Long-stroke servo electric cylinder with dustproof and anti-rotation functions

Abstract

The invention relates to the field of servo electric cylinders, and discloses a long-stroke servo electric cylinder with dustproof and anti-rotation functions, the long-stroke servo electric cylinder comprises a servo electric cylinder body, the servo electric cylinder body is mainly divided into a cylinder body and a push rod, and a plurality of mounting seats are arranged on the side, close to the push rod, of the cylinder body; one of the mounting seats is always fixedly connected with the cylinder body, a limiting assembly is arranged on the side, close to the mounting seat, of the cylinder body, the limiting assembly is provided with two parts, one part of the limiting assembly is arranged on the mounting seat and the push rod, and the other part of the limiting assembly is arranged outside the device; the long-stroke servo electric cylinder with the dustproof and anti-rotation functions is provided with the mounting base and the limiting assembly, stress is dispersed by increasing fulcrums, in this way, rotation can be prevented, meanwhile, the strength is guaranteed, deformation is avoided, precision is guaranteed, the load capacity is improved, the stroke of the servo electric cylinder can continue to be prolonged to a certain degree, and the service life of the servo electric cylinder is prolonged. The material does not droop due to gravity.

Description

Technical Field

[0001] The present invention relates to the technical field of servo electric cylinders, and particularly to a long-stroke servo electric cylinder with both dust-proof and anti-rotation functions. Background Art

[0002] In the patent application with the application publication number CN118232606B for a servo electric cylinder body, a buffer mounting seat is fixedly connected to the servo electric cylinder body on the side far from the driving end. A buffer cavity is surrounded between the buffer mounting seat and the servo electric cylinder body. A switch for controlling the on / off of the servo electric cylinder body is fixedly connected to the buffer mounting seat located in the buffer cavity. Its advantages are as follows: The switch is connected to the power-on circuit of the servo electric cylinder body and is used to control the on / off of the power-on circuit. The distance from the switch to the servo electric cylinder body is greater than zero. This setting ensures that the servo electric cylinder body can stably apply a force to the switch, enabling the switch to stably cut off the power supply of the servo electric cylinder body. When the servo electric cylinder body accidentally bears a load, it will apply a force to the buffer mounting seat. At the same time, the servo electric cylinder body will extend into the buffer cavity, and the stable buffering and protection of the servo electric cylinder body are achieved through the process of entering the buffer cavity. At the same time, as the servo electric cylinder body gradually extends into the buffer cavity and applies a force to the switch, the function of the switch can be stably realized.

[0003] In the prior art including the above-mentioned patent, the motor category includes servo electric cylinders. A servo electric cylinder is a modular product integrating a servo motor and a lead screw, and is the best substitute for hydraulic cylinders and pneumatic cylinders. In the prior art, a dust-proof cover is mostly used for dust-proofing the push rod of the servo electric cylinder. However, the coverage area of the dust-proof cover on the surface of the cylinder body is limited, and it cannot completely protect the push rod inside it. When the existing servo electric cylinder limiting device encounters a special long-stroke servo electric cylinder (with a stroke of 10 meters), not only will the effect be reduced, but it and related mounting parts will bear a large deflection force, which will affect its service life and stability during operation. Summary of the Invention

[0004] The problem to be solved by the present invention is that the existing dust-proof and anti-rotation mechanisms are not applicable to long-stroke servo electric cylinders.

[0005] To solve the above technical problems, the technical solution of the present invention is: a long-stroke servo electric cylinder with both dust-proof and anti-rotation functions, including a servo electric cylinder main body, which is mainly divided into two parts: a cylinder body and a push rod. On one side of the cylinder body close to the push rod, there is a mounting seat. If there is always one mounting seat fixedly connected to the cylinder body among the mounting seats, on the side of the cylinder body close to the mounting seat, there is a limit component. The limit component has two parts in total. One part of the limit component is arranged on the mounting seat and the push rod, and the other part of the limit component is arranged outside the device. The limit component can prevent the push rod from rotating. Inside the mounting seat, there is also a dust-proof component for dust removal. The number of the mounting seats corresponds to that of the limit components one by one. There are five mounting seats and limit components in total. The number of the mounting seats and limit components can increase with the increase of the formation of the push rod.

