Flexible phase-adjustable cardan shaft clamping device

Abstract

The utility model discloses a flexible phase-adjustable cardan shaft clamping device which comprises a hanging bracket, a telescopic device fixedly arranged on the hanging bracket and caliper units symmetrically arranged at the two ends of the hanging bracket, the upper portions and the tops of the two caliper units are rotationally connected with the two ends of the hanging bracket and the two ends of the telescopic device respectively, and movable caliper units are arranged on the lower portions of the caliper units. The movable clamp unit comprises a movable clamp body, friction wheel set units are arranged on the upper portion and the lower portion of the inner side of the movable clamp body respectively, each friction wheel set unit comprises a retainer, a plurality of rows of wheel grooves are transversely formed in the retainer, wheel shafts penetrate through the retainer respectively, and friction wheels arranged in the wheel grooves are arranged on the wheel shafts respectively. And the end part of the wheel shaft of one or two friction wheel set units is connected with a driving motor through a gear pair. By means of the universal shaft clamping structure, the problems that an existing universal shaft clamping structure cannot prevent a universal shaft from slipping or rotating in the clamping process, the phase position of the universal shaft cannot be adjusted, a universal shaft body may be damaged, and the universal shaft body swings relative to the clamping structure can be solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the universal shaft clamping equipment technical field, concretely relates to a flexible adjustable phase's universal shaft clamping device. BACKGROUND

[0002] As an important mechanical element, the universal shaft is widely used in the fields of mechanical engineering, precision instruments and automation equipment. The function of the universal shaft is to connect two shafts in different directions, so that the rotation of one shaft can be transmitted to the other shaft, while allowing a certain angular deviation between the two shafts. In practical application, the clamping of the universal shaft is a key technical link, because if clamped improperly, it may cause damage to the universal shaft or loss of precision.

[0003] The existing universal shaft clamping structure usually adopts the combination of fixed calipers and rubber pads. The fixed calipers are used to fix the universal shaft, while the rubber pads are used to increase the friction to prevent the universal shaft from slipping or rotating during clamping. However, this traditional clamping structure design has the following problems: First, the traditional universal shaft clamping structure does not take into account the situation of large amplitude slipping or rotating of the universal shaft during clamping. At this time, the clamping structure may cause damage to the universal shaft body. Even if some technologies use rubber pads on the clamping structure, they cannot solve the problem of the universal shaft swinging relative to the clamping structure during clamping, causing the clamping structure to clamp loosely and easily slip. Second, the existing universal shaft clamping structure cannot adjust the position of the universal shaft flange end face. In practical application, the adjustment of the universal shaft flange end face position is very important, because it directly affects the installation precision and efficiency of the universal shaft. However, the existing clamping structure design cannot achieve this function, limiting its application range and flexibility. Therefore, the existing universal shaft clamping structure has these problems and limitations in practical application, and needs further improvement and innovation. SUMMARY

[0004] The utility model provides a kind of flexible adjustable phase's universal shaft clamping device, can solve the problem that the existing universal shaft clamping structure cannot prevent universal shaft from slipping or rotating during clamping, cannot adjust the phase of universal shaft, can cause damage to universal shaft body and exist relative clamping structure swing.

[0005] The technical solution of the utility model to solve the technical problem is as follows:

[0006] According to one aspect of the present application, a flexible adjustable phase gimbal shaft clamping device is provided, which comprises a hanger, a telescopic device fixed on the hanger, and caliper units symmetrically arranged at both ends of the hanger, the two ends of the telescopic device are rotatably connected with the two caliper units at the top, the upper part of each caliper unit is rotatably connected with one end of the hanger, and the lower part of the inner side is movably provided with a movable caliper unit; the movable caliper unit comprises a "C"-shaped movable caliper body, a friction wheel set unit is arranged on the inner side of the upper part and the lower part of the movable caliper body, the friction wheel set unit comprises a retainer, a plurality of rows of wheel grooves are uniformly arranged on the retainer, and wheel shafts are arranged in the wheel grooves, respectively, a friction wheel arranged in each wheel groove is arranged on the wheel shaft, and the end of each wheel shaft of one or two friction wheel set units is connected with a driving motor through a gear pair, and the driving motor is fixedly connected with the movable caliper body.

[0007] Further, the upper part of the caliper unit is rotatably connected with one side end of the hanger through a pin shaft, and the two ends of the telescopic device are rotatably connected with the top of the two caliper units through a pin shaft.

[0008] Further, the telescopic device is a hydraulic oil cylinder.

[0009] Further, the wheel grooves on each movable caliper body are two rows.

[0010] Further, the two side ends of each wheel shaft of one or two friction wheel set units are respectively connected with a driving motor through a gear pair.

