Multi-cylinder linkage type hydraulic machine

Abstract

The utility model discloses a multi-cylinder linkage type hydraulic machine, and relates to the technical field of hydraulic machines. Comprising a rack, an oil tank is fixed to one side of the upper surface of the rack, the outer side of one end of the oil tank communicates with an oil pump through a pipeline, a distribution pipe is fixed to the middle of the other side of the upper surface of the rack, and a mounting plate is fixed to the other side of the upper surface of the rack; a plurality of four-way electromagnetic valves which are distributed in a linear array are mounted on the lower surface of the mounting plate; the mounting assembly is arranged on the inner top wall of the rack and is used for mounting the oil cylinder assembly; and the oil cylinder assembly is arranged in the inner cavity of the rack. According to the multi-cylinder linkage type hydraulic machine, the containing groove is formed in the inner top wall of the rack, the limiting groove in the containing groove is matched with the limiting block on the top connecting plate of the hydraulic cylinder, the hydraulic cylinder can be limited on the rack, meanwhile, the limiting block can be driven to be separated from the limiting groove through the shifting piece, and the hydraulic cylinder is convenient to disassemble, assemble and overhaul.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic presses, and specifically relates to a multi-cylinder linkage hydraulic press. Background Technique

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it can eliminate the need for a speed reduction device, and there is no transmission gap, so the motion is stable. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of the piston and the pressure difference on both sides; the hydraulic cylinder basically consists of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application occasion, while the other devices are essential.

[0003] The utility model with the publication number of CN218062861U discloses a hydraulic system of a multi-cylinder linkage hydraulic press, including an oil tank, an oil pump, an oil inlet pipe, a hydraulic cylinder, and an oil outlet pipe. The end of the oil inlet pipe is fixedly connected with a first distribution pipe. The side of the first distribution pipe is connected with an electromagnetic reversing valve through a pipeline. A valve rod is movably sleeved inside the electromagnetic reversing valve. A connecting rod is connected between the valve rods. The two ends of the connecting rod are movably sleeved with electromagnet sleeves.

[0004] As shown in the above utility model, the existing hydraulic mechanism of a multi-cylinder linkage hydraulic press generally connects the valve rods of multiple electromagnetic reversing valves together by using a connecting rod. Multiple electromagnetic reversing valves can perform commutation synchronously, and can realize the synchronous oil inlet and oil outlet of the hydraulic cylinders. Although this method ensures that multiple hydraulic cylinders move simultaneously, the hydraulic cylinders in this method are all fixed on the frame, which is not convenient to disassemble, replace and repair when damaged, reducing the working efficiency of multi-cylinder linkage. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a multi-cylinder linkage hydraulic press to solve the above problems.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: A multi-cylinder linkage hydraulic press, including:

[0007] A frame, on one side of the upper surface of the frame, an oil tank is fixed. One end of the oil tank is communicated with an oil pump through a pipeline. In the middle of the other side of the upper surface of the frame, a distribution pipe is fixed. On the other side of the upper surface of the frame, a mounting plate is fixed. A plurality of four-way solenoid valves are linearly and arrayedly arranged on the lower surface of the mounting plate;

[0008] A mounting component, which is arranged on the inner top wall of the frame and is used for mounting the oil cylinder component;

[0009] The oil cylinder assembly is arranged in the inner cavity of the frame. The top of the oil cylinder assembly is installed on the frame through the mounting assembly, and the four-way solenoid valve is connected to the oil cylinder assembly through an oil pipe.

[0010] Preferably, the output port of the oil pump communicates with the distribution pipe through an outlet oil pipe, the distribution pipe communicates with the fuel tank through an inlet oil pipe, and the distribution pipe communicates with different four-way solenoid valves through two inlet and outlet pipes respectively.

[0011] Preferably, the mounting assembly includes a placement groove opened on the inner top wall of the frame. A plurality of limiting grooves are arranged at the bottom edge of the placement groove in an annular array. A plurality of baffles are arranged on the outer side of the opening of the placement groove in an annular array, and the baffles are misaligned with the limiting grooves.

[0012] Preferably, one end of the upper surface of the baffle is fixed with a dovetail slider. A dovetail chute is opened on the inner top wall of the frame. The dovetail slider is located in the dovetail chute. One end of the baffle is connected with a limiting screw through a screw hole, and the limiting screw corresponds to the bottom of the dovetail chute.

[0013] Preferably, the oil cylinder assembly includes a hydraulic cylinder. A connecting plate is fixed to the top of the hydraulic cylinder. The connecting plate is adapted to the placement groove. A plurality of grooves are arranged at the edge of the upper surface of the connecting plate in an annular array. Limiting blocks are arranged in the grooves. One end of the limiting block is connected with the inner wall of the groove through a spring. A linear empty groove is opened at the bottom of the groove. One end of the bottom of the limiting block is connected with a dial through a connecting block, and the dial is located on the lower surface of the connecting plate.

