Unlocking device

Abstract

The utility model discloses an unlocking device. The unlocking device comprises a driving shaft, a transmission shaft, a transmission end cover, a floating nut, a sliding shaft and an unlocking main frame, wherein an unlocking hole matched with an unlocking rod of equipment to be unlocked in shape is formed in the lower end of the transmission shaft; the driving shaft and the transmission shaft are arranged on the transmission end cover; the transmission shaft is in threaded connection with a thread on the inner surface of the floating nut through a thread on the outer surface, the two ends of the sliding shaft are arranged on the transmission end cover and the unlocking main frame respectively, the floating nut is arranged on the sliding shaft in a sliding mode, and the unlocking main frame is installed on equipment to be unlocked; and the transmission shaft rotates under the action of rotating force provided by the driving shaft, axially advances relative to the floating nut, and drives the unlocking rod to unlock the equipment to be unlocked when the unlocking hole is matched with the unlocking rod. According to the scheme, the electric lifting foot margin can be unlocked under the condition that the electric lifting foot margin breaks down, and then potential safety hazards are avoided.

Description

Technical Field

[0001] This specification relates to the field of mechanical equipment technology, and in particular to an unlocking device. Background Technology

[0002] Electric lifting feet, as a type of support device, typically consist of a support rod and a motor. They are mainly used to convert the rotational motion of the motor into the linear reciprocating motion of the support rod, thereby supporting objects to lift off the ground or make contact with the ground through the extension and retraction of the support rod.

[0003] However, in actual use, the motor of the electric lifting platform often fails due to internal or external factors. At this time, the electric lifting platform will lose its original function. It is necessary to use external tools such as wrenches to unlock the unlocking lever of the electric lifting platform. However, due to the obstruction of the object supported by the electric lifting platform (such as the shell, components, structural parts, etc.), there is not enough space for the external tools to move to unlock it. As a result, the supported object cannot be lifted off the ground or make contact with the ground in time. In some special scenarios, this may even bring serious safety hazards.

[0004] Therefore, how to effectively unlock the electric lifting feet in case of malfunction, thereby avoiding potential safety hazards, is an urgent problem to be solved. Utility Model Content

[0005] This specification provides an unlocking device to partially solve the aforementioned problems existing in the prior art.

[0006] The following technical solution is adopted in this specification:

[0007] This specification provides an unlocking device, which includes: a drive shaft 1, a transmission shaft 2, a transmission end cover 3, a floating nut 4, a sliding shaft 5, and an unlocking main frame 6. The lower end of the transmission shaft 2 is provided with an unlocking hole that matches the shape of the unlocking rod of the device to be unlocked.

[0008] The drive shaft 1 and the transmission shaft 2 are mounted on the transmission end cover 3, and the drive shaft 1 and the transmission shaft 2 are located on different axes. The distance between the drive shaft 1 and the obstacle is greater than the distance between the unlocking rod and the obstacle.

[0009] The drive shaft 2 is threadedly connected to the inner surface of the floating nut 4 via the thread on its outer surface. The two ends of the sliding shaft 5 are respectively disposed on the drive end cover 3 and the unlocking main frame 6. The floating nut 4 is slidably disposed on the sliding shaft 5. The unlocking main frame 6 is installed on the device to be unlocked.

[0010] The drive shaft 2 rotates under the rotational force provided by the drive shaft 1 and moves axially forward relative to the floating nut 4. When the unlocking hole matches the unlocking rod, it drives the unlocking rod to unlock the device to be unlocked.

[0011] Optionally, the unlocking device is further provided with a compression spring 7, the two ends of which are in contact with the transmission end cover 3 and the floating nut 4 respectively, and the floating nut 4 is compressed at the bottom of the unlocking main frame 6 under the elastic force of the compression spring 7.

[0012] Optionally, the compression spring 7 is sleeved on the sliding shaft 5.

[0013] Optionally, the upper surface of the floating nut 4 is provided with a sleeve area, the height of the sleeve area is lower than the non-sleeve area of ​​the floating nut 4, and the width of the sleeve area is greater than the diameter of the compression spring 7;

[0014] The sleeve area is provided with mounting holes, and the floating nut 4 is mounted on the sliding shaft 5 through the mounting holes.

