A gate anti-falling bolt device

Abstract

The utility model discloses a gate anti -falling bolt device, include: bolt sleeve, drive mechanism and bolt core, the bolt sleeve is hollow structure, the bolt sleeve inside is equipped with the guide channel, drive mechanism sets up on bolt sleeve, drive mechanism is equipped with the connecting shaft of being suitable for telescopic motion, bolt core is slidably arranged in the guide channel of bolt sleeve, the connecting shaft of drive mechanism is suitable for the action bolt core, and bolt core is suitable for under the drive of drive mechanism and extends to first station or retracts into the bolt sleeve to second station, the utility model discloses not only can lock the gate when the gate opens to the corresponding height, and compact structure, convenient to use, and the wide application range.

Description

Technical Field

[0001] This utility model relates to a gate anti-fall bolt device. Background Technology

[0002] Currently, in the fields of industrial production and construction, the safety of falling heavy equipment, large doors, and lifting devices is receiving increasing attention. Existing fall protection devices mostly adopt mechanical or pneumatic pin structures to prevent personal injury and equipment damage caused by accidental falling heavy objects.

[0003] After searching the existing technology, a Chinese patent with publication number CN219619449U was found to disclose a lifting anti-fall device. The pin assembly in this patent includes a single-acting cylinder, a pin, and a non-powered spring. The single-acting cylinder drives the pin to perform locking and unlocking operations. However, it was found in use that the pneumatic pin device requires a matching air source and air hose, which is inconvenient to use in outdoor environments. Furthermore, the air hose is prone to aging and damage, resulting in high maintenance costs. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a gate anti-fall bolt device, which can not only lock the gate when it is opened to the corresponding height, but also has a compact structure, is easy to use, and has a wide range of applications.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a gate anti-fall bolt device, comprising:

[0006] A pin sleeve, wherein the pin sleeve has a hollow structure and a guide channel is provided inside the pin sleeve;

[0007] A drive mechanism is provided on the pin sleeve, and the drive mechanism is provided with a connecting shaft suitable for telescopic movement;

[0008] A pin core is slidably disposed in the guide channel of the pin sleeve. The connecting shaft of the drive mechanism is adapted to actuate the pin core. The pin core is adapted to extend to the first position under the drive of the drive mechanism to insert into the corresponding hole of the door or retract into the pin sleeve and move to the second position to disengage from the corresponding hole of the door.

[0009] Furthermore, the drive mechanism is adapted to operate in an energized state;

[0010] The gate anti-fall bolt device also includes a power failure operation mechanism, which is adapted to be actuated when the drive mechanism is de-energized and cannot work, so as to actuate the bolt core to extend or retract the bolt sleeve.

[0011] Furthermore, in order to maintain the function of locking the gate when it is opened to the corresponding height even when the drive mechanism is powered off, the power-off operating mechanism includes:

[0012] A push-pull electromagnet includes a push rod, the rear end of which is connected to a drive mechanism, and the front end of which is connected to a pin core. When the drive mechanism is de-energized and cannot work, the push-pull electromagnet is energized to extend the push rod, thereby causing the pin core to extend. Conversely, the push-pull electromagnet is de-energized to retract the push rod, thereby causing the pin core to retract.

[0013] Furthermore, the gate anti-fall bolt device also includes a power failure switching control device, which includes:

[0014] A current sensor connected to the drive mechanism to detect whether the drive mechanism is energized;

[0015] A position switch installed on the pin sleeve to detect whether the pin core is in the first position;

[0016] Start / stop switch;

[0017] The controller is connected to the output terminals of the current sensor, the position switch, and the start / stop switch, and is also connected to the push-pull electromagnet. The controller is adapted to control the gain and loss of power of the push-pull electromagnet based on the signals fed back from the current sensor, the position switch, and the start / stop switch.

[0018] Furthermore, in order to adjust the extension length of the pin core relative to the pin sleeve, the connecting shaft is a threaded shaft structure;

[0019] The rear end of the pin core is provided with an internal threaded hole, which is threadedly connected to the connecting shaft;

[0020] The threaded connection is adapted to adjust the extension length of the pin core relative to the pin sleeve by means of relative rotation between the connecting shaft and the pin core.

[0021] Furthermore, the gate anti-fall bolt device also includes a locking nut, which is threaded onto the connecting shaft;

[0022] The locking nut is adapted to be tightened to abut the rear end of the pin core after the extension length of the pin core relative to the pin sleeve has been adjusted, so as to lock the relative position of the pin core and the connecting shaft.

