Lubricating grease injection device and control method

Abstract

The lubricating grease injection device comprises an oil supply part, an energy storage assembly, an injection assembly, a control assembly and the like, the oil supply part is started to inject grease into an oil way in front of an electromagnetic valve, and lubricating grease in a piston type oil storage cylinder is accumulated and pushes a piston; after the oil pressure rises to a preset level or rises for a preset time, the electromagnetic valve is controlled to be opened through the control assembly, under the joint driving of the oil supply piece and the energy storage spring, the lubricating grease can be sprayed out of the nozzle in an oil line mode under the action of high oil pressure, manual operation of personnel on the elevator is not needed, and the working efficiency is improved. And no extra large-specification equipment is added on the elevator, so that the defect that the existing grease machine equipment is difficult to realize automatic deployment meeting the requirements on the elevator is overcome, and the technical problem that grease is difficult to add to construction lifting equipment such as a construction elevator and a gantry crane is solved.

Description

Technical Field

[0001] This invention relates to the field of grease spraying equipment technology, and specifically to a grease spraying device and control method. Background Technology

[0002] For high-altitude lifting equipment such as construction elevators or port gantry cranes, adding grease is an important maintenance task in daily operations to reduce friction between mechanical parts and extend the service life of the equipment. However, the special structure and working environment of these lifting equipment lead to problems such as high environmental hazards and complex lubrication requirements. Therefore, manual lubrication is usually performed by skilled workers. This conventional method has problems such as high skill requirements, long training time, and high labor, time, and safety supervision costs. In addition, manual lubrication requires the elevator to stop working, which affects construction efficiency.

[0003] To address the problems associated with manual lubrication, existing technologies attempt to replace manual lubrication of the aforementioned lifting equipment with automated equipment. For example, some have attempted to deploy grease dispensers and pneumatic grease guns on the lifting platform and set the spray positions. However, this approach still has drawbacks: grease dispensers, often sized to fit the lifting platform, tend to have low grease output, failing to achieve the desired "oil line" effect. Pneumatic grease guns typically rely on compressed air, but construction elevators or gantry cranes often lack compressed air sources. Deploying an air source on the platform creates a conflict between the specifications of the air source equipment and the lifting platform's load capacity. Therefore, in practice, ground-based grease guns, in conjunction with personnel, are still used to lubricate the lifting platform after it descends to the ground. Current technologies have not yet adequately solved the complex and difficult technical problems associated with grease application to construction elevators, gantry cranes, and other construction lifting equipment. Summary of the Invention

[0004] To address the technical problems raised in the background section of the prior art, the present invention provides a grease spraying device for spraying grease onto an elevator, comprising:

[0005] An oil supply component is installed on the elevator and has an oil outlet end;

[0006] An energy storage component includes a bracket, a piston-type oil reservoir, and an energy storage spring. One end of the bracket is provided with a fixed part, and the other end is provided with a piston-type oil reservoir. The piston-type oil reservoir is connected to the oil outlet end. The piston-type oil reservoir has a piston that can move toward the fixed part. The energy storage spring is provided between the piston and the fixed part. When the piston moves toward the fixed part, it compresses the energy storage spring.

[0007] The injection assembly includes at least one nozzle and a solenoid valve. The nozzle is located on the elevator and is connected to a piston-type oil reservoir via a pipeline. The solenoid valve is located between the nozzle and the piston-type oil reservoir.

[0008] The control component, connected to the solenoid valve and the oil supply component, is used to control the opening and closing of the oil supply component and the solenoid valve.

[0009] Furthermore, the fixing part is connected to the elevator, one end of the energy storage spring is fixedly connected to the side of the fixing part facing the piston-type oil reservoir, and the bracket also includes:

[0010] The guide rod connects the fixed part and the piston-type oil reservoir;

[0011] The movable part has multiple sliding holes, each corresponding to a guide rod. The guide rod is slidably connected in the sliding hole, allowing the movable part to slide along the guide rod. An energy storage spring is located between the movable part and the fixed part, and the upper end of the piston of the piston-type oil reservoir presses against the other side of the movable part.

[0012] Furthermore, there are multiple guide rods, which are evenly or symmetrically distributed around the energy storage spring. The guide rods include:

[0013] The tension screw is fixedly connected between the fixed part and the piston-type oil reservoir by means of a threaded connection;

[0014] The guide sleeve is fixedly fitted onto the outside of the tension screw, and the outside of the guide sleeve has a smooth surface. The guide sleeve is slidably connected in the sliding hole.

[0015] Furthermore, the energy storage component also includes a contact part, which is fixedly connected to the upper end of the piston and presses against the movable part. The contact area between the contact part and the movable part is greater than the surface area of ​​the upper end of the piston facing the movable part.

