Device for combined uniform press sintering of gear box support

Abstract

The utility model relates to pressurized sintering technical field and disclose a device for gear box support combination even pressure sintering, including hot pressing furnace sintering box, pressurized subassembly includes heat -proof box, heat -proof box fixedly connected on the lower surface of hot pressing furnace sintering box, the left and right sides of heat -proof box all are set up with its inside intercommunication's rectangular groove, the front and rear inner wall of heat -proof box inside all are set up with the sliding slot, the middle position of heat -proof box inside bottom fixed mounting has the hydraulic cylinder, the output of hydraulic cylinder is fixedly connected with the round mounting plate, through the centralized power of hydraulic cylinder provides, the real -time monitoring feedback of cooperation pressure sensor and spring, can accurate control pressure degree, avoided the local overpressure problem of traditional multi -cylinder scheme because of poor synchronism leads to, simultaneously, simplified hydraulic control system, reduced the shutdown risk of oil circuit failure causes, solved the problem of " increase hydraulic cylinder quantity and easily lead to support deformation because of poor synchronism, system complex cost is high".

Description

Technical Field

[0001] This utility model relates to the field of pressure sintering technology, specifically to a device for uniform pressure sintering of gearbox bracket assembly. Background Technology

[0002] In the field of mechanical manufacturing, the pressure sintering quality of gearbox support assembly is directly related to its structural strength and transmission stability. Especially in applications such as high-speed heavy machinery and precision transmission systems, the uniformity of force distribution during the pressure process is crucial. If the pressure distribution is uneven, it is easy to cause stress concentration inside the support, which may lead to fracture failure in subsequent use.

[0003] The pressure sintering equipment commonly used in the existing technology mostly adopts a single-cylinder driven unidirectional pressure mode. Although it can meet the sintering requirements of simple structural parts, it has obvious defects when dealing with gearbox bracket assembly with complex contours: because the pressure is applied only from one direction, "pressure blind zones" are easily formed in complex parts such as the corners and hollows of the bracket, resulting in significant differences in the density of different areas. The mechanical properties of the final product are uneven and it is difficult to withstand long-term high-frequency transmission loads.

[0004] To address the aforementioned issues, a device for uniformly pressurizing and sintering gearbox support assemblies is proposed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a device for uniform pressure sintering of gearbox bracket assemblies. This solves the problem that commonly used pressure sintering devices in the prior art mostly adopt a single-cylinder driven unidirectional pressure mode. Although this can meet the sintering requirements of simple structural parts, it has obvious defects when dealing with gearbox bracket assemblies with complex contours. Because the pressure is applied from only one direction, "pressure blind zones" are easily formed in complex parts such as the corners and hollows of the bracket, resulting in significant differences in the density of different areas. As a result, the mechanical properties of the final product are uneven and it is difficult to withstand long-term high-frequency transmission loads.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a device for uniformly pressurizing and sintering gearbox support assembly, including a hot press furnace sintering box;

[0009] The pressurizing assembly is installed on the sintering box of the hot press furnace. The pressurizing assembly includes a heat insulation box, which is fixedly connected to the lower surface of the sintering box of the hot press furnace. Rectangular grooves communicating with the interior are opened on both the left and right sides of the heat insulation box, and sliding grooves are opened on the front and rear inner walls of the heat insulation box.

[0010] A hydraulic cylinder is fixedly installed in the middle of the bottom of the heat insulation box, and a circular mounting plate is fixedly connected to the output end of the hydraulic cylinder.

[0011] The upper surface of the circular mounting plate is fixedly connected to a movable rod. The upper end of the movable rod slides through the upper surface of the heat insulation box and extends into the interior of the hot press sintering box. The upper end of the movable rod is fixedly connected to a pressure placement plate.

[0012] Preferably, movable plates are fixedly connected to both the left and right sides of the circular mounting plate, and the opposite ends of the two movable plates slide through the inner walls of the corresponding rectangular grooves respectively.

