Clamping mechanism and relay dustproof shield

Abstract

The invention discloses a clamping mechanism and relay dustproof shield which comprises a shell, a sliding cover, a connecting rod and a sliding block, the sliding cover is slidably connected with the shell, the connecting rod is slidably connected with the shell, the sliding block is movably connected with the sliding cover, the sliding block is further movably connected with the connecting rod, and the connecting rod is movably connected with the sliding cover. The shell, the sliding cover, the connecting rod and the sliding block are symmetrically arranged, the shell is arranged in the cover body, the cover body comprises a soft sleeve and a bottom table, and the soft sleeve is arranged on the bottom table. The clamping mechanism has the beneficial effects that the clamping mechanisms are symmetrically arranged, when the sliding cover makes contact with the side face of an object, the sliding cover slides into the shell, the sliding block is arranged in the first through groove of the shell and the second through groove of the connecting rod, when the sliding cover slides, sliding block heads at the two ends of the sliding block slide on the guide blocks, and at the moment, the connecting rod is driven to contract towards the inclined cover face; and the connecting rod upper clamping plate is used for clamping.

Description

Technical Field

[0001] The invention relates to the technical field of relay protection, in particular to a clamping mechanism and a relay dustproof shield. Background Art

[0002] During the operation of thermal power plants, relays are an important part of the secondary circuit. Relays are usually rectangular and plugged into the relay base. They are responsible for monitoring and protecting the normal operation of power equipment. However, due to the special environment of coal-fired power generation in thermal power plants, relays are exposed to a large amount of coal ash and are easily contaminated. Coal ash is tiny particles produced after burning coal, which has strong adhesion and conductivity. When these particles enter the interior of the relay or its contacts, it may cause internal short circuits in the relay, burn out the contacts, and even cause secondary circuit failures.

[0003] During routine maintenance of relays, technicians often find coal ash accumulation inside the relays, especially in areas with severe coal ash leakage, such as near coal-fired boilers, dust collectors and coal transportation systems. Coal dust usually enters through the gap when the relay is inserted into the relay base, or through the tiny gap between the relay housing and the external environment. In these locations, the relay cannot effectively prevent the entry of tiny particles, which leads to abnormal wear and short circuit problems at the electrical contacts.

[0004] In traditional solutions, technicians usually rely on regular maintenance and replacement of relays to prevent failures. However, regular replacement cannot completely avoid the accumulation of coal ash inside the relay. Especially during equipment operation, relay failure will affect the normal operation of the power system, which is particularly unfavorable for thermal power plants operating at high loads. Therefore, a dust cover is needed to protect the relay, and this dust cover can be easily set up. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned problem or the problem in the prior art that a dustproof device can be conveniently installed on a relay, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide a clamping mechanism, which aims to solve the problem of setting a dust cover on a relay, and the dust cover can be conveniently clamped according to the relay and the base structure.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a clamping mechanism, which includes a shell, a sliding cover, a connecting rod and a slider, the sliding cover is slidably connected to the shell, the connecting rod is slidably connected to the shell, the slider is movably connected to the sliding cover, and the slider is also movably connected to the connecting rod, and the shell, the sliding cover, the connecting rod and the slider are symmetrically arranged.

[0009] As a preferred solution of the clamping mechanism described in the present invention, the shell includes a limit block, a ring and a column, the limit block is arranged on the shell, the ring is arranged on one side of the limit block, the column is arranged on the same side of the ring, the column is arranged at the center of the ring, and the sliding cover is slidably connected in the ring.

[0010] As a preferred solution of the clamping mechanism of the present invention, guide grooves are further provided on both horizontal sides of the inner side wall of the collar, the sliding cover is slidably connected to the collar via the guide grooves, and a first through groove is provided on the sleeve column.

[0011] As a preferred solution of the clamping mechanism described in the present invention, the sliding cover includes an inclined cover surface, a guide block and a limit strip, the inclined cover surface is arranged on the opposite side of the sliding cover opening, the guide block is arranged on the inner wall of the sliding cover, the guide block is an inclined surface on the side relative to the center of the sliding cover, at least two guide blocks are arranged and are centrally symmetrical, the limit strip is arranged on the horizontal outer side wall of the sliding cover, and the limit strip is slidably connected to the guide groove.

[0012] As a preferred solution of the clamping mechanism of the present invention, a connecting ring is arranged on the side of the inclined cover surface opposite to the sliding cover opening, and one end of the connecting rod is arranged in the connecting ring.

[0013] As a preferred solution of the clamping mechanism described in the present invention, the connecting rod includes a stopper, an elastic member, a second through-slot and a clamping plate, the stopper is arranged at one end of the connecting rod, the clamping plate is arranged at the other end of the connecting rod, the elastic member is arranged on the opposite side of the stopper relative to the clamping plate, and the second through-slot is arranged on the connecting rod body.

