Protective assembly

Abstract

The utility model provides a protection assembly, which is suitable for protecting a detection piece, and comprises a bottom plate used for bearing the detection piece; the cover body is connected with the bottom plate and covers the detection piece, a first circulation hole is formed in the cover body, and the air draft piece is rotatably arranged in the first circulation hole so that external air can enter the cover body through the first circulation hole; the moisture-proof part is provided with a filling cavity used for being filled with a desiccant, and the moisture-proof part is arranged between the air draft part and the detection part, so that air flowing in from the first circulation hole flows through the desiccant in the moisture-proof part and then is blown to the detection part. According to the utility model, the problem of poor detection accuracy of a sensor in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensor protection, in particular to a protection component. Background Art

[0002] The goaf gas sensor is a mining intrinsically safe equipment that can automatically extract multiple gas concentrations of ambient gases in the goaf of the coal mine working face or the closed goaf. The sensor can analyze the concentrations of methane, carbon monoxide, oxygen, carbon dioxide, ethylene, and acetylene gases in the underground environment. It has local display and over-limit alarm functions, and can upload the detection data to the coal mine safety monitoring system for supporting use.

[0003] The protective components of most sensors protect the sensors by fully wrapping them. However, due to the relatively humid environment and poor ventilation underground, the heat generated inside the sensor is difficult to dissipate. The water vapor inside the protective component enters the sensor, which can easily cause damage to the electronic components inside the sensor, thereby affecting the detection accuracy of the sensor. Utility Model Content

[0004] The main purpose of the utility model is to provide a protection component to solve the problem of poor detection accuracy of sensors in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a protection component, which is suitable for protecting the detection part, and the protection component includes: a base plate, which is used to carry the detection part; a cover body and an exhaust member, the cover body is connected to the base plate and is arranged above the detection part, and a first flow hole is arranged on the cover body, and the exhaust member can be rotatably arranged in the first flow hole to allow external air to enter the cover body through the first flow hole; a moisture-proof member, which has a filling cavity for filling a dehumidifier, and the moisture-proof member is arranged between the exhaust member and the detection part, so that the air flowing in from the first flow hole flows through the dehumidifier in the moisture-proof member and then blows toward the detection part.

[0006] Furthermore, the protective component also includes a filter plate, which is arranged between the exhaust component and the detection component, and the moisture-proof component is arranged below the filter plate. The filter plate is provided with filter holes, and the filter holes are connected with the first circulation hole so that air flows through the first circulation hole and the filter hole in sequence and flows into the moisture-proof component.

[0007] Furthermore, the filter holes are communicated with the filling chamber so that the air flowing in from the filter holes contacts with the dehumidifier for dehumidification.

[0008] Furthermore, the protection component also includes a fastener, a first fastening hole is provided on the cover body, a second fastening hole is provided on the filter plate, and the fastener is sequentially inserted into the first fastening hole and the second fastening hole to fasten the filter plate and the cover body.

[0009] Furthermore, the protection component also includes a base and a first vibration-absorbing component. The base is used to be set on the supporting base surface. The first vibration-absorbing component includes a first telescopic rod and a first elastic member. The two ends of the first telescopic rod are respectively connected to the base and the bottom plate. The first elastic member is sleeved on the first telescopic rod. The two ends of the first elastic member are respectively abutted against the base and the bottom plate.

[0010] Furthermore, there are a plurality of first vibration damping components, and the plurality of first vibration damping components are arranged on the base at intervals along the extension direction of the base.

[0011] Furthermore, the protection assembly also includes a second vibration-absorbing component, which includes a second telescopic rod and a second elastic member, the two ends of the second telescopic rod are respectively connected to the bottom plate and the filter plate, the second elastic member is sleeved on the second telescopic rod, and the two ends of the second elastic member are respectively abutted against the bottom plate and the filter plate.

[0012] Furthermore, the protection component also includes a clamping component, which includes two clamping members, and the two clamping members are movably arranged along a preset direction so that the two clamping members can move toward each other until they abut against the end surface of the detection member to clamp the detection member.

[0013] Furthermore, the clamping component also includes two transmission screws and two transmission blocks. The two transmission screws are arranged in a one-to-one correspondence with the two transmission blocks, and the two transmission blocks are arranged in a one-to-one correspondence with the two clamping members. Each transmission block is provided with a corresponding clamping member. Each transmission block is threadedly connected to the corresponding transmission screw, and each transmission screw is rotatably arranged around the axis of each transmission screw so that the corresponding transmission block moves along a preset direction.

