Gear dismounting device for vehicle-mounted screw blower

Abstract

The gear dismounting device for the vehicle-mounted screw air blower comprises a puller assembly, a tension supporting plate and a lag screw, the puller assembly is provided with a first connecting plate, a second connecting plate and a tension plate, the first connecting plate is rotationally connected with the second connecting plate, the second connecting plate is rotationally connected with the tension plate, and the tension plate is rotationally connected with the tension supporting plate. A hook-shaped structure is arranged on the tension plate and can be locked with the outer circumference of the end face of the tension supporting plate, an avoiding hole is formed in the middle of the tension supporting plate, a plurality of tension supporting holes are formed in the positions, located on the outer circumference side of the avoiding hole, of the tension supporting plate, and the inner diameter of the tension supporting holes is larger than the outer diameter of a screw rod of the tension screw. The inner diameter of the tension supporting hole is smaller than the outer diameter of a nut of the lag screw. When the dismounting device is used for dismounting the gear, the pulling force of the dismounting device acts on the end position of the gear, and in the dismounting process, the gear surface position of the gear cannot be touched, and the gear surface cannot be collided. The dismounting device can be widely applied to the dismounting work of the gear in the screw blower.

Description

Technical Field

[0001] This utility model relates to a disassembly device, and more particularly to a gear disassembly device for a vehicle-mounted screw blower. Background Technology

[0002] A screw blower is a device that compresses and transports air through the rotation of screw blades. Inside, it generates air pressure through two interlocking helical impeller rotors. When these two rotors rotate relative to each other, they continuously push and compress the air in the gaps on the side of the impellers, and finally discharge it through the outlet.

[0003] During long-term operation, screw blowers inevitably experience malfunctions, requiring disassembly and maintenance. When disassembling the gears on the impeller rotor, most current methods involve using a puller. The locking hook at the front of the puller is locked from the outer circumference of the gear, and then the puller lever is pulled to disassemble the gear. However, during this disassembly process, the locking hook at the front of the puller can easily cause impact and wear to the gear teeth, rendering the gear unusable and increasing maintenance costs. Utility Model Content

[0004] This utility model addresses the above-mentioned technical problems by providing a gear disassembly device for a vehicle-mounted screw blower. When using this disassembly device to disassemble gears, the pulling force of the disassembly device is applied to the end position of the gear. During the disassembly process, the disassembly device will not touch the tooth surface of the gear, thus avoiding collisions and wear on the tooth surface, reducing maintenance costs. Furthermore, this gear disassembly device is not limited by the length of the main shaft inside the blower and can be applied to gear disassembly work on main shafts of different lengths, thus having a wide range of applications.

[0005] Therefore, the technical solution of this utility model is a gear disassembly device for a vehicle-mounted screw blower, including a puller assembly, a tension support plate, and a tension screw. A tension support column is provided at the center of the puller assembly, and a first connecting plate is provided on the outer circumference of the tension support column. There are multiple first connecting plates, and a second connecting plate is provided on the outer side of each of the multiple first connecting plates. The first connecting plate and the second connecting plate are rotatably connected on one side. A tension plate is provided on the outer side of the second connecting plate, and the other side of the second connecting plate is rotatably connected to the tension plate. A hook-shaped structure is provided on one side of the tension plate, and the hook-shaped structure can be locked with the outer circumference of the end face of the tension support plate.

[0006] The tension support column has a threaded hole at its center, and a tension screw is installed inside the threaded hole. The outer circumference of the tension screw has an external thread, which realizes the threaded rotational connection between the tension support column and the tension screw.

[0007] The tension support plate has a through clearance hole at its center. The tension support plate has multiple tension support holes on the outer circumference of the clearance hole. The inner diameter of the tension support hole is larger than the outer diameter of the tension screw, and the inner diameter of the tension support hole is smaller than the outer diameter of the tension screw nut.

[0008] Preferably, the first connecting plate has a through hole near the outer side, and the second connecting plate has a through hole near the side of the first connecting plate. The first connecting plate and the second connecting plate are hinged together by hinge screws passing through the holes in the first connecting plate and the second connecting plate respectively.

[0009] The tension plate consists of a tension plate locking section, a tension plate connecting section, and a tension plate adjusting section. The tension plate locking section is located at the front of the tension plate, the tension plate connecting section is located in the middle of the tension plate, and the tension plate adjusting section is located at the rear of the tension plate. The tension plate locking section has a hook-shaped structure.

[0010] A through hole is provided in the middle of the tension plate connecting section, and a through hole is provided on the side of the second connecting plate away from the first connecting plate. The second connecting plate and the tension plate are hinged and fixed by hinge screws passing through the holes in the second connecting plate and the tension plate connecting section, respectively.

