Floating connection structure

Abstract

The utility model relates to the field of shaft body connection, in particular to a floating connection structure which comprises a connecting shaft, a connecting piece, an assembling shaft, an assembling piece, a hoop and an elastic piece, the connecting piece is connected to the periphery of the connecting shaft, the assembling piece is connected to the periphery of the assembling shaft, the hoop is provided with an embedding groove, and the connecting piece, the assembling piece and the elastic piece are all embedded in the embedding groove. Under the condition that the connecting shaft and the assembling shaft have the tendency of relative deflection (the included angle between the axes of the connecting shaft and the assembling shaft is increased), the deviation is automatically compensated through elastic deformation of the elastic piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shaft body connection, in particular to a floating connection structure. BACKGROUND

[0002] The file with the existing publication number CN108087263A discloses a pulsating adjustable plunger pump, which comprises a pump body and a pump head. A crankshaft is arranged in the pump body, and the crankshaft is connected with a plunger through a connecting rod. The pump head is connected to the pump body, and the plunger extends into the plunger cavity of the pump head.

[0003] The connecting rod and the plunger are assembled, and the pump head and the pump body are also assembled. The machining and assembly of the parts may cause an angle deviation between the plunger and the plunger cavity, resulting in poor operation of the plunger pump. CONTENT OF THE UTILITY MODEL

[0004] In order to realize automatic compensation of the deviation, the present application provides a floating connection structure.

[0005] The floating connection structure provided by the present application adopts the following technical scheme:

[0006] A floating connection structure comprises a connecting shaft, a connecting piece, an assembling shaft, an assembling piece, a clamp and an elastic piece,

[0007] The connecting piece is connected to the outer periphery of the connecting shaft,

[0008] The assembling piece is connected to the outer periphery of the assembling shaft,

[0009] The clamp is provided with a slot,

[0010] The connecting piece, the assembling piece and the elastic piece are all embedded in the slot.

[0011] Through the above technical scheme, in the case that the connecting shaft and the assembling shaft have a relative deflection (the angle between the two shafts increases) trend, the elastic deformation of the elastic piece can automatically compensate the deviation.

[0012] Preferably, the connecting piece is annular, and the connecting piece is coaxially connected to the outer periphery of the connecting shaft.

[0013] Through the above technical scheme, in the case that the connecting shaft and the assembling shaft have a relative deflection (the angle between the two shafts increases) trend in any direction, the automatic compensation of the deviation can be realized.

[0014] Preferably, the assembling piece is annular, and the assembling piece is coaxially connected to the outer periphery of the assembling shaft.

[0015] Through the above technical scheme, in the case that the connecting shaft and the assembling shaft have a relative deflection (the angle between the two shafts increases) trend in any direction, the automatic compensation of the deviation can be realized.

[0016] Preferably, the elastic member comprises a disc spring, and the disc spring is sleeved outside the assembly shaft.

[0017] By using the above technical scheme, compared with a spiral spring, the disc spring is more uniform in stress and deformation in each direction, and is beneficial to realize automatic compensation of relative deflection in any direction.

[0018] Preferably, the disc spring is provided with two disc springs, and the diameters of the two disc springs are opposite to each other.

[0019] By using the above technical scheme, pre-tightening is facilitated, and the relative deflection of the connecting shaft and the assembly shaft is avoided; and under the condition of no external force, the axes of the connecting shaft and the assembly shaft are coincident or parallel.

[0020] Preferably, the clamp spring is further provided with a clamping groove.

[0021] The clamp is in the shape of a fan ring, the central angle of the clamp is an obtuse angle or a straight angle, the clamp is provided with a clamping groove, and the clamp is provided with two,

[0022] The clamp spring is sleeved outside the clamp, and the clamp spring is embedded in the clamping groove.

[0023] By using the above technical scheme, axial and radial limiting between the connecting shaft and the assembly shaft is realized.

[0024] Preferably, the central angle of the clamp is a straight angle.

[0025] By using the above technical scheme, the two clamps are adhered to each other, and the movement of the clamp is avoided.

[0026] Preferably, one end surface of the connecting shaft is provided with a groove, and one end of the assembly shaft extends into the groove.

[0027] By using the above technical scheme, radial limiting between the connecting shaft and the assembly shaft is realized.

[0028] Preferably, the clamp spring is further provided with a clamping groove.

[0029] By using the above technical scheme, the clamp spring can be made of wear-resistant material to ensure the service life.

[0030] Preferably, the assembly shaft comprises a shaft body and a sleeve barrel,

[0031] One end of the shaft body is coaxially embedded in the sleeve barrel, and the assembly member is connected to the outer periphery of the sleeve barrel.

[0032] By using the above technical scheme, the sleeve barrel can be made of wear-resistant material to ensure the service life.

[0033] In summary, the present application has at least one of the following beneficial technical effects:

[0034] 1. In the case that the connecting shaft and the assembly shaft have a tendency of relative deflection (the angle between the two shafts increases), the elastic deformation of the elastic member is used to automatically compensate for the deviation;

[0035] 2. The disc spring is deformed more uniformly in each direction, which is beneficial to automatically compensate for the relative deflection in any direction. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic view of a floating connection structure.

[0037] Figure 2 is a schematic view of a cross section of the floating connection structure.

[0038] Reference signs: 1, connecting shaft; 11, groove; 2, connecting member; 3, assembly shaft; 31, shaft body; 32, sleeve barrel; 4, assembly member; 5, gasket; 6, clamp; 61, clamping groove; 62, embedding groove; 7, clamping spring; 8, elastic member. DETAILED DESCRIPTION

[0039] The application will be further described in detail below with reference to the accompanying drawings.

