A safety hat with cap-off alarm

Abstract

The application discloses a high-altitude operation safety cap with a cap-off alarm function and relates to the technical field of safety caps. The application comprises a cap body, a binding part installed on the cap body, the binding part being used for fixing the cap body with an operator, a prompt part comprising an elastic bending rod installed on the cap body, a rubber ball installed on the elastic bending rod and being used for contacting the neck of the operator, and a driving part installed on the cap body and connected with the elastic bending rod. The cap body is fixed on the head of the operator by the binding part, the rubber ball is installed on the cap body through the elastic bending rod, the driving part forces the rubber ball to be in contact with the neck of the operator when the cap body is worn, the rubber ball is separated from the neck of the operator when the cap body is about to fall off or is loosened through cooperation of the driving part, the operator feels uncomfortable at the neck, and thus the operator is alarmed, and the practicability of the device is improved.

Description

Technical Field

[0001] This application relates to the field of safety helmet technology, specifically to a high-altitude work safety helmet with a warning function when the helmet is removed. Background Technology

[0002] In most construction or electrical work, operators often need to work at heights, and for their safety, they need to wear safety helmets.

[0003] When wearing existing safety helmets, operators are often focused on their work at heights. If the helmet comes loose, they cannot react immediately and cannot tighten it in time, thus jeopardizing their safety when they continue working.

[0004] Therefore, this invention proposes a helmet with a warning function for high-altitude work to improve this problem. Summary of the Invention

[0005] The purpose of this application is to provide a helmet with a warning function for high-altitude work in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution: A type of high-altitude work safety helmet with a warning function upon removal of the helmet, comprising: The cap body is equipped with straps, which are used to secure the cap body to the operator; The warning device includes a flexible bend rod mounted on the cap body, on which a rubber ball is mounted for contact with the operator's neck; A drive component is installed on the cap body and is connected to an elastic bending rod. The drive component has two states. When the drive component is in the first state, the elastic bending rod drives the rubber ball to contact the operator's neck. When the drive component is in the second state, the elastic bending rod drives the rubber ball to separate from the operator's neck.

[0007] Furthermore, the driving component includes a connecting spring mounted on the cap body, the free end of the connecting spring being connected to an elastic bent rod, a sliding rod slidably mounted on the cap body, the end of the sliding rod contacting the operator's head, a driving rod mounted on the sliding rod, a driving block mounted on the free end of the driving rod, and a force-applying inclined surface provided on the driving block for abutting the end of the elastic bent rod. When the driving block abuts against the elastic bent rod, the elastic bent rod drives the rubber ball away from the operator.

[0008] Furthermore, a mounting shell is installed on the cap body, and a connecting spring is installed inside the mounting shell. A limiting groove is provided inside the mounting shell to slide with the driving block, thereby forcing the driving block to move closer to or away from the elastic bending rod in a straight line.

[0009] Furthermore, an oil storage cavity is provided inside the mounting shell, a sponge rod is installed in the oil storage cavity, a sponge block is installed in the limiting groove, the sponge block is connected to the sponge rod, the sponge block is slidably engaged with the drive rod, and the diameter of the drive rod is smaller than the diameter of the drive block.

[0010] Furthermore, the drive block is provided with a lubrication hole and a channel communicating with the lubrication hole. A sponge strip is installed in the channel, and the free end of the sponge strip contacts the inner wall of the limiting groove.

[0011] Furthermore, an airbag is installed on the end of the sliding rod that contacts the operator's head.

[0012] Furthermore, the strap includes a belt, and the cap body has two through slots located on both sides of the cap body. Both ends of the belt pass through the through slots so that when the cap body is worn on the operator's head, both ends of the belt are located at the operator's chin. One end of the belt has a mounting hole, and the other end has a fixing shell. The fixing shell has a compression spring installed on it, and the free end of the compression spring has a contact plate for contacting the operator's chin. The fixing shell has a through slot for the other end of the belt to pass through, and the contact plate has a rod for insertion into the mounting hole.

