Horizontal pulling type hydraulic support tilting prevention device
By adding a sliding plate at the bottom of the hydraulic bracket and using an anti-reverse jack to make it abut the pressure relief problem caused by the anti-reverse jack to withstand large loads for a long time, the hydraulic bracket is solved, and the stability and safety of the hydraulic bracket are improved.
Patent Information
- Application Number
- CN202420261764.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-02
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-02-02
AI Technical Summary
Hydraulic support is prone to pressure relief due to the long-term large load prevention jack in inclined coal seams, resulting in inverted frames and squeezing frames.
Add a sliding plate to the bottom of the hydraulic support main body, and use an anti-reverse jack to slide and abut the working surface, reducing the load on the anti-reverse jack, and automatically adjusting through telescopic parts and elastic parts.
It reduces the service life of the anti-reversing jack, improves the stability of the hydraulic support, reduces the frequency of inverting and squeezing accidents, and improves the safety factor.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydraulic supports, and in particular to a horizontal pull type hydraulic support anti-falling device. Background Art
[0002] The stability of the hydraulic support in the fully mechanized mining face plays a vital role in the high-yield, high-efficiency, safe and reliable coal mining. When there is an inclination in the coal seam of the working face, the hydraulic support will slide down along the inclined surface during the movement, and the greater the inclination, the more serious the slide. The inclination, tilting, sliding and offset of the support will cause great trouble to the roof management. The hydraulic support design specification stipulates that when the inclination of the coal seam is greater than 15 degrees, the hydraulic support must be equipped with an anti-falling device, and the working face support should be equipped with an anti-skid device. When the inclination of the coal seam is greater than 25 degrees, a conveyor anti-skid device must be installed. Therefore, when working in an inclined coal seam, the hydraulic support must be equipped with an anti-falling and anti-skid device.
[0003] The function of the support anti-fall device is to prevent the support from falling over. If the support falls over, it can straighten the support. This device generally adopts a flat pull type. The connectors at both ends of the anti-fall jack and the anti-fall shaft connect the adjacent supports. The support anti-fall device is installed between two hydraulic supports. When the hydraulic support has a large change in the inclination angle of the working surface, the adjustment slope of the working surface support is less than the change slope of the coal seam or the local slope of the working surface is large, the hydraulic support may fall over or squeeze. The hydraulic support can be leveled by using the anti-fall jack between the two hydraulic supports. However, after the hydraulic support is leveled, the bottom of the hydraulic support may not be completely in contact with the working surface due to the change in slope. Once the anti-fall jack is depressurized, it is easy to cause a fall or squeeze accident. Utility Model Content
[0004] The utility model provides a horizontal pull type hydraulic support anti-falling device, which solves the problem in the related art that the anti-falling jack bears a large load for a long time.
[0005] The technical solution of the utility model is as follows:
[0006] A horizontal pull type hydraulic support anti-falling device, used for being arranged on a hydraulic support body, comprising:
[0007] An anti-falling jack is arranged between the two hydraulic support bodies;
[0008] A base is arranged at the bottom of the hydraulic support body, and the base includes:
[0009] A support frame, wherein the support frame has a plurality of mounting holes;
[0010] There are several sliding plates, one of which is slidably arranged in the mounting hole. After the anti-falling jack pulls the hydraulic support body, the sliding plate slides and abuts against the working surface.
[0011] Optionally, it also includes:
[0012] There are several telescopic parts, one of which is arranged in a mounting hole, the sliding plate is arranged on the telescopic part, and the telescopic part drives the sliding plate to slide.
[0013] Optionally, the sliding plate has a sliding groove on the top, and further comprises:
[0014] A sliding column, slidably disposed in the sliding groove, and the sliding plate is disposed on the telescopic member through the sliding column;
[0015] A baffle plate is arranged on the top of the sliding plate, the baffle plate is located at the opening of the sliding groove, and the sliding plate abuts against the baffle plate after sliding;
[0016] The pressure sensor is arranged at the bottom of the sliding groove, and the sliding column presses the pressure sensor after sliding.
[0017] Optionally, it also includes:
[0018] An elastic member, two ends of which are respectively arranged on the telescopic member and the sliding plate, and the elastic member provides a force for the sliding plate to move away from the telescopic member.
