Pushing device with self-locking mechanism
By introducing a self-locking mechanism into the jacking device, the axial pressure of the lead screw is distributed using the locking pin assembly, thus solving the problem of lead screw torque when the jacking support pressure is too high and improving the durability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 华晟(青岛)智能装备科技有限公司
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-26
AI Technical Summary
The existing jacking device lacks an effective limiting device when the jacking support pressure demand is too high, which causes the screw torque to damage the screw and motor.
A self-locking mechanism is adopted, in which the locking pin assembly is inserted into the limiting hole of the limiting chuck to distribute the axial pressure of the main sliding base, reduce the torque of the drive shaft, and use a pneumatic push rod to provide limiting support.
This reduces damage to the lead screw and motor, improving the overall lifespan and reliability of the equipment.
Smart Images
Figure CN224274742U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of jacking devices, and particularly relates to a jacking device with a self-locking mechanism. Background Technology
[0002] The jacking device is mainly used in the field of machining. It usually uses screw drive technology or hydraulic equipment to push and limit the machining parts, ensuring that the machining parts can be restricted to a designated area for other equipment to perform in-depth processing.
[0003] Currently, when ball screw devices are used as jacking devices, rails are typically used to restrict the reverse rotation of the ball slider. By preventing the ball slider from reversing, the device can maintain its jacking support effect. In actual use, the reverse rotation of the ball slider, under the limiting action of the guide rail, will also exert a force on the screw. Usually, the screw and rail will bear the reverse torque of the ball slider during the jacking process. When the jacking support pressure demand is too high, the torque borne by the screw will also be greater. Existing technologies lack effective limiting devices to reduce the damage caused by the screw torque to the screw and the motor adapted to the screw. Utility Model Content
[0004] This utility model provides a jacking device with a self-locking mechanism, which aims to solve the problem that the current lead screw structure lacks an effective limiting device to help reduce the damage caused by the lead screw torque to the lead screw and the motor adapted to the lead screw when the jacking support pressure demand is too large.
[0005] This utility model is implemented as follows: a pushing device with a self-locking mechanism, comprising:
[0006] The main sliding base includes a rectangular pusher and a drive cavity located at the center of the rectangular pusher.
[0007] A lead screw drive mechanism includes a drive shaft, a rolling slider, and a limiting chuck disposed on the drive shaft; the rolling slider is disposed on one side of a rectangular push frame, and the drive shaft is assembled and connected to the rolling slider and extends from the rolling slider into the drive cavity;
[0008] The locking pin assembly has several sets of limiting holes on the limiting chuck. After the lead screw transmission mechanism completes the movement of the main sliding base, the locking pin assembly is inserted into the limiting hole using an electro-hydraulic push rod or a pneumatic push rod. The diameter of the push rod of the locking pin assembly is adapted to the diameter of the limiting hole.
[0009] Preferably, the lead screw transmission mechanism further includes a first bearing seat and a second bearing seat, the second bearing seat being located outside the rectangular push frame, the first bearing seat being located inside the drive cavity, and the drive shaft being assembled with the first bearing seat and the second bearing seat.
[0010] Preferably, one end of the drive shaft extends out of the first bearing housing, and the limiting chuck is arranged on the portion of the drive shaft that extends out of the first bearing housing.
[0011] Preferably, the second bearing housing is further provided with a drive mechanism, and the portion of the drive shaft extending out of the second bearing housing is further provided with a synchronous pulley, and the drive mechanism is connected to the synchronous pulley via a synchronous belt.
[0012] Preferably, the end face of the rectangular pusher away from the locking pin assembly is a top-pushing surface, and a receiving groove is provided on the side of the rectangular pusher away from the top-pushing surface, and the rolling slider is assembled in the receiving groove.
[0013] Preferably, the rolling slider is engaged with the drive shaft.
[0014] Preferably, the main sliding base further includes a limiting guide rail and a limiting slider, the limiting slider being disposed on a rectangular push frame and sliding on the limiting guide rail.
[0015] Preferably, the limiting guide rail is arranged parallel to the drive shaft.
