Turbocharger axis fixing device

Abstract

The utility model discloses an axis fixing device for a turbocharger, which belongs to the technical field of fixing devices and is characterized in that the axis fixing device comprises a fixing cavity seat, a chassis is fixedly connected to the bottom side in the fixing cavity seat, and a fixing mechanism is arranged in the fixing cavity seat. The two-way hydraulic cylinder serves as a power source, the telescopic end of the two-way hydraulic cylinder can conduct telescopic motion according to the size of the axis of the turbocharger, before the turbocharger with the large axis size is placed in the fixed cavity base, the telescopic end of the two-way hydraulic cylinder extends to push the lower connecting rod and the upper connecting rod to move outwards, and on the contrary, when the axis size is small, the telescopic end is shortened to push the lower connecting rod and the upper connecting rod to move outwards. The upper connecting rod and the lower connecting rod are pulled to move inwards, the upper connecting rod and the lower connecting rod move to drive the fixing sleeves to adjust the positions, so that the distance between the fixing sleeves is changed to adapt to turbocharger axes with different diameters, and the deformation attaching pads in the fixing sleeves play a key role in fixing.

Description

Technical Field

[0001] This utility model relates to the field of fixing device technology, and in particular to a turbocharger shaft fixing device. Background Technology

[0002] Turbochargers are widely used in modern automobiles. After using a turbocharger, the engine power is increased, the engine emissions are improved, and it can also provide high-altitude compensation, improve fuel economy and reduce fuel consumption. The turbocharger consists of a turbocharger shaft fixed to the housing, and the turbocharger shaft is composed of multiple components.

[0003] When installing multiple components of a turbocharger, due to the lack of corresponding tools to secure the turbocharger shaft, some screws cannot be fully tightened during the tightening process, resulting in screws falling off during turbocharger use and frequent mechanical accidents.

[0004] An existing patent (publication number: CN204877663U) discloses a turbocharger shaft fixing device. This utility model provides a turbocharger shaft fixing device that, when it is necessary to tighten the screws that fix the parts on the turbocharger shaft, places the turbocharger shaft on the turbocharger shaft fixing device. When tightening the screws that fix the parts, it can effectively ensure that the screws are tightened in place, avoiding the problem of screws falling off and frequent mechanical accidents during the use of the turbocharger.

[0005] To address the aforementioned issues, existing patents offer solutions. However, the slots and hollow cylinders in these patents are key fixing structural components. The slots are used to hold impellers and other parts, while the hollow cylinders accommodate the shaft. The dimensions of these structures are determined according to specific design standards. When dealing with turbochargers of different specifications, such as those with larger or smaller shaft sizes, the existing slots and hollow cylinders may not provide adequate fixing. If the shaft is too large, it may not fit into the hollow cylinder; if the shaft is too small, it may not be stably positioned within the cylinder. Furthermore, related parts may not be able to accurately engage with the slots, rendering the device ineffective and hindering smooth operation. This necessitates replacing different models of the device with different turbochargers, which undoubtedly increases cost and operational complexity, significantly reducing the device's versatility and applicability.

[0006] To address this, a turbocharger shaft fixing device is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a turbocharger shaft fixing device that solves the problem in the aforementioned patent where the key fixing structural components are the slot and the hollow cylinder. The slot is used to hold the impeller and other components, and the hollow cylinder is used to accommodate the shaft. The dimensions of these structures are determined according to specific design standards. When dealing with turbochargers of different specifications, such as those with large or small shaft sizes, the existing slot and hollow cylinder may not provide a suitable fixing effect. If the shaft is too large, it may not be able to fit into the hollow cylinder; if the shaft is too small, it may not be able to achieve stable positioning within the cylinder. At the same time, related components may not be able to accurately fit into the slot, thus rendering the device ineffective and causing operational difficulties. Furthermore, replacing different models of the device to adapt to different turbochargers undoubtedly increases costs and operational complexity, greatly reducing the device's versatility and applicability.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a turbocharger shaft fixing device, including a fixing cavity seat, a chassis fixedly connected to the bottom side inside the fixing cavity seat, a fixing mechanism provided inside the fixing cavity seat, and a buffer structure provided in the middle inside the fixing cavity seat;

