CN210889810U

CN210889810U - Compensation device for power distribution cabinet

Info

Publication number: CN210889810U
Application number: CN201921201161.1U
Authority: CN
Inventors: 陈闯; 陈振波; 朱晓慧
Original assignee: Eaton Electric Ltd
Current assignee: Eaton Electric Ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-06-30
Anticipated expiration: 2029-07-29

Abstract

The utility model provides a compensation arrangement for switch board, switch board include the cabinet body, cabinet door, set up the handle on the cabinet door and arrange the circuit breaker at the internal of cabinet, and compensation arrangement includes first flange, second flange and sets up the third flange between first flange and second flange, and first flange and second flange include first pair of slot hole and second respectively to the slot hole, and first pair of slot hole is to the extending direction nonparallel of slot hole with the second. The compensation device also includes a first shaft and a second shaft. The first and second flanges are coupled to the third flange by means of a connecting member passing through the first and second pairs of elongated holes, respectively. The connecting piece can move in the extending direction of the first pair of long holes and the second pair of long holes, and a gap exists between the first flange and/or the second flange and the third flange to allow the first flange and/or the second flange and the third flange to form an acute angle in an included mode. The device can compensate displacement error and angle error between the handle and the breaker.

Description

Compensation device for power distribution cabinet

Technical Field

The utility model relates to a compensation arrangement especially relates to a displacement and angle compensation arrangement.

Background

The circuit breaker is generally installed in the switch board, if wish to open or close the circuit breaker then need open the cabinet door execution of switch board, in order to save this step of opening the cabinet door, people usually can install the twist grip outside the cabinet door and provide a transmission shaft, and this twist grip is connected to one end of this transmission shaft, and the other end is connected to the central point of circuit breaker and puts. Theoretically, in order to achieve precise control of the closing of the circuit breaker by the handle, it is necessary that the center of the circuit breaker and the center of the opening of the rotating handle are exactly on a line and the installation plane (cabinet door face) of the rotating handle is absolutely parallel to the operation plane of the circuit breaker. However, in the actual operation process, the center of the opening of the rotary handle on the cabinet door is difficult to ensure to be positioned in a line and a plane with the center of the circuit breaker due to factors such as manufacturing errors, installation errors, use deformation and operation problems, and certain displacement errors and angle errors exist.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above problem, the utility model provides a compensation device, it has realized compensating displacement error and angle error simultaneously through adopting two axles and arranging the drive mechanism for compensating between these two axles. According to the utility model discloses a compensation arrangement compact structure, convenient operation, with low costs and the operation is reliable.

The utility model provides a compensation arrangement for switch board, the switch board includes the cabinet body, cabinet door, sets up the handle on the cabinet door and arranges the internal circuit breaker of cabinet, and this compensation arrangement includes first flange and second flange, and first flange includes the first pair of slot hole about its centre of a circle symmetrical arrangement, the second flange with first flange mutual disposition, include about its centre of a circle symmetrical arrangement's second to the slot hole, wherein the extending direction of first pair of slot hole with the extending direction nonparallel of second to the slot hole. The compensation device also comprises a first shaft and a second shaft, wherein one end of the first shaft is detachably and fixedly coupled to the side surface of the first flange, which is far away from the second flange, and the other end of the first shaft is in fit connection with the circuit breaker; one end of the second shaft is fixedly coupled to a side of the second flange facing away from the first flange, and the other end is connected to the handle for synchronous movement therewith. The compensating device further comprises a third flange disposed between the first flange and the second flange, the first flange and the second flange being coupled to the third flange by means of a connecting member passing through the first pair of elongated holes and the second pair of elongated holes, respectively; wherein the connecting piece is designed to be movable in the first pair of long holes and the second pair of long holes in the extending direction thereof, and a gap is formed between the first flange and the third flange after the first flange and/or the second flange is coupled to the third flange so as to allow the first flange and/or the second flange to form an acute angle with the third flange.

Preferably, the direction of extension of the first pair of elongated holes is designed to be perpendicular to the direction of extension of the second pair of elongated holes.

