Telescopic cross-shaped universal shaft structure capable of preventing axial movement

Abstract

The utility model provides a telescopic cross-shaped universal shaft structure capable of preventing axial movement. The telescopic cross-shaped cardan shaft structure capable of preventing axial movement comprises two spline shafts and a cross-shaped cardan shaft, the first housing is connected with the corresponding spline shaft, and a spline groove is formed in the first housing; the second housing is connected with the corresponding spline shaft; the spline housing is arranged on the spline groove; a plurality of connecting holes are formed in the first housing, the connecting holes are respectively screw holes and counter bores, the directions of the screw holes need to be axially symmetrical, and two seams are formed in the first housing in the axial direction; and a locking bolt is arranged on the housing 1. The telescopic cross-shaped cardan shaft structure capable of preventing axial movement has the advantages that the structure is simple, the telescopic cross-shaped cardan shaft structure can be tightly held with a transition sleeve, so that the transition sleeve does not generate axial displacement, and grease in a spline pair can be prevented from being exposed, so that oil shortage of the spline pair and pollution to the external environment caused by the grease in the spline pair can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical transmission part technical field, especially relate to a telescopic cross universal shaft structure of preventing axial stringing. BACKGROUND

[0002] Telescopic cross universal shaft is commonly used in rolling machinery, hoisting and transporting machinery and other heavy machinery, and is a commonly used coupling of transmission shaft system connecting two different shafts, and the core transmission relies on the outer spline of spline shaft and the inner spline of spline sleeve, and a spline pair with clearance fit is formed, and the axial sliding of the spline pair meets the function of axial stringing, and the spline tooth side clearance is large in order to ensure telescopic flexibility, and the tooth side clearance also increases with the increase of the specification.

[0003] When the universal shaft is in idle or small torque operation, slight vibration of the equipment caused by axial stringing may occur even if the overall dynamic balance of the coupling meets the demand, which may affect other equipment.

[0004] Therefore, it is necessary to provide a new telescopic cross universal shaft structure of preventing axial stringing to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of providing a telescopic cross universal shaft structure of preventing axial stringing, which has a simple structure, can be tightly held with the transition sleeve, does not produce axial displacement, can avoid the exposure of grease in the spline pair, and can prevent the lack of oil in the spline pair and the pollution of the external environment.

[0006] To solve the above technical problems, the telescopic cross universal shaft structure of preventing axial stringing provided by the utility model comprises two spline shafts;

[0007] A cover shell one is connected with the corresponding spline shaft, and a spline groove is formed on the cover shell one;

[0008] A cover shell two is connected with the corresponding spline shaft;

[0009] A spline sleeve is arranged on the spline groove;

[0010] A plurality of connecting holes are formed on the cover shell one, the connecting holes are screw holes and counterbores, the screw holes are axially symmetrical, and two seams are arranged on the cover shell one in the axial direction;

[0011] A locking bolt is arranged on the cover shell one, the locking bolt passes through the screw hole and contacts the cover shell two to form extrusion fixation, and an anti-loosening washer is arranged between the cover shell one and the locking bolt.

[0012] As a further scheme of the utility model, the transition groove is communicated with the spline groove, and the transition sleeve is arranged on the transition groove.

[0013] As a further scheme of the utility model, the transition sleeve and the spline shaft adopt interference fit, and the outer circle of the transition sleeve and the inner hole of the spline sleeve adopt clearance fit.

[0014] As a further scheme of the utility model, the size length of the transition sleeve is slightly smaller than the inner hole depth of the spline sleeve, and the outer circle right side of the transition sleeve is designed as a guide angle, thereby facilitating installation.

[0015] As a further scheme of the utility model, two waist-shaped hole windows are symmetrically arranged on the cover shell two, and the windows are sealed by the sealing cover.

[0016] As a further scheme of the utility model, the sealing cover is made of rubber material, and the sealing cover and the cover shell two are connected and fixed by the locking hoop.

[0017] Compared with the related art, the utility model has the following beneficial effects:

[0018] 1. The utility model has simple structure, can tightly hold the transition sleeve, avoids axial displacement, avoids the grease in the spline pair from being exposed, and avoids the pollution of the spline pair and the external environment. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to facilitate the understanding of those skilled in the art, the utility model is further described below with reference to the drawings.

[0020] Figure 1 Structure diagram of the utility model Figure 1 ;

[0021] Figure 2 Structure diagram of the utility model Figure 2 ;

[0022] Figure 3 Assembly diagram of the spline shaft and the cover shell two in the utility model;

[0023] Figure 4 Assembly diagram of the spline shaft and the cover shell one in the utility model;

[0024] Figure 5 Assembly diagram of the spline shaft and the locking bolt in the utility model.

[0025] In the figure: 101, cover one; 102, cover two; 1, spline shaft; 2, spline sleeve; 3, transition sleeve; 4, locking bolt; 5, anti-loosening washer; 6, sealing cover; 7, locking hoop; 8, window; 9, connecting hole. DETAILED DESCRIPTION

[0026] Please refer to Figures 1 to 5 , wherein, Figure 1 is the structure diagram of the utility model Figure 1 ; Figure 2 is the structure diagram of the utility model Figure 2 ; Figure 3 is the assembly diagram of spline shaft and cover two in the utility model; Figure 4 is the assembly diagram of spline shaft and cover one in the utility model; Figure 5 is the assembly diagram of spline shaft and locking bolt in the utility model. The anti-axial stringing telescopic cross universal shaft structure includes two spline shafts 1;

[0027] Cover one 101, the cover one 101 is connected with corresponding spline shaft 1, spline groove is set up on the cover one 101;

[0028] Cover two 102, the cover two 102 is connected with corresponding spline shaft 1;

[0029] Spline sleeve 2, the spline sleeve 2 is arranged on the spline groove;

[0030] A plurality of connecting holes 9 are set up on the cover one 101, and the plurality of connecting holes 9 are respectively threaded hole and counterbore, the threaded hole direction needs axial symmetry, the cover one 101 is provided with two seams in the axial direction;

[0031] Locking bolt 4 is arranged on the cover one 101, the locking bolt 4 passes through the threaded hole and is in contact with cover two 102 to form extrusion fixing, the anti-loosening washer 5 is arranged between the cover one 101 and the locking bolt 4.

