Inverted rainproof device for pull rope displacement sensor

Abstract

The utility model relates to the technical field of rainproof devices, and discloses an inverted rainproof device of a stay cord displacement sensor, which comprises a cover body and a top cover, the top cover is arranged between the cover body and the top cover and can be opened and closed along the longitudinal direction, the top cover is arranged at the top of the cover body, and a stay cord hole is arranged at the lower part of the outer side of the cover body; the sensor body is installed on the inner side of the top cover, one end of a pull rope body penetrates through the pull rope hole to the outer side of the cover body, one end of a signal line penetrates through the bottom of the cover body to the outer side of the cover body, and pulley mechanisms used for guiding the pull rope body are arranged on the two sides of the pull rope hole. The sensor body is installed on the inner side of the top cover, after the top cover is closed, the sensor body can work normally, after the top cover is opened, the sensor body synchronously moves to the outer side of the cover body along with overturning of the top cover, a worker can conveniently maintain and overhaul the sensor body, and operation is very convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of rainproof devices, in particular to an inverted rainproof device for a pull-rope displacement sensor. Background Art

[0002] The draw rope displacement sensor is a linear displacement sensor with small installation size and compact structure. The measuring stroke ranges from one millimeter to tens of meters. It consists of a stretchable stainless steel draw rope wrapped around a threaded hub, which is connected to a precision rotary sensor to convert mechanical motion into an electrical signal that can be measured, recorded or transmitted.

[0003] When in use, the pull rope displacement sensor is installed in a fixed position, one end of the pull rope is tied to the moving object, and the straight-line movement direction of the pull rope is aligned with the moving axis of the moving object; the pull rope stretches and contracts during movement, the internal spring ensures the tension of the pull rope, the wheel hub drives the precision rotary sensor to rotate, and an electrical signal proportional to the distance the pull rope moves is output through the signal line to obtain the displacement, direction or speed of the moving object. Among them, when installing the pull rope displacement sensor, attention must be paid to the running angle of the pull rope, and the pull rope should be stretched and contracted horizontally or vertically as much as possible during operation to ensure measurement accuracy and the life of the pull rope.

[0004] When the pull-wire displacement sensor is directly installed on the project site without any protective device, due to the influence of the on-site environment, the signal cable and internal components are prone to rust, aging, moisture and damage under long-term wind, sun and rain, resulting in poor measurement and control accuracy. Therefore, it can be installed on the project site by adding additional protective devices to avoid the defect of direct exposure.

[0005] The existing rainproof devices for rope-drawn displacement sensors on the market have certain windproof, sun-proof and rainproof effects, but the ventilation and heat dissipation effects of the rainproof devices are poor, and water is easily accumulated at the bottom of the rainproof devices. There are still problems such as rust and aging of signal cables and internal components, damage due to moisture, and poor measurement and control accuracy. In addition, the rope-drawn displacement sensor is installed on the bottom plate of the rainproof device, which is troublesome to maintain and repair. Moreover, whether it is directly installed in the exposed state or equipped with an existing rainproof device, the rope-drawn displacement sensor is restricted by the requirement that the rope must be stretched and contracted horizontally or vertically when working, and cannot adapt to the requirements of multi-angle operation directions of complex working conditions of engineering equipment. Utility Model Content

[0006] The problem to be solved by the utility model is to provide an inverted rainproof device for a pull-rope displacement sensor. The sensor body is installed on a top cover. After the top cover is closed, the sensor body works normally. After the top cover is opened, the sensor body can be maintained and repaired, and the operation is very convenient.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A pull-rope displacement sensor inverted rainproof device comprises a cover body and a top cover which can be flipped and opened along the longitudinal direction between the cover body, the top cover is arranged on the top of the cover body, and a pull-rope hole is opened at the lower part of the outer side of the cover body; the sensor body is installed on the inner side of the top cover, one end of the pull-rope body passes through the pull-rope hole to the outer side of the cover body, one end of the signal line passes through the bottom of the cover body to its outer side, and pulley mechanisms for guiding the pull-rope body are arranged on both sides of the pull-rope hole.

