Small compact split shaft force multiplying cylinder

Abstract

The utility model provides a small compact split axle force multiplication cylinder, include: force multiplication stack cylinder is set in the base pressure output cylinder top through bolted connection stack, the sealed top 3 are equipped with in the top of force multiplication stack cylinder far from the base pressure output cylinder 1 side through bolted connection cover, need 3 times force when using compression air to enter the chamber of base output cylinder and the following 2 force multiplication stack cylinders simultaneously, it is to explain that each force multiplication stack cylinder has a single gas path, the force multiplication piston in this 2 cylinder bodies moves downward under the action of air pressure, promotes respective force multiplication axle. Force passes through the contact of axle end surface, transmits from top to bottom in proper order, finally passes through the output axle and exports outward, realizes standard 3 times output force, the force multiplication stack cylinder which is not activated in the use process does not ventilate, and the force multiplication piston and force multiplication axle in its cylinder are in the stationary state. Since it is split axle design, the lower force multiplication axle shaft is out of contact when doing the pushing movement, and there is no energy loss.

Description

Technical Field

[0001] This utility model relates to the field of cylinder design, and in particular to the field of compact split-shaft force-multiplying cylinder design technology, specifically a small and compact split-shaft force-multiplying cylinder. Background Technology

[0002] A multi-stage cylinder is a type of cylinder composed of multiple stacked pistons, which increases the output force by a factor of two. It has the advantage of high output force and is suitable for oil-free operation with short stroke and high output.

[0003] Currently, the multiplier cylinders on the market are usually single-axis multiplier cylinders. Their structure mainly includes multiple air chamber units connected in series. Each air chamber unit has a piston. All pistons are fixed on the same piston rod. During operation, multiple pistons drive the piston rod to move synchronously to increase the output force.

[0004] In actual use, if a 4-cylinder 4x force cylinder is selected for the above-mentioned single-shaft multi-chamber unit design, and only 3x force is needed for output, the piston in the 4th cylinder will rub against the shaft while the first 3 cylinders are running and the 4th cylinder is not working, causing some energy loss. As a result, the output force will not reach the standard 3x force cylinder output force. Summary of the Invention

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a small and compact split-shaft force-multiplying cylinder to solve the difficulties of the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a small, compact split-shaft force-multiplying cylinder, comprising:

[0007] Base-supported pressure output cylinder 1;

[0008] The multiplier stacking cylinder 2 is stacked on top of the base pressure output cylinder 1 by bolt connection;

[0009] A sealing top cover 3 is bolted to the top of the multiplier stacking cylinder 2 on the side away from the base pressure output cylinder 1.

[0010] According to the preferred embodiment, the base-bearing pressure output cylinder 1 includes:

[0011] The base 11 has a sealing groove 12 on its top. The sealing groove 12 has two sections, an upper section and a lower section. The diameter of the upper section of the sealing groove 12 is larger than the inner diameter of the lower section. A reinforcing cover plate 13 is fitted inside the upper section of the sealing groove 12. The base 11 has a shaft outlet hole in the center.

[0012] Output cylinder 14, which is bolted to the top of base 11, and a hollow output cylinder chamber 15 is provided in the center of output cylinder 14;

[0013] Output bottom cover 16, which is located at the top of the output cylinder body 14 and is interference-fitted onto the top of the output cylinder chamber 15;

[0014] The output shaft 17 is inserted in the center of the output cylinder 14. The top of the output shaft 17 passes through the bottom of the output bottom cover 16 and then passes through the shaft hole and the reinforcing cover plate 13 in sequence, extending straight away from the output cylinder 14.

[0015] Output piston 18, the output piston 18 is disposed outside the output shaft 17, and the output piston 18 is located inside the output cylinder chamber 15;

[0016] Output copper sleeve 19, the output copper sleeve 19 is located between the output shaft 17 and the output shaft hole, and the output copper sleeve 19 is stuck in the output shaft hole;

[0017] A sealing cover plate 110 is fitted onto the bottom of the output shaft 17. The sealing cover plate 110 is located at the bottom end of the reinforcing cover plate 13 and is disposed in the lower section of the sealing groove 12.

[0018] According to the preferred embodiment, output sealing grooves are provided on the four sides of the output bottom cover 16 and the reinforcing cover plate 13, and an output cover sealing ring 111 is fitted inside the output sealing groove 12.

[0019] According to the preferred embodiment, the multiplier stacking cylinder 2 includes:

[0020] A multiplier cylinder body 21 is provided, and several multiplier cylinder bodies 21 are stacked on the top of the output cylinder body 14 by bolt connection. The multiplier cylinder bodies 21 are connected to each other by bolts. A hollow multiplier cylinder chamber 22 is provided in the center of the multiplier cylinder body 21.