[0016] Furthermore, an oil pressure sensing module is installed between the solenoid valve and the piston-type oil reservoir. The oil pressure sensing module is used to detect the oil pressure between the solenoid valve and the piston-type oil reservoir, and the oil pressure sensing module is connected to the control component for signal transmission.

[0017] Furthermore, the spraying assembly includes a mounting bracket, which is mounted on a lifting platform. The nozzle is detachably connected to the mounting bracket, which is used to fix the orientation of the nozzle.

[0018] Furthermore, the nozzles are multiple, and the injection assembly also includes a distributor and multiple branch oil pipes. The distributor is mounted on the mounting bracket and has an inlet and multiple distribution ports. Each distribution port corresponds to a nozzle. The distribution port is connected to its corresponding nozzle through a branch oil pipe, and the inlet is connected to a solenoid valve.

[0019] Furthermore, it also includes a self-cleaning component, which includes a cleaning interface, a sealing element, and a compressed air tank. The piston-type oil reservoir and the solenoid valve are connected by a pipeline. The cleaning interface is located at the pipeline between the piston-type oil reservoir and the solenoid valve. The sealing element can be detachably connected to the cleaning interface. The compressed air tank can be detachably connected to the cleaning interface. A valve is provided at the connection between the compressed air tank and the cleaning interface.

[0020] On the other hand, the present invention provides a method for controlling grease injection, comprising the following steps:

[0021] S1. Check whether the oil passage formed by the connection between the oil supply unit, piston-type oil reservoir, solenoid valve and nozzle is unobstructed.

[0022] S2, enter the working process of the control component. The control component closes the solenoid valve, and the oil pressure sensing module detects the oil pressure in the oil circuit. If it is lower than the first safety threshold, the control component controls the oil supply component to start and inject grease into the oil circuit. The grease gradually fills the piston-type oil reservoir, and the oil pressure in the oil circuit gradually rises.

[0023] S3, the hydraulic pressure sensing module continuously monitors the oil pressure in the oil circuit. When the oil pressure rises to a first predetermined value, the hydraulic pressure sensing module sends a signal to the control component to open the solenoid valve, allowing grease to be sprayed from the nozzle, reducing the oil pressure in the oil circuit. The hydraulic pressure sensing module continues to monitor the oil pressure in the oil circuit. When the oil pressure drops below a second predetermined value, the hydraulic pressure sensing module sends a signal to the control component to close the solenoid valve, causing the oil pressure in the oil circuit to rise again. This process is repeated until the lubrication of the elevator is completed. During this period, if the hydraulic pressure sensing module detects that the oil pressure in the oil circuit is greater than a second safety threshold, the control component shuts off the oil supply component.

[0024] S4, when the lifting platform lubrication work is finished, the control component enters the pressure relief process. The control component shuts off the oil supply and opens the solenoid valve. The remaining pressure in the oil circuit sends the residual grease in the oil circuit out of the nozzle, completing the pressure relief work.

[0025] Furthermore, S1 includes: entering the self-test process of the control component, the oil pressure sensing module detects the oil pressure in the oil circuit, if it is lower than the first safety threshold, the control component controls the oil supply component to continuously start for a predetermined time to inject grease into the oil circuit, and at the same time, the control component repeatedly opens and closes the solenoid valve at a predetermined frequency for a predetermined time to expel air from the oil circuit and determine whether the oil circuit is unobstructed.

[0026] The beneficial effects of this invention are as follows: Before use, the solenoid valve is closed. During use, the oil supply component starts injecting grease into the oil circuit before the solenoid valve. As the grease is injected, the grease accumulates in the piston-type oil reservoir and pushes the piston, causing the piston to overcome the elastic force of the energy storage spring and gradually move towards the fixed part, gradually compressing the energy storage spring. At the same time, the oil pressure in the oil circuit gradually rises. After the oil pressure rises to a predetermined level or after a predetermined time, the solenoid valve is opened by the control component. Under the joint drive of the oil supply component and the energy storage spring, the grease can be sprayed out from the nozzle in the form of an "oil line" under higher oil pressure. The nozzle is located at the riser... The nozzles are pre-positioned on the lifting platform, allowing for automated spraying to the areas requiring lubrication. This eliminates the need for manual operation on the lifting platform and avoids adding larger, additional equipment, such as a large motor or a grease pump, to increase lubrication efficiency. Instead, it utilizes a small, lightweight energy storage spring and a piston-type oil storage cylinder to add an energy storage element at the outlet of the conventional oil supply component. This overcomes the shortcomings of existing grease pumps, which are difficult to automate on lifting platforms, and solves the complex and difficult technical problem of grease application on construction elevators, gantry cranes, and other construction lifting equipment. Attached Figure Description

[0027] Figure 1 This is an overall schematic diagram of one embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of a control component according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the self-test process control procedure according to an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the workflow control process according to one embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the pressure relief process control according to one embodiment of the present invention.

