Heavy-load hydraulic transmission lifting mechanism for hydraulic end fracturing pump workpiece

Abstract

The utility model discloses a heavy-load hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece, which adopts two sets of oil cylinder transmission devices which are symmetrically arranged left and right, and the oil cylinder transmission devices are connected with a PLC (Programmable Logic Controller) control system; the oil cylinder transmission device comprises an oil cylinder, a pulley block, a riding wheel and a balance weight. The pulley block comprises a driving pulley and a driven pulley which are in front-back coaxial transmission; a piston rod of the oil cylinder is vertically downwards installed, a riding wheel is installed at the tail end of the piston rod, and the oil cylinder transmission device is connected with the lifting table through a driving chain plate and a driven chain plate. One end of the driving chain plate is fixed and is connected with the lifting platform after bypassing the riding wheel and the driving pulley in sequence; one end of the driven chain plate is connected with the lifting platform and connected with the balance weight after bypassing the driven pulley, an inclined plate or an inclined table is arranged on the side face of the lifting platform, the lower portion of the inclined plate or the inclined table is wider than the upper portion, and one end of the driving chain plate and one end of the driven chain plate are fixedly installed on the inclined plate or the inclined table. According to the utility model, the transfer and quenching of the hydraulic end fracturing pump workpiece meet the requirements of stability and flexible control.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic end fracturing pump workpiece technology production equipment, in particular to a hydraulic end fracturing pump workpiece heavy-load hydraulic transmission lifting mechanism. Background Art

[0002] The transportation of large hydraulic end fracturing pump components is a crucial step in the current domestic forging industry. These components are not only massive but also often require extremely high precision and stability. During transportation, even the slightest collision or vibration can damage their internal structure, impacting their performance and service life. Therefore, strict technical measures and strategies are required for the transportation of large hydraulic end fracturing pump components.

[0003] However, forging plants currently rely on motor-driven lifts to transport these large and heavy hydraulic end fracturing pump components. This traditional method is affected by the motor's startup time during the transmission process. This means that when the hydraulic end fracturing pump component needs to be moved quickly, the motor may not respond immediately, significantly reducing transportation efficiency. This not only affects production schedules but also potentially affects the quality of the hydraulic end fracturing pump component.

[0004] Large hydraulic end fracturing pump components are large in both tonnage and volume. Because they often feature numerous holes and cavities, they require frequent up-and-down movement in the quenching tank to achieve uniform cooling during quenching. This places high demands on the lifting platforms used for transport and quenching. Traditional lifting platforms often lack the ability to flexibly adjust lifting force and speed. Due to the varying weights and sizes of large hydraulic end fracturing pump components, the requirements for lifting force and speed also vary. Therefore, there is an urgent need to develop a new, large-tonnage lifting platform device with adjustable lifting force and speed. Utility Model Content

[0005] The purpose of the utility model is to provide a heavy-duty hydraulic transmission lifting mechanism suitable for a hydraulic end fracturing pump workpiece, so that the transportation and quenching of the hydraulic end fracturing pump workpiece meet the requirements of stable and flexible control.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A heavy-duty hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece, which uses two sets of oil cylinder transmission devices arranged symmetrically on the left and right, and the oil cylinder transmission devices are connected to a PLC control system;

[0008] The oil cylinder transmission device includes an oil cylinder, a pulley block, a supporting roller and a counterweight; the pulley block includes a driving pulley and a passive pulley for front and rear coaxial transmission; the oil cylinder is installed vertically downward with the piston rod of the oil cylinder, and a supporting roller is installed at the end of the piston rod. The oil cylinder transmission device is connected to the lifting platform through the driving chain plate and the passive chain plate;

[0009] One end of the active chain plate is fixed, and is connected to the lifting platform after passing through the supporting wheel and the active pulley in sequence; one end of the passive chain plate is connected to the lifting platform, and is connected to the counterweight after passing through the passive pulley;

[0010] The side of the lifting platform is provided with an inclined plate or an inclined platform, the lower part of the inclined plate or the inclined platform is wider than the upper part, and one end of the active chain plate and the passive chain plate is fixedly installed on the inclined plate or the inclined platform.

[0011] To optimize the above technical solutions, specific measures taken also include:

[0012] A wall is provided on the side of the lifting platform, and the active pulley and the passive pulley are arranged on the top of the wall on the side of the lifting platform.

[0013] The outer side of the wall on the side of the lifting platform is the cylinder working area, and the cylinder, supporting wheel and counterweight are all arranged in the cylinder working area.

[0014] One end of the active chain plate is installed at the middle position of the side wall of the oil cylinder working area away from the lifting platform.

[0015] Furthermore, the active pulleys are grouped into two, namely a first active pulley and a second active pulley; correspondingly, the passive pulleys are grouped into two, namely a first passive pulley and a second passive pulley.

[0016] The oil cylinder transmission device arranged on the left side is connected to the left front and left rear of the lifting platform through the left active chain plate and the left passive chain plate respectively; the right active chain plate and the right passive chain plate of the oil cylinder transmission device arranged on the right side are connected to the right front and right rear of the lifting platform respectively.