Preferably, the acute angle is designed to be less than 5 °

Preferably, a connection hole is formed in the third flange at a central position corresponding to each of the first pair of long holes and the second pair of long holes, and the connection member passes through the connection hole to connect the first flange and/or the second flange to the third flange.

Preferably, the connecting member is designed to have three steps, and includes a first step section, a second step section and a third step section, wherein the diameter of the first step section should be greater than the width of each long hole, the diameter of the second step section should be smaller than the width of each long hole but greater than the connecting hole, the length of the second step section is greater than the height of the first flange or the second flange, and the diameter of the third step section should be smaller than the connecting hole and greater than the height of the third flange, so as to allow the third flange to abut against the transition surface of the third step section and the second step section after being coupled with the first flange or the second flange.

Preferably, the length of each of the elongated holes is designed to be 8 mm larger than the diameter of the second stepped section.

Preferably, the compensation device further comprises a first reset piece and a second reset piece designed to provide a biasing force, the first reset piece being fixedly connected to a side of the first flange facing the second flange, the second reset piece being fixedly coupled to a side of the second flange facing the first flange.

Preferably, the third flange is designed in the form of a ring comprising a hollow portion, the first reset piece and the second reset piece being housed in the hollow portion and having a sum of their thicknesses equal to the height of the third flange.

Preferably, the first shaft is configured to have a non-circular cross section and is coupled to the first flange by means of a coupling assembly, the coupling assembly is configured to include a connecting main body and a limiting member, one end of the connecting main body is inserted into the first flange, a connecting cavity matched with the cross section of the first shaft in shape is formed in the other end of the connecting main body, a limiting hole is formed in a side surface of the connecting main body, and the limiting member can be screwed into or out of the limiting hole to limit the first shaft in the connecting cavity.

Preferably, the connecting member is a rivet or a bolt.

Drawings

Fig. 1 is an assembly schematic of a compensating device according to the present invention;

fig. 2 is an exploded schematic view of a compensating device according to the present invention;

fig. 3 is an angle compensation schematic diagram of the compensation device according to the present invention.

List of reference numerals

1. A first shaft; 2. a second shaft; 3. a first flange; 4. a second flange; 5. a third flange; 6. a connecting member; 6.1. a first step section; 6.2. a second step section; 6.3. a third step section; 7. a first reset member; a second restoring member; 9. a connecting assembly; 10. a connecting cavity; 11. a limiting member; 12. a connecting body; 13. a first pair of elongated holes; 14. a second pair of slots.

Detailed Description

The compensating device of the present invention will be described in detail below with reference to the accompanying drawings, which are provided to present some embodiments of the invention, but are not necessarily drawn to scale of the specific embodiments, and may be enlarged or reduced in whole or in part. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. Unless otherwise indicated, the directional terms described herein are substantially as conventionally understood by those skilled in the art. The terms "first" and "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. It is particularly noted that "long hole" in the present application refers to a through hole having a dimension in the longitudinal direction larger than a dimension in the width direction, wherein the extending direction of the "long hole" refers to the orientation in which the longitudinal direction thereof is located.

Fig. 1 shows an assembly schematic of a compensating device according to the invention in a state of use. When the power distribution cabinet is used, the first shaft 1 is connected to the center position of the circuit breaker, the second shaft 2 is inserted into a handle which is used for being held by a person and driving the second shaft 2 to rotate through a handle opening formed in a cabinet door from the power distribution cabinet, and the second shaft 2 and the handle can move synchronously in the mode. The movement of the second shaft 2 will be transmitted to the first shaft 1 by means of a transmission mechanism arranged between the first shaft 1 and the second shaft 2, thereby controlling the opening and closing of the circuit breaker. The cooperation of the first shaft with the circuit breaker is well known in the art and will not be described further herein.

