relief valve FW, and several oil ports (outlet B3, inlet A3). The set pressure of the relief valve FW is higher than the rated pressure of the hydraulic pump station 1, ensuring that it is isolated from the manual hydraulic pump station 10 during normal system operation. The piston rod chamber of the right drive cylinder 3 is connected to the outlet B3 of the manual hydraulic pump station 10. The outlet B3 is connected to the oil tank through a first oil circuit (manual pump FB and check valve FD in series) for outputting high-pressure oil in emergencies. The piston chamber of the left drive cylinder 2 is connected to the inlet A3 of the manual hydraulic pump station 10. The inlet A3 is connected to the oil tank through a second oil circuit (relief valve FW in series) for recovering return oil and limiting pressure in emergencies.

[0033] I. System Normal State: Interruption Mechanism of Manual Hydraulic Pump Station 10

[0034] When hydraulic pump station 1 is working normally, manual hydraulic pump station 10 is in the oil circuit blocking state: the one-way valve FD can prevent the system working oil from flowing back into the manual hydraulic pump station 10, and at the same time, the set pressure of the relief valve FW is higher than the rated pressure of the system, and the relief valve FW remains closed, ensuring that the manual hydraulic pump station 10 does not interfere with the normal pressure transmission of the series cylinder oil circuit, and does not affect the synchronous action of the left and right drive cylinders and the normal function of the brake.

[0035] II. Emergency Fault Conditions: Operation Procedures and Principles of Manual Hydraulic Pump Station 10

[0036] When it is necessary to open the vehicle stopper in an emergency using the manual hydraulic pump station 10, the specific procedure is as follows:

[0037] Oil circuit connection relationship: The oil outlet B3 of the manual hydraulic pump station 10 is connected to the oil port B2 of the piston rod chamber of the right drive cylinder 3, and the oil inlet A3 is connected to the oil port A1 of the piston chamber of the left drive cylinder 2, forming an emergency drive oil circuit.

[0038] Manually driven cylinder retraction: The operator applies pressure through the manual pump FB, causing the outlet B3 of the manual hydraulic pump station 10 to output high-pressure oil. The high-pressure oil enters the piston rod chamber of the right drive cylinder 3 through the oil port B2, pushing the piston rod of the right drive cylinder 3 to retract. At the same time, the hydraulic oil in the piston chamber of the right drive cylinder 3 is squeezed by the series oil circuit to compress the piston rod chamber of the left drive cylinder 2. With the pressure transmission of the manual hydraulic pump station 10, the piston rod of the left drive cylinder 2 is driven to retract synchronously.

[0039] Oil return pressure limiting and overflow: The oil return generated by the piston rod retraction in the piston chamber of the left drive cylinder 2 flows into the oil inlet A3 of the manual hydraulic pump station 10 through the oil port A1. At this time, the overflow valve FW starts the pressure limiting function. When the oil return pressure exceeds the set value, the overflow valve FW opens and returns the overpressure oil to the oil tank of the manual hydraulic pump station 10.

[0040] Emergency clearing effect: When the left and right drive cylinders retract synchronously, the left gear 4 and right gear 5 are forcibly opened, thereby clearing the obstructed mine cars in the cage in time and restoring the passage capacity of the hoisting system.

[0041] Example 3

[0042] like Figure 3 As shown, since the basic positions of the pump station and hydraulic cylinders inside the hanging basket 7 are already determined, the available installation space is limited. If the drive hydraulic cylinder is used to directly drive the vehicle stop, it will encounter problems such as limited layout space and high installation difficulty. In order to reduce the installation complexity and facilitate subsequent on-site maintenance, in some embodiments, the following structural design is used to achieve effective transmission between the hydraulic cylinder and the vehicle stop:

[0043] The piston rod of the left drive cylinder 2 moves along the left cylinder guide rail 13, and the piston rod of the right drive cylinder 3 moves along the right cylinder guide rail 14. Both the left and right cylinder guide rails are set inside the hanging basket 7, and the piston rod movement is constrained by the guide rails. The cylinder has one degree of freedom. The piston rod of the left drive cylinder 2 is hinged to the left vehicle stop 4 at point C through the left connecting rod 11. The left vehicle stop 4 rotates at point E. The piston rod of the right drive cylinder 3 is hinged to the right vehicle stop 5 at point D through the right connecting rod 12. The right vehicle stop 5 rotates at point F, forming a transmission link of "cylinder → connecting rod → vehicle stop", which converts the linear motion of the cylinder into the rotational motion of the vehicle stop.

[0044] The forward and reverse driving process of the vehicle gear in this embodiment:

[0045] 1. Parking brake closed (blocking vehicles)

[0046] When the piston port A1 of the left drive cylinder 2 is connected to the high-pressure oil output from port A of the hydraulic pump station 1, the piston rod of the left drive cylinder 2 extends along the left cylinder guide rail 13, and at the same time, the piston rod of the right drive cylinder 3 extends synchronously along the right cylinder guide rail 14 under the action of the series oil circuit; the piston rods of the two cylinders transmit power through the left connecting rod 11 and the right connecting rod 12 respectively, driving the left vehicle stop 4 to rotate around axis E and the right vehicle stop 5 to rotate around axis F towards the track 6, and finally the two vehicle stops fit into the track to complete the closing, thereby blocking the vehicle.