[0023] Furthermore, a specific structure of a driving mechanism is provided, the driving mechanism comprising:

[0024] A guide fixing mechanism is installed inside the pin sleeve, and a guide groove is provided on the guide fixing mechanism;

[0025] A rotary drive source is installed within the guide fixing mechanism, and the rotary drive source is provided with a rotary output shaft;

[0026] A gear, which is connected to the rotary output shaft of the rotary drive source;

[0027] A rack, which is slidably disposed in the guide groove of the guide fixing mechanism, and meshes with the gear;

[0028] The connecting shaft is fixedly connected to the rack, and the rotary drive source is adapted to convert the rotary motion into the linear extension and retraction motion of the connecting shaft through gear meshing with the rack.

[0029] Furthermore, the front end of the pin core has a tapered structure.

[0030] Furthermore, the pin sleeve includes:

[0031] Guide sleeve body, wherein the guide sleeve body is a hollow cylindrical structure;

[0032] A guide sleeve, which is a cylindrical structure, is embedded and fixed at the outlet end of the guide sleeve body, and the circular inner hole of the guide sleeve forms the guide channel.

[0033] Furthermore, the gate anti-fall pin device also includes a dustproof bushing, which is disposed between the guide sleeve and the guide sleeve body.

[0034] By adopting the above technical solution, this utility model has the following beneficial effects:

[0035] In this invention, when the drive mechanism is energized, the extension or retraction of the pin core is implemented by the drive mechanism. Specifically, the drive mechanism is set on the pin sleeve and can be directly connected to the pin core through its connecting shaft. When the door is opened to the corresponding height, the drive mechanism drives the connecting shaft to perform telescopic movement, causing the pin core to slide in the guide channel of the pin sleeve, so that the pin core extends out of the pin sleeve to the first working position and is inserted into the corresponding hole of the door, thereby realizing the mechanical locking of the door and preventing the door from falling.

[0036] In addition, when the drive mechanism is detected to be de-energized, the extension or retraction of the pin core can be achieved through the de-energized operating mechanism. In this state, the electromagnet power supply state can be switched by the start / stop switch. When locking is required, the push-pull electromagnet is energized by operating the start / stop switch, and the push-pull electromagnet pushes the pin core to extend to the first position to lock the door. When locking is not required, the push-pull electromagnet is de-energized by operating the start / stop switch, and the pin core is pulled back to the second position, thereby unlocking the door. This ensures that the locking and unlocking states of the door can be effectively controlled under any circumstances.

[0037] In addition, when the drive mechanism is detected to be de-energized, the position switch can be used to detect whether the pin core is in the first position. When the pin core is detected to be in the first position, the push-pull electromagnet is controlled to be energized to keep the pin core in the first position.

[0038] In addition, the connecting shaft adopts a threaded shaft structure that mates with the internal threaded hole of the pin core. The extension length of the pin core can be precisely adjusted by relative rotation, and the adjustment position can be reliably locked with the locking nut to meet the needs of different working conditions. The tapered structure at the front end of the pin core facilitates alignment and insertion into the locking hole, improving the ease of operation. The pin sleeve adopts a combination structure of guide sleeve body and guide sleeve, which, together with the dustproof bushing, effectively prevents dust from entering and extends the service life of the device.

[0039] In summary, the gate anti-fall bolt device provided by this utility model has a compact structure and reliable operation. It not only achieves convenient operation with electric drive and wide environmental adaptability, but also has automatic power failure protection function and adjustable extension length function, which significantly improves the safety, reliability and practicality of the anti-fall protection device. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the gate anti-fall bolt device in Embodiment 1. Figure 1 ;

[0041] Figure 2 This is a schematic diagram of the gate anti-fall bolt device in Embodiment 1. Figure 2 ;

[0042] Figure 3 This is a front view of the gate anti-fall bolt device in Embodiment 1;

[0043] Figure 4 This is a schematic diagram of the gate anti-fall bolt device in Embodiment 2;

[0044] Figure 5 This is a schematic diagram of the gate anti-fall bolt device in Embodiment 3;

[0045] Figure 6This is a structural schematic diagram of the gate anti-fall bolt device in Embodiment 4;

[0046] Figure 7 This is a schematic diagram of the gate anti-fall bolt device in Embodiment 5;

[0047] Figure 8 This is a schematic diagram of the gate anti-fall bolt device in Example 6. Detailed Implementation

[0048] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0049] Example 1: As Figure 1-3 As shown, a gate anti-fall bolt device includes:

[0050] The pin sleeve 1 is a hollow structure, and a guide channel 11 is provided inside the pin sleeve 1.

[0051] Drive mechanism 2 is mounted on pin sleeve 1 and has a connecting shaft 21 suitable for telescopic movement.