[0019] Optionally, it also includes:
[0020] The sleeve is arranged on the top beam of the hydraulic support body, and the two ends of the anti-falling jack are respectively arranged on the sleeves on two adjacent hydraulic support bodies.
[0021] Optionally, it also includes:
[0022] A connecting head is slidably arranged on the sleeve, and the anti-falling jack is hinged to the connecting head.
[0023] Optionally, it also includes:
[0024] A retaining ring is detachably arranged on the sleeve, and the retaining ring is used to prevent the anti-falling jack from falling off the sleeve.
[0025] The working principle and beneficial effects of the utility model are:
[0026] In the utility model, a sliding plate is added to the bottom of the hydraulic support body. When the working surface angle of the hydraulic support body changes or the working surface is uneven, the anti-falling jack can be used to make the adjacent hydraulic support body in a horizontal state. However, the bottom surface of the hydraulic support body may not be in contact with the working surface, and the anti-falling jack will always be in a working state with a large load. Therefore, when the anti-falling jack acts, the sliding plate at the bottom of the hydraulic support body will slide out of the mounting hole until it abuts against the working surface, so that the force of the hydraulic support body is partially exerted on the working surface through the sliding plate, reducing the load on the anti-falling jack and increasing the service life of the anti-falling jack. Moreover, the anti-falling jack is always in action and is prone to pressure relief, causing frame collapse and frame squeeze accidents, resulting in significant economic losses. After adding the sliding plate, it is equivalent to that the bottom surface of the hydraulic support body is always in contact with the working surface. Even if the anti-falling jack is depressurized, most of the pressure of the hydraulic support body will fall on the working surface, and the probability of the hydraulic support body collapsing and frame squeeze will be greatly reduced, thereby reducing economic losses and improving the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.
[0028] Figure 1 It is a schematic diagram of the structure of the utility model;
[0029] Figure 2 It is a cross-sectional view of the utility model;
[0030] Figure 3 This is an enlarged view of point B of the utility model;
[0031] Figure 4 This is a front view of the utility model;
[0032] Figure 5 This is an enlarged view of point A of the present utility model.
[0033] In the figure: 100, hydraulic support body, 200, anti-falling jack, 300, base, 310, support frame, 311, mounting hole, 320, sliding plate, 400, telescopic member, 321, sliding groove, 500, sliding column, 600, baffle, 700, pressure sensor, 800, elastic member, 900, sleeve, 1000, connector, 1100, retaining ring. DETAILED DESCRIPTION
[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.
[0035] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".
[0036] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0037] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0038] Reference Figure 1~Figure 5 A horizontal pull type hydraulic support anti-falling device is proposed, which is used to be arranged on the hydraulic support body 100, including an anti-falling jack 200 arranged between the two hydraulic support bodies 100; a base 300 is arranged at the bottom of the hydraulic support body 100, and the base 300 includes a support frame 310, and the support frame 310 has a plurality of mounting holes 311; there are a plurality of sliding plates 320, and one sliding plate 320 is slidably arranged in the mounting hole 311. After the anti-falling jack 200 pulls the hydraulic support body 100, the sliding plate 320 slides and abuts against the working surface.
[0039] In this embodiment, a sliding plate 320 is added to the bottom of the hydraulic support body 100. When the working surface angle of the hydraulic support body 100 changes or the working surface is uneven, the anti-falling jack 200 can be used to keep the adjacent hydraulic support bodies 100 in a horizontal state. However, the bottom surface of the hydraulic support body 100 may not abut against the working surface, and the anti-falling jack 200 will always be in a high-load working state. Therefore, when the anti-falling jack 200 is in action, the sliding plate 320 at the bottom of the hydraulic support body 100 will slide out of the mounting hole 311 until it abuts against the working surface, so that part of the force of the hydraulic support body 100 acts on the working surface through the sliding plate 320, thereby reducing the load on the anti-falling jack 200 and increasing the service life of the anti-falling jack 200. Moreover, if the anti-falling jack 200 is in operation all the time, it is easy to release pressure, causing accidents of falling or squeezing the frame, resulting in significant economic losses. After adding the sliding plate 320, it is equivalent to that the bottom surface of the hydraulic support body 100 is always in contact with the working surface. Even if the anti-falling jack 200 releases pressure, most of the pressure of the hydraulic support body 100 will fall on the working surface. The probability of the hydraulic support body 100 falling or squeezing the frame will be greatly reduced, thereby reducing economic losses and improving the safety factor.