[0013] The upper surfaces of the two movable plates are fixedly connected with guide rods, the upper ends of which slide through into the interior of the hot press furnace sintering box and are fixedly connected to the lower surface of the pressure placement plate.

[0014] Preferably, mounting plates are fixedly connected to both the front and rear surfaces of the circular mounting plate, and circular plates are fixedly connected to the opposite surfaces of the two mounting plates.

[0015] Preferably, the opposing surfaces of the two circular plates are fixedly connected to sliding plates, and the two sliding plates are slidably connected to corresponding sliding grooves.

[0016] Preferably, a connecting rod is fixedly connected to the upper surface of each of the two circular plates, and a circular sleeve is fixedly fitted onto the outer wall of each of the two connecting rods.

[0017] Preferably, springs are fixedly connected to the upper surfaces of both circular sleeves, and the two connecting rods are located on the inner side of the corresponding springs.

[0018] Preferably, a circular rubber plate is fixedly connected to the upper end of each of the two springs, and an S-shaped pressure sensor is fixedly connected to the upper surface of each of the two circular rubber plates.

[0019] Preferably, both S-shaped pressure sensors are fixedly connected to the top of the heat insulation box, and there are two pressurizing components. The two pressurizing components are arranged in a mirror image, and the two pressurizing components are respectively set on the upper and lower surfaces of the hot press furnace sintering box.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model provides a device for uniform pressure sintering of gearbox support assembly, which has the following beneficial effects:

[0022] By providing centralized power through hydraulic cylinders, and with real-time monitoring and feedback from pressure sensors and springs, the pressure can be precisely controlled, avoiding the local overpressure problem caused by poor synchronization in traditional multi-cylinder solutions. Simultaneously, it simplifies the hydraulic control system, reduces the risk of downtime due to oil circuit failures, and solves the problems of "increasing the number of hydraulic cylinders easily leading to support deformation due to poor synchronization, and high system complexity and cost." This ensures the continuity and stability of the sintering process. The sliding plate along the rectangular groove and the synchronous movement of the guide rod provide stable support for the pressure placement plate, effectively preventing it from tilting during pressurization and ensuring that the pressure is perpendicular to the mold surface. Combined with the guiding effect of the sliding plate and the chute, this further ensures the smooth movement of the pressure placement plate, solving the problem in traditional single-cylinder unidirectional pressurization mode where "pressure is applied only from one direction, creating 'pressure blind spots' in complex parts such as support corners and hollowed-out areas, resulting in significant differences in density and uneven mechanical properties in different areas." This achieves uniform pressure transmission on complex structural supports, ensuring consistent mechanical properties across all parts of the finished product. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the device for uniform pressure sintering of gearbox bracket assembly according to this utility model;

[0024] Figure 2 This is a schematic diagram of the interior of the sintering box of the hot press furnace of this utility model;

[0025] Figure 3 This is a schematic diagram showing the position of the rectangular groove in this utility model;

[0026] Figure 4 This is a schematic diagram showing the location of the slide groove in this utility model;

[0027] Figure 5 This is a schematic diagram showing the position of the mounting plate of this utility model.

[0028] In the diagram: 1. Hot press sintering box; 2. Insulated box; 3. Pressurized placement plate; 4. Guide rod; 5. Moving plate; 6. Moving rod; 7. Rectangular groove; 8. S-shaped pressure sensor; 9. Slide groove; 10. Slide plate; 11. Circular plate; 12. Circular mounting plate; 13. Spring; 14. Connecting rod; 15. Hydraulic cylinder; 16. Circular sleeve; 17. Mounting plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5 This utility model provides a new technical solution: a device for uniform pressure sintering of gearbox bracket assembly, including a hot press furnace sintering box 1 and a pressure assembly. The pressure assembly is set on the hot press furnace sintering box 1 and includes a heat insulation box 2. The heat insulation box 2 is fixedly connected to the lower surface of the hot press furnace sintering box 1. Rectangular grooves 7 communicating with the interior are opened on both the left and right sides of the heat insulation box 2, and sliding grooves 9 are opened on the front and rear inner walls of the heat insulation box 2.