[0006] Preferably, the mounting seat is composed of an annular block plus two lugs. The number of the mounting seats corresponds to that of the limit components. The number and distribution of the mounting seats increase with the increase of the length and working intensity of the push rod. On one side of the mounting seat close to the cylinder body, a section of the telescopic tube is fixedly connected. At the end of the push rod, there is a fixed end cap. The shape of the end cap is the same as that of the mounting seat. The lugs on both sides of the end cap are fixedly connected to the telescopic tube. At the lower end of the mounting seat, there is a fixed limit block. The size arrangement of the limit block is the same as that of the telescopic tube.

[0007] Preferably, the limit component includes a chute, which is opened on the outer surface of the mounting seat. There are four groups of chutes in total. The chutes are symmetrically arranged along the center line of the mounting seat. On the lugs on both sides of the mounting seat, there are fixed telescopic tubes. The size of the telescopic tubes gradually decreases from the cylinder body to the push rod. The number of the telescopic tubes is proportional to that of the mounting seats. The dust-proof component includes a mounting ring, which is located on the inner side of the mounting seat close to the push rod. The mounting ring is fixedly connected to the mounting seat. On the inner wall of the mounting ring, there are several scraping strips, which are inclined. The inner wall of the scraping strips is slidably connected to the push rod.

[0008] Preferably, the limit component further includes a bracket, which does not contact the servo electric cylinder main body. The bracket can be installed on the ground or the mounting frame of adjacent equipment. At the upper end of the bracket, there is a fixed slide rail. The size and number of the slide rail are the same as those of the chute. The slide rail is slidably connected to the chute. In the middle of the bracket, there is a card slot. The size and arrangement of the card slot correspond to those of the limit block. On both sides of the card slot, there are slidable limit columns. At the end of the limit column close to the inside of the bracket, there is a spring. The limit column is slidably connected to the jack. The size and size distribution of the limit column are the same as those of the jack.

[0009] Preferably, the limiting block is hollow and trapezoidal. Jack holes are provided on both sides of the limiting block. The size of the jack holes is proportional to the size of the limiting block. Insert blocks are fixedly provided on the side of the limiting block close to the cylinder block. There is no insert block on the side of the cylinder block facing the insert block. The insert block can be slidably connected to the limiting block. The size arrangement of the insert block is the same as that of the jack hole.

[0010] Preferably, a plurality of through holes are provided on the inner wall of the mounting ring. The mounting ring is hollow. The opening of the mounting ring is close to the side of the push rod. A liquid storage cavity is provided through a mounting seat on the side of the mounting ring close to the cylinder block. Lubricating oil is filled in the liquid storage cavity.

[0011] Preferably, a plurality of blocking blocks are fixedly provided on the side of the liquid storage cavity close to the mounting ring. Mortise tenons are fixedly provided on the side of the blocking block outside the liquid storage cavity. A cloth strip is provided on the outer surface of the blocking block.

[0012] Preferably, the cloth strip is slidably connected to the mortise tenon. A baffle is provided on the other side of the cloth strip. The baffle can cooperate with the mortise tenon to fix the cloth strip. The lower end of the cloth strip is used for slidably connecting with the push rod. A cover plate is provided on the side of the liquid storage cavity away from the blocking block. There are two cover plates in total.