[0016] Compared with the prior art, the embodiments of this application have the following main advantages:
[0017] The jacking device with a self-locking mechanism provided by this utility model completes the limiting lock of the limiting chuck through the locking pin assembly. During the jacking support process, the limiting effect of the main sliding base is distributed by the locking pin assembly to the limiting chuck, reducing the damage of the axial pressure of the main sliding base to the drive shaft. When the jacking support pressure demand is too high, the torque on the lead screw increases. By distributing the torque through the locking pin assembly, the torque on the lead screw is prevented from easily causing great damage to the lead screw and the motor adapted to the lead screw, thereby improving the overall life of the equipment. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of a pusher device with a self-locking mechanism provided by this utility model.
[0019] Figure 2 This is a top view of the structure of a pusher device with a self-locking mechanism provided by this utility model.
[0020] Figure 3 This is a schematic diagram of the screw drive mechanism of a pusher device with a self-locking mechanism provided by this utility model.
[0021] Figure 4 This is a partial square diagram of the structure at point A in a jacking device with a self-locking mechanism provided by this utility model.
[0022] Figure 5This is a schematic diagram of the internal structure of a pusher device with a self-locking mechanism provided by this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] 100. Main sliding base; 110. Rectangular push frame; 120. Drive cavity; 130. Limiting guide rail; 140. Limiting slider;
[0025] 210. Drive shaft; 220. First bearing housing; 230. Second bearing housing; 240. Limit chuck; 250. Rolling slider; 260. Synchronous pulley;
[0026] 300. Locking pin assembly; 400. Drive mechanism. Detailed Implementation
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.
[0028] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0029] This utility model embodiment provides a pushing device with a self-locking mechanism, such as... Figures 1-5 As shown, the jacking device with a self-locking mechanism includes:
[0030] The main sliding base 100 includes a rectangular pusher 110, a limiting guide rail 130, a limiting slider 140, and a driving cavity 120 located at the center of the rectangular pusher 110. The limiting slider 140 is located on the rectangular pusher 110 and slides on the limiting guide rail 130. Here, the limiting guide rail 130 is arranged on the main body of the jacking device that needs to be equipped with a self-locking mechanism. The function of the limiting guide rail 130 is to limit the jacking movement direction of the main sliding base 100.
[0031] A ball screw drive mechanism includes a drive shaft 210, a first bearing seat 220, a second bearing seat 230, a rolling slider 250, and a limiting chuck 240 disposed on the drive shaft 210. The rolling slider 250 is disposed on one side of a rectangular push frame 110. The drive shaft 210 is assembled and connected to the rolling slider 250 and extends from the rolling slider 250 into a drive cavity 120. The second bearing seat 230 is located outside the rectangular push frame 110, and the first bearing seat 220 is located inside the drive cavity 120. The drive shaft 210 is assembled with the first bearing seat 220 and the second bearing seat 230. The assembly structure of the drive shaft 210 and the rolling slider 250 is the same as the assembly method between the ball screw and the nut in the prior art.
[0032] The locking pin assembly 300 is provided with several sets of limiting holes on the limiting chuck 240. After the lead screw transmission mechanism completes the movement of the main sliding base 100, the locking pin assembly 300 is inserted into the limiting hole. The locking pin assembly 300 adopts an electric hydraulic push rod or a pneumatic push rod.
[0033] The drive shaft 210 rotates under the action of the first bearing seat 220 and the second bearing seat 230, which is equivalent to a ball screw structure; the end face of the rectangular pusher 110 away from the locking pin assembly 300 is the pushing surface, and the side of the rectangular pusher 110 away from the pushing surface is provided with a receiving groove. The rolling slider 250 is assembled in the receiving groove. The drive shaft 210 and the rolling slider 250 are transmitted using the technical principle of a ball screw. Here, the rolling slider 250 and the receiving groove are fixedly connected.
[0034] In this embodiment, the main sliding base 100 mainly utilizes the ball screw principle of the drive shaft 210 and the rolling slider 250 to achieve displacement limiting, helping the main sliding base 100 to complete functions such as pushing and supporting. The locking pin assembly 300 can adopt the technical principle of existing pneumatic push rods or other types of push rods. The push rod diameter of the locking pin assembly 300 is adapted to the diameter of the limiting insertion hole. When the locking pin assembly 300 is inserted into the limiting insertion hole, the locking pin assembly 300 completes the limiting locking of the limiting chuck 240. During the pushing and supporting process, the axial torque of the drive shaft 210 in the main sliding base 100 during the limiting process is distributed by the locking pin assembly 300's locking action on the limiting chuck 240, reducing the impact of the axial pressure of the main sliding base 100 on the drive shaft 210. At the same time, the pneumatic push rod 300 is limited by the circumferential support force, so the pneumatic components of the pneumatic push rod 300 located in the radial direction are not easily damaged.
