Anti-interference device of shear pin sensor

Abstract

The utility model relates to the technical field of shear pin sensors, in particular to an anti-interference device of a shear pin sensor, which comprises an anti-interference sleeve and a shear pin sensor body matched with the anti-interference sleeve. And a high-temperature-resistant glass fiber cloth material layer is arranged on the outer wall of the tinned copper mesh material layer. According to the utility model, the anti-interference sleeve comprises the tinned copper mesh material layer, the glass fiber cloth material layer and the polyvinyl chloride material layer, external signals can be shielded by arranging the tinned copper mesh material layer, and the wear resistance of the whole anti-interference sleeve can be stronger by arranging the glass fiber cloth material layer; the shear pin sensor body can be protected by arranging the polyvinyl chloride material layer, the wiring end of the shear pin sensor body can be protected, the anti-interference sleeve can be installed by arranging the two limiting mechanisms, and the anti-interference sleeve can be conveniently disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of shear pin sensors, in particular to an anti-interference device for a shear pin sensor. Background Art

[0002] The shear pin sensor is also called the shear pin signaler. The shear pin signaler is made of ceramic or brittle polystyrene materials. It is divided into normally open and normally closed types. It is mainly used as a signaling element when the shear pin of the turbine guide blade breaks. It provides signal alarm for the shear pin signal device, which is convenient for the on-duty personnel to handle in time.

[0003] During the production process, the shear pin signaler often needs to be equipped with a corresponding anti-interference structure to prevent external signals from interfering with the shear pin signaler. At the same time, it can also protect the internal electronic components of the shear pin signaler. The anti-interference structure used on the market is usually a protective shell, which is usually fixed on the outer wall of the shear pin signaler. When the protective shell is damaged, it is not convenient to remove it or replace it. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-interference device for a shear pin sensor so as to solve the problem raised in the above background technology that the anti-interference structure used in the market is usually a protective shell, and the protective shell is usually fixedly mounted on the outer wall of the shear pin signal device. When the protective shell is damaged, it is not convenient to remove it or replace it.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An anti-interference device for a shear pin sensor comprises an anti-interference sleeve and a shear pin sensor body matched with the anti-interference sleeve, the anti-interference sleeve comprises a tinned copper mesh material layer for shielding signals, a glass fiber cloth material layer for high temperature resistance is arranged on the outer wall of the tinned copper mesh material layer, a polyvinyl chloride material layer for protecting the shear pin sensor body is arranged on the outer wall of the glass fiber cloth material layer, a cylinder cover threadedly connected thereto is arranged on the right side of the anti-interference sleeve, the shear pin sensor body is located inside the tinned copper mesh material layer and the cylinder cover and is slidably connected to the inner wall of the tinned copper mesh material layer, and a wire reel for guiding the wire of the shear pin sensor body is rotatably connected to the right side surface of the cylinder cover, and further comprises:

[0007] Two limiting mechanisms are symmetrically arranged on the circumferential outer wall of the polyvinyl chloride material layer, and are used to limit the shear pin sensor body. The limiting mechanism includes an L-shaped vertical plate fixed on the circumferential outer wall of the polyvinyl chloride material layer, a rotating drum rotatably connected to the horizontal plate end of the vertical plate, a screw threadedly connected to the rotating drum, a moving column coaxially fixed on the surface of the screw on one side close to the polyvinyl chloride material layer, a connecting rod fixed on the outer wall of the moving column and slidably connected to the vertical plate end of the vertical plate, and a limiting rod coaxially fixed on the surface of the moving column on one side close to the polyvinyl chloride material layer. The limiting rod penetrates the circumferential outer wall of the anti-interference sleeve and is slidably plugged into the shear pin sensor body.

[0008] As a preferred embodiment, the circumferential outer wall of the polyvinyl chloride material layer is provided with two through holes connected to its inner cavity, the circumferential outer wall of the glass fiber cloth material layer is provided with two through grooves corresponding to the positions of the through holes on the same side of the circumferential outer wall of the polyvinyl chloride material layer and matched in size, the circumferential outer wall of the tinned copper mesh material layer is provided with two sockets corresponding to the positions of the through grooves on the same side of the outer wall of the glass fiber cloth material layer and matched in size, the outer wall of the shear pin sensor body is provided with two limiting holes corresponding to the positions of the sockets on the same side of the outer wall of the tinned copper mesh material layer and matched in size, the limiting rod sequentially penetrates the through holes on the same side of the outer wall of the polyvinyl chloride material layer, the through grooves on the same side of the outer wall of the glass fiber cloth material layer and the sockets on the same side of the outer wall of the tinned copper mesh material layer, and is slidably connected with the limiting holes on the same side of the outer wall of the shear pin sensor body.