[0013] Furthermore, an expansion panel is installed on the sliding rod, a rocker arm is hinged to the cap body, a protrusion is constructed on the cap body, the protrusion is located at the projection of the rocker arm hinge point on the cap body, a long groove is installed on the belt, an abutment block for contacting the belt is installed at one end of the rocker arm, and an abutment rod that penetrates the long groove and contacts the expansion panel is installed at the other end, with the abutment rod slidably connected to the long groove.

[0014] Furthermore, a contact pad is installed on the contact plate, and the contact plate contacts the operator's chin through the contact pad. The contact pad has an arc-shaped surface.

[0015] Furthermore, the drive rod is arc-shaped, and multiple arc-shaped rods are installed on the sliding rod, with the arc-shaped rods and the drive rod surrounding the outside of the cap body.

[0016] The beneficial effects of this application are as follows: 1. This application uses straps to secure the cap to the operator's head. A rubber ball is installed on the cap via an elastic rod. When the cap is worn, a drive unit forces the rubber ball to remain in contact with the operator's neck. When the cap is about to fall off or loosen, the drive unit, in conjunction with the other components, causes the rubber ball to separate from the operator's neck, resulting in discomfort and triggering an alarm. This increases the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2 This is a schematic diagram of the cap structure of this application; Figure 3 This is a schematic diagram of the driver structure of this application; Figure 4 This is an exploded view of part of the structure of this application; Figure 5 This is an exploded view of the strap structure in this application; Figure 6 This is a three-dimensional sectional view of the installation shell structure of this application. Figure 1 ; Figure 7 This is a schematic diagram of the structure of the cap body in this application; Figure 8 This is a three-dimensional sectional view of the installation shell structure of this application. Figure 2 ; Figure 9 This is a three-dimensional sectional view of the installation shell structure of this application. Figure 3 ; Figure 10 This is a three-dimensional sectional view of the driving block structure of this application; Reference numerals: 1. Cap body; 2. Strap; 201. Belt; 202. Through groove; 203. Mounting hole; 204. Fixing shell; 205. Compression spring; 206. Contact plate; 207. Through groove; 208. Insert rod; 3. Indicator; 301. Elastic bending rod; 302. Rubber ball; 4. Driving component; 401. Connecting spring; 402. Sliding rod; 403. Driving rod; 404. Driving block; 5. Mounting shell; 501. Oil storage chamber; 502. Sponge rod; 503. Sponge block; 6. Limiting groove; 7. Lubrication hole; 8. Sponge strip; 9. Airbag cushion; 10. Rocker; 11. Long groove; 12. Abutment block; 13. Abutment rod; 14. Expanding panel; 15. Contact pad; 16. Arc rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] like Figure 1 - Figure 10 As shown, the high-altitude work safety helmet with a removal warning mechanism proposed in Embodiment 1 of this application includes: The cap body 1 is equipped with a strap 2, which is used to fix the cap body 1 to the operator. The operator uses the strap 2 to tie the cap body 1 to the operator's head, so that the cap body 1 protects the operator's head. The warning device 3 includes an elastic bend 301 mounted on the cap body 1, and a rubber ball 302 mounted on the elastic bend 301 for contacting the operator's neck. When the cap body 1 is worn on the operator's head, the elastic bend 301 is located behind the cap body 1, and the rubber ball 302 is located at the back of the operator's neck. The driving component 4 is installed on the cap body 1 and is connected to the elastic bending rod 301. The driving component 4 has two states. When the driving component 4 is in the first state, the elastic bending rod 301 drives the rubber ball 302 to contact the operator's neck. When the driving component 4 is in the second state, the elastic bending rod 301 drives the rubber ball 302 to separate from the operator's neck. When the cap body 1 is in an idle state, the driving component 4 is in the second state. When the cap body 1 is worn on the operator's head, it is in the first state. When the operator puts on the helmet 1, the drive unit 4 is in the first state, forcing the elastic curved rod 301 close to the operator, so that the rubber ball 302 contacts the back of the operator's neck, thereby applying a resistance force to the back of the operator's neck. As the operator climbs upward, he will gradually get used to this resistance force. When the helmet 1 loosens during operation, the drive unit 4 is in the second state, moving the rubber ball 302 away from the back of the operator's neck. At this time, because the operator has been used to the resistance force, when the resistance force is suddenly removed, the operator will feel a cool sensation on the back of his neck, which will then serve as an alarm. Compared with the common method of knocking in the prior art, although both are based on tactile alarms, knocking alarms can startle operators who are concentrating on their work. When operators are at height, being startled can easily lead to safety hazards. In this application, the force removal is gentler, only making the operator feel uncomfortable, without causing an overreaction, thus increasing the operator's safety. When the safety helmet is securely worn, the rubber ball 302 continuously contacts and slightly presses against the back of the operator's neck, forming a stable tactile reference point. Once the helmet 1 becomes loose, the drive component 4 switches states, and the rubber ball 302 immediately disengages, causing the pressure sensation on the back of the neck to disappear instantly. This sudden change in tactile sensation can gently and effectively attract the operator's attention, indicating that the safety helmet has become loose. This avoids the fright that may be caused by traditional sound and light or strong vibration alarms, and is especially suitable for high-altitude working environments that require a high degree of concentration, thus improving the acceptance and reliability of safety alarms. Compared with existing technologies, the cap body 1 is fixed to the operator's head by the strap 2. A rubber ball 302 is installed on the cap body 1 by the elastic bending rod 301. When the cap body 1 is worn, the driving component 4 forces the rubber ball 302 to be in contact with the operator's neck. When the cap body 1 is about to fall off or loosen, the driving component 4 causes the rubber ball 302 to separate from the operator's neck, causing an unusual discomfort in the operator's neck and thus alarming the operator, which increases the practicality of the device.

