Integrated hydraulic transmission device

Abstract

The utility model provides an integrated hydraulic transmission device, and belongs to the technical field of mechanical equipment. A reversing channel is arranged in the reversing pump, and the driving piece is in driving connection with the reversing pump; the oil cylinder and the reversing pump are fixed to the end of the oil cylinder, the reversing channel is communicated with the oil cylinder, a transmission cavity is formed in the oil cylinder, an oil changing pipe is arranged in the transmission cavity, an oil space is formed between the cavity wall of the transmission cavity and the oil changing pipe, one end of the oil changing pipe is communicated with one end of the oil space, and the other end of the oil changing pipe is communicated with the other end of the oil space. The other end of the oil changing pipe is communicated with the other end of the oil liquid space through a reversing channel; the magnetic force part is located in the oil liquid space, the oil changing pipe is sleeved with the magnetic force part, the magnetic force part can move relative to the oil changing pipe, a transmission part capable of moving relative to the oil cylinder is arranged outside the oil cylinder, and the transmission part is magnetically connected with the magnetic force part; the hydraulic system has the advantages that the reversing pump is directly fixed at the end part of the oil cylinder, and the oil path channel in the reversing pump is communicated with the internal pipeline of the oil cylinder, so that the highly integrated design of the system is realized.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology, and in particular relates to an integrated hydraulic transmission device. Background Technology

[0002] Hydraulic transmission systems are widely used in industrial automation, engineering machinery, aerospace, and other fields due to their advantages such as high power density, precise control, and high-efficiency energy conversion. Traditional hydraulic transmission systems typically consist of drive components (such as motors or engines), hydraulic pumps, cylinders, valves, and piping. These components are connected by complex piping to form a complete hydraulic circuit used to control mechanical motion and transmit power.

[0003] However, traditional hydraulic systems are complex in structure, involving numerous external piping connections. This not only increases the difficulty of installation and maintenance but also easily leads to leakage problems, affecting the system's reliability and service life. Furthermore, the mechanical seals in traditional hydraulic systems are prone to wear after prolonged operation, resulting in decreased sealing performance and further increasing maintenance costs and the risk of failure. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing an integrated hydraulic transmission device with a compact structure and excellent sealing performance.

[0005] The objective of this utility model can be achieved through the following technical solution: an integrated hydraulic transmission device, comprising:

[0006] Drive components;

[0007] A reversing pump, wherein a reversing channel is provided inside the reversing pump, and the driving component is drivenly connected to the reversing pump;

[0008] The hydraulic cylinder has a reversing pump fixed at its end, and the reversing channel is connected to the hydraulic cylinder. The hydraulic cylinder has a transmission chamber, and the transmission chamber has an oil changing pipe. An oil space is formed between the cavity wall of the transmission chamber and the oil changing pipe. One end of the oil changing pipe is connected to one end of the oil space, and the other end of the oil changing pipe is connected to the other end of the oil space through the reversing channel.

[0009] A magnetic part is located within the oil space and is sleeved on the oil change pipe and can move relative to the oil change pipe. A transmission part that can move relative to the oil cylinder is provided outside the oil cylinder, and the transmission part is magnetically connected to the magnetic part.

[0010] In the aforementioned integrated hydraulic transmission device, the magnetic part includes multiple first magnets distributed along the length of the oil changing pipe; the transmission part includes multiple second magnets distributed along the length of the oil cylinder, and the first magnets and corresponding second magnets are magnetically connected to each other.

[0011] In the aforementioned integrated hydraulic transmission device, a connection port is fixedly provided between the reversing pump and the oil cylinder. Two overflow chambers are provided in the connection port, and overflow valves are provided in the overflow chambers. There are two reversing channels, and the overflow chambers are respectively connected to the corresponding reversing channels.

[0012] The aforementioned integrated hydraulic transmission device also includes an oil storage tank, which has an oil storage chamber containing oil, and the oil storage chamber is connected to the reversing pump.

[0013] In the aforementioned integrated hydraulic transmission device, a return pipe is provided inside the reversing pump, and the two ends of the return pipe are respectively connected to the oil storage chamber and the overflow chamber.

[0014] In the aforementioned integrated hydraulic transmission device, a one-way valve is provided inside the reversing pump. The one-way valve is located on the connecting pipeline between the oil storage chamber and the two reversing channels, and the one-way valve enables unidirectional flow from the oil storage chamber toward the reversing channels.