[0009] In a preferred embodiment of the utility model, the top cover is sleeved on the top of the cover body, one end of the top cover is rotatably connected to the cover body via a hinge, and a handle is fixedly installed on the top of the top cover.

[0010] In a preferred embodiment of the utility model, a bayonet is provided on the peripheral side of the cover body, a spring clip corresponding to the position of the bayonet is provided on the inner side of the top cover, and when the top cover is closed with the cover body, one end of the spring clip is embedded in the bayonet.

[0011] In a preferred embodiment of the utility model, an inclined bottom plate is installed inside the cover body, the signal line passes through the bottom plate, and the lower end of the bottom plate is pressed against the inner wall of the cover body corresponding to the position of the pull rope hole.

[0012] In a preferred embodiment of the utility model, the pulley mechanism includes a first pulley assembly and a second pulley assembly, and the first pulley assembly is installed on the bottom plate, and the second pulley assembly is arranged on the outer side of the cover body.

[0013] In a preferred embodiment of the utility model, the first pulley assembly includes a first bracket fixedly connected to the base plate, and a first wheel body is rotatably mounted on one side of the first bracket.

[0014] In a preferred embodiment of the utility model, the second pulley assembly includes a second bracket fixedly mounted on the outside of the cover body, a second wheel body is rotatably mounted on one side of the second bracket, and the second wheel body and the first wheel body are in the same plane.

[0015] In a preferred embodiment of the utility model, a base is rotatably mounted on the bottom of the cover body, and a rotating support is arranged between the base and the cover body.

[0016] In a preferred embodiment of the present invention, the base and the center position of the bottom of the cover body are connected by a fastener, and the signal line passes through the fastener axially to the lower side of the base.

[0017] In a preferred embodiment of the present invention, shutters are arranged on both sides of the cover body. Beneficial Effects

[0018] (1) In the utility model, the sensor body is installed on the inner side of the top cover. When the top cover is closed, the sensor body can work normally. When the top cover is opened, the sensor body moves to the outside of the cover body synchronously with the flipping of the top cover, so that the staff can perform maintenance and repair on the sensor body, and the operation is very convenient.

[0019] (2) In the present invention, by providing an inclined bottom plate inside the cover body, water accumulation inside the cover body can be reduced. Any water accumulation will be discharged along the pull rope hole, thereby reducing the possibility of rust, aging, moisture damage, poor measurement and control accuracy of signal cables and internal components.

[0020] (3) In the utility model, the design of the first pulley assembly and the second pulley assembly inside and outside the cover body can break through the limitation that the pull rope body must be extended and retracted horizontally or vertically, so that the pull rope body can be extended and retracted at any angle within the range of 180 degrees above and below the horizontal line, and can also be extended and retracted at any angle within the range of 360 degrees in a circle, which greatly increases the scope of application of the equipment and enables it to better meet the requirements of multi-angle operation direction of complex working conditions of engineering equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the position structure of the pull rope hole and the bottom plate of the utility model;

[0024] Figure 4 It is a schematic diagram of the position structure of the first and second pulley assemblies of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the first pulley assembly of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the second pulley assembly of the utility model;

[0027] Figure 7 It is a structural schematic diagram of the bayonet and spring clamp of the utility model;

[0028] Among them, 1. cover body; 11. rope hole; 12. shutter; 13. bayonet; 2. top cover; 21. handle; 22. hinge; 23. spring clip; 3. sensor body; 31. rope body; 32. signal line; 4. bottom plate; 5. base; 6. rotating support; 7. fastener; 8. first pulley assembly; 81. first bracket; 82. first wheel body; 9. second pulley assembly; 91. second bracket; 92. second wheel body. DETAILED DESCRIPTION