[0052] The pin core 3 is slidably disposed in the guide channel 11 of the pin sleeve 1. The connecting shaft 21 of the drive mechanism is adapted to actuate the pin core 3. The pin core 3 is adapted to extend to the first working position or retract into the pin sleeve 1 and to the second working position under the drive of the drive mechanism 2.

[0053] In this embodiment, the pin core 3 can be directly connected to the connecting shaft 21 of the drive mechanism 2.

[0054] In this embodiment, the driving mechanism can be an electric cylinder to realize the extension and locking of the pin core 3; of course, the driving mechanism can also be other structures.

[0055] In this embodiment, as Figure 1-3 As shown, when the drive mechanism 2 is energized, the extension or retraction of the pin core 3 is implemented by the drive mechanism 2. Specifically, the drive mechanism 2 is mounted on the pin sleeve 1 and connected to the pin core 3 via its connecting shaft 21. When the door is opened to the corresponding height, the drive mechanism 2 drives the connecting shaft 21 to extend, causing the pin core 3 to slide within the guide channel 11 of the pin sleeve 1. This allows the pin core 3 to extend out of the pin sleeve 1 to the first position and insert into the locking hole of the raised door, thus mechanically locking the door and preventing it from falling. When it is necessary to unlock, the drive mechanism 2 drives the connecting shaft 21 to retract, causing the pin core 3 to retract back into the pin sleeve 1 and to the second position.

[0056] Example 2: This example is basically the same as Example 1, except that the drive mechanism 2 is adapted to operate when energized;

[0057] The gate anti-fall bolt device also includes a power-off operating mechanism, which is adapted to be activated when the drive mechanism 2 is de-energized and cannot work, so as to extend or retract the bolt core 3 into the bolt sleeve 1.

[0058] like Figure 4 As shown, the operating mechanism after power failure includes:

[0059] The push-pull electromagnet 42 includes a push rod. The rear end of the push rod is connected to the drive mechanism 2, and the front end of the push rod is connected to the pin core 3. When the drive mechanism is de-energized and cannot work, the push-pull electromagnet 42 is energized to extend the push rod, thereby causing the pin core 3 to extend. The push-pull electromagnet 42 is de-energized to retract the push rod, thereby causing the pin core 3 to retract.

[0060] The gate anti-fall bolt device also includes a power failure switching control device, which includes:

[0061] A current sensor connected to the drive mechanism to detect whether the drive mechanism is energized;

[0062] A position switch 43 is installed on the pin sleeve 1 to detect whether the pin core 3 is in the first position;

[0063] Start / stop switch;

[0064] The controller is connected to the output terminals of the current sensor, position switch 43, and start / stop switch respectively. The controller is also connected to the push-pull electromagnet 42. The controller is suitable for controlling the gain and loss of power of the push-pull electromagnet 42 according to the signals fed back by the current sensor, position switch 43, and start / stop switch.

[0065] In this embodiment, the drive mechanism is connected to the mains power supply, while the push-pull electromagnet 42 is powered by an emergency energy storage device, which can be a battery. The drive mechanism can be a cylinder whose piston can move freely after power failure. The cylinder does not maintain pressure after power failure and will not restrict the movement of the pin core 3.

[0066] Specifically, in this embodiment, since the drive mechanism 2 is not energized, it does not restrict the movement of the pin core 3. The movement of the pin core 3 is driven by the push-pull electromagnet 42. When the current sensor detects that the drive mechanism 2 is not energized and the position switch 43 detects that the pin core 3 is not in the first position, i.e., in the second position, the controller controls the energization and de-energization of the push-pull electromagnet 42 by opening and closing the start / stop switch, thereby making the pin core 3 in the first position or the second position, realizing the function of locking or unlocking the door.

[0067] In addition, when the current sensor detects that the drive mechanism 2 is not powered and the position switch detects that the pin core 3 is in the first position, the push-pull electromagnet 42 can be directly powered by the controller to keep the pin core 3 in the first position. When unlocking is required, the push-pull electromagnet 42 is de-powered by turning off the start / stop switch, so that the pin core 3 is in the second position.

[0068] In this embodiment, the push-pull electromagnet 42 includes a push rod, a base, a coil, and a spring 41. The coil is mounted on the base, the push rod passes through the coil, and a limiting ring is provided at the rear end of the push rod. The spring 41 abuts between the base and the limiting ring. When the coil of the push-pull electromagnet 42 is energized, the push rod moves forward against the elastic force of the spring 41. When the coil of the push-pull electromagnet 42 is de-energized, the push rod returns to its original position under the elastic force of the spring 41. The push-pull electromagnet 42 is prior art and will not be described in detail in this embodiment.