[0011] Preferably, the tension screw consists of a tension screw positioning section, a tension screw rotating connection section, and a tension screw driving section. The tension screw positioning section is located at the front of the tension screw, the tension screw rotating connection section is located in the middle of the tension screw, and the tension screw driving section is located at the rear of the tension screw.

[0012] The positioning section of the tension screw is tapered, the rotating connection section of the tension screw has external threads, and the driving section of the tension screw has a polygonal external shape.

[0013] Preferably, there are three first connecting plates, which are evenly distributed along the outer circumference of the tension support column.

[0014] Preferably, there are five tension support holes and five tension screws, and the five tension support holes are evenly distributed on the outer circumference of the clearance hole.

[0015] Preferably, the tension screw drive section is provided with a through auxiliary rotation hole.

[0016] Preferably, the inner hook-shaped surface of the locking section of the tension plate is a frosted surface.

[0017] The beneficial effects of this utility model are:

[0018] 1. By setting up puller components, tension support plates, and tension screws, the interaction of these three structures ensures that during gear disassembly, the disassembly tension directly acts on the end of the gear. The entire disassembly process will not touch the gear tooth surface, thus avoiding collisions and wear on the tooth surface and reducing maintenance costs.

[0019] Furthermore, depending on the actual length of the main shaft, different lengths of tension screws can be replaced, thus enabling the gear disassembly device to be used for disassembling gears in different models of screw blowers. It has few limitations, is not restricted by the length of the main shaft inside the blower, and has a wide range of applications.

[0020] 2. Since there are three first connecting plates, the three first connecting plates are evenly distributed along the outer circumference of the tension support column, and there are five tension support holes and five tension screws. The five tension support holes are evenly distributed on the outer circumference side of the clearance hole, which can ensure that the gear can be evenly stressed in the circumferential direction during disassembly, and avoid the gear from deforming during the pulling process. Attached Figure Description

[0021] Figure 1 This is a perspective view of the application of this utility model;

[0022] Figure 2 This is a perspective view of the application of this utility model;

[0023] Figure 3 This is a three-dimensional view of the puller assembly structure in this utility model;

[0024] Figure 4 This is a perspective view of the puller assembly without a tension screw in this utility model;

[0025] Figure 5 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0026] Figure 6 This is a three-dimensional view of the tension support plate in the figure of this utility model.

[0027] Explanation of symbols in the diagram:

[0028] 1. Puller assembly; 101. First connecting plate; 102. Second connecting plate; 103. Tension plate; 10301. Tension plate locking section; 10302. Tension plate connecting section; 10303. Tension plate adjusting section; 104. Tension support column; 105. Tension screw; 10501. Tension screw positioning section; 10502. Tension screw rotating connection section; 10503. Tension screw drive section; 10504. Auxiliary rotating hole; 106. Threaded hole; 2. Tension support plate; 201. Clearance hole; 202. Tension support hole; 3. Tension screw; 4. Gear; 5. Main shaft; 6. Hinge screw. Detailed Implementation

[0029] The present invention will be further described below with reference to the embodiments.

[0030] pass Figures 1-6 As can be seen, the gear disassembly device for the vehicle-mounted screw blower includes a puller assembly 1, a tension support plate 2, and a tension screw 3. A tension support column 104 is provided at the center of the puller assembly 1. The tension support column 104 is the main support component of the puller assembly 1. A first connecting plate 101 is provided on the outer circumference of the tension support column 104. There are multiple first connecting plates 101. A second connecting plate 102 is provided on the outer side of each of the multiple first connecting plates 101. The first connecting plate 101 and the second connecting plate 102 are rotatably connected on one side. A tension plate 103 is provided on the outer side of the second connecting plate 102. The other side of the second connecting plate 102 is rotatably connected to the tension plate 103. A hook-shaped structure is provided on one side of the tension plate 103. The hook-shaped structure can be locked to the outer circumference of the end face of the tension support plate 2.

[0031] The tension support column 104 has a threaded hole 106 at its center, and a tension screw 105 is provided inside the threaded hole 106. The outer circumference of the tension screw 105 is provided with external threads. The tension support column 104 and the tension screw 105 are connected by a threaded rotation. When the tension screw 105 is rotated, the tension support column 104 can move back and forth on the rotating tension screw 105 under the action of the internal and external threads.

[0032] The tension support plate 2 has a through clearance hole 201 at its center. The inner diameter of the clearance hole 201 is larger than the outer diameter of the main shaft 5 inside the screw blower. During the gear disassembly operation, the main shaft 5 needs to pass through the clearance hole 201 to complete the installation of the gear disassembly device.