[0009] As a preferred embodiment, two sliding grooves are provided on the outer wall of the shear pin sensor body, a plurality of moving rods are fixed on the inner wall of the polyvinyl chloride material layer, and a sliding block is fixed on the surface of the moving rod close to the shear pin sensor body and is slidably connected to the sliding groove on the same side of the outer wall of the shear pin sensor body.

[0010] As a preferred embodiment, the inner wall of the cylinder cover is provided with an internal thread near the left end, and the circumferential outer wall of the polyvinyl chloride material layer is provided with an external thread matching the internal thread on the inner wall of the cylinder cover near the right end.

[0011] As a preferred embodiment, a guide groove is provided on the left side surface of the vertical plate end of the vertical plate, and a guide block slidably connected to the guide groove on the left side surface of the vertical plate end of the same side is fixed on the right side surface of the connecting rod.

[0012] As a preferred embodiment, a rotating column is coaxially fixed to a surface of the rotating drum away from the anti-interference sleeve, a rotating disk is coaxially fixed to a surface of the rotating column away from the rotating drum, and a shifting column is coaxially fixed to a surface of the rotating disk away from the rotating column.

[0013] As a preferred embodiment, the central axis of the cylinder cover and the central axis of the wire reel are located on the same horizontal line, and the right side surface of the wire reel is provided with two wire holes which are symmetrical to each other and connected with the inner cavity of the cylinder cover, and wire tubes are embedded in the two wire holes on the right side surface of the cylinder cover, and the wire tubes correspond to the positions of the wiring terminals on the same side of the shear pin sensor body and are matched in size.

[0014] As a preferred embodiment, the longitudinal section of the slide groove on the outer wall of the shear pin sensor body is in an I-shape, and the shape of the slider is in an I-shape that matches the shape of the slide groove on the outer wall of the shear pin sensor body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The anti-interference sleeve in the utility model includes a tinned copper mesh material layer, a glass fiber cloth material layer and a polyvinyl chloride material layer. The tinned copper mesh material layer can be provided to shield external signals, and the glass fiber cloth material layer can be provided to make the wear resistance of the entire anti-interference sleeve stronger. The polyvinyl chloride material layer can be provided to protect the shear pin sensor body. The design of the tube cover, the wire reel and the two wire tubes can guide the wires of the shear pin sensor body, so as to protect the wiring terminals of the shear pin sensor body. The anti-interference sleeve can be installed by providing two limit mechanisms, and it is also convenient to disassemble the anti-interference sleeve.

[0017] 2. In the utility model, two slide grooves are provided on the outer wall of the shear pin sensor body, a plurality of moving rods are fixed on the inner wall of the polyvinyl chloride material layer, and a sliding block is fixed on the surface of the moving rod close to the shear pin sensor body and is slidably connected to the slide groove on the same side of the outer wall of the shear pin sensor body, which can guide the movement of the anti-interference sleeve, thereby facilitating the installation of the anti-interference sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the internal structure of the anti-interference sleeve in the utility model;

[0020] Figure 3 It is an enlarged view of point A in the utility model;

[0021] Figure 4 It is one of the partial explosion diagrams in the utility model;

[0022] Figure 5 This is the second partial explosion diagram in the utility model;

[0023] Figure 6 This is the third partial explosion diagram in the utility model;

[0024] Figure 7 It is a schematic diagram of the overall structure of the limiting mechanism in the utility model;

[0025] Figure 8 It is an exploded view of the limiting mechanism in the utility model.

[0026] The meaning of each number in the figure is:

[0027] 1. Anti-interference sleeve; 11. Tinned copper mesh material layer; 12. Glass fiber cloth material layer; 13. Polyvinyl chloride material layer; 2. Cylinder cover; 3. Shear pin sensor body; 4. Wire reel; 5. Wire tube; 6. Moving rod; 7. Limiting mechanism; 71. Vertical plate; 72. Rotating drum; 73. Screw; 74. Moving column; 75. Connecting rod; 76. Limiting rod; 77. Guide block; 78. Rotating column; 79. Rotating disk; 710. Shifting column; 8. Slider. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 8 The utility model provides a technical solution: an anti-interference device for a shear pin sensor, comprising an anti-interference sleeve 1 and a shear pin sensor body 3 matched with the anti-interference sleeve 1, the anti-interference sleeve 1 comprising a tinned copper mesh material layer 11 for shielding signals, a glass fiber cloth material layer 12 for high temperature resistance is arranged on the outer wall of the tinned copper mesh material layer 11, a polyvinyl chloride material layer 13 for protecting the shear pin sensor body 3 is arranged on the outer wall of the glass fiber cloth material layer 12, a cylinder cover 2 threadedly connected thereto is arranged on the right side of the anti-interference sleeve 1, the shear pin sensor body 3 is located inside the tinned copper mesh material layer 11 and the cylinder cover 2 and is slidably connected to the inner wall of the tinned copper mesh material layer 11, and a wire reel 4 for guiding the wires of the shear pin sensor body 3 is rotatably connected to the right side surface of the cylinder cover 2, and further comprising:

