Buffering mechanical structure of liquid-gas composite buffering device

Abstract

The utility model provides a buffering mechanical structure of a liquid-gas composite buffering device, which comprises a buffering device, the buffering device comprises an outer telescopic cylinder sleeve and an inner telescopic cylinder sleeve, a magnetic signal receiving unit is arranged in the outer telescopic cylinder sleeve, a magnetic induction element is arranged at the tail end of the inner telescopic cylinder sleeve, and a guide support is arranged between the outer telescopic cylinder sleeve and the inner telescopic cylinder sleeve. One end of the outer telescopic cylinder sleeve is connected with the hydraulic buffering assembly, one end of the inner telescopic cylinder sleeve is connected with the inert gas reset assembly, a guide support is arranged between the hydraulic buffering assembly and the inert gas reset assembly, the axis of the buffering device is rigidly supported by the hydraulic buffering assembly and the inert gas reset assembly, and the outer portion of the buffering device is guided by the inner telescopic cylinder sleeve and the outer telescopic cylinder sleeve. Larger eccentric load can be borne; the inert gas reset assembly is added to effectively improve the reset success rate of the buffer device and shorten the reset time of the buffer device; the filling body can play a certain role in supporting and protecting, leakage of hydraulic oil can be avoided, the safety of the device is ensured, and the service life of the buffering device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic buffer technology, and in particular to a hydraulic-gas composite buffer device with a buffer mechanical structure. Background Technology

[0002] A crane mainly consists of a hoisting mechanism, a traveling mechanism, a luffing mechanism, a slewing mechanism, and a metal structure. The hoisting mechanism is the basic working mechanism of a crane, mostly composed of a hoisting system and a winch, although some use a hydraulic system to lift and lower heavy objects. The traveling mechanism is used to move heavy objects horizontally or adjust the crane's working position. It can be divided into a trolley traveling mechanism and a crane traveling mechanism, generally composed of a motor, a reducer, a brake, and wheels. However, when the brakes fail, due to inertia, the trolley and crane traveling mechanisms cannot brake, and the wheels will continue to move forward, easily leading to collisions. To avoid collisions, buffers are usually installed in the traveling mechanisms, such as the trolley rails, crane frame, and crane frame, to prevent direct impact between the traveling mechanism and the ends of the rails.

[0003] A search of the current domestic market reveals that, besides polyurethane types, the other two commonly used types are spring buffers and hydraulic buffers. Spring buffers have a strong "recoil force" and are unsuitable for high-speed mechanisms. Hydraulic buffers often experience medium leakage during high temperatures and collisions, causing hydraulic oil to drip onto the crane rails, leading to crane slippage and loss of control of the lifting equipment. Hydraulic oil dripping into the smelting area and subsequent workshop workstations can also easily cause fire accidents. Furthermore, once hydraulic oil leaks, the buffer may fail and retract, potentially leading to a collision between adjacent cranes and other safety issues. However, the high frequency of buffer replacement comes at the cost of substantial losses in manpower and spare parts expenditure for maintenance.

[0004] Patent document CN219449089U discloses a crane buffer device, including a housing, hydraulic oil, and a piston. A first fixing frame is fixed to one side of the housing, and a second fixing frame is fixed to the outer side of the housing. Hydraulic oil is disposed inside the housing, and a bearing is fixed to one side inside the housing. The noise reduction structure includes a rubber insert, a slot, noise reduction foam, a rubber shell, and a rubber pad. The slot is located inside the impact head on one side, and a rubber insert is inserted into the slot. This utility model uses a first clamp to fix a cloth cover to one end of the housing, and then uses a second clamp to install one end of the cloth cover on the outside of the impact head, so that the cloth cover isolates the push rod from the external environment. This achieves the isolation and protection function of the device, prevents dust from adhering to the surface of the push rod, keeps the surface of the push rod smooth and clean, reduces wear between the push rod and the bearing, and improves the functionality of the device.

