A waterproof structure for shaft hole of gate chassis

Abstract

The present invention discloses a waterproof structure for an axis hole of a barrier gate chassis, comprising a chassis, a railing mounting spindle is passed through the chassis, a rear cover and a front cover are sleeved on the railing mounting spindle, and the rear cover and the front cover are respectively located on both sides of the chassis, the rear cover, the front cover and the chassis are cooperatively connected by stainless steel countersunk screws, a second O-ring is arranged on the front cover and the second O-ring can contact the chassis, a spindle sealing ring is interference-fitted on the railing mounting spindle, the spindle sealing ring can contact the front cover, a V-groove is opened on the spindle sealing ring in the circumferential direction, and the V-groove is located below the guide structure of the front cover, the structure is simple, and can effectively improve the waterproofness of the barrier gate chassis.

Description

Technical Field

[0001] The present invention relates to the technical field of security equipment, and in particular to a waterproof structure for an axle outlet hole of a gate chassis. Background Art

[0002] Electric barrier gates are currently used in parking lots such as highways, shopping malls, schools, and communities, and are important components of the toll collection system. Since the barrier enclosure is used outdoors for a long time, when water enters the interior of the electric barrier gate, it will damage its internal electrical components, and rust on the transmission parts will also affect the service life of the barrier. Therefore, the components of the barrier need to be waterproof and anti-fouling during production. However, the traditional enclosure has the following problems:

[0003] 1. In the traditional chassis design, the chassis and the chassis cover are waterproofed by installing waterproof rubber parts. During assembly, the waterproof rubber parts will be squeezed on the main shaft, making it impossible to ensure the tightness of the parts when they are assembled;

[0004] 2. The chassis body and cover are both sheet metal bending parts, which are bound to deform during use. It is impossible to ensure that all products fit tightly after assembly. In addition, such assembly requires high wear resistance of rubber seals. Long-term use will affect the waterproof performance of the waterproof chassis.

[0005] 3. When the gap between the components after the product is assembled is too small, the running resistance of the railing arm will be too large, resulting in poor running stability of the gate railing, affecting the consistency of product production, and there will be more maintenance in the later market, which will affect the brand image after a long time.

[0006] Therefore, the waterproof structure of the shaft hole of the traditional barrier chassis has no advantages in the current market. There will be conflicts between the designer's design concept and the manufacturer's later maintenance. It is necessary to optimize this structure based on the above problems. Summary of the invention

[0007] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a barrier gate chassis shaft hole waterproof structure which has a simple structure, is practical, is easy to install, and can effectively improve the waterproofness of the barrier gate chassis.

[0008] In order to achieve the above purpose, the technical solution adopted by the present invention is: a waterproof structure of the shaft hole of a barrier gate chassis, including a chassis, a railing mounting spindle is passed through the chassis, a rear cover and a front cover are sleeved on the railing mounting spindle, and the rear cover and the front cover are respectively located on both sides of the chassis, the rear cover, the front cover and the chassis are connected by stainless steel countersunk screws, a second O-ring is arranged on the front cover and the second O-ring can contact with the chassis, a spindle sealing ring is interference-fitted on the railing mounting spindle, the spindle sealing ring can contact with the front cover, a V-groove is opened on the spindle sealing ring along the circumference, and the V-groove is located below the guide structure of the front cover.

[0009] Furthermore, the rear cover, front cover and chassis are respectively provided with a rear screw mounting hole, a front screw mounting hole and a spindle screw mounting hole, through which the stainless steel countersunk screws pass in sequence and are installed in cooperation, and a first O-ring is sleeved on the stainless steel countersunk screw, which is located in the front screw mounting hole and in contact with the nut of the stainless steel countersunk screw.

[0010] Furthermore, the rear cover, front cover and chassis are respectively provided with a rear mounting hole, a front mounting hole and a spindle mounting hole, and the number of the rear screw mounting holes, the front screw mounting holes and the spindle screw mounting holes are equal and are respectively evenly distributed around the rear mounting hole, the front mounting hole and the spindle mounting hole.

[0011] Furthermore, a front annular groove is formed on the front cover, and the front annular groove is located on a side of the front cover close to the chassis. The second O-ring matches the size of the front annular groove and is placed in the front annular groove.