[0020] like Figure 3 and Figure 6 As shown, in some embodiments, the drive member 4 includes a connecting spring 401 mounted on the cap body 1. The free end of the connecting spring 401 is connected to the elastic bent rod 301. The connecting spring 401 forces the elastic bent rod 301 to move toward the inner cavity of the cap body 1, so that when the device is idle, the drive member 4 is in a first state. A sliding rod 402 is slidably mounted on the cap body 1. The end of the sliding rod 402 contacts the operator's head. The sliding rod 402 slides through the cap body 1, so that one end is located in the inner cavity of the cap body 1. When the operator wears the cap, the head can push the sliding rod 402 upward. A drive rod 403 is mounted on the sliding rod 402, and a drive block 404 is mounted on the free end of the drive rod 403. The drive block 404 has a force-applying inclined surface for contacting the end of the elastic bent rod 301. When the drive block 404 contacts the elastic bent rod 301, the elastic bent rod 301 drives the rubber ball 302 away from the operator. Figure 1 From the main perspective, when the device is idle, the sliding rod 402, the driving rod 403 and the driving block 404 move downward under gravity, causing the inclined surface on the driving block 404 to abut against the end of the elastic bent rod 301. The downward force is guided by the inclined surface to generate a horizontal component force, which in turn causes the driving block 404 to abut against the elastic bent rod 301, forcing the elastic bent rod 301 to slide away from the inner cavity of the cap body 1. When the operator wears the helmet securely, their head contacts the sliding rod 402, pushing it upwards. This causes the drive block 404 to move away from the elastic curved rod 301, gradually releasing the resistance between them. Through the push of the connecting spring 401, the elastic curved rod 301 moves to the position where the rubber ball 302 contacts the back of the operator's neck. When the helmet 1 loosens, there is a gap between the helmet 1 and the operator's head, allowing the sliding rod 402 to lose sufficient upward support. Under the action of gravity and the elastic force of the connecting spring 401, it falls back downwards, causing the drive block 404 to descend accordingly. This causes the drive block 404 to contact the elastic curved rod 301, forcing the rubber ball 302 away from the back of the operator's neck, thus providing an alarm to the operator. This allows the device to promptly alert the operator, increasing its practicality.