[0017] Under the synchronous control of the left and right sets of cylinder transmission devices by the PLC control system, the left and right sides of the lifting platform are the same height.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This new hydraulic end fracturing pump workpiece heavy-duty hydraulic transmission lifting mechanism is suitable for use on lifting platforms for large-tonnage hydraulic end fracturing pump workpieces, such as the 15-5PH. It utilizes a hydraulic cylinder transmission mechanism, ensuring stable operation unaffected by motor startup time. Driven by rollers, pulleys, and chain plates, it reduces hydraulic transmission length. A symmetrical arrangement of active and passive pulleys and counterweights ensures a level loading platform. The hydraulic cylinder transmission mechanism is connected to a PLC control system, enabling adjustable lifting force and speed.

[0020] The heavy-load hydraulic transmission lifting mechanism of the hydraulic end fracturing pump workpiece of the utility model has the arbitrary speed control function of acceleration, constant speed and deceleration under the control of the PLC control system, which can meet the speed requirements of the large hydraulic end fracturing pump workpiece products to immediately rise and fall, so that the large-tonnage hydraulic end fracturing pump workpiece products can be frequently moved up and down in the quenching pool for water quenching, remove the steam film, ensure uniform cooling inside the hole, and prevent water quenching cracking.

[0021] When the lifting platform of the utility model carries a large-tonnage hydraulic end fracturing pump workpiece product and moves up and down, the inclined plate or inclined platform arranged on the side is connected to the surrounding chain plates to balance the force on the lifting platform, making the lifting platform carrying the large-tonnage workpiece product more stable, and avoiding the safety hazard of large-tonnage and large-volume workpiece products touching the chain plates around the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 : Schematic diagram of the structure of the heavy-load hydraulic transmission lifting mechanism of the hydraulic end fracturing pump workpiece of the present invention.

[0023] Figure 2 : Schematic diagram of the partial structure of the heavy-load hydraulic transmission lifting mechanism of the hydraulic end fracturing pump workpiece of the present invention.

[0024] Figure 3 : A schematic diagram of the front structure of a 15-5PH hydraulic end fracturing pump workpiece in an embodiment.

[0025] Figure 4 : Schematic diagram of the rear structure of the 15-5PH hydraulic end fracturing pump workpiece in the embodiment.

[0026] Figure 5 : A schematic side view of the structure of a 15-5PH hydraulic end fracturing pump workpiece in an embodiment.

[0027] In the figure: 1-supporting roller, 2-piston rod, 3-driving chain plate, 4-first driving pulley, 5-second driving pulley, 6-oil cylinder, 7-lifting platform, 8-first passive pulley, 9-second passive pulley, 10-passive chain plate, 11-counterweight. DETAILED DESCRIPTION

[0028] The above contents of the present invention are further described in detail below in the form of embodiments, but this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments. All technologies implemented based on the above contents of the present invention belong to the scope of the present invention.

[0029] In the description of this utility model, it is also necessary to note that the orientations or positional relationships described herein are based on the relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] The large hydraulic end fracturing pump workpiece subjected to lifting and water quenching treatment in the present invention, such as the 15-5PH hydraulic end fracturing pump workpiece, has a large tonnage and volume, and has a large number of holes and cavity arrangement structures, such as Figure 3-5 shown.

[0031] The utility model provides a heavy-duty hydraulic transmission lifting mechanism for large hydraulic end fracturing pump workpieces, such as Figure 1 As shown, two sets of oil cylinder transmission devices are arranged symmetrically on the left and right, and the oil cylinder transmission devices are connected to the PLC control system;

[0032] The oil cylinder transmission device includes an oil cylinder 6, a pulley block, a supporting roller 1, and a counterweight 11; the pulley block includes a driving pulley and a passive pulley with a coaxial transmission at the front and rear ends; the piston rod 2 of the oil cylinder 6 is set vertically downward, and the supporting roller 1 is installed at the end of the piston rod 2. The oil cylinder transmission device is connected to the lifting platform 7 through the driving chain plate 3 and the passive chain plate 10;

[0033] One end of the active chain plate 3 is fixed, and it passes through the supporting wheel 1 and the active pulley in sequence and is connected to the lifting platform 7; one end of the passive chain plate 10 is connected to the lifting platform 7, and it passes through the passive pulley and is connected to the counterweight 11. Figure 2 shown.

[0034] An inclined plate or inclined platform is provided on the side of the lifting platform 7. The lower part of the inclined plate or inclined platform is wider than the upper part. One end of the active chain plate 3 and the passive chain plate 10 is fixedly mounted on the inclined plate or inclined platform.

[0035] A wall is provided on the side of the lifting platform 7 , and the active pulley and the passive pulley are arranged on the top of the wall on the side of the lifting platform 7 .

[0036] The outside of the wall on the side of the lifting platform 7 is the working area of ​​the oil cylinder 6, and the oil cylinder 6, the supporting wheel 1 and the counterweight 11 are all arranged in the working area of ​​the oil cylinder 6.

[0037] One end of the active chain plate 3 is mounted on the middle of the side wall of the oil cylinder 6 working area away from the lifting platform 7.

