Hydraulic prop connecting device

Abstract

The invention provides a hydraulic prop connecting device, which is arranged between two adjacent hydraulic props, and comprises a connecting rod fixedly arranged on a base of each hydraulic prop, and the connecting rod extends along the direction in which a plurality of hydraulic props are arranged at intervals; the buffering assembly comprises rotating discs and buffering rods, the rotating discs are arranged at the ends, close to each other, of every two adjacent connecting rods respectively, the rotating discs can rotate relative to the connecting rods, the buffering rods extend in the direction that the hydraulic props are arranged at intervals, the buffering rods are arranged between every two adjacent rotating discs in a penetrating mode, and the two rotating discs are arranged on the buffering rods in a sliding mode; the buffer rods are sleeved with elastic pieces, and the elastic pieces are located between the two adjacent rotating discs so as to provide elastic force for the rotating discs to drive the two rotating discs to move in the direction away from each other or the direction close to each other. According to the technical scheme, the problem that in the prior art, a hydraulic prop connecting device is poor in stability can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of coal mining, and in particular to a hydraulic support connection device. Background Art

[0002] The steeply inclined coal seam is the main mining seam in many mining areas or mines. There are many risks and hidden dangers in the mining process of steeply inclined coal seams, such as the risk of top coal crushing above the hydraulic support and the accident of the support falling. Therefore, a connecting device is usually set between two adjacent hydraulic supports on the working face to connect multiple hydraulic supports together to prevent the hydraulic supports from falling.

[0003] In the prior art, the connecting device is usually an iron chain or a connecting rod, and the two ends of the iron chain or the connecting rod are respectively connected to two hydraulic pillars to improve the stability of multiple hydraulic pillars. However, when the top coal is broken and collapsed, it may cause a large impact on the hydraulic pillars in an instant. The connecting device is easily damaged under the instantaneous impact, resulting in failure of the connection of the connecting device and affecting the connection effect between the hydraulic pillars. Summary of the invention

[0004] The invention provides a hydraulic prop connection device to solve the problem of poor stability of the hydraulic prop connection device in the prior art.

[0005] The present invention provides a hydraulic support connection device, which is arranged between two adjacent hydraulic supports, and the hydraulic support connection device includes: a connecting rod, which is fixedly arranged on the base of each hydraulic support, and the connecting rod extends along the direction in which a plurality of hydraulic supports are arranged at intervals; a buffer assembly, the buffer assembly includes a turntable and a buffer rod, and the ends of two adjacent connecting rods close to each other are respectively provided with turntables, and the turntables can rotate relative to the connecting rods, and the buffer rod extends along the direction in which the plurality of hydraulic supports are arranged at intervals, and the buffer rod is inserted between two adjacent turntables, and the two turntables are slidably arranged on the buffer rod, and an elastic member is sleeved on the buffer rod, and the elastic member is located between two adjacent turntables to provide the turntable with an elastic force that drives the two turntables to move in a direction away from each other or in a direction close to each other.

[0006] Furthermore, a plurality of buffer rods are provided, a plurality of through holes are provided on the turntable, the plurality of through holes are arranged at intervals along the circumferential direction on the end surface of the turntable, the plurality of buffer rods are arranged in one-to-one correspondence with the plurality of through holes, and the through holes are used for passing the buffer rods.

[0007] Furthermore, the inner diameter of the through hole is greater than the diameter of the buffer rod.

[0008] Furthermore, the plurality of through holes are symmetrical around the axis of the turntable.

[0009] Furthermore, a threaded structure is provided on the surface of the buffer rod, and a first nut and a second nut are sleeved on the buffer rod. The first nut and the second nut are spaced apart along the extension direction of the buffer rod, and the first nut and the second nut are both threadably matched with the threaded structure. The elastic member includes a first spring and a second spring, and the first spring is located between the first nut and a rotating disk on a side of the first nut facing away from the second nut, and the second spring is located between the second nut and a rotating disk on a side of the second nut facing away from the first nut.

