Spline shaft convenient to disassemble

Abstract

The utility model relates to the technical field of spline shafts, in particular to a spline shaft convenient to disassemble, which comprises two groups of connecting shaft bodies, an adjusting shaft component, a spline block, a connecting rod and an adjusting sleeve component, the adjusting shaft component is of a split structure, the connecting shaft bodies are symmetrically fixed at two ends of the adjusting shaft component, and a plurality of accommodating grooves are uniformly arranged on shaft bodies of the connecting shaft bodies. One end of the spline block can be limited in the containing groove, the connecting rod penetrates out of the two ends of the adjusting shaft assembly in the direction parallel to the axis of the adjusting shaft assembly, the end of the connecting shaft can penetrate through one end of the connecting shaft body to be connected to the spline block, and the adjusting sleeve assembly is limited to the adjusting shaft assembly and can surround the adjusting shaft assembly. The two ends of the adjusting shaft assembly penetrate through the connecting rod, the connecting pipe penetrates through one end of the connecting shaft body to limit the spline block in the containing groove, the adjusting sleeve assembly limits the adjusting sleeve assembly, and the spline block can be replaced after the connecting rod and the spline block are disconnected by disassembling the adjusting sleeve assembly.

Description

TECHNICAL FIELD

[0001] The utility model application relates to spline shaft technical field, concretely relates to a spline shaft convenient to disassemble. BACKGROUND

[0002] In the field of mechanical transmission, as the core component of torque transmission, the structure design of spline shaft directly affects the reliability and applicability of equipment. Traditional spline shaft usually adopts integral structure, which processes spline teeth and shaft body into a single part. Although it has certain transmission strength, it exposes significant defects when facing complex working conditions. The integral spline shaft is easy to fail due to local wear, corrosion or fatigue fracture. Since the spline teeth and the shaft body are inseparable, damage in one place often leads to the scrapping of the entire shaft, especially for customized spline shaft of large equipment, the replacement cost is higher. In the space-limited site environment, the design of such integral structure will further increase the operation difficulty and prolong the maintenance cycle.

[0003] In the Chinese authorized patent announcement No. CN218266761U, a spline detachable spline shaft is disclosed. A placing groove is provided on the second shaft rod. By aligning the spline with the placing groove on the second shaft rod, a clamping column and a spring are arranged in the placing groove. When the fixing column at the bottom of the spline is placed in the placing groove, the spring moves to clamp the spline, thereby completing the installation of the spline. However, the spline is pressed and clamped by the spring in the shaft body. If the spring is subjected to long-term compression and rebound load, it may appear elastic attenuation or fracture, leading to loosening or even falling off of the spline. Therefore, the utility model application provides a spline shaft convenient to disassemble. SUMMARY

[0004] To solve the above problems, a spline shaft convenient to disassemble is provided. By penetrating a connecting rod at both ends of the adjusting shaft assembly, the connecting rod penetrates the connecting shaft body and is connected to the spline block. When the spline block needs to be replaced, the spline block can be disassembled and replaced by separating the adjusting shaft assembly, solving the problem of loosening or falling off of the spline block by the spring.

[0005] To solve the problems of the prior art, the utility model application provides a spline shaft convenient to disassemble, which comprises two groups of connecting shaft bodies, adjusting shaft assemblies, spline blocks, connecting rods and adjusting sleeve assemblies. The adjusting shaft assembly is of split structure, the connecting shaft bodies are symmetrically fixed at both ends of the adjusting shaft assembly, a plurality of accommodating grooves are uniformly arranged on the shaft body of the connecting shaft body, one end of the spline block can be limited in the accommodating groove, the connecting rod penetrates both ends of the adjusting shaft assembly along the axis direction parallel to the adjusting shaft assembly, the end of the connecting shaft can penetrate one end of the connecting shaft body and be connected to the spline block, and the adjusting sleeve assembly is limited on the adjusting shaft assembly and can surround the adjusting shaft assembly.

[0006] Preferably, the spline block is provided with a connecting hole, and the connecting rod can extend into the connecting hole.

[0007] Preferably, the adjusting shaft assembly comprises a left disc, a right disc, fixed sector petals and movable sector petals, the left disc is coaxially arranged with the right disc, two groups of the connecting shaft bodies are fixed on the left disc and the right disc respectively, three groups of the fixed sector petals are fixed on the right side of the left disc, the included angle between the two side faces of the fixed sector petals is 60°, one of the movable sector petals is movably connected between two adjacent fixed sector petals, the included angle between the two side faces of the three movable sector petals is 60°, and one end of the three groups of movable sector petals is limited on the right disc, and the connecting rod can penetrate through the three groups of movable sector petals.