[0021] like Figure 6 and Figure 8 As shown, in some embodiments, a mounting shell 5 is installed on the cap body 1, and a connecting spring 401 is installed inside the mounting shell 5. A limiting groove 6 is provided inside the mounting shell 5 to slide with the driving block 404, thereby forcing the driving block 404 to approach or move away from the elastic bent rod 301 in a straight line. The inner wall of the limiting groove 6 contacts the side wall of the driving block 404, so that when the driving block 404 slides, its sliding path is restricted by the limiting groove 6, so that it can resist the elastic bent rod 301 more stably, increasing the practicality of the device.

[0022] like Figure 6 As shown, in some embodiments, an oil storage cavity 501 is provided inside the mounting shell 5, a sponge rod 502 is installed in the oil storage cavity 501, a sponge block 503 is installed in the limiting groove 6, the sponge block 503 is connected to the sponge rod 502, the sponge block 503 is slidably engaged with the drive rod 403, the diameter of the drive rod 403 is smaller than the diameter of the drive block 404, an opening is provided on the sponge block 503 to slidably engage with the drive rod 403, the diameter of the drive block 404 is larger than the diameter of the opening, lubricating oil is provided in the oil storage cavity 501, and an oil inlet is provided on the mounting shell 5 (not shown in the figure) to facilitate the addition of lubricating oil into the mounting shell 5; When the device is in use, the sponge rod 502 absorbs the lubricating oil in the oil storage chamber 501, so that the sponge rod 502 and the sponge block 503 are fully soaked. When the drive rod 403 pulls the drive block 404 upward, the drive block 404 squeezes the sponge block 503, so that the lubricating oil in the sponge block 503 comes into contact with the drive block 404 and the inner wall of the limiting groove 6, lubricating the drive block 404, reducing the wear of the drive block 404 when sliding, and also reducing the friction between the drive block 404 and the limiting groove 6, thereby facilitating the sliding of the drive block 404 and increasing the feasibility of the device. When the drive block 404 leaves the sponge block 503, the sponge block 503 rebounds and draws new lubricating oil from the sponge rod 502 and the oil storage chamber 501. This structure realizes active, metered pumping and circulation of lubricating oil, which greatly extends the effective lubrication time and ensures the reliability of lubrication compared to a simple oil seepage design.

[0023] like Figure 10As shown, in some embodiments, the drive block 404 has a lubrication hole 7 and a channel communicating with the lubrication hole 7. A sponge strip 8 is installed in the channel, and the free end of the sponge strip 8 contacts the inner wall of the limiting groove 6. The opening of the lubrication hole 7 is located on the side where the drive block 404 contacts the sponge block 503. When the drive block 404 and the sponge block 503 come into contact, some lubricating oil will enter the lubrication hole 7. After the lubricating oil enters the lubrication hole 7, it will soak the sponge strip 8. Then, the lubricating oil is applied to the inner wall of the limiting groove 6 through the sponge strip 8. Compared with the lubricating oil flowing to the gap between the limiting groove 6 and the drive block 404 by itself, the lubricating oil can be more evenly distributed on the inner wall of the limiting groove 6 by the sponge strip 8, which increases the practicality of the device.

[0024] like Figure 3 As shown, in some embodiments, an airbag 9 is installed on the end of the sliding rod 402 that contacts the operator's head. The sliding rod 402 contacts the operator through the airbag 9, which reduces the discomfort caused to the operator's head by the sliding rod 402 and increases the practicality of the device. Furthermore, by extending the sliding rod 402 through the airbag cushion 9, the operator can smoothly push the sliding rod 402 when wearing the cap 1, which increases the feasibility of the device.