[0033] The tension support plate 2 has multiple tension support holes 202 on the outer circumference of the clearance hole 201. The inner diameter of the tension support hole 202 is larger than the outer diameter of the screw shank of the tension screw 3, and smaller than the outer diameter of the nut of the tension screw 3. In this way, during the gear disassembly operation, the screw shank of the tension screw 3 can pass smoothly through the tension support hole 202, and the nut of the screw 3 can be limited to the end position of the tension support plate 2, thereby ensuring the rapid assembly of the gear disassembly device.

[0034] During gear disassembly, the screw of the tension screw 3 is used to lock and fix itself to the threaded hole at the end of the gear 4 inside the screw blower. Depending on the actual length of the main shaft 5, tension screws 3 of different lengths can be replaced accordingly. Thus, this gear disassembly device can be used for disassembling gears in different models of screw blowers, with minimal limitations.

[0035] The first connecting plate 101 has a through hole near its outer side, and the second connecting plate 102 has a through hole near the side of the first connecting plate 101. The first connecting plate 101 and the second connecting plate 102 are hinged together by hinge screws 6 passing through the holes in the first connecting plate 101 and the second connecting plate 102 respectively. The tension plate 103 consists of a tension plate locking section 10301, a tension plate connecting section 10302, and a tension plate adjusting section 10303. The tension plate locking section 10301 is located at the front of the tension plate 103, and the tension plate connecting section 10302 is located in the middle of the tension plate 103. The tension plate adjustment section 10303 is located at the rear of the tension plate 103. The tension plate locking section 10301 has a hook-shaped structure. During gear disassembly, the tension plate locking section 10301 is used to lock with the outer circumference of the end face of the tension support plate 2. The tension plate connecting section 10302 has a through hole in the middle. The second connecting plate 102 has a through hole on the side away from the first connecting plate 101. The second connecting plate 102 and the tension plate 103 are hinged and fixed by hinge screws 6 passing through the holes on the second connecting plate 102 and the tension plate connecting section 10302, respectively.

[0036] The hinge screws 6 are used for hinged fixation, which ensures the stability of the puller assembly 1 during use, while enabling quick disassembly and assembly, facilitating initial assembly and subsequent maintenance and repair, making the operation convenient and quick.

[0037] The tension screw 105 consists of a tension screw positioning section 10501, a tension screw rotating connection section 10502, and a tension screw driving section 10503. The tension screw positioning section 10501 is located at the front of the tension screw 105, the tension screw rotating connection section 10502 is located in the middle of the tension screw 105, and the tension screw driving section 10503 is located at the rear of the tension screw 105. The tension screw positioning section 10501 is tapered in shape. The tapered structure reduces the contact area between the front end of the tension screw positioning section 10501 and the end of the main shaft 5 during gear disassembly, forming point contact. This increases the rotational stability between the tension screw positioning section 10501 and the end of the main shaft 5 when the tension screw 105 rotates forward, preventing the problem of sliding displacement of the puller assembly 1.

[0038] The rotating connecting section 10502 of the tension screw is provided with an external thread, and the external shape of the driving section 10503 of the tension screw is polygonal. In this patent, the external shape of the driving section 10503 of the tension screw is hexagonal, which can increase the convenience of rotating the tension screw 105. For example, the external shape of the driving section 10503 of the tension screw can be clamped with pliers for rotation, or it can be fixed and rotated by an internal hex sleeve, or it can be rotated directly by hand. The operation is simple and the reliability is high.

[0039] There are three first connecting plates 101. The three first connecting plates 101 are evenly distributed along the outer circumference of the tension support column 104. The three first connecting plates 101 are respectively connected to three tension plates 103. Since the three tension plates 103 are evenly distributed along the outer circumference of the tension support column 104, the uniform force in the circumferential direction can be ensured during the gear disassembly process, thus avoiding the deformation of the gear 4 during the pulling process.

[0040] There are five tension support holes 202 and five tension screws 3. The five tension support holes 202 are evenly distributed on the outer circumference of the clearance hole 201. Setting the number of tension support holes 202 and tension screws 3 to five each is also to ensure that the gear 4 is evenly stressed in the circumferential direction during gear disassembly, and to avoid the gear 4 from deforming during the pulling process.

[0041] The tension screw drive section 10503 is provided with a through auxiliary rotation hole 10504. During gear disassembly, when the rotational resistance of the tension screw 105 is high, a long bar can be inserted into the auxiliary rotation hole 10504 for rotation, which saves time and effort, is convenient to operate, and has a significant improvement effect.

[0042] The inner hook-shaped surface of the tension plate locking section 10301 is frosted, which can increase the firmness of the locking between the tension plate locking section 10301 and the end position of the tension support plate 2 during gear disassembly.