[0010] Furthermore, a first limit block is arranged on the buffer rod, the first limit block is fixedly arranged in the middle part of the buffer rod, and the first nut and the second nut are respectively arranged on both sides of the first limit block.

[0011] Furthermore, second limit blocks are provided at both ends of the buffer rod, and the two turntables are located between the two second limit blocks.

[0012] Furthermore, a connecting seat is provided between the rotating disk and the connecting rod, the connecting seat is fixedly provided at the end of the connecting rod, a rotating groove is provided on the outer side wall of the connecting seat along the circumferential direction, and the rotating disk is rotatably provided in the rotating groove.

[0013] Furthermore, a plurality of balls are arranged between the end surfaces of the rotating disk that are arranged opposite to each other along the thickness and the side walls of the rotating groove.

[0014] Furthermore, the width of the rotating groove is greater than the thickness of the rotating disk, and the rotating disk can move in the rotating groove along the width direction of the rotating groove.

[0015] Applying the technical solution of the present application, the hydraulic support connection device includes a connecting rod and a buffer assembly, and the buffer assembly is arranged between two adjacent connecting rods, which can buffer the relative movement of two adjacent hydraulic supports. Specifically, when the top coal slides or other accidents cause the working surface space to change, the hydraulic support will tilt sideways. At this time, the spacing between the two adjacent hydraulic supports changes. The two connecting rods are connected by the buffer assembly to keep the hydraulic support upright, thereby improving the stability of the overall structure between the multiple hydraulic supports; and when the two turntables are close to or away from each other, the elastic member can be elastically deformed along the buffer rod, which can absorb and disperse the lateral impact force, reduce the instantaneous force of the buffer assembly, and improve the safety and stability of heavy machinery operations such as coal mining. In practical applications, this design, especially in working surfaces with unstable coal seams or complex geological conditions, can significantly alleviate the instantaneous impact on the connection device caused by the movement of the hydraulic support caused by changes in coal seam pressure or mechanical movement, ensure the connection strength of the hydraulic support connection device, and reduce the risk of damage to the hydraulic support connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram showing the structure of the connection between the hydraulic support connecting device provided by the present invention and the hydraulic support;

[0018] Figure 2 A schematic structural diagram of a connecting socket provided by the present invention is shown;

[0019] Figure 3 A schematic diagram showing the installation position of the hydraulic support connection device provided by the present invention on the hydraulic support.

[0020] The above drawings include the following reference numerals:

[0021] 01. Hydraulic prop; 02. Perforation;

[0022] 10. Connecting rod;

[0023] 20. Buffer component;

[0024] 21. Turntable;

[0025] 22. buffer rod; 221. first nut; 222. second nut;

[0026] 231, first spring; 232, second spring;

[0027] 24. First limit block; 25. Second limit block;

[0028] 30. Connecting seat; 31. Rotating groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1As shown, an embodiment of the present invention provides a hydraulic support connection device, which is arranged between two adjacent hydraulic supports 01, and the hydraulic support connection device includes a connecting rod 10 and a buffer assembly 20. Among them, the connecting rod 10 is fixedly arranged on the base of each hydraulic support 01, and the connecting rod 10 extends along the direction in which the multiple hydraulic supports 01 are arranged at intervals. The buffer assembly 20 includes a turntable 21 and a buffer rod 22, and the ends of the two adjacent connecting rods 10 that are close to each other are respectively provided with turntables 21, and the turntables 21 can rotate relative to the connecting rod 10, and the buffer rod 22 extends along the direction in which the multiple hydraulic supports 01 are arranged at intervals, and the buffer rod 22 is inserted between the two adjacent turntables 21, and the two turntables 21 can be slidably arranged on the buffer rod 22, and the buffer rod 22 is sleeved with an elastic member, and the elastic member is located between the two adjacent turntables 21, so as to provide the turntables 21 with an elastic force to drive the two turntables 21 to move in a direction away from each other or in a direction close to each other.