[0047] 2. Open the vehicle barrier (allow the vehicle to pass).

[0048] During reverse operation, the piston rod chamber of the right drive cylinder 3 is connected to the high-pressure oil supplied by port B of the hydraulic pump station 1. The piston rod of the right drive cylinder 3 retracts along the right cylinder guide rail 14, and the piston rod of the left drive cylinder 2 retracts synchronously along the left cylinder guide rail 13. After the power is transmitted through the left connecting rod 11 and the right connecting rod 12, it drives the left vehicle stop 4 to rotate around axis E and the right vehicle stop 5 to rotate around axis F in the opposite direction to the track 6, until the two vehicle stops are completely disengaged from the track, and the vehicle is released.

[0049] If there is a deviation in the closing position of the left gear 4 and the right gear 5, the left regulating valve 8 and the right regulating valve 9 can be opened. By coordinating the opening and closing of the left regulating valve 8 and the right regulating valve 9, the extension of the piston rod of the right drive cylinder 3 can be adjusted so that the left gear 4 and the right gear 5 are precisely aligned in the closed state. After the adjustment is completed, the two regulating valves are closed to complete the calibration without disassembling the transmission structure. In general, the left drive cylinder 2 and the right drive cylinder 3 are selected to be of the same model. Such selection may lead to a difference in the working stroke of the two cylinders. By precisely designing the position of the hinge point C of the left gear 4 and the hinge point D of the right gear 5, the difference in cylinder stroke can be compensated to ensure that the rotation angle of the left gear 4 and the right gear 5 is consistent, and to ensure that they fit the track when closed.

[0050] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this utility model and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

Claims

1. A tank-mounted vehicle stop driven by two tandem hydraulic cylinders, comprising a hydraulic pump station (1), a left vehicle stop (4), and a right vehicle stop (5), characterized in that, It also includes a hanging basket (7) fixed under the bottom plate of the cage, a left drive cylinder (2) for driving the left gear (4), and a right drive cylinder (3) for driving the right gear (5). The hydraulic pump station (1), the left drive cylinder (2) and the right drive cylinder (3) are installed in the hanging basket (7). The piston rod chamber of the left drive cylinder (2) is connected to the piston chamber of the right drive cylinder (3), forming a series oil circuit structure of the left drive cylinder (2) and the right drive cylinder (3). The piston chamber of the left drive cylinder (2) is connected to the inlet and outlet port A of the hydraulic pump station (1), and the piston rod chamber of the right drive cylinder (3) is connected to the inlet and outlet port B of the hydraulic pump station (1). The hydraulic pump station (1) is used to drive the left drive cylinder (2) and the right drive cylinder (3) to extend and retract synchronously, thereby driving the left gear (4) and the right gear (5) to open and close simultaneously.

2. The tank-mounted vehicle stopper driven by a series of dual hydraulic cylinders according to claim 1, characterized in that, The left drive cylinder (2) has a left regulating valve (8) that can communicate with the piston chamber and the piston rod chamber, and the right drive cylinder (3) has a right regulating valve (9) that can communicate with the piston chamber and the piston rod chamber.

3. The tank-mounted vehicle stopper driven by a series of dual hydraulic cylinders according to claim 1, characterized in that, It also includes a manual hydraulic pump station (10) for outputting high-pressure oil to drive the left and right drive cylinders to retract, the manual hydraulic pump station (10) including a manual pump FB, a check valve FD, a relief valve FW and several oil ports; The piston rod chamber of the right drive cylinder (3) is connected to the oil outlet B3 of the manual hydraulic pump station (10). The oil outlet B3 is connected to the oil tank through the first oil circuit. The first oil circuit is equipped with a manual pump FB and a check valve FD. The piston chamber of the left drive cylinder (2) is connected to the oil inlet A3 of the manual hydraulic pump station (10). The oil inlet A3 is connected to the oil tank through the second oil circuit. An overflow valve FW is installed on the second oil circuit.

4. A tank-mounted vehicle stopper driven by a series of dual hydraulic cylinders according to claim 3, characterized in that, It also includes a left hydraulic cylinder guide rail (13) and a right hydraulic cylinder guide rail (14) set inside the hanging basket (7); The piston rod of the left drive cylinder (2) moves along the left cylinder guide rail (13), and the piston rod of the left drive cylinder (2) drives the left gear (4) to open and close through the left connecting rod (11). The piston rod of the right drive cylinder (3) moves along the right cylinder guide rail (14), and the piston rod of the right drive cylinder (3) drives the right gear (5) to open and close through the right connecting rod (12).

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