Lead screw transmission anti-falling mechanism

Abstract

A lead screw transmission anti-falling mechanism is characterized in that a driving device is used for providing power, a transmission lead screw is fixedly inserted into the driving device and used for driving the transmission lead screw to rotate, an anti-falling mechanism body is arranged outside the transmission lead screw and comprises a transmission copper nut and an anti-falling nut, and the transmission copper nut and the anti-falling nut are arranged outside the transmission lead screw in a sleeving mode; the transmission copper nut is arranged at the top of the anti-falling nut, the transmission copper nut is sleeved with a nut seat, a fixing plate is arranged on one side of the nut seat, anti-falling nut limiting blocks extend out of the left side and the right side of the interior of the side, close to the fixing plate, of the nut seat, and the anti-falling nut limiting blocks are used for enabling the anti-falling nut to be in a relatively free state and not to participate in transmission loads. According to the design, when the transmission copper nut fails, the anti-falling mode can be automatically switched, the anti-falling nut is meshed with the threaded structure of the transmission lead screw, a load is rapidly locked, the load is prevented from falling, and therefore the safety and reliability of the whole system are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screw rod drive anti-falling mechanism and belongs to the mechanical engineering field. BACKGROUND

[0002] In the field of industrial buildings, vertical moving mechanisms are widely used in various occasions. These devices usually rely on the cooperation of screw rods and nuts to achieve precise vertical movement. In traditional vertical moving mechanisms, drive nuts are usually made of copper material and are widely used due to their self-locking characteristics. This self-locking characteristic can maintain a constant load without external power.

[0003] However, as the use time increases, copper nuts may lose their self-locking ability due to wear, tooth breakage, cracking, and other reasons, which may cause the nut seat to accidentally fall, causing safety hazards and even equipment damage. To solve this problem, existing technologies usually require regular inspection and replacement of worn copper nuts, which not only increases maintenance costs but also may cause safety accidents due to untimely maintenance. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model aims to provide a screw rod drive anti-falling mechanism to solve the problem of existing drive copper nuts that need regular inspection and replacement of worn copper nuts, which not only increases maintenance costs but also may cause safety accidents due to untimely maintenance.

[0005] To achieve the above-mentioned purpose, the utility model is implemented by the following technical scheme: a screw rod drive anti-falling mechanism, comprising:

[0006] a drive device for providing power;

[0007] a drive screw rod fixedly inserted into the interior of the drive device for driving the drive screw rod to rotate;

[0008] an anti-falling mechanism provided outside the drive screw rod,

[0009] wherein the anti-falling mechanism includes a drive copper nut and an anti-falling nut, both of which are sleeved outside the drive screw rod, the drive copper nut is provided on the top of the anti-falling nut, the drive copper nut is externally sleeved with a nut seat, one side of the nut seat is provided with a fixed plate, and the nut seat extends out anti-falling nut limit blocks on both sides inside near the fixed plate.

[0010] Further, the anti-falling nut limit blocks are fixedly connected to the outer side of the anti-falling nut to ensure that the anti-falling nut limit blocks are always in the effective position during the entire working process and can take over the load in emergency situations.

[0011] Further, the transmission copper nut and the anti-falling nut are in threaded engagement with the transmission screw rod, so as to realize relative movement of the transmission copper nut and the anti-falling nut along the transmission screw rod.

[0012] Further, the transmission copper nut is internally provided with a first threaded structure, and the anti-falling nut is internally provided with a second threaded structure, and the first threaded structure and the second threaded structure are identical in structure.

[0013] Further, the transmission screw rod is provided with a threaded structure, so that, under normal working conditions, the transmission copper nut moves up and down along the threaded structure, and the anti-falling nut keeps a relative distance from the transmission copper nut and moves following the transmission copper nut under the action of the anti-falling nut limiting block and the transmission screw rod, and when an accident occurs, the anti-falling nut cooperates with the transmission screw rod to prevent the load from falling.

[0014] Further, the transmission copper nut and the nut seat are fixedly connected through screws and are provided with a plurality of recesses of uniform size.

[0015] Further, the length of the anti-falling nut limiting block is greater than the length of the nut seat, so as to ensure that, when the transmission copper nut fails, the anti-falling nut can effectively limit the downward sliding of the transmission copper nut and provide additional support force, thereby preventing the load from falling unexpectedly.

[0016] Further, the anti-falling mechanism is suitable for mechanical equipment that needs to move vertically and is used for preventing equipment damage and safety accidents caused by wear of transmission components.

