Self-driven mechanical locking position hydraulic device
Through the self-driven mechanical locking position hydraulic device, the self-locking of the workpiece is achieved by utilizing the reduction motor and mechanical structure, which solves the problem of accurate locking and stable maintenance of the hydraulic system in the position control of large-load workpieces, reduces energy consumption and system complexity, and improves production efficiency and safety.
Patent Information
- Application Number
- CN202423237386.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-27
AI Technical Summary
During the machining and handling of heavy-load workpieces, it is difficult for the hydraulic system to achieve precise locking and stable maintenance of the working position, resulting in high energy consumption and safety hazards.
A self-driven mechanical locking position hydraulic device is designed, which uses a reduction motor and mechanical structure to achieve self-locking after the hydraulic cylinder moves into position, maintains the workpiece position through mechanical force, and reduces the dependence on the continuous hydraulic oil supply of the hydraulic system.
The workpiece can be kept stably in the working position for a long time, which reduces energy consumption and system complexity and improves production efficiency and safety.
Smart Images
Figure CN223469505U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of hydraulic devices, for example to a self-driven mechanical locking position hydraulic device. BACKGROUND
[0002] In today's era, with the rapid development of the industrial field, the application of automatic production lines in various production and manufacturing scenes has become increasingly widespread. In many large-scale production scenes, especially on production lines involving heavy load operations, hydraulic technology occupies a very important position and is increasingly widely used due to its unique advantages. The powerful power output capability and precise control characteristics of the hydraulic system make it perfectly adapt to the complex operation requirements under heavy load working conditions, whether it is to drive the operation of heavy mechanical parts or to maintain a high intensity production rhythm, it has shown excellent performance.
[0003] However, it cannot be ignored that in the processing and handling of heavy load workpieces, the accurate locking and stable holding of the working position is always a thorny problem, and this problem has become the key to restricting the improvement of overall production efficiency. When facing the position control requirements of heavy load workpieces, if simply relying on hydraulic pressure to continuously lock and hold, it means that the hydraulic system must continuously provide stable and continuous hydraulic oil supply. Moreover, in order to ensure the accuracy and stability of the workpiece position, a complex and delicate repeated closed-loop control mechanism is needed to achieve it. This process undoubtedly consumes a large amount of energy resources, and puts high durability requirements on the various components of the hydraulic system. At the same time, due to the complexity of the closed-loop control, any slight fluctuation or failure of the system may cause the deviation of the workpiece position, thereby affecting the product quality and production progress, and in severe cases, it may cause safety accidents, bringing many adverse effects to the production and operation of enterprises SUMMARY
[0004] To solve the above technical problems, the utility model provides a self-driven mechanical locking position hydraulic device. The device realizes self-driven mechanical position locking and holding after the hydraulic cylinder is moved to the position, and locks and holds the workpiece at the working position for a long time.
[0005] The technical scheme adopted by the utility model to solve its technical problems is:
[0006] The utility model provides a self-driven mechanical locking position hydraulic device, comprising:
[0007] The hydraulic cylinder body is provided with a center hole in the piston rod, and the center hole is matched with the secondary piston gap; the shaft center of the secondary piston is provided with a hole and an internal thread, and the internal thread is connected with the external thread of the center rod; the center rod is provided with an oil passage, and the other end is provided with a rod cavity oil port B and an annular groove;
[0008] The reduction motor is fixedly installed outside the rear end cover of the hydraulic cylinder body.
[0009] The spline shaft is in transmission connection with the output shaft of the reduction motor.
[0010] The spline shaft sleeve is matched with the spline shaft in the axial gap, and the spline shaft sleeve is interference-fitted in the inner hole of one end of the transmission shaft.
[0011] The driving wheel is assembled and connected with the key groove at the shaft shoulder end of the transmission shaft through the key, and is engaged with the locking wheel on the hydraulic cylinder body.
[0012] The transmission shaft is matched with the shaft sleeve in the gap,
[0013] The shaft sleeve is located in the processing hole of the support plate on the hydraulic cylinder body.
[0014] In some embodiments, one end of the piston rod is connected with the load, the shaft center is provided with a silencer, and the outer circle is matched with the internal thread of the locking wheel through the thread; the other end of the piston rod is provided with a stepped shaft, the shaft center is provided with a center hole, and the center hole is matched with the secondary piston in the gap.
[0015] In some embodiments, the center hole of the piston rod is sealingly connected with the guide sleeve at the end.