[0040] Furthermore, there are a plurality of telescopic members 400 , one telescopic member 400 is disposed in one mounting hole 311 , the sliding plate 320 is disposed on the telescopic member 400 , and the telescopic member 400 drives the sliding plate 320 to slide.
[0041] In this embodiment, the telescopic member 400 is used to control the sliding of the sliding plate 320. When the anti-falling jack 200 is in action, the telescopic member 400 begins to extend, pushing the sliding plate 320 out of the mounting hole 311, so that the sliding plate 320 abuts against the working surface. The telescopic member 400 can take several forms such as a hydraulic jack, a rack jack or a screw jack. The telescopic member 400 is not only simple to operate and implement, but also can withstand greater pressure, thereby providing sufficient support for the hydraulic support body 100.
[0042] Furthermore, the sliding plate 320 has a sliding groove 321 at the top, and also includes a sliding column 500 slidably arranged in the sliding groove 321, and the sliding plate 320 is arranged on the telescopic member 400 through the sliding column 500; a baffle 600 is arranged on the top of the sliding plate 320, and the baffle 600 is located at the opening of the sliding groove 321, and the sliding plate 320 abuts against the baffle 600 after sliding; a pressure sensor 700 is arranged at the bottom of the sliding groove 321, and the sliding column 500 squeezes the pressure sensor 700 after sliding.
[0043] In this embodiment, the sliding column 500 is located between the telescopic member 400 and the sliding plate 320, and the sliding column 500 can enter the sliding groove 321. When the telescopic member 400 is extended, the sliding plate 320 moves toward the working surface. When the sliding plate 320 abuts against the working surface, the telescopic member 400 extends again and the sliding column 500 will enter the sliding groove 321 and trigger the pressure sensor 700 at the bottom of the sliding groove 321. The pressure sensor 700 transmits the signal that the sliding column 500 touches the bottom of the sliding groove 321 to the telescopic member 400, and the telescopic member 400 stops extending. Using the sliding column 500 to trigger the pressure sensor 700 can make the telescopic member 400 automatically sense the stop position, and there is no need to manually adjust the stop time of the telescopic member 400, so that it can be automatically adjusted to adapt to work surfaces in different situations. After the sliding column 500 enters the sliding groove 321 and touches the pressure sensor 700, the baffle 600 abuts against the top of the sliding plate 320, and the pressure of the hydraulic support body 100 is borne between the sliding plate 320 and the baffle 600 to prevent the pressure sensor 700 from being crushed.
[0044] Furthermore, two ends of an elastic member 800 are respectively arranged on the telescopic member 400 and the sliding plate 320 , and the elastic member 800 provides a force for the sliding plate 320 to move away from the telescopic member 400 .
[0045] In this embodiment, the elastic member 800 is arranged between the telescopic member 400 and the sliding plate 320. When the sliding plate 320 abuts against the working surface, the sliding column 500 begins to slide into the sliding groove 321, and the elastic member 800 is compressed. After the telescopic member 400 contracts, under the action of the elastic member 800, the sliding plate 320 and the sliding column 500 will return to their initial state. Due to the large amount of dust in the mine, after the sliding column 500 slides into the sliding groove 321, the sliding column 500 may always abut against the bottom of the sliding groove 321 due to dust accumulation. After the telescopic member 400 contracts, the sliding column 500 will not leave the bottom of the sliding groove 321, and the elastic force of the elastic member 800 can reset it for the next use.
[0046] Furthermore, it also includes a sleeve 900 disposed on the top beam of the hydraulic support body 100 , and two ends of the anti-falling jack 200 are respectively disposed on the sleeves 900 on two adjacent hydraulic support bodies 100 .
