Combined hydraulic cylinder

Abstract

The utility model discloses a combined hydraulic cylinder, which relates to the technical field of hydraulic cylinders and comprises a first hydraulic cylinder and a second hydraulic cylinder, sleeves are fixedly mounted on the outer wall of the first hydraulic cylinder and the outer wall of the second hydraulic cylinder, and positioning blocks are symmetrically and fixedly mounted on the outer walls of the sleeves. During assembly, the first clamping rod is used for clamping the second hydraulic cylinder, the second clamping rod not only can be used for clamping other hydraulic cylinders, but also can be attached to the first hydraulic cylinder to reversely fix the first hydraulic cylinder, and in the process, the first hydraulic cylinder can be clamped by the second clamping rod, so that the second hydraulic cylinder can be clamped by the second clamping rod, and the second hydraulic cylinder can be clamped by the second clamping rod. The positioning feed block can determine the positions of the first clamping rod and the second clamping rod to ensure that the first hydraulic cylinder and the second hydraulic cylinder are not staggered, so that the multiple hydraulic cylinders can be quickly assembled and matched for use, and the position adjusting time is saved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to a combined hydraulic cylinder. Background Technology

[0002] A modular hydraulic cylinder is a type of hydraulic cylinder composed of multiple cylinders and components. It converts hydraulic energy into mechanical energy to achieve linear reciprocating motion.

[0003] For example, CN220791643U discloses a combined hydraulic cylinder, which includes a cylinder barrel and a piston rod. The piston rod is slidably connected inside the cylinder barrel. The hydraulic cylinder also includes a first connecting plate, a second connecting plate, and an oil pipe protection assembly. The first connecting plate is fixedly connected to the end of the cylinder barrel away from the piston rod. The second connecting plate is installed at the end of the piston rod away from the cylinder barrel. A connecting post is fixedly connected to the lower end of the second connecting plate. A first groove matching the connecting post is opened on the piston rod. Multiple fourth through holes are opened on the connecting post. Multiple fixing holes matching the fourth through holes are opened on the piston rod. A first threaded rod passes through the fixing holes and the fourth through holes. The oil pipe protection assembly is fixedly connected to one of the hydraulic cylinders. The oil pipe protection assembly is used to store the oil pipe of the hydraulic cylinder. The fixing holes include a third through hole and multiple second through holes. The third through hole is located on the central axis of the piston rod.

[0004] However, in the existing technology, when assembling multiple hydraulic cylinders, it is necessary to ensure that their piston rod structures are not misaligned. Traditional hydraulic cylinders lack a mutually fixing structure, which leads to the problem that multiple hydraulic cylinders cannot be used together during actual assembly. At this time, more time needs to be spent adjusting the position of the hydraulic cylinders, which is time-consuming and laborious. Utility Model Content

[0005] The purpose of this invention is to solve the problem that traditional hydraulic cylinders in the prior art lack a mutually fixed structure, which leads to the problem that multiple hydraulic cylinders cannot be used together during actual assembly. Therefore, a combined hydraulic cylinder is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a combined hydraulic cylinder, comprising a first hydraulic cylinder and a second hydraulic cylinder, wherein a sleeve is fixedly installed on the outer wall of both the first and second hydraulic cylinders, and positioning blocks are symmetrically fixedly installed on the outer wall of the sleeves. A first clamping rod is rotatably connected to one end of the positioning block on the outer wall of the first hydraulic cylinder, and one end of the first clamping rod overlaps the sleeve on the outer wall of the second hydraulic cylinder. A second clamping rod is rotatably connected to one end of the positioning block on the outer wall of the second hydraulic cylinder, and the second clamping rod is located below the first clamping rod.

[0007] Preferably, a mating protrusion is fixedly installed at one end of the first clamping rod and one end of the second clamping rod, and an arc-shaped notch is provided at the arc apex of the mating protrusion.

[0008] Preferably, the mating protrusion overlaps the outer wall of the sleeve through a set arc-shaped notch, and the lower surface of the first clamping rod overlaps the positioning block on the outer wall of the second hydraulic cylinder.

[0009] Preferably, both the interior of the first clamping rod and the interior of the second clamping rod are provided with through holes.

[0010] Preferably, a limiting rod is inserted into the inside of the through hole, and a pressure plate is fixedly connected between the two limiting rods.

[0011] Preferably, the lower surface of the pressure plate overlaps the upper surface of the first clamping rod, and the bottom of the limiting rod is provided with a threaded groove.

