Lateral thrust device and hydraulic support

Abstract

The invention provides a side pushing device and a hydraulic support. The lateral thruster comprises a cylinder bottom, a first oil port and a second oil port, wherein the cylinder bottom is provided with the first oil port and the second oil port; the at least two telescopic mechanisms are respectively arranged on two opposite sides of the cylinder bottom; wherein the telescopic mechanism comprises a cylinder barrel connected with a cylinder bottom; the piston rod is arranged in the cylinder barrel and can stretch out and draw back in the length direction of the cylinder barrel; the piston is connected with the piston rod and divides the internal space of the cylinder barrel into a rod cavity and a rodless cavity which are mutually independent; the first oil way channel is communicated with the first oil port and the rodless cavity; and the second oil way channel is communicated with the second oil port and the rod cavity. According to the side pushing device, the rubber pipe does not need to be disassembled and assembled again when the side protection plates on the left side and the right side are switched to stretch and retract, operation is convenient when the side protection plates on the left side and the right side are switched to stretch and retract, dust, coal ash and the like are prevented from entering a hydraulic system, system reliability can be improved, and efficiency and safety are higher.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic supports, and in particular to a side thrust device and a hydraulic support. Background Art

[0002] Hydraulic support is an important supporting equipment for comprehensive mining working face, which is used to protect the safety of workers and comprehensive mining equipment. Usually, side push jacks and side guard plate structures are installed on the top beam and cover beam to protect the gap between adjacent supports.

[0003] In order to improve the adaptability of hydraulic supports, mines now generally require the design of double-sided side guards so that the side guards on the left and right sides can be switched to extend or retract according to the conditions of the working surface.

[0004] However, in actual application, when switching the extension and retraction of the side guard plates on the left and right sides, the side push jacks need to be disassembled and reassembled, which is labor-intensive, more difficult to operate underground, and less safe. At the same time, the pipelines need to be reconnected, and the working environment of the hydraulic support is generally dusty and ash-rich. Each disassembly and assembly may cause system contamination and may cause failure of the column jack and the hydraulic valve. Summary of the invention

[0005] The present application aims to solve one of the technical problems existing in the related art.

[0006] To this end, a first aspect of the present application is to provide a side thrust device.

[0007] A second aspect of the present application is to provide a hydraulic support.

[0008] In view of this, according to the first aspect of the present application, a side thrust device is proposed, comprising: a cylinder bottom, on which a first oil port and a second oil port are provided; at least two telescopic mechanisms, respectively arranged on opposite sides of the cylinder bottom; wherein the telescopic mechanism comprises: a cylinder barrel, connected to the cylinder bottom; a piston rod, arranged in the cylinder barrel and capable of telescoping along the length direction of the cylinder barrel; a piston, connected to the piston rod, and dividing the internal space of the cylinder barrel into mutually independent rod chambers and rodless chambers; a first oil passage, connecting the first oil port and the rodless chamber; a second oil passage, connecting the second oil port and the rod chamber.

[0009] Compared with the existing single-piston hydraulic telescopic device, in actual use, the side thrust device proposed in the above embodiment drives the side guard plates on both sides to perform telescopic movements respectively through the piston rods of the two telescopic mechanisms. The movements of the two telescopic mechanisms can be flexibly adjusted by separately controlling the actions of the two telescopic mechanisms to meet specific work requirements. Therefore, there is no need to disassemble and reassemble the hose when switching the telescopic movement of the left and right side guard plates. The operation is convenient when switching the telescopic movement of the left and right side guard plates, thereby preventing dust, coal ash, etc. from entering the hydraulic system, which helps to improve the reliability of the system and make it more efficient and safe. At the same time, the two telescopic mechanisms share the first oil port and the second oil port. This design not only reduces the number of pipelines, thereby simplifying the pipeline layout, but also helps to improve space utilization, making the entire system more compact. At the same time, this design makes the entire installation process simpler and faster.

[0010] In some technical solutions, optionally, the telescopic mechanism also includes a liquid passing tube; wherein a cylinder cavity is formed inside the piston rod, and the cylinder cavity is formed by an inward depression of one end of the piston rod adjacent to the cylinder bottom, and the cylinder cavity and the rod cavity are connected; the liquid passing tube is arranged in the cylinder cavity and is connected with the second oil channel, and the liquid passing tube and the piston rod are slidably matched.