[0015] In the aforementioned integrated hydraulic transmission device, the oil storage tank includes an oil outlet end communicating with the oil storage cavity. The driving component includes a housing fixedly connected to the oil storage tank. A receiving cavity is formed inside the housing. An isolation sleeve is fixedly installed inside the receiving cavity. A stator mounting cavity is formed between the isolation sleeve and the cavity wall of the receiving cavity. A stator is fixedly installed inside the stator mounting cavity. A rotor mounting cavity is formed inside the isolation sleeve. A rotor is rotatably installed inside the rotor mounting cavity. The rotor is fixed to the drive shaft inside the reversing pump. The oil outlet end is sealed to the isolation sleeve, realizing communication between the oil outlet end and the rotor mounting cavity. The rotor mounting cavity is connected to the reversing channel.

[0016] In the aforementioned integrated hydraulic transmission device, a circuit control board is fixedly installed inside the stator mounting cavity, and a communication connection terminal is provided on the drive component to communicate with the circuit control board.

[0017] In the aforementioned integrated hydraulic transmission device, a connecting seat is integrally provided on the isolation sleeve. The connecting seat is provided with a connecting through hole that communicates with the rotor mounting cavity. A connecting groove is provided on the other side of the connecting seat. The connecting groove is fixed to the reversing pump. A connecting cavity is formed between the connecting groove and the end face of the reversing pump. The connecting cavity is respectively connected to the connecting through hole and the reversing channel. The drive shaft passes through the connecting seat and extends into the reversing pump.

[0018] In the aforementioned integrated hydraulic transmission device, a control chamber is provided inside the reversing pump, and a gear set is provided inside the control chamber. The control chamber is connected to two reversing channels to control the rotation direction of the gear set, thereby realizing the switching of the oil circuit direction within the reversing channels. The driving gear in the gear set is fixed to the transmission shaft.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) By directly fixing the reversing pump to the end of the cylinder and connecting the oil passage in the reversing pump with the internal pipeline of the cylinder, a highly integrated design of the system is achieved. This not only reduces the number of components and pipeline connections, but also greatly saves space and makes the whole device more compact. Furthermore, the oil changing pipe, reversing passage and oil space form a closed and effective oil circulation path, which can ensure smooth oil flow and reduce energy loss.

[0021] (2) The magnetic part is located in the oil space and is sleeved on the oil change pipe. It can move relative to the oil change pipe. At the same time, an external transmission part is provided that can move relative to the oil cylinder and is magnetically connected to the magnetic part. This non-contact power transmission method avoids the friction loss and leakage problems caused by traditional mechanical seals, and improves the reliability and service life of the system. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure in the middle;

[0024] Figure 3 This is a schematic cross-sectional view of the connection between the drive unit and the reversing pump;

[0025] Figure 4 This is an exploded view of the connection between the drive unit and the reversing pump;

[0026] Figure 5 This is a three-dimensional structural diagram of a reversing pump;

[0027] Figure 6 yes Figure 5One of the schematic diagrams of the cross-sectional structure;

[0028] Figure 7 yes Figure 5 The second schematic diagram of the cross-sectional structure.

[0029] In the diagram, 100 is the reversing pump; 101 is the reversing channel; 102 is the connection port; 103 is the overflow chamber; 104 is the overflow valve; 105 is the return pipe; 106 is the check valve; 107 is the connecting seat; 108 is the connecting through hole; 109 is the connecting groove; 110 is the control chamber; 111 is the gear set; 112 is the drive shaft; 113 is the sliding bearing; 114 is the pump head; and 115 is the pump body.

[0030] 200. Hydraulic cylinder; 201. Oil changing pipe; 202. Oil space; 203. Magnetic unit; 204. Transmission unit; 205. First magnet; 206. Second magnet;

[0031] 300. Oil storage tank; 301. Oil storage chamber; 302. Oil outlet;

[0032] 400. Drive component; 401. Receiving cavity; 402. Isolation sleeve; 403. Stator mounting cavity; 404. Stator; 405. Rotor mounting cavity; 406. Rotor; 407. Circuit control board; 408. Communication connection terminal; 409. Housing. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] like Figures 1-7 As shown, an integrated hydraulic transmission device includes:

[0036] Drive component 400;

[0037] A reversing pump 100 is provided, and a reversing channel 101 is provided inside the reversing pump 100. A driving component 400 is drivenly connected to the reversing pump 100.

[0038] The hydraulic cylinder 200 and the reversing pump 100 are fixed at the end of the hydraulic cylinder 200, and the reversing channel 101 is connected to the hydraulic cylinder 200. The hydraulic cylinder 200 is provided with a transmission cavity, and the transmission cavity is provided with an oil changing pipe 201. An oil space 202 is formed between the cavity wall of the transmission cavity and the oil changing pipe 201. One end of the oil changing pipe 201 is connected to one end of the oil space 202, and the other end of the oil changing pipe 201 is connected to the other end of the oil space 202 through the reversing channel 101.