[0008] Preferably, the movable sector petals are movably connected to the right disc, the movable sector petals are provided with a waist-shaped through hole, the connecting rod is limited in the waist-shaped through hole, and the three groups of movable sector petals can move radially along the right disc.

[0009] Preferably, the adjusting sleeve assembly comprises two groups of first shaft sleeves, two groups of second shaft sleeves and a plurality of groups of bolts, the two first shaft sleeves are symmetrically arranged and surround the left disc, the two groups of second shaft sleeves are symmetrically arranged and surround the right disc, one end of the second shaft sleeve can surround one end of the first shaft sleeve, the bolts are used for connecting the two groups of first shaft sleeves, and the bolts are used for connecting the two groups of second shaft sleeves.

[0010] Preferably, one end of the first shaft sleeve away from the left disc is provided with a first protrusion, one end of the second shaft sleeve away from the right disc is provided with a second protrusion, the second protrusion can contact the outer wall of the first shaft sleeve, the second protrusion can contact the first protrusion, and the first shaft sleeve and the second shaft sleeve can axially move relative to the adjusting shaft assembly.

[0011] Preferably, a rubber ring is arranged on the contact surface of the first protrusion and the second protrusion.

[0012] Preferably, an oil injection hole is arranged on the left disc, and the oil injection hole can be connected to the connecting rod.

[0013] Compared with the prior art, the utility model application has the beneficial effects that:

[0014] The connecting rod penetrates through the adjusting shaft assembly at both ends, the connecting rod is connected to the spline block through the connecting shaft body, when the spline block needs to be replaced, the spline block can be disassembled and replaced by separating the adjusting shaft assembly, compared with the traditional spline block limited on the connecting shaft body through the spring, the service life of the structure is longer.

[0015] By setting the adjusting shaft assembly as a split structure, the adjusting sleeve assembly surrounds the adjusting shaft assembly, so that the spline shaft can have moving space in the axial direction, so as to eliminate the influence of thermal expansion and cold shrinkage on the spline shaft. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a kind of spline shaft of the overall structure schematic diagram of the utility model for easy disassembly.

[0017] Figure 2 is the exploded structure schematic diagram of the utility model for easy disassembly spline shaft (remove adjusting sleeve assembly) Figure 1 .

[0018] Figure 3 is the exploded structure schematic diagram of the utility model for easy disassembly spline shaft (remove adjusting sleeve assembly) Figure 2 .

[0019] Figure 4 is the connecting structure schematic diagram of the adjusting shaft assembly of the utility model for easy disassembly spline shaft and one connecting shaft body.

[0020] Figure 5 is Figure 4 the node A enlarged view.

[0021] Figure 6 is Figure 4 the node B enlarged view.

[0022] In the drawing, reference numerals are: connecting shaft body 1, accommodating groove 10, adjusting shaft assembly 2, left wheel disc 20, oil injection hole 200, right wheel disc 21, fixed fan-shaped petal 22, movable fan-shaped petal 23, waist-shaped through hole 230, spline block 3, connecting rod 4, adjusting sleeve assembly 5, first shaft sleeve 50, first protrusion 500, second shaft sleeve 51, second protrusion 510. DETAILED DESCRIPTION

[0023] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model is described in further detail below in combination with the drawings and specific embodiments.

[0024] As Figures 1-6As shown, the utility model provides a kind of spline shaft of convenient disassembly, including two groups of connecting shaft body 1, adjusting shaft assembly 2, spline block 3, connecting rod 4 and adjusting sleeve assembly 5, adjusting shaft assembly 2 is split structure, adjusting shaft assembly 2 two ends symmetrical fixed connection shaft body 1, several containing grooves 10 are evenly provided on the shaft of connecting shaft body 1, spline block 3 one end can be limited in containing groove 10, connecting rod 4 is penetrated out the two ends of adjusting shaft assembly 2 along the axis direction parallel to adjusting shaft assembly 2, the end of connecting shaft can be penetrated one end of connecting shaft body 1 and be connected on spline block 3, adjusting sleeve assembly 5 is limited on adjusting shaft assembly 2 and can surround adjusting shaft assembly 2.By adjusting shaft assembly 2 two ends penetrating connecting rod 4, connecting pipe penetrates one end of connecting shaft body 1 and limits spline block 3 in containing groove 10, by adjusting sleeve assembly 5 limiting adjusting sleeve assembly 5, in the spline shaft of convenient disassembly provided in the scheme, by disassembling adjusting sleeve assembly 5, after connecting rod 4 and spline block 3 are disconnected, the replacement of spline block 3 can be realized.