[0014] Furthermore, a penetration groove is provided on the bottom plate, the penetration groove extends along a preset direction, a penetration hole is provided on the cover body, a transmission screw is rotatably penetrated in the penetration groove, one end of the transmission screw is connected to the groove wall of the penetration groove, and the other end of the transmission screw is penetrated through the penetration hole.

[0015] According to the technical solution of the utility model, the protective assembly includes a bottom plate, a cover body, an air extraction member and a moisture-proof member. The cover body is provided with a first flow hole, the air extraction member is rotatably arranged in the first flow hole, and the moisture-proof member is arranged between the air extraction member and the detection member. The cover body is arranged above the detection member to protect the detection member, the air extraction member rotates to extract the external air into the cover body through the first flow hole, the moisture-proof member removes the moisture in the air in the cover body, and then blows the dehumidified air to the detection member, which helps to dissipate the heat inside the detection member, avoids the detection member from being overheated and water vapor from entering the sensor, thereby solving the problem of poor detection accuracy of the sensor in the prior art and improving the detection accuracy of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A cross-sectional schematic diagram showing the internal structure of an embodiment of a protection assembly according to the utility model;

[0018] Figure 2 A schematic structural diagram of an embodiment of a protection assembly according to the utility model is shown;

[0019] Figure 3 A schematic top view of the structure of the bottom plate, the second vibration damping component and the clamping component of the protection assembly according to the utility model is shown;

[0020] Figure 4 A schematic top view of the structure of the protection assembly (minus the bottom plate and the base) according to the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 2. Fastening nut; 10. Bottom plate; 20. Cover body; 30. Exhaust member; 21. First circulation hole; 40. Moisture-proof member; 50. Filter plate; 60. Fastener; 70. Base; 80. First vibration-absorbing member; 81. First telescopic rod; 82. First elastic member; 90. Second vibration-absorbing member; 91. Second telescopic rod; 92. Second elastic member; 100. Clamping member; 101. Clamping member; 102. Drive screw; 103. Drive block; 104. Wearing groove; 411. Second circulation hole; 811. First rod segment; 812. Second rod segment; 911. Third rod segment; 912. Fourth rod segment; 105. Handle. DETAILED DESCRIPTION

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] refer to Figures 1 to 4 The utility model provides a protection component suitable for protecting a detection piece, comprising: a bottom plate 10, the bottom plate 10 is used to carry the detection piece; a cover body 20 and an exhaust member 30, the cover body 20 is connected to the bottom plate 10 and is arranged above the detection piece, a first flow hole 21 is arranged on the cover body 20, the exhaust member 30 is rotatably arranged in the first flow hole 21, so that external air enters the cover body 20 through the first flow hole 21; a moisture-proof member 40, the moisture-proof member 40 has a filling cavity for filling a dehumidifier, and the moisture-proof member 40 is arranged between the exhaust member 30 and the detection piece, so that the air flowing in from the first flow hole 21 flows through the dehumidifier in the moisture-proof member 40 and then blows toward the detection piece.

[0027] The protective assembly of the utility model includes a bottom plate 10, a cover body 20, an air suction piece 30 and a moisture-proof piece 40. The cover body 20 is provided with a first circulation hole 21. The air suction piece 30 is rotatably arranged in the first circulation hole 21. The moisture-proof piece 40 is arranged between the air suction piece 30 and the detection piece. The cover body 20 is arranged above the detection piece to protect the detection piece. The air suction piece 30 rotates to draw the external air into the cover body 20 through the first circulation hole 21. The moisture-proof piece 40 removes the moisture in the air in the cover body 20, and then blows the dehumidified air to the detection piece, which helps to dissipate the heat inside the detection piece, avoids the detection piece from being overheated and water vapor from entering the sensor, thereby solving the problem of poor detection accuracy of the sensor in the prior art and improving the detection accuracy of the sensor.

[0028] Specifically, the detection element is a sensor. Figure 4 As shown, the air exhaust member 30 is a fan, which includes a cover net and a plurality of fan blades. The plurality of fan blades are arranged in the cover net, and the external air enters the cover body 20 through the first flow hole 21, the gap between the cover net and the fan blades in sequence.

[0029] Specifically, the cover body 20 and the bottom plate 10 are fixed by a plurality of bolts, and the plurality of bolts are arranged at intervals along the circumferential direction of the bottom plate 10 so that the cover body 20 and the bottom plate 10 are tightly connected.