[0030] Two limiting mechanisms 7 are symmetrically arranged on the circumferential outer wall of the polyvinyl chloride material layer 13, and are used to limit the shear pin sensor body 3. The limiting mechanism 7 includes a vertical plate 71 fixed on the circumferential outer wall of the polyvinyl chloride material layer 13 and in an L-shaped shape, a rotating drum 72 rotatably connected to the horizontal plate end of the vertical plate 71, a screw 73 threadedly connected to the rotating drum 72, a moving column 74 coaxially fixed to the surface of the screw 73 on one side close to the polyvinyl chloride material layer 13, a connecting rod 75 fixed on the outer wall of the moving column 74 and slidably connected to the vertical plate end of the vertical plate 71, and a limiting rod 7 coaxially fixed to the surface of the moving column 74 on one side close to the polyvinyl chloride material layer 13. 6. The limit rod 76 penetrates the circumferential outer wall of the anti-interference sleeve 1 and is slidably plugged with the shear pin sensor body 3. The anti-interference sleeve 1 includes a tinned copper mesh material layer 11, a glass fiber cloth material layer 12 and a polyvinyl chloride material layer 13. The tinned copper mesh material layer 11 can shield external signals, and the glass fiber cloth material layer 12 can make the wear resistance of the entire anti-interference sleeve 1 stronger. The polyvinyl chloride material layer 13 can protect the shear pin sensor body 3. The two limit mechanisms 7 can be used to install the anti-interference sleeve 1, and it is also convenient to disassemble the anti-interference sleeve 1.

[0031] In this embodiment, two through holes connected to its inner cavity are provided on the circumferential outer wall of the polyvinyl chloride material layer 13, two through grooves corresponding to the positions of the through holes on the same side of the circumferential outer wall of the polyvinyl chloride material layer 13 and matched in size are provided on the circumferential outer wall of the glass fiber cloth material layer 12, two plug holes corresponding to the positions of the through grooves on the same side of the outer wall of the glass fiber cloth material layer 12 and matched in size are provided on the circumferential outer wall of the tinned copper mesh material layer 11, and two limiting holes corresponding to the positions of the plug holes on the same side of the outer wall of the tinned copper mesh material layer 11 and matched in size are provided on the outer wall of the shear pin sensor body 3, and the limiting rod 76 successively penetrates the through holes on the same side of the outer wall of the polyvinyl chloride material layer 13, the through grooves on the same side of the outer wall of the glass fiber cloth material layer 12 and the plug holes on the same side of the outer wall of the tinned copper mesh material layer 11, and is slidably connected with the limiting holes on the same side of the outer wall of the shear pin sensor body 3, so that the anti-interference sleeve 1 and the shear pin sensor body 3 can be limited.

[0032] In addition, two sliding grooves are provided on the outer wall of the shear pin sensor body 3, and a plurality of moving rods 6 are fixed on the inner wall of the polyvinyl chloride material layer 13, and a slider 8 is fixed on the side surface of the moving rod 6 close to the shear pin sensor body 3 and is slidably connected to the sliding groove on the same side of the outer wall of the shear pin sensor body 3, which can guide the movement of the anti-interference sleeve 1, thereby facilitating the installation of the anti-interference sleeve 1.

[0033] Furthermore, an internal thread is provided on the inner wall of the cylinder cover 2 near the left end, and an external thread matching the internal thread on the inner wall of the cylinder cover 2 is provided on the circumferential outer wall of the polyvinyl chloride material layer 13 near the right end, so that the anti-interference sleeve 1 and the cylinder cover 2 can be smoothly connected together.

[0034] Specifically, a guide groove is provided on the left side surface of the vertical plate end of the vertical plate 71, and a guide block 77 is fixed on the right side surface of the connecting rod 75, which is slidably connected to the guide groove on the left side surface of the vertical plate end of the vertical plate 71 on the same side, so as to guide the movement of the connecting rod 75 and further guide the movement of the limit rod 76.