[0012] Preferably, the limiting rod is threadedly connected to a limiting nut through a threaded groove.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, a sleeve is provided on the outer wall of both the first and second hydraulic cylinders. First clamping rods are symmetrically distributed on both sides of the sleeve on the first hydraulic cylinder, and second clamping rods are distributed on both sides of the sleeve on the second hydraulic cylinder. During assembly, the first clamping rods are used to clamp the second hydraulic cylinder, and the second clamping rods can be used to clamp other hydraulic cylinders or attached to the first hydraulic cylinder to fix it in the opposite direction. During this process, the positioning block can determine the positions of the first and second clamping rods to ensure that there is no misalignment between the first and second hydraulic cylinders, thereby ensuring that multiple hydraulic cylinders can be quickly assembled and used together, saving time for position adjustment.

[0015] 2. In this utility model, two first clamping rods are fixed by a limiting rod. After the second clamping rod is attached to the first hydraulic cylinder, the limiting rod can pass through the through hole on the second clamping rod. Then, a limiting nut is installed on the threaded groove to limit the second clamping rod, so that the first hydraulic cylinder and the second hydraulic cylinder are assembled together. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of a combined hydraulic cylinder is provided for this utility model;

[0017] Figure 2 A top view of a combined hydraulic cylinder is provided for this utility model;

[0018] Figure 3This utility model provides a structural breakdown diagram of a combined hydraulic cylinder;

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram of part A.

[0020] Legend: 1. First hydraulic cylinder; 2. Second hydraulic cylinder; 3. Sleeve; 4. Positioning block; 5. First clamping rod; 6. Second clamping rod; 7. Connecting protrusion; 8. Pressure plate; 9. Limiting rod; 10. Through hole; 11. Threaded groove; 12. Limiting nut; 13. Arc-shaped notch. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a combined hydraulic cylinder, including a first hydraulic cylinder 1 and a second hydraulic cylinder 2. A sleeve 3 is fixedly installed on the outer wall of the first hydraulic cylinder 1 and the outer wall of the second hydraulic cylinder 2. A positioning block 4 is symmetrically fixedly installed on the outer wall of the sleeve 3. A first clamping rod 5 is rotatably connected to one end of the positioning block 4 on the outer wall of the first hydraulic cylinder 1. One end of the first clamping rod 5 is attached to the sleeve 3 on the outer wall of the second hydraulic cylinder 2. A second clamping rod 6 is rotatably connected to one end of the positioning block 4 on the outer wall of the second hydraulic cylinder 2. The second clamping rod 6 is located below the first clamping rod 5.

[0024] A mating protrusion 7 is fixedly installed at one end of the first clamping rod 5 and one end of the second clamping rod 6. An arc-shaped notch 13 is provided at the top of the arc of the mating protrusion 7. The mating protrusion 7 overlaps the outer wall of the sleeve 3 through the arc-shaped notch 13. The lower surface of the first clamping rod 5 overlaps the positioning block 4 on the outer wall of the second hydraulic cylinder 2.

[0025] The specific settings and functions of this embodiment are described in detail below. The first hydraulic cylinder 1 and the second hydraulic cylinder 2 have the same structure. When used in combination, the first clamping rod 5 on the outer wall of the first hydraulic cylinder 1 is rotated to overlap with the second hydraulic cylinder 2. Both the outer walls of the first hydraulic cylinder 1 and the second hydraulic cylinder 2 are provided with sleeves 3 for docking. The first clamping rod 5 is rotated to overlap with the sleeve 3 on the outer wall of the second hydraulic cylinder 2 and then stops. At this time, the first clamping rod 5 will overlap with the positioning block 4 of the sleeve 3.

[0026] The outer wall of the second hydraulic cylinder 2 is provided with a second clamping rod 6. The second clamping rod 6 can be used to clamp other hydraulic cylinders with the same structure as the first hydraulic cylinder 1, so as to assemble multiple hydraulic cylinders together. The following takes the assembly of only the first hydraulic cylinder 1 and the second hydraulic cylinder 2 as an example. After the assembly is completed, the second clamping rod 6 is rotated to fit against the outer wall of the first hydraulic cylinder 1, so as to achieve the purpose of fixing the first hydraulic cylinder 1 and the second hydraulic cylinder 2 to each other.

[0027] One end of the first clamping rod 5 and one end of the second clamping rod 6 are provided with a mating protrusion 7. The arc apex of the mating protrusion 7 is provided with an arc-shaped notch 13 that matches the shape of the sleeve 3 to ensure the stability of clamping.