[0011] Further, a connecting rod is fixedly arranged on the outer side of the movable caliper body, a ball head is connected with the end of the connecting rod, a ball hinge groove matched with the ball head is arranged on the lower part of the inner side of the caliper unit, the movable caliper body is movably arranged in the inner side of the ball hinge groove through the ball head, and a ball hinge end cover is arranged at the slot opening of the ball hinge groove.

[0012] Further, the movable caliper body, the connecting rod and the ball head are integrally formed or welded.

[0013] Further, a movable caliper spherical surface is arranged on the bottom of the outer side of the movable caliper body, a caliper spherical surface is arranged at the corresponding position of the movable caliper spherical surface, and the movable caliper spherical surface and the caliper spherical surface are in frictional contact.

[0014] Compared with the prior art, the flexible adjustable phase gimbal shaft clamping device provided by the present application has the following advantages:

[0015] (1) The application perfectly solves the situation that the universal shaft slips or rotates in the clamping process of the traditional universal shaft clamping structure, thereby avoiding the damage to the universal shaft body; meanwhile, the movable caliper unit and the caliper unit are connected through a ball hinge, and the plane at the bottom of the inner side of the caliper unit and the bottom of the movable caliper unit is set as a matching spherical surface, thereby reducing the friction between the movable caliper unit and the caliper unit, and further improving the stability and reliability of the clamping device.

[0016] (2) The application can realize the accurate adjustment of the phase of the clamped universal shaft by setting a friction wheel on the movable caliper unit and driving the friction wheel to rotate through a motor, effectively solves the problem that the existing universal shaft clamping structure cannot automatically adjust the phase during the installation of the universal shaft, greatly improves the reliability and convenience of the universal shaft clamping device, and expands the application range and flexibility.

[0017] (3) The ball hinge connection between the caliper unit and the movable caliper unit and the spherical surface contact at the bottom of the caliper unit and the movable caliper unit can also solve the problem of the swing of the universal shaft during clamping without damaging the surface of the universal shaft, and the clamping is firm, safe, and improves the applicability of the clamping device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is a front structure schematic diagram of the utility model;

[0020] Figure 3 It is a cross-sectional structure schematic diagram of the utility model;

[0021] Figure 4 It is an enlarged schematic diagram of the connection between the movable caliper unit and the caliper unit (I) in the utility model; Figure 3

[0022] Figure 5 It is a schematic diagram of the movable caliper unit in the utility model;

[0023] In the figure: 1, hanger; 2, telescopic device; 3, caliper unit; 31, ball hinge groove; 32, caliper spherical surface; 33, ball hinge end cover; 4, pin shaft; 5, movable caliper unit; 51, movable caliper body; 52, retainer; 53, wheel groove; 54, friction wheel; 55, wheel shaft; 56, gear pair; 57, driving motor; 58, movable caliper spherical surface; 59, connecting rod; 510, ball head. DETAILED DESCRIPTION

[0024] ​The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should have the common meanings understood by those skilled in the art to which the present application belongs. The terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like used in the specification and claims of the present patent application are only used to represent relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships are also changed accordingly. The details not described in the present application are the common technical knowledge of those skilled in the art.

[0025] As shown in Figures 1-5 The present application provides a flexible adjustable phase universal shaft clamping device, which comprises a hanger 1, a telescopic device 2 fixed on the hanger 1, and a clamp unit 3 symmetrically arranged at both ends of the hanger 1.

[0026] In the present embodiment, the telescopic device 2 is preferably a hydraulic oil cylinder, the two ends of which are respectively rotatably connected to the top of the two clamp units 3 through a pin shaft 4, and the upper parts of the two clamp units 3 are respectively rotatably connected to the two end parts of the hanger 1 through a pin shaft 4. When the telescopic device 2 is telescoped, the two clamp units 3 are pushed at the top of the two clamp units 3 to rotate clockwise or counterclockwise around the pin shaft 4 connected to the two end parts of the hanger 1, thereby realizing the clamping or releasing action of the lower end of the two clamp units 3, so as to facilitate the clamping or releasing of the universal shaft.

[0027] In the present embodiment, the lower inner side of each clamp unit 3 is movably provided with a movable clamp unit 5, the movable clamp unit 5 comprising a movable clamp body 51 in the shape of "C", the inner side upper part and lower part of the movable clamp body 51 being respectively provided with a friction wheel set unit, the friction wheel set unit comprising a retainer 52, the retainer 52 being provided with a plurality of rows of wheel grooves 53 transversely spaced apart and respectively penetratingly provided with wheel shafts 55, the wheel shafts 55 being respectively provided with friction wheels 54 placed in the wheel grooves 53, and one or both sides of the wheel shafts 55 of the friction wheel set unit being connected with a driving motor 57 through a gear pair 56, the driving motor 57 being fixedly connected with the movable clamp body 51. Through the above structure, the two movable clamp units 5 are used to clamp the universal shaft, and the driving motor 57 on the movable clamp unit 5 can drive the wheel shafts 55 to rotate through the gear pair 46, thereby driving the rotation of the friction wheels 54, and further driving the rotation of the universal shaft, so as to realize the accurate adjustment of the phase.