[0032] Figure label:

[0033] 1. Oil supply component; 2. Piston-type oil reservoir; 21. Piston; 211. Contact part; 3. Energy storage spring; 41. Fixing part; 42. Guide rod; 421. Tension screw; 422. Guide sleeve; 43. Moving part; 51. Nozzle; 52. Oil distributor; 53. Branch oil pipe; 6. Solenoid valve; 7. Control components; 71. Main switching power supply; 72. DC voltmeter; 73. Solid state relay; 74. Auxiliary switching power supply; 75. PLC controller; 76. Oil pump working voltmeter; 77. System control push button switch; 78. Oil circuit cleaning push button switch; 8. Oil pressure sensing module; 91. Cleaning interface; 92. Compressed air tank. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0035] On one hand, the present invention provides a grease spraying device for spraying grease onto an elevator, comprising: a grease supply component 1, an energy storage component, a spraying component, and a control component 7. The grease supply component 1 has an oil outlet end and is mounted on the elevator. The energy storage component includes a bracket, a piston-type oil storage cylinder 2, and an energy storage spring 3. One end of the bracket is provided with a fixing part 41, and the other end is provided with the piston-type oil storage cylinder 2. The piston-type oil storage cylinder 2 is connected to the oil outlet end via a pipeline. The piston-type oil storage cylinder 2 has a piston 21 capable of moving towards the fixing part 41. The energy storage spring 3 is disposed between the piston 21 and the fixing part 41, and compresses the energy storage spring 3 when the piston 21 moves towards the fixing part 41. The spraying component includes at least one nozzle 51 and a solenoid valve 6. The nozzle 51 is mounted on the elevator and connected to the piston-type oil storage cylinder 2 via a pipeline. The solenoid valve 6 is disposed between the nozzle 51 and the piston-type oil storage cylinder 2. The control component 7 is signal-connected to the solenoid valve 6 and the grease supply component 1, and is used to control the opening and closing of the grease supply component 1 and the solenoid valve 6.

[0036] Specifically, refer to Figure 1 Before use, solenoid valve 6 is closed. During use, the oil supply component 1 starts injecting grease into the oil circuit before solenoid valve 6. As the grease is injected, due to the connection between the piston-type oil reservoir 2 and the oil supply component 1, the grease gradually enters the piston-type oil reservoir 2. As the grease accumulates in the piston-type oil reservoir 2 and pushes the piston 21, the piston 21 overcomes the elastic force of the energy storage spring 3 and gradually moves towards the fixed part, gradually compressing the energy storage spring 3. Simultaneously, the oil pressure in the oil circuit gradually rises. Once the oil pressure reaches a predetermined level or after a predetermined time, the solenoid valve 6 is opened by the control component. Under the combined drive of the oil supply component and the energy storage spring 3, the grease can be released at higher oil pressure in a "oil line" manner. The grease is sprayed from nozzle 51 in the form of a "spray". Nozzle 51 is located on the elevator and is oriented in a pre-deployed manner, so it can automatically spray the grease onto the area of ​​the elevator that needs lubrication. No manual operation is required on the elevator, and no additional large-scale equipment, such as a large motor or a grease machine, is added to the elevator to increase the grease output efficiency. Instead, a small and lightweight energy storage spring 3 and a piston-type oil storage cylinder 2 are used to add an energy storage link at the oil outlet of the conventional oil supply component. This overcomes the shortcomings of existing grease machine equipment that are difficult to automate on elevators, and solves the technical problem of the complexity and difficulty of grease application to construction elevators, gantry cranes and other construction lifting equipment.

[0037] In various embodiments, the necessary fluid flow between the oil supply component 1, the energy storage component, and the injection component is achieved using pipelines from various existing technologies. Furthermore, those skilled in the art can install components such as tees using conventional methods. In this embodiment, flexible pipelines are preferably used to connect the various components. The distribution of pipelines and tees is referenced... Figure 1 .

[0038] In this embodiment, the inner diameter of the pipeline connecting the oil supply component 1, the energy storage component, and the injection component is 6 mm, and the cross-sectional area is 28.26 square millimeters. The nozzle diameter is 1 mm, the cross-sectional area is 0.785 square millimeters, and the cross-sectional area of ​​nozzle 51 is 6.28 square millimeters. The cross-sectional area ratio is 4.5, making the pressure in nozzle 51 4.5 times the pressure in the oil circuit, thereby promoting the formation of the injection effect. In other embodiments, those skilled in the art can use the same principle and thinking to set the specific inner diameter values ​​of the pipeline and nozzle 51 according to different needs to promote the formation of the injection effect.