[0005] In the above solutions, the buffer device has poor reset effect and long reset time, weak ability to withstand eccentric loads, insufficient side protection, inability to monitor and record the device, and inability to provide timely early warning. Therefore, it is necessary to provide a liquid-gas composite buffer device buffer mechanical structure to solve the shortcomings of the existing technology. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a buffer mechanical structure for a liquid-gas composite buffer device.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A hydraulic-gas composite buffer device with a buffering mechanical structure includes a buffer device comprising an outer telescopic cylinder sleeve and an inner telescopic cylinder sleeve. The outer telescopic cylinder sleeve contains a magnetic signal receiving unit, and the end of the inner telescopic cylinder sleeve contains a magnetic induction element. The magnetic signal receiving unit receives the magnetic signal emitted by the magnetic induction element and outputs the result to a terminal. A guide support is provided between the outer and inner telescopic cylinder sleeves. One end of the outer telescopic cylinder sleeve is connected to a hydraulic buffer assembly, and one end of the inner telescopic cylinder sleeve is connected to an inert gas reset assembly. Guide supports are provided between the hydraulic buffer assembly and the inert gas reset assembly. The buffer device's shaft is rigidly supported by the hydraulic buffer assembly and the inert gas reset assembly, and guided externally by the inner and outer telescopic cylinder sleeves, providing a dual guiding function. This allows it to withstand greater eccentric loads and improve its service life.

[0009] The present invention is further configured such that the hydraulic buffer assembly includes:

[0010] The cylinder body has one end connected to the inner side of the outer telescopic cylinder sleeve, and the cylinder body is provided with a hydraulic oil chamber.

[0011] The piston rod is installed inside the cylinder body, and a piston head is provided at the end of the piston rod.

[0012] The present invention is further configured such that the inert gas reset assembly includes:

[0013] The cylinder body has one end connected to the inner side of the inner telescopic cylinder liner, and the other end of the cylinder body extends into the oil cylinder body. The cylinder body is inserted by the piston rod and piston head. A guide support is provided between the outer wall of the cylinder body and the oil cylinder body. A nitrogen chamber is provided inside the cylinder body.

[0014] The present invention is further provided with a support plate fixedly provided on the inner side of the inner telescopic cylinder liner.

[0015] The present invention is further configured such that a filler is provided between the outer telescopic cylinder sleeve and the hydraulic buffer assembly, one end of the filler is connected to the inner side of the outer telescopic cylinder sleeve, and the other end of the filler abuts against the support plate.

[0016] The present invention is further configured such that the filler is a polymer composite elastomer, and is arranged in a ring-shaped circumferential direction, with a spring spirally arranged inside the filler.

[0017] The present invention is further configured such that the inner telescopic cylinder liner and the cylinder body surface are chrome plated.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. The present invention is guided by the guide support between the inner telescopic cylinder liner and the outer telescopic cylinder liner, as well as the guide support between the cylinder body and the oil cylinder body. The double guidance enables the buffer device to withstand a larger eccentric load and improves the service life of the buffer device.

[0020] 2. This utility model has a spring and a nitrogen chamber inside. The addition of the spring and nitrogen chamber effectively improves the reset success rate of the buffer device and shortens its reset time.

[0021] 3. The present invention has an internal filler, which can make the buffering process more stable, and can also play a certain supporting and protective role, prevent hydraulic oil leakage, ensure the safety and practicality of the buffer device, and extend the service life of the buffer device.

[0022] 4. The magnetic signal receiving unit of this utility model can receive the magnetic signal emitted by the magnetic induction element and output the result to the terminal. The output result is the relative position of the magnetic signal receiving unit and the magnetic induction element. It can not only record the number of collisions to prevent the device from exceeding its service life, but also monitor whether the device is restored and reset to avoid failure to provide timely warnings. Attached Figure Description

[0023] Figure 1 This is a front view of the present invention.

[0024] Figure 2 This is a cross-sectional view of the present invention.