[0031] Applying the technical solution of the present application, the hydraulic support connection device includes a connecting rod 10 and a buffer assembly 20. The buffer assembly 20 is arranged between two adjacent connecting rods 10, and can buffer the relative movement of two adjacent hydraulic supports 01. Specifically, when the top coal slides or other accidents cause the working surface space to change, the hydraulic support 01 will fall sideways. At this time, the spacing between the two adjacent hydraulic supports 01 changes. The two connecting rods 10 are connected by the buffer assembly 20 to keep the hydraulic support 01 upright, thereby improving the stability of the overall structure between the multiple hydraulic supports 01; and when the two turntables 21 are close to or away from each other, the elastic member can be elastically deformed along the buffer rod 22, which can absorb and disperse the lateral impact force, reduce the instantaneous force of the buffer assembly 20, and improve the safety and stability of heavy machinery operations such as coal mining. In practical applications, this design, especially in working surfaces with unstable coal seams or complex geological conditions, can significantly alleviate the instantaneous impact of the hydraulic support 01 caused by the change of coal seam pressure or mechanical movement on the connection device, ensure the connection strength of the hydraulic support connection device, and reduce the risk of damage to the hydraulic support connection device.

[0032] In the actual production environment underground in a coal mine, the hydraulic support 01 may be tilted in a direction perpendicular to the spacing between the multiple hydraulic supports 01, and the postures of two adjacent hydraulic supports 01 may not be completely aligned. When inserting the buffer rod 22, a certain error may occur, resulting in the buffer rod 22 being unable to be accurately installed between the two turntables 21. In the present application, by setting a rotatable turntable 21, the installation posture of the buffer rod 22 can be adjusted by rotating the turntable 21, which facilitates the assembly of the buffer assembly 20. Under the condition of frequently adjusting the position of the hydraulic support 01, this design can improve the flexibility and efficiency of the operation.

[0033] Specifically in the present application, a plurality of buffer rods 22 are provided, a plurality of perforations are provided on the turntable 21, and the plurality of perforations are provided at intervals along the circumferential direction on the end surface of the turntable 21. The plurality of buffer rods 22 are provided in one-to-one correspondence with the plurality of perforations, and the perforations are used to penetrate the buffer rods 22. Through the above arrangement, the design of the plurality of buffer rods 22 can improve the buffering effect of the buffer rods 22, and avoid the problem of overloading of a single buffer rod 22 by dispersing the pressure, thereby improving the reliability and service life of the entire buffer assembly 20 and ensuring the safe operation of the equipment.

[0034] Specifically, the number of the buffer rods 22 may be 2, 3, 4 or 5.

[0035] Furthermore, the inner diameter of the perforation is larger than the diameter of the buffer rod 22. Since the hydraulic prop 01 usually does not only make the turntable 21 move linearly along the buffer rod 22 when tipping over, but makes the turntable 21 deflect while moving linearly, in order to prevent the buffer assembly 20 from being subjected to instantaneous impact and the buffer rod 22 from being subjected to bending moment and breaking, the present application sets the inner diameter of the perforation to be larger than the diameter of the buffer rod 22. When the turntable 21 deflects during movement, the turntable 21 does not directly apply bending moment to the buffer rod 22, but the turntable 21 contacts the buffer rod 22 after being buffered by the elastic member, thereby reducing the instantaneous impact of the turntable 21 on the buffer rod 22, thereby improving the structural strength of the buffer assembly 20 and increasing the service life of the buffer assembly 20.

[0036] Specifically in the present application, the inner diameter of the perforation may be 1.2 times, 1.3 times or 1.4 times the diameter of the buffer rod 22 , and may be specifically set according to the spacing between two adjacent hydraulic struts 01 .

[0037] Specifically, the plurality of perforations are symmetrical around the axis of the turntable 21. Through the above arrangement, the buffer assembly 20 can evenly distribute the torque applied by the turntable 21 to the buffer rod 22, thereby reducing possible equipment damage caused by uneven force distribution.