[0043] The operating steps for this gear disassembly device are as follows:

[0044] (1) Pass the tension support plate 2 through the main shaft 5, which is located inside the clearance hole 201.

[0045] (2) Insert the tension screw 3 into the tension support hole 202 of the tension support plate 2, and lock the screw of the tension screw 3 to the threaded hole at the end of the gear 4.

[0046] (3) Unfold the tension plate 103 outward, and then snap the tension plate locking section 10301 on the tension plate 103 onto the outer end of the tension support plate 2.

[0047] (4) Screw in the tension screw 105 and press the tapered front end of the tension screw positioning section 10501 on the tension screw 105 against the end of the main shaft 5. At this time, the puller assembly 1, the tension support plate 2, the tension screw 3 and the gear 4 are all in a tensioned state.

[0048] (5) Continue to screw in the tension screw 105. The tension support column 104 is subjected to a reverse force and moves backward along the tension screw rotating connection section 10502 on the tension screw 105. At the same time as the tension screw rotating connection section 10502 moves backward, it drives the tension plate 103 to pull the tension support plate 2 backward. At the same time as the tension support plate 2 moves backward, it drives the tension screw 3 to move backward. At the same time as the tension screw 3 moves backward, it drives the gear 4 to move backward, and finally pulls out the gear 4 to complete the gear disassembly work.

[0049] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A gear disassembly device for a vehicle-mounted screw blower, characterized in that: The device includes a puller assembly, a tension support plate, and a tension screw. The puller assembly has a tension support column at its center. The tension support column has a first connecting plate on its outer circumference. There are multiple first connecting plates. A second connecting plate is provided on the outer side of each of the multiple first connecting plates. The first connecting plate and the second connecting plate are rotatably connected on one side. A tension plate is provided on the outer side of the second connecting plate. The other side of the second connecting plate is rotatably connected to the tension plate. A hook-shaped structure is provided on one side of the tension plate. The hook-shaped structure can be locked to the outer circumference of the end face of the tension support plate. The tension support column has a threaded hole at its center, and a tension screw is provided inside the threaded hole. The outer circumference of the tension screw is provided with external threads, so as to realize the threaded rotational connection between the tension support column and the tension screw. The tension support plate has a through clearance hole at its center. The tension support plate has multiple tension support holes on the outer circumference of the clearance hole. The inner diameter of the tension support hole is larger than the outer diameter of the tension screw, and the inner diameter of the tension support hole is smaller than the outer diameter of the tension screw nut.

2. The gear disassembly device for a vehicle-mounted screw blower according to claim 1, characterized in that: The first connecting plate has a through hole near the outer side, and the second connecting plate has a through hole near the side of the first connecting plate. The first connecting plate and the second connecting plate are hinged together by hinge screws passing through the holes in the first connecting plate and the second connecting plate respectively. The tension plate consists of a tension plate locking section, a tension plate connecting section, and a tension plate adjusting section. The tension plate locking section is located at the front of the tension plate, the tension plate connecting section is located in the middle of the tension plate, and the tension plate adjusting section is located at the rear of the tension plate. The tension plate locking section has a hook-shaped structure. The tension plate connecting section has a through hole in the middle, and the second connecting plate has a through hole on the side away from the first connecting plate. The second connecting plate and the tension plate are hinged and fixed by hinge screws passing through the holes in the second connecting plate and the tension plate connecting section, respectively.

3. The gear disassembly device for a vehicle-mounted screw blower according to claim 2, characterized in that: The tension screw consists of a tension screw positioning section, a tension screw rotating connection section, and a tension screw driving section. The tension screw positioning section is located at the front of the tension screw, the tension screw rotating connection section is located at the middle of the tension screw, and the tension screw driving section is located at the rear of the tension screw. The positioning section of the tension screw is tapered, the rotating connection section of the tension screw has external threads, and the driving section of the tension screw has a polygonal shape.

4. The gear disassembly device for a vehicle-mounted screw blower according to claim 3, characterized in that: There are three first connecting plates, which are evenly distributed along the outer circumference of the tension support column.

5. The gear disassembly device for a vehicle-mounted screw blower according to claim 4, characterized in that: The number of tension support holes and tension screws are both five, and the five tension support holes are evenly distributed on the outer circumference of the clearance hole.

6. The gear disassembly device for a vehicle-mounted screw blower according to claim 5, characterized in that: The tension screw drive section is provided with a through auxiliary rotation hole.

7. The gear disassembly device for a vehicle-mounted screw blower according to claim 6, characterized in that: The inner hook-shaped surface of the tension plate locking section is a frosted surface.

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