[0009] The fixing mechanism includes a bidirectional hydraulic cylinder bolted to the top of the chassis. The bidirectional hydraulic cylinder is located at the bottom of the bearing structure. The telescopic ends on both sides of the bidirectional hydraulic cylinder penetrate the interior of the fixing cavity seat. A lower connecting rod is bolted to the telescopic end of the bidirectional hydraulic cylinder. An upper connecting rod is bolted to the top of the lower connecting rod. The inner side of the upper connecting rod penetrates the outer side of the fixing cavity seat. A fixing sleeve is bolted to the inner side of the upper connecting rod. The fixing sleeve is located on both sides inside the fixing cavity seat. A deformation fitting pad is bolted to the inside of the fixing sleeve.

[0010] Preferably, positioning components are provided on both the front and rear sides of the fixed cavity seat, and the positioning components include fixing blocks fixedly connected to the front and rear sides of the fixed cavity seat.

[0011] Preferably, the top of the fixing block has a slot, and a positioning bolt is provided inside the slot.

[0012] Preferably, a reinforcing pad is provided on the outside of the positioning bolt, and the reinforcing pad is located on the outside of the top of the slot.

[0013] Preferably, the buffer structure includes a partition bolted to the middle of the fixed cavity seat, the partition being located at the top of the bidirectional hydraulic cylinder.

[0014] Preferably, a buffer bearing pad is provided on the top of the partition, and the buffer bearing pad is located in the middle of the fixed cavity seat.

[0015] Preferably, rotating sleeves are fixedly connected to both the front and rear sides of the fixed cavity seat, and a lifting handle is rotatably connected inside the rotating sleeves.

[0016] Preferably, a fixing post is fixedly connected to the outer side of the bottom of the chassis, and a grounding plate is fixedly connected to the bottom of the fixing post.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application utilizes a fixed mechanism with a bidirectional hydraulic cylinder as the power source. The telescopic end of the cylinder can extend and retract according to the size of the turbocharger shaft. When a turbocharger with a larger shaft is placed inside the fixed cavity seat, the telescopic end of the bidirectional hydraulic cylinder extends, pushing the lower and upper connecting rods outwards. Conversely, when the shaft size is smaller, the telescopic end shortens, pulling the upper and lower connecting rods inwards. The movement of the upper and lower connecting rods adjusts the position of the fixed sleeves, thereby changing the distance between the fixed sleeves to accommodate turbocharger shafts of different diameters. The deformation-fitting pad plays a crucial role in fixing the turbocharger. After the fixing sleeve is positioned, the turbocharger shaft is placed in the fixing cavity seat, and the turbocharger shaft contacts the deformation-fitting pad. Since the deformation-fitting pad can deform according to the shape and surface condition of the shaft, it can fit tightly against the shaft surface, providing stable friction and preventing the shaft from moving during the fixing process, thereby achieving effective fixing of the shaft. At the same time, related components such as the impeller can also be fixed by the cooperation of the fixing sleeve and the deformation-fitting pad, ensuring their positional stability during installation or disassembly.

[0019] 2. This application incorporates a fixed cavity seat and a buffer structure. The fixed cavity seat provides a closed space environment for the entire fixing process. Its internal dimensions are rationally designed to accommodate turbocharger shafts and related components of different specifications. It also provides installation positions for the fixing mechanism and the buffer structure. The buffer structure is located in the middle of the fixed cavity seat and plays a role in buffering and supporting during the fixing process. When the turbocharger shaft and related components are placed into the fixed cavity seat, impact forces may be generated due to excessive placement speed or collisions between components. The buffer structure can absorb and buffer these impact forces, protecting the shaft and related components from damage. At the same time, it can also ensure that the fixing mechanism works in a stable environment, improving the accuracy and reliability of the fixing. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the turbocharger shaft fixing device of this utility model;

[0021] Figure 2 This is a structural diagram of the fixed cavity seat of this utility model;

[0022] Figure 3 This is a structural diagram of the fixing mechanism of this utility model;

[0023] Figure 4 This is a structural diagram of the positioning component of this utility model;

[0024] Figure 5 This is a structural diagram of the load-bearing structure of this utility model;

[0025] Figure 6 This is a structural diagram of the chassis of this utility model.

