Multi-station water injection machine

Abstract

The embodiment of the application provides a multi-station water injection machine, which comprises a water tank, a rotating assembly for driving the water tank to rotate, a jacking assembly for driving the rotating assembly to lift and fall, and a rack assembly for supporting the jacking assembly; the rotating assembly comprises a rotating shaft connected to the jacking assembly, and the water tank has two or more than two water tanks arranged around the rotating shaft. The multi-station water injection in the application is provided with a rotating assembly, the rotating assembly can be provided with a plurality of water tanks according to needs, and in specific work, only the water tank corresponding to the toilet to be detected needs to be rotated to the upper side of the detection station, and then the water tank can be connected with the toilet to be detected, so that the rapid replacement of the water tank during the online detection of different models of toilet products is met.

Description

Technical Field

[0001] This invention relates to the field of water injection devices, and more specifically, to a multi-station water injection machine. Background Technology

[0002] Before leaving the factory, toilets need to undergo certain performance tests, including flushing tests (marking lines, inserting gauze, inserting PP balls, or other test subjects). Current toilet testing equipment typically involves fixing the water tank in place. Once the toilet to be tested is conveyed to the testing station, the toilet and water tank are connected to test the flushing performance. However, a production line may typically handle the production of multiple toilet models, each with its own corresponding water tank model. Therefore, it's often necessary to install the appropriate water tank at the testing station based on the toilet model, and then replace the tank after testing that model, which is very inconvenient. Another approach is to set up multiple testing stations, each with a different water tank model to match different toilet models. This allows different toilet models to be transferred to designated stations for testing. However, setting up multiple testing stations requires multiple toilet conveying devices, necessitating more space and increasing production costs.

[0003] Therefore, this application is hereby submitted. Summary of the Invention

[0004] The objectives of this invention include, for example, providing a multi-station water injection machine that enables a single testing station to be adapted to test multiple models of toilets, thereby improving the convenience of testing while reducing floor space and production costs.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a multi-station water injection machine, including a water tank, a rotating assembly for driving the water tank to rotate, a lifting assembly for driving the rotating assembly to rise and fall, and a frame assembly for supporting the lifting assembly.

[0007] The rotating assembly includes a rotating shaft connected to the lifting assembly, and there are two or more water tanks arranged around the rotating shaft.

[0008] In an optional embodiment, the rotating assembly includes a slewing bearing, the inner ring of which is fixed to the lifting assembly and the outer ring of which is fixed to a rotating shaft plate, and the rotating shaft is fixed to the rotating shaft plate.

[0009] Preferably, each water tank is provided with a corresponding fixing frame. The fixing frame includes a supporting crossbar, a U-shaped adjusting component, an L-shaped adjusting component, and a placement plate for placing the water tank. The U-shaped adjusting component has a first elongated hole on both sides and a first mounting hole in the middle. The L-shaped adjusting component has a second elongated hole on one side and a second mounting hole on the other side. One end of the supporting crossbar is fixed to a rotating shaft, and the other end has a third mounting hole that matches the position of the first elongated hole. A first bolt passes through the first elongated hole and the third mounting hole in sequence to fix the U-shaped adjusting component to the supporting crossbar. A second bolt passes through the second elongated hole and the first mounting hole in sequence to fix the L-shaped adjusting component to the U-shaped adjusting component. A third bolt passes through the placement plate and the second mounting hole in sequence to fix the placement plate to the L-shaped adjusting component.

[0010] In an optional embodiment, the rotating shaft plate is provided with a positioning pin hole, and the top of the lifting assembly is provided with a positioning hole. There are two or more positioning pin holes and positioning holes that correspond to the position of the water tank.

[0011] In optional embodiments, a water inlet assembly and / or a water replenishment assembly are also included.

[0012] The water inlet assembly includes a main water pipe connected to a water source and branch pipes for connecting the main water pipe and the water tank, wherein the number of branch pipes is greater than or equal to the number of water tanks.

[0013] The water replenishment component includes a water replenishment tank, which is equipped with an inlet pipe, an overflow pipe, and a water replenishment pipe for replenishing water to the water tank. Valves are installed on both the inlet pipe and the outlet pipe.

[0014] In an optional embodiment, the main water pipe includes a fixed section connected to a water source, a rotating section that can rotate with the rotating assembly, and a slip ring connecting the fixed section and the rotating section.