[0031] A hydraulic cylinder 15 is fixedly installed at the middle position of the bottom inside the heat insulation box 2, and a circular mounting plate 12 is fixedly connected to the output end of the hydraulic cylinder 15.

[0032] Among them, a movable rod 6 is fixedly connected to the upper surface of the circular mounting plate 12. The upper end of the movable rod 6 slides through the upper surface of the heat insulation box 2 and slides into the interior of the hot press sintering box 1. A pressure placement plate 3 is fixedly connected to the upper end of the movable rod 6.

[0033] Furthermore, movable plates 5 are fixedly connected to both the left and right sides of the circular mounting plate 12, and the opposite ends of the two movable plates 5 slide through the inner walls of the corresponding rectangular grooves 7 respectively.

[0034] Among them, the upper surfaces of the two movable plates 5 are fixedly connected with guide rods 4, and the upper ends of the two guide rods 4 slide through the interior of the hot press furnace sintering box 1 and are fixedly connected to the lower surface of the pressure placement plate 3.

[0035] Furthermore, mounting plates 17 are fixedly connected to both the front and rear surfaces of the circular mounting plate 12, and circular plates 11 are fixedly connected to the opposite surfaces of the two mounting plates 17.

[0036] Furthermore, slide plates 10 are fixedly connected to the opposing surfaces of the two circular plates 11, and the two slide plates 10 are slidably connected to the corresponding slide grooves 9 respectively.

[0037] Furthermore, connecting rods 14 are fixedly connected to the upper surfaces of the two circular plates 11, and circular sleeves 16 are fixedly fitted onto the outer walls of the two connecting rods 14.

[0038] Furthermore, springs 13 are fixedly connected to the upper surfaces of the two circular sleeves 16, and the two connecting rods 14 are located on the inner side of the corresponding springs 13.

[0039] Furthermore, a circular rubber plate is fixedly connected to the upper end of each of the two springs 13, and an S-shaped pressure sensor 8 is fixedly connected to the upper surface of each of the two circular rubber plates.

[0040] Furthermore, both S-shaped pressure sensors 8 are fixedly connected to the top of the heat insulation box 2. There are two pressurizing components, and the two pressurizing components are arranged in a mirror image. The two pressurizing components are respectively set on the upper and lower surfaces of the hot press furnace sintering box 1.

[0041] Furthermore, when using the device for uniform pressure sintering of gearbox bracket assembly, the pressure placement plate 3, guide rod 4, and moving rod 6 are all made of refractory metals (such as tungsten, molybdenum, tantalum) or high-temperature alloys (such as nickel-based superalloys).

[0042] First, open the door of the hot press furnace sintering box 1, then place the gearbox bracket mold on the upper surface of the pressure plate 3 below, then close the door, and start the hot press furnace to heat the inside of the hot press furnace sintering box 1.

[0043] Subsequently, two hydraulic cylinders 15 are activated, and the telescopic ends of the two hydraulic cylinders 15 push the two circular mounting plates 12 to move to their relative positions;

[0044] When the telescopic ends of the two hydraulic cylinders 15 push the circular mounting plate 12 to move to the relative position, the lower circular mounting plate 12 drives the moving rod 6 and the pressure placement plate 3 to move upward, and the upper circular mounting plate 12 drives the corresponding moving rod 6 and the pressure placement plate 3 to move downward. The two pressure placement plates 3 gradually approach each other, forming a pressure effect of pinching the gearbox bracket mold in the middle.

[0045] When the circular mounting plate 12 moves, the moving plates 5 on its left and right sides slide along the rectangular groove 7, driving the guide rod 4 to move up and down synchronously. The upper end of the guide rod 4 is fixed to the pressure placement plate 3, providing stable support for the pressure placement plate 3, preventing it from tilting due to uneven force during the pressurization process, ensuring that the pressurization direction is perpendicular to the mold surface, and ensuring the uniformity of pressurization.