[0030] In this embodiment, if Figure 2 As shown, the protective component also includes a filter plate 50, which is arranged between the exhaust member 30 and the detection member, and the moisture-proof member 40 is arranged below the filter plate 50. The filter plate 50 is provided with filter holes, and the filter holes are connected with the first circulation hole 21, so that air flows through the first circulation hole 21 and the filter hole in sequence and flows into the moisture-proof member 40.

[0031] Specifically, the filter plate 50 is used to filter large impurities in the air to prevent the large impurities from entering the moisture-proof component 40 and further prevent the large impurities from flowing into the detection component.

[0032] Specifically, the cover body 20 extends in the vertical direction, and the flow cross-sections of the cover body 20, the filter plate 50 and the moisture-proof component 40 are all circular. The flow cross-sectional area of ​​the filter plate 50 is 4 / 5 of the flow cross-sectional area of ​​the cover body 20, and the flow cross-sectional area of ​​the moisture-proof component 40 is 3 / 5 of the flow cross-sectional area of ​​the cover body 20. The central axes of the cover body 20, the filter plate 50 and the moisture-proof component 40 are arranged to coincide with each other.

[0033] In this embodiment, if Figure 2 As shown, the filter holes are communicated with the filling chamber so that the air flowing in from the filter holes contacts with the dehumidifier for dehumidification.

[0034] Specifically, a plurality of second flow holes 411 are provided on the cavity wall of the filling cavity, and the plurality of second flow holes 411 are connected to the cavity inside the cover body 20 , so that the dehumidified air flows out from the second flow holes 411 and then blows toward the detection component under the moisture-proof component 40 .

[0035] In this embodiment, if Figure 2 As shown, the protection component also includes a fastener 60, a first fastening hole is provided on the cover body 20, and a second fastening hole is provided on the filter plate 50. The fastener 60 is sequentially inserted into the first fastening hole and the second fastening hole to fasten the filter plate 50 and the cover body 20.

[0036] Specifically, the fastener 60 is a bolt, and the protective assembly also includes a fastening nut group, which includes two fastening nuts 2. The two fastening nuts 2 are respectively arranged on both sides of the cover body 20, and are threadedly connected to the fastener 60 through the two fastening nuts 2, so that the fastener 60 is fastened to the cover body 20, further ensuring that the filter plate 50 and the cover body 20 are fastened to each other, thereby preventing the filter plate 50 from shaking.

[0037] In this embodiment, if Figure 1 As shown, the protection component also includes a base 70 and a first vibration-absorbing component 80. The base 70 is used to be set on a supporting base surface. The first vibration-absorbing component 80 includes a first telescopic rod 81 and a first elastic member 82. The two ends of the first telescopic rod 81 are respectively connected to the base 70 and the bottom plate 10. The first elastic member 82 is sleeved on the first telescopic rod 81. The two ends of the first elastic member 82 are respectively abutted against the base 70 and the bottom plate 10.

[0038] Specifically, the first telescopic rod 81 includes a first rod segment 811 and a second rod segment 812, one end of the first rod segment 811 is connected to the bottom plate 10, the other end of the first rod segment 811 is inserted into one end of the second rod segment 812, and the other end of the second rod segment 812 is connected to the base 70. Under the action of external force, the first rod segment 811 and the second rod segment 812 can move relative to each other; when the first telescopic rod 81 is not subjected to external force, the first rod segment 811 and the second rod segment 812 remain relatively stationary.

[0039] During specific implementation, since the supporting base is prone to vibration, the protective component is prone to shake in the vertical direction. When the protective component shakes upward, the base 70 shakes upward, and the base 70 squeezes the second rod segment 812 and the first elastic member 82. The second rod segment 812 moves in the vertical direction toward the first rod segment 811, and the first elastic member 82 is squeezed. The first elastic member 82 will give the base 70 a vertical downward elastic force, thereby offsetting the vertical upward supporting force applied to the base 70 by the supporting base, thereby preventing the bottom plate 10 and the detection component from being damaged by vibration.

[0040] In this embodiment, if Figure 1As shown, there are multiple first vibration damping components 80, and the multiple first vibration damping components 80 are arranged on the base 70 at intervals along the extension direction of the base 70. Such an arrangement helps to enhance the vibration reduction effect of the first vibration damping components 80 on the bottom plate 10 and the detection member, and further prevent the bottom plate 10 and the detection member from being damaged by vibration.

[0041] In this embodiment, if Figure 2 As shown, the protection component also includes a second vibration-absorbing component 90, which includes a second telescopic rod 91 and a second elastic member 92. The two ends of the second telescopic rod 91 are respectively connected to the bottom plate 10 and the filter plate 50. The second elastic member 92 is sleeved on the second telescopic rod 91, and the two ends of the second elastic member 92 are respectively abutted against the bottom plate 10 and the filter plate 50.