[0014] Preferably, a pressing plate is fixed to the output end of the hydraulic cylinder. The pressing plate is fixed to the output end of the hydraulic cylinder through a plurality of reinforcing plates arranged in an annular array.

[0015] Beneficial effects

[0016] The utility model provides a multi-cylinder linkage hydraulic press. Compared with the prior art, the following beneficial effects are achieved:

[0017] 1. For this multi-cylinder linkage hydraulic press, by arranging a placement groove on the inner top wall of the frame, and the limiting grooves on the placement groove are adapted to the limiting blocks on the connecting plate at the top of the hydraulic cylinder, the hydraulic cylinder can be limited on the frame. At the same time, the limiting block can be driven to separate from the limiting groove through the dial, so that the hydraulic cylinder is convenient for disassembly, installation and maintenance.

[0018] 2. In this multi-cylinder linkage hydraulic press, a baffle is provided on the mounting assembly. The baffle is connected to the dovetail chute on the frame through a dovetail slider, so that multiple baffles can further limit the connecting plate. The baffle can be limited by the cooperation of the limit screw on the baffle and the screw hole, so that the baffle can stably limit the connecting plate, and then the hydraulic cylinder is stably installed. A pressing plate is provided at the bottom of the output end of the hydraulic cylinder. The setting of the pressing plate enables multiple hydraulic cylinders to act separately. By providing a connecting plate below the pressing plate and connecting the connecting plate to multiple pressing plates through bolts, multiple hydraulic cylinders can be connected in parallel to improve the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic bottom view of the overall structure of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the mounting assembly of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of the oil cylinder assembly of the present invention;

[0023] Figure 5 is a schematic diagram of the structure of the connecting plate of the present invention.

[0024] In the figure: frame 1, fuel tank 11, oil pump 12, distribution pipe 13, mounting plate 14, four-way solenoid valve 15, mounting assembly 2, placement groove 21, limit groove 22, baffle 23, dovetail slider 24, dovetail chute 25, limit screw 26, oil cylinder assembly 3, hydraulic cylinder 31, connecting plate 32, groove 33, limit block 34, spring 35, linear empty groove 36, dial 37, pressing plate 38, reinforcing plate 39. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-5 , the present invention provides two technical solutions:

[0027] The first embodiment: A multi-cylinder linkage hydraulic press includes:

[0028] A frame 1, an oil tank 11 is fixed on one side of the upper surface of the frame 1, an outer side of one end of the oil tank 11 is connected to an oil pump 12 through a pipeline, a distribution pipe 13 is fixed to the middle of the other side of the upper surface of the frame 1, a mounting plate 14 is fixed to the other side of the upper surface of the frame 1, and a plurality of four-way solenoid valves 15 distributed in a linear array are installed on the lower surface of the mounting plate 14, the output port of the oil pump 12 is connected to the distribution pipe 13 through an oil outlet pipe, the middle part of the oil outlet pipe is connected to the oil tank 11 through a relief valve, the distribution pipe 13 is connected to the oil tank 11 through an oil inlet pipe, and the distribution pipe 13 is connected to different four-way solenoid valves 15 through two inlet and outlet pipes.

[0029] The mounting assembly 2 is arranged on the inner top wall of the frame 1 and is used to mount the cylinder assembly 3; the mounting assembly 2 includes a placement groove 21 opened on the inner top wall of the frame 1, and a plurality of limit grooves 22 distributed in a circular array are opened on the bottom edge of the placement groove 21, and a plurality of baffles 23 distributed in a circular array are arranged on the outer side of the opening of the placement groove 21, and the baffles 23 are staggered with the limit grooves 22, and a dovetail slider 24 is fixed to one end of the upper surface of the baffle 23, and a dovetail slide groove 25 is opened on the inner top wall of the frame 1, and the dovetail slide groove 24 is located in the dovetail slide groove 25, and one end of the baffle 23 is connected to a limit screw 26 through a screw hole, and the limit screw 26 corresponds to the bottom of the dovetail slide groove 25, and by twisting the limit screw 26 until the limit screw 26 contacts the bottom of the dovetail slide groove 25, a damping limit function is played, and the baffle 23 is limited and fixed, so that the baffle 23 can stably limit the cylinder assembly 3.

[0030] The second embodiment is mainly different from the first embodiment in that: the cylinder assembly 3 is arranged in the inner cavity of the frame 1, the top of the cylinder assembly 3 is installed on the frame 1 through the mounting assembly 2, the four-way solenoid valve 15 is connected to the cylinder assembly 3 through the oil pipe, the cylinder assembly 3 includes a hydraulic cylinder 31, a connecting plate 32 is fixed on the top of the hydraulic cylinder 31, the connecting plate 32 is adapted to the placement groove 21, a plurality of grooves 33 distributed in a ring array are provided on the upper surface edge of the connecting plate 32, a limit block 34 is arranged in the groove 33, one end of the limit block 34 is connected to the inner wall of the groove 33 through a spring 35, and the limit block 34 Under the action of the spring 35, it can be automatically inserted into the limit groove 22. A linear empty groove 36 is provided at the bottom of the groove 33. The bottom of one end of the limit block 34 is connected to a paddle 37 through a connecting block. The paddle 37 is located on the lower surface of the connecting plate 32. The limit block 34 is driven to move by the paddle 37, so that the limit block 34 can be separated from the limit groove 22, and the limit between the connecting plate 32 and the placement groove 21 can be released. A pressure plate 38 is fixed to the output end of the hydraulic cylinder 31. The pressure plate 38 is fixed to the output end of the hydraulic cylinder 31 through a plurality of reinforcing plates 39 distributed in a ring array. The setting of the reinforcing plate 39 improves the connection strength between the pressure plate 38 and the hydraulic cylinder 31.

