Sand-dust prevention structure
Through the multi-layer sand prevention structure design, sand and dust of different particle sizes are blocked, the problem of video surveillance equipment being stuck in the sand and dust environment is solved, and the equipment's sand prevention effect and service life are improved.
Patent Information
- Application Number
- CN202422462018.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-12
AI Technical Summary
Existing video surveillance equipment is easily stuck by sand and stone in a dusty environment, resulting in transmission failure. Existing solutions such as increasing motor torque, clearance transmission or using oil seal to prevent sand are defective.
A multi-layer sand-proof structure is adopted, including a sand-proof cavity, a sand-proof net, a sealing ring and a sand-dust depositing trough. Large particles of sand and stone are blocked through the sand-proof cavity, and small particles are blocked by the sand-proof net, and the sealing ring and dust channel are reduced to enter. The oil seal and the oil sealing pressure plate are used to block fine sand.
It realizes effective barriers for sand and dust of different particle sizes, prevents sand and stone from stagnating the shaft, reduces wear of oil seals, and extends the service life of the equipment.
Smart Images
Figure CN223288694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of dust prevention of video monitoring equipment, and more particularly to a sand and dust prevention structure. Background Art
[0002] Video surveillance equipment is an important part of the security system. It is a comprehensive system with strong prevention capabilities. Video surveillance is widely used in many occasions because of its intuitiveness, accuracy, timeliness and rich information content.
[0003] The current equipment is used in a dusty environment, and the transmission part is stuck by sand and stones. The current video surveillance equipment mainly has the following solutions:
[0004] 1. Increase the motor torque to force the stuck stone out, but the drawback is that when the motor is enlarged, the entire product becomes larger;
[0005] 2. The gap transmission is mainly based on the gap, but the disadvantage is that the size of sand and gravel varies and cannot be completely avoided;
[0006] 3. Use oil seals to prevent sand, but the disadvantage is that after sand and dust are introduced into the interface between the oil seal and the shaft, the wear of the oil seal lip is accelerated, and after a long time, the oil seal is worn and the waterproofing is damaged;
[0007] In summary, the inventor provides a sand and dust prevention structure based on the above-mentioned problems. Utility Model Content
[0008] In order to solve the problems raised in the above background technology, the utility model provides a sand and dust proof structure.
[0009] The utility model provides a dust-proof structure adopting the following technical solutions:
[0010] A sand and dust prevention structure comprises an outer shell, the outer side of the outer shell is connected to a rotating shaft bracket, a rotating shaft sand prevention shell is installed at the bottom of the rotating shaft bracket, a first sand prevention structure is arranged between the rotating shaft sand prevention shell and the rotating shaft bracket, the first sand prevention structure is used to prevent sand and stones from entering the gap, a rotating shaft is installed inside the rotating shaft bracket, an oil seal is installed between the rotating shaft bracket and the rotating shaft, an oil seal pressure plate for pressing the oil seal is installed on one side of the oil seal, a sand and dust channel is provided between the rotating shaft and the oil seal pressure plate, one port of the sand and dust channel is connected to a sand and dust deposition groove, and the sand and dust deposition groove is located between the rotating shaft and the rotating shaft sand prevention shell.
[0011] Preferably, the first sand-proof structure includes a sand-proof cavity, a sand-proof net fixing pressure plate, and a sand-proof net. The sand-proof cavity is arranged between the rotating shaft bracket and the rotating shaft sand-proof shell. The sand-proof net is installed at the port of the rotating shaft gap communicating with the sand-proof cavity. The sand-proof net fixing pressure plate is installed in the sand-proof cavity to fix the sand-proof net.
[0012] Preferably, the sand-proof net is made of a metal material, and is flexible and has pores inside to block large particles of sand and gravel.
[0013] Preferably, a shaft gap is provided between the shaft sand-proof housing and the shaft bracket, and a sealing ring for sealing the shaft gap is provided on a side of the shaft gap away from the sand-proof net.
[0014] Preferably, the size of the sand-proof cavity is designed to be larger than the size of most sand and stones, so that sand and stones will not be stuck in the gap.
[0015] Preferably, the shaft gap is communicated with the sand and dust sedimentation trough.