[0026] In the diagram, 1. Fixed cavity seat; 2. Positioning assembly; 201. Fixing block; 202. Hole slot; 203. Positioning bolt; 204. Reinforcing pad; 3. Chassis; 4. Fixing mechanism; 401. Two-way hydraulic cylinder; 402. Lower connecting rod; 403. Upper connecting rod; 404. Fixing sleeve; 405. Deformation fitting pad; 5. Bearing structure; 501. Partition plate; 502. Buffer bearing pad; 6. Rotating sleeve; 7. Lifting handle; 8. Fixing column; 9. Grounding plate. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 The present invention provides the following technical solution:

[0029] A turbocharger shaft fixing device includes a fixing cavity seat 1, a chassis 3 fixedly connected to the bottom side inside the fixing cavity seat 1, a fixing mechanism 4 provided inside the fixing cavity seat 1, and a buffer structure 5 provided in the middle inside the fixing cavity seat 1.

[0030] The fixing mechanism 4 includes a bidirectional hydraulic cylinder 401 bolted to the top of the chassis 3. The bidirectional hydraulic cylinder 401 is located at the bottom of the bearing structure 5. The telescopic ends on both sides of the bidirectional hydraulic cylinder 401 penetrate the interior of the fixing cavity seat 1. A lower connecting rod 402 is bolted to the telescopic end of the bidirectional hydraulic cylinder 401. An upper connecting rod 403 is bolted to the top of the lower connecting rod 402. The inner side of the upper connecting rod 403 penetrates the outer side of the fixing cavity seat 1. A fixing sleeve 404 is bolted to the inner side of the upper connecting rod 403. The fixing sleeve 404 is located on both sides inside the fixing cavity seat 1. A deformation fitting pad 405 is bolted to the inside of the fixing sleeve 404.

[0031] In this embodiment: the bidirectional hydraulic cylinder 401 drives the lower connecting rod 402 and the upper connecting rod 403 to move, thereby adjusting the position of the fixing sleeve 404. This allows the distance between the fixing sleeves 404 to accommodate turbocharger shafts of different diameters. When the shaft size is large, the bidirectional hydraulic cylinder 401 extends, increasing the distance between the fixing sleeves 404. When the shaft size is small, the bidirectional hydraulic cylinder 401 shortens, decreasing the distance between the fixing sleeves 404. This adjustable design overcomes the problem in the prior art where the fixed structure size cannot accommodate shafts of different specifications, greatly improving the versatility of the device. The deformation-fitting pad 405 inside the fixing sleeve 404 can deform according to the shape and surface condition of the shaft, tightly fitting the shaft surface. Providing stable friction effectively fixes the shaft, preventing it from moving during installation or disassembly. For impellers and other related components, stable fixation is also achieved through the cooperation of the fixing sleeve 404 and the deformation fitting pad 405, ensuring their accurate positioning during operation and avoiding difficulties in installation or disassembly and potential damage to components due to insecure fixation. The buffer structure 5 is located in the middle of the fixed cavity seat 1, which can absorb and buffer the impact force generated when placing the turbocharger shaft and related components during the fixing process. This not only protects the shaft and related components from damage, but also provides a stable working environment for the fixing mechanism 4, which helps to improve the accuracy and reliability of fixing and further enhances the overall performance of the device.

[0032] Specifically, such as Figure 2 As shown, positioning components 2 are provided on both the front and rear sides of the fixed cavity seat 1. The positioning components 2 include fixing blocks 201 that are fixedly connected to the front and rear sides of the fixed cavity seat 1.

[0033] Specifically, such as Figure 2 As shown, the top of the fixing block 201 has a slot 202, and a positioning bolt 203 is installed inside the slot 202.

[0034] Specifically, such as Figure 2 As shown, a reinforcing pad 204 is fitted on the outside of the positioning bolt 203, and the reinforcing pad 204 is located on the outside of the top of the slot 202.

