Hydraulic linear telescopic module

Abstract

The utility model discloses a hydraulic linear telescopic module, which belongs to the technical field of linear modules and comprises a sliding table body, a nut and a screw, at least two sliders are slidably arranged on guide rails fixed on two sides of the top of the sliding table body, a sliding seat is fixedly connected to the tops of the sliders, and a second oil way hole transversely penetrates through the interior of the sliding seat. The second oil way hole is communicated with a third oil way hole vertically penetrating to the position between the two sliding blocks, a nut oil nozzle used for supplying oil to the position between the nut and the screw is installed in the first oil way hole communicated with the second oil way hole, oil nozzles are arranged on the two sides of the second oil way hole respectively, and each oil nozzle comprises an oil nozzle shell embedded in the second oil way hole and a spring fixed to the inner cavity wall of the oil nozzle shell. The spring abuts against the steel ball and is used for switching between the oil way supply state and the sealing state. Lubricating operation is simplified, maintenance convenience is improved, the lubricating efficiency and uniformity are improved, meanwhile, frictional wear is reduced, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of linear module, in particular to a hydraulic linear telescopic module. BACKGROUND

[0002] As a key mechanical component capable of providing precise linear motion, linear module has been widely used in automatic equipment, precision instruments and various industrial production lines. Its core working principle is usually to drive the slider to reciprocate on the linear guide rail by using the ball screw. In this process, friction will occur between the ball screw and the ball nut, and between the slider and the rolling body sliding channel of the linear guide rail due to relative motion. Long-term and high-frequency friction not only causes energy loss, but also causes wear of related moving parts, thereby affecting the positioning accuracy, running stability and overall service life of the linear module.

[0003] In order to effectively reduce wear, ensure smooth movement and prolong service life, it is very important to regularly and fully lubricate these key friction points in the linear module. However, the linear module in the prior art generally has inconvenience in lubrication maintenance. The traditional lubrication method usually requires the operator to disassemble the external cover plate or protective cover of the linear module, and then access each independent lubrication point such as the ball screw, each slider and the linear guide rail, and manually inject oil one by one.

[0004] This lubrication operation process not only has complicated operation steps and consumes a lot of working hours, significantly increasing the workload of maintenance personnel, but also in some cases where the equipment has high integration or the installation space is limited, it is very difficult to disassemble the cover plate. These factors together lead to low maintenance efficiency, thereby affecting the overall operation efficiency and production plan of the equipment. SUMMARY

[0005] The purpose of the present application is to simplify the lubrication operation, improve the maintenance convenience, improve the lubrication efficiency and uniformity, reduce the friction and wear, and prolong the service life.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: a hydraulic linear telescopic module, comprising a sliding table body and a nut and a screw rod, at least two sliders are slidably arranged on the top of the sliding table body on both sides of the fixed guide rail, a sliding seat is fixedly connected to the top of the slider, a second oil passage hole is transversely formed in the sliding seat, the second oil passage hole is connected to a third oil passage hole vertically penetrating between the two sliders, and a first oil passage hole connected to the second oil passage hole is provided with a nut oil nozzle for supplying oil between the nut and the screw rod;

[0007] An oil nozzle is arranged on each side of the second oil passage hole, the oil nozzle comprises an oil nozzle shell embedded in the second oil passage hole and a spring fixed on the inner cavity wall of the oil nozzle shell, and the spring presses a steel ball to switch between oil supply and sealing state.

[0008] As the further description of the above technical solution: the screw rod penetrates through the slide base body and is rotationally connected with the slide base body, the nut is sleeved with threads outside the screw rod, and the top of the nut is fixedly connected with the bottom of the slide base.

[0009] As the further description of the above technical solution: the three-way oil pipe is arranged between two adjacent sliding blocks, two straight-through ends of the three-way oil pipe are communicated with the two sliding blocks respectively, and a vertical end of the three-way oil pipe is communicated with the third oil hole.

[0010] As the further description of the above technical solution: the third oil hole and the first oil hole are both perpendicular to the first oil hole, and the third oil hole is provided with at least two.

[0011] As the further description of the above technical solution: the first oil hole, the second oil hole and the third oil hole are integrally processed and formed through the inner wall of the slide base, to form a continuous oil channel.

[0012] As the further description of the above technical solution: the nut oil nozzle is connected with the first oil hole through the quick-change joint, for quickly replacing the nut oil nozzle of different specifications in different working environments.