[0029] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention. Embodiment 1

[0030] like Figure 1-Figure 4 As shown, a pull-wire displacement sensor inverted rainproof device comprises a cover body 1 and a top cover 2 arranged on the top of the cover body 1, the top of the cover body 1 is open, and the top cover 2 can be flipped and opened in the longitudinal direction relative to the cover body 1; a pull-wire hole 11 is opened at the lower part of the outer side of the cover body 1, and the sensor body 3 is installed on the inner side of the top cover 2, one end of the pull-wire body 31 passes through the pull-wire hole 11 to the outer side of the cover body 1, and one end of the signal line 32 passes through the bottom of the cover body 1 to its outer side, and pulley mechanisms for guiding the pull-wire body 31 are arranged on both sides of the pull-wire hole 11.

[0031] When the top cover 2 is closed on the cover body 1, the open end of the top cover 2 faces downward, and the sensor body 3 is located inside the cover body 1; when the top cover 2 is opened, it can be flipped 180 degrees around the axis of the hinge 22, so that the open end of the top cover 2 faces upward. At this time, the sensor body 3 inverted on the top cover 2 is in an upright state and is located on the outside of the cover body 1, so that it is convenient for the staff to perform maintenance and repairs on it.

[0032] Furthermore, shutters 12 are provided on both sides of the cover body 1. The design of the double shutters 12 on the cover body 1 can play the role of rain and dust prevention, ventilation and heat dissipation, so that the sensor body 3 has a good working environment to ensure its measurement accuracy and extend its service life.

[0033] like Figure 2-Figure 4 As shown, an inclined bottom plate 4 is installed inside the cover body 1, the signal line 32 passes through the bottom plate 4, and the lower end of the bottom plate 4 is pressed against the inner wall of the cover body 1 corresponding to the position of the pull rope hole 11.

[0034] The bottom plate 4 is in contact with the inner wall of the cover body 1 on all sides. Under the action of gravity, the water inside the cover body 1 will flow downward along the bottom plate 4 until it is discharged through the rope hole 11, avoiding water accumulation inside, thereby reducing the possibility of rust and aging of the signal line 32 and internal components, damage due to moisture, and poor measurement and control accuracy.

[0035] like Figure 3-Figure 6 As shown, the pulley mechanism includes a first pulley assembly 8 and a second pulley assembly 9 , and the first pulley assembly 8 is installed on the bottom plate 4 , and the second pulley assembly 9 is arranged on the outside of the cover body 1 .

[0036] The design of the first pulley assembly 8 and the second pulley assembly 9 inside and outside the cover body 1 can break through the limitation that the pull rope body 31 must stretch and contract horizontally or vertically, so that the pull rope body 31 can be extended and retracted at any angle within 180 degrees above and below the horizontal line.

[0037] As mentioned above, the first pulley assembly 8 includes a first bracket 81 fixedly connected to the bottom plate 4, and a first wheel body 82 is rotatably mounted on one side of the first bracket 81. The second pulley assembly 9 includes a second bracket 91 fixedly mounted on the outside of the cover body 1, and a second wheel body 92 is rotatably mounted on one side of the second bracket 91, and the second wheel body 92 and the first wheel body 82 are in the same plane.

[0038] The pull rope body 31 is in a vertical state, passes around the bottom of the first wheel body 82 from left to right, and is then wound around the second wheel body 92. In order to reduce the distortion of the pull rope body 31 during the extension and retraction process, the second wheel body 92 and the first wheel body 82 need to be in the same plane.

[0039] The function of the first wheel body 82 is to ensure that the pull rope body 31 is in a vertical state when it comes out of the sensor body 3; the second wheel body 92 is used to adjust the final output direction of the pull rope body 31, that is, the pull rope body 31 can bypass the second wheel body 92 from the bottom or from the top, thereby realizing the function of the pull rope body 31 to extend and retract at any angle within a range of 180 degrees above and below the horizontal line.