[0038] There are two active pulleys in a group, namely a first active pulley 4 and a second active pulley 5 ; correspondingly, there are two passive pulleys in a group, namely a first passive pulley 8 and a second passive pulley 9 .

[0039] The oil cylinder transmission device arranged on the left side is connected to the left front and left rear of the lifting platform 7 through the left active chain plate 3 and the left passive chain plate 10 respectively; the right active chain plate 3 and the right passive chain plate 10 of the oil cylinder transmission device arranged on the right side are connected to the right front and right rear of the lifting platform 7 respectively.

[0040] Under the synchronous control of the left and right sets of oil cylinder transmission devices by the PLC control system, the left and right sides of the lifting platform 7 are at the same height.

[0041] During operation, when the lifting platform 7 rises, oil is supplied to the upper end of the oil cylinder 6 and oil is returned to the lower end, the piston rod 2 moves downward, and the supporting wheel 1 drives the active chain plate 3 to move downward, and changes direction through the active pulley to pull the lifting platform 7 up. At the same time, the active pulley drives the passive pulley to rotate synchronously, so that the lifting platform 7 moves smoothly; when the lifting platform 7 descends, oil is supplied to the lower end of the oil cylinder 6 and oil is returned to the upper end, and the piston rod 2 moves upward. At this time, the supporting wheel 1 loses the downward force, and the lifting platform 7 descends by its own gravity.

[0042] The above solution is used to perform water quenching treatment on the 15-5PH hydraulic end fracturing pump workpiece product placed on the lifting platform 7 in the quenching tank:

[0043] In the application embodiment, the PLC control system controls the lifting platform 7 carrying the 15-5PH hydraulic end fracturing pump workpiece product to descend, and water quench in the quenching pool. Then the lifting platform 7 rises, and the hydraulic end product is placed in the air for air cooling. The lifting platform 7 descends again for water quenching, and the process is repeated until the martensite transformation temperature point is 50~70℃. Finally, the lifting platform 7 rises and lifts the 15-5PH hydraulic end fracturing pump workpiece product out of the quenching pool water surface to complete the water quenching.

[0044] The lifting platform 7 carrying the 15-5PH hydraulic end fracturing pump product is quenched in the quenching tank for 5 to 15 minutes. The immersion time is selected according to the size of the product, preferably 10 minutes. The lifting platform 7 is raised and the hydraulic end product is placed in the air for air cooling for 1 to 2 minutes.

[0045] The above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modification, equivalent replacement and improvement made by any technician familiar with the profession to the above embodiments based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A heavy-duty hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece, characterized by: Two sets of oil cylinder transmission devices are arranged symmetrically on the left and right, and the oil cylinder transmission devices are connected to the PLC control system; The oil cylinder transmission device includes an oil cylinder, a pulley block, a supporting roller and a counterweight; the pulley block includes a driving pulley and a passive pulley for front and rear coaxial transmission; the oil cylinder is installed vertically downward with the piston rod of the oil cylinder, and a supporting roller is installed at the end of the piston rod. The oil cylinder transmission device is connected to the lifting platform through the driving chain plate and the passive chain plate; One end of the active chain plate is fixed, and is connected to the lifting platform after passing through the supporting wheel and the active pulley in sequence; one end of the passive chain plate is connected to the lifting platform, and is connected to the counterweight after passing through the passive pulley; The side of the lifting platform is provided with an inclined plate or an inclined platform, the lower part of the inclined plate or the inclined platform is wider than the upper part, and one end of the active chain plate and the passive chain plate is fixedly installed on the inclined plate or the inclined platform.

2. The heavy-load hydraulic transmission lifting mechanism for the hydraulic end fracturing pump workpiece according to claim 1 is characterized in that: A wall is provided on the side of the lifting platform, and the active pulley and the passive pulley are arranged on the top of the wall on the side of the lifting platform.

3. The heavy-load hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece according to claim 2 is characterized in that: The outer side of the wall on the side of the lifting platform is the cylinder working area, and the cylinder, supporting wheel and counterweight are all arranged in the cylinder working area.

4. The heavy-load hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece according to claim 3 is characterized in that: One end of the active chain plate is installed at the middle position of the side wall of the oil cylinder working area away from the lifting platform.

5. The heavy-load hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece according to claim 1, characterized in that: The active pulleys are grouped in two, namely a first active pulley and a second active pulley; correspondingly, the passive pulleys are grouped in two, namely a first passive pulley and a second passive pulley.

6. The heavy-load hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece according to claim 1, characterized in that: The oil cylinder transmission device arranged on the left side is connected to the left front and left rear of the lifting platform through the left active chain plate and the left passive chain plate respectively; the right active chain plate and the right passive chain plate of the oil cylinder transmission device arranged on the right side are connected to the right front and right rear of the lifting platform respectively.

7. The heavy-load hydraulic transmission lifting mechanism for a hydraulic end fracturing pump workpiece according to claim 1, characterized in that: Under the synchronous control of the left and right sets of cylinder transmission devices by the PLC control system, the left and right sides of the lifting platform are the same height.

Images