Fig. 2 shows an exploded view of the transmission. It can be seen from the figure that the movement of the second shaft 2 is transmitted to the first shaft 1 by means of a first flange 3 assembled together in a particular way, a second flange 4 arranged opposite to the first flange 3 and a third flange 5 arranged between the first flange 3 and the second flange 4. Wherein the first shaft 1 is detachably connected to the side of the first flange 3 facing away from the second flange 4 by means of a connecting assembly 9, such as shown in fig. 2. The connecting component 9 is, for example, configured to include a connecting main body 12 and a limiting member 11, the connecting main body 12 has a connecting cavity 10 opened at the other end thereof, the connecting main body 12 has a limiting hole opened at a side surface thereof, and the limiting member 11 can be screwed into or out of the limiting hole to enter or leave the connecting cavity 10.

The first shaft 1 may have a non-circular cross-section and the connecting cavity 10 may have a shape that matches the cross-section of the first shaft 1, whereby the first shaft 1 may drive the connecting body 12 in rotation. The limiting member 11 is screwed into the connecting body 12 until abutting against the first shaft 1 to limit the position of the first shaft 1 in the connecting cavity 10, preventing it from slipping or shifting during operation. The connecting body 12 may be non-rotatably coupled to the first flange, such as by welding or an interference fit. By means of this detachable design, the first shaft 1 can be replaced according to the size of the subject circuit breaker, whereby the entire compensating device can be flexibly applied to various types of circuit breakers. The second shaft 2 may be connected to the side of the second flange 4 facing away from the first flange 3 by welding or interference fit or the like. Of course, the second shaft 2 may also be detachably connected to the second flange 4, as will be appreciated by the person skilled in the art.

The assembly of the first flange 3, the second flange 4 and the third flange 5 will be described in detail below by taking the installation manner of the first flange 3 and the third flange 5 as an example. With continued reference to fig. 2, the first flange 3 is designed to include a first pair of elongated holes 13, and in order to ensure that the first flange 3 can be stably translated with respect to the third flange 5, each of the first pair of elongated holes 13 should be symmetrically arranged about the center of the first flange 3. In addition, as will be understood by those skilled in the art, the extending directions of the two long holes symmetrically arranged about the center of the circle are consistent. The first flange 3 is fixedly connected to the third flange 5 by means of a pair of connecting members 6, which may be rivets or bolts, and which will be described below by way of example as rivets. And connecting holes are formed in the third flange 5 at positions corresponding to the first pair of long holes 13, and rivets are inserted into the corresponding connecting holes in the third flange 5 through the long holes to rivet the first flange 3 and the third flange 5 together. Preferably, the attachment hole on the third flange 5 is opened at a position corresponding to the center of each elongated hole to achieve that the rivet can move the same distance in the elongated hole toward opposite sides in the extending direction of the elongated hole.

The second flange 4 is constructed in a manner substantially identical to the third flange 5 in terms of design and attachment to the first flange 3, except that the second pair of elongated holes 14 formed in the second flange 4 extend in a direction not parallel to the direction of extension of the first pair of elongated holes 13. It should be noted that in the case where the extending direction of the first pair of long holes 13 is not parallel to the extending direction of the second pair of long holes 14, it is possible to achieve compensation for an arbitrarily oriented offset in one plane. Preferably, the extending direction of the first pair of long holes 13 is perpendicular to the extending direction of the second pair of long holes 14, preferably horizontal and vertical directions, respectively.

In order to achieve angular compensation, the first flange 3 and the second flange 4, after being connected to the third flange 5 by means of rivets, should have a clearance from the third flange 5, the presence of which clearance allows the first flange 3 or the second flange 4 to rotate relative to the third flange 5 forming an angle with its envelope. This clearance may allow the second flange 4 and the third flange 5 to form an acute angle theta between them, which may be used to compensate for angular deviations, for example, as shown in fig. 3, when the mounting surface of the swing handle and the circuit breaker operating plane are no longer parallel. Preferably, the acute angle θ does not exceed 5 °.

