A combined hydraulic cylinder

Abstract

The utility model discloses a combined hydraulic cylinder, including combined frame, two groups of hydraulic cylinder body are installed in the inside of combined frame, the inside of combined frame still is provided with the fixed component that two groups of hydraulic cylinder body are combined and locked, and the top of two groups of hydraulic cylinder body is all connected with the connecting plate through a group of buffer assembly, buffer assembly includes the first support plate of fixed mounting in the top of hydraulic cylinder body, and the telescopic link is installed in the top of first support, the utility model discloses the setting of buffer assembly, when two groups of hydraulic cylinder body work, first push buffer assembly, and the telescopic link and spring in two groups of buffer assembly all produce corresponding deformation after being extruded by first support plate and second support plate, and the deviation of the telescopic asynchronization of two groups of hydraulic cylinder body is indirectly offset, although the size of the thrust still has slight deviation, but the thrust of two groups of hydraulic cylinder body to the connecting plate is not interfered with each other, thereby improving the use efficiency of combined hydraulic cylinder.

Description

Technical Field

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

[0002] A hydraulic cylinder is an actuator in a hydraulic system. It converts the hydraulic energy provided by the hydraulic pump into mechanical energy of linear reciprocating motion or oscillating motion to achieve actions such as pushing, pulling, lifting, and tilting the load. For the garbage compression hydraulic cylinder used inside sanitation vehicles, the hydraulic cylinder generally drives the pressure plate to move during operation to compress the internal garbage. The thrust of a single hydraulic cylinder is relatively small, so a parallel combination of hydraulic cylinders is required.

[0003] Existing combined hydraulic cylinders assemble two sets of hydraulic cylinders using simple modular components to achieve simultaneous control of opening. Although the two sets of hydraulic cylinders are of the same model and specifications, there are manufacturing precision deviations (such as cylinder diameter errors and differences in sealing resistance) or uneven load distribution between them. This can easily lead to asynchronous extension and retraction, causing one set of hydraulic cylinders with a slower stroke to remain in a state of inactivity, or even to cancel out the work done by the other set of hydraulic cylinders. This severely reduces the efficiency of the combined hydraulic cylinder. Therefore, we need to propose a combined hydraulic cylinder. Utility Model Content

[0004] The purpose of this utility model is to provide a combined hydraulic cylinder. By using a fixing component, two sets of hydraulic cylinder bodies are fixedly installed inside the combined frame. By setting a buffer component, when the two sets of hydraulic cylinder bodies start to work through the buffer component, the first support plate and the second support plate compress or stretch the telescopic rod and the spring. The telescopic rod and the spring will produce corresponding deformation, which indirectly cancels the deviation of the asynchronous extension and retraction of the two sets of hydraulic cylinder bodies, thereby improving the efficiency of the combined hydraulic cylinder and solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined hydraulic cylinder, including a combination frame, inside which two sets of hydraulic cylinder bodies are mounted, and inside the combination frame is also installed a fixing component for locking the two sets of hydraulic cylinder bodies after combination, the tops of the two sets of hydraulic cylinder bodies are connected to a connecting plate through a buffer component; the buffer component includes a first support plate fixedly installed on the top of the hydraulic cylinder body, a telescopic rod installed on the top of the first support plate, a second support plate fixedly installed on the top of the telescopic rod, a spring movably fitted in the middle of the telescopic rod, and the top of the second support plate fixedly connected to the bottom of the connecting plate.

[0006] Preferably, the bottom of the spring is fixedly mounted on the top of the first support plate, and the top of the spring is fixedly welded to the bottom of the second support plate.

[0007] Preferably, the top of the combined frame is provided with two sets of hollowed-out concave grooves, and the outer sides of the two sets of hydraulic cylinder bodies are respectively movably engaged with the inside of one set of concave grooves.

[0008] Preferably, the fixing component includes a fixing plate fixedly installed inside the assembly frame, and two sets of fixing rings for limiting the hydraulic cylinder body are provided on one side of the fixing plate.

[0009] Preferably, one end of each fixed ring is rotatably mounted with a set of locking rings, and one end of each set of locking rings is bolted to the other end of the fixed ring.

[0010] Preferably, the oil inlet ends on the outer sides of the two sets of hydraulic cylinder bodies are connected to a common oil inlet pipe, and a flow divider valve is provided in the middle of the oil inlet pipe. The oil outlet ends on the outer sides of the two sets of hydraulic cylinder bodies are connected to a common oil return pipe.