[0015] Optionally, the unlocking device is further provided with: an unlocking pinion 8 and an unlocking gear 9, wherein the unlocking pinion 8 and the unlocking gear 9 are meshed together;

[0016] The unlocking pinion 8 is mounted on the drive shaft 1, and the unlocking gear 9 is mounted on the transmission shaft 2.

[0017] Optionally, the unlocking device is provided with a plurality of shaft retaining rings 11;

[0018] The unlocking pinion 8 is mounted on the drive shaft 1 via a shaft retaining ring 11, and the unlocking gear 9 is mounted on the transmission shaft 2 via a shaft retaining ring 11.

[0019] Optionally, the transmission end cover 3 is provided with a plurality of fixing screws 10;

[0020] The transmission end cover 3 is fixed to the unlocking main frame by the fixing screw 10.

[0021] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects:

[0022] The unlocking device provided in this manual includes: a drive shaft, a transmission shaft, a transmission end cover, a floating nut, a sliding shaft, and an unlocking main frame. The lower end of the transmission shaft is provided with an unlocking hole that matches the shape of the unlocking rod of the device to be unlocked. The drive shaft and the transmission shaft are mounted on the transmission end cover. The transmission shaft is threadedly connected to the inner surface of the floating nut via threads on its outer surface. The two ends of the sliding shaft are respectively mounted on the transmission end cover and the unlocking main frame. The floating nut is slidably mounted on the sliding shaft. The unlocking main frame is mounted on the device to be unlocked. The transmission shaft rotates under the rotational force provided by the drive shaft and advances axially relative to the floating nut. When the unlocking hole matches the unlocking rod, it drives the unlocking rod to unlock the device to be unlocked.

[0023] As can be seen from the above method, since the drive shaft and transmission shaft in this solution are located on different axes, the distance between the drive shaft and the obstacle is greater than the distance between the unlocking rod and the obstacle. In this way, the obstacle can be effectively avoided from obstructing the operating space of the unlocking rod, thus providing sufficient moving space for external tools to apply rotational force to the drive shaft. Under the action of rotational force, the drive shaft moves axially and unlocks the device to be unlocked when the drive shaft is aligned with the unlocking rod. This enables unlocking of the device to be unlocked in the event of a malfunction, thereby avoiding the occurrence of safety hazards. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is an exploded view of an unlocking device provided in this specification;

[0026] Figure 2 This is a schematic diagram of an electrically operated lifting foot provided in this manual;

[0027] Figure 3 This is a schematic diagram of the assembly structure of an unlocking device provided in this specification;

[0028] Figure 4 This is a cross-sectional view of an unlocking device provided in this specification. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this specification.

[0030] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0031] Figure 1 This is an exploded view of an unlocking device provided in this specification. The unlocking device includes: a drive shaft 1, a transmission shaft 2, a transmission end cover 3, a floating nut 4, at least two sliding shafts 5, and an unlocking main frame 6.

[0032] The lower end of the drive shaft 2 is provided with an unlocking hole that matches the shape of the unlocking rod of the device to be unlocked. The outline of the unlocking rod and the shape of the unlocking hole can be hexagonal, pentagonal, star-shaped or other complex shapes. This manual does not make specific limitations on this.

[0033] In this manual, the device to be unlocked can be an electrically operated lifting foot, such as... Figure 2 As shown.

[0034] Figure 2 This is a schematic diagram of an electrically operated lifting foot provided in this manual.

[0035] The electric lifting foot is equipped with a motor, a retractable support rod, and an unlocking rod. The support rod can extend and retract under the drive of the motor. In the event of motor failure, the support rod can be controlled by applying positive and negative rotational forces to the unlocking rod. For example, the support rod retracts when the unlocking rod is rotated counterclockwise, and extends when the unlocking rod is rotated clockwise.

[0036] In practical applications, electric lifting feet can be used to support supports such as equipment chassis. Taking the equipment chassis as an example, the electric lifting feet can be set below the equipment chassis. The equipment chassis can have several exposed holes, which provide unlocking space for the unlocking rod of the electric lifting feet and installation space for the mounting holes of the electric lifting feet.

[0037] When the electric lifting foot malfunctions, the unlocking main frame 6 can be installed on the mounting hole of the electric lifting foot through the exposed hole. At this time, the unlocking rod of the electric lifting foot will also be exposed on the chassis of the equipment through the exposed hole.