[0011] In the above technical solution, the second oil passage and the rod chamber are connected through the liquid pipe, the cylinder chamber and the liquid hole, so as to construct a liquid inlet and liquid return circuit. When the piston rod needs to be retracted, the hydraulic oil can enter the rod chamber through the liquid hole, thereby pushing the piston rod to move toward the bottom of the cylinder to achieve the retraction action; when the piston rod needs to be extended, the hydraulic oil enters the rodless chamber through the first oil passage, thereby pushing the piston rod to move away from the bottom of the cylinder to achieve the extension action. At this time, the hydraulic oil in the rod chamber enters the cylinder chamber through the liquid hole.

[0012] In some technical solutions, optionally, the thrust device further includes a first sealing mechanism, which is disposed between the piston rod and the piston, thereby ensuring that the rodless chamber and the rod chamber are independent of each other.

[0013] In some technical solutions, the telescopic mechanism may further include a guide sleeve, which is arranged at one end of the cylinder away from the cylinder bottom, and the guide sleeve and the piston rod are slidably matched. By providing the guide sleeve, the piston rod can be prevented from deflecting during the telescopic movement, and the guide sleeve can also provide the necessary support force for the piston rod, thereby preventing the piston rod from deforming.

[0014] In some technical solutions, the thrust device may further include a second sealing mechanism, which is disposed between the guide sleeve and the piston rod to form a seal between the guide sleeve and the piston rod; the second sealing mechanism and the piston rod are slidably matched. In this way, leakage can be avoided, thereby helping to improve the reliability of the thrust device.

[0015] In some technical solutions, optionally, a groove is provided on the inner wall surface of the guide sleeve, a guide ring is sleeved in the groove, and the guide ring and the piston rod are slidably matched.

[0016] In the above technical solution, by providing a guide ring, the piston rod and the guide sleeve can be prevented from directly contacting and rubbing against each other, thereby helping to reduce the risk of wear and leakage.

[0017] According to the second aspect of the present application, the present application also proposes a hydraulic support, comprising a beam body, a side guard plate and a side thrust device proposed in any of the above technical solutions; wherein the cylinder bottom and the beam body are connected to the piston rod and the side guard plate. Therefore, the hydraulic support has all the beneficial effects of any of the above technical solutions, which will not be repeated here.

[0018] In some technical solutions, optionally, a first connecting hole is provided on the cylinder bottom and the beam body; wherein the hydraulic support further comprises a first connecting member, and the first connecting member is detachably installed in the first connecting hole.

[0019] In the above technical solution, the first connecting member is inserted into the first connecting hole to realize the connection between the cylinder bottom and the beam body, thereby fixing the side thrust device on the beam body; at the same time, since the first connecting member is detachable, it can be easily removed from the first connecting hole when needed, thereby realizing the rapid separation of the cylinder bottom and the beam body. This detachability greatly improves the adaptability and flexibility of the hydraulic support, enabling it to better adapt to different working conditions and requirements.

[0020] In some technical solutions, optionally, a second connecting hole is provided on the piston rod and the beam body; wherein the hydraulic support further comprises a second connecting member, and the second connecting member is detachably installed in the second connecting hole.

[0021] In the above technical solution, the second connecting member is inserted into the second connecting hole, so that the piston rod and the beam body are connected to lock the piston rod. In this way, one of the piston rods can be made inoperative, while the other piston rod can be telescopically moved under the action of hydraulic oil to drive the side guard plate to be extended or retracted relative to the beam body, so as to adjust the position of the side guard plate, thereby meeting the need of the side thrust device to adjust the side guard plate on one side.

[0022] In some technical solutions, optionally, a third connecting hole is provided on the side guard plate and the piston rod; wherein the hydraulic support further comprises a third connecting member, and the third connecting member is detachably installed in the third connecting hole.

[0023] In the above embodiment, the third connecting member is inserted into the third connecting hole to connect the side guard plate and the piston rod together. In this way, when the side guard plate needs to be adjusted, the third connecting member only needs to be taken out of the third connecting hole to complete the disassembly of the side guard plate.