[0038] In a specific embodiment of the present application, a threaded structure is provided on the surface of the buffer rod 22, and a first nut 221 and a second nut 222 are sleeved on the buffer rod 22. The first nut 221 and the second nut 222 are spaced apart along the extension direction of the buffer rod 22. The first nut 221 and the second nut 222 are both threadedly matched with the threaded structure. The elastic member includes a first spring 231 and a second spring 232. The first spring 231 is located between the first nut 221 and the turntable 21 on the side of the first nut 221 away from the second nut 222, and the second spring 232 is located between the second nut 222 and the turntable 21 on the side of the second nut 222 away from the first nut 221. In this embodiment, the first spring 231 and the second spring 232 can buffer the movement of the rotating disk 21. When the hydraulic support 01 does not fall, the first spring 231 and the second spring 232 can be in the initial state. When the two hydraulic supports 01 drive the two rotating disks 21 to be relatively close, the first spring 231 and the second spring 232 can be compressed to absorb kinetic energy to buffer the falling of the hydraulic support 01; when the two hydraulic supports 01 drive the two rotating disks 21 to be relatively far away, the first spring 231 and the second spring 232 can be stretched to absorb kinetic energy to buffer the falling of the hydraulic support 01. By setting the first nut 221 and the second nut 222, the first spring 231 and the second spring 232 of different lengths can be adapted to improve the adaptability of the buffer assembly 20. At the same time, the first nut 221 and the second nut 222 can also limit the relative displacement of the rotating disk 21.

[0039] Specifically, fasteners, such as a block or other structure, may be provided on the turntable 21 , the first nut 221 and the second nut 222 to fix and connect the elastic member.

[0040] Furthermore, a first stopper 24 is provided on the buffer rod 22, and the first stopper 24 is fixedly arranged in the middle of the buffer rod 22, and the first nut 221 and the second nut 222 are respectively arranged on both sides of the first stopper 24. With the operation of the coal mining machine and the scraper conveyor, the first nut 221 and the second nut 222 may move relative to the buffer rod 22 under the action of vibration, resulting in thread failure. By providing the first stopper 24, the first nut 221 and the second nut 222 can be effectively prevented from sliding excessively, thereby reducing the maintenance frequency of the equipment and ensuring the stability of the buffer assembly 20 under long-term and high-intensity operation.

[0041] Similarly, second limit blocks 25 are provided at both ends of the buffer rod 22, and the two rotating disks 21 are located between the two second limit blocks 25. By providing the second limit blocks 25, the excessive movement of the rotating disk 21 can be limited to prevent the rotating disk 21 from falling off the buffer rod 22.

[0042] In another specific embodiment of the present application, a threaded structure is provided on the surface of the buffer rod 22, and a first nut 221 and a second nut 222 are sleeved on the buffer rod 22. The first nut 221 and the second nut 222 are spaced apart along the extension direction of the buffer rod 22, and the first nut 221 and the second nut 222 are both threadedly matched with the threaded structure. The elastic member includes two first springs 231 and two second springs 232. The two first springs 231 are respectively arranged on both sides of the first nut 221, that is, one of the first springs 231 is located between the turntable 21 and the first nut 221, and the other first spring 231 is located between the turntable 21 and the second limit block 25. The two second springs 232 are respectively arranged on both sides of the second nut 222, that is, one of the second springs 232 is located between the turntable 21 and the first nut 221, and the other second spring 232 is located between the turntable 21 and the second limit block 25. In this embodiment, by setting two of the first spring 231 and the second spring 232, the buffering effect of the elastic member on the movement of the turntable 21 can be further enhanced. When the hydraulic support 01 does not fall over, the first spring 231 and the second spring 232 can be in an initial state, a compressed state or a stretched state.

