Automobile manufacturing lifting conveying flow transfer device

Abstract

This invention relates to the field of automobile manufacturing equipment technology, specifically to an automobile manufacturing lifting and conveying transfer device, including an intermediate transfer frame and docking conveying units. Multiple conveying units are docked to two or three sides of one intermediate transfer frame. The intermediate transfer frame includes an outer frame, within which are independently movable longitudinal and transverse clamping frames, which remain perpendicular and non-contacting. Double-ended clamping blocks are movably connected between the longitudinal and transverse clamping frames. A support platform is connected to one side of the double-ended clamping block on the outer frame, and a variable weight block is connected to the other side. The variable weight block is hollow and connected to a fluid pump via a pipe. The device also includes a handling robot, whose end effector is connected to a handling fixture via a weighing sensor. The intermediate transfer frame and the left and right conveying units are all installed flush with the building facade. This automobile manufacturing lifting and conveying transfer device can fully utilize the vertical space of the factory, flexibly dock at multiple heights and in multiple directions, and can dynamically counterweight and balance the conveying transfer in real time.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing equipment technology, specifically to an automobile manufacturing lifting and conveying transfer device. Background Technology

[0002] In automotive parts manufacturing and assembly workshops, workpieces, tooling, and various accessories need to be continuously transported between workstations at different processes and heights. Currently, material handling in workshops primarily relies on planar belt conveyors and roller conveyors, while vertical transport depends on ordinary hoists or reciprocating lifts. These methods generally suffer from the following drawbacks in practical applications: 1. Low space utilization: Equipment is mostly arranged along the central plane of the factory building, which cannot effectively utilize the vertical space against the walls around the factory building, thus encroaching on the core production operation area and resulting in low land utilization efficiency in the workshop.

[0003] 2. Poor compatibility: When docking at multiple workstations and at multiple heights, multiple independent lifting machines and transfer mechanisms are required. The system structure is complex, the equipment cost is high, and the multiple transfer links can easily cause conveying jams, making it difficult to adapt to the rapid production changeover requirements of flexible production lines.

[0004] 3. Insufficient stability during transport: Conventional lifting platforms mostly use fixed counterweights or spring counterweights, which cannot be dynamically adjusted in real time according to the weight of the workpiece; when transporting automotive parts of different weights, the platform is prone to tilting and vibration, and precision appearance parts and functional parts are at risk of collision damage.

[0005] 4. Single conveying direction: Conventional transfer platforms can only achieve single linear conveying. Multi-directional flow requires additional steering mechanisms, resulting in low transfer efficiency and reduced system reliability.

[0006] Therefore, there is an urgent need in the field for an automotive manufacturing lifting and conveying transfer device that can make full use of the vertical space of the factory, flexibly connect at multiple heights and in multiple directions, and dynamically counterweight in real time, in order to solve the above-mentioned deficiencies in the prior art. Summary of the Invention

[0007] The purpose of this invention is to provide an automobile manufacturing lifting and conveying transfer device, which solves the technical problems of low utilization rate of wall space, poor adaptability to multi-height and multi-directional docking, insufficient dynamic counterweight capacity, and weak workpiece conveying stability of existing conveying equipment through technical means.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An automobile manufacturing lifting and conveying transfer device includes an intermediate transfer frame and docking conveying units. Multiple conveying units are docked on two or three sides of one intermediate transfer frame. The intermediate transfer frame includes a vertical outer frame. Each of the outer frame is provided with an independently movable longitudinal clamping frame and a transverse clamping frame. Whether in motion or at rest, the two remain perpendicular and do not contact each other. A double-ended clamping block is movably connected between the longitudinal clamping frame and the transverse clamping frame. The range of motion of the double-ended clamping block is limited to the inner perimeter of the outer frame. The double-ended clamping block is located on the outer frame: One side is connected to a support platform, on which a horizontally arranged omnidirectional ball conveying mechanism is connected; the other side is connected to a variable weight block, which is hollow inside and connected to a fluid pump through a flexible pipe. It also includes a handling robot, the end effector of which is connected to a handling fixture unit via a weighing sensor; the handling robot is positioned next to the intermediate transfer frame and handles automotive parts to the omnidirectional ball conveyor mechanism on it; The intermediate transfer frame and the conveying units on both sides of the intermediate transfer frame are all set to fit the building facade, making full use of the vertical space against the wall inside the automobile manufacturing plant.