[0046] Among them, the mounting plate 17 on the front and rear surfaces of the circular mounting plate 12 drives the circular plate 11 and the sliding plate 10 to slide along the slide groove 9, which further enhances the stability of the circular mounting plate 12 movement, avoids it from deviating when moving up and down, and indirectly improves the accuracy of the pressure placing plate 3 in applying pressure to the mold.

[0047] As the circular mounting plate 12 moves, the circular sleeve 16 on the connecting rod 14 pushes the spring 13 to compress, and the circular rubber plate at the upper end of the spring 13 squeezes the S-shaped pressure sensor 8. The S-shaped pressure sensor 8 detects the pressure value in real time and provides feedback. When the pressure reaches the preset value, the control system controls the hydraulic cylinder 15 to stop extending and retracting, so as to achieve precise pressurization and avoid excessive pressure that could cause deformation of the mold or bracket.

[0048] Among them, since the pressure placement plate 3, guide rod 4, and moving rod 6 are made of refractory metals (such as tungsten and molybdenum) or high-temperature alloys (nickel-based superalloys), they can withstand the high-temperature environment (usually hundreds to thousands of degrees Celsius) in the hot press furnace sintering box 1, prevent the components from softening and failing at high temperatures, and ensure that the pressure process is carried out stably in the high-temperature sintering environment.

[0049] Among them, while the hot press furnace sintering box 1 heats the inside, the upper and lower pressurizing components continuously apply pressure, so that the gearbox bracket assembly completes sintering under high temperature and high pressure. The pressure is evenly transmitted to all parts of the mold through the pressurizing plate 3. With the help of a stable guiding structure, the sintering density of each part of the bracket is consistent, thus improving the mechanical properties of the product.

[0050] The hydraulic cylinder 15 provides centralized power, and with the real-time monitoring and feedback of the S-shaped pressure sensor 8 and spring 13, the pressure can be precisely controlled, avoiding the local overpressure problem caused by poor synchronization in the traditional multi-cylinder scheme. At the same time, it simplifies the hydraulic control system, reduces the risk of downtime caused by oil circuit failure, and solves the problem that "increasing the number of pressure cylinders can easily lead to bracket deformation due to poor synchronization, and the system is complex and costly." It ensures the continuity and stability of the sintering process. The sliding plate 5 slides along the rectangular groove 7 and the guide rod 4 moves synchronously, providing stable support for the pressure placement plate 3, effectively preventing it from tilting during the pressurization process and ensuring that the pressure is perpendicular to the mold surface. With the guiding effect of the slide plate 10 and the slide groove 9, the smooth movement of the pressure placement plate 3 is further guaranteed. This solves the problem that "pressure is applied from only one direction in the traditional single-cylinder unidirectional pressurization mode, forming a 'pressure blind zone' in complex parts such as bracket corners and hollows, resulting in significant differences in density and uneven mechanical properties in different areas." It realizes the uniform transmission of pressure on the complex structure bracket and ensures that the mechanical properties of each part of the finished product are consistent.

[0051] The real-time monitoring and feedback is achieved when the hydraulic cylinder 15 drives the pressurizing component to move. The connecting rod 14 moves synchronously with the circular mounting plate 12, causing the circular sleeve 16 to compress the spring 13. The pressure generated by the deformation of the spring 13 acts on the S-shaped pressure sensor 8, which converts the mechanical signal into an electrical signal. The electrical signal is transmitted to the control system in real time, and the system compares the measured pressure value with a preset threshold. If the threshold is reached, the control system immediately commands the hydraulic cylinder 15 to stop moving. If the threshold is not reached, the hydraulic cylinder 15 continues to run, forming a closed-loop feedback control.

[0052] Structural Description: Insulated Box 2:

[0053] Fixed on the upper and lower surfaces (mirror-reflected) of the sintering box 1 of the hot press furnace, the internal pressure components, such as hydraulic cylinder 15, serve as heat insulation, protecting the internal pressure components from the high temperature of the hot press furnace and maintaining the normal operating temperature of the pressure components.