[0035] In a preferred embodiment of this invention, the limiting guide rail 130 is arranged parallel to the drive shaft 210 to ensure that the moving direction of the main sliding base 100 is consistent with the preset direction, thereby completing the jacking support operation and reducing the occurrence of offset.
[0036] In a preferred embodiment of this invention, a drive mechanism 400 is provided on the second bearing housing 230; the drive mechanism 400 uses a servo motor as the driving power, and the drive mechanism 400 uses synchronous pulley technology to transmit power to the drive shaft 210.
[0037] In this embodiment, the motor shaft of the drive mechanism 400 and the portion of the drive shaft rod 210 extending out of the second bearing seat 230 are also provided with a synchronous pulley 260. The motor shaft of the drive mechanism 400 is also provided with a set of synchronous pulleys 260. The two sets of synchronous pulleys 260 are connected to the synchronous pulleys 260 by a synchronous belt.
[0038] In addition to the above technical solutions, the motor shaft of the drive mechanism 400 and the part of the drive shaft rod 210 extending out of the second bearing seat 230 can also be driven by a gear structure.
[0039] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.
[0040] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.
Claims
1. A jacking device with a self-locking mechanism, characterized in that, include: The main sliding base (100) includes a rectangular pusher (110) and a drive cavity (120) located at the center of the rectangular pusher (110); A lead screw drive mechanism includes a drive shaft (210), a rolling slider (250), and a limiting chuck (240) disposed on the drive shaft (210); the rolling slider (250) is disposed on one side of a rectangular pusher (110), and the drive shaft (210) is assembled and connected to the rolling slider (250) and extends from the rolling slider (250) into the drive cavity (120); The locking pin assembly (300) is provided with several sets of limiting holes on the limiting chuck (240). After the lead screw transmission mechanism completes the position movement of the main sliding base (100), the locking pin assembly (300) is inserted into the limiting hole.
2. The jacking device with a self-locking mechanism as described in claim 1, characterized in that, The lead screw transmission mechanism further includes a first bearing seat (220) and a second bearing seat (230). The second bearing seat (230) is located outside the rectangular push frame (110), and the first bearing seat (220) is located inside the drive cavity (120). The drive shaft (210) is assembled with the first bearing seat (220) and the second bearing seat (230).
3. A jacking device with a self-locking mechanism as described in claim 2, characterized in that, One end of the drive shaft (210) extends out of the first bearing housing (220), and the limiting chuck (240) is arranged on the part of the drive shaft (210) that extends out of the first bearing housing (220).
4. A jacking device with a self-locking mechanism as described in claim 3, characterized in that, The second bearing housing (230) is also provided with a drive mechanism (400), and the portion of the drive shaft (210) extending out of the second bearing housing (230) is also provided with a synchronous pulley (260). The drive mechanism (400) is connected to the synchronous pulley (260) via a synchronous belt.
5. A jacking device with a self-locking mechanism as described in claim 4, characterized in that, The end face of the rectangular pusher (110) away from the locking pin assembly (300) is a top pushing surface. The side of the rectangular pusher (110) away from the top pushing surface is provided with a receiving groove, and the rolling slider (250) is assembled in the receiving groove.
6. A jacking device with a self-locking mechanism as described in claim 5, characterized in that, The rolling slider (250) is engaged with the drive shaft (210).
7. A jacking device with a self-locking mechanism as described in claim 6, characterized in that, The main sliding base (100) also includes a limiting guide rail (130) and a limiting slider (140). The limiting slider (140) is disposed on the rectangular push frame (110) and slides on the limiting guide rail (130).
8. A jacking device with a self-locking mechanism as described in claim 7, characterized in that, The limiting guide rail (130) is arranged parallel to the drive shaft (210).
9. A jacking device with a self-locking mechanism as described in claim 8, characterized in that, The diameter of the push rod of the locking pin assembly (300) is adapted to the diameter of the limiting socket.