[0009] Furthermore, the double-ended clamping block includes a central body, with a transverse protrusion and a longitudinal protrusion connected to the front and rear sides of the central body, respectively, and the transverse protrusion and the longitudinal protrusion are perpendicular to each other; a transverse clamping groove is provided in the transverse clamping frame to accommodate the transverse protrusion to move laterally therein, and a longitudinal clamping groove is provided in the longitudinal clamping frame to accommodate the longitudinal protrusion to move longitudinally therein, and the central body is clamped between the longitudinal clamping frame and the transverse clamping frame.

[0010] Furthermore, the front end of the transverse convex body is vertically connected to the horizontally arranged support platform via a turning bracket, and the rear end of the longitudinal convex body is connected to a variable weight block, the center of gravity of which is variable as needed and always located below the central body.

[0011] Furthermore, the upper surface of the omnidirectional ball conveying mechanism is connected to conveying balls in a one-to-one movable manner through ball frames. The ball frames are evenly arranged in an X*X (where X≥9) point layout, and the upper apex of all conveying balls is at the same height. Some of them are active conveying balls, and the other part are passive conveying balls.

[0012] Furthermore, the inner circumference of the outer frame is provided with longitudinal and transverse assembly screws, which are perpendicular to each other and spaced apart. The longitudinal assembly screw is connected to both ends of the transverse clamping frame through a longitudinal threaded sleeve slider, and the transverse assembly screw is connected to both ends of the longitudinal clamping frame through a transverse threaded sleeve slider. The longitudinal assembly screw includes two parallel and spaced screws, which rotate synchronously but in opposite directions. The transverse assembly screw is set up similarly. The operation of each screw drives the double-end clamping block to move up, down, left, and right within the outer frame. The control system moves the universal ball conveying mechanism to the receiving front end of the corresponding conveying unit through the support platform according to the program, realizing the vertical spatial flow and conveying of automotive parts.

[0013] Furthermore, the conveying unit is arranged in multiple height levels. The left and right sides of the intermediate transfer frame are each provided with conveying units of ≥2 height levels. The conveying units can be connected front and rear to match different conveying route length requirements. In a specific embodiment, the left side is provided with a conveying unit of two height levels and the right side is provided with a conveying unit of three height levels.

[0014] Furthermore, a conveying unit is provided on the front side of the intermediate transfer frame, and this conveying unit is arranged perpendicularly to the conveying units on the left and right sides of the intermediate transfer frame.

[0015] Furthermore, both the transverse and longitudinal protrusions are provided with a retaining step between themselves and the central body, and the retaining step is located between the longitudinal and transverse clamping frames.

[0016] Furthermore, the variable weight block is connected to a fluid pump via a fluid delivery pipeline. The fluid pump has a bidirectional function of filling and pumping, and the medium flowing through the variable weight block, pipeline, and fluid pump is a high-density particulate mixed liquid viscous fluid.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The intermediate transfer frame and the two side conveying units of this invention are all set to fit against the factory wall, transforming the originally idle vertical space against the wall into a three-dimensional conveying channel, freeing up the core production operation area in the middle of the factory, which is especially suitable for the three-dimensional logistics layout of automotive parts workshops, and the effect of increasing the production capacity per unit area is significant. 2. This invention enables precise movement of the double-end clamping blocks at any point in the plane within the outer frame through the independent orthogonal movement of the longitudinal and transverse clamping frames. It can simultaneously connect to conveying units of multiple heights on both the left and right sides. After expanding the front conveying unit, it can achieve three-way transfer without the need for additional transfer mechanisms, and can flexibly adapt to the conveying routes of different processes. 3. This invention relies on the weighing sensor at the end of the handling robot to collect the weight of the workpiece in real time, and controls the fluid pump to fill or draw high-density fluid into the variable weight block, and adjusts the counterweight on the opposite side in real time to ensure that the double-end clamping blocks and the support platform always maintain horizontal torque balance, avoid the tilting and slipping of the workpiece in the automobile transport, and ensure the safe transfer of precision automobile parts. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the present invention. Figure 3 This is a front structural diagram of the intermediate transfer frame in this invention; Figure 4 This is a three-dimensional structural diagram of the double-ended clamping block in this invention; Figure 5This is a schematic diagram of the side structure of the double-ended clamping block in this invention; Figure 6 This is a three-dimensional structural diagram of Embodiment 2 of the present invention; The markings in the diagram are as follows: 1. Intermediate transfer frame; 1a. Outer frame; 1b. Longitudinal clamping frame; 1c. Transverse clamping frame; 1d. Double-end clamping block; 1d-1. Central body; 1d-2. Transverse convex body; 1d-3. Longitudinal convex body; 1e. Support platform; 1f. Variable weight block; 1g. Universal ball conveyor mechanism; 1h. Longitudinal mounting screw; 1i. Transverse mounting screw; 1j. Longitudinal threaded sleeve slider; 1k. Transverse threaded sleeve slider; 2. Conveying unit; 3. Handling robot. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that if the terms "upper", "lower", "middle", "inner", "outer" are used to indicate the direction or positional relationship based on the direction or positional relationship shown in the accompanying drawings, they are only for the convenience of describing the technical solutions of the present invention 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, and therefore should not be construed as a limitation of the present invention.