[0017] The anti-falling mechanism has the following beneficial effects:

[0018] Under normal working conditions, the driving device provides power to make the transmission screw rod rotate, and when the transmission screw rod rotates, the transmission copper nut moves up and down along the screw rod due to the engagement movement between the threads, thereby driving the nut seat and the load to move vertically, and in this process, the anti-falling nut keeps a relative distance from the transmission copper nut and moves following the transmission copper nut under the action of the anti-falling nut limiting block and the transmission screw rod, so the anti-falling nut does not bear the load, but keeps relative static or synchronous movement with the transmission screw rod, and when the threaded structure of the transmission copper nut fails due to wear or damage, the load and the transmission copper nut will start to fall due to gravity, at this time, the anti-falling nut will support the nut seat under force, thereby preventing the load from falling, so as to realize the anti-falling function, and the design of the anti-falling mechanism utilizes the engagement between the threaded structures to enable the anti-falling nut to quickly respond and switch to the anti-falling mode when the transmission copper nut fails, thereby improving the safety and reliability of the entire system. BRIEF DESCRIPTION OF DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings.

[0020] Figure 1 A structure schematic view of the anti-falling mechanism of the utility model,

[0021] Figure 2 A structure schematic view of the anti-falling mechanism of the utility model, Figure 1 A-A section schematic view of the utility model,

[0022] Figure 3 A section schematic view of the anti-falling mechanism.

[0023] The figure marks are respectively: 1, driving device; 2, transmission screw rod; 3, anti-falling mechanism; 301, transmission copper nut; 302, anti-falling nut; 303, nut seat; 304, anti-falling nut limiting block; 305, screw. DETAILED DESCRIPTION

[0024] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific implementation manners.

[0025] Figure 1 A structure schematic view of the anti-falling mechanism of the utility model, Figure 2 A structure schematic view of the anti-falling mechanism of the utility model, Figure 1 A-A section schematic view of the utility model, Figure 3 A section schematic view of the anti-falling mechanism.

[0026] As shown in Figure 1 , Figure 2 and Figure 3 , the utility model provides an anti-falling mechanism of screw rod transmission technical scheme, which comprises:

[0027] Driving device 1, the driving device 1 is used to provide power;

[0028] Transmission screw rod 2, the transmission screw rod 2 is fixedly inserted in the inside of the driving device 1 and is used to drive the transmission screw rod 2 to rotate;

[0029] Anti-falling mechanism 3, the transmission screw rod 2 is externally provided with the anti-falling mechanism 3,

[0030] Wherein, the anti-falling mechanism 3 comprises transmission copper nut 301 and anti-falling nut 302, the transmission copper nut 301 and the anti-falling nut 302 are both externally sleeved on the transmission screw rod 2, the transmission copper nut 301 is arranged at the top of the anti-falling nut 302, the transmission copper nut 301 is externally sleeved with nut seat 303, one side of the nut seat 303 is provided with fixed plate, and the nut seat 303 extends anti-falling nut limiting block 304 on the inside of the side close to the fixed plate and left and right sides.

[0031] In order to prevent the load from falling unexpectedly, the anti-falling nut limiting block 304 is fixedly connected to the outside of the anti-falling nut 302, so as to ensure that the anti-falling nut limiting block 304 is always in an effective position during the entire working process and can take over the load in an emergency.

[0032] In order to realize accurate control of the load, the transmission copper nut 301 and the anti-falling nut 302 are both in threaded engagement with the transmission screw rod 2, so as to realize relative movement of the transmission copper nut 301 and the anti-falling nut 302 along the transmission screw rod 2.

[0033] In order to provide double protection, the inside of the transmission copper nut 301 is provided with a first threaded structure, and the inside of the anti-falling nut 302 is provided with a second threaded structure, and the first threaded structure and the second threaded structure are the same in structure.

[0034] In order to ensure the stability of the device, the transmission screw rod 2 is provided with a threaded structure, so that the transmission copper nut 301 moves up and down along the threaded structure under normal working conditions, and the anti-falling nut 302 makes a following movement at a relative distance from the transmission copper nut 301 under the action of the anti-falling nut limiting block 304 and the transmission screw rod 2, and in the event of an accident, the anti-falling nut 302 cooperates with the transmission screw rod 2 to prevent the load from falling.

[0035] In order to enhance the stability of the connection, a plurality of recesses of the same size are formed in the transmission copper nut 301 and the nut seat 303, and the transmission copper nut 301 and the nut seat 303 are fixedly connected by the screw 305.

[0036] In order to enhance the limiting effect, the length of the anti-falling nut limiting block 304 is greater than the length of the nut seat 303, so as to ensure that when the transmission copper nut 301 fails, the anti-falling nut 302 can effectively limit the downward sliding of the transmission copper nut 301 and provide additional support force, thereby preventing the load from falling unexpectedly.