[0025] In the figure, 1. outer telescopic cylinder liner, 11. magnetic signal receiving unit, 2. inner telescopic cylinder liner, 21. magnetic induction element, 3. guide support, 41. cylinder body, 42. hydraulic oil chamber, 43. piston rod, 44. piston head, 51. cylinder body, 52. nitrogen chamber, 6. support plate, 7. filler, 8. spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] Example 1:

[0028] In this embodiment, as Figure 1-2 As shown, this utility model proposes a hydraulic-gas composite buffer device with a buffering mechanical structure, including a buffer device comprising an outer telescopic cylinder sleeve 1 and an inner telescopic cylinder sleeve 2. A magnetic signal receiving unit 11 is installed inside the outer telescopic cylinder sleeve, with one end connected to the outer telescopic cylinder sleeve. A magnetic induction element 21 is installed at the end of the inner telescopic cylinder sleeve, connected to the end of the inner telescopic cylinder sleeve. The magnetic signal receiving unit receives the magnetic signal emitted by the magnetic induction element and outputs the result to the terminal. The output result specifically represents the relative position of the magnetic signal receiving unit and the magnetic induction element. This not only records the number of impacts to prevent the device from exceeding its service life but also monitors whether the device has returned to its reset state, preventing failures from going unnoticed. A guide support 3 is provided between the outer and inner telescopic cylinder sleeves. One end of the outer telescopic cylinder sleeve is connected to a hydraulic buffer assembly, and one end of the inner telescopic cylinder sleeve is connected to an inert gas reset assembly. A guide support is provided between the hydraulic buffer assembly and the inert gas reset assembly. The buffer device's shaft is rigidly supported by the hydraulic buffer assembly and the inert gas reset assembly, and guided externally by the inner and outer telescopic cylinder sleeves, providing a dual guiding function. This allows it to withstand greater eccentric loads and improve its service life. The magnetic signal receiving unit and magnetic induction element are existing products and technologies, and will not be described in detail here.

[0029] In this embodiment, the hydraulic buffer assembly is further configured to include a cylinder body 41 and a piston rod 43. One end of the cylinder body is connected to the inner side of the outer telescopic cylinder sleeve, and a hydraulic oil chamber 42 is provided inside the cylinder body. The piston rod is installed inside the cylinder body, and a piston head 44 is provided at the end of the piston rod.

[0030] In this embodiment, the inert gas reset assembly includes a cylinder body 51. One end of the cylinder body is connected to the inner side of the inner telescopic cylinder sleeve, and the other end of the cylinder body extends into the hydraulic cylinder body. The cylinder body is penetrated by a piston rod and a piston head. A guide support is provided between the outer wall of the cylinder body and the hydraulic cylinder body, and a nitrogen chamber 52 is provided inside the cylinder body. The addition of the inert gas reset assembly effectively improves the reset success rate of the buffer device and shortens its reset time.

[0031] In this embodiment, a support plate 6 is further provided on the inner side of the inner telescopic cylinder liner.

[0032] In this embodiment, a filler 7 is further provided between the outer telescopic cylinder sleeve and the hydraulic buffer assembly. One end of the filler is connected to the inner side of the outer telescopic cylinder sleeve, and the other end of the filler abuts against the support plate. During use, the filler and the spring are compressed by the support plate, thereby contracting to absorb the impact force and generate elastic reaction force. The addition of the filler can make the buffering process more stable, and can also play a certain supporting and protective role, avoiding hydraulic oil leakage, ensuring the safety and practicality of the buffer device, and extending the service life of the buffer device.

[0033] In this embodiment, the filler is further configured as a polymer composite elastomer, arranged in a ring shape, and a spring 8 is spirally arranged inside the filler. The spring can be a 60Si2MnA high-strength spring. The addition of the spring effectively improves the reset success rate of the buffer device and shortens its reset time.

[0034] In this embodiment, the inner telescopic cylinder liner and cylinder block are further configured to be chrome-plated. Chrome plating can enhance surface hardness, improve surface quality, improve wear resistance, and extend service life.