[0020] Please see Figures 1-5 As shown, the automobile manufacturing lifting and conveying transfer device, in this embodiment one, has a two-sided docking layout, including a central transfer frame 1 and docking conveying units 2. Multiple conveying units 2 are docked to the left and right sides of one central transfer frame 1. The central transfer frame 1 and the conveying units 2 on the left and right sides are all installed and fixed against the building facade, and are arranged longitudinally along the factory wall, making full use of the vertical space against the wall in the automobile manufacturing plant without occupying the central production operation area.

[0021] The intermediate transfer frame 1 includes an upright outer frame 1a, which is a rectangular vertical steel frame. The bottom is fixed to the ground with anchor bolts, and the back is connected to the wall with expansion bolts, ensuring a stable overall structure. Within the outer frame 1a are two independently movable longitudinal clamping frames 1b and 1c: the longitudinal clamping frame 1b extends vertically and can move horizontally left and right; the 1c extends horizontally and can move vertically up and down. Whether in a moving or stationary state, the longitudinal clamping frame 1b and the 1c always remain perpendicular and orthogonal, with a gap between them to prevent interference during movement.

[0022] A double-ended clamping block 1d is movably connected between the longitudinal clamping frame 1b and the transverse clamping frame 1c. The range of motion of the double-ended clamping block 1d is limited to the inner rectangular area of ​​the outer frame 1a. Specifically, the double-ended clamping block 1d includes a central body 1d-1. The front and rear sides of the central body 1d-1 are respectively integrally formed with a transverse protrusion 1d-2 and a longitudinal protrusion 1d-3. The transverse protrusion 1d-2 protrudes horizontally towards the inside of the workshop, and the longitudinal protrusion 1d-3 protrudes vertically towards the wall. The two are perpendicular to each other in space.

[0023] The transverse clamping frame 1c has a transversely extending clamping groove on its inner side facing the center. The transverse protrusion 1d-2 is embedded in the transverse clamping groove and can slide laterally left and right along the groove. The longitudinal clamping frame 1b has a longitudinally extending clamping groove on its inner side facing the center. The longitudinal protrusion 1d-3 is embedded in the longitudinal clamping groove and can slide vertically up and down along the groove. The central body 1d-1 is clamped between the longitudinal clamping frame 1b and the transverse clamping frame 1c. The connection between the transverse protrusion 1d-2, the longitudinal protrusion 1d-3 and the central body 1d-1 is provided with annular locking steps. The locking steps fit against the side of the corresponding clamping frame, which not only restricts the forward and backward movement of the double-ended clamping blocks 1d, but also precisely ensures that the longitudinal clamping frame 1b and the transverse clamping frame 1c always maintain a safe distance and do not contact each other.