[0042] Specifically, the second telescopic rod 91 includes a third rod segment 911 and a fourth rod segment 912, one end of the third rod segment 911 is connected to the filter plate 50, the other end of the third rod segment 911 is inserted into one end of the fourth rod segment 912, and the other end of the fourth rod segment 912 is connected to the bottom plate 10. Under the action of external force, the third rod segment 911 and the fourth rod segment 912 can move relative to each other; when the second telescopic rod 91 is not subjected to external force, the third rod segment 911 and the fourth rod segment 912 remain relatively stationary.

[0043] During specific implementation, since the supporting base is prone to vibration, the protective component is prone to shake in the vertical direction. When the protective component shakes downward, the filter plate 50 shakes downward, and the filter plate 50 squeezes the third rod segment 911 and the second elastic member 92. The third rod segment 911 moves in the vertical direction toward the direction close to the fourth rod segment 912, and the second elastic member 92 is squeezed. The second elastic member 92 will give the filter plate 50 a vertical upward elastic force, thereby offsetting the gravity on the filter plate 50, thereby preventing the bottom plate 10 and the detection component from being damaged by vibration.

[0044] Specifically, there are four second vibration damping components 90 , and the four second vibration damping components 90 are arranged at intervals along the circumferential direction of the bottom plate 10 .

[0045] Specifically, the central axis of the fastener 60 is arranged to coincide with the central axis of the second telescopic rod 91. The first elastic member 82 and the second elastic member 92 are both springs. The first telescopic rod 81 and the second telescopic rod 91 both extend in the vertical direction.

[0046] In this embodiment, if Figure 3 As shown, the protection assembly also includes a clamping component 100, which includes two clamping members 101. The two clamping members 101 are movably arranged along a preset direction so that the two clamping members 101 move toward each other until they abut against the end surface of the detection member to clamp the detection member.

[0047] Specifically, the two clamping members 101 are used to limit the detection member to prevent the detection member from moving along a preset direction, thereby ensuring that the detection member and the base plate 10 remain relatively still.

[0048] Specifically, the clamping member 101 is a clamping plate, and the surface of the clamping plate is wrapped with a protective sponge to prevent the detection member from being damaged. Figure 3 The vertical direction shown in .

[0049] In this embodiment, if Figure 3 As shown, the clamping component 100 also includes two transmission screws 102 and two transmission blocks 103. The two transmission screws 102 are arranged in a one-to-one correspondence with the two transmission blocks 103. The two transmission blocks 103 are arranged in a one-to-one correspondence with the two clamping members 101. Each transmission block 103 is provided with a corresponding clamping member 101. Each transmission block 103 is threadedly connected with the corresponding transmission screw 102. Each transmission screw 102 is rotatably arranged around the axis of each transmission screw 102 so that the corresponding transmission block 103 moves along a preset direction.

[0050] Specifically, by rotating the transmission screw 102 , the transmission block 103 drives the clamping member 101 to move along a preset direction, so that the two clamping members 101 move toward or away from each other, thereby achieving the clamping and loosening of the detection member.

[0051] In this embodiment, if Figure 3 As shown, a penetration groove 104 is provided on the base plate 10, and the penetration groove 104 extends along a preset direction. A penetration hole is provided on the cover body 20, and a transmission screw 102 is rotatably penetrated in the penetration groove 104, one end of the transmission screw 102 is connected to the groove wall of the penetration groove 104, and the other end of the transmission screw 102 is penetrated through the penetration hole.

[0052] Specifically, Figure 3 As shown, the clamping component 100 also includes a handle 105, which is arranged at the other end of the transmission screw 102 and the outside of the cover body 20, so as to control the rotation of the transmission screw 102 through the handle 105, thereby controlling the movement of the clamping member 101.