[0069] In this embodiment, the controller may be a PLC, but is not limited to this.

[0070] Example 3: This example is basically the same as Example 1 or Example 2, except that, specifically, as follows: Figure 5 As shown, the connecting shaft 21 is a threaded shaft structure;

[0071] The rear end of the pin core 3 is provided with an internal threaded hole, which is threadedly connected to the connecting shaft 21;

[0072] The threaded connection is suitable for adjusting the extension length of the pin core 3 relative to the pin sleeve 1 by the relative rotation of the connecting shaft 21 and the pin core 3.

[0073] Specifically, such as Figure 5 As shown, the gate anti-fall bolt device also includes a locking nut 51, which is threaded onto the connecting shaft 21;

[0074] The locking nut 51 is adapted to be tightened to abut the rear end of the pin core 3 after the extension length of the pin core 3 relative to the pin sleeve 1 is adjusted, so as to lock the relative position of the pin core 3 and the connecting shaft 21.

[0075] In this embodiment, as Figure 5 As shown, the connecting shaft 21 is screwed into the internal threaded hole of the pin core 3. By rotating the connecting shaft 21, the connecting shaft 21 and the pin core 3 will generate relative helical motion, thereby changing the axial position of the pin core 3 in the pin sleeve 1 and realizing the adjustment of the extension length of the pin core 3.

[0076] The locking nut 51 is a hexagonal nut structure, threaded onto the connecting shaft 21, located behind the pin core 3. After the extension length of the pin core 3 is adjusted to the correct position, the connecting shaft 21 is controlled to extend out of the pin sleeve 1, allowing the locking nut 51 to be rotated with a wrench. This causes the locking nut 51 to move forward along the connecting shaft 21 until its front end face tightly abuts against the rear end face of the pin core 3, generating axial clamping force to prevent relative rotation between the connecting shaft 21 and the pin core 3, thereby locking the adjusted position of the pin core 3.

[0077] Example 4: This example is basically the same as Example 1 or Example 2, except that, specifically, as follows... Figure 6 As shown, the front end of the pin core 3 has a tapered structure.

[0078] In this embodiment, as Figure 6 As shown, the front end of the pin core 3 is machined into a tapered structure with a rounded cone angle, and the tip of the cone faces the outlet direction of the pin sleeve 1. The bottom of the tapered structure smoothly transitions to the cylindrical main body of the pin core 3. When the pin core 3 extends out of the pin sleeve 1, the tapered front end first contacts the edge of the corresponding locking hole, and the tapered surface forms a beveled contact with the edge of the hole. As the pin core 3 continues to advance, the tapered structure guides the pin core 3 to align and enter the locking hole.

[0079] Example 5: This example is basically the same as Example 1, except that, as Figure 7 As shown, the pin sleeve 1 includes:

[0080] Guide sleeve body 12, the guide sleeve body 12 is a hollow cylindrical structure;

[0081] Guide sleeve 13, which is a cylindrical structure, is embedded and fixed at the outlet end of guide sleeve body 12. The circular inner hole of guide sleeve 13 forms guide channel 11.

[0082] Specifically, such as Figure 7 As shown, the gate anti-fall pin device also includes a dustproof bushing 14, which is disposed between the guide sleeve 13 and the guide sleeve body 12.

[0083] In this embodiment, as Figure 7 As shown, the guide sleeve body 12 is a hollow cylindrical structure with a square cross-section, forming an internal receiving chamber. The guide sleeve 13 is a cylindrical structure, and its outer diameter matches the inner diameter of the mounting hole in the guide sleeve body 12. The dustproof bushing 14 is made of rubber or polyurethane material. The dustproof bushing 14 fills the space between the guide sleeve 13 and the guide sleeve body 12, forming a sealing lip to prevent external dust and impurities from entering.

[0084] Example 6: This example is basically the same as Example 1, except that, specifically, as follows... Figure 8As shown, the drive mechanism includes:

[0085] A guide fixing mechanism 22 is installed inside the pin sleeve 1, and a guide groove is provided on the guide fixing mechanism 22.

[0086] A rotary drive source is installed inside the guide fixing mechanism 22, and the rotary drive source is provided with a rotary output shaft.

[0087] Gear, the gear is connected to the rotary output shaft of the rotary drive source;

[0088] The rack is slidably disposed in the guide groove of the guide fixing mechanism 22, and the rack meshes with the gear;

[0089] The connecting shaft 21 is fixedly connected to the rack, and the rotary drive source is adapted to convert the rotary motion into the linear extension and retraction motion of the connecting shaft 21 through the meshing of the gear and the rack.