[0024] A support platform 1e is provided on the side of the double-ended clamping block 1d facing the inside of the workshop. The support platform 1e is a horizontal rectangular plate structure. The front end of the transverse protrusion 1d-2 is vertically fixed to the bottom surface of the support platform 1e through an L-shaped turning bracket, ensuring that the support platform 1e always remains horizontal in any position. A horizontally arranged universal ball conveying mechanism 1g is fixedly installed on the upper surface of the support platform 1e.

[0025] The omnidirectional ball conveyor mechanism 1g includes a base plate and an array of ball frames. The ball frames are evenly fixed to the upper surface of the base plate at 11×11=121 points. Each ball frame contains a steel conveying ball that is movably embedded in it through a wear-resistant bushing. The upper apexes of all the conveying balls are on the same horizontal plane, forming a flat workpiece bearing surface. Some of the conveying balls are active, each equipped with a miniature friction drive wheel and a servo drive motor at its bottom. They can drive the conveying ball to rotate around any horizontal axis through friction, providing controllable conveying power for the workpiece. The rest are driven conveying balls that can rotate freely in all directions, mainly serving as bearing support and auxiliary steering functions. During operation, by controlling the rotation direction and speed of different active conveying balls, the workpiece can be driven to translate in any direction on the bearing surface, achieving smooth docking with conveying units 2 facing different directions without any jamming.

[0026] A variable weight 1f is connected to the wall-facing side of the double-ended clamping block 1d, and is fixedly installed at the rear end of the longitudinal protrusion 1d-3. The variable weight 1f is a hollow, sealed steel shell with a design that is wider at the bottom and narrower at the top, ensuring that its center of gravity is always vertically below the central body 1d-1, guaranteeing the vertical stability of the counterweight. The variable weight 1f is connected to an external bidirectional fluid pump via a high-pressure resistant soft fluid delivery pipe, and the fluid pump has both filling and suction capabilities.

[0027] The circulating medium in the pipeline and variable weight block 1f is a high-density particulate mixed liquid viscous fluid. Specifically, it can be a suspension prepared by mixing tungsten sand and methyl silicone oil. Its density can reach 3 to 4 times that of ordinary water. It has a large mass per unit volume, and only a small volume change is needed to achieve a large counterweight adjustment. It has a fast response speed and can be adapted to the production rhythm of rapid conveying in the automotive workshop.

[0028] Specifically, in combination Figure 2 , Figure 3 The inner perimeter of the outer frame 1a is equipped with longitudinally aligned lead screws 1h and transversely aligned lead screws 1i, which are spatially perpendicular to each other and have a safe distance between them, preventing motion interference. The longitudinally aligned lead screws 1h consist of two parallel, spaced-apart vertical lead screws, respectively arranged in the left and right side frames of the outer frame 1a. The bottom ends of the two lead screws are connected by a synchronous transmission mechanism and driven by the same servo drive motor, maintaining synchronized speeds and opposite rotation directions. Each lead screw is fitted with a longitudinal threaded sleeve slider 1j, and the two longitudinal threaded sleeve sliders 1j are fixedly connected to the left and right ends of the transverse clamping frame 1c, respectively. When the longitudinally aligned lead screws 1h rotate, they drive the transverse clamping frame 1c to smoothly rise and fall vertically, which in turn drives the double-end clamping blocks 1d to move longitudinally up and down via the transverse protrusions 1d-2.

[0029] The transverse mounting screw 1i includes two parallel, spaced-apart horizontal screws, respectively arranged in the upper and lower side frames of the outer frame 1a. The ends of the two screws are connected by a synchronous gear mechanism to maintain synchronous rotation speed and opposite rotation directions. Each screw is equipped with a transverse threaded sleeve slider 1k, and the two transverse threaded sleeve sliders 1k are fixedly connected to the upper and lower ends of the longitudinal clamping frame 1b, respectively. When the transverse mounting screw 1i rotates, it drives the longitudinal clamping frame 1b to move smoothly in the horizontal direction, which in turn drives the double-end clamping block 1d to move laterally left and right through the longitudinal protrusion 1d-3.

[0030] Driven by the coordinated action of the longitudinal mounting screw 1h and the transverse mounting screw 1i, the double-end clamping block 1d can move to any coordinate point within the rectangular plane surrounding the outer frame 1a; the PLC control system precisely moves the support platform 1e and the universal ball conveying mechanism 1g to the receiving front end of the corresponding conveying unit 2 according to the preset program, realizing the vertical spatial transfer and conveying of automotive parts between different heights and different workstations.