[0039] The magnetic part 203 is located inside the oil space 202 and is sleeved on the oil change pipe 201 and can move relative to the oil change pipe 201. The outside of the oil cylinder 200 is provided with a transmission part 204 that can move relative to the oil cylinder 200. The transmission part 204 is magnetically connected to the magnetic part 203.

[0040] In this embodiment, by directly fixing the reversing pump 100 to the end of the oil cylinder 200 and connecting the oil passage in the reversing pump 100 with the internal pipeline of the oil cylinder 200, a highly integrated system design is achieved. This not only reduces the number of components and pipeline connections but also greatly saves space, making the entire device more compact. Furthermore, the oil changing pipe 201, the reversing channel 101, and the oil space 202 form a closed and effective oil circulation path, which can ensure smooth oil flow and reduce energy loss.

[0041] The magnetic part 203 is located in the oil space 202 and is sleeved on the oil change pipe 201. It can move relative to the oil change pipe 201. At the same time, a transmission part 204 is provided on the outside, which can move relative to the oil cylinder 200 and is magnetically connected to the magnetic part 203. This non-contact power transmission method avoids the friction loss and leakage problems caused by traditional mechanical seals, and improves the reliability and service life of the system.

[0042] Specifically, the magnetic part 203 includes multiple first magnets 205 distributed along the length of the oil change pipe 201; the transmission part 204 includes multiple second magnets 206 distributed along the length of the cylinder 200, and the first magnets 205 and the corresponding second magnets 206 are magnetically connected to each other.

[0043] In this embodiment, the first magnet 205 and the corresponding second magnet 206 are magnetically attracted to each other, which can significantly enhance the overall magnetic coupling effect of the magnetic drive part, improve the efficiency of magnetic force transmission, and also enhance the stability and response speed of the system. Moreover, by changing the number of magnets in the magnetic part 203 and the transmission part 204, the load capacity of the system can be flexibly adjusted according to the actual application requirements. Increasing the number of magnets can enhance the magnetic field strength, thereby improving the load-bearing capacity of the magnetic drive part; conversely, reducing the number of magnets can reduce the load capacity.

[0044] In a further preferred embodiment, a connection port 102 is fixedly provided between the reversing pump 100 and the oil cylinder 200. Two overflow chambers 103 are provided in the connection port 102. An overflow valve 104 is provided in the overflow chamber 103. There are two reversing channels 101. The overflow chambers 103 are respectively connected to the corresponding reversing channels 101.

[0045] In this embodiment, by providing two overflow chambers 103 on the connection port 102 and installing an overflow valve 104 in each overflow chamber 103, damage to the system due to excessive pressure can be effectively prevented. When the system pressure exceeds the set value, the overflow valve 104 will automatically open, guiding the excess oil to other designated locations, thereby avoiding damage to system components caused by overpressure. For example, when the oil in the cylinder 200 expands due to increased temperature, it will cause the internal pressure to rise.

[0046] Preferably, the system also includes an oil storage tank 300, which has an oil storage chamber 301 that stores oil and is connected to the reversing pump 100.

[0047] In a further preferred embodiment, the reversing pump 100 is provided with a return pipe 105, the two ends of which are connected to the oil storage chamber 301 and the overflow chamber 103, respectively.

[0048] In this embodiment, a complete oil circulation path is constructed by providing a return pipe 105 inside the reversing pump 100 and connecting the return pipe 105 to the oil storage chamber 301. This structure allows excess oil in the cylinder 200 to return to the oil storage chamber 301 via the return pipe 105, thereby ensuring continuous oil circulation throughout the hydraulic system and maintaining stable system operation. Furthermore, when the oil level decreases due to operational needs or leaks, the reserve oil in the oil storage chamber 301 can be replenished to the system in a timely manner, ensuring the normal operation of hydraulic actuators (such as the cylinder 200).

[0049] In a further preferred embodiment, the reversing pump 100 is provided with a one-way valve 106, which is located on the connecting pipeline between the oil storage chamber 301 and the two reversing channels 101. The one-way valve 106 can realize one-way flow from the oil storage chamber 301 to the reversing channel 101.