[0014] As a preferred solution of the clamping mechanism of the present invention, the slider includes a slider head and a block body, the slider head is centrally symmetrically arranged at both ends of the block body, the block body is inclined, and the block body is arranged in the first through groove and the second through groove.

[0015] As a preferred solution of the clamping mechanism of the present invention, the guide surface where the slider head contacts the guide block is an inclined surface.

[0016] Beneficial effects of the present invention: the clamping mechanism of the present invention is symmetrically arranged. When the sliding cover contacts the side of the object, the sliding cover slides into the shell, and the slider is arranged in the first through groove of the shell and the second through groove of the connecting rod. When the sliding cover slides, the slider heads at both ends of the slider slide on the guide blocks, at which time the connecting rod is driven to shrink toward the inclined cover surface, and the clamping plate on the connecting rod is clamped.

[0017] Another object of the present invention is to provide a relay dust cover, which aims to solve the problem of coal ash from thermal power plants entering the relay and affecting the safety of the relay.

[0018] To solve the above technical problems, the present invention also provides the following technical solutions: a relay dust cover, which includes a clamping mechanism; and a cover body, wherein the shell is arranged inside the cover body, and the cover body includes a soft cover and a bottom frame, and the soft cover is arranged on the bottom frame.

[0019] As a preferred solution of the relay dust cover of the present invention, the soft cover includes a soft edge, the soft edge is arranged at the bottom end of the soft cover, the bottom frame includes a connecting hole and a positioning inner groove, the connecting hole is arranged on the side of the bottom frame, the positioning inner groove is arranged in the connecting hole, and the limit block is arranged in the positioning inner groove.

[0020] The relay dustproof protective cover of the present invention has the following beneficial effects: the relay is plugged into the relay base, the cover body is sleeved on the relay, the soft edge fills the gap between the relay and the relay base, the coal ash is blocked by the bottom frame and the soft edge, the upper limit block of the shell is set in the positioning inner groove of the bottom frame, the sliding cover contacts the relay so that the symmetrically arranged clamping plates clamp the relay base respectively, so that the dustproof protective cover effectively prevents coal ash from entering. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1 It is a cross-sectional view of the overall structure of the clamping mechanism.

[0023] Figure 2 It is a schematic diagram of the connection between the housing and the connecting rod of the clamping mechanism.

[0024] Figure 3 A cross-sectional view of the slide cover of the clamping mechanism.

[0025] Figure 4 Cross-sectional view of the slider of the clamping mechanism.

[0026] Figure 5It is a cross-sectional view of the internal structure of the clamping mechanism in the clamping state.

[0027] Figure 6 It is a cross-sectional view of the internal structure of the clamping mechanism in the released state.

[0028] Figure 7 It is the overall structural side view of the relay dust cover.

[0029] Figure 8 It is a cross-sectional view of the overall structure of the relay dust cover.

[0030] Fig. 9 This is a cross-sectional view of the relay dust cover.

[0031] Fig.10 This is a partial enlarged view of the cover of the relay dust cover. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] Reference Figure 1 , which is the first embodiment of the present invention, provides a clamping mechanism, which includes a shell 101, a sliding cover 102, a connecting rod 103 and a slider 104, and the shell 101, the sliding cover 102, the connecting rod 103 and the slider 104 are arranged in mirror symmetry.

[0037] Preferably, the shell 101, the sliding cover 102, the connecting rod 103 and the slider 104, the sliding cover 102 is slidably connected to the shell 101, the connecting rod 103 is slidably connected to the shell 101, the slider 104 is movably connected to the sliding cover 102, and the slider 104 is also movably connected to the connecting rod 103. When the sliding cover 102 slides into the shell 101, the connecting rod 103 is squeezed by the slider 104 and shrinks into the shell 101 at the same time.

[0038] When in use, the sliding cover 102 partially extends out of the shell 101 when it is not clamped. When one side of the sliding cover 102 contacts the side of the object, that is, the sliding cover 102 slides into the shell 101, the slider 104 is movably connected to the sliding cover 102, and the connecting rod 103 is squeezed by the slider 104. The connecting rod 103 also shrinks into the shell 101 at the same time. The shell 101, the sliding cover 102, the connecting rod 103 and the slider 104 are arranged in mirror symmetry, and the symmetrically arranged connecting rod 103 is clamped.

[0039] Example 2

[0040] Reference Figure 1 to Figure 6 , which is the second embodiment of the present invention, and is different from the first embodiment in that: the housing 101 includes a limit block 101a, a collar 101b and a sleeve column 101c, the limit block 101a is arranged on the housing 101, the collar 101b is arranged on one side of the limit block 101a, and the contact surface between the limit block 101a and the collar 101b extends out to a certain height, the sleeve column 101c is arranged on the same side of the collar 101b, the sleeve column 101c is arranged at the center of the collar 101b, and the sleeve column 101c has a through hole inside, and the connecting rod 103 is arranged in the sleeve column 101c, and the sliding cover 102 is slidably connected in the collar 101b.