[0047] In this embodiment, the anti-falling jack 200 is set on the two hydraulic support bodies 100 through the sleeve 900. The anti-falling jack 200 acts on the two hydraulic support bodies 100. When the hydraulic support body 100 falls over, since the sleeve 900 is at a certain distance from the top beam of the hydraulic support body 100, the anti-falling jack 200 pulls the two sleeves 900 to make the two hydraulic support bodies 100 reach a relatively horizontal state.
[0048] Furthermore, it also includes a connecting head 1000 slidably arranged on the sleeve 900, and the anti-falling jack 200 is hinged to the connecting head 1000.
[0049] In this embodiment, the anti-falling jack 200 is slidably set on the sleeve 900 through the connecting head 1000. When the hydraulic support body 100 is raised or lowered, the connecting head 1000 can be raised or lowered on the sleeve 900. Even if the lifting and lowering actions between the two hydraulic support bodies 100 are inconsistent, the anti-falling jack 200 can adapt to their height changes.
[0050] Furthermore, a retaining ring 1100 is detachably provided on the sleeve 900 , and the retaining ring 1100 is used to prevent the anti-falling jack 200 from falling off from the sleeve 900 .
[0051] In this embodiment, the retaining ring 1100 is arranged on the sleeve 900, which can prevent the connector 1000 from slipping off the sleeve 900, and the retaining ring 1100 is detachable, which is more convenient for the installation and removal of the connector 1000. The retaining ring 1100 and the sleeve 900, the connector 1000 and the sleeve 900, and the connector 1000 and the anti-falling jack 200 are all connected by pins, and the connection method is simple and easy to disassemble.
[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A horizontal pull type hydraulic support anti-falling device, used for being arranged on a hydraulic support body (100), characterized in that: include; An anti-falling jack (200) is arranged between the two hydraulic support bodies (100); A base (300) is arranged at the bottom of the hydraulic support body (100), and the base (300) comprises: A support frame (310), wherein the support frame (310) has a plurality of mounting holes (311); There are a plurality of sliding plates (320), one of which is slidably disposed in the mounting hole (311); after the anti-falling jack (200) pulls the hydraulic support body (100), the sliding plate (320) slides and abuts against the working surface.
2. The anti-falling device of the horizontal pull type hydraulic support according to claim 1 is characterized in that: Also includes: The telescopic members (400) are provided in a plurality, one telescopic member (400) being arranged in a mounting hole (311), the sliding plate (320) being arranged on the telescopic member (400), and the telescopic member (400) driving the sliding plate (320) to slide.
3. The anti-falling device of the horizontal pull type hydraulic support according to claim 2 is characterized in that: The sliding plate (320) has a sliding groove (321) on the top, and further comprises: A sliding column (500) is slidably disposed in the sliding groove (321); the sliding plate (320) is disposed on the telescopic member (400) via the sliding column (500); A baffle (600) is arranged on the top of the sliding plate (320), the baffle (600) is located at the opening of the sliding groove (321), and the sliding plate (320) abuts against the baffle (600) after sliding; The pressure sensor (700) is arranged at the bottom of the sliding groove (321), and the sliding column (500) presses the pressure sensor (700) after sliding.
4. The anti-falling device of the horizontal pull type hydraulic support according to claim 2 is characterized in that: Also includes: An elastic member (800) has two ends respectively arranged on the telescopic member (400) and the sliding plate (320), and the elastic member (800) provides a force for the sliding plate (320) to move away from the telescopic member (400).
5. The anti-falling device of the horizontal pull type hydraulic support according to claim 1 is characterized in that: Also includes: The sleeve (900) is arranged on the top beam of the hydraulic support body (100), and the two ends of the anti-falling jack (200) are respectively arranged on the sleeves (900) on two adjacent hydraulic support bodies (100).
6. The anti-falling device of the horizontal pull type hydraulic support according to claim 5 is characterized in that: Also includes: The connecting head (1000) is slidably arranged on the sleeve (900), and the anti-falling jack (200) is hinged to the connecting head (1000).
7. The anti-falling device of the horizontal pull type hydraulic support according to claim 5 is characterized in that: Also includes: A retaining ring (1100) is detachably arranged on the sleeve (900), and the retaining ring (1100) is used to prevent the anti-falling jack (200) from falling off the sleeve (900).