[0028] Example 2: Figure 2 and Figure 3 As shown, both the interior of the first clamping rod 5 and the interior of the second clamping rod 6 are provided with through holes 10. Limiting rods 9 are inserted into the interior of the through holes 10. A pressure plate 8 is fixedly connected between the two limiting rods 9. The lower surface of the pressure plate 8 overlaps the upper surface of the first clamping rod 5. A threaded groove 11 is provided at the bottom of the limiting rod 9. The limiting rod 9 is threadedly connected to a limiting nut 12 through the threaded groove 11.

[0029] The overall effect of this embodiment is that after fixing the first hydraulic cylinder 1 and the second hydraulic cylinder 2, the limiting rod 9 is passed through the through hole 10 of the first clamping rod 5 and the second clamping rod 6 at the same time. Then, the pressure plate 8 is placed on the upper surface of the first clamping rod 5, and the limiting nut 12 is installed at the threaded groove 11. The limiting nut 12 is continuously rotated so that it is attached to the lower surface of the second clamping rod 6, thereby completing the fixing of the first clamping rod 5 and the second clamping rod 6.

[0030] The usage method and working principle of this device are as follows: The first hydraulic cylinder 1 and the second hydraulic cylinder 2 have the same structure. When used in combination, the first clamping rod 5 on the outer wall of the first hydraulic cylinder 1 is rotated to overlap with the second hydraulic cylinder 2. At this time, the first clamping rod 5 will overlap with the positioning block 4 of the sleeve 3. The second clamping rod 6 is provided on the outer wall of the second hydraulic cylinder 2. The second clamping rod 6 can be used to clamp other hydraulic cylinders with the same structure as the first hydraulic cylinder 1, thereby assembling multiple hydraulic cylinders together.

[0031] After assembly, the second clamping rod 6 is rotated to fit against the outer wall of the first hydraulic cylinder 1. Then, the limiting rod 9 passes through the through hole 10 of the first clamping rod 5 and the second clamping rod 6, so that the pressure plate 8 overlaps the upper surface of the first clamping rod 5. Then, the limiting nut 12 is installed at the threaded groove 11. The limiting nut 12 is continuously rotated to fit against the lower surface of the second clamping rod 6, thereby completing the fixation of the first clamping rod 5 and the second clamping rod 6.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A combined hydraulic cylinder, characterized in that: The system includes a first hydraulic cylinder (1) and a second hydraulic cylinder (2). A sleeve (3) is fixedly installed on the outer wall of the first hydraulic cylinder (1) and the outer wall of the second hydraulic cylinder (2). A positioning block (4) is symmetrically fixedly installed on the outer wall of the sleeve (3). A first clamping rod (5) is rotatably connected to one end of the positioning block (4) on the outer wall of the first hydraulic cylinder (1). One end of the first clamping rod (5) overlaps the sleeve (3) on the outer wall of the second hydraulic cylinder (2). A second clamping rod (6) is rotatably connected to one end of the positioning block (4) on the outer wall of the second hydraulic cylinder (2). The second clamping rod (6) is located below the first clamping rod (5).

2. The combined hydraulic cylinder according to claim 1, characterized in that: One end of the first clamping rod (5) and one end of the second clamping rod (6) are both fixedly installed with a mating protrusion (7), and an arc-shaped notch (13) is provided at the top of the arc of the mating protrusion (7).

3. A combined hydraulic cylinder according to claim 2, characterized in that: The docking protrusion (7) overlaps the outer wall of the sleeve (3) through the arc-shaped notch (13), and the lower surface of the first clamping rod (5) overlaps the positioning block (4) on the outer wall of the second hydraulic cylinder (2).

4. A combined hydraulic cylinder according to claim 1, characterized in that: Both the first clamping rod (5) and the second clamping rod (6) have through holes (10) inside.

5. A combined hydraulic cylinder according to claim 4, characterized in that: A limiting rod (9) is inserted into the inside of the through hole (10), and a pressure plate (8) is fixedly connected between the two limiting rods (9).

6. A combined hydraulic cylinder according to claim 5, characterized in that: The lower surface of the pressure plate (8) overlaps the upper surface of the first clamping rod (5), and the bottom of the limiting rod (9) is provided with a threaded groove (11).

7. A combined hydraulic cylinder according to claim 6, characterized in that: The limiting rod (9) is threadedly connected to the limiting nut (12) through the threaded groove (11).

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