[0013] As the further description of the above technical solution: the guide rail is made of high-hardness bearing steel material and is fixed with the slide base body through the positioning pin, and a sealing ring is arranged at the connection between the guide rail and the slide base body.

[0014] As the further description of the above technical solution: the sliding block is made of quenched steel material, the surface of the sliding block is precisely ground and is fixedly connected to the lower part of the slide base through the locking screw.

[0015] As the further description of the above technical solution: the screw rod is a ball screw and is made of high-strength rolling bearing steel, and the nut is a ball nut matched with the ball screw.

[0016] As the further description of the above technical solution: the oil nozzle shell is matched with the second oil hole through press fitting, and the pre-tightening force of the spring can ensure that the steel ball completely closes the oil way when no oil is supplied.

[0017] As described above, due to the adoption of the above technical solution, the beneficial effects of the present application are:

[0018] 1. Through the integrated oil way, the lubricating oil can be injected from the oil nozzle arranged outside the slide base, and multiple key lubrication points in the module can be supplied with oil at the same time, the operator does not need to disassemble the module cover plate, the lubrication and maintenance steps are greatly simplified, the maintenance time is shortened, and the labor intensity is reduced.

[0019] 2. The lubricating oil can be effectively distributed to each sliding block and the frictional part of the nut and screw rod through the first oil passage hole, the second oil passage hole, the third oil passage hole and the three-way oil pipe, which is more conducive to controlling the oil amount and realizing uniform and sufficient lubrication of each lubricating point, avoiding the problems of uneven oil distribution, insufficient lubrication or excessive lubrication in some areas caused by traditional manual point-by-point lubrication.

[0020] 3. The oil passage is mainly integrated in the slide and is integrally processed and formed, which reduces the number of external pipelines and joints, makes the overall structure more compact, and also reduces the risk of lubricating oil leakage caused by loose joints or aging pipelines, and improves the reliability and cleanliness of the module.

[0021] 4. Since lubrication maintenance is simple and fast, maintenance can be performed more frequently to ensure that the equipment is always in the best working condition, reducing downtime caused by poor lubrication, and indirectly improving the overall operation efficiency of the production equipment.

[0022] 5. The oil passage is quickly switched between the oil supply and sealing states through the oil nozzle, ensuring that the lubricating oil is supplied on demand, while keeping the oil passage clean and sealed in the non-oil supply state, avoiding waste and pollution of the lubricating oil, and preventing contaminants from entering the oil passage, causing wear of precision parts, thereby prolonging their service life. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The structural schematic diagram of the present application is shown;

[0024] Figure 2 The first cross-sectional structural schematic diagram of the present application is shown;

[0025] Figure 3 The second cross-sectional structural schematic diagram of the present application is shown;

[0026] Figure 4 The cross-sectional view of the oil nozzle of the present application is shown.

[0027] LEGEND:

[0028] 11, slide body; 12, slide; 13, three-way oil pipe; 141, first oil passage hole; 142, second oil passage hole; 143, third oil passage hole; 15, sliding block; 16, guide rail; 17, nut; 18, screw rod; 19, nut oil nozzle; 20, oil nozzle; 21, oil nozzle shell; 22, spring; 23, steel ball. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0030] Please refer to Figures 1-4 The present application provides a technical solution: a hydraulic linear telescopic module, comprising a sliding table body 11 and a nut 17 and a screw rod 18. Specifically, the sliding table body 11 serves as the fixed base of the entire module, and the main body is made of high-strength aluminum alloy profile or cast steel welding, thereby ensuring that the structure has excellent rigidity and stability. Two mutually parallel guide rails 16 are arranged symmetrically along the telescopic direction on the upper surface of the sliding table body 11. The guide rails 16 are subjected to precise grinding and polishing treatment, and the surface is provided with a positioning pin hole, and is stably installed on the sliding table body 11 through a positioning pin.

[0031] Furthermore, at least two sliding blocks 15 are slidingly installed on the guide rails 16. The top of the sliding block 15 is fixedly connected with a sliding seat 12. Specifically, the guide rail 16 is made of high-hardness bearing steel to ensure its wear resistance and load capacity.