[0015] In an optional embodiment, the lifting assembly includes a lifting cylinder, the cylinder barrel of which is fixed to the frame, a cylinder top plate is fixed to the extension shaft of the lifting cylinder, and the inner ring of the slewing bearing is fixed to the cylinder top plate.

[0016] In an optional embodiment, a protective cover is provided on the frame surrounding the lifting cylinder, and a guide shaft that can move up and down along the cover is provided inside the cover. The top end of the guide shaft is fixed to the top plate of the cylinder, and a linear bearing is provided between the guide shaft and the corresponding protective cover.

[0017] In an optional embodiment, a base plate is fixed on the frame, the cylinder of the lifting cylinder is fixed on the base plate, a bellows cover that can extend and retract in the vertical direction is provided between the base plate and the cylinder top plate, and a waterproof cover is provided on the cylinder top plate, the waterproof cover surrounding the outside of the slewing bearing.

[0018] In an optional embodiment, a water pipe through hole is provided on the cylinder top plate, and the fixed section of the main water pipe passes through the bellows cover and the water pipe through hole in sequence and connects to the rotating section.

[0019] In an optional embodiment, the frame assembly includes a base supporting the lifting assembly, a longitudinal support frame fixed on the base, and a transverse support frame fixed to the top of the longitudinal support frame, with the water tank disposed on the transverse support frame.

[0020] The beneficial effects of the embodiments of the present invention include, for example:

[0021] The multi-station water injection system in this application features a rotating assembly. This assembly can be equipped with multiple water tanks as needed. During operation, it is only necessary to rotate the water tank corresponding to the toilet to be tested to the top of the testing station and then connect it to the toilet. This allows for the rapid replacement of water tanks when different toilet models are tested. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is the assembly drawing of the multi-station water injection machine in this application;

[0024] Figure 2 This is a schematic diagram of the rotating component.

[0025] Figure 3 for Figure 2 Enlarged view of part A;

[0026] Figure 4 This is a cross-sectional view of the rotating component;

[0027] Figure 5 This is a schematic diagram of the lifting assembly.

[0028] Figure 6 This is a schematic diagram of part of the lifting component structure;

[0029] Figure 7 This is a schematic diagram of the water replenishment component.

[0030] Figure 8 This is a structural diagram of the rack assembly.

[0031] Icons: 100-Rotating assembly; 101-Rotating shaft; 102-Slewing bearing; 103-Rotating shaft plate; 104-Locking pin hole; 105-Support crossbar; 106-U-shaped adjusting component; 107-L-shaped adjusting component; 200-Lifting assembly; 201-Locking hole; 202-Lifting cylinder; 203-Cylinder top plate; 204-Guard cover; 205-Guide shaft; 206-Linear bearing; 2 07-Base plate; 208-Bell cover; 209-Waterproof cover; 210-Water pipe through hole; 301-Main water pipe; 302-Branch pipe; 303-Slip ring; 400-Water replenishment assembly; 401-Water replenishment tank; 402-Water inlet pipe; 403-Overflow pipe; 404-Water replenishment pipe; 500-Frame assembly; 501-Base; 502-Longitudinal support frame; 503-Transverse support frame; 600-Water tank. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this 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 this invention.

[0036] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0037] It should be noted that, where there is no conflict, the features in the embodiments of the present invention can be combined with each other.

[0038] Please refer to Figure 1-8 This embodiment provides a multi-station water injection machine, including a water tank 600, a rotating assembly 100 that drives the water tank 600 to rotate, a lifting assembly 200 that drives the rotating assembly 100 to rise and fall, and a frame assembly 500 for supporting the lifting assembly 200.

[0039] The rotating assembly 100 includes a rotating shaft 101 connected to the lifting assembly 200, and there are two or more water tanks 600 arranged around the rotating shaft 101.

[0040] The multi-station water injection machine in this embodiment is mainly used for testing the flushing performance of toilets, but it is not limited to this purpose and can also be used in other similar scenarios. Through the cooperation of the rotating component 100 and the lifting component 200, the multi-station water injection machine in this embodiment can achieve the rotation and lifting of the water tank 600. In specific applications, when the toilet to be tested is transported to the testing station, the corresponding water tank 600 can be moved above the testing station, and then the lifting component 200 drives the water tank 600 downwards, connecting the water tank 600 with the toilet to be tested, thus enabling the testing of the toilet's flushing performance.

[0041] In this embodiment, there can be two or more water tanks 600. Specifically, there can be three, four, five or even more as needed. Those skilled in the art can choose according to the product type and site conditions.