[0035] It is worth noting that a rotating column 78 is coaxially fixed to the surface of the rotating drum 72 away from the anti-interference sleeve 1, a rotating disk 79 is coaxially fixed to the surface of the rotating column 78 away from the rotating drum 72 on the same side, and a shifting column 710 is coaxially fixed to the surface of the rotating disk 79 away from the rotating column 78 on the same side, thereby facilitating driving the rotating drum 72 to rotate.

[0036] It is worth mentioning that the central axis of the cylinder cover 2 and the central axis of the wire reel 4 are located on the same horizontal line, and the right side surface of the wire reel 4 is provided with two wire holes which are symmetrical to each other and connected with the inner cavity of the cylinder cover 2, and the insides of the two wire holes on the right side surface of the cylinder cover 2 are both embedded with wire tubes 5, and the wire tubes 5 correspond to the positions of the wiring terminals on the same side of the shear pin sensor body 3 and are adapted in size. Through the design of the cylinder cover 2, the wire reel 4 and the two wire tubes 5, the wires of the shear pin sensor body 3 can be guided, thereby protecting the wiring terminals of the shear pin sensor body 3.

[0037] It is worth emphasizing that the longitudinal cross-sectional shape of the slide groove on the outer wall of the shear pin sensor body 3 is I-shaped, and the shape of the slider 8 is I-shaped which is compatible with the shape of the slide groove on the outer wall of the shear pin sensor body 3, which can make the connection between the slider 8 and the same-side slide groove on the outer wall of the shear pin sensor body 3 tighter, and thus indirectly make the connection between the shear pin sensor body 3 and the anti-interference sleeve 1 tighter.

[0038] Among them, the shear pin sensor body 3 involved in this embodiment is the existing technology, and its structure and working principle are well known to those skilled in the art, and will not be described in detail here.

[0039] In the specific use of this embodiment, when it is necessary to protect the shear pin sensor body 3, the anti-interference sleeve 1 and the shear pin sensor body 3 can be assembled first by using a plurality of sliders 8 and two slide grooves on the outer wall of the shear pin sensor body 3, and then the two dials 710 are used to rotate the two turntables 79 respectively, and the rotation of the turntable 79 drives the same-side rotating column 78 coaxially fixed thereto to rotate, and the rotation of the rotating column 78 drives the same-side rotating cylinder 72 coaxially fixed thereto to rotate, and the rotation of the rotating cylinder 72 drives the same-side screw 73 threadedly connected thereto to move, and the screw 73 moves the same-side moving column 74, the same-side connecting rod 75, the same-side guide block 77 and the same-side Under the guidance of the guide groove on the left side surface of the vertical plate end of the vertical plate 71, it moves in the direction of the anti-interference sleeve 1, and the movement of the screw 73 drives the moving column 74 coaxially fixed thereto to move, and the movement of the moving column 74 drives the limiting rod 76 coaxially fixed thereto to move, and the limiting rod 76 sequentially penetrates the same-side through hole on the outer wall of the polyvinyl chloride material layer 13, the same-side through groove on the outer wall of the glass fiber cloth material layer 12, and the same-side plug hole on the outer wall of the tinned copper mesh material layer 11. When the limiting rod 76 is completely slidably plugged into the same-side limiting hole on the outer wall of the shear pin sensor body 3, the two shifting columns 710 stop rotating, thereby completing the limiting work of the shear pin sensor body 3;

[0040] Then, the wires connected to the two terminals of the shear pin sensor body 3 are passed through the two wire tubes 5 respectively, and then the two wire tubes 5 are held and the tube cover 2 and the polyvinyl chloride material layer 13 are threaded together to prevent the wires from being twisted together and damaged during the installation of the tube cover 2, thereby completing the installation of the anti-interference device.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-interference device for a shear pin sensor, comprising an anti-interference sleeve (1) and a shear pin sensor body (3) matched with the anti-interference sleeve (1), characterized in that: The anti-interference sleeve (1) comprises a tinned copper mesh material layer (11) for shielding signals, a glass fiber cloth material layer (12) for high temperature resistance is arranged on the outer wall of the tinned copper mesh material layer (11), a polyvinyl chloride material layer (13) for protecting the shear pin sensor body (3) is arranged on the outer wall of the glass fiber cloth material layer (12), a cylinder cover (2) threadedly connected thereto is arranged on the right side of the anti-interference sleeve (1), the shear pin sensor body (3) is located inside the tinned copper mesh material layer (11) and the cylinder cover (2) and is slidably connected to the inner wall of the tinned copper mesh material layer (11), and a wire reel (4) for guiding the wire of the shear pin sensor body (3) is rotatably connected to the right side surface of the cylinder cover (2), and further comprises: Two limiting mechanisms (7) are symmetrically arranged on the circumferential outer wall of the polyvinyl chloride material layer (13) and are used to limit the shear pin sensor body (3). The limiting mechanism (7) comprises an L-shaped vertical plate (71) fixed on the circumferential outer wall of the polyvinyl chloride material layer (13), a rotating cylinder (72) rotatably connected to the horizontal plate end of the vertical plate (71), a screw (73) threadedly connected to the rotating cylinder (72), a moving column (74) coaxially fixed to the surface of the screw (73) on one side close to the polyvinyl chloride material layer (13), a connecting rod (75) fixed on the outer wall of the moving column (74) and slidably connected to the vertical plate end of the vertical plate (71), and a limiting rod (76) coaxially fixed to the surface of the moving column (74) on one side close to the polyvinyl chloride material layer (13). The limiting rod (76) penetrates the circumferential outer wall of the anti-interference sleeve (1) and is slidably plugged into the shear pin sensor body (3).