[0035] In this embodiment, the positioning assembly 2, consisting of the fixing block 201, the slot 202, and the positioning bolt 203, can install the fixing cavity seat 1 to a suitable position to ensure the stability of the turbocharger shaft when it is fixed by the fixing mechanism 4, and to improve the accuracy and stability of the fixing. Furthermore, the reinforcing pad 204 on the outside of the positioning bolt 203 can increase the friction and connection tightness between the positioning bolt 203 and the fixing block 201. When the positioning bolt 203 is tightened, the reinforcing pad 204 can prevent the positioning bolt 203 from loosening, thereby ensuring the stability of the turbocharger shaft position during the fixing process.

[0036] Specifically, such as Figure 5 As shown, the buffer structure 5 includes a partition 501 bolted to the middle of the interior of the fixed cavity seat 1, and the partition 501 is located on top of the bidirectional hydraulic cylinder 401.

[0037] Specifically, such as Figure 5 As shown, a buffer bearing pad 502 is provided on the top of the partition 501, and the buffer bearing pad 502 is located in the middle inside the fixed cavity seat 1.

[0038] In this embodiment, the buffer structure 5, consisting of the partition 501 and the buffer bearing pad 502, is located in the middle of the fixed cavity seat 1. It can effectively absorb and buffer the impact force generated when the turbocharger and its components are placed. When the turbocharger or its components are quickly placed into the fixed cavity seat 1, the buffer bearing pad 502 can reduce the impact force on the shaft and other components, protect them from damage, and ensure the smooth progress of the fixing process. The partition 501, as part of the buffer structure 5, plays a role in separating and supporting the internal space of the fixed cavity seat 1. It is located on the top of the bidirectional hydraulic cylinder 401, providing a stable support platform for the bidirectional hydraulic cylinder 401. This helps the bidirectional hydraulic cylinder 401 to maintain stability during operation, thereby better realizing the adjustment of the position of the fixed sleeve 404 and improving the working reliability of the entire device.

[0039] Specifically, such as Figure 5 As shown, rotating sleeves 6 are fixedly connected to both the front and rear sides of the fixed cavity seat 1, and a lifting handle 7 is rotatably connected inside the rotating sleeve 6.

[0040] Specifically, such as Figure 6 As shown, a fixing post 8 is fixedly connected to the outer side of the bottom of the chassis 3, and a grounding plate 9 is fixedly connected to the bottom of the fixing post 8.

[0041] In this embodiment: the rotating sleeves 6 on the front and rear sides of the fixed cavity seat 1 and the internally rotatably connected lifting handle 7 facilitate the operator to lift and move the entire fixed cavity seat 1. The design of the lifting handle 7 conforms to the ergonomic principle, allowing the operator to easily grasp the lifting handle 7 to move the device, enabling it to be placed quickly and accurately in the appropriate working position, thus improving work efficiency. Through the structure of the fixing column 8 on the outer side of the bottom of the chassis 3 and the grounding plate 9 at the bottom, the entire device can be stably placed on the ground during use. The grounding plate 9 increases the contact area with the ground, improving the stability of the device and preventing the device from shaking or tipping over during the fixing of the turbocharger, ensuring the safety and accuracy of the fixing operation.

