Hydraulic cylinder with buffer and flow limiting capacity

Abstract

The utility model relates to a kind of hydraulic cylinder with buffer current-limiting capacity, including oil cylinder body, current-limiting mechanism is arranged on the oil cylinder body, oil pipe is arranged on the current-limiting mechanism, heat dissipation mechanism and controller are arranged on the oil cylinder body, the current-limiting mechanism includes conduit, the conduit is fixedly installed on the cylinder barrel of oil cylinder body, one end of the conduit is fixedly installed with box, the oil pipe is fixedly installed in the side of box, the box top end is fixedly installed with support, the inner wall of the support is fixedly installed with motor. By setting current-limiting mechanism, effectively control hydraulic oil flow, realize better buffering effect, solve the problem that the impact force of traditional hydraulic cylinder transmission rod is too large during extension and retraction, by setting heat dissipation mechanism, for monitoring the temperature of hydraulic cylinder surface, when temperature is too high, can be started by controller fan to effectively blow and radiate heat, conducive to long-term work of hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, specifically to a hydraulic cylinder with buffering and flow limiting capabilities. Background Technology

[0002] In the field of hydraulic transmission technology, hydraulic cylinders, as core actuators, are widely used in various types of mechanical equipment.

[0003] Traditional hydraulic cylinders have significant drawbacks in actual operation. When the transmission rod extends and retracts, the lack of effective hydraulic oil flow control often results in excessive impact force. This not only damages the internal structure of the cylinder, shortening its service life, but also affects the operational stability and precision of the entire mechanical system, increasing equipment maintenance costs and the risk of failure. Simultaneously, during operation, the circulation of hydraulic oil and mechanical friction generate a large amount of heat, causing the cylinder surface temperature to rise. Excessive temperature alters the viscosity of the hydraulic oil, reducing its lubricating performance, accelerating the aging of cylinder seals, and potentially even causing thermal deformation of internal cylinder components, severely impacting the normal operating performance and longevity of the hydraulic cylinder.

[0004] Therefore, a hydraulic cylinder with buffering and flow limiting capabilities is proposed to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a hydraulic cylinder with buffering and flow limiting capabilities.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder with buffering and flow limiting capability, comprising a cylinder body, a flow limiting mechanism provided on the cylinder body, an oil pipe provided on the flow limiting mechanism, a heat dissipation mechanism and a controller provided on the cylinder body, the flow limiting mechanism including a conduit, the conduit fixedly installed on the cylinder barrel of the cylinder body, a housing fixedly installed at one end of the conduit, the oil pipe fixedly installed on the side of the housing, a bracket fixedly installed at the top of the housing, a motor fixedly installed on the inner wall of the bracket, the rotating shaft end of the motor penetrating through the inner wall of the housing and a rotating block fixedly installed thereon, the rotating block rotating on the inner wall of the housing, and a through hole provided on the rotating block;

[0007] The heat dissipation mechanism includes a box body, which is fixedly installed on the cylinder of the oil cylinder body. An air guide pipe is fixedly installed on the side of the box body and connected to the box body. A housing is fixedly installed at one end of the air guide pipe and a fan is fixedly installed on the inner wall of the housing.

[0008] Preferably, a pressure sensor is fixedly installed on the surface of the cylinder body, and the probe end of the pressure sensor is located in the inner wall of the cylinder body.

[0009] Preferably, the box body is spherical in shape, the inner cavity of the box body is spherical, the rotating block is spherical in shape, and the size of the rotating block is adapted to the inner cavity size of the box body.

[0010] Preferably, a heat-conducting plate is fixedly installed on the cylinder body. The heat-conducting plate is circular in shape, and there are several heat-conducting plates arranged linearly.

[0011] Preferably, the side of the box body is provided with an air outlet, the air outlet is square in shape, and both the air outlet and the inner wall of the shell are provided with dustproof nets.

[0012] Preferably, a temperature sensor is provided on the cylinder body, and a guide vane is fixedly installed on the inner wall of the air duct, the guide vane being rectangular in shape.

[0013] Compared with the prior art, this utility model provides a hydraulic cylinder with buffering and flow limiting capabilities, which has the following beneficial effects:

[0014] 1. This utility model effectively controls the flow of hydraulic oil by setting a flow limiting mechanism, thereby achieving a better buffering effect and solving the problem of excessive impact force during the extension and retraction of the transmission rod of the traditional hydraulic cylinder.

[0015] 2. This utility model is equipped with a heat dissipation mechanism to monitor the surface temperature of the hydraulic cylinder. When the temperature is too high, the controller can start the fan to effectively dissipate the heat, which is beneficial to the long-term operation of the hydraulic cylinder.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder with buffering and flow limiting capabilities proposed in this utility model.