[0054] Pressure placement plate 3:

[0055] The connecting rod 6 and the guide rod 4 are located inside the sintering box 1 of the hot press furnace, one at the top and one at the bottom. They move relative to each other under the drive of the hydraulic cylinder, directly contacting and squeezing the gearbox support mold to achieve uniform pressure. The material is a heat-resistant and heat-melting metal or a high-temperature alloy.

[0056] Guide rod 4:

[0057] The connecting movable plate 5 and the pressure placement plate 3 slide up and down with the movable plate, providing stable guidance for the movement of the pressure placement plate 3, preventing it from tilting during the pressurization process, ensuring that the pressurization direction is perpendicular to the mold surface, and ensuring uniform pressurization.

[0058] Mobile board 5:

[0059] Fixed on the left and right sides of the circular mounting plate 12, it slides through the rectangular groove 7, connecting the circular mounting plate and the guide rod 4, driving the guide rod to move synchronously, thereby enhancing the support stability of the pressure placement plate.

[0060] Move lever 6:

[0061] The lower end is connected to a circular mounting plate 12, and the upper end is connected to a pressure placement plate 3. It passes through the heat insulation box 2 and transmits the power of the hydraulic cylinder 15 to the pressure placement plate, driving the pressure placement plate to move up and down to achieve the pressure action.

[0062] Rectangular slot 7:

[0063] The sliding plates 5 are located on the left and right sides of the heat insulation box 2, providing a channel for the movement of the sliding plates and guide rods, restricting the direction of movement, and ensuring that the guide rods move vertically.

[0064] S-shaped pressure sensor 8:

[0065] Fixed to the top of the heat insulation box 2, located above the spring 13, and in contact with the circular rubber plate, it detects the pressure value transmitted by the spring in real time and feeds it back to the control system. When the pressure reaches the preset value, it controls the hydraulic cylinder to stop pressurizing, thus achieving precise pressure control.

[0066] Slide 9:

[0067] The slide plate 10 is installed on the front and rear inner walls of the heat insulation box 2 to provide guidance for the movement of the circular mounting plate 12 in the front and rear directions, preventing it from deviating during movement and improving the stability of pressurization.

[0068] Skateboard 10:

[0069] Fixed to the opposite side of the circular plate 11, and slidably connected to the inner wall of the slide groove 9, it slides with the circular mounting plate 12, further enhancing the stability of the circular mounting plate movement and indirectly ensuring uniform pressure.

[0070] Circular plate 11:

[0071] The mounting plate 17 and the slide plate 10 are connected, and the connecting rod 14 is fixed to transmit the power of the mounting plate to the slide plate. At the same time, it provides a mounting base for the connecting rod and the spring, ensuring the stable installation of the pressure detection assembly.

[0072] Circular mounting plate 12:

[0073] Connecting the output end of hydraulic cylinder 15, moving rod 6, moving plate 5 and mounting plate 17, it moves up and down under the drive of hydraulic cylinder, transmitting the power of hydraulic cylinder to each component, and is the distribution center of pressurization power.

[0074] Spring 13:

[0075] It is fitted onto the outer wall of the connecting rod 14, with a circular sleeve 16 at the lower end and a circular rubber plate at the upper end. When squeezed by the circular sleeve, it generates elasticity, which transmits the pressure to the S-shaped pressure sensor 8. At the same time, it plays a buffering role to prevent sudden pressure changes from damaging the sensor.

[0076] Connecting rod 14:

[0077] Fixed to the upper surface of the circular plate 11, the outer wall is fitted with a circular sleeve 16 and a spring 13. As the circular plate moves, it pushes the spring to compress, providing mounting support for the spring and pressure sensor, and transmitting pressure to the sensor.