[0053] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0054] The protective assembly of the utility model includes a bottom plate 10, a cover body 20, an air suction piece 30 and a moisture-proof piece 40. The cover body 20 is provided with a first circulation hole 21. The air suction piece 30 is rotatably arranged in the first circulation hole 21. The moisture-proof piece 40 is arranged between the air suction piece 30 and the detection piece. The cover body 20 is arranged above the detection piece to protect the detection piece. The air suction piece 30 rotates to draw the external air into the cover body 20 through the first circulation hole 21. The moisture-proof piece 40 removes the moisture in the air in the cover body 20, and then blows the dehumidified air to the detection piece, which helps to dissipate the heat inside the detection piece, avoids the detection piece from being overheated and water vapor from entering the sensor, thereby solving the problem of poor detection accuracy of the sensor in the prior art and improving the detection accuracy of the sensor.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protection component, suitable for protecting a detection part, characterized in that: The protection component comprises: A bottom plate (10), the bottom plate (10) being used to carry the detection element; A cover body (20) and an air suction member (30), wherein the cover body (20) is connected to the bottom plate (10) and is disposed above the detection member, a first circulation hole (21) is disposed on the cover body (20), and the air suction member (30) is rotatably disposed in the first circulation hole (21) so that external air enters the cover body (20) through the first circulation hole (21); A moisture-proof member (40), wherein the moisture-proof member (40) has a filling cavity for filling a dehumidifier, and the moisture-proof member (40) is arranged between the air exhaust member (30) and the detection member so that the air flowing in from the first circulation hole (21) flows through the dehumidifier in the moisture-proof member (40) and then blows toward the detection member.

2. The protection assembly according to claim 1, characterized in that: The protection component further comprises a filter plate (50), wherein the filter plate (50) is arranged between the air exhaust member (30) and the detection member, and the moisture-proof member (40) is arranged below the filter plate (50). The filter plate (50) is provided with a filter hole, and the filter hole is connected to the first circulation hole (21), so that the air flows through the first circulation hole (21) and the filter hole in sequence and flows into the moisture-proof member (40).

3. The protection assembly according to claim 2, characterized in that: The filter hole is communicated with the filling chamber so that the air flowing in from the filter hole contacts with the dehumidifier to be dehumidified.

4. The protection assembly according to claim 2, characterized in that: The protection component further comprises a fastener (60), the cover body (20) is provided with a first fastening hole, the filter plate (50) is provided with a second fastening hole, and the fastener (60) is sequentially inserted into the first fastening hole and the second fastening hole to fasten the filter plate (50) and the cover body (20).

5. The protection assembly according to claim 1, characterized in that: The protection component also includes a base (70) and a first vibration-absorbing component (80). The base (70) is used to be arranged on a supporting base surface. The first vibration-absorbing component (80) includes a first telescopic rod (81) and a first elastic member (82). The two ends of the first telescopic rod (81) are respectively connected to the base (70) and the bottom plate (10). The first elastic member (82) is sleeved on the first telescopic rod (81). The two ends of the first elastic member (82) are respectively abutted against the base (70) and the bottom plate (10).

6. The protection assembly according to claim 5, characterized in that: There are a plurality of the first vibration damping components (80), and the plurality of the first vibration damping components (80) are arranged on the base (70) at intervals along the extension direction of the base (70).

7. The protection assembly according to claim 2, characterized in that: The protection component also includes a second vibration-absorbing component (90), the second vibration-absorbing component (90) includes a second telescopic rod (91) and a second elastic member (92), the two ends of the second telescopic rod (91) are respectively connected to the bottom plate (10) and the filter plate (50), the second elastic member (92) is sleeved on the second telescopic rod (91), and the two ends of the second elastic member (92) are respectively abutted against the bottom plate (10) and the filter plate (50).

8. The protection assembly according to claim 1, characterized in that: The protection component further comprises a clamping component (100), wherein the clamping component (100) comprises two clamping members (101), and the two clamping members (101) are movably arranged along a preset direction so that the two clamping members (101) move towards each other until they abut against the end surface of the detection member, so as to clamp the detection member.

9. The protection assembly according to claim 8, characterized in that: The clamping component (100) further comprises two transmission screws (102) and two transmission blocks (103); the two transmission screws (102) and the two transmission blocks (103) are arranged in a one-to-one correspondence; the two transmission blocks (103) and the two clamping members (101) are arranged in a one-to-one correspondence; each transmission block (103) is provided with a corresponding clamping member (101); each transmission block (103) is threadedly connected to the corresponding transmission screw (102); each transmission screw (102) is rotatably arranged around an axis of the transmission screw (102) so that the corresponding transmission block (103) moves along the preset direction.

10. The protection assembly according to claim 9, characterized in that: The bottom plate (10) is provided with a penetration groove (104), the penetration groove (104) extending along the preset direction, the cover body (20) is provided with a penetration hole, the transmission screw (102) is rotatably penetrated in the penetration groove (104), one end of the transmission screw (102) is connected to the groove wall of the penetration groove (104), and the other end of the transmission screw (102) is penetrated through the penetration hole.

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