A cylinder stroke limiting mechanism

Abstract

The utility model discloses a kind of cylinder stroke limiting mechanism, it is related to cylinder technical field.The utility model cylinder includes cylinder body, guide rod and piston rod, the end of guide rod and piston rod is connected on a movable plate;Stroke limiting mechanism includes a limiting plate, and the avoiding hole for the guide rod and piston rod passing through is set on limiting plate;Limiting plate is located between movable plate and cylinder body, and the distance between limiting plate and cylinder body is adjustable;Cylinder body is fixed on a base;Limiting plate is fixed on base by connecting structure.The utility model over set a position adjustable limiting plate to mechanically block the movable plate synchronous with piston rod, to realize the hard limiting of cylinder extension stroke, the setting of limiting plate independent of cylinder body, the limiting mode without any modification to cylinder body, strong universality, stroke adjustment range is big, and simple structure, limiting is reliable.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder technology, and in particular relates to a cylinder stroke limiting mechanism. Background Technology

[0002] A cylinder is a pneumatic actuator that converts the pressure energy of compressed gas into mechanical energy in pneumatic transmission. A common cylinder typically consists of a cylinder barrel, a piston, and a piston rod. This type of cylinder has two chambers, providing a linear reciprocating stroke. For example, CN214661214U discloses a device for adjusting cylinder stroke, comprising: a plastic tube with a hollow cavity; and a metal nut with internal threads, coaxial with the hollow cavity and embedded and fixed at one end of the hollow cavity. The cylinder equipped with this device for adjusting cylinder stroke has the following problems in use: First, the stroke adjustment range of the cylinder is limited by the length of the threaded structure at the end of the piston rod; second, this solution involves modifying the cylinder body, and cannot be directly applied to standard cylinders without pre-machined threaded structures, resulting in poor versatility, and the modification process is complex and not conducive to quickly and flexibly adjusting the stroke according to actual working conditions. Utility Model Content

[0003] The purpose of this utility model is to provide a cylinder stroke limiting mechanism, which mechanically blocks the movable plate that moves synchronously with the piston rod by setting an adjustable limiting plate, thereby achieving a hard limit on the cylinder extension stroke and solving the problems raised in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model relates to a cylinder stroke limiting mechanism. The cylinder includes a cylinder body, a guide rod, and a piston rod, the ends of which are connected to a movable plate. The stroke limiting mechanism includes a limiting plate with clearance holes for the guide rod and piston rod to pass through. The limiting plate is located between the movable plate and the cylinder body, and the distance between the limiting plate and the cylinder body is adjustable. The cylinder body is fixed to a base. The limiting plate is fixed to the base via a connecting structure.

[0006] Furthermore, the connecting structure includes bosses fixed on the bases on both sides of the cylinder body, and insertion holes are provided on the end faces of the bosses; the two ends of the limiting plate are respectively connected to insertion rods inserted into the insertion holes, and locking bolts are provided on the bosses to fix the insertion rods inserted into the insertion holes, thereby realizing stepless adjustment and reliable locking of the position of the limiting plate, and changing the position of the limiting plate by changing the insertion depth of the insertion rod.

[0007] Furthermore, the other end of the boss is threadedly connected to an adjusting screw that extends into the insertion hole. When the adjusting screw is screwed in, it will press against the end of the insertion rod to prevent the insertion rod from being displaced due to vibration or impact when the cylinder is working.

[0008] Furthermore, the connection structure includes L-shaped connecting plates disposed at both ends of the limiting plate, and the L-shaped connecting plates are provided with rectangular holes; rectangular channels that cooperate with the L-shaped connecting plates are respectively opened on the bases located on both sides of the cylinder body, and fastening bolts are threaded onto the rectangular channels; the L-shaped connecting plates can slide continuously in the rectangular channels to meet the needs of large-range rapid coarse adjustment, and are tightened by bolts after adjustment, thus combining flexibility and stability.

[0009] Furthermore, the limiting plate is provided with a rubber layer, a wooden pad layer, or a plastic layer on the side near the movable plate; a buffer layer is provided on its contact surface to effectively buffer and absorb the impact force and noise generated when the movable plate collides with the limiting plate, protecting the movable plate, the limiting plate, and the entire mechanism, avoiding direct hard collisions between metal parts, and improving the service life of the equipment and the comfort of the working environment.

[0010] This utility model has the following beneficial effects:

[0011] This utility model mechanically blocks the movable plate that moves synchronously with the piston rod by setting an adjustable limit plate, thereby achieving a hard limit on the cylinder extension stroke. The limit plate is set independently of the cylinder body and does not require any modification to the cylinder body. It has strong versatility, a large stroke adjustment range, simple structure, and reliable limiting.