2. The anti-interference device for the shear pin sensor according to claim 1, characterized in that: The circumferential outer wall of the polyvinyl chloride material layer (13) is provided with two through holes communicating with its inner cavity; the circumferential outer wall of the glass fiber cloth material layer (12) is provided with two through grooves corresponding to the positions of the through holes on the same side of the circumferential outer wall of the polyvinyl chloride material layer (13) and having sizes that match; the circumferential outer wall of the tinned copper mesh material layer (11) is provided with two jacks corresponding to the positions of the through grooves on the same side of the outer wall of the glass fiber cloth material layer (12) and having sizes that match; Two limiting holes are provided on the outer wall of the shear pin sensor body (3), which correspond to the positions of the same-side plug holes on the outer wall of the tinned copper mesh material layer (11) and have matching sizes. The limiting rod (76) sequentially penetrates the same-side through hole on the outer wall of the polyvinyl chloride material layer (13), the same-side through groove on the outer wall of the glass fiber cloth material layer (12), and the same-side plug hole on the outer wall of the tinned copper mesh material layer (11), and is slidably plugged into the same-side limiting hole on the outer wall of the shear pin sensor body (3).

3. The anti-interference device for the shear pin sensor according to claim 1, characterized in that: Two sliding grooves are provided on the outer wall of the shear pin sensor body (3), a plurality of moving rods (6) are fixed on the inner wall of the polyvinyl chloride material layer (13), and a sliding block (8) is fixed on the surface of one side of the moving rod (6) close to the shear pin sensor body (3) and is slidably connected to the sliding groove on the same side of the outer wall of the shear pin sensor body (3).

4. The anti-interference device for the shear pin sensor according to claim 1, characterized in that: The inner wall of the cylinder cover (2) is provided with an internal thread near the left end, and the circumferential outer wall of the polyvinyl chloride material layer (13) is provided with an external thread matching the internal thread on the inner wall of the cylinder cover (2) near the right end.

5. The anti-interference device for the shear pin sensor according to claim 1, characterized in that: A guide groove is provided on the left side surface of the vertical plate end of the vertical plate (71), and a guide block (77) is fixed on the right side surface of the connecting rod (75) and is slidably connected to the guide groove on the left side surface of the vertical plate end of the vertical plate (71) on the same side.

6. The anti-interference device for the shear pin sensor according to claim 1, characterized in that: A rotating column (78) is coaxially fixed to a surface of a side of the rotating cylinder (72) away from the anti-interference sleeve (1), a rotating disk (79) is coaxially fixed to a surface of a side of the rotating cylinder (72) away from the same side, and a shifting column (710) is coaxially fixed to a surface of a side of the rotating disk (79) away from the same side rotating column (78).

7. The anti-interference device for the shear pin sensor according to claim 1, characterized in that: The central axis of the cylinder cover (2) and the central axis of the wire reel (4) are located on the same horizontal line. The right side surface of the wire reel (4) is provided with two wire holes which are symmetrical to each other and communicate with the inner cavity of the cylinder cover (2). The insides of the two wire holes on the right side surface of the cylinder cover (2) are both embedded with wire tubes (5). The wire tubes (5) correspond to the positions of the wiring terminals on the same side of the shear pin sensor body (3) and are adapted in size.

8. The anti-interference device for the shear pin sensor according to claim 3, characterized in that: The longitudinal section of the slide groove on the outer wall of the shear pin sensor body (3) is in the shape of an I-beam, and the shape of the slider (8) is in the shape of an I-beam that matches the shape of the slide groove on the outer wall of the shear pin sensor body (3).

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