[0021] Split cover plate 23, which is installed on the top of the multiplier cylinder body 21;

[0022] Through-shaft hole 24, the through-shaft hole 24 is opened in the center of the bottom of the multiplier cylinder body 21, and a split copper sleeve 25 is inserted in the through-shaft hole 24;

[0023] The force multiplier shaft 26 is located at the bottom center of the force multiplier cylinder body 21 and is fitted inside the split copper sleeve 25. The top of the force multiplier shaft 26 extends vertically upward through the split cover plate 23. A force multiplier piston 27 is provided on the outside of the force multiplier shaft 26 and is located inside the force multiplier cylinder chamber 22.

[0024] According to the preferred embodiment, the top of the output shaft 17 is engaged within the split copper sleeve 25 and contacts the force multiplier shaft 26.

[0025] According to the preferred embodiment, the length of the output shaft 17 is greater than the length of the force-multiplying shaft 26.

[0026] According to the preferred embodiment, the output piston 18 and the power-multiplying piston 27 are respectively provided with piston rings 4 between the output cylinder chamber 15 and the power-multiplying cylinder chamber 22.

[0027] According to the preferred embodiment, the reinforcing cover plate 13, the sealing cover plate 110, the output bottom cover 16, and the split cover plate 23 are provided with dustproof grooves on the side near the output shaft 17 or the multiplier shaft 26, and dustproof rings 5 ​​are inserted in the dustproof grooves.

[0028] According to the preferred embodiment, the sealing top cover 3 is placed on the top of the multiplier stacking cylinder 2 on the side away from the base pressure output cylinder 1. The sealing top cover 3 is sleeved on the outside of the multiplier shaft 26. Bolts 31 are inserted around the top of the sealing top cover 3. The bottom of the bolts 31 passes through the sealing top cover 3 and is connected to the multiplier cylinder body 21.

[0029] This invention employs a base-supported pressure output cylinder, a force-multiplying stacked cylinder, and a sealed top cover. When 3 times the force is required, compressed air simultaneously enters the chambers of the base output cylinder and the two lower force-multiplying stacked cylinders. It should be noted that each force-multiplying stacked cylinder has a separate air passage. The force-multiplying pistons within these two cylinders move downwards under air pressure, pushing their respective force-multiplying shafts. The force is transmitted sequentially from top to bottom through the contact of the shaft end faces, ultimately being output outwards through the output shaft, achieving the standard 3 times output force. During use, the unused force-multiplying stacked cylinders are not vented, and their force-multiplying pistons and shafts remain stationary. Because it is a split-shaft design, the lower force-multiplying shaft disengages from it during pushing motion; therefore, the piston within this cylinder does not experience sliding friction, resulting in no energy loss.

[0030] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0031] Figure 1 The diagram shown is a schematic representation of the internal structure of this utility model.

[0032] Figure 2 This is a top view of the present invention;

[0033] Figure 3 The diagram shown is an enlarged view of the base portion in this utility model;

[0034] Figure 4 The diagram shown is an enlarged schematic of the seat-bearing pressure output cylinder of this utility model;

[0035] Figure 5 The diagram shown is an enlarged schematic of the multiplier stacking cylinder in this utility model;

[0036] Label Explanation

[0037] 1. Base-supported pressure output cylinder;

[0038] 11. Base; 12. Sealing groove; 13. Reinforcing cover plate; 14. Output cylinder body; 15. Output cylinder chamber; 16. Output bottom cover; 17. Output shaft; 18. Output piston; 19. Output copper sleeve; 110. Sealing cover plate; 111. Output cover sealing ring;

[0039] 2. Power-multiplying stacking cylinder;

[0040] 21. Power-operated cylinder block; 22. Power-operated cylinder chamber; 23. Split cover plate; 24. Through shaft hole; 25. Split brass sleeve; 26. Power-operated shaft; 27. Power-operated piston;

[0041] 3. Sealing top cover; 31. Bolts;

[0042] 4. Piston rings;

[0043] 5. Dustproof ring; Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0045] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0046] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0047] This invention proposes a small, compact split-shaft force multiplier cylinder for use in the design and manufacturing of force multiplier cylinders. This invention solves the problem of energy loss caused by piston friction when some cylinder units are not working in traditional single-shaft force multiplier cylinders through split-shaft design.

[0048] In general, the small and compact split-shaft force-multiplying cylinder proposed in this utility model mainly includes: a base-bearing pressure output cylinder 1, a force-multiplying stacking cylinder 2, and a sealed top cover 3. (See also...) Figure 1 This illustrates the internal structure of the present technical solution.