[0040] Reference Figure 1 and Figure 2 , the embodiment of the application discloses a floating connection structure, which comprises a connecting shaft 1 and a connecting member 2.

[0041] The connecting member 2 is annular, the connecting member 2 is coaxially connected to the outer periphery of one end of the connecting shaft 1, the surface of the connecting member 2 is flush with the surface of the one end of the connecting shaft 1, and the one end surface of the connecting shaft 1 is coaxially provided with a groove 11.

[0042] The floating connection structure further comprises an assembly shaft 3 and an assembly member 4. The assembly shaft 3 comprises a shaft body 31 and a sleeve barrel 32.

[0043] One end of the sleeve barrel 32 is provided with an opening, one end of the shaft body 31 is coaxially embedded in the opening of the sleeve barrel 32, and the outer periphery of the shaft body 31 can be in interference fit with the inner periphery of the sleeve barrel 32.

[0044] The assembly member 4 is annular, and the assembly member 4 is coaxially connected to the outer periphery of the sleeve barrel 32. Along the axial direction of the sleeve barrel 32, the assembly member 4 is located in the middle part of the sleeve barrel 32.

[0045] The other end of the sleeve barrel 32 is used for embedding in the groove 11 of the connecting shaft 1, and there is a gap between the outer periphery of the sleeve barrel 32 and the groove wall of the groove 11.

[0046] The floating connection structure further comprises a gasket 5. The gasket 5 is embedded in the groove 11, and the other end surface of the sleeve barrel 32 is a spherical surface, the spherical center of the spherical surface coincides with the axis of the sleeve barrel 32, and the spherical surface is used for abutting against the gasket 5.

[0047] At the same time, the spherical interference pad 5, the sleeve barrel 32 axis and the connecting shaft 1 axis coincide or parallel, the gap exists between the assembly 4 and the connecting piece 2.

[0048] The floating connection structure further comprises a clamp 6, a clasp 7 and an elastic member 8.

[0049] The clamp 6 is provided with two, the clamp 6 is in the form of a fan ring, and the central angle of the clamp 6 is obtuse or straight. In the embodiment: the central angle of the clamp 6 is straight.

[0050] The surface of the clamp 6 away from the center of the circle is provided with a coaxial clamping groove 61. The clasp 7 is sleeved outside the clamp 6, and the clasp 7 is embedded in the clamping groove 61.

[0051] The surface of the clamp 6 towards the center of the circle is provided with a coaxial embedding groove 62. The connecting piece 2, the assembly 4 and the elastic member 8 are all embedded in the embedding groove 62.

[0052] In the embodiment: the elastic member 8 comprises a disc spring, the disc spring is sleeved outside the sleeve barrel 32, and the disc spring is located on the side of the assembly 4 away from the connecting piece 2; the disc spring is provided with three groups, the number of disc springs in each group is two, and the diameters of the two disc springs in any group are opposite.

[0053] The implementation principle of the floating connection structure in the embodiment of the application is: in the case that the connecting shaft 1 and the assembly shaft 3 have a relative deflection (the angle between the two axes increases) trend, the elastic deformation of the elastic member 8 is used to automatically compensate the deviation.

[0054] The above are the preferred embodiments of the application, and are not limited to the protection scope of the application, so: any equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A floating connection structure, characterized in that, It includes a connecting shaft (1), a connector (2), an assembly shaft (3), an assembly part (4), a clamp (6), and an elastic element (8). The connector (2) is connected to the outer periphery of the connecting shaft (1). The assembly (4) is connected to the outer periphery of the assembly shaft (3). The clamp (6) is provided with a groove (62). The connector (2), the mounting part (4), and the elastic part (8) are all embedded in the groove (62).

2. The floating connection structure according to claim 1, characterized in that, The connector (2) is ring-shaped and is coaxially connected to the outer periphery of the connecting shaft (1).

3. The floating connection structure according to claim 1, characterized in that, The assembly (4) is ring-shaped and is coaxially connected to the outer periphery of the assembly shaft (3).

4. The floating connection structure according to claim 1, characterized in that, The elastic element (8) includes a disc spring, which is sleeved outside the assembly shaft (3).

5. The floating connection structure according to claim 4, characterized in that, The disc spring is provided in two parts, with the larger diameter ends of the two disc springs facing away from each other.

6. The floating connection structure according to claim 1, characterized in that, It also includes snap rings (7). The clamp (6) is fan-shaped, and the central angle of the clamp (6) is an obtuse angle or a straight angle. The clamp (6) is provided with a groove (61), and there are two clamps (6). The snap ring (7) is fitted over the clamp (6) and is embedded in the slot (61).

7. The floating connection structure according to claim 6, characterized in that, The central angle of the clamp (6) is a straight angle.

8. The floating connection structure according to claim 1, characterized in that, The connecting shaft (1) has a groove (11) on one end surface, and one end of the assembly shaft (3) extends into the groove (11).

9. The floating connection structure according to claim 8, characterized in that, It also includes a liner (5) located within a groove (11).

10. The floating connection structure according to claim 1, characterized in that, The assembly shaft (3) includes a shaft body (31) and a sleeve (32). One end of the shaft (31) is coaxially embedded in the sleeve (32), and the fitting (4) is connected to the outer periphery of the sleeve (32).

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