CN215806212U - Protective device - Google Patents

Abstract

The present invention provides a protection device, comprising: the rotating part comprises a folded state and an unfolded state, in the folded state, the elastic part is in a first stretching length, and the main plane and the top surface are intersected; in the unfolded state, the elastic piece is in a second stretching length, and an acute included angle between the main plane and the top surface is less than or equal to 5 degrees. The protection device sets up each part outside the gearbox casing except protecting, under fold condition, because rotating part and fixed part intersect and become certain angle, arouse maintainer's attention in the vision easily, be difficult to cause maintainer to step on to these parts or the mistake of protection device under fold condition, under the expansion condition, can have the function of stepping on the footboard again concurrently.

Description

Protective device

Technical Field

The present invention relates to a protection device, and more particularly, to a protection device for a sensor and a pipe connector.

Background

Various sensors and line connectors are included in the lubrication system of large gear boxes, such as wind power gear boxes. In some gearbox arrangements, at least a portion of the various sensors and line connectors (such as the sensor designated by reference numeral 1) described above are disposed outside of the gearbox housing 100 (see FIG. 1), and such sensors and line connectors are susceptible to damage from impact during transportation or during installation or maintenance. Moreover, since the sensors and the line connectors provided at the lower portion of the gear box housing are installed at relatively low positions, they are easily mistakenly stepped on by a gear box maintenance worker as a stepping platform for observing the upper portion of the large gear box, thereby causing damage to the sensors and the line connectors.

Thus, to protect the sensors and line connectors exposed outside the housing, in some gearbox designs, a simple protective cover 2 is used to shield the sensors and line connectors (see FIG. 2). The protective cover 2 has an L-shaped body perpendicular to the ground that covers both sides of the sensor or line connector, and provides some protection, for example, when the gearbox is inadvertently bumped during transport. However, since such a simple protective cover covers only a portion of the sensor and the pipe connector exposing the gear housing case and thus has a short length, the protective cover together with the sensor and the pipe connector may be damaged when a maintenance worker steps by mistake.

SUMMERY OF THE UTILITY MODEL

The utility model provides a protection device for solving the defects that a sensor and a pipeline connector arranged outside a gear box shell are easy to damage due to collision or are trampled by maintenance personnel by mistake in the prior art.

The purpose of the utility model is realized by the following technical scheme:

a protective device, characterized in that it comprises: the rotating part comprises a main plane, wherein the rotating part comprises a folded state and an unfolded state, and the main plane and the top plane are intersected in the folded state; in the unfolded state, an acute included angle between the main plane and the top surface is less than or equal to 5 degrees.

Preferably, the fixing part comprises a cover body, the cover body surrounds each component arranged outside the housing of the gear box, the cover body comprises an end face connected with the top face and two opposite side faces connected with the top face, the end face is fixed on the housing of the gear box, the end face and the top face form a first angle, the top face and the two side faces form a second angle, the first angle is 90-110 degrees, and the second angle is 80-100 degrees. More preferably, the first angle is 95 ° and the second angle is 90 °.

Preferably, the stationary part and the rotatable part are connected by at least one elastic member and a pin, the rotatable part being pivotable about the axis of the pin, the elastic member being in a first stretched length in the folded state; in the deployed state, the elastic member is at a second stretched length. The elastic piece is stretched in the folded state and the unfolded state, and the specific stretching length depends on the positions of the first connecting part and the second connecting part.

Preferably, the rotating portion includes two side walls connected to the main plane, a first through hole for inserting the pin is provided at one end of the side surface away from the end surface, and a first connecting portion for fixing one end of the elastic member is provided at one end of at least one of the side surfaces away from the end surface; each side wall is provided with a second through hole for inserting the pin, and a second connecting part for fixing the other end of the elastic part is arranged at a position, close to the first connecting part, in each side wall.

Preferably, the protection device comprises two elastic members, and one end of each of the two side surfaces, which is far away from the end surface, is provided with a first connecting part for fixing one end of one of the two elastic members, so that the folding and unfolding of the rotating part are more stable.

Preferably, a side wall of the side wall, which is close to the first connection portion, includes an extension portion, and in the unfolded state, the extension portion abuts against the first connection portion, so as to limit unfolding of the rotating portion.

Preferably, the end of the main plane close to the top surface has a rib, and in the folded state, the rib abuts against the top surface, thereby limiting the folding of the rotating portion.

Preferably, the first connecting portion is a cylinder.

Preferably, the second connecting portion is a cylinder.

Preferably, the elastic member is a spring.