[0041] Furthermore, guide grooves 101b-1 are provided on both horizontal sides of the inner wall of the collar 101b, and the sliding cover 102 is slidably connected to the collar 101b through the guide grooves 101b-1. The sleeve column 101c is provided with a first through groove 101c-1.

[0042] Preferably, the sliding cover 102 includes an inclined cover surface 102a, a guide block 102b and a limit strip 102c. The inclined cover surface 102a is arranged on the opposite side of the opening of the sliding cover 102, and the inclined surface facilitates the disengagement of the clamping mechanism. The guide block 102b is arranged on the inner wall of the sliding cover 102, and the side of the guide block 102b relative to the center of the sliding cover 102 is an inclined surface. At least two guide blocks 102b are arranged and are centrally symmetrical, that is, the inclined surfaces of the guide blocks 102b are centrally symmetrical, and the inclined surfaces of the guide blocks 102b are arranged at 180° relative to each other. The limit strip 102c is arranged on the horizontal outer wall of the sliding cover 102, and the limit strip 102c is slidably connected to the guide groove 101b-1.

[0043] Furthermore, a connecting ring 102a-1 is provided on the opening side of the inclined cover surface 102a relative to the sliding cover 102. The connecting ring 102a-1 is an inclined ring. The opening side of the connecting ring 102a-1 is parallel to the opening side of the sliding cover 102. One end of the connecting rod 103 is arranged in the connecting ring 102a-1.

[0044] Preferably, the connecting rod 103 includes a block 103a, an elastic member 103b, a second through groove 103c and a splint 103d, the block 103a is arranged at one end of the connecting rod 103, the block 103a prevents the connecting rod 103 from falling off easily during movement, the splint 103d is arranged at the other end of the connecting rod 103, the elastic member 103b is arranged on the side of the block 103a opposite to the splint 103d, the contracted length of the connecting rod 103 is the movable length of the elastic member 103b, the second through groove 103c is arranged on the rod body of the connecting rod 103, and the length of the first through groove 101c-1 is greater than the length of the second through groove 103c.

[0045] Preferably, the slider 104 includes a slider head 104a and a block body 104b, the slider head 104a is centrally symmetrically arranged at both ends of the block body 104b, the block body 104b is inclined, the inclination angle of the second through groove 103c is the same as that of the block body 104b, and the block body 104b is arranged in the first through groove 101c-1 and the second through groove 103c.

[0046] Furthermore, the guide surface 104a-1 where the slider head 104a contacts the guide block 102b is an inclined surface.

[0047] When in use, the inclined cover surface 102a contacts one side of the object and then moves toward the inside of the shell 101, and the limit strip 102c slides in the guide groove 101b-1, so that the sliding cover 102 slides horizontally, and the block body 104b is arranged in the first through groove 101c-1 and the second through groove 103c. The block body 104b is inclined, and the inclination angle of the second through groove 103c is the same as that of the block body 104b, and the length of the first through groove 101c-1 is greater than the length of the second through groove 103c. When the sliding cover 102 slides, the guide surface 104a-1 contacts the inclined surface on the guide block 102b, and the slider 104 slides in the first through groove 101c-1. At this time, the slider 104 drives the connecting rod 103 to retract toward the side of the inclined cover surface 102a. The shell 101, the sliding cover 102, the connecting rod 103 and the slider 104 are arranged in mirror symmetry, so the symmetrically arranged clamping plate 103d produces a clamping effect.

[0048] Example 3

[0049] Reference Figures 1 to 10, which is the third embodiment of the present invention, and is different from the first embodiment in that: it also includes a cover body 201, the shell 101 is arranged in the cover body 201, the cover body 201 includes a soft cover 201a and a bottom frame 201b, the soft cover 201a is arranged on the bottom frame 201b, and in this embodiment, the soft cover 201a is preferably made of silicone material, the bottom frame 201b is sleeved on the boss connecting the relay base and the relay, the relay is plugged into the boss of the relay base, when the relay base is plugged into the relay, the relay is closely spaced from both sides of the relay base, and there are grooves on both sides of the relay base, and the clamping mechanism is arranged according to the structure of the relay base.

[0050] Furthermore, the soft cover 201a includes a soft edge 201a-1, which is arranged at the bottom end of the soft cover 201a, and the soft edge 201a-1 fills the gap when the relay and the relay base are plugged in. The bottom frame 201b includes a connecting hole 201b-1 and a positioning inner groove 201b-2, the connecting hole 201b-1 is arranged on the side of the bottom frame 201b, the positioning inner groove 201b-2 is arranged in the connecting hole 201b-1, and the limit block 101a is arranged in the positioning inner groove 201b-2.