[0039] In this embodiment, the nozzle 51 is disposed near the operating friction part of the elevator in a fixed or detachable manner so that it can spray grease to the correct position.

[0040] In various embodiments, the control component 7 can control the solenoid valve 6 and the oil supply component 1 in various ways to achieve automated / semi-automated operation, thereby avoiding the need for personnel to climb onto the elevator to operate it. For example, the control component 7 can be operated remotely. At the same time, a pressure sensor or timer is set in the oil circuit before the solenoid valve 6. When the oil pressure level or the pressurization time reaches a predetermined limit value, a signal is automatically or manually sent to the control component 7 to ensure that the solenoid valve 6 is opened to release the sprayed grease after the oil pressure increases to a certain level.

[0041] In this embodiment, the oil supply component 1, energy storage component, injection component and control component 7 are all installed on the elevator, and can rise and fall together with the lifting platform and other lifting motion structures. The power is directly supplied by the elevator itself. Among them, the oil supply component 1 adopts the brushless motor grease gun of the prior art, which has little impact on the load of the elevator and can lubricate the elevator without affecting the operation of the elevator.

[0042] In this embodiment, the control component 7 is connected to the fuel supply unit 1 and the solenoid valve 6 via a wired signal connection. In other embodiments, the control component 7 may also be connected to the fuel supply unit 1 and the solenoid valve 6 via a wireless signal connection. In such embodiments, the control component 7 may be deployed on the ground.

[0043] In various embodiments, those skilled in the art may also employ any other specific methods that are readily conceived to deploy the fuel supply unit 1, the energy storage unit, the injection unit, and the control unit 7.

[0044] In this embodiment, the oil supply component includes a grease tank and an electric grease dispenser. The grease tank is installed on the lifting platform of the elevator. In this embodiment, the electric grease dispenser is a sunken type and is installed inside the grease tank. The electric grease dispenser has a power cord that is connected to the elevator circuit for power supply and an oil outlet pipe that extends out of the grease tank. Therefore, in this embodiment, the oil outlet end of the oil supply component 1 is the interface of the oil outlet pipe.

[0045] In other embodiments, other suitable forms of oil supply components from conventional technologies may also be selected.

[0046] In various embodiments, the piston-type oil reservoir 2 is prior art and can be made from various existing conventional devices. For example, in this embodiment, the piston-type oil reservoir 2 is a single-push-rod piston hydraulic cylinder, which is a prior art technique. In other embodiments, other suitable or adaptively modified prior art techniques can also be used as the piston-type oil reservoir 2.

[0047] Furthermore, since the energy storage spring 3 stores a large amount of elastic potential energy during use, it is necessary to consider improving the stability of the energy storage component to ensure the stability of the energy storage / release process of the energy storage spring 3. In this embodiment, the fixed part 41 is connected to the elevator, and one end of the energy storage spring 3 is fixedly connected to the side of the fixed part 41 facing the piston-type oil cylinder 2. The bracket also includes: a guide rod 42 and a movable part 43, wherein the guide rod 42 is connected between the fixed part 41 and the piston-type oil cylinder 2; the movable part 43 has multiple sliding holes, one sliding hole corresponds to one guide rod 42, the guide rod 42 is slidably connected in the sliding hole, and the movable part 43 can slide along the guide rod 42. The energy storage spring 3 is disposed between the movable part 43 and the fixed part 41, and the upper end of the piston 21 of the piston-type oil cylinder 2 presses against the other side of the movable part 43.

[0048] With the above configuration, the end of the piston 21 presses against the energy storage spring 3 through the movable part 43. Since the movable part 43 ensures the uniqueness of the motion dimension through the sliding connection with the guide rod 42, the interaction process between the piston 21 and the energy storage spring 3 is more stable. It will not cause the piston 21 and the energy storage spring 3 to deviate from each other due to external force, deformation, misalignment or other problems, thus preventing damage to the piston-type oil reservoir 2.

[0049] In this embodiment, the fixed part 41 and the movable part 43 are made of plate components and are parallel to each other. One end of the energy storage spring 3 is fixedly connected to the center of the side surface of the fixed part 41 facing the movable part 43. A spring positioning pin is fixedly provided on the side of the fixed part 41 facing the movable part 43. The spring positioning pin is sleeved in the energy storage spring 3 to prevent the energy storage spring 3 from shifting. The other end of the energy storage spring 3 presses against the center of the side surface of the movable part 43 facing the fixed part 41. The other side of the movable part abuts against the piston 21.