[0078] Hydraulic cylinder 15:

[0079] Fixed in the middle of the bottom inside the heat insulation box 2, the output end is connected to the circular mounting plate 12, which provides pressurization power to drive the circular mounting plate, the moving rod and the pressurization placement plate to move, thereby realizing the pressurization action on the mold;

[0080] A hydraulic pump (not shown in the figure because it is existing technology) is installed on the outside of the heat insulation box 2. It is connected to the rodless chamber and rod chamber of the hydraulic cylinder 15 through high-pressure pipelines. The electromagnetic reversing valve on the pipeline switches the oil circuit direction by receiving the control system signal, so as to realize the extension and retraction of the piston rod of the hydraulic cylinder 15. A pressure relay is provided at the outlet of the hydraulic pump, which together with the S-shaped pressure sensor 8 constitutes a dual pressure protection.

[0081] Circular sleeve 16:

[0082] It is fixedly sleeved on the outer wall of the connecting rod 14, located at the lower end of the spring 13. As the connecting rod moves, it pushes the spring to compress, converting the movement of the circular mounting plate into the compression of the spring, and indirectly transmitting the pressure to the sensor.

[0083] Mounting plate 17:

[0084] Connect the front and rear surfaces of the circular mounting plate 12 to the circular plate 11 to transmit the power of the circular mounting plate to the circular plate and the slide plate, ensuring that the slide plate moves synchronously with the circular mounting plate and enhancing the overall movement stability.

[0085] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for uniformly pressurizing and sintering gearbox support assemblies, characterized in that, include: Hot press sintering box (1); The pressurization assembly includes a heat insulation box (2), which is fixedly connected to the lower surface of the hot press furnace sintering box (1). The heat insulation box (2) has rectangular grooves (7) communicating with its interior on both the left and right sides. The heat insulation box (2) has sliding grooves (9) on both the front and rear inner walls. Among them, a hydraulic cylinder (15) is fixedly installed in the middle position of the bottom of the heat insulation box (2), and a circular mounting plate (12) is fixedly connected to the output end of the hydraulic cylinder (15). Among them, a movable rod (6) is fixedly connected to the upper surface of the circular mounting plate (12). The upper end of the movable rod (6) slides through the upper surface of the heat insulation box (2) and slides into the interior of the hot press furnace sintering box (1). A pressure placement plate (3) is fixedly connected to the upper end of the movable rod (6).

2. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 1, characterized in that: The circular mounting plate (12) is fixedly connected to movable plates (5) on both the left and right sides. The opposite ends of the two movable plates (5) slide through the inner wall of the corresponding rectangular groove (7). Among them, the upper surfaces of the two movable plates (5) are fixedly connected with guide rods (4), and the upper ends of the two guide rods (4) slide through into the interior of the hot press furnace sintering box (1) and are fixedly connected to the lower surface of the pressure placement plate (3).

3. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 1, characterized in that: The circular mounting plate (12) is fixedly connected to the front and rear surfaces of the two mounting plates (17), and the opposing surfaces of the two mounting plates (17) are fixedly connected to the circular plates (11).

4. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 3, characterized in that: The two circular plates (11) are fixedly connected to the opposite surfaces of each other by a sliding plate (10), and the two sliding plates (10) are slidably connected to the corresponding sliding grooves (9).

5. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 3, characterized in that: The upper surfaces of the two circular plates (11) are fixedly connected with connecting rods (14), and the outer walls of the two connecting rods (14) are fixedly fitted with circular sleeves (16).

6. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 5, characterized in that: Springs (13) are fixedly connected to the upper surfaces of the two circular sleeves (16), and two connecting rods (14) are located on the inner side of the corresponding springs (13).

7. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 6, characterized in that: Both springs (13) have a circular rubber plate fixedly connected to their upper ends, and an S-shaped pressure sensor (8) is fixedly connected to the upper surface of both circular rubber plates.

8. The apparatus for uniform pressure sintering of gearbox support assembly according to claim 7, characterized in that: Both S-shaped pressure sensors (8) are fixedly connected to the top of the heat insulation box (2). There are two pressurizing components. The two pressurizing components are arranged in a mirror image. The two pressurizing components are respectively set on the upper and lower surfaces of the hot press furnace sintering box (1).

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