[0013] (1) Through the arrangement of the mounting seat and the limiting component, when the push rod is pushed out to a certain distance, the mounting seat is fixed to the bracket. In this way, the fulcrum of the telescopic rod can be obtained. By increasing the fulcrum, the stress on the telescopic rod and the mounting seat can be evenly dispersed. Using this method can prevent rotation while ensuring the strength of the telescopic rod and the push rod itself, avoiding deformation caused by excessive extension, thereby extending the service life of the device to a certain extent, ensuring the accuracy of the device during operation, improving the load capacity of the servo electric cylinder. Moreover, due to the multi-level distribution of the mounting seat and the limiting component and the characteristic of being convenient to adjust the quantity, the stroke of the servo electric cylinder can be further extended to a certain extent without worrying about the material sagging due to gravity. And each group of the mounting seat and the limiting component can be repaired separately after being damaged without overall replacement, thereby controlling the cost to a certain extent, and the structure is simple and the maintenance time is not too long. (2) Through the setting of the dust-proof component, when relative movement occurs between the mounting base and the push rod, first, the push rod can be lubricated to reduce the resistance between it and the mounting base. Moreover, the lubricating oil can entrap and adhere the dust on the push rod. When the push rod retracts, the lubricating oil and dust can be shoveled off together. Through multiple shoveling operations, the dust remaining on the surface of the push rod can be greatly reduced, and it will not cause a large working load on a single dust-proof component. Thus, the wear of the push rod seal can be reduced, the generation of sludge in the cylinder body can be decreased, and dust can be prevented from affecting other electrical components in the cylinder body, thereby ensuring the normal operation of the device and extending its service life. It is worth mentioning that since the number of mounting bases increases with the increase in the stroke of the push rod, the cleaning intensity can always be guaranteed, and there will be no working pressure on the cleaning component due to the increase in area. Description of the Drawings

[0014] Figure 1 Schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Schematic diagram of the structure of the cleaning component and part of the limiting component of the present invention; Figure 3 Schematic diagram of the partial cross-sectional structure of the mounting base of the present invention; Figure 4 Schematic diagram of the bottom structure of the mounting base of the present invention; Figure 5 Schematic diagram of the structure of the bracket in the limiting component of the present invention; Figure 6 Schematic diagram of the structure of the mounting base (single) of the present invention; Figure 7 Schematic diagram of the cross-sectional structure (rear view) of the mounting base of the present invention; Figure 8 Schematic diagram of the cross-sectional structure of the cleaning component of the present invention; Figure 9 For the present invention Figure 8 Enlarged structure schematic diagram at position A; Figure 10 Schematic diagram of the structure of the mounting ring of the present invention.

[0015] In the figure: 1. Servo cylinder main body; 101. Cylinder body; 102. Push rod; 2. Mounting base; 3. Limiting component; 301. Slide groove; 302. Telescopic tube; 303. End cover; 304. Limiting block; 305. Jack; 306. Plug; 307. Bracket; 308. Slide rail; 309. Card slot; 310. Limiting column; 4. Dust-proof component; 401. Mounting ring; 402. Scraping strip; 403. Through hole; 404. Liquid storage cavity; 405. Block; 406. Tenon; 407. Cloth strip; 408. Baffle; 409. Cover plate. Detailed Embodiment

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present disclosure in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meaning understood by those of ordinary skill in the art within the field to which the present disclosure pertains. The words such as "including" or "comprising" used in the present disclosure mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may also include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0018] As Figures 1 to 10 shown, a long-stroke servo electric cylinder with both dust-proof and anti-rotation functions provided by the present invention includes a servo electric cylinder main body 1. The servo electric cylinder main body 1 is mainly divided into two parts: a cylinder block 101 and a push rod 102. A mounting seat 2 is provided on one side of the cylinder block 101 close to the push rod 102. If there is always one mounting seat 2 fixedly connected to the cylinder block 101 among the mounting seats 2, a limiting component 3 is provided on one side of the cylinder block 101 close to the mounting seat 2. The limiting component 3 has two parts in total. One part of the limiting component 3 is provided on the mounting seat 2 and the push rod 102, and the other part of the limiting component 3 is provided outside the device. The limiting component 3 can prevent the push rod 102 from rotating. A dust-proof component 4 for dust removal is also provided inside the mounting seat 2. The number of mounting seats 2 corresponds to the number of limiting components 3 one by one. There are five mounting seats 2 and limiting components 3 in total. The number of mounting seats 2 and limiting components 3 can increase with the formation of the push rod 102.