[0051] When in use, the limit block 101a is set in the positioning inner groove 201b-2, the shell 101 is set to limit, the bottom frame 201b is sleeved on the boss connecting the relay base and the relay, and the soft edge 201a-1 fills the gap when the relay and the relay base are plugged in. At the same time, the inclined cover surface 102a contacts the side of the boss of the relay base, so that the slider 104 slides in the first through groove 101c-1, and the slider 104 drives the connecting rod 103 to shrink toward the side of the inclined cover surface 102a. The symmetrically arranged clamping plates 103d clamp the side walls of the grooves on both sides of the relay base, so that the coal ash is blocked by the silicone soft cover 201a and cannot enter the relay.

[0052] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0053] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0054] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A clamping mechanism, characterized in that: include, A housing (101), a sliding cover (102), a connecting rod (103) and a slider (104); the sliding cover (102) is slidably connected to the housing (101); the connecting rod (103) is slidably connected to the housing (101); the slider (104) is movably connected to the sliding cover (102); the slider (104) is also movably connected to the connecting rod (103); the housing (101), the sliding cover (102), the connecting rod (103) and the slider (104) are symmetrically arranged.

2. The clamping mechanism according to claim 1, characterized in that: The housing (101) comprises a limit block (101a), a collar (101b) and a sleeve column (101c); the limit block (101a) is arranged on the housing (101); the collar (101b) is arranged on one side of the limit block (101a); the sleeve column (101c) is arranged on the same side of the collar (101b); the sleeve column (101c) is arranged at the center of the collar (101b); and the sliding cover (102) is slidably connected in the collar (101b).

3. The clamping mechanism according to claim 2, characterized in that: Guide grooves (101b-1) are also provided on both horizontal sides of the inner wall of the collar (101b); the sliding cover (102) is slidably connected to the collar (101b) via the guide grooves (101b-1); and a first through groove (101c-1) is provided on the sleeve column (101c).

4. The clamping mechanism according to claim 1 or 3, characterized in that: The sliding cover (102) comprises an inclined cover surface (102a), a guide block (102b) and a limit strip (102c); the inclined cover surface (102a) is arranged on the side opposite to the opening of the sliding cover (102); the guide block (102b) is arranged on the inner wall of the sliding cover (102); the side of the guide block (102b) relative to the center of the sliding cover (102) is an inclined surface; at least two guide blocks (102b) are arranged and are centrally symmetrical; the limit strip (102c) is arranged on the horizontal outer wall of the sliding cover (102); and the limit strip (102c) is slidably connected to the guide groove (101b-1).

5. The clamping mechanism according to claim 4, characterized in that: A connecting ring (102a-1) is arranged on the opening side of the inclined cover surface (102a) relative to the sliding cover (102), and one end of the connecting rod (103) is arranged in the connecting ring (102a-1).

6. The clamping mechanism according to claim 1 or 5, characterized in that: The connecting rod (103) comprises a stopper (103a), an elastic member (103b), a second through-slot (103c) and a clamping plate (103d); the stopper (103a) is arranged at one end of the connecting rod (103); the clamping plate (103d) is arranged at the other end of the connecting rod (103); the elastic member (103b) is arranged on the side of the stopper (103a) opposite to the clamping plate (103d); and the second through-slot (103c) is arranged on the rod body of the connecting rod (103).

7. The clamping mechanism according to claim 6, characterized in that: The slider (104) comprises a slider head (104a) and a block body (104b), wherein the slider head (104a) is centrally symmetrically arranged at two ends of the block body (104b), the block body (104b) is inclined, and the block body (104b) is arranged in the first through groove (101c-1) and the second through groove (103c).

8. The clamping mechanism according to claim 7, characterized in that: The guide surface (104a-1) where the slider head (104a) contacts the guide block (102b) is an inclined surface.

9. A relay dust cover, characterized in that: comprising the clamping mechanism according to any one of claims 1 to 8; and A cover body (201), wherein the shell (101) is arranged inside the cover body (201), and the cover body (201) comprises a soft cover (201a) and a bottom frame (201b), and the soft cover (201a) is arranged on the bottom frame (201b).

10. The relay dust cover according to claim 9, characterized in that: The soft cover (201a) comprises a soft edge (201a-1), wherein the soft edge (201a-1) is arranged at the bottom end of the soft cover (201a); the bottom frame (201b) comprises a connecting hole (201b-1) and a positioning inner groove (201b-2), wherein the connecting hole (201b-1) is arranged at a side of the bottom frame (201b); the positioning inner groove (201b-2) is arranged in the connecting hole (201b-1); and the limiting block (101a) is arranged in the positioning inner groove (201b-2).

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