[0032] To prevent dust and other impurities from entering, a sealing ring can be installed at the connection between the guide rail 16 and the sliding table body 11. The sliding block 15 is made of quenched steel material, and the surface is subjected to precise grinding treatment and is fixed in the matching position of the sliding seat 12 through locking screws. A sealing oil scraping piece is arranged between the contact surface of the sliding block 15 and the guide rail 16 to further block the invasion of external impurities, thereby improving the reliability of operation.

[0033] The sliding seat 12 is connected with the sliding block 15 through a fixing structure. The material is selected from aluminum alloy or steel plate according to the load requirement. The aluminum alloy material helps to reduce the overall weight, while the steel plate provides higher strength performance. The lower sides of the sliding seat 12 are installed with the sliding block 15 through screws. A plurality of mounting screw holes are arranged at the top end of the sliding seat 12 for fixing the driving device or bearing passive components. At the same time, the sliding seat 12 is preformed with oil passage holes leading to the nut 17 and the sliding block 15, which can effectively distribute lubricating oil to each lubricating point, ensuring the smoothness and durability of system operation.

[0034] Furthermore, the screw rod 18 penetrates through the sliding table body 11 and is rotationally connected with the sliding table body 11. The nut 17 is threadedly sleeved on the outer ring of the screw rod 18. The top of the nut 17 is fixedly connected with the bottom of the sliding seat 12.

[0035] Specifically, the screw rod 18 adopts a ball screw design, penetrates through the slide table body 11 and is rotationally connected with the slide table body 11, is made of high-strength rolling bearing steel, has a surface that is precisely ground, and has a high-precision tolerance grade. The screw rod 18 mainly functions to convert rotary motion into linear motion, and is supported at both ends by bearings on the side plates of the slide table body 11 and is connected to the shaft coupling of a driving motor or hydraulic motor by a key connection.

[0036] The nut 17 is a ball nut matched with the screw rod 18, is threadedly sleeved on the outer ring of the screw rod 18, and is fixed at the top to the bottom of the slide base 12. This mounting mode ensures that the screw rod 18 can effectively avoid axial movement or loosening when bearing a load or operating at high speed.

[0037] Furthermore, the second oil passage hole 142 is horizontally and transversely provided in the slide base 12, the second oil passage hole 142 is further communicated to the third oil passage hole 143 vertically penetrating between the two sliding blocks 15, and the second oil passage hole 142 is also connected with the first oil passage hole 141.

[0038] The first oil passage hole 141 is provided with a nut oil nozzle 19, the nut oil nozzle 19 is dedicated to providing lubricating oil between the nut 17 and the screw rod 18, the first oil passage hole 141, the second oil passage hole 142 and the third oil passage hole 143 are integrally machined through the inner wall of the slide base 12, and constitute a continuous and leak-proof oil channel system.

[0039] The third oil passage hole 143 and the first oil passage hole 141 are both perpendicular to the first oil passage hole 141, and the third oil passage hole 143 is provided with at least two.

[0040] Furthermore, the two sides of the second oil passage hole 142 are respectively provided with oil nozzles 20, and through the oil nozzles 20, the second oil passage hole 142, the third oil passage hole 143 and the three-way oil pipe 13, lubricating oil injection between the four sliding blocks 15 and the guide rails 16 can be realized; in addition, lubricating oil injection between the nut 17 and the screw rod 18 can also be realized through the first oil passage hole 141 and the nut oil nozzle 19.

[0041] Specifically, after the lubricating oil is injected from the oil nozzle 20, it can be uniformly distributed to the four sliding blocks 15 and the guide rails 16 for lubrication through the second oil passage hole 142 and the third oil passage hole 143 and the three-way oil pipe 13 installed between the two adjacent sliding blocks 15, the two horizontal ends of the three-way oil pipe 13 are respectively communicated with the sliding blocks 15, and the vertical end is communicated with the third oil passage hole 143, and at the same time, the lubricating oil can also realize synchronous lubrication of the nut 17 and the screw rod 18 through the first oil passage hole 141 and the nut oil nozzle 19.

[0042] The first oil passage hole 141, the second oil passage hole 142 and the third oil passage hole 143 are integrally formed in the inner wall of the sliding base 12, and the oil channel is formed by connecting the three-way oil pipe 13 and the oil nozzle 20, so that the lubricating oil from a single oil injection point can be uniformly distributed between the four sliding blocks 15 and the guide rails 16. At the same time, the screw rod 18 and the nut 17 can be synchronously injected through the nut oil nozzle 19, avoiding the problems of uneven oil distribution, lubrication dead angle and excessive accumulation caused by the traditional multi-pipeline and dispersed oil injection mode. This integrated oil passage structure not only simplifies the layout of the internal pipeline, but also realizes synchronous oil supply of each lubrication point in the sliding base 11 and the sliding base 12, thereby ensuring stable oil supply during operation, effectively reducing friction resistance and significantly reducing component wear.