[0042] In some embodiments of this application, the rotating assembly 100 includes a slewing bearing 102, the inner ring of which is fixed to the lifting assembly 200 and the outer ring of which is fixed to a rotating shaft plate 103, and the rotating shaft 101 is fixed to the rotating shaft plate 103.

[0043] The inner ring of the slewing bearing 102 is mounted on top of the lifting assembly 200, serving as the stator end, while the outer ring serves as the rotor end. It is connected to the rotating shaft 101 via a rotating shaft plate 103, enabling the rotating shaft 101 to rotate. The method of fixing the water tank 600 can be selected by those skilled in the art as needed. For example, it can be connected to the rotating shaft 101 via a fixing bracket. Specifically, the structure of the fixing bracket is related to the number of water tanks 600 corresponding to the rotating shaft 101. When there are many water tanks 600, to reduce or even avoid interference between adjacent water tanks 600 and to provide space for the installation of the water tanks 600, the distance between the water tanks 600 and the rotating shaft 101 needs to be relatively large. In some embodiments, the fixing bracket includes a placement plate for placing the water tank 600 and a connecting rod connecting the placement plate and the rotating shaft 101. The rotating shaft 101, the connecting rod, and the placement plate can be integrally formed or connected by welding or other methods.

[0044] In some preferred embodiments, each water tank 600 is provided with a corresponding fixing frame. The fixing frame includes a support crossbar 105, a U-shaped adjusting member 106, an L-shaped adjusting member 107, and a placement plate for placing the water tank 600. The U-shaped adjusting member 106 has a first elongated hole on both sides and a first mounting hole in the middle. The L-shaped adjusting member 107 has a second elongated hole on one side and a second mounting hole on the other side. One end of the support crossbar is fixed to a rotating shaft, and the other end has a third mounting hole that matches the position of the first elongated hole. A first bolt passes through the first elongated hole and the third mounting hole in sequence to fix the U-shaped adjusting member 106 to the support crossbar. A second bolt passes through the second elongated hole and the first mounting hole in sequence to fix the L-shaped adjusting member 107 to the U-shaped adjusting member 106. A third bolt passes through the placement plate and the second mounting hole in sequence to fix the placement plate to the L-shaped adjusting member 107. It allows for easy adjustment of the water tank's position in both vertical and horizontal directions to accommodate different water tank models, and the adjustment is flexible and convenient.

[0045] In some embodiments of this application, the rotating shaft plate 103 is provided with positioning pin holes 104, and there are two or more positioning pin holes 104. The top of the lifting assembly 200 is provided with positioning holes 201, and there are two or more positioning pin holes 104 and / or positioning holes 201 that correspond to the position of the water tank 600.

[0046] The rotating shaft plate 103 drives the rotating shaft 101 to rotate. When the rotating shaft 101 carries the designated water tank 600 to the testing station, it is best to position the water tank 600 to maintain the stability of the equipment. A convenient way to position the water tank 600 is to provide a positioning hole 201 on the top of the lifting assembly 200 and a positioning pin hole 104 on the rotating shaft plate 103. When positioning is required, the positioning pin is passed through the positioning pin hole 104 and the positioning hole 201 in sequence, which can prevent the rotating shaft plate 103 from continuing to rotate, thereby achieving the positioning of the rotating shaft 101. Specifically, in order to ensure that the water tank 600 is exactly above the rotating shaft 101, the positions of the positioning pin hole 104 and the positioning hole 201 need to match the position of the water tank 600. In some embodiments, the positioning pin hole 104 can be located directly below the corresponding water tank 600, and the positioning hole 201 can be located directly above the testing station, which can easily fix the water tank 600 to be used directly above the testing station.

[0047] In addition, in order to avoid the positioning pin hole 104 and positioning hole 201 from affecting the normal operation of the rotating shaft 101, some embodiments provide small protrusions on the periphery of the rotating shaft plate 103 and open the positioning pin hole 104 on the small protrusions.

[0048] In some embodiments of this application, a water inlet assembly and / or a water replenishment assembly 400 are also included.

[0049] The water inlet assembly includes a main water pipe 301 connected to a water source and branch pipes 302 for connecting the main water pipe 301 and the water tank 600. The number of branch pipes 302 is greater than or equal to the number of water tanks 600.

[0050] The water replenishment component 400 includes a water replenishment tank 401, which is equipped with an inlet pipe 402, an overflow pipe 403, and a water replenishment pipe 404 for replenishing water to the water tank. Both the inlet pipe 402 and the outlet pipe are equipped with valves.

