WO2009089769A1

WO2009089769A1 - A light-duty hydraulic bracket

Info

Publication number: WO2009089769A1
Application number: PCT/CN2009/000033
Authority: WO
Inventors: Zeyu Li
Original assignee: Zeyu Li
Priority date: 2008-01-10
Filing date: 2009-01-09
Publication date: 2009-07-23
Also published as: CN101482025A; CN101482025B

Abstract

A light-duty hydraulic bracket for working surfaces in coal mine includes a monolithic top beam (1), a hydraulic support (8), a front extending beam (5) and a front extending beam cylinder (7), a baffle device (9), a sliding element (13, 23) which is slidable on a guide (22, 24) arranged on one side of the top beam (1), a moving cylinder (12) hinged to the sliding element (13, 23). Wherein at least one engagement mechanism is provided between two adjacent top beams (1). The engagement mechanism consists of a moving element (26) which is movable left and right, a sliding element (13, 23) which is slidable along the guide (22, 24) forward and backward, and a connecting element (16) which at one end thereof connects to the moving element (26) and at the other end thereof connects to the sliding element (13, 23). The engagement mechanism provides greater clearance of bracket adjustment by means of the movement of the moving element (26), so that it is easy to adjust the distance between brackets, especially suitable to support uneven top plates.

Description

Lightweight hydraulic support technology

The invention relates to a light hydraulic support for supporting a roof of a coal mining face under coal mine. Background technique

The hydraulic support is divided into two categories: a fully mechanized support and a slide support. The present invention is a hydraulic support for use between the two. In order to overcome the shortcomings of the above two types of brackets, the applicant has designed a chain suspension hydraulic support (Chinese Patent Application No. ZL200 ⁵² 001915 ² . ² ), and the top beam side hinged shifting frame rainbow, the moving frame cylinder pushes the sliding The piece slides on the side of the top beam, and the slider is connected to the flexible member connected to the adjacent frame. When the rack is unloaded, the pillar beam is lowered to be completely pulled by the flexible member, and the extension or contraction cylinder drives the sliding member to slide, so that the top beam is moved forward, and then the column is supported. When the top plate is not flat, it is necessary to select the flexible member for a long time. At this time, the bracket is easy to move and adjust, which means that the mechanism has strong adaptability to the uneven top plate, but when the top plate is relatively flat, the flexible member is often expected to be short. At this time, if the two gaps are increased to the upper limit allowed by the flexible member, the flexible member is close to the horizontal level, so the difficulty of the adjustment is increased, and the time for the adjustment is also increased. If a long flexible member is also used under the flat top plate, the distance required for the top beam to fall until it is completely pulled by the flexible member is large, that is, the distance that the leg needs to be increased is large, which affects the whole The speed of the work surface. Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to provide a hydraulic support capable of increasing the adaptability of a flexible member to a frame pitch under the premise of ensuring a small amount of legs to be lifted, saving labor and quickly moving the frame and adjusting the spacing of the frames. For To solve the above problems, a light hydraulic support of the present invention comprises a top beam, a hydraulic support, a front extension beam and a front extension beam cylinder, a damper device or a top coal discharging device, and a sliding member sliding on a rail on one side of the top beam, a shifting cylinder hinged to the sliding member, characterized in that at least one movable member movable between the two adjacent top beams is provided, and the sliding member and the one end sliding along the guiding rail are connected with the moving member, and A truss mechanism consisting of a connector that is connected to the slider at one end.

A lightweight hydraulic support as described above, the connector being an elongate flexible member made of a chain and/or a wire rope, and/or a plurality of short links connected end to end.

A lightweight hydraulic support as described above, the connecting member being a rigid connecting rod connected to the moving member at one end and connected to the sliding member at the other end.

As described above, in a lightweight hydraulic support, the moving member is a pendulum mechanism in which one end is hinged to the top beam, and the other end is swingable to the left and right and connected to the connecting member.

A lightweight hydraulic support as described above, the moving member being a slider that can slide left and right along the guide rails on the top beam.

A light hydraulic support device as described above, one side of the sliding member is hinged with the other end and the shifting cylinder hinged by the top beam, and the other side of the sliding member is connected with the force transmitting member connected to the top beam of the adjacent frame. .

As with the light hydraulic support described above, the moving member can be used alone or in combination with a lateral adjustment cylinder.

As described above, a lightweight hydraulic support is provided only at one end of the top beam, and the other end is connected to the adjacent top beam by a joist that traverses the plurality of top beams.

A lightweight hydraulic support as described above, the link mechanism is only provided at one end of the top beam, and the other end is connected to the adjacent top beam by a flexible four-bar slider mechanism.

A light hydraulic support as described above, the frame mechanism is only provided at one end of the top beam, The other end is connected to the adjacent top beam by a vertical rail slider mechanism.