[0090] In this embodiment, the rotation drive source is a motor. When the motor drives the gear to rotate, the gear drives the rack meshing with it to move linearly along the guide groove, thereby driving the connecting shaft 21 to perform linear extension and retraction.

[0091] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gate anti-fall bolt device, characterized in that, include: The pin sleeve (1) is a hollow structure and has a guide channel (11) inside. Drive mechanism (2), the drive mechanism (2) is disposed on the pin sleeve (1), and the drive mechanism (2) is provided with a connecting shaft (21) suitable for telescopic movement. A pin core (3) is slidably disposed in the guide channel (11) of the pin sleeve (1). The connecting shaft (21) of the drive mechanism (2) is adapted to actuate the pin core (3). The pin core (3) is adapted to extend to the first working position under the drive of the drive mechanism (2) to insert into the hole corresponding to the door or retract into the pin sleeve (1) and move to the second working position to disengage from the hole corresponding to the door.

2. The gate anti-fall bolt device according to claim 1, characterized in that: The drive mechanism (2) is adapted to operate when energized; It also includes a power-off operating mechanism, which is adapted to be actuated when the drive mechanism (2) is de-energized and cannot work, so as to actuate the pin core (3) to extend or retract into the pin sleeve (1).

3. The gate anti-fall bolt device according to claim 2, characterized in that: The power-off operating mechanism includes: The push-pull electromagnet (42) includes a push rod. The rear end of the push rod is connected to the drive mechanism (2), and the front end of the push rod is connected to the pin core (3). When the drive mechanism is de-energized and cannot work, the push-pull electromagnet (42) is energized to extend the push rod, thereby driving the pin core (3) to extend. The push-pull electromagnet (42) is de-energized to retract the push rod, thereby driving the pin core (3) to retract.

4. The gate anti-fall bolt device according to claim 3, characterized in that: It also includes a power failure switching control device, which includes: A current sensor connected to the drive mechanism to detect whether the drive mechanism is energized; A position switch is installed on the pin sleeve (1) to detect whether the pin core (3) is in the first position; Start / stop switch; The controller is connected to the output terminals of the current sensor, the position switch, and the start / stop switch respectively. The controller is also connected to the push-pull electromagnet (42) for control. The controller is adapted to control the gain and loss of power of the push-pull electromagnet (42) according to the signals fed back by the current sensor, the position switch and the start / stop switch.

5. The gate anti-fall bolt device according to claim 1, characterized in that: The connecting shaft (21) is a threaded shaft structure; The rear end of the pin core (3) is provided with an internal thread hole, which is threadedly connected to the connecting shaft (21); The threaded connection is adapted to adjust the extension length of the pin core (3) relative to the pin sleeve (1) by means of the relative rotation of the connecting shaft (21) and the pin core (3).

6. The gate anti-fall bolt device according to claim 5, characterized in that: It also includes a locking nut (51) which is threaded onto the connecting shaft (21); The locking nut (51) is adapted to be tightened to abut the rear end of the pin core (3) after the extension length of the pin core (3) relative to the pin sleeve (1) has been adjusted, so as to lock the relative position of the pin core (3) and the connecting shaft (21).

7. The gate anti-fall bolt device according to claim 1, characterized in that: The drive mechanism includes: A guide fixing mechanism (22) is installed inside the pin sleeve (1), and a guide groove is provided on the guide fixing mechanism (22); A rotary drive source is installed in the guide fixing mechanism (22), and the rotary drive source is provided with a rotary output shaft; A gear, which is connected to the rotary output shaft of the rotary drive source; A rack, which is slidably disposed in the guide groove of the guide fixing mechanism (22), and the rack meshes with the gear; The connecting shaft (21) is fixedly connected to the rack, and the rotary drive source is adapted to convert the rotary motion into the linear extension and retraction motion of the connecting shaft (21) through the meshing of the gear and the rack.

8. The gate anti-fall bolt device according to claim 1, characterized in that: The front end of the pin core (3) has a tapered structure.

9. The gate anti-fall bolt device according to claim 1, characterized in that: The pin sleeve (1) includes: Guide sleeve body (12), wherein the guide sleeve body (12) is a hollow cylindrical structure; The guide sleeve (13) is a cylindrical structure that is embedded and fixed at the outlet end of the guide sleeve body (12). The circular inner hole of the guide sleeve (13) forms the guide channel (11).

10. The gate anti-fall bolt device according to claim 9, characterized in that: It also includes a dustproof bushing (14), which is disposed between the guide sleeve (13) and the guide sleeve body (12).

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