[0012] Furthermore, a slope inclined toward the forward mounting hole is provided on the outer wall of the front cover, and a rear annular groove is also provided on the front cover, the rear annular groove is located below the slope, the rear annular groove and the slope are both located on the side of the front cover away from the chassis and together constitute a guide structure of the front cover.

[0013] Furthermore, a main shaft sealing groove is opened on the handrail mounting main shaft along the circumferential direction, the main shaft sealing ring is placed in the main shaft sealing groove, and the two ends are respectively in contact with the rear annular groove and the side wall of the main shaft sealing groove.

[0014] Furthermore, the side of the main shaft sealing ring in contact with the rear annular groove is a sealing lip, and the sealing lip is elastic.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Install the first type of sealing ring inside the countersunk screws used when installing the chassis, and improve the waterproof performance by tightening the O-ring and the countersunk screws;

[0017] 2. The contact surface of the chassis is waterproofed by using a groove and a second ring to press together;

[0018] 3. The inclined surface design of the front cover and the V-groove structure of the third sealing ring can cooperate with each other, and the elastic compression of the third sealing ring is used to improve the waterproof performance of the main shaft;

[0019] 4. An interference fit is adopted between the main shaft and the third sealing ring, which can achieve waterproofness and ensure the reliability of assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the waterproof structure of the shaft hole of the gate chassis in this embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of the waterproof structure of the shaft hole of the gate chassis in this embodiment;

[0022] Figure 3 This is a schematic diagram of the structure of the main shaft sealing ring and the main shaft sealing ring in this embodiment;

[0023] Figure 4 This is a schematic diagram of the structure of the stainless steel countersunk screw and the front cover in this embodiment;

[0024] Figure 5 Schematic diagram of the structure of the front cover in this embodiment;

[0025] Figure 6 is a cross-sectional view of the main shaft sealing ring in this embodiment;

[0026] Figure 7 It is a cross-sectional view of the cooperation between the main shaft sealing ring, the railing mounting main shaft and the front cover in this embodiment.

[0027] In the figure:

[0028] 1-chassis; 2-rear cover; 3-second O-ring; 4-front cover; 5-first O-ring; 6-stainless steel countersunk screw; 7-spindle sealing ring; 71-sealing lip; 72-connecting ring; 73-fixing ring; 8-railing installation spindle; 9-railing installation clamp; 10-gate movement; 11-spindle sealing groove. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] See attached Figure 1 , Attachment Figure 2As shown, a waterproof structure of the shaft hole of a barrier gate chassis, in one example, includes a barrier gate movement 10 and a railing mounting spindle 8, the barrier gate movement 10 is composed of a horizontal frame and bearings, the horizontal frame has two arc-shaped bearing mounting frames, and bearings are arranged on them, the railing mounting spindle 8 passes through the bearings and is installed in cooperation with the bearings, the two sides of the horizontal frame are respectively connected to the chassis 1 main board through the movement left mounting plate and the movement right mounting plate, one end of the railing mounting spindle 8 passes through the chassis 1 and is connected to the railing mounting clamp 9, which improves the overall safety of the barrier gate and the stability of the rotation of the railing mounting spindle 8.

[0031] See attached Figure 3 , Attachment Figure 4 As shown, the chassis 1 is provided with a spindle mounting hole for the railing mounting spindle 8 to pass through, and an even number of spindle screw mounting holes for the stainless steel countersunk screws 6 to pass through and be installed in cooperation. The chassis 1 is respectively provided with a rear cover 2 and a front cover 4 on both sides. The rear cover 2 is provided with a rear mounting hole for the railing mounting spindle 8 to pass through, and an even number of rear screw mounting holes for the stainless steel countersunk screws 6 to pass through and be installed in cooperation. The front cover 4 is provided with a front mounting hole for the railing mounting spindle 8 to pass through, and an even number of front screw mounting holes for the stainless steel countersunk screws 6 to pass through and be installed in cooperation. The number of rear screw mounting holes, front screw mounting holes and spindle screw mounting holes is equal and evenly distributed around the rear mounting holes, front mounting holes and spindle mounting holes, respectively, to improve the stability of the installation. The screw portion of the stainless steel countersunk screw 6 passes through the front screw mounting hole of the front cover 4, the spindle screw mounting hole of the chassis 1 and the rear screw mounting hole of the rear cover 2 in turn and is installed in coordination with them. At the same time, the railing mounting spindle 8 passes through the front cover 4, the chassis 1 and the rear cover 2 in turn and is installed in coordination with them, which can improve the installation stability between the railing mounting spindle 8 and the chassis 1.

