Tooth type coaxial clutch

Abstract

The utility model discloses a tooth type coaxial clutch which comprises a driving shaft, a first meshing piece, a driven shaft and a second meshing piece, an inner ring of the first meshing piece is provided with inner teeth, and an outer ring of the second meshing piece is provided with outer teeth matched with the inner teeth. The small-diameter section of the driven shaft is provided with external threads, the inner ring of the second meshing piece is provided with internal threads matched with the external threads, the left end of the small-diameter section is fixedly connected with a blocking piece for preventing the second meshing piece from falling off, and the small-diameter section is sleeved with an energy storage piece enabling the second meshing piece to abut against the blocking piece. According to the utility model, the meshing of the two meshing pieces in a static state can be realized, the impact on equipment is reduced, and the practicability is strong. When tooth grooves of the two meshing pieces are opposite, direct meshing can be achieved, when the first meshing piece and the second meshing piece are staggered, the first meshing piece pushes the second meshing piece to rotate by a certain angle along the driven shaft, static meshing is achieved, the energy storage piece enables the second meshing piece and the blocking piece to form integrity, and then it is ensured that power of the driving shaft is transmitted to the driven shaft.

Description

Technical Field

[0001] The utility model relates to a clutch, in particular to a toothed coaxial clutch. Background Art

[0002] The coaxial clutch is an important component commonly used in the field of mechanical transmission. According to the working conditions, the connecting components of the driving shaft and the driven shaft need to be quickly engaged to ensure the timely operation of the working machine. At present, most conventional toothed clutches are provided with pawls. During the engagement of the clutch, the pawls and the gears are first engaged. During the rotation of the driving shaft, another gear gradually enters the engagement under the guidance of the pawls, thus completing the engagement action of the clutch. This structure is relatively complex, the pawls are easily worn, and the engagement action must be completed during the rotation of the clutch, inevitably causing impact on the equipment and shortening the service life of the equipment. Summary of the Invention

[0003] In view of this, the utility model provides a toothed coaxial clutch, which can realize static engagement, thereby reducing the impact on the equipment and prolonging the service life of the equipment.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The toothed coaxial clutch of the utility model includes a first engaging member connected to the driving shaft and a second engaging member connected to the driven shaft. The inner ring of the first engaging member has internal teeth, and the outer ring of the second engaging member has external teeth that cooperate with the internal teeth; the driven shaft has a large-diameter section and a small-diameter section. The small-diameter section has an external thread, and the inner ring of the second engaging member has an internal thread that cooperates with the external thread. A retaining member for preventing the second engaging member from falling off is fixedly connected to the left end of the small-diameter section, and an energy storage member for pressing the second engaging member against the retaining member is sleeved on the small-diameter section behind the second engaging member. The beneficial effect is that when the internal teeth of the first engaging member and the tooth grooves of the second engaging member are aligned, static engagement between the first engaging member and the second engaging member can be realized. When the first engaging member and the second engaging member are misaligned, since the second engaging member is threadedly connected to the driven shaft, the first engaging member pushes the second engaging member to rotate a certain angle along the driven shaft to realize static insertion engagement. The integrity of the second engaging member and the retaining member is realized through the energy storage member, thereby ensuring the transmission of the power of the driving shaft to the driven shaft.

[0006] More preferably, the first engaging member is a sliding engaging member, and the first engaging member and the driving shaft are connected by splines. During actual processing, external splines are processed on the driving shaft, and internal splines are processed on the inner ring of the first engaging member. The internal splines and the external splines cooperate to realize the sliding connection between the first engaging member and the driving shaft.

[0007] Preferably, the energy storage member is a spring sleeved on the small-diameter section, and the spring is located between the second engaging member and the shoulder of the driven shaft, so that its left end face is closely attached to the stop member, and thus forms an integral body with the stop member to ensure the transmission of the power of the driving shaft to the driven shaft.

[0008] Preferably, the stop member is a baffle fixedly connected to the left end of the small-diameter section, and the baffle is concentric with the driven shaft, so that the left end face of the second engaging member tightly abuts against the baffle under the action of the energy storage member, ensuring that the second engaging member rotates together with the baffle and the driven shaft.

[0009] Compared with the prior art, the utility model can realize the engagement of the first engaging member and the second engaging member in a static state, reduce the impact on the equipment, protect the equipment, and has strong practicability. Specifically, when the internal teeth of the first engaging member and the tooth grooves of the second engaging member are aligned, the static engagement of the first engaging member and the second engaging member can be realized. When the first engaging member and the second engaging member are misaligned, due to the threaded connection between the second engaging member and the driven shaft, the first engaging member pushes the second engaging member to rotate a certain angle along the driven shaft to realize the static insertion and engagement. The integrity of the second engaging member and the stop member is realized through the energy storage member, and thus the power of the driving shaft is ensured to be transmitted to the driven shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a cross-sectional schematic view of the utility model (the first engaging member and the second engaging member are in a non-engaged state).

[0011] Figure 2 is an axonometric schematic view of the utility model.

[0012] Figure 3 is a fitting diagram of the first engaging member and the second engaging member of the utility model (the internal teeth and the external teeth are misaligned). DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following will describe in detail the embodiments of the utility model with reference to the accompanying drawings. The embodiments are implemented on the premise of the technical solution of the utility model, and the detailed implementation manners and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.