[0050] In this embodiment, a plate component is used as a fixing part 41 and is set on the guide rod 42 by a threaded connection. The plate component is fixed on the guide rod 42 with a locking nut, so that the position of the plate component 41 on the guide rod 42 can be adjusted and fixed, thereby achieving the technical effect of adjusting the preload of the energy storage spring 3.

[0051] In other embodiments, the fixed part 41 and the movable part 43 may also be made of other forms or components, such as blocks, mesh components composed of multiple rods, or cover-like bodies with limiting edges, etc. Their strength must be able to withstand the pressure of the piston and the energy storage spring through structural mechanics design and material mechanics analysis. In various different embodiments, the energy storage spring 3, piston 21, fixed part 41 and movable part 43 must be collinear at their centers.

[0052] Furthermore, due to the high viscosity and strong adhesion of the grease, a large pressure needs to be formed in the piston-type oil reservoir 2 to achieve the effect of the oil spray line. For the energy storage component as a whole, a large tension will be generated between the bracket fixing part 41 and the two ends of the piston-type oil reservoir 2. Therefore, there are multiple guide rods 42, which are evenly or symmetrically distributed around the energy storage spring 3. The guide rods 42 include tension screws 421, which are fixedly connected between the fixing part 41 and the piston-type oil reservoir 2 by means of threaded connection.

[0053] The tension screw 421 is connected to the fixed part 41 and the piston-type oil reservoir 2 by means of threads or lock nuts. The threaded connection method produces a stable and easy-to-adjust connection at both ends. The arrangement of multiple screws evenly or symmetrically distributed around the energy storage spring 3 can make the tension evenly distributed. The tension load is shared by multiple tension screws 421, so that the bracket as a whole can well bear the tension between the two ends where the fixed part 41 and the piston-type oil reservoir 2 are located.

[0054] In this embodiment, the piston-type oil reservoir 2 has four connecting bolts facing the fixing part 41, and four screws are provided on the fixing part 41 as the tension screws 421. Each screw corresponds to a connecting bolt and is connected by a long nut. The four tension screws are evenly arranged around the center of the fixing part 421 and the piston, so that the tension screws 421 are evenly and symmetrically distributed around the energy storage spring 3.

[0055] In other embodiments, the tension screw 421, the fixing part 41, and the piston-type oil reservoir 2 may also adopt other common connection forms that are known to those skilled in the art to maintain the stability of the connection and the uniformity of the force. In other embodiments, other numbers of tension screws 421 may also be used according to various needs, and the tension screws 421 may be evenly or symmetrically distributed around the energy storage spring 3.

[0056] However, with the tension screw 421 in place, the threaded outer surface of the tension screw 421 makes it difficult to achieve a smooth sliding connection between the movable part 43 and the guide rod 42. Therefore, specifically, the guide rod 42 also includes a guide sleeve 422, which is fixedly fitted onto the outside of the tension screw 421. The outer surface of the guide sleeve 422 is smooth, and the guide sleeve 422 is slidably connected in the sliding hole. This solves the technical problem that the threaded outer surface of the tension screw 421 makes it difficult to achieve a smooth sliding connection between the movable part 43 and the guide rod 42.

[0057] In this embodiment, a smooth stainless steel round tube is used as the guide sleeve, which is fitted onto the outside of the tension screw 421. This ensures smooth sliding between the moving part 43 and the guide sleeve 422 while maintaining surface hardness and wear / corrosion resistance. In other embodiments, other suitable materials and smooth-surfaced tubular structures can also be used as the guide sleeve 422.

[0058] In some embodiments, since a piston-type oil reservoir with an upper oil inlet is used in the prior art, in order to prevent external debris and dirt from entering the piston-type oil reservoir from the upper oil inlet and causing damage to the piston or cylinder, it is necessary to install a muffler plug or similar sealing structure at the upper oil inlet in such embodiments to achieve the technical effect of sealing the upper oil inlet.

[0059] Furthermore, based on the large oil pressure inside the piston-type oil reservoir 2, the pressure exerted by the piston 21 on the movable part 43 is relatively large. In order to increase the pressure action area of ​​the piston 21 on the movable part 43, thereby reducing the pressure and improving the uniformity of the pressure action, the energy storage component also includes a contact part 211. The contact part 211 is fixedly connected to the upper end of the piston 21 and presses against the movable part 43. The contact area between the contact part 211 and the movable part 43 is larger than the surface area of ​​the upper end of the piston 21 facing the movable part 43.