[0050] In this embodiment, a one-way valve 106 is provided between the oil storage chamber 301 and the two reversing channels 101. Under normal operating conditions, the one-way valve 106 between the oil storage chamber 301 and the reversing channels 101 is closed to prevent oil from flowing back into the oil storage chamber 301. At this time, the reversing pump 100 delivers oil to the oil cylinder 200 by controlling the flow direction of the oil. When the oil pressure in the oil cylinder 200 is low, the one-way valve 106 opens, and the oil in the oil storage chamber 301 flows into the oil cylinder 200.

[0051] In a further preferred embodiment, the oil storage tank 300 includes an oil outlet 302 connected to the oil storage cavity 301, and the drive component 400 includes a housing 409 fixedly connected to the oil storage tank 300. A receiving cavity 401 is formed inside the housing 409, and an isolation sleeve 402 is fixedly disposed inside the receiving cavity 401. A stator mounting cavity 403 is formed between the isolation sleeve 402 and the cavity wall of the receiving cavity 401. A stator 404 is fixedly disposed inside the stator mounting cavity 403. A rotor mounting cavity 405 is formed inside the isolation sleeve 402, and a rotor 406 is rotatably disposed inside the rotor mounting cavity 405. The rotor 406 is fixed to the drive shaft 112 inside the reversing pump 100. The oil outlet 302 is sealed to the isolation sleeve 402, thereby realizing the communication between the oil outlet 302 and the rotor mounting cavity 405. The rotor mounting cavity 405 is connected to the reversing channel 101.

[0052] In this embodiment, the stator 404 and rotor 406 are coupled by a magnetic field, realizing non-contact power transmission, avoiding friction loss and leakage problems caused by traditional mechanical seals, and extending the service life of the equipment. The presence of the isolation sleeve 402 not only realizes the separation between the stator 404 and rotor 406, but also optimizes the flow path of the oil: after the oil flows out of the oil storage tank 300, it enters the rotor mounting cavity 405 inside the isolation sleeve 402 through the oil outlet 302 and then flows to the reversing pump 100, reducing unnecessary resistance loss and improving the overall efficiency of the system.

[0053] It is worth mentioning that, in order to facilitate the processing of the internal pipelines within the reversing pump 100, the reversing pump 100 includes a pump head 114 and a pump body 115 that are fixedly connected.

[0054] In a further preferred embodiment, a circuit control board 407 is fixedly disposed inside the stator mounting cavity 403, and a communication connection terminal 408 is disposed on the drive component 400 to communicate with the circuit control board 407.

[0055] In this embodiment, the circuit control board 407 is integrated into the stator mounting cavity 403, which not only reduces the need for external wiring, but also improves the integration and compactness of the system. The circuit control board 407 can analyze and process the collected data, and send or receive instructions to the external control system through the communication connection terminal 408 to achieve precise control of the hydraulic system.

[0056] Specifically, the isolation sleeve 402 is integrally provided with a connecting seat 107, the connecting seat 107 is provided with a connecting through hole 108 that communicates with the mounting cavity of the rotor 406, the other side of the connecting seat 107 is provided with a connecting groove 109, the connecting groove 109 is fixed with the reversing pump 100, and a connecting cavity is formed between the connecting groove 109 and the end face of the reversing pump 100. The connecting cavity is respectively connected to the connecting through hole 108 and the reversing channel 101, and the drive shaft 112 passes through the connecting seat 107 and extends into the reversing pump 100.

[0057] In this embodiment, a connecting seat 107 is integrally provided on the isolation sleeve 402, and a connecting through hole 108 communicating with the rotor mounting cavity 405 is provided on the connecting seat 107 to realize the communication between the reversing pump 100 and the oil storage tank 300. The connecting cavity, as a transition area, can also ensure the smooth transition of oil from the connecting through hole 108 to the reversing channel 101, avoiding resistance and leakage problems in oil flow.

[0058] In a further preferred embodiment, the reversing pump 100 is provided with a control chamber 110, and a gear set 111 is provided in the control chamber 110. The control chamber 110 is connected to two reversing channels 101 and controls the rotation direction of the gear set 111 to realize the switching of the oil circuit direction in the reversing channel 101. The drive gear in the gear set 111 is fixed to the drive shaft 112.

[0059] In this embodiment, the rotation of the gear set 111 (including a driving gear and a driven gear) allows for switching the oil flow direction between the two reversing channels 101. Integrating the control chamber 110 and the gear set 111 into the pump body 115 not only saves space but also reduces external piping connections, lowers the risk of leakage, and improves the reliability and stability of the system. When the gear set 111 rotates in one direction, oil enters the control chamber 110 from one reversing channel 101 and flows to the other reversing channel 101 after being processed by the gear set 111; conversely, when the gear set 111 rotates in the opposite direction, the oil flow direction changes accordingly.