[0025] Connecting hole is provided on spline block 3, and connecting rod 4 can extend into the connecting hole. By opening processing on spline block 3, connecting rod 4 limits spline block 3 in containing groove 10, and spline block 3 will not move radially or axially relative to connecting shaft body 1 during use, thereby increasing the stability of connection.

[0026] Adjusting shaft assembly 2 includes left disc 20, right disc 21, fixed scallop 22 and movable scallop 23. Left disc 20 is coaxially arranged with right disc 21. Two groups of connecting shaft bodies 1 are fixed on left disc 20 and right disc 21 respectively. Three groups of fixed scallops 22 are fixed on the right side of left disc 20 in equal parts. The included angle between the two side faces of fixed scallop 22 is 60°. A movable scallop 23 is movably connected between two adjacent fixed scallops 22. The included angle between the two side faces of three movable scallops 23 is 60°. One end of three groups of movable scallops 23 is limited on right disc 21. Connecting rod 4 can penetrate three groups of movable scallops 23. Figures 2-3 As shown, fixed scallop 22 and movable scallop 23 are closely connected on the side, so as to maintain the radial accuracy of the spline shaft. Figure 4 As shown, connecting rod 4 penetrates three groups of movable scallops 23. In adjusting shaft assembly 2, movable scallop 23 can be elongated or shortened in the axial direction due to factors such as thermal expansion and contraction. In turn, the adaptability of the spline shaft is improved.

[0027] Movable scallop 23 is movably connected to right disc 21. Movable scallop 23 is provided with a waist-shaped through hole 230. Connecting rod 4 is limited in waist-shaped through hole 230. Three groups of movable scallops 23 can move radially along right disc 21. Figure 6As shown, the waist-shaped through hole 230 on the movable sector 23 can cause the movable sector 23 to be displaced along the radial direction of the spline shaft, so that the spline shaft can allow the deformation space when affected by the external environment.

[0028] The adjusting sleeve assembly 5 includes two sets of first shaft sleeves 50, two sets of second shaft sleeves 51, and a plurality of sets of bolts. The two sets of first shaft sleeves 50 are symmetrically arranged and surround the left disc 20, the two sets of second shaft sleeves 51 are symmetrically arranged and surround the right disc 21, one end of the second shaft sleeve 51 can surround one end of the first shaft sleeve 50, and the bolts are used to connect the two sets of first shaft sleeves 50 and the bolts are used to connect the two sets of second shaft sleeves 51. The adjusting sleeve assembly 5 is used to connect the components of the spline shaft to form a whole, wherein the end of the first shaft sleeve 50 away from the left disc 20 can contact the end of the movable sector 23, the end of the second shaft sleeve 51 away from the right disc 21 is sleeved on the first shaft sleeve 50, when the spline shaft is affected by thermal expansion and cold shrinkage, the adjusting shaft assembly 2 can produce a certain movement in the axial direction, so that the second shaft sleeve 51 and the first shaft sleeve 50 have a certain distance relative sliding, so as to maintain the connection accuracy of the spline shaft, and when the movable sector 23 moves and drives the adjusting sleeve assembly 5 to expand, the first shaft sleeve 50 and the second shaft sleeve 51 can be compressed on the adjusting shaft assembly 2 by repeatedly screwing the bolts.

[0029] The end of the first shaft sleeve 50 away from the left disc 20 is provided with a first protrusion 500, and the end of the second shaft sleeve 51 away from the right disc 21 is provided with a second protrusion 510. The second protrusion 510 can contact the outer wall of the first shaft sleeve 50, and the second protrusion 510 can contact the first protrusion 500. The first shaft sleeve 50 and the second shaft sleeve 51 can move axially relative to the adjusting shaft assembly 2. The first protrusion 500 and the second protrusion 510 can limit the movement range of the spline shaft, and preferably a rubber ring is arranged on the contact surface of the first protrusion 500 and the second protrusion 510. When the spline shaft is assembled, the first protrusion 500 and the second protrusion 510 contact the rubber ring. When the spline shaft is elongated due to high temperature, the first protrusion 500 and the second protrusion 510 move away from each other, and the first protrusion 500 and the second protrusion 510 compress and deform the rubber ring. When the external environment stabilizes, the deformation amount of the rubber ring decreases. The device can move axially under the influence of thermal expansion and cold shrinkage, which greatly increases the adaptability of the device. The split structure facilitates the replacement and maintenance of local parts.