[0032] In another example, see the attached Figure 4 As shown, each stainless steel countersunk screw 6 is sleeved with a first O-ring 5. When the stainless steel countersunk screw 6 is installed, the first O-ring 5 is located in the front screw mounting hole and contacts the nut of the stainless steel countersunk screw 6 and is squeezed by the nut, thereby improving the sealing between the stainless steel countersunk screw 6 and the front cover 4 and the waterproofness of the stainless steel screw 6 itself. At the same time, the countersunk installation is used to further improve the sealing of the chassis 1.

[0033] In another example, see the attached Figure 5As shown, the side of the front cover 4 close to the chassis 1 is the front end face, and the side away from the chassis 1 is the rear end face. A front annular groove is provided on the front end face of the front cover 4, and a second O-ring 3 is placed in the front annular groove. The size of the front annular groove matches that of the second O-ring 3. The second O-ring 3 is clamped by limiting the moving range of the second O-ring 3 to prevent the second O-ring 3 from falling out during use. When the front cover 4 is connected to the chassis 1 by the stainless steel countersunk screws 6, the second O-ring 3 can contact with the chassis 1 and improve the sealing between the front cover 4 and the chassis 1.

[0034] In another example, see the attached Figure 3 As shown, an inclined surface inclined toward the forward mounting hole is arranged on the outer wall of the rear end surface of the front cover 4, and a rear annular groove is provided on the rear end surface of the front cover 4, the rear annular groove is located between the front mounting hole and the front screw mounting hole, the front screw mounting hole is located between the inclined surface and the rear annular groove, the rear annular groove and the inclined surface together constitute the guide structure of the front cover 4, a spindle sealing groove 11 is circumferentially provided on the railing mounting spindle 8, the height distance between the spindle sealing groove 11 and the railing mounting spindle 8 is 3mm, and a spindle sealing ring 7 is placed on the spindle sealing groove 11, the spindle sealing ring 7 is composed of a sealing lip 71, a connecting ring 72 and a fixing ring 73, the sealing lip 71 is trumpet-shaped, and the end with a smaller opening is connected to the connecting ring 72, the lip tooth angle in this embodiment is 120°, that is, the connection between the sealing lip 71 and the connecting ring 72 and the connecting ring 72 is 3mm. Angle, the other end of the connecting ring 72 is connected to the fixing ring 73, the size of the fixing ring 73 is larger than the connecting ring 72, so that a V-shaped groove is formed between the sealing lip 71 and the fixing ring 73, the sealing lip 71, the connecting ring 72 and the inner ring of the fixing ring 73 are integrally formed, so that the part contacting the railing mounting spindle 8 is smoother, and the spindle sealing ring 7 will not be worn when the railing mounting spindle 8 moves. The size of the sealing lip 71 is larger than the rear mounting hole and contacts with the rear annular groove. The hollow part of the fixing ring 73 is larger than the spindle sealing groove 11 and smaller than the railing mounting spindle 8, and can contact with the side wall of the spindle sealing groove 11. The spindle sealing ring 7 forms an axial seal with its elastic sealing lip 71. The sealing lip 71 has good mobility and adaptability, so compared with other seals, it can compensate for larger angular deviations.

[0035] In another example, see the attached Figure 1 As shown, two railing lock buckles are arranged on the railing mounting clamp 9 facing each other, and the two railing lock buckles are respectively located at the upper and lower ends of the railing mounting clamp 9. The railing mounting clamp 9 in this embodiment is an object used to fasten two objects. The lock buckle generally refers to a buckle-type fastener installed on doors and windows for locking the doors and windows, which is composed of a movable part and a fixed part. The closing and opening of the doors and windows are achieved by combining and separating the movable part and the fixed part.

[0036] In this embodiment, the first O-ring 5, the second O-ring 3 and the main shaft sealing ring 7 are all made of nitrile rubber, which has the following advantages: 1. Strong oil resistance; 2. Heat resistance is better than that of natural rubber, styrene-butadiene rubber and other general-purpose rubbers. If an appropriate formula is selected, the maximum operating temperature can reach 130°C, and it can withstand a high temperature of 150°C in hot oil; 3. High wear resistance, 30% to 45% higher than that of natural rubber; 4. The polarity and trans-14 structure of nitrile rubber make its structure compact and its air permeability low. It and butyl rubber belong to rubbers with good air tightness; 5. The structural stability is strong, so the chemical corrosion resistance is better than that of natural rubber.