In other preferred embodiments, the fixed portion and the rotating portion are connected by a pin and at least one connecting plate, the rotating portion is pivotable about an axis of the pin, the connecting plate is disposed outside and parallel to at least one of the two side surfaces for limiting and allowing rotation of the rotating portion relative to the fixed portion, wherein the rotating portion includes two side walls connected to the main plane, one end of the side surface, which is away from the end surface, is provided with a first through hole for inserting the pin, and one end of the side surface, which is away from the end surface, which is on the same side as the connecting plate, of the two side surfaces is provided with a first protruding portion; each side wall is provided with a second through hole for inserting the pin, and the side wall of the two side walls, which is positioned at the same side as the connecting plate, is provided with a second protruding part; the connecting plate comprises a third through hole and a limiting clamping groove, wherein the connecting plate is arranged on the first protruding part through the third through hole and can rotate around the first protruding part, the limiting clamping groove comprises a limiting part and a free part, and when the second protruding part is limited by the limiting part, the rotation of the rotating part relative to the fixing part is limited; when the second protruding portion is located in the free portion, the rotating portion is rotatable with respect to the fixed portion.

Preferably, the shape of the limiting part is matched with that of the second protruding part.

Preferably, the limiting portion is arranged on one side of the connecting plate close to the top surface, so that the connecting plate enables the limiting portion to be clamped with the second protruding portion under the action of gravity.

Preferably, the pin is located in the free portion.

Preferably, an end of the top face remote from the end face comprises a flange for abutting against an inner wall of the rotary part opposite the main plane in the unfolded state.

Preferably, the end face includes a slot for the passage of the components.

Preferably, the component is a sensor or a line connector, or other component that extends at least partially out of the gearbox housing.

The utility model has the technical effects that:

1. in the folded state, because the main plane (the rotating part) and the top surface (the fixed part) are intersected at a certain angle, the tilting rotating part is difficult to ignore visually, and therefore, the fixing part protects the protruding shell part of the gear box and prevents the maintenance personnel from stepping on the components or the fixing part by mistake.

2. Due to the large size of gearboxes, especially high-power wind power gearboxes, it is often necessary to observe the condition of the upper part of the gearbox by means of a ladder or the like during the assembly and maintenance of the gearbox. This protection device provides the platform of trampling for the maintenance personal through making main plane (rotating part) and top surface (fixed part) coplane under the expansion condition, provides convenience for the maintenance of the gear box upper portion condition.

Drawings

FIG. 1 shows a schematic of prior art sensors on and extending outside of a gearbox housing.

Figure 2 shows a schematic view of a prior art gearbox housing with a protective cover arranged thereon.

Fig. 3 is a schematic view of a protection device according to an embodiment of the present invention in a folded state.

Fig. 4 is a schematic view of a protection device according to an embodiment of the utility model in a deployed state.

Fig. 5 is a schematic view of a protection device according to another embodiment of the present invention in a folded state.

Fig. 6 is a schematic view of a protective device according to another embodiment of the utility model in a deployed state.

Fig. 7 is a schematic view of another perspective of a protection device according to another embodiment of the present invention in a folded state.

Fig. 8 is a schematic view of another perspective of a protective device according to another embodiment of the utility model in an expanded state.

Detailed Description

The following further describes embodiments of the present invention in conjunction with the accompanying drawings.

With reference to fig. 3 and 4, a protection device according to an embodiment of the present invention is described, which specifically includes: a stationary part 3, a rotating part 4 rotatably connected with the stationary part 3, and an elastic member 5 and a pin 6 connecting the stationary part 3 and the rotating part 4.

The fixing portion 3 includes a cover. The housing is intended to enclose components arranged outside the housing of the gearbox, such as sensors for detecting operating parameters in the gearbox or connectors for lubrication lines. The cover comprises an end face 31, a top face 321 connected with the end face, and two opposite side faces 322 connected with the end face 31 and the top face 321. The end face 31 is fixed to the housing of the gearbox, for example by two bolts, and the end face 31 comprises a slot 310 for the passage of the above-mentioned sensor or line connector or the like. In this embodiment, the end surface 31 is substantially perpendicular to the top surface 321 and the two side surfaces 322. A first through hole for inserting the pin 6 is formed in one end of the side surface 322, which is far away from the end surface 31, and a first connecting portion 71 for fixing one end of the elastic member 5 is formed in one end of at least one of the two side surfaces 322, which is far away from the end surface 31.

The rotary part 4 includes a main plane 41 and two side walls 42 connected to the main plane 41, and each side wall 42 is provided with a second through hole into which the pin 6 is inserted. A second connecting portion 72 for fixing the other end of the elastic member 5 is provided in the side wall 42 at a position close to the first connecting portion 71, and the rotary portion 4 is pivotable about the axis of the pin 6.