[0038] Of course, in practical applications, the device to be unlocked can also be other devices that can be unlocked by an unlocking rod of a specified shape (such as a telescopic rod), and this manual does not make specific limitations on this.

[0039] Drive shaft 1 and transmission shaft 2 are mounted on transmission end cover 3, and drive shaft 1 and transmission shaft 2 are located on different axes. The distance between drive shaft 1 and the obstacle is greater than the distance between unlocking rod and the obstacle. In this way, since the distance between drive shaft 1 and the obstacle is greater than the distance between unlocking rod and the obstacle, the obstruction of the obstacle can be effectively avoided, thereby providing sufficient movement space for external tools to apply rotational force to the drive shaft and then operate the unlocking device to unlock the electric delivery.

[0040] In practical applications, the aforementioned obstacles can be mechanical components, electronic components, or other objects mounted on supports. The unlocking tools can be tools that can provide rotational force, such as wrenches, screwdrivers, or pliers; of course, they can also be tools driven by motors.

[0041] Both the outer surface of the drive shaft and the inner surface of the floating nut are provided with threaded areas, so that the drive shaft 2 is threadedly connected to the inner surface of the floating nut 4 through the thread on the outer surface.

[0042] In this specification, the unlocking device is also provided with: a small unlocking gear 8 and a large unlocking gear 9, which mesh with each other. When an external rotational force is applied to the drive shaft 1, the rotational force can be transmitted to the drive shaft 2 based on the meshing action between the small unlocking gear 8 and the large unlocking gear 9, causing it to rotate.

[0043] Of course, in practical applications, the drive shaft 1 and the transmission shaft 2 can also transmit rotational force through other means such as linkage structure or hinge structure, and this specification does not make specific limitations on this.

[0044] The two ends of the sliding shaft 5 are respectively set on the transmission end cover 3 and the unlocking main frame 6. The floating nut 4 is slidably set on the sliding shaft 5, and the floating nut 4 cannot rotate under the restriction of the sliding rod.

[0045] Unlock the main frame 6 and install it on the device to be unlocked.

[0046] The drive shaft 2 rotates under the rotational force provided by the drive shaft 1 and moves axially forward relative to the floating nut 4. When the unlocking hole matches the unlocking rod, it drives the unlocking rod to unlock the device to be unlocked.

[0047] The aforementioned positive rotational force can be the rotational force generated when the drive shaft 1 is rotated clockwise. At this time, under the action of the positive helical force, the transmission shaft 2 moves axially toward the direction of the floating nut 4 towards the unlocking rod.

[0048] Furthermore, this specification also provides a schematic diagram of the assembly structure of the unlocking device, such as... Figure 3 As shown.

[0049] Figure 3 This is a schematic diagram of the assembly structure of an unlocking device provided in this specification.

[0050] from Figure 3 As can be seen, since the drive shaft 2 and the floating nut 4 are connected by threads, when the drive shaft 2 rotates under the positive rotational force provided by the drive shaft 1, a positive helical force will be generated between the drive shaft 2 and the floating nut 4 of the device to be unlocked. At this time, under the action of the positive helical force, the drive shaft 2 moves forward axially and rotates relative to the floating nut 4 until the unlocking hole matches the unlocking rod, driving the unlocking hole to rotate in order to unlock the device to be unlocked.

[0051] In practical applications, the application of external rotational force and the position of external tools can be further adjusted by changing the length and direction of the drive shaft 1 extending from the unlocking pinion 8. Figure 3 As shown, the end of the drive shaft 1 is located below the unlocking tool, so a rotational force can be applied to the end of the unlocking device using an external tool.

[0052] Alternatively, when installing the unlocking tool, the direction of the drive shaft 1 can be reversed so that its end is above the unlocking device, thereby unlocking it by applying rotational force above it. During this process, the position of the extended unlocking pinion 8 can be adjusted to further adjust the unlocking position.

[0053] In one embodiment provided in this specification, the unlocking device may also be provided with a compression spring 7, the two ends of which are in contact with the transmission end cover 3 and the floating nut 4 respectively, and the floating nut 4 is compressed at the bottom of the unlocking main frame 6 under the elastic force of the compression spring 7.