[0014] It should be noted that in the description of the utility model, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0015] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "connected" and "coupled" that may appear should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0016] As Figure 1-2 shown, the toothed coaxial clutch of the present utility model includes a first engaging member 2 connected to the driving shaft 1 (with a shaft shoulder) and a second engaging member 4 connected to the driven shaft 3. The first engaging member 2 is a sliding engaging member, which has an internal spline. The driving shaft 1 has an external spline, and the parameters of the internal spline and the external spline are the same, thereby realizing the sliding connection between the first engaging member 2 and the driving shaft 1. The first engaging member 2 has a cylindrical groove for cooperating with the second engaging member 4, and the inner wall of the groove has a circle of internal teeth 2.1 (internal straight teeth). The outer ring of the second engaging member 4 has external teeth 4.1 (external straight teeth) for cooperating with the internal teeth 2.1. When the internal teeth 2.1 of the first engaging member 2 are aligned with the tooth grooves of the second engaging member 4, the engagement between the two can be realized.

[0017] The driven shaft 3 is a stepped shaft, which has a large-diameter section and a small-diameter section. The connection between the large-diameter section and the small-diameter section forms a shaft shoulder of the driven shaft 3. The small-diameter section is provided with an external thread 3.1. The inner ring of the second engaging member 4 has an internal thread for cooperating with the external thread 3.1, thereby realizing the threaded connection between the driven shaft 3 and the second engaging member 4. Among them, when looking from the baffle 5 to the right, the directions of the internal thread and the external thread 3.1 are opposite to the rotation direction of the driven shaft 3, that is, the rotation direction of the second engaging member 4 during engagement is opposite to the rotation direction of the driven shaft 3 during operation.

[0018] A retaining member for preventing the second engaging member 4 from falling off is fixedly connected to the left end of the small-diameter section. The retaining member is a circular baffle 5. The baffle 5 is concentrically arranged with the driven shaft 3. The diameter of the baffle 5 is smaller than the diameter of the cylindrical groove, so that it can enter the first engaging member 2, thereby meeting the engagement requirements between the first engaging member 2 and the second engaging member 4. An energy storage member for pressing the second engaging member 4 against the baffle 5 is sleeved on the small-diameter section behind the second engaging member 4, that is, the energy storage member is sleeved on the small-diameter section between the second engaging member 4 and the shaft shoulder of the driven shaft 3. The energy storage member is a spring 6. The spring 6 acts on the second engaging member 4. When the first engaging member 2 and the second engaging member 4 are engaged and the second engaging member 4 is pressed against the baffle 5, the two form a whole, ensuring that the second engaging member 4 and the baffle 5 rotate synchronously, thereby transmitting power to the driven shaft 3 and realizing the rotation of the driven shaft 3.

[0019] During actual operation, an external force is applied to the first engaging member 2. The first engaging member 2 moves towards the driven shaft 3 under the force. When its right end face abuts against the left end face of the second engaging member 4, and the internal teeth 2.1 of the first engaging member 2 are aligned with the tooth grooves of the second engaging member 4, and the external teeth 4.1 of the second engaging member 4 are aligned with the tooth grooves of the first engaging member 2, pushing the first engaging member 2 further to the right until it is pushed into place can achieve the static engagement of the first engaging member 2 and the second engaging member 4, reducing the impact on the equipment;

[0020] When the internal teeth 2.1 of the first engaging member 2 are misaligned with the tooth grooves of the second engaging member 4 (see specifically Figure 3 ), due to the misalignment, when the first engaging member 2 continues to move to the right, it will push the second engaging member 4. Since the second engaging member 4 is threadedly connected to the driven shaft 3, the second engaging member 4 rotates by a certain angle under the action of the first engaging member 2 until the internal teeth 2.1 of the first engaging member 2 are aligned with the tooth grooves of the second engaging member 4 and they are locked together. The first engaging member 2 continues to move to the right along the axis and completes the engagement after reaching the set position;

[0021] After the engagement is completed, there is a certain gap between the second engaging member 4 and the baffle 5. When the driving shaft 1 rotates, it drives the second engaging member 4 to rotate through the first engaging member 2, causing the second engaging member 4 to move towards the baffle 5 while rotating until it is in close contact with the baffle 5. The second engaging member 4 and the baffle 5 are in close contact to form a whole. The second engaging member 4 stops moving and transmits the rotational power to the driven shaft 3, thereby realizing the rotation of the driven shaft 3 and meeting the working requirements of the equipment. The structure of the present utility model is simple and convenient for assembly. Even if the two engaging members are misaligned, the static engagement of the two engaging members can be achieved, reducing the impact on the equipment, and thus prolonging the working life of the transmission equipment. It is particularly suitable for industrial gearboxes, barring devices of multi-shaft compressors, electric motors, and feed pumps.

[0022] Finally, it should be emphasized that the above description is only the preferred embodiment of the present utility model and is not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or make equivalent replacements for some of the technical features. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A toothed coaxial clutch, comprising a first meshing member connected to a driving shaft and a second meshing member connected to a driven shaft, characterized in that: The inner ring of the first meshing member has internal teeth, and the outer ring of the second meshing member has external teeth matching the internal teeth; the driven shaft has a large diameter section and a small diameter section, the small diameter section has external threads, and the inner ring of the second meshing member has internal threads matching the external threads, and a stopper is fixedly connected to the left end of the small diameter section to prevent the second meshing member from falling off, and an energy storage member is mounted on the small diameter section located on the rear side of the second meshing member to make the second meshing member stick to the stopper.

2. The tooth type coaxial clutch according to claim 1, characterized in that: The first engaging member is a sliding engaging member, and the first engaging member and the driving shaft are connected via a spline.

3. The tooth type coaxial clutch according to claim 1, characterized in that: The energy storage member is a spring sleeved on the small diameter section, and the spring is located between the second engaging member and the shoulder of the driven shaft.

4. The tooth type coaxial clutch according to claim 1, characterized in that: The blocking member is a baffle plate fixedly connected to the left end of the small diameter section, and the baffle plate is cocentric with the driven shaft.

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