[0043] Moreover, compared with the prior art which needs to disassemble the cover plate and manually inject oil point by point or lay complex branch pipelines, the module only needs to set a plurality of nut oil nozzles 19 and oil nozzles 20 on the sliding base 12 to complete the overall lubrication of the module. Especially the quick-change joint type nut oil nozzle 19 can quickly replace different specifications of oil injection nozzles under different environments or lubrication requirements, greatly shortening the maintenance time and reducing the workload and operation difficulty of the maintenance site.

[0044] At the same time, the complicated way of laying independent oil pipes for each sliding block 15, nut 17 and screw rod 18 and connecting them to the distributor one by one is omitted, and the internal sliding base 12 and a small amount of detachable oil nozzle can complete the lubrication of the whole module, greatly reducing the number of pipeline interfaces and sealing elements, thereby reducing the risk of leakage and failure points, and also facilitating mass production and assembly.

[0045] Furthermore, the oil nozzle 20 includes an oil nozzle shell 21 embedded in the second oil passage hole 142 and a spring 22 fixed on the inner cavity wall of the oil nozzle shell 21, and the spring 22 presses the sealing steel ball 23 to switch between oil supply and sealing state.

[0046] Specifically, the oil nozzle shell 21 constitutes the main part of the oil nozzle 20, which is embedded in the second oil passage hole 142, and through the optimization of its material and processing precision, the close fit between the oil nozzle shell 21 and the second oil passage hole 142 is ensured, thereby effectively preventing the leakage of lubricating oil in the non-supply state.

[0047] The spring 22 is fixed on the inner cavity wall of the oil nozzle shell 21, providing a continuous and stable pre-tightening force. Under the action of the spring 22, the sealing steel ball 23 tightly fits the oil nozzle outlet to form a reliable seal.

[0048] When it is necessary to inject lubricating oil, the pressure applied by the external oil injection gun is sufficient to overcome the pre-tightening force of the spring 22, thereby pushing the sealing steel ball 23 to move inward, opening the oil passage, and lubricating oil can be smoothly injected. Once the oil injection is completed and the oil injection gun is removed, the spring 22 will immediately push the sealing steel ball 23 back to the sealing position, effectively preventing the backflow of lubricating oil and the intrusion of external contaminants.

[0049] This design realizes the rapid switching of the oil passage between the oil supply and sealing states, ensures the on-demand supply of lubricating oil, and at the same time maintains the cleanliness and sealing of the oil passage in the non-oil supply state, avoiding the waste and contamination of lubricating oil. In addition, by preventing the entry of contaminants into the oil passage, this design effectively protects precision components such as the slider 15, guide rail 16, screw 18, and nut 17 from abrasive wear, thereby prolonging their service life.

[0050] Furthermore, the nut oil nozzle 19 is connected to the first oil passage hole 141 through a quick-change connector, which is used to quickly replace different specifications of the nut oil nozzle 19 in different working environments, greatly improving the convenience of maintenance.

[0051] Specifically, the design of the quick-change connector enables the operator to quickly disconnect or connect the nut oil nozzle 19 without the need for special tools or complex disassembly. When the lubrication system needs to inspect, maintain, or replace different specifications and types of nut oil nozzles 19, this design simplifies the relevant operations and makes them efficient and convenient. At the same time, the quick-change connector also supports the quick replacement of the most suitable nut oil nozzle 19 according to the specific working environment or specific lubrication requirements, thereby further optimizing the lubrication effect.

[0052] Furthermore, a three-way oil pipe 13 is provided between two adjacent sliders 15, the two straight-through ends of the three-way oil pipe 13 are respectively communicated with the sliders 15, and the vertical end of the three-way oil pipe 13 is communicated with the third oil passage hole 143.

[0053] Specifically, the two straight-through ends of the three-way oil pipe 13 are respectively communicated with the lubricating oil inlets on the two adjacent sliders 15, and the vertical end of the three-way oil pipe 13 is connected with the third oil passage hole 143 inside the slide 12. The third oil passage hole 143 is one of the lubricating oil distribution channels from the second oil passage hole 142.