[0031] When the hydraulic cylinder 31 is installed in the device, the connecting plate 32 on the hydraulic cylinder 31 is first placed in the placement groove 21. At this time, the limit block 34 moves in the force box groove 33 to compress the spring 35. When the connecting plate 32 is completely moved into the placement groove 21, the limit block 34 corresponds to the limit groove 22. When the limit block 34 is misaligned with the limit groove 22, the spring 35 continues to be compressed and stressed. At this time, the hydraulic cylinder 31 is rotated until the limit block 34 is adapted to the limit groove 22. The limit block 34 is inserted into the limit groove 22 under the action of the spring 35, the connecting plate 32 is initially limited, and then the baffle 23 is moved until the baffle 23 moves to the lower surface of the connecting plate 32, and then the limit The screw 26 is tightened until the limit screw 26 contacts the bottom of the dovetail groove 25, which plays a role of damping and limiting, and limits the baffle 23 below the connecting plate 32, which plays a further limiting role, so that the connecting plate 32 is installed stably, and then the hydraulic cylinder 31 is installed stably. Then, the oil pipe on the four-way solenoid valve 15 is installed on the hydraulic cylinder 31. When a problem occurs with the hydraulic cylinder 31, the limit screw 26 is loosened, and then the baffle 23 is moved to separate from the connecting plate 32. Then, the limit block 34 is driven to move by the paddle 37 to separate the limit block 34 from the limit groove 22. At this time, the connecting plate 32 can be separated from the groove to prevent separation, and the hydraulic cylinder 31 can be disassembled and repaired.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-cylinder linkage hydraulic press, characterized in that: include: A frame, an oil tank is fixed on one side of the upper surface of the frame, an outer side of one end of the oil tank is connected to an oil pump through a pipeline, a distribution pipe is fixed in the middle of the other side of the upper surface of the frame, a mounting plate is fixed on the other side of the upper surface of the frame, and a plurality of four-way solenoid valves distributed in a linear array are installed on the lower surface of the mounting plate; A mounting assembly, the mounting assembly being arranged on the inner top wall of the frame and used for mounting the oil cylinder assembly; The oil cylinder assembly is arranged in the inner cavity of the frame, the top of the oil cylinder assembly is installed on the frame through the mounting assembly, and the four-way solenoid valve is connected to the oil cylinder assembly through an oil pipe.

2. A multi-cylinder linkage hydraulic press according to claim 1, characterized in that: The output port of the oil pump is communicated with the distribution pipe through the oil outlet pipe, the distribution pipe is communicated with the oil tank through the oil inlet pipe, and the distribution pipe is respectively connected with different four-way solenoid valves through two inlet and outlet pipes.

3. A multi-cylinder linkage hydraulic press according to claim 1, characterized in that: The mounting assembly includes a placement slot opened on the inner top wall of the frame, a plurality of limit slots distributed in a circular array are opened on the bottom edge of the placement slot, a plurality of baffles distributed in a circular array are arranged outside the opening of the placement slot, and the baffles are staggered with the limit slots.

4. A multi-cylinder linkage hydraulic press according to claim 3, characterized in that: A dovetail slider is fixed to one end of the upper surface of the baffle, a dovetail slot is provided on the inner top wall of the frame, the dovetail slider is located in the dovetail slot, one end of the baffle is connected to a limiting screw via a screw hole, and the limiting screw corresponds to the bottom of the dovetail slot.

5. A multi-cylinder linkage hydraulic press according to claim 1, characterized in that: The cylinder assembly includes a hydraulic cylinder, a connecting plate is fixed on the top of the hydraulic cylinder, the connecting plate is adapted to the placement groove, a plurality of grooves distributed in a circular array are provided on the edge of the upper surface of the connecting plate, a limiting block is provided in the groove, one end of the limiting block is connected to the inner wall of the groove through a spring, a linear empty groove is provided at the bottom of the groove, the bottom of one end of the limiting block is connected to a paddle through a connecting block, and the paddle is located on the lower surface of the connecting plate.

6. A multi-cylinder linkage hydraulic press according to claim 5, characterized in that: A pressure plate is fixed to the output end of the hydraulic cylinder, and the pressure plate is fixed to the output end of the hydraulic cylinder through a plurality of reinforcing plates distributed in a ring array.

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