[0040] In order to prevent the pull rope body 31 from being separated from the pulley mechanism during the extension and retraction process, V-shaped grooves are provided on the circumferential surfaces of the first wheel body 82 and the second wheel body 92, and the pull rope body 31 is extended and retracted in the V-shaped grooves.

[0041] In order to facilitate the installation of the pull rope body 31 on the pulley mechanism, the first bracket 81 and the second bracket 91 both adopt a single bracket structure, that is, the pull rope body 31 can be directly wrapped around the first wheel body 82 and the second wheel body 92 from one side of the bracket; while for the double bracket structure, the pull rope body 31 needs to be passed through the middle of the double bracket, so the single bracket structure is easier to replace the pull rope than the double bracket structure.

[0042] Furthermore, a base 5 is rotatably mounted at the bottom of the cover body 1, and a rotating support 6 is provided between the base 5 and the cover body 1. The rotating support 6 preferably adopts a thrust bearing, so that the cover body 1 can make a circular motion around its own axis relative to the base 5, thereby realizing the function of the pull rope body 31 to extend and retract at any angle within a 360-degree range of the circumference.

[0043] Through the design of the pulley mechanism and the rotating support 6, the equipment can better meet the requirements of multi-angle operation direction of complex working conditions of engineering equipment.

[0044] The base 5 and the center position of the bottom of the cover body 1 are connected by a fastener 7, and the signal line 32 passes through the fastener 7 along the axial direction to the lower side of the base 5.

[0045] The fastener 7 preferably adopts a hollow bolt assembly, which limits the relative displacement between the base 5 and the cover body 1 along the axial direction when it works. The two are connected by the fastener 7, and then the thrust bearing is used to realize circular rotation. The signal line 32 can pass through the center hole of the hollow bolt assembly to the outside, and the inner diameter of the hollow bolt is larger than the outer diameter of the signal line 32, so that it will not be entangled and broken during the 360-degree rotation, and its twisting and knotting can be avoided to damage the internal structure and affect the signal output effect.

[0046] In addition, there is a certain cavity below the bottom plate 4 , and both ends of the cavity are open to facilitate the installation of the fastener 7 on the cover body 1 and the base 5 . Embodiment 2

[0047] On the basis of Example 1, (such as Figure 1 , Figure 7 (as shown in the figure) the top cover 2 is sleeved on the top of the cover body 1, one end of the top cover 2 is rotatably connected to the cover body 1 through a hinge 22, and the circumferential side of the cover body 1 except the side where the hinge 22 is located, the other side surfaces are provided with bayonet holes 13, and the inner side of the top cover 2 is provided with a spring clip 23 corresponding to the position of the bayonet hole 13, and when the top cover 2 is covered with the cover body 1, one end of the spring clip 23 is embedded in the bayonet hole 13; in addition, a handle 21 is fixedly installed on the top of the top cover 2.

[0048] In the existing rainproof devices, the top cover 2 and the cover body 1 are usually fixed with screws, which is extremely inconvenient during the opening and closing of the top cover 2. In the present device, the design of the handle 21, the spring clip 23, the bayonet 13 and the hinge 22 on the top cover 2 greatly facilitates the opening and closing of the top cover 2 and the cover body 1. After the top cover 2 is closed, one end of the spring clip 23 can be embedded in the bayonet 13, so that the top cover 2 can be easily and firmly clamped on the cover body 1, and the top cover 2 can be opened with a little force through the handle 21. Therefore, under the cooperation between the spring clip 23 and the bayonet 13, compared with the existing rainproof devices, the installation and opening and closing of the top cover 2 in this patent are more convenient than the existing screw fixing method.

[0049] During the opening and closing process of the top cover 2, the spring clip 23 is first squeezed by the outer wall of the cover body 1 to cause elastic deformation, and then returns to its original state after entering the clip 13 or leaving the cover body 1; after entering the clip 13, under the action of the spring clip 23, the top cover 2 and the cover body 1 can be snap-fitted and connected.