[0011] Preferably, a set of limiting rods is fixedly installed at the bottom of the connecting plate, the bottom of the limiting rods extends into the interior of the assembly frame, and a limiting plate is fixedly installed at the bottom of the limiting rods.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By setting up a buffer assembly, when the two sets of hydraulic cylinders are working, they first push the buffer assembly. The telescopic rods and springs in the two sets of buffer assemblies are squeezed by the first support plate and the second support plate, and they all undergo corresponding deformation. This indirectly cancels the deviation of the asynchronous extension and retraction of the two sets of hydraulic cylinders. Although there is still a slight deviation in the magnitude of the thrust, the thrust of the two sets of hydraulic cylinders on the connecting plate is not interfered with by each other, thereby improving the efficiency of the combined hydraulic cylinder.

[0013] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the buffer assembly of this utility model; Figure 3 This is an exploded view of the fixing component of this utility model; Figure 4 This is a schematic diagram of the installation structure of the diversion valve of this utility model; Figure 5 This is an exploded structural diagram of the buffer component of this utility model.

[0015] In the diagram: 1. Assembly frame; 2. Concave groove; 3. Hydraulic cylinder body; 4. Fixing assembly; 41. Fixing plate; 42. Fixing ring; 43. Locking ring; 5. Oil inlet pipe; 6. Diverter valve; 7. Oil return pipe; 8. Buffer assembly; 81. First support plate; 82. Telescopic rod; 83. Second support plate; 84. Spring; 9. Connecting plate; 10. Limiting rod; 11. Limiting plate. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This utility model provides a combined hydraulic cylinder, including a combination frame 1. Two sets of hydraulic cylinder bodies 3 are mounted inside the combination frame 1. A fixing component 4 is also installed inside the combination frame 1 to lock the two sets of hydraulic cylinder bodies 3 after combination. The tops of the two sets of hydraulic cylinder bodies 3 are connected to the connecting plate 9 through a buffer component 8. The buffer component 8 includes a first support plate 81 fixedly installed on the top of the hydraulic cylinder body 3. A telescopic rod 82 is installed on the top of the first support plate 81. A second support plate 83 is fixedly installed on the top of the telescopic rod 82. A spring 84 is movably fitted in the middle of the telescopic rod 82. The top of the second support plate 83 is fixedly connected to the bottom of the connecting plate 9.

[0018] In use, the fixing component 4 secures the two sets of hydraulic cylinder bodies 3 inside the combination frame 1. With the buffer component 8, when the two sets of hydraulic cylinder bodies 3 start to work, the connection between the hydraulic cylinder body 3, the first support plate 81, the telescopic rod 82, the second support plate 83, and the spring 84 compresses or stretches the telescopic rod 82 and the spring 84. The telescopic rod 82 and the spring 84 will produce corresponding deformation, which indirectly counteracts the asynchronous extension and retraction of the two sets of hydraulic cylinder bodies 3, thereby improving the efficiency of the combined hydraulic cylinder.

[0019] The bottom of the spring 84 is fixedly mounted on the top of the first support plate 81, and the top of the spring 84 is fixedly welded to the bottom of the second support plate 83. The connection between the spring 84, the first support plate 81, and the second support plate 83 improves the stability of the spring 84 installation.

[0020] The top of the combination frame 1 is provided with two sets of hollow concave grooves 2. The outer sides of the two sets of hydraulic cylinder bodies 3 are respectively movably engaged in the interior of one set of concave grooves 2. The bottom of the hydraulic cylinder body 3 is placed at the bottom of the inner side of the combination frame 1. The concave grooves 2 can be used to position the hydraulic cylinder body 3, and the top of the hydraulic cylinder body 3 can be passed through to the top of the combination frame 1 through the concave grooves 2, which facilitates the extension and retraction of the hydraulic cylinder body 3 to perform work.

[0021] The fixing component 4 includes a fixing plate 41 fixedly installed inside the assembly frame 1. Two sets of fixing rings 42 for limiting the hydraulic cylinder body 3 are provided on one side of the fixing plate 41. A set of locking rings 43 is rotatably installed at one end of each fixing ring 42. One end of each set of locking rings 43 is bolted to the other end of the fixing ring 42. Through the connection relationship between the fixing plate 41, the fixing rings 42 and the locking rings 43, the middle part of the hydraulic cylinder body 3 is first placed inside the fixing ring 42. Then, the locking rings 43 are rotated and bolted to clamp and fix the hydraulic cylinder body 3, thereby achieving the effect of assembling and fixing the hydraulic cylinder body 3.