[0043] like Figure 1 and Figure 2 As shown, a connection seat 30 is provided between the turntable 21 and the connecting rod 10, and the connection seat 30 is fixedly arranged at the end of the connecting rod 10, and a rotation groove 31 is provided on the outer side wall of the connection seat 30 along the circumferential direction, and the turntable 21 is rotatably arranged in the rotation groove 31. Through the above-mentioned arrangement, the arrangement of the connection seat 30 and the rotation groove 31 enables the turntable 21 to rotate more flexibly, which is suitable for the scene where two adjacent hydraulic props 01 have different angles in coal mining, and improves the adaptability and working efficiency of the buffer assembly 20. The coordinated use of the connection seat 30 and the rotation groove 31 not only provides the degree of freedom required for the rotation of the turntable 21, but also ensures the stable connection between the connection seat 30 and the rotation groove 31, and the side wall of the rotation groove 31 limits the lateral deviation of the turntable 21. In coal mining, this design can adapt to the needs caused by the inclination of the coal seam or the angle adjustment of the equipment, improves the adaptability and flexibility of the hydraulic prop 01, reduces the equipment failure that may be caused by improper angle adjustment, and ensures the continuity and efficiency of the mining operation.

[0044] Specifically, a plurality of balls are arranged between the end faces of the rotating disk 21 which are arranged opposite to each other along the thickness and the side walls of the rotating groove 31. The arrangement of the balls reduces the friction between the rotating disk 21 and the rotating groove 31, making the rotating disk 21 rotate more smoothly, which is suitable for the working conditions in which the hydraulic props in coal mining need to adjust the angle frequently, and prolongs the service life of the connecting device. Especially in the high-load and high-frequency working environment of coal mining, this design can significantly reduce wear, prolong the service life of the connecting device, reduce maintenance costs, and improve the operating efficiency of the equipment.

[0045] In a specific embodiment of the present application, the width of the rotation groove 31 is greater than the thickness of the rotating disk 21, and the rotating disk 21 can move in the rotation groove 31 along the width direction of the rotation groove 31. Through the above arrangement, there is a certain clearance between the rotating disk 21 and the side wall of the rotation groove 31. When the hydraulic support 01 simultaneously tilts in the front-to-back direction, that is, tilts in the same direction as the rotation direction of the rotating disk 21 and tilts sideways, or when the hydraulic support 01 is slightly deflected due to settlement, the rotation groove 31 will not excessively abut the rotating disk 21 and drive the buffer rod 22 to rotate, thereby preventing the buffer rod 22 from being subjected to shear force and ensuring the structural strength of the buffer rod 22.

[0046] Specifically, the width of the rotating groove 31 can be 1.1 to 1.3 times the thickness of the turntable 21, such as 1.1 times, 1.2 times or 1.3 times, and can be selected according to the actual production environment of the coal mine.

[0047] like Figure 3 As shown, a plurality of through holes 02 are provided on the base of the hydraulic support 01, and the plurality of through holes 02 can be used to pass the connecting rods 10, that is, a plurality of buffer components 20 can be provided between every two adjacent hydraulic supports 01 to improve the buffering effect and the connection effect.