[0016] In some embodiments, the guide sleeve is provided with a center hole matched with the center rod in the gap.
[0017] In some embodiments, the rear end cover is provided with a rod cavity oil port A, and the hydraulic oil enters the hydraulic device through the rod cavity oil port A.
[0018] In some embodiments, the rear end cover is installed on the cylinder body through an internal hexagonal bolt, and a sealing member is arranged to prevent the leakage of hydraulic oil.
[0019] The self-driven mechanical locking position hydraulic device provided by the application can achieve the following technical effects:
[0020] The device can realize self-driven mechanical position locking and keeping after the hydraulic cylinder moves to the position, and can keep the workpiece in the working position for a long time without relying on the hydraulic system to provide continuous hydraulic oil and through repeated closed-loop control to keep the position.
[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the application. BRIEF DESCRIPTION OF DRAWINGS
[0022] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the embodiments. Like numbers refer to like elements throughout the drawings, which are not necessarily to scale, and in which:
[0023] Figure 1 is a structural schematic diagram of a self-driven mechanical locking position hydraulic device provided by the embodiments of the present disclosure;
[0024] Figure 2 is a schematic diagram of a state after the piston rod is extended;
[0025] Figure 3 is a schematic diagram of a state when the hydraulic device locks the load in the working position;
[0026] Reference signs:
[0027] 1, hydraulic cylinder body; 2, speed reduction motor; 3, inner hexagonal bolt one; 4, inner hexagonal bolt two; 5, set screw; 6, motor mounting seat; 7, spline shaft sleeve; 8, transmission shaft; 9, spline shaft; 10, clamping key; 11, shaft sleeve; 12, driving wheel; 13, flat key; 14, locking nut; 1.1, locking wheel; 1.2, gland; 1.3, cylinder body; 1.4, guide ring; 1.5, support plate; 1.6, hole grommet; 1.7, hole guide belt; 1.8, shaft hole universal seal; 1.9, O-ring and retainer one; 1.10, auxiliary piston; 1.11, center rod; 1.12, piston rod; 1.13, anti-rotation pin shaft; 1.14, shaft seal; 1.15, hole guide belt; 1.16, piston combined seal; 1.17, O-ring and retainer two; 1.18, guide sleeve; 1.19, O-ring and retainer three; 1.20, inner hexagonal bolt three; 1.21, rear end cover; 1.22, inner hexagonal bolt four; 1.23, rear gland; 1.24, O-ring and retainer four; 1.25, shaft grommet; 1.26, shaft guide belt; 1.27, silencer. DETAILED DESCRIPTION
[0028] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below, and the attached drawings are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.
[0029] The terms "first", "second", etc. in the description, claims, and drawings of the embodiments of the present disclosure, and the above-described figures are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.
[0030] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.
[0031] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.
[0032] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0033] In combination with Figure 1 As shown, the self-driven mechanical locking position hydraulic device provided by the embodiments of the present disclosure is mainly used for clamping and locking workpieces in industrial production, and mainly consists of a hydraulic cylinder body 1, a speed reducer motor 2, an inner hexagonal bolt 1 3, an inner hexagonal bolt 2 4, a set screw 5, a motor mounting seat 6, a spline shaft sleeve 7, a transmission shaft 8, a spline shaft 9, a key 10, a shaft sleeve 11, a driving wheel 12, a flat key 13, and a locking nut 14.
[0034] Wherein the hydraulic cylinder body 1 includes locking wheel 1.1, gland 1.2, cylinder 1.3, guide ring 1.4, support plate 1.5, hole Gley ring 1.6, hole guide belt 1.7, shaft hole general seal 1.8, O ring and retainer 1.9, secondary piston 1.10, center rod 1.11, piston rod 1.12, anti-rotation pin 1.13, shaft seal 1.14, hole guide belt 1.15, piston combined seal 1.16, O ring and retainer 1.17, guide sleeve 1.18, O ring and retainer 1.19, hexagonal bolt three 1.20, rear cover 1.21, hexagonal bolt four 1.22, rear gland 1.23, O ring and retainer 1.24, shaft Gley ring 1.25, shaft guide belt 1.26 and muffler 1.27. The specific structure is shown in Figure 1 .