[0016] In summary, the present invention has the following beneficial technical effects:
[0017] The utility model uses a multi-layer dust-proof structure to sequentially block large and small dust particles outside each dust-proof structure, thereby achieving protection against sand and stone effects. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the front internal structure of an embodiment of the present utility model;
[0019] Figure 2 In the embodiment of the present utility model Figure 1 Schematic diagram of the enlarged structure at A in the middle;
[0020] Figure 3 In the embodiment of the present utility model Figure 1 Schematic diagram of the enlarged structure at B in the middle;
[0021] Figure 4 In the embodiment of the present utility model Figure 1 Schematic diagram of the enlarged structure at C in the middle;
[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the sand-proof net in the embodiment of the present utility model.
[0023] Explanation of the accompanying reference numerals: 1. outer shell; 2. rotating shaft bracket; 3. screw; 4. rotating shaft sand-proof shell; 5. rotating shaft gap; 6. sealing ring; 7. sand-proof cavity; 8. sand-proof net fixing pressure plate; 9. sand-proof net; 10. oil seal; 11. oil seal pressure plate; 12. sand and dust channel; 13. sand and dust sedimentation trough; 14. rotating shaft. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1-5 The utility model is described in further detail.
[0025] It should be noted that the drawings are schematic and not drawn to scale. For clarity and convenience, the relative sizes and proportions of parts shown in the drawings may be exaggerated or reduced in size. Any dimensions are illustrative only and are not intended to be limiting. Identical structures, elements, or components appearing in two or more drawings are denoted by the same reference numerals to indicate similar features.
[0026] The present invention discloses a dust-proof structure. Figure 1-5 A sand and dust proof structure includes a shell 1, a shaft bracket 2 is connected to the outside of the shell 1, and 1 and 2 are fixed together by a screw 3, and a shaft sand proof shell 4 is installed at the bottom of the shaft bracket 2.
[0027] Reference Figure 1-5 , a first sand-proof structure is provided between the rotating shaft sand-proof shell 4 and the rotating shaft bracket 2. The first sand-proof structure is used to prevent sand and stones from entering the gap. The first sand-proof structure includes a sand-proof cavity 7, a sand-proof net fixing pressure plate 8, and a sand-proof net 9. The sand-proof cavity 7 is formed between the rotating shaft bracket 2 and the rotating shaft sand-proof shell 4. The size of the sand-proof cavity 7 is designed to be larger than the size of the largest sand and stone, so that sand and stones will not be stuck in the gap. The sand-proof net 9 is provided at the sand inlet of the rotating shaft gap 5, and the sand-proof net fixing pressure plate 8 is installed in the sand-proof cavity 7 to fix the sand-proof net 9. The sand-proof net 9 adopts a structure woven by metal material, and the sand-proof net 9 is flexible and has pores inside. The size of the pores is smaller than the size of sand and stone, so as to block large particles of sand and stone, and prevent small sand particles from being stuck on the sand-proof net 9, so as not to jam the rotating shaft 14;
[0028] Specifically, a sand-proof cavity 7 is formed between the rotating shaft sand-proof housing 4 and the rotating shaft bracket 2. The size of 7 is designed to be larger than the size of most sand and stones. A sand-proof net 9 is installed at the sand inlet of the rotating shaft gap 5. At the same time, the size of the pores inside the sand-proof net 9 is smaller than the size of the sand and stones to block large particles of sand and stones. The sand-proof net 9 is then fixed by the sand-proof net fixing plate 8 to assemble the first sand-proof structure.
[0029] Reference Figure 3A shaft gap 5 is provided between the shaft sand-proof housing 4 and the shaft bracket 2 on the side wall of the sand-proof cavity 7. The size of the shaft gap 5 is larger than the size of the pores of the sand-proof net 9 to ensure that sand and stones passing through the dust-proof net will not get stuck on the shaft 14. A sealing ring 6 for sealing the shaft gap 5 is provided on the side of the shaft gap 5 away from the sand-proof net 9 to intercept sand passing through the sand-proof net 9. The compression amount of the sealing ring 6 is reduced to reduce the resistance of the sealing ring 6 to the shaft 14.