[0018] Figure 2 This is a side view of the overall structure of a hydraulic cylinder with buffering and flow limiting capabilities proposed in this utility model.

[0019] Figure 3 This is a cross-sectional view of the air duct of a hydraulic cylinder with buffering and flow limiting capability proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of a heat-conducting plate for a hydraulic cylinder with buffering and flow-limiting capabilities proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of a flow limiting mechanism for a hydraulic cylinder with buffering and flow limiting capabilities proposed in this utility model.

[0022] In the diagram: 1. Cylinder body; 21. Box body; 22. Air outlet; 23. Temperature sensor; 24. Air duct; 25. Housing; 26. Fan; 27. Air guide plate; 28. Heat conduction plate; 31. Box body; 32. Conduit; 33. Pressure sensor; 34. Through hole; 35. Bracket; 36. Rotating block; 37. Motor; 4. Oil pipe; 5. Controller. Detailed Implementation

[0023] 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.

[0024] Example:

[0025] Please see Figure 1 - Figure 5This embodiment describes a hydraulic cylinder with buffering and flow-limiting capabilities, comprising a cylinder body 1. A flow-limiting mechanism is installed on the cylinder body 1 to effectively control the flow of hydraulic oil, achieving a better buffering effect and solving the problem of excessive impact force during the extension and retraction of the transmission rod in traditional hydraulic cylinders. An oil pipe 4 is installed on the flow-limiting mechanism for transporting hydraulic oil. A heat dissipation mechanism and a controller 5 are installed on the cylinder body 1. The heat dissipation mechanism monitors the surface temperature of the hydraulic cylinder. When the temperature is too high, the controller 5 can activate a fan 26 to effectively cool the cylinder, facilitating its long-term operation. The flow-limiting mechanism includes a conduit 32, which is fixedly installed on the cylinder barrel of the cylinder body 1. The conduit 32 serves to support the housing. The installation of 31: One end of the conduit 32 is fixedly installed with a housing 31. The housing 31 is designed to support the rotation of the rotating block 36. The oil pipe 4 is fixedly installed on the side of the housing 31. The top of the housing 31 is fixedly installed with a bracket 35. The bracket 35 is arched and is designed to support the installation of the motor 37. The inner wall of the bracket 35 is fixedly installed with the motor 37. The motor 37 is designed to drive the rotating block 36 to rotate, thereby controlling the size of the opening of the through hole 34 and facilitating the control of the flow of hydraulic oil. The shaft end of the motor 37 passes through the inner wall of the housing 31 and is fixedly installed with the rotating block 36. The rotating block 36 rotates on the inner wall of the housing 31. The rotating block 36 has a through hole 34. The through hole 34 facilitates the hydraulic oil to enter the conduit 32 through the through hole 34.

[0026] The heat dissipation mechanism includes a housing 21, which is fixedly installed on the cylinder of the cylinder body 1. The housing 21 is used to support the installation of the air guide pipe 24. The air guide pipe 24 is fixedly installed on the side of the housing 21. The cross-sectional shape of the air guide pipe 24 is an isosceles trapezoid. The air guide pipe 24 is connected to the housing 21. A housing 25 is fixedly installed at one end of the air guide pipe 24. The housing 25 is a square frame. The housing 25 is used to support the installation of the fan 26. The fan 26 is fixedly installed on the inner wall of the housing 25. The fan 26 has a blowing function.

[0027] A pressure sensor 33 is fixedly installed on the surface of the cylinder body 1. The probe end of the pressure sensor 33 is located in the inner wall of the cylinder barrel of the cylinder body 1. The pressure sensor 33 is set to monitor the pressure inside the cylinder body 1 so as to control the opening and closing of the through hole 34.

[0028] The housing 31 is spherical in shape, and the inner cavity of the housing 31 is spherical. The housing 31 is designed to support the rotation of the rotating block 36. The rotating block 36 is spherical in shape, and its size is adapted to the inner cavity size of the housing 31. The rotating block 36 is designed to support the opening of the through hole 34.

[0029] A heat-conducting plate 28 is fixedly installed on the cylinder body 1. The heat-conducting plate 28 is designed to absorb the heat of the cylinder body 1 and increase the contact area with the airflow. It also facilitates the formation of a channel to allow the airflow to circulate and dissipate heat from the cylinder body 1. The heat-conducting plate 28 is annular in shape and there are several heat-conducting plates 28 arranged linearly.

[0030] The side of the box 21 is provided with an air outlet 22. The air outlet 22 is square in shape. The air outlet 22 is designed to facilitate the discharge of gas inside the box 21. Both the air outlet 22 and the inner wall of the shell 25 are provided with dustproof nets to prevent debris from entering the box 21.