By adopting such a structure, the adaptability of the connecting member to the change of the spacing of the frame can be increased under the premise of ensuring the small amount of the legs, and the moving member can be moved by controlling the expansion and contraction of the horizontal adjusting cylinder, thereby being flexible and freely Adjust the bracket orientation and adjust the bracket spacing directly. Since the horizontally-adjusting cylinder is tightly attached to the underside of the top beam, and the shifting cylinder is installed in the joint between the two top beams, it is not easy to collapse when the gun is fired, so it can be used for gun mining. In the light hydraulic support of the present invention, each of the top beams is connected by a flexible member such as a chain movable in all directions, so that not only the labor is saved, but also the range of the upper and lower movements of any one of the top beams is relatively large. Therefore, it is most suitable for the support of uneven roof.

At the same time, since the brackets of the entire working surface are integrally connected by a connecting member such as a chain, the folding can be effectively prevented. Since the top beam can be made wider, the top net can be not tied when the top coal is placed, which reduces the cost per ton of coal. Moreover, since all the pillars of the bracket can be moved forward in synchronization, the integral bottom beam and the shifting cylinder can be installed, so that the frame can be moved quickly. DRAWINGS

The invention will now be described in further detail with reference to the drawings and specific embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view of a first embodiment of a lightweight hydraulic support of the present invention.

Fig. 2 is a plan view showing a first embodiment of a lightweight hydraulic support according to the present invention in use.

Fig. 3 is an enlarged view showing the connection of the chain and the moving member and the chain to the slider in the first embodiment of the lightweight hydraulic support of the present invention.

4 is an enlarged view showing a second embodiment of a lightweight hydraulic support according to the present invention in which the movable member of the frame can be moved to the left and right and the adjacent frame slide. Fig. 5 is a plan view showing a third embodiment of a lightweight hydraulic support according to the present invention in which a double propulsion cylinder bracket is used in combination with a propulsion cylinder bracket.

Figure 6 is a front elevational view of a fourth embodiment of a lightweight hydraulic support of the present invention.

Figure 7 is a cross-sectional view showing a flexible four-bar slider mechanism in a fifth embodiment of a lightweight hydraulic support according to the present invention.

Figure 8 is a cross-sectional view showing a vertical rail slider mechanism in a sixth embodiment of a lightweight hydraulic support according to the present invention. detailed description

1 , 2 and 3, a first embodiment of a lightweight hydraulic support of the present invention includes an integral top beam 1; a slide 13 slidable along the lower rail 22 and the upper rail 24 on the top beam 1 and a sliding member 23; the end is hinged to the moving member 26 by the pin 17, and the other end is respectively connected to the two chains 16 hinged to the sliding member 13 and the sliding member 23 on the top beam 1 of the adjacent frame by the pin 15; through the pin 30 and the top beam 1 articulated moving member 26; - a pivoting cylinder 29 hinged to the moving member 26 by a pin 27, and a steering cylinder 29 hinged to the top beam 1 by a pin 31; a hydraulic strut 8 vertically downward from the top beam 1; 11 is hinged to the rear end of the top beam 1 of the bracket, one end of the cylinder is hinged to the sliding member 23 by a pin 18, and the other end of the cylinder is connected to the sliding cylinder 13 by the propulsion cylinder 12; the end is hinged to the sliding member 23 by the pin 19, The other end is a force transmitting member 20 hinged to the front end of the top beam 1 of the adjacent bracket by the pin 21; the tail beam 9 hinged to the rear end of the top beam 1 by the pin 10, the tail beam 9 has the function of blocking or topping the coal, and the damper is blocked. The tail beam 9 can be used for the device or the top coal discharging device; the rear end of the top beam 1 is hinged by the pin 14 The front extension beam cylinder 7 and the front extension beam 5 hinged together by the pin 6.

As shown in Fig. 2, a light hydraulic support is in a state of being moved. At this time, the first support and the second support have been moved by one step, and the third support is being moved forward. First under the top beam 1 of the third frame The pillar 8 is lifted, and the top beam 1 is lowered. At this time, the left side of the top beam 1 is suspended by the two chains 16 hinged with the sliding member 13 and the sliding member 23 on the top beam 1 of the second frame adjacent thereto. The right side is suspended by two other chains 16 hinged on the moving member 26 on the top beam 1 of the fourth frame adjacent to the right side. At this time, if the third bracket is to be turned or the rack spacing is adjusted, the piston rods of the front and rear aligning cylinders 29 may be extended as needed to push the moving member 26 to rotate around the pin 30, when approaching the maximum extension of the aligning cylinder 29. In the range, the positioning structure 32 on the moving member 26 will hit the top beam 1 to protect the steering cylinder 29. At this time, the piston rod of the propulsion cylinder 12 on the left side of the third bracket is contracted, and the top beam 1 of the third bracket is pulled forward by the force transmitting member 20 hinged at the front end of the bracket 2; on the right side of the third bracket top beam 1 The piston rod of the propulsion cylinder 12 hinged to the rear end of the fourth top beam 1 is extended to push the slider 23, and the slider 23 pushes the third frame through the force transmitting member 20 hinged to the top beam 1 of the third bracket. The top beam 1 of the bracket, so that the bracket 3 can move forward one step.