[0019] The mounting seat 2 is composed of an annular block plus two lugs. The number of mounting seats 2 corresponds to the number of limiting components 3. The number and distribution of the mounting seats 2 increase with the increase in the length and working intensity of the push rod 102. One section of the telescopic tube 302 is fixedly connected to one side of each mounting seat 2 close to the cylinder block 101. An end cap 303 is fixedly provided at the end of the push rod 102. The shape of the end cap 303 is the same as that of the mounting seat 2. The lugs on both sides of the end cap 303 are fixedly connected to the telescopic tube 302. A limiting block 304 is fixedly provided at the lower end of the mounting seat 2. The size and arrangement of the limiting block 304 are the same as those of the telescopic tube 302.

[0020] The limiting component 3 includes a chute 301 which is opened on the outer surface of the mounting base 2. There are four groups of chutes 301 in total, and the chutes 301 are symmetrically arranged along the center line of the mounting base 2. Telescopic tubes 302 are fixedly arranged at the lifting lugs on both sides of the mounting base 2. The size of the telescopic tube 302 gradually decreases from the cylinder block 101 to the push rod 102. The number of the telescopic tubes 302 is proportional to the number of the mounting bases 2. The dust-proof component 4 includes a mounting ring 401 which is located on the inner side of the mounting base 2 and close to one side of the push rod 102. The mounting ring 401 is fixedly connected with the mounting base 2. A plurality of scraping strips 402 are fixedly arranged on the inner wall of the mounting ring 401. The scraping strips 402 are inclined. The inner wall of the scraping strips 402 is slidably connected with the push rod 102.

[0021] The limiting component 3 further includes a bracket 307 which does not contact with the servo cylinder body 1. The bracket 307 can be installed on the ground or the mounting frame of the adjacent equipment. A slide rail 308 is fixedly arranged at the upper end of the bracket 307. The size and the number of the slide rail 308 are the same as those of the chute 301. The slide rail 308 is slidably connected with the chute 301. A clamping groove 309 is opened in the middle of the bracket 307. The size and the arrangement mode of the clamping groove 309 correspond to those of the limiting block 304. A limiting column 310 is slidably arranged on both sides of the clamping groove 309. A spring is arranged at one end of the limiting column 310 close to the inside of the bracket 307. The limiting column 310 is slidably connected with the jack 305. The size and the size distribution of the limiting column 310 are the same as those of the jack 305.

[0022] The limiting block 304 is hollow and trapezoidal. Jacks 305 are opened on both sides of the limiting block 304. The size of the jack 305 is proportional to the size of the limiting block 304. Plug blocks 306 are fixedly arranged on one side of the limiting block 304 close to the cylinder block 101. There is no plug block 306 on one side of the cylinder block 101. The plug block 306 can be slidably connected with the limiting block 304. The size and the arrangement mode of the plug block 306 are the same as those of the jack 305.

[0023] A plurality of through holes 403 are opened on the inner wall of the mounting ring 401. The mounting ring 401 is hollow. The opening of the mounting ring 401 is close to one side of the push rod 102. A liquid storage cavity 404 is opened through the mounting base 2 on one side of the mounting ring 401 close to the cylinder block 101. The inside of the liquid storage cavity 404 is filled with lubricating oil.

[0024] A plurality of blocking blocks 405 are fixedly arranged on one side of the liquid storage cavity 404 close to the mounting ring 401. Tenons 406 are fixedly arranged on one side of the blocking block 405 located outside the liquid storage cavity 404. A cloth strip 407 is arranged on the outer surface of the blocking block 405.

[0025] The cloth strip 407 is slidably connected to the tenon 406. A baffle 408 is provided on the other side of the cloth strip 407. The baffle 408 can cooperate with the tenon 406 to fix the cloth strip 407. The lower end of the cloth strip 407 is used for slidable connection with the push rod 102. A cover plate 409 is provided on the side of the liquid storage cavity 404 away from the stopper 405. There are two cover plates 409 in total.