[0037] See attached Figure 6 , Attachment Figure 7 As shown, attached Figure 6 is a schematic diagram of the structure of the main shaft sealing ring 7, Figure 7 It is a schematic diagram of the cooperation between the main shaft sealing ring 7, the railing mounting main shaft 8 and the front cover 4, wherein:

[0038] d refers to the shaft diameter range of the inner ring of the main shaft sealing ring 7, and the size used in this embodiment is 36mm;

[0039] C refers to the thickness of the ring body of the fixing ring 73 excluding the hollow part, and the size used in this embodiment is 5 mm;

[0040] d+2C refers to the outer diameter of the fixing ring 73, which is 46 mm in this embodiment;

[0041] B refers to the thickness of the spindle seal ring 7, that is, the distance from the outer wall of the sealing lip 71 to the outer wall of the fixing ring 73, and the dimension used in this embodiment is 9 mm;

[0042] A refers to the thickness of the main shaft sealing ring 7 excluding the sealing lip 71, that is, the distance from the outer wall of the connecting ring 72 to the outer wall of the fixing ring 73, and the size used in this embodiment is 5.5 mm;

[0043] d1 refers to the diameter of the main shaft 8 of the railing installation, and the adopted size range is 38-43mm. The most preferred size in this embodiment is 38mm;

[0044] d2 refers to the diameter of the front mounting hole of the front cover 4, and the size used in this embodiment is 40 mm;

[0045] d3 refers to the diameter of the rear annular groove of the front cover 4, and the size used in this embodiment is 66 mm;

[0046] B1 refers to the width of the spindle sealing ring 7 after being tightened. The spindle sealing ring 7 is located in the spindle sealing groove 11, and the two sides of the spindle sealing ring 7 are respectively in contact with the rear annular groove and the railing mounting spindle 8. During the cooperation between the front cover 4 and the railing mounting spindle 8, the spindle sealing ring 7 will be squeezed by 2mm. In this embodiment, the width dimension after tightening is 7mm.

[0047] Before use, the waterproof structure needs to be installed. First, the first O-ring 1 is sleeved on the stainless steel countersunk screw 6, and the second O-ring 3 is placed in the front annular groove. Then, the stainless steel countersunk screw 6 is connected with the spindle screw mounting hole, the front screw mounting hole and the rear screw mounting hole to make the front cover 4, the rear cover 2 and the chassis 1 fastened. At this time, the stainless steel countersunk screw 6, the front cover 4, the rear cover 2, the first O-ring 1 and the second O-ring 3 can work together to achieve a preliminary seal on the chassis 1. The size of the rear cover 2 is larger than the front cover 4. The second O-ring 3 is added inside the front cover 4 and is located outside the stainless steel countersunk screw 6, so that the water flowing down from the chassis 1 does not enter the box body;

[0048] Then install the spindle sealing ring 7 onto the railing installation spindle 8. The railing installation spindle 8 is installed on the internal equipment through the bearing through the front cover 4 and the chassis 1. Since the spindle sealing ring 7 and the front cover 4 are in contact and elastically squeezed, the remaining part of the water flowing down from the chassis 1 will flow along the inclined surface of the front cover 4 to the outside of the gate after passing through the front cover 4, and the other part will flow into the V-shaped groove of the spindle sealing ring 7 along the rear end face of the front cover 4 and then flow to the outside of the gate, so that the water flowing down from the front cover 4 will not enter the box body through the hole on the railing installation spindle 8; the fixing ring 73 of the spindle sealing ring 7 is interference fit with the railing installation spindle 8, and the railing installation spindle 8 has a spindle sealing groove 11. The step structure makes it play a role of stopping after being assembled with the spindle sealing ring 7, and the spindle sealing The ring 7 will rotate with the railing installation spindle 8, and the conical sealing lip 71 can prevent the angle from shifting. When the railing installation spindle 8 rotates, centrifugal force will be generated. Under the action of centrifugal force, the friction force is reduced to avoid wear on the spindle sealing ring 7, and the stability of the operation of the barrier railing arm after assembly will not be affected. At the same time, the spindle sealing ring 7 can prevent external dirt from invading the interior. The connection part of the sealing lip 71 and the front cover 4 can ensure that the sealing lip 71 produces a slight pressing force on the sealed surface to achieve a lasting and effective seal. At this time, the spindle sealing ring 7, the railing installation spindle 8 and the front cover 4 can cooperate to further seal the chassis 1 and improve the waterproofness of the chassis 1. The solution of this embodiment can pass the IP55 waterproof inspection requirement.