[0031] The conveying unit 2 adopts a roller combined with a transmission belt conveyor structure, and is fixed to the wall support in multiple height levels. In this embodiment, a two-level conveying unit 2 is set on the left side of the intermediate transfer frame 1, and a three-level conveying unit 2 is set on the right side; each level of the conveying unit 2 can be extended forward and backward along the conveying direction to match the length requirements of different conveying routes and flexibly adapt to the layout of different processes.

[0032] This device also includes a handling robot 3, which is a six-axis industrial robot positioned inside the workshop side of the intermediate transfer frame 1. The end effector of the handling robot 3 is connected to a handling fixture unit via a high-precision weighing sensor. The handling fixture can be replaced with a gripper or suction cup structure depending on the workpiece type. The handling robot 3 is responsible for picking up automotive parts from the upstream workstation and transferring them to the omnidirectional ball conveyor mechanism 1g. The weighing sensor can detect the mass data of the picked automotive parts in real time and transmit it to the central control system.

[0033] The complete working principle of this embodiment is as follows: In the initial state, the double-ended clamping block 1d remains in the initial standby position, and the high-density fluid with pre-stored basic capacity in the variable weight block 1f keeps the unloaded torque balanced between the support platform side and the variable weight block side.

[0034] When a workpiece needs to be transferred out, the handling robot 3 grabs the target automotive part, and the end-effector weighing sensor detects the weight of the workpiece in real time and transmits the weight signal to the main control system. The control system calculates the required counterweight mass according to the lever torque balance principle, and then controls the bidirectional fluid pump to fill or draw high-density particle mixed liquid viscous fluid into the variable weight block 1f, dynamically adjusting the total mass of the variable weight block 1f to ensure that the front and rear torques of the double-end clamping block 1d are always balanced.

[0035] After the counterweight adjustment is completed, the handling robot 3 places the car parts smoothly on the universal ball conveyor mechanism 1g; at this time, the double-end clamp 1d remains horizontal due to the balanced counterweight, without tilting or shaking.

[0036] Subsequently, the control system drives the longitudinal alignment screw 1h and the transverse alignment screw 1i to work together, moving the double-end clamping block 1d to the docking height and docking position of the target conveying unit 2. After reaching the position, the active conveying ball of the universal ball conveying mechanism 1g starts in the set direction, smoothly conveying the automotive parts to the corresponding conveying unit 2, completing one transfer operation.

[0037] Conversely, when a workpiece needs to be transferred from the conveying unit 2 to the intermediate transfer frame 1, the control system first moves the universal ball conveyor 1g to the docking end of the corresponding conveying unit 2, and the conveying unit 2 sends the workpiece to the universal ball conveyor 1g; the auxiliary weighing module at the bottom of the support platform 1e detects the weight of the workpiece, and the control system synchronously adjusts the counterweight of the variable weight block 1f to maintain balance, and then moves the workpiece to the target picking station, where it is picked up by the handling robot 3 and sent to the downstream process. Example

[0038] This embodiment features a three-sided docking layout.

[0039] like Figure 6 As shown, based on Embodiment 1, this embodiment further adds a conveying unit 2 to the front side of the intermediate transfer frame 1. This side conveying unit 2 is arranged perpendicularly to the conveying units 2 on the left and right sides of the intermediate transfer frame 1, forming a layout with the left, right and front sides connected.