[0026] The working principle and usage process of the present invention: When using the servo electric cylinder, as the push rod 102 extends, all the mounting seats 2 installed on its surface will move together. When each mounting seat 2 moves to the corresponding bracket 307, the limit post 310 is inserted into the jack 305 to fix the corresponding mounting seat 2. At this time, this mounting seat 2 no longer moves with the push rod 102. When the mounting seat 2 is fixed to the bracket 307, the limit block 304, the card slot 309, the limit post 310, and the slide rail 308 and the slide groove 301 cooperate with each other to firmly fix the mounting seat 2. At the same time, the telescopic tubes 302 on both sides of the push rod 102 play an anti-rotation role. The cooperation between the mounting seat 2 and the bracket 307 increases the supporting force for the telescopic tubes 302 to prevent the push rod 102 from rotating during operation. When retracting, the push rod 102 moves first until the insertion block 306 is inserted into the limit block 304, pushing out the limit post 310, and under the pulling force of the push rod 102, finally disengaging from the limit block 304, and the corresponding mounting seat 2 is unlocked and moves with the push rod 102. When the mounting seat 2 moves in place, it moves relative to the push rod 102. At this time, as the push rod 102 moves, the cloth strip 407 applies the engine oil in the liquid storage cavity 404 to the surface of the push rod 102 for lubrication. When the push rod 102 retracts, the scraping strip 402 scrapes off part of the lubricating oil carrying impurities and dust, causing it to remain on the surface of the scraping strip 402 or directly fall off, preventing dust from entering the inside of the cylinder block 101. It should be noted that when retracting, the two mounting seats 2 are in contact, and the inclined surface outside the cover plate 409 squeezes the scraping strip 402 to deform it, pushing the lubricating oil and impurities remaining on the surface of the scraping strip 402 together towards the mounting ring 401 and discharging them as the impurities increase.

[0027] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A long-stroke servo electric cylinder with both dust-proof and anti-rotation functions, comprising a servo electric cylinder body (1), characterized in that: The servo electric cylinder body (1) is mainly divided into two parts, namely a cylinder body (101) and a push rod (102). A mounting seat (2) is arranged on one side of the cylinder body (101) close to the push rod (102). If one of the mounting seats (2) is always fixedly connected to the cylinder body (101), a limit assembly (3) is arranged on one side of the cylinder body (101) close to the mounting seat (2). The limit assembly (3) has two parts, one part of which is arranged on the mounting seat. (2) and the push rod (102), another part of the limit assembly (3) is arranged outside the device, the limit assembly (3) can prevent the push rod (102) from rotating, and a dustproof assembly (4) for dust removal is also arranged inside the mounting seat (2), the number of the mounting seats (2) and the limit assemblies (3) corresponds one to one, and the mounting seats (2) and the limit assemblies (3) are arranged in five in total, and the number of the mounting seats (2) and the limit assemblies (3) can increase with the increase of the number of push rods (102).

2. According to claim 1, a long-stroke servo electric cylinder with both dust-proof and anti-rotation functions is characterized in that: The mounting seat (2) is composed of an annular block and two lifting ears. The number of the mounting seats (2) corresponds to the number of the limiting assemblies (3). The number and distribution of the mounting seats (2) increase with the increase of the length and working intensity of the push rod (102). A section of the telescopic tube (302) is fixedly connected to one side of the mounting seat (2) close to the cylinder body (101). An end cover (303) is fixedly provided at the end of the push rod (102). The shape of the end cover (303) is consistent with that of the mounting seat (2). The lifting ears on both sides of the end cover (303) are fixedly connected to the telescopic tube (302). A limiting block (304) is fixedly provided at the lower end of the mounting seat (2). The size arrangement of the limiting block (304) is consistent with that of the telescopic tube (302).