[0035] The piston rod 1.12 is designed with mounting threads at one end to connect with the load, and with a silencer 1.27 at the shaft center to exhaust and suppress the noise generated by the operation of the oil cylinder; the outer circle is designed with threads to cooperate with the inner threads of the locking wheel 1.1. The other end of the piston rod 1.12 is designed with a stepped shaft, the large diameter end of which serves as a moving piston, and the shaft center is designed with a central hole that is gap fitted with the auxiliary piston 1.10, and is provided with a hole guide belt 1.7 to guide and support during movement; a hole gasket 1.6 and a shaft hole universal seal 1.8 are provided to prevent the hydraulic oil on both sides of the auxiliary piston 1.10 from leaking into each other during operation. The shaft center of the auxiliary piston 1.10 is designed with a hole and internal threads, which are connected with the external threads of the center rod 1.11, connecting the auxiliary piston and the center rod 1.11 together, and an O-ring and a check ring 1.9 are provided to prevent hydraulic oil leakage. The end of the central hole of the piston rod 1.12 is designed with internal threads, which are connected with the external threads of the guide sleeve 1.18, connecting the piston rod 1.12 and the guide sleeve 1.18 together, and an O-ring and a check ring 1.17 are provided to prevent hydraulic oil leakage. The guide sleeve 1.18 is designed with a central hole that is gap fitted with the center rod 1.11, and is designed with a shaft seal 1.14 and a shaft gasket 1.25 to prevent hydraulic oil leakage; a shaft guide belt 1.26 is designed to guide and support during movement. The center rod 1.11 is designed with an oil passage, and the other end is designed with a rod cavity oil port B and an annular groove, and the rear gland 1.23 is designed as a half split, which is clamped in the annular groove of the center rod 1.11 during installation, and is installed on the rear end cover 1.21 by means of an internal hexagonal bolt 4 1.22. The rear end cover 1.21 is designed with a rod cavity oil port A, which is installed together with the cylinder body 1.3 by means of an internal hexagonal bolt 3 1.20, and is provided with an O-ring and a check ring 3 1.19, an O-ring and a check ring 4 1.24 to prevent hydraulic oil leakage. The large diameter end of the stepped shaft of the piston rod 1.12 is gap fitted with the cylinder body 1.3, and is designed with a hole guide belt 1.15 to guide and support during movement; a piston combined seal 1.16 is designed to prevent the hydraulic oil on both sides from leaking into each other during operation. The anti-rotation pin shaft 1.13 is installed on the rear end cover 1.21 by means of threads, and extends into the machined hole of the piston rod 1.12 to prevent the piston rod 1.12 from rotating during movement. The guide ring 1.4 is made of QT500 material and is installed in the cylinder body 1.3 by interference fit, and is gap fitted with the piston rod 1.12 to guide the piston rod 1.12 during operation. The gland 1.2 is connected together with the cylinder body 1.3 by means of threads to press the guide ring 1.4 tightly. The support plate 1.5 is welded together with the cylinder body 1.3, and is installed together with the foundation during use. The above assembly and composition form the hydraulic cylinder body 1.
[0036] The motor mounting seat 6 is installed on the rear end cover 1.21 of the hydraulic cylinder body 1 through the inner hexagonal bolt 3. The reduction motor 2 is installed on the motor mounting seat 6 through the inner hexagonal bolt 2, the output shaft of the reduction motor 2 is connected and installed in the inner hole of the spline shaft 9 through the key carried by itself, and the movement torque of the motor is transmitted to the spline shaft 9 through the key carried by itself, and the tight screw 5 prevents them from being separated axially. The spline shaft 9 is used in conjunction with the spline shaft sleeve 7, and is axially gap-fitted, and constitutes a screw system, and the spline shaft sleeve 7 is interference-fitted in the inner hole of the transmission shaft 8. The other end of the transmission shaft 8 is designed with a key groove and a thread, the driving wheel 12 is assembled together with the transmission shaft 8 through the key 13, and the torque of the transmission shaft 8 is transmitted to the driving wheel 12 through the key 13, and the lock nut 14 is connected together with the transmission shaft 8 through the thread, and the driving wheel 12 is axially pressed on the transmission shaft shoulder. The driving wheel 12 and the locking wheel 1.1 constitute a gear train, the shaft sleeve 11 is made of tin bronze material, is gap-fitted with the transmission shaft 8, and plays a guiding role for the movement of the transmission shaft 8, the shaft sleeve 11 is processed with a clamping key groove, is interference-fitted in the processed hole of the supporting plate 1.5, and is prevented from moving axially through the clamping key 10 and the shaft shoulder. The above assembly and composition constitute a self-driven mechanical locking position hydraulic device.
[0037] Further description of the present application is made in combination with the application of the self-driven mechanical locking position hydraulic device.