[0060] In this embodiment, considering that the piston-type oil reservoir 2 is selected from the prior art, the end of its piston 21 is suitable to be connected to the contact part 211 by a threaded connection, and the threaded connection is suitable for transmitting large pressure at the end of the rod-shaped object. Therefore, in this embodiment, the contact part 211 is specifically implemented as a force-transmitting flange nut sleeved on the end of the piston 21.

[0061] In other embodiments, other conventional technical means may be used to fix the contact part 211 to the end of the piston 21, such as a block welded to the end of the piston 21, or a pin-like structure inserted into the side of the end of the piston 21, or a cover-like structure fixedly sleeved on the end of the piston 21, or other contact part 211 structures and connection methods that can be easily conceived by those skilled in the art.

[0062] Furthermore, since the nozzle 51 moves up and down together with the elevator, in order to maintain the orientation of the nozzle 51 on the elevator and ensure that the grease can be accurately sprayed to the designated position during unmanned automated oil spraying, the spraying assembly specifically includes a mounting bracket, which is set on the lifting platform. The nozzle 51 is detachably connected to the mounting bracket, and the mounting bracket is used to fix the orientation of the nozzle 51.

[0063] Furthermore, there are multiple nozzles 51, and the injection assembly also includes an oil distributor 52 and multiple branch oil pipes 53. The oil distributor 52 is mounted on the mounting bracket and has an inlet and multiple oil outlets. Each oil outlet corresponds to a nozzle 51. The oil outlet is connected to its corresponding nozzle 51 through the branch oil pipes 53, and the inlet is connected to the solenoid valve 6.

[0064] In this embodiment, the two guide columns and one transmission rack of the elevator need to be lubricated. Therefore, two first U-shaped plates are provided on the mounting frame. The inner side of the U-shaped plate can correspond to the three sides of the guide column that cooperate with the guide wheel. Each U-shaped plate is provided with three nozzles 51 for spraying oil to lubricate the three sides. In addition, the mounting frame also includes a second U-shaped plate corresponding to the two sides of the transmission rack. The second U-shaped plate is provided with two nozzles 51 for spraying oil to lubricate the two sides of the transmission rack.

[0065] Furthermore, considering that the grease spraying equipment must undergo a regular cleaning process, and since this embodiment uses a new set of working oil circuits, it is necessary to add appropriate cleaning components to clean the oil circuits. Therefore, in particular, a self-cleaning component is also included. The self-cleaning component includes a cleaning interface 91, a sealing component, and a compressed air tank 92. The piston-type oil reservoir 2 and the solenoid valve 6 are connected by a pipeline. The cleaning interface 91 is located at the pipeline between the piston-type oil reservoir 2 and the solenoid valve 6. The sealing component can be detachably connected to the cleaning interface 91. The compressed air tank 92 can be detachably connected to the cleaning interface 91. A valve is provided at the connection between the compressed air tank 92 and the cleaning interface 91. During the lubrication process, the sealing component is connected to the cleaning interface 91 to maintain the airtightness of the oil circuit. When cleaning, the sealing component is removed and replaced with a compressed air tank 92 connected to the cleaning interface. The control component 7 is used to open the solenoid valve, and the compressed air inside the compressed air tank 92 is used to flush the residual grease in the oil circuit. The oil circuit design in this embodiment achieves a simple and convenient cleaning technology effect.

[0066] In this embodiment, a lightweight 5L gas tank is used as the compressed gas tank, and the control component 7 uses an electromagnetic pulse train to control the opening and closing of the solenoid valve 6. In other embodiments, other common and suitable compressed gas sources can be used as the compressed gas tank, and other control methods that are readily apparent to those skilled in the art can also be employed.

[0067] Furthermore, in order to realize the automated control scheme of the solenoid valve by the control component 7, an oil pressure sensing module 8 is provided between the solenoid valve 6 and the piston-type oil reservoir. The oil pressure sensing module 8 is used to detect the oil pressure between the solenoid valve 6 and the piston-type oil reservoir, and the oil pressure sensing module 8 is connected to the control component 7 for signal transmission.

[0068] In this embodiment, the hydraulic pressure sensing module 8 includes a transmitter that converts the pressure signal into an electrical signal and sends it to the control component 7.

[0069] On the other hand, refer to 4 and Figure 5 This invention provides a method for controlling grease injection, comprising the following steps:

[0070] S1, check whether the oil circuit formed by the connection between the oil supply component 1, the piston-type oil reservoir 2, the solenoid valve 6 and the nozzle 51 is unobstructed.

[0071] S2, enter the working process of control component 7. Control component 7 closes the solenoid valve. Oil pressure sensing module 8 detects the oil pressure in the oil circuit. If it is lower than the first safety threshold, control component 7 controls oil supply component 1 to start and inject grease into the oil circuit. The grease gradually fills the piston-type oil reservoir 2, and the oil pressure in the oil circuit gradually rises.