[0025] like Figure 2 and Figure 5 As shown, in some embodiments, the strap 2 includes a leather strap 201, and the cap body 1 has two through slots 202, which are located on both sides of the cap body 1. The two ends of the leather strap 201 pass through the through slots 202, so that when the cap body 1 is worn on the operator's head, the two ends of the leather strap 201 are located at the operator's chin, and its shape is as follows. Figure 1 As shown; One end of the belt 201 has a mounting hole 203, and the other end has a fixed shell 204. A compression spring 205 is installed on the fixed shell 204. A contact plate 206 for contacting the operator's chin is installed on the free end of the compression spring 205. A through groove 207 is provided on the fixed shell 204 for the other end of the belt 201 to pass through. A rod 208 for inserting into the mounting hole 203 is installed on the contact plate 206. The compression spring 205 forces the contact plate 206 close to the fixed shell 204. The end of the belt 201 with the mounting hole 203 is designated as the moving end, and the end with the fixed shell 204 is designated as the fixed end. When the device is being worn, the cap 1 is placed over the operator's head, the contact plate 206 is pulled away from the fixed shell 204, and the moving end is inserted into the fixed shell 204 and passes through the through slot 207. By pulling the moving end, the cap 1 can be worn more tightly on the operator's head, which increases the practicality of the device. When it is necessary to remove the cap 1, push the belt 201 away from the chin to disengage the contact plate 206. Then pull the contact plate 206 to separate the insert 208 from the mounting hole 203, thereby disconnecting the belt 201.

[0026] like Figure 4 and Figure 7 As shown, in some embodiments, an expansion panel 14 is mounted on the sliding rod 402, a rocker 10 is hinged to the cap body 1, a protrusion is constructed on the cap body 1, the protrusion is located at the projection of the hinge point of the rocker 10 on the cap body 1, an elongated groove 11 is mounted on the belt 201, an abutment block 12 for abutting against the belt 201 is mounted on one end of the rocker 10, and an abutment rod 13 that penetrates the elongated groove 11 and contacts the expansion panel 14 is mounted on the other end. The abutment rod 13 is slidably connected to the elongated groove 11, and the length of the elongated groove 11 is greater than the diameter of the abutment rod 13, so that when the rocker 10 rotates, the abutment rod 13 has enough space to move. When the belt 201 is tightened, it abuts against the abutment block 12, forcing the rocker arm 10 to rotate. This causes the abutment rod 13 to abut against the expansion panel 14, thereby pushing the sliding rod 402 upward. When the cap 1 is worn, the abutment rod 13 pushes the drive rod 403 upward, allowing the drive block 404 to stably disengage from the elastic curved rod 301. At this time, the belt 201 is taut, restricting the rotation of the rocker arm 10. The force of the abutment rod 13 against the drive rod 403 is set as F. A Let F be the force exerted by the operator's head on the drive lever 403 to lift it upwards. B F A Greater than F B Therefore, it can greatly reduce the discomfort of the operator's head during use, and because of F A Because the proportion is relatively large, the head movements of the operator, such as turning the head, have little impact on the drive rod 403 and the elastic bending rod 301 when the cap 1 is loose, the belt 201 is loose, and the rocker plate 10 can react in time, which increases the sensitivity of the device. When worn securely, most of the force used to keep the sliding bar 402 on top (i.e., maintain the first state) comes from the mechanical support provided by the taut belt 201 through the rocker 10, rather than relying solely on the continuous pressure of the operator's head on the sliding bar 402. This greatly reduces the discomfort of the airbag cushion 9 pressing on the head, allowing for comfortable wear for extended periods. When the cap 1 is loose, the belt 201 reduces its contact with the abutment block 12, the rocker 10 resumes rotation, the sliding rod 402 can push the abutment rod 13 downward, and there is also a gap between the cap 1 and the operator's head, so that the sliding rod 402 can move downward smoothly, thereby forcing the drive rod 403 to drive the drive block 404 to separate from the elastic bent rod 301. Once the belt 201 becomes loose in any way (which is the primary sign that the helmet is coming loose), the pressure on the abutment block 12 immediately decreases. The rocker 10 rotates rapidly in the opposite direction under the downward pressure of the sliding rod 402 and its own restoring force. The sliding rod 402 then falls down, and the drive block 404 can quickly switch to the second state to trigger an alarm. This mechanism directly senses the tightness of the strap, which is more direct and reliable than relying solely on changes in head pressure, and has a faster response. The entire system forms a dual-input, logic AND gate-based alarm triggering mechanism, which brings unexpected reliability gains, in conjunction with the following mechanism: Sensor 1 (top of head): The sliding rod 402 contacts the top of the head to sense the displacement of the hat body 1 relative to the top of the head; Sensor 2 (Jaw): The system of belt 201, rocker 10, and abutment block 12 senses changes in the pretension of the strap; Actuator (alarm end): Drive block 404 and elastic bending rod 301; Logical Relationship: The condition for the drive block 404 to trigger the "alarm state" is that it moves downward. Now, this downward movement is constrained by two conditions: the driving force on the head decreases, that is, the hat body 1 moves upward relative to the head; the tension of the belt 201 decreases, that is, the strap loosens. Since the rocker arm 10 converts the tension of the belt 201 into an upward supporting force on the sliding rod 402, the sliding rod 402 can only fall smoothly when both show a tendency to loosen. When the operator is working at height, the common actions of looking down, looking up, or turning the head may instantly change the contact pressure between the top of the head and the hat body 1. If there is only a head sensor, this instantaneous pressure change may lead to false alarms. However, in this system, as long as the belt 201 is still tight, the strong supporting force provided by the rocker arm 10 can "clamp" the sliding rod 402, preventing it from falling due to the operator's normal head movements. The system filters out most false alarm scenarios in principle. This is a mechanical "filtering" design.