[0037] In order to improve the scope of application, the anti-falling mechanism 3 is suitable for mechanical equipment that needs to move vertically, and is used to prevent equipment damage and safety accidents caused by wear of transmission parts.

[0038] Under normal working conditions, the driving device 1 provides power to make the transmission screw rod 2 rotate, and when the transmission screw rod 2 rotates, the transmission copper nut 301 moves up and down along the screw rod due to the engagement movement between the threads, thereby driving the nut seat 303 and its load to move vertically, and in this process, the anti-falling nut makes a following movement at a relative distance from the transmission copper nut 301 under the action of the anti-falling nut limiting block 304 and the transmission screw rod 2, so that the anti-falling nut 302 does not bear the load, but remains relatively static or moves synchronously with the transmission screw rod 2.

[0039] When the transmission copper nut 301 fails due to wear, damage or other reasons, the transmission copper nut 301 cannot be engaged with the threaded structure of the transmission screw 2 through the threaded structure of the transmission copper nut 301, and the position of the load cannot be maintained. In this case, due to the action of gravity, the load and the transmission copper nut 301 begin to fall, at which time the anti-falling nut 302 supports the nut seat under stress, thereby preventing the load from falling, thereby achieving the anti-falling function.

[0040] The design of the utility model can automatically switch to the anti-falling mode when the transmission copper nut 301 fails, the anti-falling nut 302 is engaged with the threaded structure of the transmission screw 2, the load is quickly locked, and the load is prevented from falling, thereby improving the safety and reliability of the entire system.

[0041] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0042] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A screw drive anti-fall mechanism, characterized by: It includes: A driving device (1), wherein the driving device (1) is used to provide power; A transmission screw (2), the transmission screw (2) being fixedly plugged into the interior of the driving device (1) and used for driving the transmission screw (2) to rotate; An anti-fall mechanism (3) is provided outside the transmission screw rod (2). The anti-fall mechanism (3) comprises a transmission copper nut (301) and an anti-fall nut (302), wherein the transmission copper nut (301) and the anti-fall nut (302) are both sleeved on the outside of the transmission screw rod (2), the transmission copper nut (301) is arranged on the top of the anti-fall nut (302), and a nut seat (303) is sleeved on the outside of the transmission copper nut (301), a fixing plate is provided on one side of the nut seat (303), and anti-fall nut limit blocks (304) extend from the left and right sides of the inside of the nut seat (303) on a side close to the fixing plate.

2. The screw drive anti-fall mechanism according to claim 1, characterized in that: The anti-fall nut limiting block (304) is fixedly connected to the outside of the anti-fall nut (302) and is used to ensure that the anti-fall nut limiting block (304) is always located in an effective position during the entire working process and can take over the load in an emergency.

3. The screw drive anti-fall mechanism according to claim 1, characterized in that: The transmission copper nut (301) and the anti-fall nut (302) are both threadedly engaged with the transmission screw (2) to achieve relative movement of the transmission copper nut (301) and the anti-fall nut (302) along the transmission screw (2).

4. The screw drive anti-fall mechanism according to claim 3, characterized in that: A first thread structure is provided on the inner side of the transmission copper nut (301), and a second thread structure is provided on the inner side of the anti-fall nut (302), wherein the first thread structure and the second thread structure have the same structure.

5. The screw drive anti-fall mechanism according to claim 4, characterized in that: The transmission screw (2) is provided with a thread structure for moving the transmission copper nut (301) up and down along the thread structure under normal working conditions. The anti-drop nut (302) maintains a relative distance from the transmission copper nut (301) and performs a following movement under the action of the anti-drop nut limit block (304) and the transmission screw (2). In the event of an accident, the anti-drop nut (302) cooperates with the transmission screw (2) to prevent the load from falling.

6. The screw drive anti-fall mechanism according to claim 1, characterized in that: The transmission copper nut (301) and the nut seat (303) are provided with a plurality of grooves of the same size. The transmission copper nut (301) and the nut seat (303) are fixedly connected by screws (305).

7. The screw drive anti-fall mechanism according to claim 1, characterized in that: The length of the anti-fall nut limit block (304) is greater than the length of the nut seat (303), and is used to ensure that when the transmission copper nut (301) fails, the anti-fall nut (302) can effectively limit the downward movement of the transmission copper nut (301) and provide additional supporting force, thereby preventing the load from accidentally falling.

8. The screw drive anti-fall mechanism according to any one of claims 1 to 7, characterized in that: The anti-fall mechanism (3) is suitable for mechanical equipment that needs to move vertically, and is used to prevent equipment damage and safety accidents caused by wear of transmission parts.

Images