3. The long-stroke servo electric cylinder with both dust-proof and anti-rotation functions according to claim 1, characterized in that: The limit assembly (3) comprises a slide groove (301), the slide groove (301) being provided on the outer surface of the mounting seat (2), and a total of four groups of the slide grooves (301) being provided, the slide grooves (301) being symmetrically arranged along the center line of the mounting seat (2), and telescopic tubes (302) being fixedly arranged at the lifting ears on both sides of the mounting seat (2), the size of the telescopic tubes (302) gradually decreasing from the cylinder body (101) to the push rod (102), and the number of the telescopic tubes (302) being The dustproof component (4) is proportional to the number of the mounting seats (2), the mounting ring (401) comprising a mounting ring (401), the mounting ring (401) being located on the inner side of the mounting seat (2) close to the push rod (102), the mounting ring (401) being fixedly connected to the mounting seat (2), a plurality of scraping strips (402) being fixedly arranged on the inner wall of the mounting ring (401), the scraping strips (402) being arranged in an inclined manner, and the inner wall of the scraping strip (402) being slidably connected to the push rod (102).

4. The long-stroke servo electric cylinder with both dust-proof and anti-rotation functions according to claim 1, characterized in that: The limit assembly (3) further comprises a bracket (307), wherein the bracket (307) does not contact the servo electric cylinder body (1), and the bracket (307) can be mounted on the ground or on a mounting frame of an adjacent device. A slide rail (308) is fixedly arranged at the upper end of the bracket (307), and the size and number of the slide rail (308) and the slide slot (301) are consistent, and the slide rail (308) is slidably connected to the slide slot (301). A slot (309) is provided in the middle of the bracket (307), and the size and arrangement of the slot (309) and the limit block (304) correspond. Limiting posts (310) are slidably arranged on both sides of the slot (309), and a spring is arranged at one end of the limiting post (310) close to the inside of the bracket (307). The limiting post (310) is slidably connected to the socket (305), and the size and size distribution of the limiting post (310) are consistent with those of the socket (305).

5. The long-stroke servo electric cylinder with both dust-proof and anti-rotation functions according to claim 4, characterized in that: The limit block (304) is hollow and trapezoidal. Both sides of the limit block (304) are provided with plug holes (305). The size of the plug holes (305) is proportional to the size of the limit block (304). A plug block (306) is fixedly provided on one side of the limit block (304) close to the cylinder body (101). The plug block (306) is not provided on one side of the cylinder body (101). The plug block (306) can be slidably connected to the limit block (304). The size of the plug block (306) is arranged in the same manner as the size of the plug hole (305).

6. The long-stroke servo electric cylinder with both dust-proof and anti-rotation functions according to claim 3, characterized in that: The inner wall of the mounting ring (401) is provided with a plurality of through holes (403); the mounting ring (401) is hollow; the opening of the mounting ring (401) is close to a side of the push rod (102); a liquid storage cavity (404) is provided on a side of the mounting ring (401) close to the cylinder body (101) through a mounting seat (2); the interior of the liquid storage cavity (404) is filled with lubricating oil.

7. The long-stroke servo electric cylinder with both dust-proof and anti-rotation functions according to claim 6, characterized in that: A plurality of stoppers (405) are fixedly provided on one side of the liquid storage cavity (404) close to the mounting ring (401), a tenon (406) is fixedly provided on one side of the stoppers (405) outside the liquid storage cavity (404), and a cloth strip (407) is provided on the outer surface of the stoppers (405).

8. The long-stroke servo electric cylinder with both dust-proof and anti-rotation functions according to claim 7, characterized in that: The cloth strip (407) is slidably connected to the tenon (406), a baffle (408) is provided on the other side of the cloth strip (407), and the baffle (408) can cooperate with the tenon (406) to fix the cloth strip (407), the lower end of the cloth strip (407) is used for slidably connecting to the push rod (102), and a cover plate (409) is provided on the side of the liquid storage chamber (404) away from the stop block (405), and two cover plates (409) are provided in total.

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