[0054] Under the action of helical force, the drive shaft 2 moves axially forward and rotates relative to the floating nut 4. If the unlocking hole and the unlocking rod do not align when they come into contact, the drive shaft 1 will continue to drive the drive shaft 2 to rotate under the action of continuous external rotational force, thereby generating a reverse helical force between the drive shaft 2 and the floating nut 4. At this time, the floating nut 4 will move axially backward relative to the drive shaft 2 under the action of the reverse helical force, thereby compressing the compression spring 7.

[0055] When the unlocking hole aligns with the unlocking rod, the floating nut 4, under the pressure of the compression spring 7, drives the transmission shaft 2 axially forward, allowing the unlocking hole on the transmission shaft 2 to engage with the unlocking rod. This unlocks the rod. For ease of understanding, this specification also provides a cross-sectional view of the unlocking device, as shown below. Figure 4 As shown.

[0056] Figure 4 This is a cross-sectional view of an unlocking device provided in this specification.

[0057] As can be seen from the cross-sectional view, the floating nut 4 and the drive shaft 2 are connected by threads. When there is no external force, there is no relative axial movement, and they can be regarded as a whole. In the initial state, the floating nut 4 is always at the bottom of the unlocking main frame 6 under the action of the compression spring 7. When the gear rotates counterclockwise, the drive shaft 2 will move upward under the action of the threads. The hexagonal sleeve at the bottom of the drive shaft 2 will disengage from the hexagon at the top of the electric lifting foot, so as not to affect the electric drive of the electric lifting foot.

[0058] Assuming that the electric lifting foot cannot detach from the bottom edge after touching the ground due to mechanical or electrical control reasons, and manual removal is required, the clockwise drive shaft 1 moves the transmission shaft 2 downwards. When the hexagonal sleeve at the bottom of the transmission shaft 2 just contacts the hexagonal unlocking lever at the top of the electric lifting foot, if the angles of the two hexagons do not match, they cannot be inserted. The rotation of the transmission shaft 2 cannot drive the unlocking lever at the top of the electric lifting foot to rotate and unlock it, thus detaching it from the ground. At this point, simply continue rotating the gear. Assuming that after rotating 59°, the hexagonal sleeve at the bottom of the transmission shaft 2 can match the angle of the hexagonal unlocking lever at the top of the electric lifting foot. If the pitch of the floating nut 4 is 2mm, then after rotating 59°... Then, because the drive shaft 2 cannot move downwards (the end of the drive shaft 2 is blocked by the unlocking rod at the top of the electric lifting foot), the floating nut 4 will be lifted by 2*59° / 360°=0.3mm under the action of the thread rotation. At this time, the hexagonal sleeve at the bottom of the drive shaft 2 matches the hexagonal unlocking rod at the top of the electric lifting foot. Under the action of the compression spring 7, the floating nut 4 drives the drive shaft 2 to move downwards together and inserts into the hexagon at the top of the electric lifting foot by 0.3mm. Thus, it can drive the unlocking rod to rotate together to unlock and lift off the ground. As the gear continues to rotate, the hexagonal sleeve at the bottom of the drive shaft 2 and the hexagonal unlocking rod at the top of the electric lifting foot are embedded more and more until they are completely embedded.

[0059] During this process, the gap between the electric lifting foot and the ground increases. As the hexagonal sleeve at the bottom of the drive shaft 2 and the hexagonal unlocking rod at the top of the electric lifting foot become more and more embedded until they are fully embedded, the drive shaft 1 continues to rotate. Since the drive shaft 2 can no longer descend, the floating nut 4 will move upward under the action of the thread and compress the compression spring 7 until the floating nut 4 hits the bottom surface of the drive end cover 3. During this process, the gap between the electric lifting foot and the ground continues to increase and the foot will detach from the ground.

[0060] In addition, in practical applications, the floating nut can also be compressed at the bottom of the unlocking main frame 6 in the initial state by other means such as electromagnetic force (such as the attraction between it and the unlocking main frame 6 or the repulsion between it and the transmission end cover 3), traction force v, etc.

[0061] Additionally, the compression spring 7 can be sleeved on the sliding shaft 5. For example... Figure 1 As shown, the upper surface of the floating nut 4 is provided with a sleeve area, the height of which is lower than the non-sleeve area of ​​the floating nut 4, and the width of which is greater than the diameter of the compression spring 7; the sleeve area is provided with a mounting hole, and the floating nut 4 is mounted on the sliding shaft 5 through the mounting hole.