[0024] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 A schematic structural diagram of a side thrust device in an embodiment of the present application is shown;

[0027] Figure 2 A schematic structural diagram of a hydraulic support in an embodiment of the present application is shown.

[0028] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows:

[0029] 10-side thrust device; 100-cylinder bottom; 110-first oil port; 120-second oil port; 200-telescopic mechanism; 210-cylinder barrel; 211-rodless chamber; 212-rod chamber; 220-piston rod; 221-cylinder chamber; 222-fluid hole; 230-piston; 240-first oil passage; 250-second oil passage; 260-fluid pipe; 270-guide sleeve; 271-groove; 272-guide ring; 300-first sealing mechanism; 400-second sealing mechanism;

[0030] 30-hydraulic support; 31-beam body; 32-side guard plate; 33-first connecting hole; 34-first connecting piece; 35-second connecting hole; 36-second connecting piece; 37-third connecting hole; 38-third connecting piece. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0033] Combine the following Figure 1 and Figure 2 , the side thrust device and the hydraulic support provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0034] Reference Figure 1 In some embodiments of the present application, a side thrust device 10 is proposed, including a cylinder bottom 100 and at least two telescopic mechanisms 200.

[0035] Specifically, a first oil port 110 and a second oil port 120 are provided on the cylinder bottom 100 .

[0036] The telescopic mechanism 200 includes a cylinder 210, a piston rod 220, a piston 230, a first oil passage 240 and a second oil passage 250. The cylinder 210 is connected to the cylinder bottom 100; the piston rod 220 is disposed in the cylinder 210 and can be moved along the length direction of the cylinder 210 ( Figure 2 The piston 230 is connected to the piston rod 220, and the internal space of the cylinder 210 is divided into a rodless chamber 211 and a rod chamber 212 which are independent of each other; the first oil passage 240 is connected to the first oil port 110 and the rodless chamber 211, so that the piston rod 220 is extended; the second oil passage 250 is connected to the second oil port 120 and the rod chamber 212, so that the piston rod 220 is retracted.

[0037] Compared with the existing single-piston hydraulic telescopic device, in actual use, the side thrust device 10 proposed in the above embodiment drives the side guard plates on both sides to perform telescopic movement respectively through the piston rods 220 of the two telescopic mechanisms 200. The movement state of the side guard plates on both sides can be flexibly adjusted by controlling the actions of the two telescopic mechanisms 200 respectively to meet specific work requirements; therefore, there is no need to disassemble and reassemble the hose when switching the telescopic of the left and right side guard plates, and the operation is convenient when switching the telescopic of the left and right side guard plates, thereby avoiding dust, coal ash, etc. from entering the hydraulic system, which helps to improve the reliability of the system and make it more efficient and safe; at the same time, the two telescopic mechanisms 200 share the first oil port 110 and the second oil port 120. This design not only reduces the number of pipelines, thereby simplifying the pipeline layout, but also helps to improve space utilization, making the entire system more compact. At the same time, this design makes the entire installation process simpler and faster.

[0038] In some embodiments, the telescopic mechanism 200 further includes a liquid passage 260. One end of the piston rod 220 adjacent to the cylinder bottom 100 is recessed inward to form a cylinder cavity 221, and the cylinder cavity 221 is connected to the rod cavity 212 through a liquid hole 222. The liquid passage 260 is disposed in the cylinder cavity 221 and is connected to the second oil passage 250, and the liquid passage 260 and the piston rod 220 are slidably matched.

[0039] In the above embodiment, the second oil passage 250 and the rod chamber 212 are connected through the liquid pipe 260, the cylinder chamber 221 and the liquid hole 222, so as to construct a liquid inlet and liquid return circuit. When the piston rod 220 needs to be retracted, the hydraulic oil can enter the rod chamber 212 through the liquid hole 222, thereby pushing the piston rod 220 to move toward the cylinder bottom 100 to achieve the retraction action; when the piston rod 220 needs to be extended, the hydraulic oil enters the rodless chamber 211 through the first oil passage 240, thereby pushing the piston rod 220 to move away from the cylinder bottom 100 to achieve the extension action. At this time, the hydraulic oil in the rod chamber 212 enters the cylinder chamber 221 through the liquid hole 222.