The size of the acute angle θ is achieved by controlling the gap between the second flange 4 and the third flange 5. The gap can be implemented in various ways, the simplest being a connection piece with a uniform cross section and a sufficient length, but in this case the second flange 4 and the third flange 5 can both move freely in the direction of extension of the connection piece, so it is difficult to control the gap size between the second flange 4 and the third flange 5 precisely. To facilitate installation and more precise control of the amount of clearance, a three-step linkage 6 may be used. The connector may comprise a first step section 6.1, a second step section 6.2 and a third step section 6.3, wherein the diameter of the first step section 6.1 should be larger than the width of the elongated hole, which is essentially the cap of the rivet; the second step section 6.2 is dimensioned with a diameter smaller than the elongated hole but larger than the connection hole so as not to be inserted into the connection hole, and a length larger than the height of the first flange 3 or the second flange 4, and the third step section 6.3 is dimensioned with a diameter smaller than the connection hole and a length larger than the height of the third flange 5 and allowing the third flange 5 to abut against a transition surface of the third step and the second step after being coupled with the first flange 3 or the second flange 4. Therefore, the size of the gap between the first flange 3 or the second flange 4 and the third flange 5 only depends on the difference between the length of the second step section 6.2 and the height of the first flange 3 or the second flange 4, and is not influenced by the first step section 6.1 and the second step section 6.2, so that the control is accurate and the installation is convenient for workers. Preferably, the length of the elongated hole is 8 mm larger than the diameter of the second step section 6.2.

In addition, after the first flange 3 and/or the second flange 4 is displaced or rotated relative to the third flange 5, it cannot be returned to the original position relative to the third flange 5 without a manual next operation. The compensating device of the present invention is thus also provided with a first return element 7 and a second return element 8. Wherein the first restoring element 7 is fixedly connected to the side of the first flange 3 facing the second flange 4, and the second restoring element 8 is connected to the side of the second flange 4 facing the second flange 4. In the case where the third flange 5 is designed in a hollow ring shape, the first restoring member 7 and the second restoring member 8 can be accommodated in the hollow portion of the third flange 5, thereby reducing the volume of the entire apparatus and achieving a compact design. Preferably, the sum of the thicknesses of the first return element 7 and of the second return element 8 is equal to the height of the third flange 5. The first and second returning

members

7 and 8 may be made of a material capable of providing a biasing force, such as silicon rubber, a spring, etc., which can drive the first and second flanges 3 and 4 to return to the initial position relative to the third flange 5 after the external force on the second shaft 2 is removed.

The manner of achieving displacement compensation in the horizontal direction and the vertical direction is described taking, as an example, the first pair of long holes 13 extending in the horizontal direction (a) and the second pair of long holes 14 extending in the vertical direction (B) in fig. 2. When the handle deflects towards the direction a, the second shaft 2 drives the second flange 4 to deflect towards the direction a, and since the rivets fixing the second flange 4 to the third flange 5 can only vertically move along the extending direction of the second pair of long holes 14, the second flange 4 cannot compensate and can only move along with the second shaft 2 and drive the third flange 5 to deflect towards the direction a, and under the condition that the third flange 5 also deflects towards the direction a, the rivets fixing the first flange 3 to the third flange 5 can also move towards the direction a along the extending direction of the rivets in the first pair of long holes 13, but the first flange 3 does not need to move, and therefore the transverse deflection on the second shaft 2 cannot be transmitted to the first shaft 1. Similarly, when the handle is vertically offset, for example, with the offset of the cabinet door, the vertical offset can be compensated at the second flange 4, and the third flange 5 and the first flange 3 do not need to be offset.

When the mounting surface of the handle is deflected by a small angle with respect to the operating plane of the circuit breaker, the second shaft 2 will bring the second flange 4 to also tilt with respect to the third flange 5 to form an acute angle θ, and if the acute angle θ is insufficient to compensate for the angular deviation, the third flange 5 will continue to tilt with respect to the first flange 3 to form a compensation angle.