[0062] The unlocking device can be equipped with several shaft retaining rings 11. The unlocking pinion 8 is mounted on the drive shaft 1 through the shaft retaining rings 11, and the unlocking gear 9 is mounted on the transmission shaft 2 through the shaft retaining rings 11.

[0063] The transmission end cover 3 can be provided with a number of fixing screws 10, and the transmission end cover 3 can be fixed to the unlocking main frame by fixing screws 10. Of course, it can also be fixed by other methods such as studs.

[0064] As can be seen from the above, since the drive shaft 1 and transmission shaft 2 in this solution are located on different axes, the distance between the drive shaft 1 and the obstacle is greater than the distance between the unlocking rod and the obstacle. In this way, the obstacle can be effectively avoided from obstructing the operating space of the unlocking rod, thus providing sufficient moving space for external tools to apply rotational force to the drive shaft. Under the action of rotational force, the drive shaft moves axially and unlocks the device to be unlocked when the drive shaft is aligned with the unlocking rod. This enables unlocking even if the electric lifting foot fails, thereby avoiding safety hazards.

[0065] In addition, due to the connection and transmission relationship between the floating nut, the compression spring and the drive shaft, even if the unlocking hole of the drive shaft does not match the unlocking rod at the first moment, the direction of the unlocking hole can still be adjusted by continuing to rotate the drive shaft. When the unlocking hole is aligned with the unlocking rod, the elastic force of the compressed spring will push the drive shaft downward so that its unlocking hole fits into the unlocking rod, thereby unlocking the device to be unlocked.

[0066] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0067] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0068] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this specification.

Claims

1. An unlocking device, characterized in that, The unlocking device includes: a drive shaft (1), a transmission shaft (2), a transmission end cover (3), a floating nut (4), a sliding shaft (5), and an unlocking main frame (6). The lower end of the transmission shaft (2) is provided with an unlocking hole that matches the shape of the unlocking rod of the device to be unlocked. The drive shaft (1) and the transmission shaft (2) are mounted on the transmission end cover (3), and the drive shaft (1) and the transmission shaft (2) are located on different axes. The distance between the drive shaft (1) and the obstacle is greater than the distance between the unlocking rod and the obstacle. The drive shaft (2) is threadedly connected to the inner surface of the floating nut (4) through the thread on the outer surface. The two ends of the sliding shaft (5) are respectively set on the drive end cover (3) and the unlocking main frame (6). The floating nut (4) is slidably set on the sliding shaft (5). The unlocking main frame (6) is installed on the device to be unlocked. The drive shaft (2) rotates under the rotational force provided by the drive shaft (1) and moves axially forward relative to the floating nut (4). When the unlocking hole matches the unlocking rod, it drives the unlocking rod to unlock the device to be unlocked.

2. The unlocking device as described in claim 1, characterized in that, The unlocking device is also provided with a compression spring (7), the two ends of which are in contact with the transmission end cover (3) and the floating nut (4) respectively. The floating nut (4) is compressed at the bottom of the unlocking main frame (6) under the elastic force of the compression spring (7).

3. The unlocking device as described in claim 2, characterized in that, The compression spring (7) is sleeved on the sliding shaft (5).

4. The unlocking device as described in claim 3, characterized in that, The upper surface of the floating nut (4) is provided with a sleeve area, the height of the sleeve area is lower than the non-sleeve area of ​​the floating nut (4), and the width of the sleeve area is greater than the diameter of the compression spring (7). The socket area is provided with mounting holes, and the floating nut (4) is mounted on the sliding shaft (5) through the mounting holes.

5. The unlocking device as described in claim 1, characterized in that, The unlocking device is further provided with: an unlocking pinion (8) and an unlocking gear (9), wherein the unlocking pinion (8) and the unlocking gear mesh with each other; The unlocking pinion (8) is mounted on the drive shaft (1), and the unlocking gear (9) is mounted on the transmission shaft (2).

6. The unlocking device as described in claim 5, characterized in that, The unlocking device is provided with a plurality of shaft retaining rings (11); The unlocking pinion (8) is mounted on the drive shaft (1) via a shaft retaining ring (11), and the unlocking gear (9) is mounted on the transmission shaft (2) via a shaft retaining ring (11).

7. The unlocking device as described in claim 1, characterized in that, The transmission end cover (3) is provided with a number of fixing screws (10); The transmission end cap (3) is fixed to the unlocking main frame by the fixing screw (10).

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