[0022] The oil inlet ends on the outer sides of the two sets of hydraulic cylinder bodies 3 are connected to a common oil inlet pipe 5. A flow divider valve 6 is installed in the middle of the oil inlet pipe 5. The flow divider valve 6 is composed of a throttle valve and a pressure compensation valve. It is used to control the oil inside the oil inlet pipe 5 to be evenly distributed to the interior of the two sets of hydraulic cylinder bodies 3, so as to avoid the increase of elongation deviation due to inconsistent oil pressure between the two sets of hydraulic cylinder bodies 3. The oil outlet ends on the outer sides of the two sets of hydraulic cylinder bodies 3 are connected to a common oil return pipe 7. The oil return pipe 7 is also equipped with a throttle valve and a pressure compensation valve to avoid the increase of retraction deviation due to uneven oil return.

[0023] A set of limiting rods 10 are fixedly installed at the bottom of the connecting plate 9. The setting of the bottom movable limiting rods 10 restricts the movement direction of the connecting plate 9, thereby improving the stability of the movement of the connecting plate 9. The rods extend into the interior of the assembly frame 1. A limiting plate 11 is fixedly installed at the bottom of the limiting rods 10. The setting of the limiting plate 11 prevents the bottom of the limiting rods 10 from falling off the top of the assembly frame 1, thereby improving the stability of the movement of the limiting rods 10.

[0024] In practical use, the two sets of hydraulic cylinder bodies 3 are placed inside the combination frame 1, and then bolted to the fixing plate 41 by the locking ring 43 to achieve the effect of clamping and fixing the two sets of hydraulic cylinder bodies 3. Then, the bottom of the combination frame 1 is installed in the designated position, and the connecting plate 9 is connected to the equipment to be pushed, thereby realizing the installation of the combined hydraulic cylinder. When the two sets of hydraulic cylinder bodies 3 are started to work, the buffer assembly 8 is pushed first. The telescopic rod 82 and spring 84 in the two sets of buffer assemblies 8 are squeezed by the first support plate 81 and the second support plate and produce corresponding deformation, which indirectly offsets the deviation of the asynchronous extension and retraction of the two sets of hydraulic cylinder bodies 3 and improves the efficiency of the combined hydraulic cylinder.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined hydraulic cylinder, characterized in that: Includes a combination frame (1), inside which are installed two sets of hydraulic cylinder bodies (3), and inside the combination frame (1) are also installed a fixing component (4) for locking the two sets of hydraulic cylinder bodies (3) after combination. The tops of the two sets of hydraulic cylinder bodies (3) are connected to the connecting plate (9) through a set of buffer components (8). The buffer assembly (8) includes a first support plate (81) fixedly installed on the top of the hydraulic cylinder body (3), a telescopic rod (82) is installed on the top of the first support plate (81), a second support plate (83) is fixedly installed on the top of the telescopic rod (82), a spring (84) is movably fitted in the middle of the telescopic rod (82), and the top of the second support plate (83) is fixedly connected to the bottom of the connecting plate (9).

2. The combined hydraulic cylinder according to claim 1, characterized in that: The bottom of the spring (84) is fixedly mounted on the top of the first support plate (81), and the top of the spring (84) is fixedly welded to the bottom of the second support plate (83).

3. A combined hydraulic cylinder according to claim 1, characterized in that: The top of the combined frame (1) is provided with two sets of hollowed-out concave grooves (2), and the outer sides of the two sets of hydraulic cylinder bodies (3) are respectively movably engaged in the interior of one set of concave grooves (2).

4. A combined hydraulic cylinder according to claim 1, characterized in that: The fixing component (4) includes a fixing plate (41) fixedly installed inside the assembly frame (1), and two sets of fixing rings (42) for limiting the hydraulic cylinder body (3) are provided on one side of the fixing plate (41).

5. A combined hydraulic cylinder according to claim 4, characterized in that: One end of each of the fixed rings (42) is rotatably mounted with a set of locking rings (43), and one end of each set of locking rings (43) is bolted to the other end of the fixed ring (42).

6. A combined hydraulic cylinder according to claim 4, characterized in that: The oil inlet ends of the two sets of hydraulic cylinder bodies (3) are connected to a set of oil inlet pipes (5), and a flow divider valve (6) is provided in the middle of the oil inlet pipes (5). The oil outlet ends of the two sets of hydraulic cylinder bodies (3) are connected to a set of oil return pipes (7).

7. A combined hydraulic cylinder according to claim 1, characterized in that: A set of limiting rods (10) is fixedly installed at the bottom of the connecting plate (9). The bottom of the limiting rods (10) extends through the interior of the combined frame (1), and a limiting plate (11) is fixedly installed at the bottom of the limiting rods (10).

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