[0048] The hydraulic prop connection device of the present application effectively improves the stability of multiple hydraulic props 01 during the working process by setting a turntable 21 and a buffer rod 22, and the coordinated use of elastic parts, and prolongs the service life of the hydraulic props. At the same time, the device has a simple structure, is easy to install and maintain, significantly improves the safety production efficiency of the working surface, and provides more reliable technical support for heavy machinery operations such as coal mining. In addition, the elastic buffering characteristics of the connection device can also absorb part of the instantaneous impact caused by changes in geological conditions, reduce damage to the hydraulic prop connection device, and is suitable for coal mining under various geological conditions, as well as metal mines, tunnel excavation and other engineering operations that require the use of hydraulic props, further broadening its scope of application. By regularly checking and adjusting the elastic preload of the buffer assembly 20, it can be ensured that the connection device is always in the best working state, thereby improving the reliability of the entire hydraulic prop system, reducing maintenance costs, and prolonging the service life of the equipment. In practical applications, this connection device can also reduce production interruptions caused by equipment failures and improve operating efficiency. Especially in the dusty, humid and hot environment of coal mines, its simple design and easy maintenance enable the equipment to maintain good working performance even under harsh conditions, reducing the additional costs caused by equipment maintenance and providing technical guarantee for the sustainable development of the coal mining industry.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic prop connection device, characterized in that: The hydraulic support connecting device is arranged between two adjacent hydraulic supports (01), and the hydraulic support connecting device comprises: A connecting rod (10) is fixedly arranged on a base of each hydraulic support (01), and the connecting rod (10) extends along a direction in which the plurality of hydraulic supports (01) are arranged at intervals; A buffer assembly (20), the buffer assembly (20) comprising a rotating disk (21) and a buffer rod (22), the rotating disks (21) are respectively arranged at the mutually close ends of two adjacent connecting rods (10), the rotating disks (21) can rotate relative to the connecting rods (10), the buffer rod (22) extends along the direction in which the plurality of hydraulic struts (01) are arranged at intervals, the buffer rod (22) is inserted between the two adjacent rotating disks (21), the two rotating disks (21) can be slidably arranged on the buffer rod (22), an elastic member is sleeved on the buffer rod (22), and the elastic member is located between the two adjacent rotating disks (21) to provide the rotating disks (21) with an elastic force to drive the two rotating disks (21) to move in a direction away from each other or in a direction close to each other.

2. The hydraulic support connection device according to claim 1, characterized in that: A plurality of the buffer rods (22) are provided, and a plurality of through holes are provided on the turntable (21). The plurality of through holes are arranged at intervals along the circumferential direction on the end surface of the turntable (21). The plurality of buffer rods (22) are arranged in one-to-one correspondence with the plurality of through holes, and the through holes are used to penetrate the buffer rods (22).

3. The hydraulic support connection device according to claim 2, characterized in that: The inner diameter of the through hole is greater than the diameter of the buffer rod (22).

4. The hydraulic support connection device according to claim 2, characterized in that: The plurality of perforations are symmetrical around the axis of the rotating disk (21).

5. The hydraulic support connection device according to claim 1, characterized in that: The surface of the buffer rod (22) is provided with a threaded structure, and the buffer rod (22) is sleeved with a first nut (221) and a second nut (222), the first nut (221) and the second nut (222) are spaced apart along the extension direction of the buffer rod (22), the first nut (221) and the second nut (222) are both threadedly matched with the threaded structure, the elastic member comprises a first spring (231) and a second spring (232), the first spring (231) is located between the first nut (221) and the rotating disk (21) on the side of the first nut (221) away from the second nut (222), and the second spring (232) is located between the second nut (222) and the rotating disk (21) on the side of the second nut (222) away from the first nut (221).

6. The hydraulic support connection device according to claim 5, characterized in that: The buffer rod (22) is provided with a first limit block (24), the first limit block (24) is fixedly arranged in the middle of the buffer rod (22), and the first nut (221) and the second nut (222) are respectively arranged on both sides of the first limit block (24).

7. The hydraulic support connection device according to claim 5, characterized in that: Second limit blocks (25) are provided at both ends of the buffer rod (22), and the two rotating disks (21) are located between the two second limit blocks (25).

8. The hydraulic support connection device according to claim 1, characterized in that: A connecting seat (30) is provided between the rotating disk (21) and the connecting rod (10); the connecting seat (30) is fixedly arranged at the end of the connecting rod (10); a rotating groove (31) is circumferentially arranged on the outer side wall of the connecting seat (30); and the rotating disk (21) is rotatably arranged in the rotating groove (31).

9. The hydraulic support connection device according to claim 8, characterized in that: A plurality of balls are arranged between the end surfaces of the rotating disk (21) which are arranged opposite to each other along the thickness and the side walls of the rotating groove (31).

10. The hydraulic support connection device according to claim 8, characterized in that: The width of the rotating groove (31) is greater than the thickness of the rotating disk (21), and the rotating disk (21) can move in the rotating groove (31) along the width direction of the rotating groove (31).

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