[0038] The self-driven mechanical locking position hydraulic device is installed on the production line, when the load needs to be lifted to a certain working position, the oil inlet A of the rodless cavity of the hydraulic device, and the oil return B of the rod cavity, at this time, the piston rod 1.12 of the hydraulic device is extended, and the piston rod 1.12 drives the locking wheel 1.1, the driving wheel 12 and the transmission shaft 8 to move together (as shown in Figure 2 When the piston rod 1.12 is extended to the specified position, the reduction motor 2 is started, the transmission shaft 8 is driven to rotate through the spline shaft sleeve 7, the driving wheel 12 is driven to rotate by the transmission shaft 8, the driving wheel 12 is driven to rotate by the locking wheel 1.1, and the locking wheel 1.1 is locked at the working position after rotating to the position. At this time, no hydraulic oil is provided in the rodless cavity, and the weight of the load is entirely borne by the thread mechanical force between the locking wheel 1.1 and the piston rod 1.12 (as shown in Figure 3 ).
[0039] When the work is completed, and the load needs to be lowered, the rodless cavity is first supplied with hydraulic oil, and then the speed reducer motor 2 starts (in the opposite direction to the load lifting work process), the transmission shaft 8 is rotated through the spline shaft sleeve 7, the transmission shaft 8 drives the driving wheel 12 to rotate, the driving wheel 12 drives the locking wheel 1.1 to rotate, and in this process, the load is entirely borne by the hydraulic pressure of the rodless cavity. When the locking wheel 1.1 rotates to the safe waiting position from the locking position, the hydraulic device has the rod cavity oil port B to enter the oil, and the rodless cavity oil port returns the oil, at this time, the hydraulic device piston rod 1.12 is retracted, and the piston rod 1.12 drives the locking wheel 1.1, the driving wheel 12 and the transmission shaft 8 to move to the original position together.
[0040] The above description and drawings suffice to fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments can include structural and other changes. The embodiments represent only a few of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims
1. A self-actuated mechanical lock-up position hydraulic device, characterized by, It includes: The hydraulic cylinder body (1) is provided with a center hole in the piston rod (1.12), and the center hole is in clearance fit with the auxiliary piston (1.10); the auxiliary piston (1.10) is provided with a hole and an internal thread at the shaft center, and the internal thread is connected with the external thread of the center rod (1.11); the center rod (1.11) is provided with an oil passage, and the other end is provided with a rod cavity oil port B and an annular groove; The reduction motor (2) is fixedly installed outside the rear end cover (1.21) of the hydraulic cylinder body (1); The spline shaft (9) is in transmission connection with the output shaft of the reduction motor (2); The spline shaft sleeve (7) is in clearance fit with the spline shaft (9), and the spline shaft sleeve (7) is interference fitted in the inner hole of one end of the transmission shaft (8); The driving wheel (12) is assembled and connected with the key groove of the shaft shoulder end of the transmission shaft (8) through the key, and is engaged with the locking wheel (1.1) on the hydraulic cylinder body (1); The transmission shaft (8) is in clearance fit with the shaft sleeve (11), The shaft sleeve (11) is located in the machining hole of the support plate (1.5) on the hydraulic cylinder body (1).
2. A self-actuating mechanical lock-up position hydraulic device according to claim 1, wherein The piston rod (1.12) is connected with the load at one end, and is provided with a silencer (1.27) at the shaft center, and the outer circle is matched with the internal thread of the locking wheel (1.1) through threads; the other end of the piston rod (1.12) is provided with a stepped shaft, and the shaft center is provided with a center hole, and the center hole is in clearance fit with the auxiliary piston (1.10).
3. A self-actuating mechanical lock-up position hydraulic device according to claim 2, wherein The center hole of the piston rod (1.12) is sealingly connected with the guide sleeve (1.18).
4. A self-actuating mechanical lock-up position hydraulic device according to claim 3, wherein The guide sleeve (1.18) is provided with a center hole, which is in clearance fit with the center rod (1.11).
5. A self-actuating mechanical lock-up position hydraulic device according to claim 1, wherein The rear end cover (1.21) is provided with a rodless cavity oil port A, and the hydraulic oil enters the hydraulic device through the rodless cavity oil port A.
6. A self-actuating mechanical lock-up position hydraulic device according to claim 1, wherein The rear end cover (1.21) is installed on the cylinder body (1.3) through the internal hexagonal bolt three (1.20), and a sealing element is arranged to prevent hydraulic oil leakage.