[0049] Since the size of the front mounting hole after assembly (40mm) is larger than the shaft diameter size (38mm) of the railing mounting spindle 8, it can ensure that the railing mounting spindle 8 will not generate friction with the front cover 4 during rotation. The size of the front mounting hole (40mm) of the front cover 4 is smaller than the outer diameter size (46mm) of the spindle sealing ring 7, which can ensure that the spindle sealing ring 7 can seal with the front cover 4 after being tightened. The spindle sealing ring 7 only requires smaller tolerance requirements than other seals, which greatly reduces the processing requirements for production.

[0050] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof structure for an axis hole of a gate housing, comprising a housing (1), characterized in that: The chassis (1) is provided with a railing mounting spindle (8), and the railing mounting spindle (8) is sleeved with a rear cover (2) and a front cover (4), and the rear cover (2) and the front cover (4) are respectively located on both sides of the chassis (1), and the rear cover (2), the front cover (4) and the chassis (1) are connected by means of stainless steel countersunk screws (6), and the front cover (4) is provided with a second O-ring (3) and the second O-ring (3) can contact the chassis (1), and the railing mounting spindle (8) is interference-fitted with a spindle sealing ring (7), and the spindle sealing ring (7) can contact the front cover (4), and the spindle sealing ring (7) is composed of a sealing lip (71), a connecting ring (72) and a fixing ring (73). The sealing lip (71) is trumpet-shaped, and the end with a smaller opening is connected to the connecting ring (72), and the other end of the connecting ring (72) is connected to the fixing ring (73). The fixing ring (73) is larger than the connecting ring (72), so that a V-shaped groove is formed between the sealing lip (71) and the fixing ring (73). The front cover (4) is provided with a front mounting hole, and an inclined surface inclined toward the front mounting hole is provided on the outer wall of the front cover (4). The front cover (4) is also provided with a rear annular groove, and the rear annular groove is located below the inclined surface. The rear annular groove and the inclined surface are both located on the side of the front cover (4) away from the chassis (1) and together constitute a guide structure of the front cover (4), and the V-shaped groove is located below the guide structure of the front cover (4).

2. The waterproof structure of the shaft hole of the gate chassis according to claim 1, characterized in that: The rear cover (2), the front cover (4) and the chassis (1) are respectively provided with a rear screw mounting hole, a front screw mounting hole and a spindle screw mounting hole, through which the stainless steel countersunk screw (6) passes in sequence and is installed in coordination, and a first O-ring (5) is sleeved on the stainless steel countersunk screw (6), and the first O-ring (5) is located in the front screw mounting hole and in contact with the nut of the stainless steel countersunk screw (6).

3. The waterproof structure of the shaft hole of the gate chassis according to claim 2 is characterized by: The rear cover (2) and the chassis (1) are respectively provided with a rear mounting hole and a spindle mounting hole, and the rear screw mounting holes, the front screw mounting holes and the spindle screw mounting holes are equal in number and are respectively evenly distributed around the rear mounting hole, the front mounting hole and the spindle mounting hole.

4. The waterproof structure of the shaft hole of a gate chassis according to claim 1, characterized in that: The front cover (4) is provided with a front annular groove, the front annular groove being located on a side of the front cover (4) close to the chassis (1), and the second O-ring (3) matches the size of the front annular groove and is placed in the front annular groove.

5. The waterproof structure of the shaft hole of a gate housing according to claim 1, characterized in that: A spindle sealing groove (11) is provided on the handrail mounting spindle (8) along the circumferential direction, and the spindle sealing ring (7) is placed in the spindle sealing groove (11), with its two ends respectively contacting the rear annular groove and the side wall of the spindle sealing groove (11).

6. The waterproof structure of the shaft hole of a gate chassis according to claim 1, characterized in that: The side of the main shaft sealing ring (7) in contact with the rear annular groove is a sealing lip (71), and the sealing lip (71) is elastic.

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