[0072] S3, the hydraulic pressure sensing module 8 continuously monitors the oil pressure in the oil circuit. When the oil pressure rises to a first predetermined value, the hydraulic pressure sensing module 8 sends a signal to the control component 7 to open the solenoid valve 6, causing the grease to be sprayed out from the nozzle 51, and the oil pressure in the oil circuit decreases. The hydraulic pressure sensing module 8 continues to monitor the oil pressure in the oil circuit. When the oil pressure drops below a second predetermined value, the hydraulic pressure sensing module 8 sends a signal to the control component 7 to close the solenoid valve 6, causing the oil pressure in the oil circuit to rise again. This process is repeated until the lubrication of the elevator is completed. During this period, if the hydraulic pressure sensing module 8 detects that the oil pressure in the oil circuit is greater than the second safety threshold, the control component 7 shuts off the oil supply component 1.

[0073] S4, when the lubrication of the elevator is finished, the pressure relief process of the control component 7 is initiated. The control component 7 closes the oil supply component 1 and opens the solenoid valve 6. The remaining pressure in the oil circuit sends the residual grease in the oil circuit out of the nozzle 51, thus completing the pressure relief work.

[0074] In this embodiment, S1 can preferably be implemented using the control component 7 and the oil pressure sensor 8, as shown in the reference. Figure 3 Specifically, S1 includes: entering the self-test process of the control component 7, the oil pressure sensing module 8 detects the oil pressure in the oil circuit, if it is lower than the first safety threshold, the control component 7 controls the oil supply component 1 to start continuously for a predetermined time to inject grease into the oil circuit, and at the same time, the control component 7 repeatedly opens and closes the solenoid valve at a predetermined frequency for a predetermined time to expel air from the oil circuit and determine whether the oil circuit is unobstructed.

[0075] In one embodiment, control component 7 employs existing technology to receive basic signals and perform opening and closing control on the solenoid valve and oil supply component. An embodiment employing existing technology is described herein; please refer to... Figure 2 The control component 7 includes a main switching power supply 71, a DC voltmeter 72, a solid-state relay 73, an auxiliary switching power supply 74, and a PLC controller 75. For specific connection and signal transmission relationships, please refer to [reference needed]. Figure 2 This is to achieve the aforementioned control method.

[0076] In various embodiments, the control component 7 is equipped with at least an oil pump working voltage meter 76 and a system control button switch 77 for starting the control process of the control component 7. In other embodiments, the control component 7 is also equipped with an oil circuit cleaning button switch 78, which controls the opening and closing of the solenoid valve 6 by means of an electromagnetic pulse train when using gas to clean the pipeline.

[0077] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A grease spraying device for spraying grease onto an elevator, characterized in that, include: Oil supply component (1) is installed on the elevator and has an oil outlet end; The energy storage component includes a bracket, a piston-type oil storage cylinder (2), and an energy storage spring (3). One end of the bracket is provided with a fixing part (41), and the other end is provided with a piston-type oil storage cylinder (2). The piston-type oil storage cylinder (2) is connected to the oil outlet end. The piston-type oil storage cylinder (2) has a piston (21) that can move toward the fixing part (41). The energy storage spring (3) is disposed between the piston (21) and the fixing part (41). When the piston (21) moves toward the fixing part (41), it squeezes the energy storage spring (3). The injection assembly includes at least one nozzle (51) and a solenoid valve (6). The nozzle (51) is located on the elevator and is connected to the piston-type oil reservoir (2) via a pipeline. The solenoid valve (6) is located between the nozzle (51) and the piston-type oil reservoir (2). The control component (7) is signal-connected to the solenoid valve (6) and the oil supply component (1) and is used to control the opening and closing of the oil supply component (1) and the solenoid valve (6).

2. The grease injection device according to claim 1, characterized in that, The fixing part (41) is connected to the elevator, one end of the energy storage spring (3) is fixedly connected to the side of the fixing part (41) facing the piston-type oil reservoir (2), and the bracket also includes: The guide rod (42) is connected between the fixed part (41) and the piston-type oil reservoir (2); The movable part (43) has multiple sliding holes, one sliding hole corresponds to one guide rod (42), the guide rod (42) is slidably connected in the sliding hole, the movable part (43) can slide along the guide rod (42), the energy storage spring (3) is disposed between the movable part (43) and the fixed part (41), and the upper end of the piston (21) of the piston-type oil storage cylinder (2) presses against the other side of the movable part (43).