[0042] Working principle: During the use of the turbocharger shaft fixing device, the operator moves the entire fixing cavity seat 1 by holding the lifting handle 7. Then, the fixing block 201, the slot 202, and the positioning bolt 203 are used to install the fixing cavity seat 1 into the appropriate position to ensure the stability of the turbocharger shaft when it is fixed by its fixing mechanism 4, and to improve the accuracy and stability of the fixing. Then, according to the size of the turbocharger shaft, the bidirectional hydraulic cylinder 401 starts to work, and the bidirectional hydraulic... Cylinder 401 is bolted to the top of chassis 3 and located at the bottom of bearing structure 5. Its telescopic ends on both sides penetrate the interior of fixed cavity seat 1. When a shaft needs to be fixed, if the shaft size is large, the telescopic ends of the bidirectional hydraulic cylinder 401 extend, pushing the lower connecting rod 402 upwards. The upper connecting rod 403 bolted to the top of the lower connecting rod 402 also moves upwards. The inner side of the upper connecting rod 403 penetrates the outer side of the fixed cavity seat 1 and is bolted with a fixing sleeve 404. This increases the distance between the fixing sleeves 404. Conversely, if the shaft... With its smaller size, the telescopic end of the bidirectional hydraulic cylinder 401 is shortened, pulling the upper connecting rod 403 and the lower connecting rod downwards, thus reducing the distance between the fixing sleeves 404. A deformation-fitting pad 405 is bolted inside the fixing sleeve 404. After the fixing sleeve 404 is properly positioned, the turbocharger shaft is placed in the fixing cavity seat 1, and the shaft contacts the deformation-fitting pad 405. The deformation-fitting pad 405 deforms according to the shape and surface condition of the shaft, tightly fitting against the shaft surface, providing stable friction, thereby effectively fixing the shaft. At the same time, related components such as the impeller can also be fixed through the cooperation of the fixing sleeve 404 and the deformation-fitting pad 405, ensuring their stable position during installation or disassembly. Meanwhile, the buffer bearing pad 502 is located in the middle inside the fixing cavity seat 1. When placing the turbocharger and its components into the fixing cavity seat 1, impact forces may be generated due to excessive placement speed or collisions between components. This protects the shaft and related components from damage, ensuring the smooth progress of the fixing process.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A turbocharger shaft fixing device, comprising a fixing cavity seat (1), characterized in that: A chassis (3) is fixedly connected to the bottom side inside the fixed cavity seat (1), a fixing mechanism (4) is provided inside the fixed cavity seat (1), and a buffer structure (5) is provided in the middle inside the fixed cavity seat (1). The fixing mechanism (4) includes a bidirectional hydraulic cylinder (401) bolted to the top of the chassis (3). The bidirectional hydraulic cylinder (401) is located at the bottom of the bearing structure (5). The telescopic ends on both sides of the bidirectional hydraulic cylinder (401) penetrate the interior of the fixing cavity seat (1). The telescopic ends of the bidirectional hydraulic cylinder (401) are bolted with a lower connecting rod (402). The top of the lower connecting rod (402) is bolted with an upper connecting rod (403). The inner side of the upper connecting rod (403) penetrates the outer side of the fixing cavity seat (1). The inner side of the upper connecting rod (403) is bolted with a fixing sleeve (404). The fixing sleeve (404) is located on both sides inside the fixing cavity seat (1). The inside of the fixing sleeve (404) is bolted with a deformation fitting pad (405).

2. The turbocharger shaft fixing device according to claim 1, characterized in that: Positioning components (2) are provided on both the front and rear sides of the fixed cavity seat (1). The positioning components (2) include fixing blocks (201) that are fixedly connected to the front and rear sides of the fixed cavity seat (1).

3. The turbocharger shaft fixing device according to claim 2, characterized in that: The top of the fixing block (201) is provided with a slot (202), and a positioning bolt (203) is provided inside the slot (202).

4. The turbocharger shaft fixing device according to claim 3, characterized in that: A reinforcing pad (204) is fitted on the outside of the positioning bolt (203), and the reinforcing pad (204) is located on the outside of the top of the slot (202).

5. The turbocharger shaft fixing device according to claim 1, characterized in that: The buffer structure (5) includes a partition (501) bolted to the middle of the interior of the fixed cavity seat (1), the partition (501) being located at the top of the bidirectional hydraulic cylinder (401).

6. A turbocharger shaft fixing device according to claim 5, characterized in that: The top of the partition (501) is provided with a buffer bearing pad (502), which is located in the middle of the fixed cavity seat (1).

7. A turbocharger shaft fixing device according to claim 1, characterized in that: The fixed cavity seat (1) has rotating sleeves (6) fixedly connected to both the front and rear sides, and the rotating sleeves (6) are rotatably connected to the inside of the rotating sleeves (6).

8. A turbocharger shaft fixing device according to claim 1, characterized in that: A fixing post (8) is fixedly connected to the outer side of the bottom of the chassis (3), and a grounding plate (9) is fixedly connected to the bottom of the fixing post (8).

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