[0040] In this embodiment, the intermediate transfer frame 1 can simultaneously realize the transfer of workpieces in three directions: left, right and front. The front conveying unit 2 can connect to the work station or main conveying line in the middle of the factory. The left and right conveying units are arranged along the wall to connect the work stations of each layer of process, which further expands the networking capability of the conveying route and is suitable for automotive assembly or core component assembly workshops with more complex processes and more transfer paths.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. For those skilled in the art, various changes, modifications or additions made without departing from the concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automobile manufacturing lifting and conveying transfer device, comprising an intermediate transfer frame (1) and docking conveying units (2), wherein multiple conveying units (2) are docked on two or three sides of one intermediate transfer frame (1), characterized in that: The intermediate transfer frame (1) includes an outer frame (1a), and the outer frame (1a) is provided with a longitudinal clamping frame (1b) and a transverse clamping frame (1c) that are each independently movable, and the two are kept perpendicular and do not contact each other; A double-ended clamping block (1d) is movably connected between the longitudinal clamping frame (1b) and the transverse clamping frame (1c), and the range of motion of the double-ended clamping block (1d) is limited to the inner perimeter of the outer frame (1a); The double-ended clamping block (1d) is located in the outer frame (1a): One side is connected to a support platform (1e), on which a horizontally arranged universal ball conveying mechanism (1g) is connected; the other side is connected to a variable weight block (1f), and a fluid pump is connected inside the variable weight block (1f) through a pipe; It also includes a handling robot (3), the end of which is connected to a handling fixture unit via a weighing sensor; The intermediate transfer frame (1) and the conveying units (2) on the left and right sides of the intermediate transfer frame (1) are all set to fit the building facade.

2. The automobile manufacturing lifting and conveying transfer device according to claim 1, characterized in that: The double-ended clamping block (1d) includes a central body (1d-1), with a transverse protrusion (1d-2) and a longitudinal protrusion (1d-3) connected to its front and rear sides respectively; a transverse clamping groove is provided in the transverse clamping frame (1c) to accommodate the transverse protrusion (1d-2) to move therein, and a longitudinal clamping groove is provided in the longitudinal clamping frame (1b) to accommodate the longitudinal protrusion (1d-3) to move therein, and the central body (1d-1) is clamped between the longitudinal clamping frame (1b) and the transverse clamping frame (1c).

3. The automobile manufacturing lifting and conveying transfer device according to claim 2, characterized in that: The front end of the transverse convex body (1d-2) is vertically connected to the support platform (1e) via a turning bracket, and the rear end of the longitudinal convex body (1d-3) is connected to a variable weight block (1f). The center of gravity of the variable weight block (1f) can be changed as needed and is always located below the central body (1d-1).

4. The automobile manufacturing lifting and conveying transfer device according to claim 3, characterized in that: The upper surface of the omnidirectional ball conveying mechanism (1g) is connected to conveying balls one-to-one by ball frames. The ball frames are evenly arranged in an X*X point layout, and the upper apex of all conveying balls is at the same height. Some of them are active conveying balls, and the other part are passive conveying balls.

5. The automobile manufacturing lifting and conveying transfer device according to claim 4, characterized in that: The outer frame (1a) is provided with a longitudinal mounting screw (1h) and a transverse mounting screw (1i) inside. The two are perpendicular and are spaced apart. The longitudinal mounting screw (1h) is connected to both ends of the transverse clamping frame (1c) through a longitudinal threaded sleeve slider (1j). The transverse mounting screw (1i) is connected to both ends of the longitudinal clamping frame (1b) through a transverse threaded sleeve slider (1k).

6. The automobile manufacturing lifting and conveying transfer device according to claim 5, characterized in that: The conveying unit (2) is set in multiple heights. The left and right sides of the intermediate transfer frame (1) are each provided with a conveying unit (2) of ≥2 heights. The conveying units (2) can be connected front and back.

7. The automobile manufacturing lifting and conveying transfer device according to claim 6, characterized in that: A conveying unit (2) is provided on the front side of the intermediate transfer frame (1), and the conveying unit (2) on this side is perpendicular to the conveying units (2) on the left and right sides of the intermediate transfer frame (1).

8. The automobile manufacturing lifting and conveying transfer device according to claim 5, characterized in that: Both the transverse convex body (1d-2) and the longitudinal convex body (1d-3) are provided with a blocking step between them and the central body (1d-1). The blocking step is located between the longitudinal clamping frame (1b) and the transverse clamping frame (1c).

9. The automobile manufacturing lifting and conveying transfer device according to claim 3, characterized in that: The variable weight block (1f) is connected to a fluid pump through a fluid delivery pipeline. The fluid pump has a bidirectional function of filling and pumping. The medium flowing through the variable weight block (1f), the pipeline, and the fluid pump is a high-density particulate mixed liquid viscous fluid.

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