[0030] The left disc 20 is provided with an oil injection hole 200, which can be connected to the connecting rod 4. Figure 5As shown, the oil injection hole 200 is connected to the connecting rod 4, and oil is injected into the oil injection hole 200. Since the connecting hole can be penetrated and connected to the spline block 3 at both ends, the oil in the oil injection hole 200 can enter the connecting gap between the connecting rod 4 and the connecting shaft body 1 and the adjusting shaft assembly 2. At the same time, the oil in the oil injection hole 200 can enter the connecting surface between the movable sector 23 and the fixed sector 22. Injecting oil into the oil injection hole 200 can oil seal the spline shaft, thereby reducing the influence of the external environment on the spline shaft and reducing the corrosion of the parts caused by air.

[0031] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A spline shaft which is easily disassembled, characterized by, The application relates to a connecting shaft body (1), an adjusting shaft assembly (2), a spline block (3), a connecting rod (4) and an adjusting sleeve assembly (5), the adjusting shaft assembly (2) is of a split structure, the adjusting shaft assembly (2) is symmetrically fixed at two ends of the connecting shaft body (1), a plurality of accommodating grooves (10) are uniformly arranged on the shaft body of the connecting shaft body (1), one end of the spline block (3) can be limited in the accommodating grooves (10), the connecting rod (4) penetrates through two ends of the adjusting shaft assembly (2) along the axial direction of the adjusting shaft assembly (2), the end of the connecting shaft can penetrate one end of the connecting shaft body (1) and be connected to the spline block (3), and the adjusting sleeve assembly (5) is limited on the adjusting shaft assembly (2) and can surround the adjusting shaft assembly (2).

2. A splined shaft for easy disassembly according to claim 1, characterized in that Connecting holes are arranged on the spline block (3), and the connecting rod (4) can extend into the connecting holes.

3. A splined shaft for easy disassembly according to claim 1, wherein The adjusting shaft assembly (2) comprises a left wheel disc (20), a right wheel disc (21), fixed sector petals (22) and movable sector petals (23), the left wheel disc (20) and the right wheel disc (21) are coaxially arranged, two groups of the connecting shaft bodies (1) are fixed on the left wheel disc (20) and the right wheel disc (21) respectively, three groups of the fixed sector petals (22) are fixed on the right side of the left wheel disc (20) in equal parts, the included angle between the two side faces of the fixed sector petals (22) is 60 DEG, one of the movable sector petals (23) is movably connected between two adjacent fixed sector petals (22), the included angle between the two side faces of the three movable sector petals (23) is 60 DEG, one end of the three groups of movable sector petals (23) is limited on the right wheel disc (21), and the connecting rod (4) can penetrate through the three groups of movable sector petals (23).

4. A splined shaft for easy disassembly according to claim 3, wherein The movable sector petals (23) are movably connected on the right wheel disc (21), the movable sector petals (23) are provided with waist-shaped through holes (230), the connecting rod (4) is limited in the waist-shaped through holes (230), and the three groups of movable sector petals (23) can move along the radial direction of the right wheel disc (21).

5. A splined shaft for easy disassembly according to claim 4, wherein The adjusting sleeve assembly (5) comprises two groups of first shaft sleeves (50), two groups of second shaft sleeves (51) and a plurality of groups of bolts, the two first shaft sleeves (50) are symmetrically arranged and surround the left wheel disc (20), the two groups of second shaft sleeves (51) are symmetrically arranged and surround the right wheel disc (21), one end of the second shaft sleeve (51) can surround one end of the first shaft sleeve (50), the bolts are used for connecting the two groups of first shaft sleeves (50), and the bolts are used for connecting the two groups of second shaft sleeves (51).

6. A splined shaft for easy disassembly according to claim 5, wherein The first shaft sleeve (50) is provided with a first protrusion (500) at one end away from the left wheel disc (20), the second shaft sleeve (51) is provided with a second protrusion (510) at one end away from the right wheel disc (21), the second protrusion (510) can contact the outer wall of the first shaft sleeve (50), the second protrusion (510) can contact the first protrusion (500), and the first shaft sleeve (50) and the second shaft sleeve (51) can move axially relative to the adjusting shaft assembly (2).

7. A splined shaft for easy disassembly according to claim 6, characterized in that A rubber ring is arranged on the contact surface of the first protrusion (500) and the second protrusion (510).

8. A splined shaft for easy disassembly according to claim 3, wherein An oil injection hole (200) is arranged on the left wheel disc (20), and the oil injection hole (200) can be connected to the connecting rod (4) in a penetrating manner.

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