[0054] Through the bridging action of the three-way oil pipe 13, lubricating oil from the third oil passage hole 143 can be simultaneously and relatively uniformly distributed to the two sliders 15 connected thereto, thereby ensuring that the sliders 15 on the same guide rail 16 can obtain consistent lubrication effect, effectively avoiding the problem of local wear intensification or inconsistent movement resistance caused by uneven lubrication.

[0055] In addition, compared with the scheme of laying oil pipes or oil holes for each slider 15 separately, the design way of adopting the tee pipe 13 can not only cover multiple lubrication points with fewer oil road branches, thereby simplifying the complexity of the oil road system inside the sliding seat 12, but also reduce the processing difficulty and manufacturing cost, and the integrated pipeline design reduces the potential leakage points, further improves the overall reliability and sealing performance of the lubrication system.

[0056] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can make equivalent replacements or changes within the technical range disclosed by the present application according to the technical solution and the inventive concept of the present application, which should be covered within the protection scope of the present application.

Claims

1. A hydraulic linear telescopic module comprising a slide table body (11) and a nut (17) and a screw (18), characterized in that: The guide rail (16) fixed on both sides of the top of the sliding table body (11) slides with at least two sliding blocks (15), the top of the sliding block (15) is fixedly connected with a sliding seat (12), the second oil passage hole (142) is transversely and through in the sliding seat (12), the second oil passage hole (142) is communicated with the third oil passage hole (143) vertically through between the two sliding blocks (15), the first oil passage hole (141) communicated with the second oil passage hole (142) is provided with a nut oil nozzle (19) for supplying oil between the nut (17) and the screw rod (18). The oil nozzle (20) is arranged on both sides of the second oil passage hole (142), the oil nozzle (20) comprises an oil nozzle shell (21) embedded in the second oil passage hole (142) and a spring (22) fixed on the inner cavity wall of the oil nozzle shell (21), and the spring (22) presses a steel ball (23) for switching between oil supply and sealing state.

2. The hydraulic linear telescopic module according to claim 1, characterized in that: The screw rod (18) penetrates through the sliding table body (11) and is rotationally connected with the sliding table body (11), the nut (17) is threadedly sleeved on the outer circle of the screw rod (18), and the top of the nut (17) is fixedly connected with the bottom of the sliding seat (12).

3. The hydraulic linear extension and retraction module of claim 1, wherein: A three-way oil pipe (13) is arranged between the two adjacent sliding blocks (15), two straight-through ends of the three-way oil pipe (13) are communicated with the two sliding blocks (15) respectively, and the vertical end of the three-way oil pipe (13) is communicated with the third oil passage hole (143).

4. The hydraulic linear extension and retraction module of claim 1, wherein: The third oil passage hole (143) and the first oil passage hole (141) are both perpendicular to the first oil passage hole (141), and the third oil passage hole (143) is provided with at least two.

5. The hydraulic linear extension and retraction module of claim 1, wherein: The first oil passage hole (141), the second oil passage hole (142) and the third oil passage hole (143) are integrally processed and formed through the inner wall of the sliding seat (12), forming a continuous oil channel.

6. The hydraulic linear extension and retraction module of claim 1, wherein: The nut oil nozzle (19) and the first oil passage hole (141) are connected through a quick-change joint, which is used for quickly replacing different specifications of the nut oil nozzle (19) in different working environments.

7. The hydraulic linear extension and retraction module of claim 1, wherein: The guide rail (16) is made of high-hardness bearing steel material and is fixed with the sliding table body (11) through a positioning pin, and a sealing ring is arranged at the connection between the guide rail (16) and the sliding table body (11).

8. The hydraulic linear extension and retraction module of claim 1, wherein: The sliding block (15) is made of quenched steel material, the surface of the sliding block (15) is precisely ground and fixedly connected to the lower part of the sliding seat (12) through a locking screw.

9. The hydraulic linear extension and retraction module of claim 1, wherein: The screw rod (18) is a ball screw and is made of high-strength rolling bearing steel, and the nut (17) is a ball nut matched with the ball screw.

10. The hydraulic linear extension and retraction module of claim 1, wherein: The oil nozzle shell (21) and the second oil passage hole (142) are matched through press fitting, and the pre-tightening force of the spring (22) can ensure that the steel ball (23) completely seals the oil passage when no oil is supplied.

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