[0051] To facilitate the supply of water to the water tank, an inlet component or a water replenishment component 400 can be installed. In some cases, due to the high frequency of flushing tests, it may be necessary to quickly replenish the water tank. Therefore, it is necessary to provide an inlet water speed. The inlet component and the water replenishment component 400 can be used together.

[0052] In some embodiments, the number of branch pipes 302 of the water inlet assembly is the same as the number of water tanks. To avoid problems with individual branch pipes 302 affecting the testing progress, some embodiments also leave one or two branch pipes 302 unconnected to the water tank as backup water pipes. When a branch pipe 302 fails, the corresponding water tank can be connected to the backup branch pipe 302. For the connection between the branch pipe 302 and the main pipe, a multi-way adapter can be selected. For example, when there are two water tanks, the connection between the branch pipe 302 and the main pipe can be a tee or a four-way adapter; when there are four water tanks, the connection between the branch pipe 302 and the main pipe can be a five-way adapter or a six-way adapter.

[0053] In some embodiments, the water supply tank 401 of the water supply assembly 400 is equipped with a tank cover. Bending mounting sheets can be welded to both sides of the water supply tank 401 for easy installation. Alternatively, in some embodiments, grooves can be provided to prevent damage to the water supply tank 401. A normally open pneumatic angle seat valve can be installed on the water inlet pipe 402 of the water supply tank 401, and a float valve is installed on the side of the water inlet located inside the water supply tank 401. An outlet pneumatic angle seat valve is installed on the water supply pipe 404, and the outlet of the water supply pipe 404, which may include a section of flexible water supply hose, is located directly above the working water tank for easy water replenishment. When the water tank is full, excess water can be transferred out through the overflow pipe 403 to prevent overflow from affecting the testing work below.

[0054] In some embodiments of this application, the main water pipe 301 includes a fixed section connected to a water source, a rotating section that can rotate with the rotating assembly 100, and a slip ring 303 connected between the fixed section and the rotating section.

[0055] The fixed section and the rotating section are connected by a slip ring 303, allowing the rotating section to rotate with the rotating component 100 while the fixed section remains stationary. In a specific design, a transition section can be provided. The external threaded shaft of the slip ring 303 is connected to the rotating shaft 101 through the transition section, rotating together with the outer ring of the slewing bearing 102. The internal threaded outer shell is connected to the fixed section through a pagoda connector. The transition section may also have a circular hole for the branch pipe 302 to pass through and connect to the water tank. In this embodiment, the rotating section and the branch pipe 302 preferably have a certain degree of deformability; for example, a PVC pipe can be selected, and a stainless steel braided corrugated pipe can be provided at the end of the branch pipe 302 for easy connection to the water tank inlet.

[0056] In some embodiments of this application, the lifting assembly 200 includes a lifting cylinder 202, the cylinder barrel of which is fixed to the frame, and a cylinder top plate 203 is fixed to the extension shaft of the lifting cylinder 202. The inner ring of the slewing bearing 102 is fixed to the cylinder top plate 203. The lifting cylinder 202 is used to raise and lower the water tank. Specifically, the cylinder extension shaft is connected to a floating seat fixed to the lower part of the cylinder top plate 203 via a floating joint.

[0057] In some embodiments of this application, a protective cover 204 is provided on the frame surrounding the lifting cylinder 202, and a guide shaft 205 that can move up and down along the protective cover 204 is provided inside the protective cover 204. The top end of the guide shaft 205 is fixed on the cylinder top plate 203, and a linear bearing 206 is provided between the guide shaft 205 and the corresponding protective cover 204.

[0058] Specifically, there can be two or more guide shafts 205. In some embodiments, four guide shafts 205, along with corresponding linear bearings 206 and guide shaft 205 supports, are evenly and symmetrically arranged around the cylinder. Under the combined action of the lifting cylinder 202 and the guide shafts 205, the cylinder top plate 203 can be smoothly raised and lowered, allowing the rotating assembly 100 on it to move smoothly up and down synchronously. The protective cover 204 serves both to guide the guide shafts 205 and to provide protection.

[0059] In other embodiments, the guide shaft 205 may be fixed to the cover 204, and a clearance hole for the guide shaft 205 to pass through is provided on the top plate, but water may enter if the clearance hole is provided on the top plate.