[0049] The small, compact, split-shaft force-multiplying cylinder proposed in this invention requires compressed air to simultaneously enter the base output cylinder and the chambers of the two lower force-multiplying stacked cylinders when 3 times the force is needed. It should be noted that each force-multiplying stacked cylinder has a separate air passage. The force-multiplying pistons within these two cylinders move downwards under air pressure, pushing their respective force-multiplying shafts. The force is transmitted sequentially from top to bottom through the contact of the shaft end faces, and is finally output outwards through the output shaft, achieving the standard 3 times output force. During use, the unused force-multiplying stacked cylinders are not vented, and their force-multiplying pistons and shafts remain stationary. Due to its split-shaft design, the lower force-multiplying shaft disengages from the cylinder during pushing motion and does not drive it. Therefore, the piston within the cylinder does not experience sliding friction, resulting in no energy loss. Furthermore, this technical solution does not have a base for the force-multiplying stacked cylinders; instead, it uses an embedded split cover plate. The supporting force mainly relies on the force-multiplying cylinder body connected to the split cover plate, which reduces the size of the force-multiplying cylinder without affecting its strength.

[0050] The aforementioned base-supported pressure output cylinder 1 includes: a base 11, an output cylinder body 14, an output bottom cover 16, an output shaft 17, an output piston 18, an output copper sleeve 19, and a sealing cover plate 110. The base 11 has a sealing groove 12 at its top, which has upper and lower sections. The diameter of the upper section of the sealing groove 12 is larger than the inner diameter of the lower section. The reinforcing cover plate 13 and the sealing cover plate 110 installed within the upper and lower sections of the sealing groove 12 form a labyrinth structure for sealing. An output shaft hole is opened in the center of the base 11. The output cylinder body 14 is bolted to the top of the base 11. A hollow output cylinder chamber 15 is located in the center of the output cylinder body 14. The output bottom cover 16 is located at the top of the output cylinder body 14 and is interference-fitted onto the top of the output cylinder chamber 15. An output shaft 17 is inserted through the center. The top of the output shaft 17 passes through the bottom of the output cover 16, the bottom of the output shaft hole, and the reinforcing cover plate 13, extending straight away from the output cylinder body 14. An output piston 18 is set on the outside of the output shaft 17 and is located in the output cylinder chamber 15. An output copper sleeve 19 is located between the output shaft 17 and the output shaft hole and is locked in the output shaft hole. A sealing cover plate 110 is fitted at the bottom of the output shaft 17. The sealing cover plate 110 is located at the bottom of the reinforcing cover plate 13 and is set in the lower sealing groove 12. Output sealing grooves are opened on the four sides of the output bottom cover 16 and the reinforcing cover plate 13. An output cover sealing ring 111 is locked in the output sealing groove 12. The base 11 is set in conjunction with the reinforcing cover plate 13 to prevent the output cylinder body 14 from deforming.

[0051] The aforementioned multiplier stack cylinders 2 are stacked on top of the output cylinder of the base via bolt connections. The multiplier stack cylinder 2 includes: a multiplier cylinder body 21, a split cover plate 23, a through-shaft hole 24, and a multiplier shaft 26. Several multiplier cylinder bodies 21 are provided, and these are stacked on top of the output cylinder body 14 via bolt connections. The multiplier cylinder bodies 21 are connected to each other via bolts. A hollow multiplier cylinder chamber 22 is located in the center of each multiplier cylinder body 21. A split cover plate 23 is installed on the top of the multiplier cylinder body 21, and the through-shaft hole 24 is open. A split copper sleeve 25 is installed in the center of the bottom of the multiplier cylinder body 21, and a multiplier shaft 26 is installed in the split copper sleeve 25. The top of the multiplier shaft 26 extends vertically upward through the split cover plate 23. A multiplier piston 27 is installed on the outside of the multiplier shaft 26 and is located in the multiplier cylinder chamber 22. The top of the output shaft 17 is installed in the split copper sleeve 25 and contacts the multiplier shaft 26 to realize the transmission of multiplier force. The length of the output shaft 17 is greater than the length of the multiplier shaft 26.

[0052] The aforementioned output piston 18 and power-multiplying piston 27 are respectively provided with piston rings 4 between the output cylinder chamber 15 and the power-multiplying cylinder chamber 22. The sealing cover plate 110, the output bottom cover 16, and the split cover plate 23 are provided with dustproof grooves on the side near the output shaft 17 or the power-multiplying shaft 26. The dustproof grooves are fitted with dustproof rings 5. The sealing top cover 3 is placed on the top of the power-multiplying stacked cylinder 2 on the side away from the base pressure-bearing output cylinder 1. The sealing top cover 3 is sleeved on the outside of the power-multiplying shaft 26. Bolts 31 are passed through the top of the sealing top cover 3 around the perimeter. The bottom of the bolts 31 passes through the sealing top cover 3 and is connected to the power-multiplying cylinder body 21.