3. The grease injection device according to claim 2, characterized in that, There are multiple guide rods (42), which are evenly or symmetrically distributed around the energy storage spring (3). The guide rods (42) include: The tension screw (421) is fixedly connected between the fixed part (41) and the piston-type oil reservoir (2) by means of a threaded connection; The guide sleeve (422) is fixedly fitted on the outside of the tension screw, and the outside of the guide sleeve (422) is a smooth surface. The guide sleeve (422) is slidably connected in the sliding hole.

4. The grease injection device according to claim 2, characterized in that, The energy storage component also includes a contact part (211), which is fixedly connected to the upper end of the piston (21) and presses against the movable part (43). The contact area between the contact part (211) and the movable part (43) is greater than the surface area of ​​the upper end of the piston (21) facing the movable part (43).

5. The grease injection device according to claim 1, characterized in that, An oil pressure sensing module (8) is provided between the solenoid valve (6) and the piston-type oil reservoir. The oil pressure sensing module (8) is used to detect the oil pressure between the solenoid valve (6) and the piston-type oil reservoir. The oil pressure sensing module (8) is connected to the control component (7) via signal.

6. The grease injection device according to claim 1, characterized in that, The spraying assembly includes a mounting bracket, which is disposed on a lifting platform. The nozzle (51) is detachably connected to the mounting bracket, which is used to fix the orientation of the nozzle (51).

7. The grease injection device according to claim 6, characterized in that, There are multiple nozzles (51), and the injection assembly also includes an oil distributor (52) and multiple branch oil pipes (53). The oil distributor (52) is mounted on the mounting bracket. The oil distributor (52) has an inlet and multiple oil outlets. Each oil outlet corresponds to a nozzle (51). The oil outlet is connected to its corresponding nozzle (51) through the branch oil pipes (53). The inlet is connected to the solenoid valve (6).

8. The grease injection device according to claim 1, characterized in that, It also includes a self-cleaning component, which includes a cleaning interface (91), a sealing element, and a compressed air tank (92). The piston-type oil reservoir (2) and the solenoid valve (6) are connected by a pipeline. The cleaning interface (91) is located at the pipeline between the piston-type oil reservoir (2) and the solenoid valve (6). The sealing element can be detachably connected to the cleaning interface (91). The compressed air tank (92) can be detachably connected to the cleaning interface (91). A valve is provided at the connection between the compressed air tank (92) and the cleaning interface (91).

9. A method for controlling grease injection, applicable to claim 5 above, characterized in that, Includes the following steps: S1, check whether the oil circuit formed by the connection between the oil supply component (1), piston-type oil reservoir (2), solenoid valve (6) and nozzle (51) is unobstructed; S2, enter the working process of control component (7), control component (7) closes the solenoid valve, oil pressure sensing module (8) detects the oil pressure in the oil circuit. If it is lower than the first safety threshold, control component (7) controls the oil supply component (1) to start, injecting grease into the oil circuit. The grease gradually fills the piston-type oil reservoir (2), and the oil pressure in the oil circuit gradually rises. S3, the oil pressure sensing module (8) continuously detects the oil pressure in the oil circuit. When the oil pressure rises to the first predetermined value, the oil pressure sensing module (8) sends a signal to the control component (7) so that the control component (7) opens the solenoid valve (6) so that the grease is sprayed out from the nozzle (51) and the oil pressure in the oil circuit decreases. The oil pressure sensing module (8) continues to detect the oil pressure in the oil circuit. When the oil pressure drops below the second predetermined value, the oil pressure sensing module (8) sends a signal to the control component (7) so that the control component (7) closes the solenoid valve (6) so that the oil pressure in the oil circuit rises again. This process is repeated until the lubrication of the elevator is completed. During this period, if the oil pressure sensing module (8) detects that the oil pressure in the oil circuit is greater than the second safety threshold, the control component (7) shuts off the oil supply component (1). S4. When the lubrication work of the elevator is finished, the pressure relief process of the control component (7) is entered. The control component (7) closes the oil supply component (1) and opens the solenoid valve (6). The remaining pressure in the oil circuit sends the residual grease in the oil circuit out of the nozzle (51) to complete the pressure relief work.

10. The grease injection control method according to claim 9, characterized in that, S1 includes: Entering the self-test process of the control component (7), the oil pressure sensing module (8) detects the oil pressure in the oil circuit. If it is lower than the first safety threshold, the control component (7) controls the oil supply component (1) to start continuously for a predetermined time to inject grease into the oil circuit. At the same time, the control component (7) repeatedly opens and closes the solenoid valve at a predetermined frequency for a predetermined time to expel air from the oil circuit and determine whether the oil circuit is unobstructed.

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