[0060] In some embodiments of this application, a base plate 207 is fixed on the frame, the cylinder of the lifting cylinder 202 is fixed on the base plate 207, a bellows cover 208 that can extend and retract in the vertical direction is provided between the base plate 207 and the cylinder top plate 203, and a waterproof cover 209 is provided on the cylinder top plate 203, the waterproof cover 209 surrounding the outside of the slewing bearing 102.

[0061] A bellows cover 208 is provided between the base plate 207 and the cylinder top plate 203, and a lower edge waterproof cover 209 is installed above the cylinder top plate 203 to reduce the risk of water ingress into components such as the slewing bearing 102 and the linear bearing 206. In some embodiments, the lifting cylinder 202 can be installed below the base plate 207, and hydraulic dampers can be installed on both sides of the cylinder.

[0062] In some embodiments of this application, a water pipe through hole 210 is provided on the cylinder top plate 203, and the fixed section of the main water pipe 301 passes through the bellows cover 208 and the water pipe through hole 210 in sequence and is connected to the rotating section.

[0063] In some embodiments, the base plate 207 may also have a water pipe through hole 210 to facilitate the passage of water pipes.

[0064] In some embodiments of this application, the rack assembly 500 includes a base 501 supporting the lifting assembly 200, a longitudinal support frame 502 fixed on the base 501, and a transverse support frame 503 fixed on the top of the longitudinal support frame 502, and the water tank 401 is disposed on the transverse support frame 503.

[0065] The frame can be designed as a "6"-shaped welded square tube integrated frame. The lower square frame is used to fix the lifting and rotating assembly 100, and the top extension is used to install the water replenishment assembly 400. This arrangement allows the water replenishment tank 401 to be in a higher position, enabling faster water replenishment under gravity. Both the inlet pipe 402 and the overflow pipe 403 can be arranged along the frame columns. In some embodiments, adjustable feet are also provided at the bottom of the frame. In some embodiments, a lighting fixture can be installed on the horizontal support frame 503, positioned directly above the inspection station for better visibility.

[0066] The specific workflow of the multi-station water injection machine in this embodiment is as follows:

[0067] (1) Assume that the working water tank corresponding to the current flushing station is the water tank matched with the toilet product being conveyed by the conveyor line.

[0068] (2) The shaft of lifting cylinder 202 extends; the working water tank is raised;

[0069] (3) The toilet to be tested is transported to the flushing station, and the tooling plate and toilet stop at the station under the action of the line body blocking cylinder.

[0070] (4) The cylinder shaft retracts; the working water tank descends until the sealing gasket of the water tank drain outlet is inserted into the toilet's water inlet;

[0071] (5) The worker at this workstation performs a certain flushing and inspection process (marking lines) on the toilet;

[0072] (6) The worker presses the faucet switch on the working water tank, the valve of the water tank drain outlet opens, the water stored in the water tank is injected into the toilet for flushing, and the test begins.

[0073] (7) The valve is closed; the outlet valve of the top quantitative water supply tank 401 is opened (while the inlet valve is closed) to quickly replenish the working water tank, and the inlet of the working water tank itself is also being filled with water at the same time; while adding water, the worker can perform another flushing and testing procedure on the toilet (add gauze or other materials);

[0074] (8) After a certain period of time, the water replenishment is completed; the outlet pneumatic angle seat valve of the quantitative water replenishment tank 401 is closed, the inlet pneumatic angle seat valve is opened, and the quantitative water replenishment tank 401 is filled with water again.

[0075] (9) After the working water tank is replenished, the worker can press the faucet switch on the working water tank again, the valve of the water tank drain outlet will open, the water stored in the water tank will be injected into the toilet for flushing, and the second test will begin.

[0076] (10) If other rinsing and testing procedures are required, steps 6, 7, and 8 can be repeated;

[0077] (11) If the flushing inspection process has been completed, the cylinder shaft of the lifting cylinder 202 can extend to separate the toilet from the working water tank; the line blocking cylinder rod is retracted, the tooling plate and toilet are released, and when the next product is transported to the flushing station, steps 3 to 10 are repeated.

[0078] (12) When all the same products in this batch have been tested, and the conveyor line needs to test another model of toilet products, the pin of the rotating component 100 needs to be temporarily pulled out, and the water tank corresponding to the model of toilet product to be tested is rotated (for four-position flushing, it can be rotated 90 degrees, 180 degrees or 270 degrees) to the flushing position as the working water tank, and the pin is reinserted.

[0079] (13) When testing the same batch of products, repeat steps 2 to 11; if the product model needs to be changed, proceed to step 12.