[0060] When the oil pressure in the cylinder 200 is low, the check valve 106 will open according to the rotation direction of the gear set 111, using the pressure difference generated between the two reversing channels 101, so that the oil in the oil storage chamber 301 flows to the cylinder 200.

[0061] It is worth mentioning that the drive shaft 112 is connected to the pump body 115 by a sliding bearing 113, which allows the drive shaft 112 to rotate relative to the reversing pump 100 while also providing a sealing function.

[0062] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0064] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An integrated hydraulic transmission, characterized by The utility model relates to a kind of oil cylinder, including: Driving element; Reversing pump, the reversing passage is arranged in the reversing pump, the driving element is connected with the reversing pump driving; Oil cylinder, the reversing pump is fixed in the end of the oil cylinder, and the reversing passage is communicated with the oil cylinder, the transmission cavity is arranged in the oil cylinder, the oil pipe is arranged in the transmission cavity, the cavity wall of the transmission cavity and the oil pipe form oil space, one end of the oil pipe and one end of the oil space are communicated, the other end of the oil pipe and the other end of the oil space are communicated by the reversing passage; Magnetic force part, the magnetic force part is located in the oil space, and its sleeve is on the oil pipe and can move relative to the oil pipe, the outside of the oil cylinder is provided with transmission part that can move relative to the oil cylinder, the transmission part is magnetically connected with the magnetic force part.

2. An integrated hydraulic transmission as claimed in claim 1, wherein, The magnetic force part includes a plurality of first magnets distributed along the length direction of the oil pipe;The transmission part includes a plurality of second magnets distributed along the length direction of the oil cylinder, the first magnet and the corresponding second magnet are magnetically connected with each other.

3. An integrated hydraulic transmission as claimed in claim 1, wherein, The reversing pump and the oil cylinder are fixedly provided with a connection port, two overflow cavities are arranged in the connection port, an overflow valve is arranged in the overflow cavity, the number of the reversing passage is two, and the overflow cavity is communicated with the corresponding reversing passage.

4. An integrated hydraulic transmission as claimed in claim 3, wherein, It also includes an oil storage tank, the oil storage tank is provided with an oil storage cavity, the oil storage cavity stores oil, and the oil storage cavity is communicated with the reversing pump.

5. An integrated hydraulic transmission as claimed in claim 4, wherein, The reversing pump is provided with a return pipe, and the two ends of the return pipe are respectively communicated with the oil storage cavity and the overflow cavity.

6. An integrated hydraulic transmission as claimed in claim 4, wherein, The reversing pump is provided with a one-way valve, the one-way valve is arranged on the communication pipeline between the oil storage cavity and the two reversing passages, and the one-way valve can realize the one-way flow of the oil storage cavity to the reversing passage.

7. An integrated hydraulic transmission as claimed in claim 4, wherein, The oil storage tank includes an oil outlet communicated with the oil storage cavity, the driving element includes a housing fixedly connected with the oil storage tank, the housing forms an accommodation cavity, the accommodation cavity is fixedly provided with a isolation sleeve, the isolation sleeve and the cavity wall of the accommodation cavity form a stator mounting cavity, the stator mounting cavity is fixedly provided with a stator, the isolation sleeve forms a rotor mounting cavity, the rotor mounting cavity is rotatably provided with a rotor, the rotor is fixed with a transmission shaft in the reversing pump, the oil outlet is sealingly connected with the isolation sleeve, the oil outlet and the rotor mounting cavity are communicated, and the rotor mounting cavity is communicated with the reversing passage.

8. An integrated hydraulic transmission as claimed in claim 7, wherein, The stator mounting cavity is fixedly provided with a circuit control board, and the driving element is provided with a communication connection end in communication connection with the circuit control board.

9. An integrated hydraulic transmission as claimed in claim 7, wherein, The isolation sleeve is integrally provided with a connecting seat, the connecting seat is provided with a connecting through hole communicated with the rotor mounting cavity, the other side of the connecting seat is provided with a connecting groove, the connecting groove is fixed with the reversing pump, the connecting groove and the end surface of the reversing pump form a connecting cavity, the connecting cavity is communicated with the connecting through hole and the reversing passage respectively, and the transmission shaft passes through the connecting seat and extends into the reversing pump.

10. An integrated hydraulic transmission as claimed in claim 7, wherein, The reversing pump is provided with a control cavity, a gear set is arranged in the control cavity, the control cavity is communicated with two reversing channels, the rotating direction of the gear set is controlled, the direction of the oil path in the reversing channel is switched, and the driving gear in the gear set is fixed with the transmission shaft.

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