Referring to Fig. 3, when the frame spacing is increased, the chain 16 will be pulled into a nearly horizontal straight line, which makes it difficult to attach the top frame and the top beam 1. At this time, the piston rod of the adjustment cylinder 29 is extended, and the chain 16 is relaxed. Down, return to normal use. Therefore, it is possible to lift the column less when moving the frame to speed up the movement.

Referring to Fig. 4, in the second embodiment, the left and right movement of the moving member is realized by sliding the movable member 4 to the left and right on the guide rail 3, and the link 2 replaces the chain 16 in the first embodiment. Of course, it is also possible to use the chain 16 here.

In combination with FIG. 5, the third embodiment differs from the first embodiment in that it does not have a propulsion red 12 on each of the top beams, but two of the first, third, and fifth frames. Pushing the red, the 2nd, 4th, 6th... There is no propulsion cylinder. When moving the frame, there is no propulsion cylinder first, and there are 2 propulsion rainbows. Of course, the common method of shifting in the well is to move the 2nd and 4th frames first, then move the 1st and 3rd, then move the 6th and 8th, then move the 5th and 7th, and so on.

Referring to FIG. 6, in the fourth embodiment, the rear end of the top beam 1 uses the connecting mechanism of the present invention, and the front end is used. The joist 33 is used as a splicing mechanism, and both ends of the propulsion cylinder 35 are connected to the joist 33 and the top sill 1 by pins 34 and 36, respectively. The advantage is that when the top plate is not flat, the back end of the top beam can be supported to support the top plate and reach the rated initial support force.

Referring to FIG. 7, in the fifth embodiment, the rear end of the top beam 1 uses the connecting mechanism of the present invention, and the flexible four-bar linkage mechanism used for the front end suspension bracket (Chinese Patent Application No. 88104291.9) is used as two top beams. The inter-frame mechanism, including the upper link 37, the rocking hinge base 38, and the front slider 39, has the advantage of using the stud mechanism to ensure that the top end of the top beam supports the top plate and reaches the rated initial support force when the top plate is not flat.

Referring to FIG. 8, in the sixth embodiment, the rear end of the top beam 1 uses the connecting mechanism of the present invention, and the front end vertical rail slider mechanism is used as the connecting mechanism, including the horizontal rail 3, the moving member 4, the pin 40, and the small joint. Rod 2, vertical rail 41 and vertical slider 42. The sixth embodiment is similar to the fifth embodiment.

In addition, the steering cylinder 29 is changed to a position to change the shape or structure of the moving member 26, or to be a combination of the members; to increase or decrease or to change some of the devices commonly used on the bracket, for example, to convert the front extension beam 5 into a flip front. Stretching beams and the like; of course, the propulsion cylinder 12 can be directly connected to the force transmitting member 20; the moving member 26 can also be made on the sliding member 13 and/or 23; or the moving member 26 can be changed on the top beam 1. These simple transformations, such as position or number, etc., also fall within the protection of the present invention.

Claims

Rights request

1. A light hydraulic support for coal mining face under coal mine, including integral top beam, hydraulic support, front extension beam and front extension beam cylinder, damper device or top coal caving device, guide rail on one side of the top beam The upper sliding sliding member and the sliding cylinder hinged with the sliding member are characterized in that at least one movable member movable between the two adjacent top beams is provided, and the sliding member and the one end can be slid back and forth along the guiding rail. A connecting mechanism consisting of a connecting member of the movable member and a connecting member connected to the sliding member at the other end.

2. A lightweight hydraulic support according to claim 1 wherein the attachment member is an elongate flexible member made of a chain and/or a wire rope, and/or a plurality of short links connected end to end.

3. A lightweight hydraulic support according to claim 1 wherein the connector is a rigid link that is coupled to the moving member at one end and to the slider at the other end.

4. A lightweight hydraulic support according to claim 1, wherein the moving member is a pendulum mechanism in which one end is hinged to the top beam and the other end is swingable to the left and right and connected to the connecting member.

5. A lightweight hydraulic support according to claim 1 wherein the moving member is a slider slidable left and right along the guide rails on the top beam.

6. A lightweight hydraulic support according to claim 1 wherein one side of the slider is hinged to the push cylinder and the other side of the slide is coupled to a force transmitting member attached to the top beam of the adjacent frame.

7. A lightweight hydraulic support according to claim 1 wherein the moving member is coupled to the transverse aligning cylinder.

8. A lightweight hydraulic support according to claim 1, wherein the truss mechanism is disposed only at one end of the top beam, and the other end is connected to the adjacent top by a joist below the plurality of girders. Beam.

9. A lightweight hydraulic support according to claim 1 wherein the gantry mechanism is located only on the top beam One end, the other end is connected to the adjacent top beam by a flexible four-bar slider mechanism.

10. A lightweight hydraulic support according to claim 1, wherein the gantry mechanism is disposed only at one end of the top beam and the other end is connected to the adjacent top beam by a vertical rail slider mechanism.