[0027] like Figure 5 As shown, in some embodiments, a contact pad 15 is installed on the contact plate 206. The contact plate 206 contacts the operator's chin through the contact pad 15. The contact pad 15 has an arc-shaped surface. The outer surface of the contact pad 15 is made of leather or cloth, and the inner surface is filled with sponge, so that the contact pad 15 and the operator's chin have a flexible contact. Moreover, the arc-shaped surface can fit the operator's chin better, increasing the comfort of the device during use.

[0028] like Figure 3As shown, in some embodiments, the drive rod 403 is arc-shaped, and multiple arc-shaped rods 16 are installed on the sliding rod 402. The arc-shaped rods 16 and the drive rod 403 surround the outside of the helmet body 1. The drive rod 403 and the arc-shaped rods 16 form a barrier outside the helmet body 1. When the operator wears the helmet, the foreign object will first come into contact with the drive rod 403 and the arc-shaped rods 16, and the force will be transmitted to the helmet body 1 through the two, and finally to the operator's head, which further increases the protective effect of the helmet body 1 on the operator. The "exoskeleton" structure composed of the arc-shaped rods 16 not only plays a secondary protective role, but also makes the safety helmet more ventilated and heat dissipated. Air can circulate freely between the helmet body 1 and the exoskeleton. Compared with the smooth shell that is close to the helmet body 1, this open skeleton structure can more effectively remove heat when exposed to wind during high-altitude operations, improving the comfort of wearing in summer. It can also be used as a gripper, making it convenient for the operator to hold the exoskeleton for wearing or adjustment, avoiding touching and soiling the helmet body 1. Furthermore, during the process, the sliding rod 402 is supported by the abutting rod 13, so the force will not be directly applied to the operator's head through the sliding of the sliding rod 402, which increases the safety of the device.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-altitude work safety helmet with a warning function upon removal of the helmet, characterized in that, include: The cap body (1) is equipped with a strap (2) which is used to secure the cap body (1) to the operator. The warning device (3) includes an elastic bend (301) mounted on the cap body (1), on which a rubber ball (302) for contacting the operator's neck is mounted. A drive component (4) is installed on the cap body (1). The drive component (4) is connected to the elastic bending rod (301). The drive component (4) has two states. When the drive component (4) is in the first state, the elastic bending rod (301) drives the rubber ball (302) to contact the operator's neck. When the drive component (4) is in the second state, the elastic bending rod (301) drives the rubber ball (302) to separate from the operator's neck.