[0032] Transition groove is set up on the cover one 101, the transition groove is communicated with the spline groove, transition sleeve 3 is arranged on the transition groove, a section of inner hole is set up in the spline sleeve 2, and the inner hole is concentric with the inner spline on the transition sleeve 3.

[0033] The inner spline of the transition sleeve 3 and the outer spline of the spline shaft 1 adopt interference fit, and the outer circle of the transition sleeve 3 and the inner hole of the spline sleeve 2 adopt clearance fit.

[0034] The size length of the transition sleeve 3 is slightly smaller than the inner hole depth of the spline sleeve 2, and the right side of the outer circle of the transition sleeve 3 is designed as a guide angle, so that installation is facilitated.

[0035] The two waist-shaped holes of the window 8 are symmetrically arranged on the shell 102, and the window 8 is sealed by an outer circular wrapping of the sealing cover 6.

[0036] The sealing cover 6 is made of rubber, and the sealing cover 6 is connected and fixed with the shell 102 through the locking hoop 7.

[0037] The inner hole is concentric with the inner spline, the inner hole of the spline sleeve 2 and the outer circle of the transition sleeve 3 are in clearance fit, the spline sleeve 2 is designed and processed in the axial direction, and two slits are designed and processed in the radial direction, and then the locking bolt 4 is tightened, the slit of the spline sleeve 2 is contracted, the elastic deformation size of the inner hole diameter size is reduced, and the spline sleeve 2 is wrapped on the outer circle of the transition sleeve 3, so that the spline sleeve 2 is tightly held with the transition sleeve 3, and the spline sleeve 2 does not produce axial displacement;

[0038] The inner spline of the transition sleeve 3 and the outer spline of the spline shaft 1 are in interference fit, and need to be hot-mounted during installation, and after cooling, the transition sleeve 3 and the spline shaft 1 are tightly held together, and then through the interference mode, the spline shaft 1 and the transition sleeve 3 will not produce axial displacement, and the length of the transition sleeve 3 is slightly smaller than the inner hole depth of the spline sleeve 2.

[0039] The window 8 is wrapped with the outer circle of the sealing cover 6, and then fixed with the locking hoop 7, and the sealing cover 6 and the locking hoop 7 are used as a cover for the spline shaft 1, so that the oil in the spline pair is not exposed due to the open window, thereby preventing the spline pair from lacking oil and being polluted by the external environment.

[0040] It should be noted that the device structure and the drawings of the utility model mainly describe the principle of the utility model, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the design principle technology, and under the premise that the above-mentioned principle of the utility model is understood by the person skilled in the art, the specific of the power mechanism, the power supply system and the control system can be clearly known, and the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the person skilled in the art;

[0041] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, and the mechanical parts and equipment adopt the conventional type in the prior art, and the components known by the person skilled in the art are known by the person skilled in the art through technical manual or conventional experimental method.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations or direct or indirect application can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents, and the same is true for the patent protection scope of the utility model.

Claims

1. A telescopic universal joint structure for preventing axial movement, characterized in that, Include: Two spline shafts; Cover one, the cover one is connected with corresponding spline shaft, spline groove is set up on the cover one; Cover two, the cover two is connected with corresponding spline shaft; Spline cover, the spline cover is set on the spline groove; A plurality of connecting holes are set up on the cover one, a plurality of connecting holes are screw holes and counterbores respectively, the screw hole direction needs axial symmetry, two seams are set up on the cover one in the axial direction; Locking bolts are set up on the cover one, the locking bolts pass through the screw holes and contact with the cover two to form extrusion fixing, the anti-loose washer is set between the cover one and the locking bolt.

2. The anti-axial-flexing telescopic cross shaft structure according to claim 1, characterized in that: A transition groove is set up on the cover one, the transition groove is communicated with the spline groove, a transition sleeve is set on the transition groove, an inner hole is set in the inside of the spline cover, the inner hole is concentric with the inner spline on the transition sleeve.

3. The anti-axial-flexing telescopic cross shaft structure according to claim 2, characterized in that: The inner spline of the transition sleeve and the outer spline of the spline shaft adopt interference fit, the outer circle of the transition sleeve and the inner hole of the spline cover adopt clearance fit.

4. The anti-axial-flexing telescoping cross shaft structure according to claim 2, characterized in that: The size length of the transition sleeve is slightly smaller than the inner hole depth of the spline cover, the right side of the outer circle of the transition sleeve is designed as a guide angle, thereby facilitating installation.

5. The anti-axial-flexing telescoping cross shaft structure according to claim 1, characterized in that: Two waist hole windows are symmetrically set on the cover two, the windows are sealed by setting the sealing cover.

6. The anti-axial-flexing telescoping cross shaft structure according to claim 5, characterized in that: The sealing cover is made of rubber material, the sealing cover is connected and fixed with the cover two through the locking hoop.

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