[0030] Specifically, a sealing ring 6 is installed on the shaft gap 5 to serve as a second dustproof structure to prevent sand from entering and intercept the sand that passes through the sand-proof net 9;
[0031] Reference Figure 4 , when some fine sand is brought into the interior of the large equipment by the rotation of the sealing ring 6, a rotating shaft 14 is installed inside the rotating shaft bracket 2, an oil seal 10 is installed between the rotating shaft bracket 2 and the rotating shaft 14, and an oil seal pressure plate 11 for pressing the oil seal 10 is installed on one side of the oil seal 10, a sand and dust channel 12 is provided between the rotating shaft 14 and the oil seal pressure plate 11, and a sand and dust deposition groove 13 is designed between the rotating shaft sand-proof shell 4 and the oil seal pressure plate 11 to reduce the probability of sand entering the oil seal, and the sand and dust deposition groove 13 is located between the rotating shaft 14 and the rotating shaft sand-proof shell 4, and the rotating shaft gap 5 is connected to the sand and dust deposition groove 13;
[0032] Specifically, a dust deposition groove 13 is designed between the rotating shaft sand-proof housing 4 and the oil seal pressure plate 11 to reduce the probability of sand entering the oil seal. A dust deposition groove 13 is designed between the oil seal pressure plate 11 and the rotating shaft 14 to prevent some fine sand from entering the equipment due to the rotation of the sealing ring 6. The other end of the dust channel 12 is provided with an oil seal 10 located between the rotating shaft bracket 2 and the rotating shaft 14. The oil seal 10 blocks the remaining very small amount of fine yarn, thereby preventing dust from entering the rotating shaft 14.
[0033] Through the above structural design, a multi-layer anti-sand and dust structure is realized, which blocks large and small particles of sand and dust outside each dust-proof structure in turn, achieving a good sand-proof effect.
[0034] Finally, a few points should be explained: First, in the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0035] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.
[0036] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A dust-proof structure, comprising a housing (1), characterized in that: The outer side of the housing (1) is connected to a rotating shaft bracket (2), a rotating shaft sand-proof shell (4) is installed at the bottom of the rotating shaft bracket (2), a first sand-proof structure is provided between the rotating shaft sand-proof shell (4) and the rotating shaft bracket (2), and the first sand-proof structure is used to prevent sand and stones from entering the gap, a rotating shaft (14) is installed inside the rotating shaft bracket (2), an oil seal (10) is installed between the rotating shaft bracket (2) and the rotating shaft (14), an oil seal pressure plate (11) for pressing the oil seal (10) is installed on one side of the oil seal (10), a sand and dust channel (12) is provided between the rotating shaft (14) and the oil seal pressure plate (11), one port of the sand and dust channel (12) is connected to a sand and dust deposition groove (13), and the sand and dust deposition groove (13) is located between the rotating shaft (14) and the rotating shaft sand-proof shell (4).
2. The dust-proof structure according to claim 1, characterized in that: The first sand-proof structure comprises a sand-proof cavity (7), a sand-proof net fixing pressure plate (8), and a sand-proof net (9); the sand-proof cavity (7) is arranged between the rotating shaft bracket (2) and the rotating shaft sand-proof housing (4); the sand-proof net (9) is installed at the end of the rotating shaft gap (5) communicating with the sand-proof cavity (7); and the sand-proof net fixing pressure plate (8) is installed in the sand-proof cavity (7) to fix the sand-proof net (9).
3. The dust-proof structure according to claim 2, characterized in that: The sand-proof net (9) is a structure made of metal material, and is flexible and has pores inside, so as to block large particles of sand and stone.
4. The dust-proof structure according to claim 1, characterized in that: A rotating shaft gap (5) is provided between the rotating shaft sand-proof housing (4) and the rotating shaft bracket (2), and a sealing ring (6) for sealing the rotating shaft gap (5) is provided on a side of the rotating shaft gap (5) away from the sand-proof net (9).
5. The dust-proof structure according to claim 1, characterized in that: The size of the sand-proof cavity (7) is designed to be larger than the size of most sand and stones, so that sand and stones will not be stuck in the gap.
6. The dust-proof structure according to claim 2, characterized in that: The shaft gap (5) is in communication with the sand and dust deposition trough (13).