[0050] By providing the bayonet openings 13 on the three side surfaces of the peripheral side, the stability of the connection between the top cover 2 and the cover body 1 after they are closed can be enhanced, thereby preventing the top cover 2 from being opened by mistake.

[0051] In summary, the sensor body 3 is a pull-rope displacement sensor. Through this device, the pull rope of the displacement sensor can be stretched and contracted at any angle within the range of 180 degrees above and below the horizontal line and 360 degrees in a circle, which can adapt to the complex working conditions of engineering equipment, especially the requirements of multi-angle operation direction of the hydraulic opening and closing machine cylinder of the gate of water conservancy projects (reservoirs, dams, sluices, pumping stations) (for ordinary rainproof devices, the pull rope of the displacement sensor can only be extended and retracted in the horizontal or vertical directions), and the prospect of promotion and application is broad.

[0052] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A pull-rope displacement sensor inverted rainproof device, Features: It comprises a cover body (1) and a top cover (2) that can be flipped open and closed along the longitudinal direction between the cover body (1), the top cover (2) is arranged on the top of the cover body (1), and a drawstring hole (11) is opened at the lower part of the outer side of the cover body (1); The sensor body (3) is installed on the inner side of the top cover (2), one end of the pull rope body (31) passes through the pull rope hole (11) to the outside of the cover body (1), one end of the signal line (32) passes through the bottom of the cover body (1) to the outside thereof, and pulley mechanisms for guiding the pull rope body (31) are arranged on both sides of the pull rope hole (11).

2. The inverted rainproof device of the pull-wire displacement sensor according to claim 1, Features: The top cover (2) is sleeved on the top of the cover body (1), one end of the top cover (2) is rotatably connected to the cover body (1) via a hinge (22), and a handle (21) is fixedly mounted on the top of the top cover (2).

3. The inverted rainproof device of the pull-wire displacement sensor according to claim 2, Features: A bayonet (13) is provided on the circumferential side of the cover body (1), a spring clip (23) corresponding to the position of the bayonet (13) is provided on the inner side of the top cover (2), and when the top cover (2) and the cover body (1) are covered, one end of the spring clip (23) is embedded in the bayonet (13).

4. The inverted rainproof device of the pull-wire displacement sensor according to claim 3, Features: An inclined bottom plate (4) is installed inside the cover body (1), the signal line (32) passes through the bottom plate (4), and a lower end of the bottom plate (4) is abutted against the inner wall of the cover body (1) corresponding to the position of the pull rope hole (11).

5. The inverted rainproof device of the pull-wire displacement sensor according to claim 4, Features: The pulley mechanism comprises a first pulley assembly (8) and a second pulley assembly (9), wherein the first pulley assembly (8) is mounted on the base plate (4), and the second pulley assembly (9) is arranged on the outside of the cover body (1).

6. The inverted rainproof device of the pull-wire displacement sensor according to claim 5, Features: The first pulley assembly (8) comprises a first bracket (81) fixedly connected to the base plate (4), and a first wheel body (82) is rotatably mounted on one side of the first bracket (81).

7. The inverted rainproof device of the pull-wire displacement sensor according to claim 6, Features: The second pulley assembly (9) comprises a second bracket (91) fixedly mounted on the outside of the cover body (1); a second wheel body (92) is rotatably mounted on one side of the second bracket (91); and the second wheel body (92) and the first wheel body (82) are located in the same plane.

8. The inverted rainproof device of the pull-wire displacement sensor according to claim 7, Features: A base (5) is rotatably mounted on the bottom of the cover body (1), and a rotatable support member (6) is provided between the base (5) and the cover body (1).

9. The inverted rainproof device of the pull-wire displacement sensor according to claim 8, Features: The base (5) and the cover body (1) are connected at the center of the bottom through a fastener (7), and the signal line (32) passes through the fastener (7) in the axial direction to the lower side of the base (5).

10. The inverted rainproof device for the pull-wire displacement sensor according to any one of claims 1 to 9, Features: Shutters (12) are provided on both sides of the cover body (1).

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