[0053] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A small, compact, split-shaft force-multiplying cylinder, characterized in that, include: Base-supported pressure output cylinder (1); A multiplier stacking cylinder (2) is stacked on top of the base pressure output cylinder (1) by bolt connection; A sealing top cover (3) is bolted to the top of the multiplier stacking cylinder (2) on the side away from the base pressure output cylinder (1); The base-bearing pressure output cylinder (1) includes: The base (11) has a sealing groove (12) on its top. The sealing groove (12) has two sections, the upper section of the sealing groove (12) has a groove diameter larger than the inner diameter of the lower section of the sealing groove (12). A reinforcing cover plate (13) is installed in the upper section of the sealing groove (12). The base (11) has an outlet hole in the center. Output cylinder (14), the output cylinder (14) is bolted to the top of the base (11), and a hollow output cylinder chamber (15) is provided in the center of the output cylinder (14). Output bottom cover (16), the output bottom cover (16) is located at the top of the output cylinder body (14) and is interference-fitted onto the top of the output cylinder chamber (15); The output shaft (17) is inserted in the center of the output cylinder (14). The top of the output shaft (17) passes through the output bottom cover (16) and the bottom passes through the shaft hole and the reinforcing cover plate (13) in sequence, extending straight away from the output cylinder (14). Output piston (18), the output piston (18) is disposed outside the output shaft (17), the output piston (18) is located inside the output cylinder chamber (15); Output copper sleeve (19), the output copper sleeve (19) is located between the output shaft (17) and the output shaft hole, and the output copper sleeve (19) is stuck in the output shaft hole; A sealing cover (110) is fitted onto the bottom of the output shaft (17). The sealing cover (110) is located at the bottom end of the reinforcing cover (13) and is set in the lower section of the sealing groove (12). Output sealing grooves are provided on the four sides of the output bottom cover (16) and the reinforcing cover plate (13), and an output cover sealing ring (111) is installed in the output sealing groove (12). The multiplier stacking cylinder (2) includes: A multiplier cylinder (21) is provided, and several multiplier cylinders (21) are stacked on the top of the output cylinder (14) by bolt connection. The multiplier cylinders (21) are connected to each other by bolt. A hollow multiplier cylinder chamber (22) is provided in the center of the multiplier cylinder (21). Split cover plate (23), said split cover plate (23) is installed on the top of the multiplier cylinder body (21); Through shaft hole (24), the through shaft hole (24) is opened in the center of the bottom of the multiplier cylinder body (21), and a split copper sleeve (25) is installed in the through shaft hole (24). The multiplier shaft (26) is located in the center bottom of the multiplier cylinder body (21) and is installed in the split copper sleeve (25). The top of the multiplier shaft (26) extends vertically upward through the split cover plate (23). A multiplier piston (27) is provided on the outside of the multiplier shaft (26). The multiplier piston (27) is located in the multiplier cylinder chamber (22).

2. The small, compact, split-shaft force-multiplying cylinder according to claim 1, characterized in that, The top of the output shaft (17) is locked inside the split copper sleeve (25) and contacts the force multiplier shaft (26).

3. The small, compact, split-shaft force-multiplying cylinder according to claim 2, characterized in that, The length of the output shaft (17) is greater than the length of the force multiplier shaft (26).

4. The small, compact split-shaft force-multiplying cylinder according to claim 3, characterized in that, The output piston (18) and the power-multiplying piston (27) are provided with piston rings (4) between the output cylinder chamber (15) and the power-multiplying cylinder chamber (22).

5. The small, compact split-shaft force-multiplying cylinder according to claim 4, characterized in that, The sealing cover plate (110), the output bottom cover (16), and the split cover plate (23) have dustproof grooves on the side near the output shaft (17) or the multiplier shaft (26), and dustproof rings (5) are installed in the dustproof grooves.

6. The small, compact split-shaft force-multiplying cylinder according to claim 5, characterized in that, The sealing top cover (3) is placed on the top of the multiplier stacking cylinder (2) on the side away from the base pressure output cylinder (1). The sealing top cover (3) is sleeved on the outside of the multiplier shaft (26). Bolts (31) are inserted around the top of the sealing top cover (3). The bottom of the bolts (31) passes through the sealing top cover (3) and is connected to the multiplier cylinder body (21).

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