[0080] The multi-station water injection machine's lifting and rotating structure in this embodiment allows for rapid replacement of the working water tank during online testing of different toilet models. It includes a quantitative water replenishment tank 401, which significantly improves replenishment speed and testing efficiency compared to relying solely on the working water tank's own inlet. The single-cylinder and guide rod lifting structure ensures stable vertical movement of the working water tank. The use of a high-load-bearing slewing bearing 102 and a four-station symmetrical structure ensures smooth rotation of the rotating assembly 100.

[0081] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-station water injection machine, characterized in that, It includes a water tank, a rotating assembly that drives the water tank to rotate, a lifting assembly that drives the rotating assembly to rise and fall, and a frame assembly for supporting the lifting assembly; The rotating assembly includes a slewing bearing, the inner ring of which is fixed to the lifting assembly and the outer ring of which is fixed to a rotating shaft plate, and the rotating shaft is fixed to the rotating shaft plate; the rotating assembly includes a rotating shaft connected to the lifting assembly, and there are two or more water tanks arranged around the rotating shaft; The lifting assembly includes a lifting cylinder, the cylinder barrel of which is fixed on the frame assembly, a cylinder top plate is fixed on the extension shaft of the lifting cylinder, and the inner ring of the slewing bearing is fixed on the cylinder top plate.

2. The multi-station water injection machine according to claim 1, characterized in that, Each water tank is provided with a corresponding fixing frame. The fixing frame includes a support crossbar, a U-shaped adjusting component, an L-shaped adjusting component, and a placement plate for placing the water tank. The U-shaped adjusting component has a first elongated hole on both sides and a first mounting hole in the middle. The L-shaped adjusting component has a second elongated hole on one side and a second mounting hole on the other side. One end of the support crossbar is fixed to a rotating shaft, and the other end has a third mounting hole that matches the position of the first elongated hole. A first bolt passes through the first elongated hole and the third mounting hole in sequence to fix the U-shaped adjusting component to the support crossbar. A second bolt passes through the second elongated hole and the first mounting hole in sequence to fix the L-shaped adjusting component to the U-shaped adjusting component. A third bolt passes through the placement plate and the second mounting hole in sequence to fix the placement plate to the L-shaped adjusting component.

3. The multi-station water injection machine according to claim 2, characterized in that, The rotating shaft plate is provided with positioning pin holes, and the top of the lifting assembly is provided with positioning holes. There are two or more positioning pin holes and positioning holes, which correspond to the position of the water tank.

4. The multi-station water injection machine according to claim 2, characterized in that, It also includes water inlet components and / or water replenishment components. The water inlet assembly includes a main water pipe connected to a water source and branch pipes for connecting the main water pipe and the water tank, wherein the number of branch pipes is greater than or equal to the number of water tanks. The water replenishment component includes a water replenishment tank, which is equipped with an inlet pipe, an overflow pipe, and a water replenishment pipe for replenishing water to the water tank. Both the inlet pipe and the water replenishment pipe are equipped with valves.

5. The multi-station water injection machine according to claim 4, characterized in that, The main water pipe includes a fixed section connected to the water source, a rotating section that can rotate with the rotating assembly, and a slip ring connecting the fixed section and the rotating section.

6. The multi-station water injection machine according to claim 1, characterized in that, A protective cover is provided on the frame assembly surrounding the lifting cylinder. Inside the protective cover is a guide shaft that can move up and down along the protective cover. The top end of the guide shaft is fixed to the top plate of the cylinder. A linear bearing is provided between the guide shaft and the corresponding protective cover.

7. The multi-station water injection machine according to claim 5, characterized in that, A base plate is fixed on the frame assembly, the cylinder of the lifting cylinder is fixed on the base plate, a bellows cover that can extend and retract in the vertical direction is provided between the base plate and the cylinder top plate, and a waterproof cover is provided on the cylinder top plate, the waterproof cover surrounding the outside of the slewing bearing.

8. The multi-station water injection machine according to claim 7, characterized in that, A water pipe through hole is provided on the top plate of the cylinder, and the fixed section of the main water pipe passes through the bellows cover and the water pipe through hole in sequence and connects to the rotating section.

9. The multi-station water injection machine according to claim 4, characterized in that, The frame assembly includes a base supporting the lifting assembly, a longitudinal support frame fixed on the base, and a transverse support frame fixed on the top of the longitudinal support frame, with the water tank mounted on the transverse support frame.

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