[0028] In order to improve the use effect of the clamping device, as a preferred embodiment, the wheel groove 53 on each movable clamp body 51 is two rows, and one side end of the wheel shaft 55 of the friction wheel group unit is connected with a driving motor 57 through a gear pair 56, that is, the friction wheel 54 on each movable clamp body 51 has two rows, which can better clamp and rotate the universal shaft.

[0029] In order to further improve the use effect of the clamping device, as a preferred embodiment, a connecting rod 59 is fixedly arranged at the middle part of the outer side of the movable clamp body 51, and a ball head 510 is connected at the end of the connecting rod 59; a ball hinge groove 31 matched with the ball head 510 is arranged at the lower part of the inner side of the clamp unit 3; the movable clamp body 51 is movably arranged in the ball hinge groove 31 through the ball head 510, and a ball hinge end cover 33 is arranged at the slot of the ball hinge groove 31. Through the ball hinge connection mode, the clamping of the universal shaft is very convenient, the stability and reliability of the clamping device are further improved, and damage to the clamped universal shaft is avoided. As a further preferred embodiment, the movable clamp body 51, the connecting rod 59 and the ball head 510 can be integrally formed or welded.

[0030] As a further preferred embodiment, the outer side of the movable clamp body 51 is provided with a movable clamp spherical surface 58, and the clamp unit 3 is provided with a clamp spherical surface 32 at the corresponding position of the movable clamp spherical surface 58. The movable clamp spherical surface 58 and the clamp spherical surface 32 are in frictional contact. Through the spherical surface frictional contact structure, the friction between the movable clamp unit and the clamp unit can be effectively reduced, the stability of the clamping device is improved, and the damage of the universal shaft is avoided.

Claims

1. A flexible adjustable phase gimbal device, comprising: The utility model provides a kind of crane, including hanger (1), telescopic device (2) being fixed on the hanger (1) and caliper unit (3) being respectively symmetrically arranged at both ends of the hanger (1), the telescopic device (2) both ends are respectively connected with the rotation of two caliper units (3) top, the upper portion of each caliper unit (3) is rotatably connected with the one end of the hanger (1), and the lower portion inside is movably provided with movable caliper unit (5);The movable caliper unit (5) includes movable caliper body (51) of the shape of "C”, the inside upper portion and lower portion of the movable caliper body (51) are provided with friction wheel group unit respectively, the friction wheel group unit includes retainer (52), the retainer (52) is uniformly provided with several rows of wheel grooves (53) on the lateral side and is respectively provided with wheel shaft (55) penetratingly, the wheel shaft (55) is respectively provided with the friction wheel (54) placed in each wheel groove (53), and the end of each wheel shaft (55) of one or two friction wheel group units is connected with driving motor (57) by gear pair (56), and the driving motor (57) is fixedly connected with the movable caliper body (51).

2. A flexible adjustable phase cardanic shaft clamp device according to claim 1, characterized in that The upper portion of the caliper unit (3) is rotatably connected with the one side end of the hanger (1) by pin shaft (4);The both ends of the telescopic device (2) are rotatably connected with the top of two caliper units (3) by pin shaft (4) respectively.

3. A flexible adjustable phase cardanic shaft clamp device according to claim 1, characterized in that, The telescopic device (2) is hydraulic oil cylinder.

4. A flexible adjustable phase cardanic shaft clamp device according to claim 1, characterized in that, The wheel groove (53) on each movable caliper body (51) is two rows.

5. A flexible adjustable phase cardanic shaft clamp device according to claim 1, characterized in that, The both sides of the end of each wheel shaft (55) of one or two friction wheel group units is respectively connected with driving motor (57) by gear pair (56).

6. A flexible adjustable phase cardanic shaft clamp device according to claim 1, characterized in that The outside middle part of the movable caliper body (51) is fixedly provided with connecting rod (59), and the end of the connecting rod (59) is connected with ball head (510);The inside lower portion of the caliper unit (3) is provided with ball hinge groove (31) matched with the ball head (510);The movable caliper body (51) is movably arranged inside the ball hinge groove (31) by the ball head (510), and the slot opening of the ball hinge groove (31) is provided with ball hinge end cover (33).

7. A flexible adjustable phase cardanic shaft clamp device according to claim 6, characterized in that The movable caliper body (51), connecting rod (59) and ball head (510) are integrally formed or welded fixedly.

8. A flexible adjustable phase cardanic shaft clamp device according to claim 6, characterized in that The outside bottom of the movable caliper body (51) is provided with movable caliper spherical surface (58), and the caliper unit (3) is provided with caliper spherical surface (32) at the corresponding position of the movable caliper spherical surface (58), and the movable caliper spherical surface (58) is in frictional contact with the caliper spherical surface (32).

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