[0012] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the cylinder stroke limiting mechanism of this utility model. Figure 1 ;

[0015] Figure 2 for Figure 1 Left-hand diagram;

[0016] Figure 3 This is a schematic diagram of the cylinder stroke limiting mechanism of this utility model. Figure 2 ;

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 1-Cylinder body, 2-Base, 10-Piston rod, 11-Moving plate, 12-Guide rod, 20-Rectangular channel, 201-Fixing bolt, 21-Boss, 22-Insertion hole, 23-Adjusting screw, 24-Locking bolt, 25-Limiting plate, 26-Insertion rod, 28-L-shaped connecting plate, 281-Rectangular hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Please see Figure 1-2 This utility model is a cylinder stroke limiting mechanism. The cylinder includes a cylinder body 1, a guide rod 12, and a piston rod 10. The ends of the guide rod 12 and the piston rod 10 are both connected to a movable plate 11. The stroke limiting mechanism includes a limiting plate 25 located between the cylinder body 1 and the movable plate 11. The limiting plate 25 has clearance holes for the guide rod 12 and the piston rod 10 to pass through. At this time, the stroke range of the cylinder is limited by the limiting plate 25. During installation, the cylinder body 1 is firmly installed on a rigid base 2 by bolts, and the limiting plate 25 is fixed to the base 2 by a connecting structure.

[0022] Specifically, two installation methods are provided below.

[0023] Method 1: For example Figure 1 and 2The connecting structure includes bosses 21 fixed on the bases 2 on both sides of the cylinder body 1, and insertion holes 22 are provided on the end faces of the bosses 21; the two ends of the limiting plate 25 are respectively connected to insertion rods 26 inserted into the insertion holes 22, and the bosses 21 are provided with locking bolts 24 to fix the insertion rods 26 inserted into the insertion holes 22. In use, the stroke range of the cylinder is adjusted by adjusting the depth of insertion of the insertion rods 26 into the insertion holes 22. When the insertion rods 26 are inserted into the insertion holes 22 to the corresponding depth, the locking bolts 24 are locked.

[0024] To prevent the insertion rod 26 from shifting within the insertion hole 22 due to vibration or impact during long-term use, an adjusting screw 23 extending into the insertion hole 22 is threadedly connected to the other end of the boss 21.

[0025] Method 2: For example Figure 3 The connecting structure includes L-shaped connecting plates 28 disposed at both ends of the limiting plate 25, and rectangular holes 281 disposed on the L-shaped connecting plates 28; rectangular channels 20 that cooperate with the L-shaped connecting plates 28 are respectively opened on the bases 2 on both sides of the cylinder body 1, and fastening bolts 201 are threadedly connected to the rectangular channels 20. When the fastening bolts 201 are screwed in from the top of the rectangular channels 20, their bottoms press against the horizontal edge of the L-shaped connecting plates 28, thereby firmly locking the limiting plate 25 onto the base 2.

[0026] It is understood that in this invention, the limiting plate 25 is provided with a rubber layer, a wood pad layer or a plastic layer as a buffer layer on the side near the movable plate 11, so as to further protect the mechanism and reduce noise.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cylinder stroke limiting mechanism, characterized in that: The cylinder includes a cylinder body (1), a guide rod (12) and a piston rod (10), the ends of the guide rod (12) and the piston rod (10) are both connected to a movable plate (11); The travel limiting mechanism includes a limiting plate (25), and the limiting plate (25) has a clearance hole for the guide rod (12) and the piston rod (10) to pass through; The limiting plate (25) is located between the movable plate (11) and the cylinder (1), and the distance between the limiting plate (25) and the cylinder (1) is adjustable.

2. The cylinder stroke limiting mechanism according to claim 1, characterized in that, The cylinder (1) is fixed on a base (2); The limiting plate (25) is fixed to the base (2) by a connecting structure.

3. The cylinder stroke limiting mechanism according to claim 2, characterized in that, The connection structure includes a boss (21) fixed on the base (2) on both sides of the cylinder (1), and an insertion hole (22) is provided on the end face of the boss (21). The two ends of the limiting plate (25) are respectively connected to the insertion rod (26) inside the insertion hole (22), and the boss (21) is provided with a locking bolt (24) to fix the insertion rod (26) inside the insertion hole (22).

4. The cylinder stroke limiting mechanism according to claim 3, characterized in that, The other end of the boss (21) is threaded to an adjusting screw (23) that extends into the insertion hole (22).

5. A cylinder stroke limiting mechanism according to claim 2, characterized in that, The connection structure includes L-shaped connecting plates (28) set at both ends of the limiting plate (25), and rectangular holes (281) are provided on the L-shaped connecting plates (28); rectangular channels (20) that cooperate with the L-shaped connecting plates (28) are respectively opened on the bases (2) located on both sides of the cylinder (1), and fastening bolts (201) are threaded on the rectangular channels (20).

6. The cylinder stroke limiting mechanism according to claim 1, characterized in that, The limiting plate (25) is provided with a rubber layer, a wooden pad layer or a plastic layer on the side near the movable plate (11).

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