2. The high-altitude work safety helmet with a removal warning function as described in claim 1, characterized in that, The driving component (4) includes a connecting spring (401) mounted on the cap body (1). The free end of the connecting spring (401) is connected to the elastic bending rod (301). A sliding rod (402) is slidably mounted on the cap body (1). The end of the sliding rod (402) contacts the operator's head. A driving rod (403) is mounted on the sliding rod (402). A driving block (404) is mounted on the free end of the driving rod (403). The driving block (404) has a force-applying inclined surface for abutting the end of the elastic bending rod (301). When the driving block (404) abuts against the elastic bending rod (301), the elastic bending rod (301) drives the rubber ball (302) away from the operator.

3. The high-altitude work safety helmet with a removal warning function as described in claim 2, characterized in that, The cap body (1) is equipped with a mounting shell (5), and a connecting spring (401) is installed inside the mounting shell (5). The mounting shell (5) has a limiting groove (6) that slides with the driving block (404), thereby forcing the driving block (404) to move closer to or away from the elastic bent rod (301) in a straight line.

4. The high-altitude work safety helmet with a removal warning function as described in claim 3, characterized in that, An oil storage chamber (501) is provided inside the mounting shell (5). A sponge rod (502) is installed inside the oil storage chamber (501). A sponge block (503) is installed inside the limiting groove (6). The sponge block (503) is connected to the sponge rod (502). The sponge block (503) is slidably engaged with the drive rod (403). The diameter of the drive rod (403) is smaller than the diameter of the drive block (404).

5. The high-altitude work safety helmet with a removal warning function as described in claim 4, characterized in that, The drive block (404) has a lubrication hole (7) and a channel communicating with the lubrication hole (7). A sponge strip (8) is installed in the channel, and the free end of the sponge strip (8) contacts the inner wall of the limiting groove (6).

6. The high-altitude work safety helmet with a removal warning function as described in claim 5, characterized in that, An airbag (9) is installed on the end of the sliding rod (402) that contacts the operator's head.

7. The high-altitude work safety helmet with a removal warning function as described in claim 6, characterized in that, The strap (2) includes a belt (201). The cap (1) has a through groove (202). There are two through grooves (202) located on both sides of the cap (1). The two ends of the belt (201) pass through the through grooves (202) so that when the cap (1) is worn on the operator's head, the two ends of the belt (201) are located at the operator's chin. One end of the belt (201) has a mounting hole (203), and the other end has a fixing shell (204). The fixing shell (204) has a compression spring (205). The free end of the compression spring (205) has a contact plate (206) for contacting the operator's chin. The fixing shell (204) has a through groove (207) for the other end of the belt (201) to pass through. The contact plate (206) has a plug (208) for inserting into the mounting hole (203).

8. The high-altitude work safety helmet with a removal warning function as described in claim 7, characterized in that, An expansion panel (14) is installed on the sliding rod (402), a rocker (10) is hinged on the cap body (1), a protrusion is constructed on the cap body (1), the protrusion is located at the projection of the hinge point of the rocker (10) on the cap body (1), a long groove (11) is installed on the belt (201), an abutment block (12) for abutting against the belt (201) is installed at one end of the rocker (10), and an abutment rod (13) that penetrates the long groove (11) and contacts the expansion panel (14) is installed at the other end, and the abutment rod (13) is slidably connected to the long groove (11).

9. The high-altitude work safety helmet with a removal warning function as described in claim 8, characterized in that, A contact pad (15) is installed on the contact plate (206). The contact plate (206) contacts the operator's chin through the contact pad (15). The contact pad (15) has an arc-shaped surface.

10. The high-altitude work safety helmet with a removal warning function according to claim 9, characterized in that, The drive rod (403) is arc-shaped, and multiple arc-shaped rods (16) are installed on the sliding rod (402). The arc-shaped rods (16) and the drive rod (403) surround the outside of the cap body (1).

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