Claims

1. The utility model provides a compensation arrangement for switch board, the switch board include the cabinet body, cabinet door, set up in handle on the cabinet door and arranging the internal circuit breaker of cabinet, characterized by includes:

a first flange (3) comprising a first pair of elongated holes (13) arranged symmetrically about the centre thereof;

a second flange (4) arranged opposite to the first flange (3) and comprising a second pair of elongated holes (14) arranged symmetrically with respect to the center thereof, wherein the direction of extension of the first pair of elongated holes (13) is not parallel to the direction of extension of the second pair of elongated holes (14);

a first shaft (1) with one end detachably and fixedly coupled to the side of the first flange (3) away from the second flange (4) and the other end in fit connection with the circuit breaker;

a second shaft (2) having one end fixedly coupled to a side of the second flange (4) facing away from the first flange (3) and the other end connected to the handle for synchronous movement therewith;

a third flange (5) arranged between the first flange (3) and the second flange (4), the first flange (3) and the second flange (4) being coupled to the third flange (5) by means of a connection (6) passing through the first pair of elongated holes (13) and the second pair of elongated holes (14), respectively;

wherein the connecting piece (6) is designed to be movable in the direction of extension of the first and second pairs of elongated holes (13, 14) such that, after the first and/or second flange (3, 4) is coupled to the third flange (5), there is a gap between the third flange (5) and the first and/or second flange (3, 4) in order to allow the first and/or second flange (5, 4) to form an acute angle with the third flange (5).

2. The compensation device for distribution cabinets according to claim 1, characterized in that the direction of extension of said first pair of elongated holes (13) is designed to be perpendicular to the direction of extension of said second pair of elongated holes (14).

3. The compensation device for a distribution cabinet according to claim 1, wherein said acute angle is designed to be less than 5 °.

4. The compensating device for distribution cabinets according to claim 1, characterized in that a connection hole is made in said third flange (5) in correspondence of the central position of each of said first pair of elongated holes (13) and said second pair of elongated holes (14), through which said connecting element (6) passes to connect said first flange (3) and/or said second flange (4) with said third flange (5).

5. Compensation device for distribution cabinets according to claim 4, characterized in that said connection piece (6) is designed in three-step shape, which comprises a first step section (6.1), a second step section (6.2) and a third step section (6.3) with the diameters decreasing in sequence, wherein the diameter of the first step section (6.1) should be larger than the width of each elongated hole, the second step section (6.2) being dimensioned with a diameter smaller than the width of each elongated hole but larger than the connection hole, the length of which is greater than the height of the first flange (3) or the second flange (4), the third step section (6.3) is dimensioned with a diameter smaller than the connection hole and a length larger than the height of the third flange (5) and allows the third flange (5) to abut against the transition face of the third step and the second step after being coupled with the first flange (3) or the second flange (4).

6. The compensating device for distribution cabinets according to claim 5, characterized in that the length of each of said elongated holes is designed to be 8 mm larger than the diameter of said second step section (6.2).

7. The compensating device for a switch board according to claim 1, characterized in that the compensating device further comprises a first reset piece (7) and a second reset piece (8) designed to provide a biasing force, the first reset piece (7) being fixedly connected to a side of the first flange (3) facing the second flange (4), the second reset piece (8) being fixedly coupled to a side of the second flange (4) facing the first flange (3).

8. Compensation device for distribution cabinets according to claim 7, characterized in that said third flange (5) is designed as a ring comprising a hollow portion, said first return element (7) and said second return element (8) being housed in said hollow portion with a sum of their thicknesses equal to the height of said third flange (5).

9. The compensation device for a power distribution cabinet according to claim 1, wherein the first shaft (1) is configured to have a non-circular cross section and is coupled to the first flange (3) by means of a connecting assembly (9), the connecting assembly (9) is configured to include a connecting body and a limiting member, one end of the connecting body is coupled to the first flange, the other end of the connecting body is provided with a connecting cavity (10) matched with the cross section of the first shaft (1), a side surface of the connecting body is provided with a limiting hole, and the limiting member can be screwed into or out of the limiting hole to limit the first shaft in the connecting cavity.

10. The compensating device for distribution cabinets according to any of the preceding claims, characterized in that the connecting pieces (6) are rivets or bolts.