The swivel part 4 comprises a folded state and an unfolded state. Referring mainly to fig. 3, in the folded state, the elastic member 5 is in a first stretched length, and the main plane 41 intersects the top surface 321; referring mainly to fig. 4, in the unfolded state, the elastic member 5 is in the second stretched length, and the main plane 41 and the top surface 321 are parallel or form an acute angle smaller than 5 °.

In the folded state, the main plane 41 of the rotary part 4 intersects the top surface 321, which makes it easier for the maintenance personnel to visually notice while the protection device serves to protect the parts of the gearbox that extend out of the housing, even if the protection device is arranged at the lower part of the gearbox, it is not easy for the maintenance personnel to step on by mistake. In the unfolded state, the maintainer can unfold the rotating part 4 to make the main plane 41 and the top surface 321 parallel or form an acute angle smaller than 5 degrees, thereby forming a platform with a proper length as a stepping platform for the maintainer to step on to observe the condition of the upper part of the gearbox.

Further, each side wall 42 includes an extension portion 421, and in the unfolded state, the extension portion 421 abuts against the first connection portion 71, so as to limit the rotation of the rotating portion 4.

In addition, one end of the main plane 41 close to the top surface 321 has a rib 411, and in the folded state, the rib 411 abuts against the top surface 321 to limit the rotation portion 4.

In this embodiment, the first connecting portion 71 and the second connecting portion 72 are both cylinders. Other known shapes of attachment portions may be used by those skilled in the art to secure the resilient member.

In another preferred embodiment, the protection device comprises two elastic members, and one end of each of the two side surfaces, which is far away from the end surface, is provided with a first connecting part for fixing one end of one of the two elastic members. The elastic piece is a spring.

In another preferred embodiment, the first angle between the end surface and the top surface may be greater than or equal to 90 °, for example 90 ° -110 °, to adapt to the shape of the gearbox housing; in other preferred embodiments, the second angle between the top surface and the two side surfaces may be 80 ° to 100 °.

Referring to fig. 5 to 8, a protection device according to another embodiment of the present invention will be described, which is mainly different from the embodiment shown in fig. 3 to 4 in that the rotation of the rotation part is restricted by a connection plate. In particular, the protection device still comprises a fixed part 3 and a rotating part 4, said fixed part 3 and said rotating part 4 being connected by means of a pin 6 and at least one connecting plate 50. The rotary part 4 is pivotable about the axis of the pin 6, and the link plate 5 is disposed outside at least one of the two side surfaces 322 and parallel to the side surface 322, for restricting rotation of the rotary part 4 relative to the stationary part 3. Fig. 5-8 show only one web 50, although the outer side of each of the two sides 322 may be provided with one web parallel to the side.

The rotating portion 4 includes two side walls 42 connected to the main plane 41, a first through hole for inserting the pin 6 is provided at one end of the side surface 322 away from the end surface 31, and a first protrusion 3221 is provided at one end of the side surface away from the end surface on the same side as the connecting plate. Each side wall 42 is provided with a second through hole for inserting the pin 6 and a second protrusion 422 is provided on the side wall of the two side walls on the same side as the connecting plate 50. The pin 6 connecting the fixed portion 3 and the rotating portion 4 may be a single pin penetrating the two side walls 42 and the two side surfaces 322, or two pins connecting one side wall and one side surface adjacent to the side wall.

The connecting plate 50 includes a third through hole and a limiting slot, wherein the connecting plate 50 is disposed on the first protruding portion 3221 via the third through hole and can rotate around the first protruding portion 3221, and the limiting slot includes a limiting portion 501 and a free portion 502. Wherein when the second protruding portion 422 is restricted by the stopper portion 501, the rotation of the rotation portion 4 with respect to the fixing portion 3 is restricted; when the second protruding portion 422 is located in the free portion 502, the rotating portion 4 is rotatable with respect to the fixed portion 3.

Specifically, the shape of the position-limiting portion 501 is matched with the shape of the second protruding portion 422, and when the second protruding portion 422 is surrounded by the edge of the position-limiting portion 501, the rotation of the connecting plate 50 around the first protruding portion 3221 is limited by the position-limiting portion 501, so that the rotation portion 4 cannot move. When the rotating part 4 needs to be unfolded, the connecting plate 50 is pulled upwards, so that the second protruding part 422 is away from the limiting part 501, for example, the second protruding part 422 is located in the free part 502, referring to fig. 6 and 8, since the second protruding part 422 is no longer limited by the limiting part 501 and has a certain freedom of movement, accordingly, the rotating part 4 can also be released from the limited state, and the rotating part 4 can be unfolded to the position shown in fig. 6 and 8 by rotating around the pin 6.