[0040] In practical applications, the barrel cavity 221 and the piston rod 220 are coaxially arranged, so that wear and tear due to deviation can be avoided, thereby helping to improve the service life of the entire device.

[0041] In some embodiments, to prevent internal leakage, a first sealing mechanism 300 is provided between the piston 230 and the piston rod 220 to form a seal between the piston 230 and the piston rod 220, thereby ensuring that the rodless chamber 211 and the rod chamber 212 are independent of each other.

[0042] Exemplarily, the first sealing mechanism 300 uses a sealing ring (such as an O-ring). It is understandable that the present embodiment is not limited thereto, and in practical applications, a suitable sealing structure can be selected according to actual needs.

[0043] In some embodiments, the telescopic mechanism 200 further includes a guide sleeve 270. The guide sleeve 270 is disposed at one end of the cylinder barrel 210 away from the cylinder bottom 100, and the guide sleeve 270 and the piston rod 220 are slidably matched. By providing the guide sleeve 270, the piston rod 220 can be prevented from deflecting during the telescopic movement. At the same time, the guide sleeve 270 can also provide the necessary supporting force for the piston rod 220, thereby preventing the piston rod 220 from deforming.

[0044] In the above embodiment, a second sealing mechanism 400 is provided between the guide sleeve 270 and the piston rod 220 to form a seal between the guide sleeve 270 and the piston rod 220. The second sealing mechanism 400 and the piston rod 220 are slidably matched. In this way, leakage can be avoided, thereby helping to improve the reliability of the thrust device.

[0045] In some embodiments, the second sealing mechanism 400 includes a dust ring and a sealing ring. This combined structure can not only effectively prevent external impurities from entering the cylinder barrel 210, but also ensure that the hydraulic oil in the cylinder barrel 210 will not leak to the outside.

[0046] In practical applications, the guide sleeve 270 is screwed to the cylinder barrel 210. In this way, when maintenance or replacement is required, the screwing mode makes the disassembly process simple and fast, and after disassembly, the internal situation can be observed intuitively.

[0047] In some embodiments, a groove 271 is provided on the inner wall surface of the guide sleeve 270, and a guide ring 272 is provided in the groove 271, and the guide ring 272 and the piston rod 220 are slidably matched. By providing the guide ring 272, the piston rod 220 and the guide sleeve 270 can be prevented from directly contacting and rubbing, thereby helping to reduce the risk of wear and leakage.

[0048] Illustratively, the guide ring 272 is made of a wear-resistant and corrosion-resistant material.

[0049] Reference Figure 1 and Figure 2 In some embodiments, the present application further proposes a hydraulic support 30, comprising a beam body 31, a side guard plate 32 and a side thrust device 10 proposed in any of the above embodiments. The cylinder bottom 100 is connected to the beam body 31, and the piston rod 220 is connected to the side guard plate 32. Therefore, the hydraulic support 30 has all the beneficial effects of any of the above embodiments, which will not be repeated here.

[0050] In some embodiments, a first connection hole 33 is provided on the cylinder bottom 100 and the beam body 31. The hydraulic support 30 further includes a first connection member 34, which is detachably installed in the first connection hole 33.

[0051] In the above embodiment, the first connecting member 34 is inserted into the first connecting hole 33, thereby realizing the connection between the cylinder bottom 100 and the beam body 31, thereby fixing the side thrust device 10 on the beam body 31; at the same time, since the first connecting member 34 is detachable, it can be easily removed from the first connecting hole 33 when needed, thereby realizing the rapid separation of the cylinder bottom 100 and the beam body 31. This detachability greatly improves the adaptability and flexibility of the hydraulic support 30, enabling it to better adapt to different working conditions and requirements.

[0052] In some embodiments, a second connection hole 35 is provided on the piston rod 220 and the beam body 31. The hydraulic support 30 further includes a second connection member 36, which is detachably installed in the second connection hole 35.

[0053] In the above embodiment, the second connecting member 36 is inserted into the second connecting hole 35, so that the piston rod 220 and the beam body 31 are connected to lock the piston rod 220. In this way, one of the piston rods 220 can be made inoperative, while the other piston rod 220 can be telescopically moved under the action of hydraulic oil to drive the side guard plate 32 to be extended or retracted relative to the beam body 31, so as to adjust the position of the side guard plate 32, thereby meeting the need of the side thrust device to adjust the side guard plate 32 on one side, and the structure is simple and easy to assemble.