[0031] A temperature sensor 23 is installed on the cylinder body 1. The temperature sensor 23 facilitates the monitoring of the surface temperature of the cylinder body 1. A guide vane 27 is fixedly installed on the inner wall of the air duct 24. The guide vane 27 is rectangular in shape. The guide vane 27, under the action of the fan 26, facilitates the expansion of the air blowing range.

[0032] When the hydraulic cylinder is in use, when the transmission rod of the cylinder body 1 needs to move upward, hydraulic oil will enter the cylinder body 1 through the oil pipe 4, through hole 34 and conduit 32, and move upward by lifting the transmission rod through the piston. During this process, the pressure sensor 33 will monitor the pressure change of the hydraulic oil in the cylinder body 1. When the pressure is too high, the pressure sensor 33 will transmit a signal to the controller 5. After receiving the signal, the controller 5 will start the motor 37. The motor 37 drives the rotating block 36 to rotate. When the rotating block 36 rotates, it will drive the through hole 34 to rotate, so as to control the opening size of the through hole 34, thereby controlling the flow of hydraulic oil and avoiding the problem of excessive hydraulic oil pressure in the hydraulic cylinder, which would lead to excessive impact force during the extension process. Similarly, when the transmission rod is retracted, the motor 37 can be controlled by the pressure sensor 33 and the controller 5 to avoid the problem of excessive impact force during the retraction process.

[0033] Furthermore, a temperature sensor 23 is provided to facilitate monitoring of the surface temperature of the hydraulic cylinder. When the temperature is too high, the temperature sensor 23 transmits a signal to the controller 5. After receiving the signal, the controller 5 will start the fan 26. The fan 26 guides the airflow into the air duct 24 and diffuses it through the air guide vanes 27 in the air duct 24. The diffused airflow will enter the channel formed by the heat-conducting plates 28 and finally be discharged from the air outlet 22. The heat-conducting plates 28 are designed to absorb the heat of the cylinder body 1 and increase the contact area with the airflow. They also facilitate the formation of a channel to allow the airflow to circulate and flow, so as to fully blow and dissipate heat from the cylinder body 1.

[0034] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] 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 hydraulic cylinder with buffering and flow limiting capability, comprising a cylinder body (1), characterized in that: The cylinder body (1) is provided with a flow limiting mechanism, the flow limiting mechanism is provided with an oil pipe (4), and the cylinder body (1) is provided with a heat dissipation mechanism and a controller (5). The flow limiting mechanism includes a conduit (32), which is fixedly installed on the cylinder of the cylinder body (1). A housing (31) is fixedly installed at one end of the conduit (32). The oil pipe (4) is fixedly installed on the side of the housing (31). A bracket (35) is fixedly installed at the top of the housing (31). A motor (37) is fixedly installed on the inner wall of the bracket (35). The shaft end of the motor (37) passes through the inner wall of the housing (31) and a rotating block (36) is fixedly installed thereon. The rotating block (36) rotates on the inner wall of the housing (31). A through hole (34) is provided on the rotating block (36). The heat dissipation mechanism includes a box body (21), which is fixedly installed on the cylinder of the cylinder body (1). A duct (24) is fixedly installed on the side of the box body (21). The duct (24) is connected to the box body (21). A housing (25) is fixedly installed at one end of the duct (24). A fan (26) is fixedly installed on the inner wall of the housing (25).

2. A hydraulic cylinder with buffering and flow-limiting capability according to claim 1, characterized in that: A pressure sensor (33) is fixedly installed on the surface of the cylinder body (1), and the probe end of the pressure sensor (33) is located in the inner wall of the cylinder of the cylinder body (1).

3. A hydraulic cylinder with buffering and flow-limiting capability according to claim 1, characterized in that: The box (31) is spherical in shape, the inner cavity of the box (31) is spherical, the rotating block (36) is spherical in shape, and the size of the rotating block (36) is adapted to the inner cavity size of the box (31).

4. A hydraulic cylinder with buffering and flow-limiting capability according to claim 1, characterized in that: A heat-conducting plate (28) is fixedly installed on the cylinder body (1). The heat-conducting plate (28) is circular in shape. There are several heat-conducting plates (28), and the several heat-conducting plates (28) are arranged linearly.

5. A hydraulic cylinder with buffering and flow-limiting capability according to claim 1, characterized in that: The side of the box (21) is provided with an air outlet (22), which is a square hole. Both the air outlet (22) and the inner wall of the shell (25) are provided with dustproof nets.

6. A hydraulic cylinder with buffering and flow-limiting capability according to claim 1, characterized in that: A temperature sensor (23) is provided on the cylinder body (1), and a guide vane (27) is fixedly installed on the inner wall of the air duct (24). The guide vane (27) is rectangular in shape.

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