The limiting portion 501 is disposed on one side of the connecting plate 50 close to the top surface 321, and the connecting plate 50 enables the limiting portion 501 to be easily clamped with the second protruding portion 422 under the action of gravity. In the unfolded state, the pin 6 is located in the free portion 502. In addition, with reference to fig. 7-8, in order to prevent over-rotation of the rotary part 4, the end of the top surface 321 remote from the end surface 31 comprises a flange 3210 for abutting against an inner wall 420 of the rotary part 4 opposite the main plane 41 in the extended state.

For the wind power gear box with larger volume, the wind power gear box comprises the protection device, the protection device can not only protect the connectors of the sensor and the pipeline from being damaged by collision during transportation, but also provide a treading platform for maintenance personnel under the unfolding, and the maintenance personnel can stand conveniently to observe the condition of the upper part of the gear box.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.

Claims (16)

1. A protective device, comprising: a fixed part and a rotating part rotatably connected with the fixed part, wherein,

the fastening part is intended to be fastened to a housing of a gearbox and at least partly circumferentially surrounds components arranged outside the housing of the gearbox, the fastening part comprising a top surface parallel to the horizontal plane,

the rotating part comprises a main plane, wherein,

the rotating portion includes a folded state in which the main plane intersects the top surface and an unfolded state; in the unfolded state, an acute included angle between the main plane and the top surface is less than or equal to 5 degrees.

2. The protection device of claim 1,

the fixing part comprises a cover body, the cover body surrounds all parts arranged outside the shell of the gear box, the cover body comprises an end face connected with the top face and two opposite side faces connected with the top face, the end face is fixed on the shell of the gear box, the end face and the top face form a first angle, the top face and the two side faces form a second angle, the first angle is 90-110 degrees, and the second angle is 80-100 degrees.

3. The protective device of claim 2 wherein the first angle is 95 ° and the second angle is 90 °.

4. A protector according to claim 2 in which the fixed and rotatable parts are connected by at least one resilient member and a pin, the rotatable part being pivotable about the axis of the pin, the resilient member being in a first stretched length in the collapsed condition; in the deployed state, the elastic member is at a second stretched length.

5. A protector according to claim 4 in which the rotary part comprises two side walls connected to the main plane,

one end of the side surface, which is far away from the end surface, is provided with a first through hole for the pin to be inserted into, and one end of at least one side surface, which is far away from the end surface, is provided with a first connecting part for fixing one end of the elastic part;

each side wall is provided with a second through hole for inserting the pin, and a second connecting part for fixing the other end of the elastic part is arranged at a position, close to the first connecting part, in each side wall.

6. A protective device according to claim 5 wherein the protective device comprises two resilient members, each side surface being provided at a respective end remote from the end surface with a first connection for securing an end of one of the two resilient members.

7. The protective device of claim 5 wherein the side wall adjacent the first connecting portion includes an extension that abuts the first connecting portion in the deployed state.

8. A protective device according to claim 5 wherein the first connecting portion is a post and/or the second connecting portion is a post.

9. A protective device according to claim 5 wherein the end of the major planar surface adjacent the top surface has a rib which in the folded condition abuts the top surface.

10. The protection device according to claim 2, wherein the stationary part and the rotatable part are connected by a pin and at least one link plate, the rotatable part being pivotable about the axis of the pin, the link plate being arranged outside and parallel to at least one of the two side surfaces for limiting and allowing rotation of the rotatable part relative to the stationary part, wherein,

the rotary part comprises two side walls connected to the main plane,

one end of the side surface, which is far away from the end surface, is provided with a first through hole for the pin to be inserted into, and one end of the side surface, which is far away from the end surface, on the same side with the connecting plate in the two side surfaces is provided with a first protruding part;

each side wall is provided with a second through hole for inserting the pin, and the side wall of the two side walls, which is positioned at the same side as the connecting plate, is provided with a second protruding part;

the connecting plate comprises a third through hole and a limiting clamping groove, wherein the connecting plate is arranged on the first protruding part through the third through hole and can rotate around the first protruding part, the limiting clamping groove comprises a limiting part and a free part,

wherein when the second protruding portion is restricted by the stopper portion, rotation of the rotating portion with respect to the fixed portion is restricted; when the second protruding portion is located in the free portion, the rotating portion is rotatable with respect to the fixed portion.

11. The protector of claim 10, wherein the shape of the stop portion is adapted to the shape of the second projection.

12. The protective device according to claim 10, wherein the stopper is provided on a side of the connecting plate near the top surface.

13. The protective device of claim 10 wherein the pin is located in the free portion.

14. A protector according to claim 10 in which the end of the top face remote from the end face includes a flange for abutment against an inner wall of the rotary part opposite the main plane in the deployed condition.

15. A protective device according to any one of claims 2 to 14 wherein the end face includes a slot for the passage of the components.

16. A protective device according to any one of claims 1 to 14 wherein the components are sensors or line connectors.

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