[0054] In some embodiments, a third connecting hole 37 is provided on the side guard plate 32 and the piston rod 220 . The hydraulic support 30 further includes a third connecting member 38 , which is detachably mounted in the third connecting hole 37 .

[0055] In the above embodiment, the third connecting member 38 is inserted into the third connecting hole 37 to connect the side guard plate 32 and the piston rod 220. In this way, when the side guard plate 32 needs to be adjusted, the third connecting member 38 only needs to be taken out of the third connecting hole 37 to complete the disassembly of the side guard plate 32, which has a simple structure and is easy to assemble.

[0056] In some embodiments, the first connecting member 34, the second connecting member 36 and the third connecting member 38 are pins. It is understandable that in practical applications, the first connecting member 34, the second connecting member 36 and the third connecting member 38 can also be other structural members that meet the requirements, such as screws, etc., and this embodiment is not limited thereto.

[0057] It should be clarified that in the claims, specification and drawings of the present application, the term "multiple" refers to two or more than two. Unless otherwise clearly defined, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the drawings, which is only for the purpose of more conveniently describing the present application and making the description process easier, rather than indicating or implying that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation, so these descriptions cannot be understood as limitations on the present application; the terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0058] In the claims, specification and drawings of the present application, the description of the terms "one embodiment", "some embodiments", "specific embodiments" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the claims, specification and drawings of the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A thrust device, characterized in that: include: A cylinder bottom, wherein a first oil port and a second oil port are provided on the cylinder bottom; At least two telescopic mechanisms are respectively arranged on two opposite sides of the cylinder bottom; Wherein, the telescopic mechanism comprises: A cylinder barrel connected to the cylinder bottom; A piston rod is disposed in the cylinder and can be extended and retracted along the length direction of the cylinder; A piston connected to the piston rod and dividing the internal space of the cylinder into a rodless chamber and a rod chamber that are independent of each other; A first oil passage, communicating the first oil port and the rodless chamber; The second oil passage is connected with the second oil port and the rod chamber.

2. The thrust device according to claim 1, characterized in that: The telescopic mechanism also includes a liquid passage pipe; Wherein, a barrel cavity is formed inside the piston rod, and the barrel cavity is formed by an inward depression of one end of the piston rod adjacent to the cylinder bottom, and the barrel cavity is connected with the rod cavity; The liquid passage is passed through the cylinder cavity and communicated with the second oil passage. The liquid passage is slidably matched with the piston rod.

3. The thrust device according to claim 2, characterized in that: The invention also comprises a first sealing mechanism, wherein the first sealing mechanism is arranged between the piston rod and the piston.

4. The thrust device according to claim 1, characterized in that: The telescopic mechanism further comprises a guide sleeve; the guide sleeve is arranged at one end of the cylinder barrel away from the cylinder bottom, and the guide sleeve and the piston rod are slidably matched.

5. The thrust device according to claim 4, characterized in that: It also includes a second sealing mechanism, which is arranged between the guide sleeve and the piston rod.

6. The thrust device according to claim 5, characterized in that: A groove is arranged on the inner wall surface of the guide sleeve, a guide ring is sleeved in the groove, and the guide ring and the piston rod are slidably matched.

7. A hydraulic support, characterized in that: A side thruster comprising a beam body, a side guard plate and a side thruster as claimed in any one of claims 1 to 6; Wherein, the cylinder bottom is connected to the beam body; The piston rod is connected to the side guard plate.

8. The hydraulic support according to claim 7, characterized in that: The cylinder bottom and the beam body are provided with a first connecting hole; Wherein, the hydraulic support further includes a first connecting member, and the first connecting member is detachably installed in the first connecting hole.

9. The hydraulic support according to claim 7, characterized in that: The piston rod and the beam body are provided with a second connecting hole; Wherein, the hydraulic support further includes a second connecting member, and the second connecting member is detachably installed in the second connecting hole.

10. The hydraulic support according to any one of claims 7 to 9, characterized in that: The side guard plate and the piston rod are provided with a third connecting hole; Wherein, the hydraulic support further includes a third connecting member, and the third connecting member is detachably installed in the third connecting hole.

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