[0035] The working principle of the hydraulic-gas composite buffer device is as follows: when the buffer device is suddenly impacted, the hydraulic buffer component, the inert gas reset component, and the spring-loaded filler simultaneously absorb the impact kinetic energy. The hydraulic oil pushes the piston and compresses the inert gas to generate a certain damping reaction force. The filler and spring are compressed to generate elastic reaction force. After the impact, the high-pressure inert gas in the inert gas chamber, the filler, and the spring need to release the internally absorbed elastic potential energy and push the inner and outer telescopic cylinders of the buffer to complete the reset action of the buffer. During this process, the relative position of the magnetic signal receiving unit and the magnetic induction element changes. The magnetic signal receiving unit receives the magnetic signal emitted by the magnetic induction element and outputs the result to the terminal to record the number of impacts, preventing the device from exceeding its service life. It can also monitor whether the device has reset, so as to avoid failure and timely warning.

[0036] In the description of this utility model, it should be noted that when terms such as "upper," "lower," "inner," "outer," "left," and "right" appear to indicate orientation or positional relationships, they should be understood as being based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product of this utility model is in use, or the orientation or positional relationships commonly understood by those skilled in the art. These terms are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, when terms such as "first" and "second" appear, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that unless otherwise explicitly specified and limited, terms such as "installation," "setting," and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A buffering mechanical structure for a liquid-gas composite buffer device, comprising a buffer device, characterized in that, The buffer device includes an outer telescopic cylinder sleeve and an inner telescopic cylinder sleeve. The outer telescopic cylinder sleeve is equipped with a magnetic signal receiving unit, and the end of the inner telescopic cylinder sleeve is equipped with a magnetic induction element. The magnetic signal receiving unit receives the magnetic signal emitted by the magnetic induction element and outputs the result to the terminal. A guide support is provided between the outer and inner telescopic cylinder sleeves. One end of the outer telescopic cylinder sleeve is connected to the hydraulic buffer assembly, and one end of the inner telescopic cylinder sleeve is connected to the inert gas reset assembly. The hydraulic buffer assembly and the inert gas reset assembly are equipped with guide supports. The shaft of the buffer device is rigidly supported by the hydraulic buffer assembly and the inert gas reset assembly, and guided externally by the inner and outer telescopic cylinder sleeves. It has a dual guiding function, can withstand greater eccentric loads, and improves service life.

2. The buffering mechanical structure of the liquid-gas composite buffer device according to claim 1, characterized in that, The hydraulic buffer assembly includes: The cylinder body has one end connected to the inner side of the outer telescopic cylinder sleeve, and the cylinder body is provided with a hydraulic oil chamber. The piston rod is installed inside the cylinder body, and a piston head is provided at the end of the piston rod.

3. The buffer mechanical structure of the liquid-gas composite buffer device according to claim 2, characterized in that, The inert gas reset assembly includes: The cylinder body has one end connected to the inner side of the inner telescopic cylinder liner, and the other end of the cylinder body extends into the oil cylinder body. The cylinder body is inserted by the piston rod and piston head. A guide support is provided between the outer wall of the cylinder body and the oil cylinder body. A nitrogen chamber is provided inside the cylinder body.

4. The buffering mechanical structure of the liquid-gas composite buffer device according to claim 1, characterized in that, A support plate is fixedly installed on the inner side of the inner telescopic cylinder liner.

5. The buffering mechanical structure of the liquid-gas composite buffer device according to claim 4, characterized in that, A filler is provided between the outer telescopic cylinder sleeve and the hydraulic buffer assembly. One end of the filler is connected to the inner side of the outer telescopic cylinder sleeve, and the other end of the filler abuts against the support plate.

6. The buffering mechanical structure of the liquid-gas composite buffer device according to claim 1, characterized in that, The filling material contains a spiral with a spring.

7. The buffering mechanical structure of the liquid-gas composite buffer device according to claim 3, characterized in that, The inner telescopic cylinder liner and cylinder block surface are chrome plated.

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